X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fgame.c;h=abd3bd4b41f325ebd2fd01261560e833a551ca21;hb=8f33ee4940b9c35bf4627b7ef1126d03748da646;hp=5f3f9689f3cdbd505d7c56a5e3533afdb358337e;hpb=29fc833ae1b5e46a429a9fa82098e8ad94f6f400;p=rocksndiamonds.git

diff --git a/src/game.c b/src/game.c
index 5f3f9689..05e65026 100644
--- a/src/game.c
+++ b/src/game.c
@@ -14,9 +14,9 @@
 #include "libgame/libgame.h"
 
 #include "game.h"
+#include "init.h"
 #include "tools.h"
 #include "screens.h"
-#include "init.h"
 #include "files.h"
 #include "tape.h"
 #include "network.h"
@@ -32,12 +32,12 @@
 #define DF_DIG			1
 #define DF_SNAP			2
 
-/* for MoveFigure() */
+/* for MovePlayer() */
 #define MF_NO_ACTION		0
 #define MF_MOVING		1
 #define MF_ACTION		2
 
-/* for ScrollFigure() */
+/* for ScrollPlayer() */
 #define SCROLL_INIT		0
 #define SCROLL_GO_ON		1
 
@@ -89,8 +89,71 @@
 #define DOUBLE_PLAYER_SPEED(p)	(HALVE_MOVE_DELAY((p)->move_delay_value))
 #define HALVE_PLAYER_SPEED(p)	(DOUBLE_MOVE_DELAY((p)->move_delay_value))
 
+/* values for other actions */
+#define MOVE_STEPSIZE_NORMAL	(TILEX / MOVE_DELAY_NORMAL_SPEED)
+
 #define	INIT_GFX_RANDOM()	(SimpleRND(1000000))
 
+#define GET_NEW_PUSH_DELAY(e)	(   (element_info[e].push_delay_fixed) + \
+				 RND(element_info[e].push_delay_random))
+#define GET_NEW_MOVE_DELAY(e)	(   (element_info[e].move_delay_fixed) + \
+				 RND(element_info[e].move_delay_random))
+#define GET_MAX_MOVE_DELAY(e)	(   (element_info[e].move_delay_fixed) + \
+				    (element_info[e].move_delay_random))
+
+#define ELEMENT_CAN_ENTER_FIELD_GENERIC(e, x, y, condition)		\
+		(IN_LEV_FIELD(x, y) && (IS_FREE(x, y) ||		\
+					(condition) ||			\
+					(DONT_COLLIDE_WITH(e) &&	\
+					 IS_FREE_OR_PLAYER(x, y))))
+
+#define ELEMENT_CAN_ENTER_FIELD_GENERIC_2(x, y, condition)		\
+		(IN_LEV_FIELD(x, y) && (IS_FREE(x, y) ||		\
+					(condition)))
+
+#define ELEMENT_CAN_ENTER_FIELD(e, x, y)				\
+	ELEMENT_CAN_ENTER_FIELD_GENERIC(e, x, y, 0)
+
+#define ELEMENT_CAN_ENTER_FIELD_OR_ACID(e, x, y)			\
+	ELEMENT_CAN_ENTER_FIELD_GENERIC(e, x, y, (Feld[x][y] == EL_ACID))
+
+#define ELEMENT_CAN_ENTER_FIELD_OR_ACID_2(x, y)				\
+	ELEMENT_CAN_ENTER_FIELD_GENERIC_2(x, y, (Feld[x][y] == EL_ACID))
+
+#define ENEMY_CAN_ENTER_FIELD(x, y) (IN_LEV_FIELD(x, y) && IS_FREE(x, y))
+
+#define YAMYAM_CAN_ENTER_FIELD(x, y)					\
+		(IN_LEV_FIELD(x, y) && (IS_FREE_OR_PLAYER(x, y) ||	\
+					Feld[x][y] == EL_DIAMOND))
+
+#define DARK_YAMYAM_CAN_ENTER_FIELD(x, y)				\
+		(IN_LEV_FIELD(x, y) && (IS_FREE_OR_PLAYER(x, y) ||	\
+					IS_FOOD_DARK_YAMYAM(Feld[x][y])))
+
+#define PACMAN_CAN_ENTER_FIELD(x, y)					\
+		(IN_LEV_FIELD(x, y) && (IS_FREE_OR_PLAYER(x, y) ||	\
+					IS_AMOEBOID(Feld[x][y])))
+
+#define PIG_CAN_ENTER_FIELD(x, y)					\
+		(IN_LEV_FIELD(x, y) && (IS_FREE(x, y) ||		\
+					IS_FOOD_PIG(Feld[x][y])))
+
+#define PENGUIN_CAN_ENTER_FIELD(x, y)					\
+		(IN_LEV_FIELD(x, y) && (IS_FREE(x, y) ||		\
+					IS_FOOD_PENGUIN(Feld[x][y]) ||	\
+					Feld[x][y] == EL_EXIT_OPEN ||	\
+					Feld[x][y] == EL_ACID))
+
+#define MAZE_RUNNER_CAN_ENTER_FIELD(x, y)				\
+		(IN_LEV_FIELD(x, y) && (IS_FREE(x, y) ||		\
+					IS_FOOD_DARK_YAMYAM(Feld[x][y])))
+
+#define MOLE_CAN_ENTER_FIELD(x, y, condition)				\
+		(IN_LEV_FIELD(x, y) && (IS_FREE(x, y) || (condition)))
+
+#define IN_LEV_FIELD_AND_IS_FREE(x, y)  (IN_LEV_FIELD(x, y) &&  IS_FREE(x, y))
+#define IN_LEV_FIELD_AND_NOT_FREE(x, y) (IN_LEV_FIELD(x, y) && !IS_FREE(x, y))
+
 /* game button identifiers */
 #define GAME_CTRL_ID_STOP		0
 #define GAME_CTRL_ID_PAUSE		1
@@ -101,20 +164,36 @@
 
 #define NUM_GAME_BUTTONS		6
 
+
 /* forward declaration for internal use */
-#if 0
-static void ResetGfxAnimation(int, int);
-#endif
+
+static boolean MovePlayerOneStep(struct PlayerInfo *, int, int, int, int);
+static boolean MovePlayer(struct PlayerInfo *, int, int);
+static void ScrollPlayer(struct PlayerInfo *, int);
+static void ScrollScreen(struct PlayerInfo *, int);
 
 static void InitBeltMovement(void);
 static void CloseAllOpenTimegates(void);
 static void CheckGravityMovement(struct PlayerInfo *);
 static void KillHeroUnlessProtected(int, int);
 
-static void PlaySoundLevel(int, int, int);
-static void PlaySoundLevelNearest(int, int, int);
-static void PlaySoundLevelAction(int, int, int);
-static void PlaySoundLevelElementAction(int, int, int, int);
+static void TestIfPlayerTouchesCustomElement(int, int);
+static void TestIfElementTouchesCustomElement(int, int);
+
+static void ChangeElement(int, int, int);
+static boolean CheckTriggeredElementSideChange(int, int, int, int, int);
+static boolean CheckTriggeredElementChange(int, int, int, int);
+static boolean CheckElementSideChange(int, int, int, int, int, int);
+static boolean CheckElementChange(int, int, int, int);
+
+static void PlayLevelSound(int, int, int);
+static void PlayLevelSoundNearest(int, int, int);
+static void PlayLevelSoundAction(int, int, int);
+static void PlayLevelSoundElementAction(int, int, int, int);
+static void PlayLevelSoundElementActionIfLoop(int, int, int, int);
+static void PlayLevelSoundActionIfLoop(int, int, int);
+static void StopLevelSoundActionIfLoop(int, int, int);
+static void PlayLevelMusic();
 
 static void MapGameButtons();
 static void HandleGameButtons(struct GadgetInfo *);
@@ -144,59 +223,252 @@ static void RunTimegateWheel(int x, int y);
 
 struct ChangingElementInfo
 {
-  int base_element;
-  int next_element;
+  int element;
+  int target_element;
   int change_delay;
   void (*pre_change_function)(int x, int y);
   void (*change_function)(int x, int y);
   void (*post_change_function)(int x, int y);
 };
 
-static struct ChangingElementInfo changing_element_list[] =
+static struct ChangingElementInfo change_delay_list[] =
 {
-  { EL_NUT_CRACKING,		EL_EMERALD,		 6, NULL, NULL, NULL },
-  { EL_PEARL_BREAKING,		EL_EMPTY,		 8, NULL, NULL, NULL },
-  { EL_EXIT_OPENING,		EL_EXIT_OPEN,		29, NULL, NULL, NULL },
-
-  { EL_SWITCHGATE_OPENING,	EL_SWITCHGATE_OPEN,	29, NULL, NULL, NULL },
-  { EL_SWITCHGATE_CLOSING,	EL_SWITCHGATE_CLOSED,	29, NULL, NULL, NULL },
+  {
+    EL_NUT_BREAKING,
+    EL_EMERALD,
+    6,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_PEARL_BREAKING,
+    EL_EMPTY,
+    8,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_EXIT_OPENING,
+    EL_EXIT_OPEN,
+    29,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_EXIT_CLOSING,
+    EL_EXIT_CLOSED,
+    29,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_SP_EXIT_OPENING,
+    EL_SP_EXIT_OPEN,
+    29,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_SP_EXIT_CLOSING,
+    EL_SP_EXIT_CLOSED,
+    29,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_SWITCHGATE_OPENING,
+    EL_SWITCHGATE_OPEN,
+    29,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_SWITCHGATE_CLOSING,
+    EL_SWITCHGATE_CLOSED,
+    29,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_TIMEGATE_OPENING,
+    EL_TIMEGATE_OPEN,
+    29,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_TIMEGATE_CLOSING,
+    EL_TIMEGATE_CLOSED,
+    29,
+    NULL,
+    NULL,
+    NULL
+  },
 
-  { EL_TIMEGATE_OPENING,	EL_TIMEGATE_OPEN,	29, NULL, NULL, NULL },
-  { EL_TIMEGATE_CLOSING,	EL_TIMEGATE_CLOSED,	29, NULL, NULL, NULL },
+  {
+    EL_ACID_SPLASH_LEFT,
+    EL_EMPTY,
+    8,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_ACID_SPLASH_RIGHT,
+    EL_EMPTY,
+    8,
+    NULL,
+    NULL,
+    NULL
+  },
+  {
+    EL_SP_BUGGY_BASE,
+    EL_SP_BUGGY_BASE_ACTIVATING,
+    0,
+    InitBuggyBase,
+    NULL,
+    NULL
+  },
+  {
+    EL_SP_BUGGY_BASE_ACTIVATING,
+    EL_SP_BUGGY_BASE_ACTIVE,
+    0,
+    InitBuggyBase,
+    NULL,
+    NULL
+  },
+  {
+    EL_SP_BUGGY_BASE_ACTIVE,
+    EL_SP_BUGGY_BASE,
+    0,
+    InitBuggyBase,
+    WarnBuggyBase,
+    NULL
+  },
+  {
+    EL_TRAP,
+    EL_TRAP_ACTIVE,
+    0,
+    InitTrap,
+    NULL,
+    ActivateTrap
+  },
+  {
+    EL_TRAP_ACTIVE,
+    EL_TRAP,
+    31,
+    NULL,
+    ChangeActiveTrap,
+    NULL
+  },
+  {
+    EL_ROBOT_WHEEL_ACTIVE,
+    EL_ROBOT_WHEEL,
+    0,
+    InitRobotWheel,
+    RunRobotWheel,
+    StopRobotWheel
+  },
+  {
+    EL_TIMEGATE_SWITCH_ACTIVE,
+    EL_TIMEGATE_SWITCH,
+    0,
+    InitTimegateWheel,
+    RunTimegateWheel,
+    NULL
+  },
 
-  { EL_ACID_SPLASH_LEFT,	EL_EMPTY,		 8, NULL, NULL, NULL },
-  { EL_ACID_SPLASH_RIGHT,	EL_EMPTY,		 8, NULL, NULL, NULL },
+  {
+    EL_UNDEFINED,
+    EL_UNDEFINED,
+    -1,
+    NULL,
+    NULL,
+    NULL
+  }
+};
 
-  { EL_SP_BUGGY_BASE,		EL_SP_BUGGY_BASE_ACTIVATING, 0,
-    InitBuggyBase, NULL, NULL },
-  { EL_SP_BUGGY_BASE_ACTIVATING,EL_SP_BUGGY_BASE_ACTIVE, 0,
-    InitBuggyBase, NULL, NULL },
-  { EL_SP_BUGGY_BASE_ACTIVE,	EL_SP_BUGGY_BASE,	 0,
-    InitBuggyBase, WarnBuggyBase, NULL },
+struct
+{
+  int element;
+  int push_delay_fixed, push_delay_random;
+}
+push_delay_list[] =
+{
+  { EL_SPRING,			0, 0 },
+  { EL_BALLOON,			0, 0 },
 
-  { EL_TRAP,			EL_TRAP_ACTIVE,		 0,
-    InitTrap, NULL, ActivateTrap },
-  { EL_TRAP_ACTIVE,		EL_TRAP,		31,
-    NULL, ChangeActiveTrap, NULL },
+  { EL_SOKOBAN_OBJECT,		2, 0 },
+  { EL_SOKOBAN_FIELD_FULL,	2, 0 },
+  { EL_SATELLITE,		2, 0 },
+  { EL_SP_DISK_YELLOW,		2, 0 },
 
-  { EL_ROBOT_WHEEL_ACTIVE,	EL_ROBOT_WHEEL,		 0,
-    InitRobotWheel, RunRobotWheel, StopRobotWheel },
+  { EL_UNDEFINED,		0, 0 },
+};
 
-  { EL_TIMEGATE_SWITCH_ACTIVE,	EL_TIMEGATE_SWITCH,	 0,
-    InitTimegateWheel, RunTimegateWheel, NULL },
+struct
+{
+  int element;
+  int move_stepsize;
+}
+move_stepsize_list[] =
+{
+  { EL_AMOEBA_DROP,		2 },
+  { EL_AMOEBA_DROPPING,		2 },
+  { EL_QUICKSAND_FILLING,	1 },
+  { EL_QUICKSAND_EMPTYING,	1 },
+  { EL_MAGIC_WALL_FILLING,	2 },
+  { EL_BD_MAGIC_WALL_FILLING,	2 },
+  { EL_MAGIC_WALL_EMPTYING,	2 },
+  { EL_BD_MAGIC_WALL_EMPTYING,	2 },
+
+  { EL_UNDEFINED,		0 },
+};
 
-  { EL_UNDEFINED,		EL_UNDEFINED,	        -1, NULL	}
+struct
+{
+  int element;
+  int count;
+}
+collect_count_list[] =
+{
+  { EL_EMERALD,			1 },
+  { EL_BD_DIAMOND,		1 },
+  { EL_EMERALD_YELLOW,		1 },
+  { EL_EMERALD_RED,		1 },
+  { EL_EMERALD_PURPLE,		1 },
+  { EL_DIAMOND,			3 },
+  { EL_SP_INFOTRON,		1 },
+  { EL_PEARL,			5 },
+  { EL_CRYSTAL,			8 },
+
+  { EL_UNDEFINED,		0 },
 };
 
-static struct ChangingElementInfo changing_element[MAX_NUM_ELEMENTS];
+static unsigned long trigger_events[MAX_NUM_ELEMENTS];
+
+#define IS_AUTO_CHANGING(e)	(element_info[e].change_events & \
+				 CH_EVENT_BIT(CE_DELAY))
+#define IS_JUST_CHANGING(x, y)	(ChangeDelay[x][y] != 0)
+#define IS_CHANGING(x, y)	(IS_AUTO_CHANGING(Feld[x][y]) || \
+				 IS_JUST_CHANGING(x, y))
 
-#define IS_AUTO_CHANGING(e)  (changing_element[e].base_element != EL_UNDEFINED)
+#define CE_PAGE(e, ce)		(element_info[e].event_page[ce])
 
 
 void GetPlayerConfig()
 {
   if (!audio.sound_available)
-    setup.sound = FALSE;
+    setup.sound_simple = FALSE;
 
   if (!audio.loops_available)
     setup.sound_loops = FALSE;
@@ -207,7 +479,7 @@ void GetPlayerConfig()
   if (!video.fullscreen_available)
     setup.fullscreen = FALSE;
 
-  setup.sound_simple = setup.sound;
+  setup.sound = (setup.sound_simple || setup.sound_loops || setup.sound_music);
 
   SetAudioMode(setup.sound);
   InitJoysticks();
@@ -215,33 +487,33 @@ void GetPlayerConfig()
 
 static int getBeltNrFromBeltElement(int element)
 {
-  return (element < EL_CONVEYOR_BELT2_LEFT ? 0 :
-	  element < EL_CONVEYOR_BELT3_LEFT ? 1 :
-	  element < EL_CONVEYOR_BELT4_LEFT ? 2 : 3);
+  return (element < EL_CONVEYOR_BELT_2_LEFT ? 0 :
+	  element < EL_CONVEYOR_BELT_3_LEFT ? 1 :
+	  element < EL_CONVEYOR_BELT_4_LEFT ? 2 : 3);
 }
 
 static int getBeltNrFromBeltActiveElement(int element)
 {
-  return (element < EL_CONVEYOR_BELT2_LEFT_ACTIVE ? 0 :
-	  element < EL_CONVEYOR_BELT3_LEFT_ACTIVE ? 1 :
-	  element < EL_CONVEYOR_BELT4_LEFT_ACTIVE ? 2 : 3);
+  return (element < EL_CONVEYOR_BELT_2_LEFT_ACTIVE ? 0 :
+	  element < EL_CONVEYOR_BELT_3_LEFT_ACTIVE ? 1 :
+	  element < EL_CONVEYOR_BELT_4_LEFT_ACTIVE ? 2 : 3);
 }
 
 static int getBeltNrFromBeltSwitchElement(int element)
 {
-  return (element < EL_CONVEYOR_BELT2_SWITCH_LEFT ? 0 :
-	  element < EL_CONVEYOR_BELT3_SWITCH_LEFT ? 1 :
-	  element < EL_CONVEYOR_BELT4_SWITCH_LEFT ? 2 : 3);
+  return (element < EL_CONVEYOR_BELT_2_SWITCH_LEFT ? 0 :
+	  element < EL_CONVEYOR_BELT_3_SWITCH_LEFT ? 1 :
+	  element < EL_CONVEYOR_BELT_4_SWITCH_LEFT ? 2 : 3);
 }
 
 static int getBeltDirNrFromBeltSwitchElement(int element)
 {
   static int belt_base_element[4] =
   {
-    EL_CONVEYOR_BELT1_SWITCH_LEFT,
-    EL_CONVEYOR_BELT2_SWITCH_LEFT,
-    EL_CONVEYOR_BELT3_SWITCH_LEFT,
-    EL_CONVEYOR_BELT4_SWITCH_LEFT
+    EL_CONVEYOR_BELT_1_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_2_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_3_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_4_SWITCH_LEFT
   };
 
   int belt_nr = getBeltNrFromBeltSwitchElement(element);
@@ -264,69 +536,84 @@ static int getBeltDirFromBeltSwitchElement(int element)
   return belt_move_dir[belt_dir_nr];
 }
 
-static void InitField(int x, int y, boolean init_game)
+static void InitPlayerField(int x, int y, int element, boolean init_game)
 {
-  switch (Feld[x][y])
+  if (element == EL_SP_MURPHY)
   {
-    case EL_SP_MURPHY:
-      if (init_game)
+    if (init_game)
+    {
+      if (stored_player[0].present)
       {
-	if (stored_player[0].present)
-	{
-	  Feld[x][y] = EL_SP_MURPHY_CLONE;
-	  break;
-	}
+	Feld[x][y] = EL_SP_MURPHY_CLONE;
 
-	Feld[x][y] = EL_PLAYER1;
+	return;
       }
-      /* no break! */
-    case EL_PLAYER1:
-    case EL_PLAYER2:
-    case EL_PLAYER3:
-    case EL_PLAYER4:
-      if (init_game)
+      else
       {
-	struct PlayerInfo *player = &stored_player[Feld[x][y] - EL_PLAYER1];
-	int jx = player->jx, jy = player->jy;
+	stored_player[0].use_murphy_graphic = TRUE;
+      }
+
+      Feld[x][y] = EL_PLAYER_1;
+    }
+  }
 
-	player->present = TRUE;
+  if (init_game)
+  {
+    struct PlayerInfo *player = &stored_player[Feld[x][y] - EL_PLAYER_1];
+    int jx = player->jx, jy = player->jy;
 
-	if (!options.network || player->connected)
-	{
-	  player->active = TRUE;
+    player->present = TRUE;
 
-	  /* remove potentially duplicate players */
-	  if (StorePlayer[jx][jy] == Feld[x][y])
-	    StorePlayer[jx][jy] = 0;
+    if (!options.network || player->connected)
+    {
+      player->active = TRUE;
 
-	  StorePlayer[x][y] = Feld[x][y];
+      /* remove potentially duplicate players */
+      if (StorePlayer[jx][jy] == Feld[x][y])
+	StorePlayer[jx][jy] = 0;
 
-	  if (options.debug)
-	  {
-	    printf("Player %d activated.\n", player->element_nr);
-	    printf("[Local player is %d and currently %s.]\n",
-		   local_player->element_nr,
-		   local_player->active ? "active" : "not active");
-	  }
-	}
+      StorePlayer[x][y] = Feld[x][y];
 
-	Feld[x][y] = EL_EMPTY;
-	player->jx = player->last_jx = x;
-	player->jy = player->last_jy = y;
+      if (options.debug)
+      {
+	printf("Player %d activated.\n", player->element_nr);
+	printf("[Local player is %d and currently %s.]\n",
+	       local_player->element_nr,
+	       local_player->active ? "active" : "not active");
       }
+    }
+
+    Feld[x][y] = EL_EMPTY;
+    player->jx = player->last_jx = x;
+    player->jy = player->last_jy = y;
+  }
+}
+
+static void InitField(int x, int y, boolean init_game)
+{
+  int element = Feld[x][y];
+
+  switch (element)
+  {
+    case EL_SP_MURPHY:
+    case EL_PLAYER_1:
+    case EL_PLAYER_2:
+    case EL_PLAYER_3:
+    case EL_PLAYER_4:
+      InitPlayerField(x, y, element, init_game);
       break;
 
     case EL_STONEBLOCK:
       if (x < lev_fieldx-1 && Feld[x+1][y] == EL_ACID)
-	Feld[x][y] = EL_ACIDPOOL_TOPLEFT;
+	Feld[x][y] = EL_ACID_POOL_TOPLEFT;
       else if (x > 0 && Feld[x-1][y] == EL_ACID)
-	Feld[x][y] = EL_ACIDPOOL_TOPRIGHT;
-      else if (y > 0 && Feld[x][y-1] == EL_ACIDPOOL_TOPLEFT)
-	Feld[x][y] = EL_ACIDPOOL_BOTTOMLEFT;
+	Feld[x][y] = EL_ACID_POOL_TOPRIGHT;
+      else if (y > 0 && Feld[x][y-1] == EL_ACID_POOL_TOPLEFT)
+	Feld[x][y] = EL_ACID_POOL_BOTTOMLEFT;
       else if (y > 0 && Feld[x][y-1] == EL_ACID)
-	Feld[x][y] = EL_ACIDPOOL_BOTTOM;
-      else if (y > 0 && Feld[x][y-1] == EL_ACIDPOOL_TOPRIGHT)
-	Feld[x][y] = EL_ACIDPOOL_BOTTOMRIGHT;
+	Feld[x][y] = EL_ACID_POOL_BOTTOM;
+      else if (y > 0 && Feld[x][y-1] == EL_ACID_POOL_TOPRIGHT)
+	Feld[x][y] = EL_ACID_POOL_BOTTOMRIGHT;
       break;
 
     case EL_BUG_RIGHT:
@@ -375,7 +662,7 @@ static void InitField(int x, int y, boolean init_game)
     case EL_AMOEBA_DROP:
       if (y == lev_fieldy - 1)
       {
-	Feld[x][y] = EL_AMOEBA_CREATING;
+	Feld[x][y] = EL_AMOEBA_GROWING;
 	Store[x][y] = EL_AMOEBA_WET;
       }
       break;
@@ -398,38 +685,42 @@ static void InitField(int x, int y, boolean init_game)
 
     case EL_PIG:
     case EL_DRAGON:
-      MovDir[x][y] = 1 << RND(4);
+      GfxDir[x][y] = MovDir[x][y] = 1 << RND(4);
       break;
 
+#if 0
     case EL_SP_EMPTY:
       Feld[x][y] = EL_EMPTY;
       break;
+#endif
 
-    case EL_EM_KEY1_FILE:
-      Feld[x][y] = EL_EM_KEY1;
+#if 0
+    case EL_EM_KEY_1_FILE:
+      Feld[x][y] = EL_EM_KEY_1;
       break;
-    case EL_EM_KEY2_FILE:
-      Feld[x][y] = EL_EM_KEY2;
+    case EL_EM_KEY_2_FILE:
+      Feld[x][y] = EL_EM_KEY_2;
       break;
-    case EL_EM_KEY3_FILE:
-      Feld[x][y] = EL_EM_KEY3;
+    case EL_EM_KEY_3_FILE:
+      Feld[x][y] = EL_EM_KEY_3;
       break;
-    case EL_EM_KEY4_FILE:
-      Feld[x][y] = EL_EM_KEY4;
+    case EL_EM_KEY_4_FILE:
+      Feld[x][y] = EL_EM_KEY_4;
       break;
+#endif
 
-    case EL_CONVEYOR_BELT1_SWITCH_LEFT:
-    case EL_CONVEYOR_BELT1_SWITCH_MIDDLE:
-    case EL_CONVEYOR_BELT1_SWITCH_RIGHT:
-    case EL_CONVEYOR_BELT2_SWITCH_LEFT:
-    case EL_CONVEYOR_BELT2_SWITCH_MIDDLE:
-    case EL_CONVEYOR_BELT2_SWITCH_RIGHT:
-    case EL_CONVEYOR_BELT3_SWITCH_LEFT:
-    case EL_CONVEYOR_BELT3_SWITCH_MIDDLE:
-    case EL_CONVEYOR_BELT3_SWITCH_RIGHT:
-    case EL_CONVEYOR_BELT4_SWITCH_LEFT:
-    case EL_CONVEYOR_BELT4_SWITCH_MIDDLE:
-    case EL_CONVEYOR_BELT4_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT_1_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT_1_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT_1_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT_2_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT_2_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT_2_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT_3_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT_3_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT_3_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT_4_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT_4_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT_4_SWITCH_RIGHT:
       if (init_game)
       {
 	int belt_nr = getBeltNrFromBeltSwitchElement(Feld[x][y]);
@@ -459,6 +750,8 @@ static void InitField(int x, int y, boolean init_game)
       break;
 
     default:
+      if (IS_CUSTOM_ELEMENT(element) && CAN_MOVE(element))
+	InitMovDir(x, y);
       break;
   }
 }
@@ -467,20 +760,20 @@ void DrawGameDoorValues()
 {
   int i, j;
 
-  for (i=0; i<MAX_PLAYERS; i++)
-    for (j=0; j<4; j++)
+  for (i = 0; i < MAX_PLAYERS; i++)
+    for (j = 0; j < 4; j++)
       if (stored_player[i].key[j])
 	DrawMiniGraphicExt(drawto, DX_KEYS + j * MINI_TILEX, DY_KEYS,
-			   IMG_KEY1 + j);
+			   el2edimg(EL_KEY_1 + j));
 
   DrawText(DX + XX_EMERALDS, DY + YY_EMERALDS,
-	   int2str(local_player->gems_still_needed, 3), FS_SMALL, FC_YELLOW);
+	   int2str(local_player->gems_still_needed, 3), FONT_TEXT_2);
   DrawText(DX + XX_DYNAMITE, DY + YY_DYNAMITE,
-	   int2str(local_player->dynamite, 3), FS_SMALL, FC_YELLOW);
+	   int2str(local_player->inventory_size, 3), FONT_TEXT_2);
   DrawText(DX + XX_SCORE, DY + YY_SCORE,
-	   int2str(local_player->score, 5), FS_SMALL, FC_YELLOW);
+	   int2str(local_player->score, 5), FONT_TEXT_2);
   DrawText(DX + XX_TIME, DY + YY_TIME,
-	   int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+	   int2str(TimeLeft, 3), FONT_TEXT_2);
 }
 
 
@@ -494,84 +787,200 @@ void DrawGameDoorValues()
 
 static void InitGameEngine()
 {
-  int i;
+  int i, j, k;
 
+  /* set game engine from tape file when re-playing, else from level file */
   game.engine_version = (tape.playing ? tape.engine_version :
 			 level.game_version);
 
+  /* dynamically adjust element properties according to game engine version */
+  InitElementPropertiesEngine(game.engine_version);
+
 #if 0
-    printf("level %d: level version == %06d\n", level_nr, level.game_version);
-    printf("          tape version == %06d [%s] [file: %06d]\n",
-	   tape.engine_version, (tape.playing ? "PLAYING" : "RECORDING"),
-	   tape.file_version);
-    printf("       => game.engine_version == %06d\n", game.engine_version);
+  printf("level %d: level version == %06d\n", level_nr, level.game_version);
+  printf("          tape version == %06d [%s] [file: %06d]\n",
+	 tape.engine_version, (tape.playing ? "PLAYING" : "RECORDING"),
+	 tape.file_version);
+  printf("       => game.engine_version == %06d\n", game.engine_version);
 #endif
 
+  /* ---------- initialize player's initial move delay --------------------- */
+
   /* dynamically adjust player properties according to game engine version */
   game.initial_move_delay =
-    (game.engine_version <= VERSION_IDENT(2,0,1) ? INITIAL_MOVE_DELAY_ON :
+    (game.engine_version <= VERSION_IDENT(2,0,1,0) ? INITIAL_MOVE_DELAY_ON :
      INITIAL_MOVE_DELAY_OFF);
 
   /* dynamically adjust player properties according to level information */
   game.initial_move_delay_value =
     (level.double_speed ? MOVE_DELAY_HIGH_SPEED : MOVE_DELAY_NORMAL_SPEED);
 
-  /* dynamically adjust element properties according to game engine version */
+  /* ---------- initialize player's initial push delay --------------------- */
+
+  /* dynamically adjust player properties according to game engine version */
+  game.initial_push_delay_value =
+    (game.engine_version < VERSION_IDENT(3,0,7,1) ? 5 : -1);
+
+  /* ---------- initialize changing elements ------------------------------- */
+
+  /* initialize changing elements information */
+  for (i = 0; i < MAX_NUM_ELEMENTS; i++)
   {
-    static int ep_em_slippery_wall[] =
+    struct ElementInfo *ei = &element_info[i];
+
+    /* this pointer might have been changed in the level editor */
+    ei->change = &ei->change_page[0];
+
+    if (!IS_CUSTOM_ELEMENT(i))
     {
-      EL_STEELWALL,
-      EL_WALL,
-      EL_WALL_GROWING,
-      EL_WALL_GROWING_X,
-      EL_WALL_GROWING_Y,
-      EL_WALL_GROWING_XY
-    };
-    static int ep_em_slippery_wall_num = SIZEOF_ARRAY_INT(ep_em_slippery_wall);
+      ei->change->target_element = EL_EMPTY_SPACE;
+      ei->change->delay_fixed = 0;
+      ei->change->delay_random = 0;
+      ei->change->delay_frames = 1;
+    }
 
-    for (i=0; i<ep_em_slippery_wall_num; i++)
+    ei->change_events = CE_BITMASK_DEFAULT;
+    for (j = 0; j < NUM_CHANGE_EVENTS; j++)
     {
-      if (level.em_slippery_gems)	/* special EM style gems behaviour */
-	Properties2[ep_em_slippery_wall[i]] |=
-	  EP_BIT_EM_SLIPPERY_WALL;
-      else
-	Properties2[ep_em_slippery_wall[i]] &=
-	  ~EP_BIT_EM_SLIPPERY_WALL;
+      ei->event_page_nr[j] = 0;
+      ei->event_page[j] = &ei->change_page[0];
     }
+  }
 
-    /* "EL_WALL_GROWING_ACTIVE" wasn't slippery for EM gems in version 2.0.1 */
-    if (level.em_slippery_gems && game.engine_version > VERSION_IDENT(2,0,1))
-      Properties2[EL_WALL_GROWING_ACTIVE] |= EP_BIT_EM_SLIPPERY_WALL;
-    else
-      Properties2[EL_WALL_GROWING_ACTIVE] &=~EP_BIT_EM_SLIPPERY_WALL;
+  /* add changing elements from pre-defined list */
+  for (i = 0; change_delay_list[i].element != EL_UNDEFINED; i++)
+  {
+    struct ChangingElementInfo *ch_delay = &change_delay_list[i];
+    struct ElementInfo *ei = &element_info[ch_delay->element];
+
+    ei->change->target_element       = ch_delay->target_element;
+    ei->change->delay_fixed          = ch_delay->change_delay;
+
+    ei->change->pre_change_function  = ch_delay->pre_change_function;
+    ei->change->change_function      = ch_delay->change_function;
+    ei->change->post_change_function = ch_delay->post_change_function;
+
+    ei->change_events |= CH_EVENT_BIT(CE_DELAY);
   }
 
-  /* initialize changing elements information */
-  for (i=0; i<MAX_NUM_ELEMENTS; i++)
+#if 1
+  /* add change events from custom element configuration */
+  for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
+  {
+    struct ElementInfo *ei = &element_info[EL_CUSTOM_START + i];
+
+    for (j = 0; j < ei->num_change_pages; j++)
+    {
+      if (!ei->change_page[j].can_change)
+	continue;
+
+      for (k = 0; k < NUM_CHANGE_EVENTS; k++)
+      {
+	/* only add event page for the first page found with this event */
+	if (ei->change_page[j].events & CH_EVENT_BIT(k) &&
+	    !(ei->change_events & CH_EVENT_BIT(k)))
+	{
+	  ei->change_events |= CH_EVENT_BIT(k);
+	  ei->event_page_nr[k] = j;
+	  ei->event_page[k] = &ei->change_page[j];
+	}
+      }
+    }
+  }
+
+#else
+
+  /* add change events from custom element configuration */
+  for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
+  {
+    int element = EL_CUSTOM_START + i;
+
+    /* only add custom elements that change after fixed/random frame delay */
+    if (CAN_CHANGE(element) && HAS_CHANGE_EVENT(element, CE_DELAY))
+      element_info[element].change_events |= CH_EVENT_BIT(CE_DELAY);
+  }
+#endif
+
+  /* ---------- initialize trigger events ---------------------------------- */
+
+  /* initialize trigger events information */
+  for (i = 0; i < MAX_NUM_ELEMENTS; i++)
+    trigger_events[i] = EP_BITMASK_DEFAULT;
+
+#if 1
+  /* add trigger events from element change event properties */
+  for (i = 0; i < MAX_NUM_ELEMENTS; i++)
+  {
+    struct ElementInfo *ei = &element_info[i];
+
+    for (j = 0; j < ei->num_change_pages; j++)
+    {
+      if (!ei->change_page[j].can_change)
+	continue;
+
+      if (ei->change_page[j].events & CH_EVENT_BIT(CE_BY_OTHER_ACTION))
+      {
+	int trigger_element = ei->change_page[j].trigger_element;
+
+	trigger_events[trigger_element] |= ei->change_page[j].events;
+      }
+    }
+  }
+#else
+  /* add trigger events from element change event properties */
+  for (i = 0; i < MAX_NUM_ELEMENTS; i++)
+    if (HAS_CHANGE_EVENT(i, CE_BY_OTHER_ACTION))
+      trigger_events[element_info[i].change->trigger_element] |=
+	element_info[i].change->events;
+#endif
+
+  /* ---------- initialize push delay -------------------------------------- */
+
+  /* initialize push delay values to default */
+  for (i = 0; i < MAX_NUM_ELEMENTS; i++)
   {
-    changing_element[i].base_element = EL_UNDEFINED;
-    changing_element[i].next_element = EL_UNDEFINED;
-    changing_element[i].change_delay = -1;
-    changing_element[i].pre_change_function = NULL;
-    changing_element[i].change_function = NULL;
-    changing_element[i].post_change_function = NULL;
+    if (!IS_CUSTOM_ELEMENT(i))
+    {
+      element_info[i].push_delay_fixed  = game.default_push_delay_fixed;
+      element_info[i].push_delay_random = game.default_push_delay_random;
+    }
   }
 
-  i = 0;
-  while (changing_element_list[i].base_element != EL_UNDEFINED)
+  /* set push delay value for certain elements from pre-defined list */
+  for (i = 0; push_delay_list[i].element != EL_UNDEFINED; i++)
   {
-    struct ChangingElementInfo *ce = &changing_element_list[i];
-    int element = ce->base_element;
+    int e = push_delay_list[i].element;
+
+    element_info[e].push_delay_fixed  = push_delay_list[i].push_delay_fixed;
+    element_info[e].push_delay_random = push_delay_list[i].push_delay_random;
+  }
+
+  /* ---------- initialize move stepsize ----------------------------------- */
 
-    changing_element[element].base_element         = ce->base_element;
-    changing_element[element].next_element         = ce->next_element;
-    changing_element[element].change_delay         = ce->change_delay;
-    changing_element[element].pre_change_function  = ce->pre_change_function;
-    changing_element[element].change_function      = ce->change_function;
-    changing_element[element].post_change_function = ce->post_change_function;
+  /* initialize move stepsize values to default */
+  for (i = 0; i < MAX_NUM_ELEMENTS; i++)
+    if (!IS_CUSTOM_ELEMENT(i))
+      element_info[i].move_stepsize = MOVE_STEPSIZE_NORMAL;
+
+  /* set move stepsize value for certain elements from pre-defined list */
+  for (i = 0; move_stepsize_list[i].element != EL_UNDEFINED; i++)
+  {
+    int e = move_stepsize_list[i].element;
 
-    i++;
+    element_info[e].move_stepsize = move_stepsize_list[i].move_stepsize;
   }
+
+  /* ---------- initialize gem count --------------------------------------- */
+
+  /* initialize gem count values for each element */
+  for (i = 0; i < MAX_NUM_ELEMENTS; i++)
+    if (!IS_CUSTOM_ELEMENT(i))
+      element_info[i].collect_count = 0;
+
+  /* add gem count values for all elements from pre-defined list */
+  for (i = 0; collect_count_list[i].element != EL_UNDEFINED; i++)
+    element_info[collect_count_list[i].element].collect_count =
+      collect_count_list[i].count;
 }
 
 
@@ -588,7 +997,7 @@ void InitGame()
   boolean emulate_bd = TRUE;	/* unless non-BOULDERDASH elements found */
   boolean emulate_sb = TRUE;	/* unless non-SOKOBAN     elements found */
   boolean emulate_sp = TRUE;	/* unless non-SUPAPLEX    elements found */
-  int i, j, x, y;
+  int i, j, k, x, y;
 
   InitGameEngine();
 
@@ -605,12 +1014,12 @@ void InitGame()
   /* don't play tapes over network */
   network_playing = (options.network && !tape.playing);
 
-  for (i=0; i<MAX_PLAYERS; i++)
+  for (i = 0; i < MAX_PLAYERS; i++)
   {
     struct PlayerInfo *player = &stored_player[i];
 
     player->index_nr = i;
-    player->element_nr = EL_PLAYER1 + i;
+    player->element_nr = EL_PLAYER_1 + i;
 
     player->present = FALSE;
     player->active = FALSE;
@@ -625,10 +1034,9 @@ void InitGame()
     player->lights_still_needed = 0;
     player->friends_still_needed = 0;
 
-    for (j=0; j<4; j++)
+    for (j = 0; j < 4; j++)
       player->key[j] = FALSE;
 
-    player->dynamite = 0;
     player->dynabomb_count = 0;
     player->dynabomb_size = 1;
     player->dynabombs_left = 0;
@@ -636,25 +1044,85 @@ void InitGame()
 
     player->MovDir = MV_NO_MOVING;
     player->MovPos = 0;
-    player->Pushing = FALSE;
-    player->Switching = FALSE;
     player->GfxPos = 0;
+    player->GfxDir = MV_NO_MOVING;
+    player->GfxAction = ACTION_DEFAULT;
     player->Frame = 0;
+    player->StepFrame = 0;
+
+    player->use_murphy_graphic = FALSE;
 
     player->actual_frame_counter = 0;
 
-    player->frame_reset_delay = 0;
+    player->step_counter = 0;
 
     player->last_move_dir = MV_NO_MOVING;
+
+    player->is_waiting = FALSE;
     player->is_moving = FALSE;
+    player->is_digging = FALSE;
+    player->is_snapping = FALSE;
+    player->is_collecting = FALSE;
+    player->is_pushing = FALSE;
+    player->is_switching = FALSE;
+
+    player->is_bored = FALSE;
+    player->is_sleeping = FALSE;
+
+    player->frame_counter_bored = -1;
+    player->frame_counter_sleeping = -1;
+
+    player->anim_delay_counter = 0;
+    player->post_delay_counter = 0;
+
+    player->action_waiting = ACTION_DEFAULT;
+    player->last_action_waiting = ACTION_DEFAULT;
+    player->special_action_bored = ACTION_DEFAULT;
+    player->special_action_sleeping = ACTION_DEFAULT;
+
+    player->num_special_action_bored = 0;
+    player->num_special_action_sleeping = 0;
+
+    /* determine number of special actions for bored and sleeping animation */
+    for (j = ACTION_BORING_1; j <= ACTION_BORING_LAST; j++)
+    {
+      boolean found = FALSE;
+
+      for (k = 0; k < NUM_DIRECTIONS; k++)
+	if (el_act_dir2img(player->element_nr, j, k) !=
+	    el_act_dir2img(player->element_nr, ACTION_DEFAULT, k))
+	  found = TRUE;
+
+      if (found)
+	player->num_special_action_bored++;
+      else
+	break;
+    }
+    for (j = ACTION_SLEEPING_1; j <= ACTION_SLEEPING_LAST; j++)
+    {
+      boolean found = FALSE;
+
+      for (k = 0; k < NUM_DIRECTIONS; k++)
+	if (el_act_dir2img(player->element_nr, j, k) !=
+	    el_act_dir2img(player->element_nr, ACTION_DEFAULT, k))
+	  found = TRUE;
+
+      if (found)
+	player->num_special_action_sleeping++;
+      else
+	break;
+    }
+
+    player->switch_x = -1;
+    player->switch_y = -1;
+
+    player->show_envelope = 0;
 
     player->move_delay       = game.initial_move_delay;
     player->move_delay_value = game.initial_move_delay_value;
 
     player->push_delay = 0;
-    player->push_delay_value = 5;
-
-    player->snapped = FALSE;
+    player->push_delay_value = game.initial_push_delay_value;
 
     player->last_jx = player->last_jy = 0;
     player->jx = player->jy = 0;
@@ -662,6 +1130,8 @@ void InitGame()
     player->shield_normal_time_left = 0;
     player->shield_deadly_time_left = 0;
 
+    player->inventory_size = 0;
+
     DigField(player, 0, 0, 0, 0, DF_NO_PUSH);
     SnapField(player, 0, 0);
 
@@ -692,46 +1162,62 @@ void InitGame()
 
   AllPlayersGone = FALSE;
 
-  game.yam_content_nr = 0;
+  game.yamyam_content_nr = 0;
   game.magic_wall_active = FALSE;
   game.magic_wall_time_left = 0;
   game.light_time_left = 0;
   game.timegate_time_left = 0;
   game.switchgate_pos = 0;
   game.balloon_dir = MV_NO_MOVING;
+  game.gravity = level.initial_gravity;
   game.explosions_delayed = TRUE;
 
-  for (i=0; i<4; i++)
+  game.envelope_active = FALSE;
+
+  for (i = 0; i < 4; i++)
   {
     game.belt_dir[i] = MV_NO_MOVING;
     game.belt_dir_nr[i] = 3;		/* not moving, next moving left */
   }
 
-  for (i=0; i<MAX_NUM_AMOEBA; i++)
+  for (i = 0; i < MAX_NUM_AMOEBA; i++)
     AmoebaCnt[i] = AmoebaCnt2[i] = 0;
 
-  for (x=0; x<lev_fieldx; x++)
+  for (x = 0; x < lev_fieldx; x++)
   {
-    for (y=0; y<lev_fieldy; y++)
+    for (y = 0; y < lev_fieldy; y++)
     {
-      Feld[x][y] = Ur[x][y];
+      Feld[x][y] = level.field[x][y];
       MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
-      Store[x][y] = Store2[x][y] = StorePlayer[x][y] = 0;
+      ChangeDelay[x][y] = 0;
+      ChangePage[x][y] = -1;
+      Store[x][y] = Store2[x][y] = StorePlayer[x][y] = Back[x][y] = 0;
       AmoebaNr[x][y] = 0;
-      JustStopped[x][y] = 0;
+      WasJustMoving[x][y] = 0;
+      WasJustFalling[x][y] = 0;
       Stop[x][y] = FALSE;
+      Pushed[x][y] = FALSE;
+
+      Changed[x][y] = CE_BITMASK_DEFAULT;
+      ChangeEvent[x][y] = CE_BITMASK_DEFAULT;
+
       ExplodePhase[x][y] = 0;
       ExplodeField[x][y] = EX_NO_EXPLOSION;
 
+      RunnerVisit[x][y] = 0;
+      PlayerVisit[x][y] = 0;
+
       GfxFrame[x][y] = 0;
-      GfxAction[x][y] = ACTION_DEFAULT;
       GfxRandom[x][y] = INIT_GFX_RANDOM();
+      GfxElement[x][y] = EL_UNDEFINED;
+      GfxAction[x][y] = ACTION_DEFAULT;
+      GfxDir[x][y] = MV_NO_MOVING;
     }
   }
 
-  for(y=0; y<lev_fieldy; y++)
+  for (y = 0; y < lev_fieldy; y++)
   {
-    for(x=0; x<lev_fieldx; x++)
+    for (x = 0; x < lev_fieldx; x++)
     {
       if (emulate_bd && !IS_BD_ELEMENT(Feld[x][y]))
 	emulate_bd = FALSE;
@@ -751,18 +1237,18 @@ void InitGame()
 		    emulate_sp ? EMU_SUPAPLEX : EMU_NONE);
 
   /* correct non-moving belts to start moving left */
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
     if (game.belt_dir[i] == MV_NO_MOVING)
       game.belt_dir_nr[i] = 3;		/* not moving, next moving left */
 
   /* check if any connected player was not found in playfield */
-  for (i=0; i<MAX_PLAYERS; i++)
+  for (i = 0; i < MAX_PLAYERS; i++)
   {
     struct PlayerInfo *player = &stored_player[i];
 
     if (player->connected && !player->present)
     {
-      for (j=0; j<MAX_PLAYERS; j++)
+      for (j = 0; j < MAX_PLAYERS; j++)
       {
 	struct PlayerInfo *some_player = &stored_player[j];
 	int jx = some_player->jx, jy = some_player->jy;
@@ -788,7 +1274,7 @@ void InitGame()
   {
     /* when playing a tape, eliminate all players who do not participate */
 
-    for (i=0; i<MAX_PLAYERS; i++)
+    for (i = 0; i < MAX_PLAYERS; i++)
     {
       if (stored_player[i].active && !tape.player_participates[i])
       {
@@ -805,11 +1291,11 @@ void InitGame()
   {
     /* when in single player mode, eliminate all but the first active player */
 
-    for (i=0; i<MAX_PLAYERS; i++)
+    for (i = 0; i < MAX_PLAYERS; i++)
     {
       if (stored_player[i].active)
       {
-	for (j=i+1; j<MAX_PLAYERS; j++)
+	for (j = i + 1; j < MAX_PLAYERS; j++)
 	{
 	  if (stored_player[j].active)
 	  {
@@ -828,14 +1314,14 @@ void InitGame()
   /* when recording the game, store which players take part in the game */
   if (tape.recording)
   {
-    for (i=0; i<MAX_PLAYERS; i++)
+    for (i = 0; i < MAX_PLAYERS; i++)
       if (stored_player[i].active)
 	tape.player_participates[i] = TRUE;
   }
 
   if (options.debug)
   {
-    for (i=0; i<MAX_PLAYERS; i++)
+    for (i = 0; i < MAX_PLAYERS; i++)
     {
       struct PlayerInfo *player = &stored_player[i];
 
@@ -870,46 +1356,137 @@ void InitGame()
   if (lev_fieldy + (SBY_Upper == -1 ? 2 : 0) <= SCR_FIELDY)
     SBY_Upper = SBY_Lower = -1 * (SCR_FIELDY - lev_fieldy) / 2;
 
-  scroll_x = SBX_Left;
-  scroll_y = SBY_Upper;
-  if (local_player->jx >= SBX_Left + MIDPOSX)
-    scroll_x = (local_player->jx <= SBX_Right + MIDPOSX ?
-		local_player->jx - MIDPOSX :
-		SBX_Right);
-  if (local_player->jy >= SBY_Upper + MIDPOSY)
-    scroll_y = (local_player->jy <= SBY_Lower + MIDPOSY ?
-		local_player->jy - MIDPOSY :
-		SBY_Lower);
+  /* if local player not found, look for custom element that might create
+     the player (make some assumptions about the right custom element) */
+  if (!local_player->present)
+  {
+    int start_x = 0, start_y = 0;
+    int found_rating = 0;
+    int found_element = EL_UNDEFINED;
 
-  CloseDoor(DOOR_CLOSE_1);
+    for (y = 0; y < lev_fieldy; y++) for (x = 0; x < lev_fieldx; x++)
+    {
+      int element = Feld[x][y];
+      int content;
+      int xx, yy;
+      boolean is_player;
 
-  DrawLevel();
-  DrawAllPlayers();
+      if (!IS_CUSTOM_ELEMENT(element))
+	continue;
 
-  /* after drawing the level, correct some elements */
-  if (game.timegate_time_left == 0)
-    CloseAllOpenTimegates();
+      if (CAN_CHANGE(element))
+      {
+	for (i = 0; i < element_info[element].num_change_pages; i++)
+	{
+	  content = element_info[element].change_page[i].target_element;
+	  is_player = ELEM_IS_PLAYER(content);
 
-  if (setup.soft_scrolling)
-    BlitBitmap(fieldbuffer, backbuffer, FX, FY, SXSIZE, SYSIZE, SX, SY);
+	  if (is_player && (found_rating < 3 || element < found_element))
+	  {
+	    start_x = x;
+	    start_y = y;
 
-  redraw_mask |= REDRAW_FROM_BACKBUFFER;
-  FadeToFront();
+	    found_rating = 3;
+	    found_element = element;
+	  }
+	}
+      }
 
-  /* copy default game door content to main double buffer */
-  BlitBitmap(graphic_info[IMG_GLOBAL_DOOR].bitmap, drawto,
-	     DOOR_GFX_PAGEX5, DOOR_GFX_PAGEY1, DXSIZE, DYSIZE, DX, DY);
+      for (yy = 0; yy < 3; yy++) for (xx = 0; xx < 3; xx++)
+      {
+	content = element_info[element].content[xx][yy];
+	is_player = ELEM_IS_PLAYER(content);
 
-  if (level_nr < 100)
-    DrawText(DX + XX_LEVEL, DY + YY_LEVEL,
-	     int2str(level_nr, 2), FS_SMALL, FC_YELLOW);
-  else
-  {
-    DrawTextExt(drawto, DX + XX_EMERALDS, DY + YY_EMERALDS,
-		int2str(level_nr, 3), FS_SMALL, FC_SPECIAL3, FONT_OPAQUE);
-    BlitBitmap(drawto, drawto,
+	if (is_player && (found_rating < 2 || element < found_element))
+	{
+	  start_x = x + xx - 1;
+	  start_y = y + yy - 1;
+
+	  found_rating = 2;
+	  found_element = element;
+	}
+
+	if (!CAN_CHANGE(element))
+	  continue;
+
+	for (i = 0; i < element_info[element].num_change_pages; i++)
+	{
+	  content = element_info[element].change_page[i].content[xx][yy];
+	  is_player = ELEM_IS_PLAYER(content);
+
+	  if (is_player && (found_rating < 1 || element < found_element))
+	  {
+	    start_x = x + xx - 1;
+	    start_y = y + yy - 1;
+
+	    found_rating = 1;
+	    found_element = element;
+	  }
+	}
+      }
+    }
+
+    scroll_x = (start_x < SBX_Left  + MIDPOSX ? SBX_Left :
+		start_x > SBX_Right + MIDPOSX ? SBX_Right :
+		start_x - MIDPOSX);
+
+    scroll_y = (start_y < SBY_Upper + MIDPOSY ? SBY_Upper :
+		start_y > SBY_Lower + MIDPOSY ? SBY_Lower :
+		start_y - MIDPOSY);
+  }
+  else
+  {
+#if 1
+    scroll_x = (local_player->jx < SBX_Left  + MIDPOSX ? SBX_Left :
+		local_player->jx > SBX_Right + MIDPOSX ? SBX_Right :
+		local_player->jx - MIDPOSX);
+
+    scroll_y = (local_player->jy < SBY_Upper + MIDPOSY ? SBY_Upper :
+		local_player->jy > SBY_Lower + MIDPOSY ? SBY_Lower :
+		local_player->jy - MIDPOSY);
+#else
+    scroll_x = SBX_Left;
+    scroll_y = SBY_Upper;
+    if (local_player->jx >= SBX_Left + MIDPOSX)
+      scroll_x = (local_player->jx <= SBX_Right + MIDPOSX ?
+		  local_player->jx - MIDPOSX :
+		  SBX_Right);
+    if (local_player->jy >= SBY_Upper + MIDPOSY)
+      scroll_y = (local_player->jy <= SBY_Lower + MIDPOSY ?
+		  local_player->jy - MIDPOSY :
+		  SBY_Lower);
+#endif
+  }
+
+  CloseDoor(DOOR_CLOSE_1);
+
+  DrawLevel();
+  DrawAllPlayers();
+
+  /* after drawing the level, correct some elements */
+  if (game.timegate_time_left == 0)
+    CloseAllOpenTimegates();
+
+  if (setup.soft_scrolling)
+    BlitBitmap(fieldbuffer, backbuffer, FX, FY, SXSIZE, SYSIZE, SX, SY);
+
+  redraw_mask |= REDRAW_FROM_BACKBUFFER;
+  FadeToFront();
+
+  /* copy default game door content to main double buffer */
+  BlitBitmap(graphic_info[IMG_GLOBAL_DOOR].bitmap, drawto,
+	     DOOR_GFX_PAGEX5, DOOR_GFX_PAGEY1, DXSIZE, DYSIZE, DX, DY);
+
+  if (level_nr < 100)
+    DrawText(DX + XX_LEVEL, DY + YY_LEVEL, int2str(level_nr, 2), FONT_TEXT_2);
+  else
+  {
+    DrawTextExt(drawto, DX + XX_EMERALDS, DY + YY_EMERALDS,
+		int2str(level_nr, 3), FONT_LEVEL_NUMBER, BLIT_OPAQUE);
+    BlitBitmap(drawto, drawto,
 	       DX + XX_EMERALDS, DY + YY_EMERALDS + 1,
-	       FONT5_XSIZE * 3, FONT5_YSIZE - 1,
+	       getFontWidth(FONT_LEVEL_NUMBER) * 3,
+	       getFontHeight(FONT_LEVEL_NUMBER) - 1,
 	       DX + XX_LEVEL - 1, DY + YY_LEVEL + 1);
   }
 
@@ -929,18 +1506,23 @@ void InitGame()
 
   OpenDoor(DOOR_OPEN_ALL);
 
-  PlaySoundStereo(SND_GAME_STARTING, SOUND_MAX_RIGHT);
+  PlaySoundStereo(SND_GAME_STARTING, SOUND_MIDDLE);
+
   if (setup.sound_music)
-    PlayMusic(level_nr);
+    PlayLevelMusic();
 
-  KeyboardAutoRepeatOff();
+  KeyboardAutoRepeatOffUnlessAutoplay();
 
   if (options.debug)
   {
-    for (i=0; i<4; i++)
+    for (i = 0; i < 4; i++)
       printf("Player %d %sactive.\n",
 	     i + 1, (stored_player[i].active ? "" : "not "));
   }
+
+#if 0
+  printf("::: starting game [%d]\n", FrameCounter);
+#endif
 }
 
 void InitMovDir(int x, int y)
@@ -1019,35 +1601,75 @@ void InitMovDir(int x, int y)
       break;
 
     default:
-      MovDir[x][y] = 1 << RND(4);
-      if (element != EL_BUG &&
-	  element != EL_SPACESHIP &&
-	  element != EL_BD_BUTTERFLY &&
-	  element != EL_BD_FIREFLY)
-	break;
-
-      for (i=0; i<4; i++)
+      if (IS_CUSTOM_ELEMENT(element))
       {
-	int x1 = x + xy[i][0];
-	int y1 = y + xy[i][1];
-
-	if (!IN_LEV_FIELD(x1, y1) || !IS_FREE(x1, y1))
+	if (element_info[element].move_direction_initial != MV_NO_MOVING)
+	  MovDir[x][y] = element_info[element].move_direction_initial;
+	else if (element_info[element].move_pattern == MV_ALL_DIRECTIONS ||
+		 element_info[element].move_pattern == MV_TURNING_LEFT ||
+		 element_info[element].move_pattern == MV_TURNING_RIGHT)
+	  MovDir[x][y] = 1 << RND(4);
+	else if (element_info[element].move_pattern == MV_HORIZONTAL)
+	  MovDir[x][y] = (RND(2) ? MV_LEFT : MV_RIGHT);
+	else if (element_info[element].move_pattern == MV_VERTICAL)
+	  MovDir[x][y] = (RND(2) ? MV_UP : MV_DOWN);
+	else if (element_info[element].move_pattern & MV_ANY_DIRECTION)
+	  MovDir[x][y] = element_info[element].move_pattern;
+	else if (element_info[element].move_pattern == MV_ALONG_LEFT_SIDE ||
+		 element_info[element].move_pattern == MV_ALONG_RIGHT_SIDE)
 	{
-	  if (element == EL_BUG || element == EL_BD_BUTTERFLY)
+	  for (i = 0; i < 4; i++)
 	  {
-	    MovDir[x][y] = direction[0][i];
-	    break;
+	    int x1 = x + xy[i][0];
+	    int y1 = y + xy[i][1];
+
+	    if (!IN_LEV_FIELD(x1, y1) || !IS_FREE(x1, y1))
+	    {
+	      if (element_info[element].move_pattern == MV_ALONG_RIGHT_SIDE)
+		MovDir[x][y] = direction[0][i];
+	      else
+		MovDir[x][y] = direction[1][i];
+
+	      break;
+	    }
 	  }
-	  else if (element == EL_SPACESHIP || element == EL_BD_FIREFLY ||
-		   element == EL_SP_SNIKSNAK || element == EL_SP_ELECTRON)
+	}		 
+      }
+      else
+      {
+	MovDir[x][y] = 1 << RND(4);
+
+	if (element != EL_BUG &&
+	    element != EL_SPACESHIP &&
+	    element != EL_BD_BUTTERFLY &&
+	    element != EL_BD_FIREFLY)
+	  break;
+
+	for (i = 0; i < 4; i++)
+	{
+	  int x1 = x + xy[i][0];
+	  int y1 = y + xy[i][1];
+
+	  if (!IN_LEV_FIELD(x1, y1) || !IS_FREE(x1, y1))
 	  {
-	    MovDir[x][y] = direction[1][i];
-	    break;
+	    if (element == EL_BUG || element == EL_BD_BUTTERFLY)
+	    {
+	      MovDir[x][y] = direction[0][i];
+	      break;
+	    }
+	    else if (element == EL_SPACESHIP || element == EL_BD_FIREFLY ||
+		     element == EL_SP_SNIKSNAK || element == EL_SP_ELECTRON)
+	    {
+	      MovDir[x][y] = direction[1][i];
+	      break;
+	    }
 	  }
 	}
       }
       break;
   }
+
+  GfxDir[x][y] = MovDir[x][y];
 }
 
 void InitAmoebaNr(int x, int y)
@@ -1057,7 +1679,7 @@ void InitAmoebaNr(int x, int y)
 
   if (group_nr == 0)
   {
-    for (i=1; i<MAX_NUM_AMOEBA; i++)
+    for (i = 1; i < MAX_NUM_AMOEBA; i++)
     {
       if (AmoebaCnt[i] == 0)
       {
@@ -1080,30 +1702,35 @@ void GameWon()
   if (local_player->MovPos)
     return;
 
+#if 1
+  if (tape.auto_play)		/* tape might already be stopped here */
+    tape.auto_play_level_solved = TRUE;
+#else
   if (tape.playing && tape.auto_play)
     tape.auto_play_level_solved = TRUE;
+#endif
 
   local_player->LevelSolved = FALSE;
 
-  PlaySoundStereo(SND_GAME_WINNING, SOUND_MAX_RIGHT);
+  PlaySoundStereo(SND_GAME_WINNING, SOUND_MIDDLE);
 
   if (TimeLeft)
   {
     if (!tape.playing && setup.sound_loops)
-      PlaySoundExt(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_VOLUME, SOUND_MAX_RIGHT,
+      PlaySoundExt(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_VOLUME, SOUND_MIDDLE,
 		   SND_CTRL_PLAY_LOOP);
 
     while (TimeLeft > 0)
     {
       if (!tape.playing && !setup.sound_loops)
-	PlaySoundStereo(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_RIGHT);
+	PlaySoundStereo(SND_GAME_LEVELTIME_BONUS, SOUND_MIDDLE);
       if (TimeLeft > 0 && !(TimeLeft % 10))
-	RaiseScore(level.score[SC_ZEITBONUS]);
+	RaiseScore(level.score[SC_TIME_BONUS]);
       if (TimeLeft > 100 && !(TimeLeft % 10))
 	TimeLeft -= 10;
       else
 	TimeLeft--;
-      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FONT_TEXT_2);
       BackToFront();
 
       if (!tape.playing)
@@ -1116,20 +1743,20 @@ void GameWon()
   else if (level.time == 0)		/* level without time limit */
   {
     if (!tape.playing && setup.sound_loops)
-      PlaySoundExt(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_VOLUME, SOUND_MAX_RIGHT,
+      PlaySoundExt(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_VOLUME, SOUND_MIDDLE,
 		   SND_CTRL_PLAY_LOOP);
 
     while (TimePlayed < 999)
     {
       if (!tape.playing && !setup.sound_loops)
-	PlaySoundStereo(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_RIGHT);
+	PlaySoundStereo(SND_GAME_LEVELTIME_BONUS, SOUND_MIDDLE);
       if (TimePlayed < 999 && !(TimePlayed % 10))
-	RaiseScore(level.score[SC_ZEITBONUS]);
+	RaiseScore(level.score[SC_TIME_BONUS]);
       if (TimePlayed < 900 && !(TimePlayed % 10))
 	TimePlayed += 10;
       else
 	TimePlayed++;
-      DrawText(DX_TIME, DY_TIME, int2str(TimePlayed, 3), FS_SMALL, FC_YELLOW);
+      DrawText(DX_TIME, DY_TIME, int2str(TimePlayed, 3), FONT_TEXT_2);
       BackToFront();
 
       if (!tape.playing)
@@ -1140,9 +1767,17 @@ void GameWon()
       StopSound(SND_GAME_LEVELTIME_BONUS);
   }
 
-#if 0
-  FadeSounds();
-#endif
+  /* close exit door after last player */
+  if ((Feld[ExitX][ExitY] == EL_EXIT_OPEN ||
+       Feld[ExitX][ExitY] == EL_SP_EXIT_OPEN) && AllPlayersGone)
+  {
+    int element = Feld[ExitX][ExitY];
+
+    Feld[ExitX][ExitY] = (element == EL_EXIT_OPEN ? EL_EXIT_CLOSING :
+			  EL_SP_EXIT_CLOSING);
+
+    PlayLevelSoundElementAction(ExitX, ExitY, element, ACTION_CLOSING);
+  }
 
   /* Hero disappears */
   DrawLevelField(ExitX, ExitY);
@@ -1172,7 +1807,7 @@ void GameWon()
 
   if ((hi_pos = NewHiScore()) >= 0) 
   {
-    game_status = HALLOFFAME;
+    game_status = GAME_MODE_SCORES;
     DrawHallOfFame(hi_pos);
     if (raise_level)
     {
@@ -1182,7 +1817,7 @@ void GameWon()
   }
   else
   {
-    game_status = MAINMENU;
+    game_status = GAME_MODE_MAIN;
     if (raise_level)
     {
       level_nr++;
@@ -1205,7 +1840,7 @@ int NewHiScore()
       local_player->score < highscore[MAX_SCORE_ENTRIES - 1].Score) 
     return -1;
 
-  for (k=0; k<MAX_SCORE_ENTRIES; k++) 
+  for (k = 0; k < MAX_SCORE_ENTRIES; k++) 
   {
     if (local_player->score > highscore[k].Score)
     {
@@ -1216,14 +1851,14 @@ int NewHiScore()
 	int m = MAX_SCORE_ENTRIES - 1;
 
 #ifdef ONE_PER_NAME
-	for (l=k; l<MAX_SCORE_ENTRIES; l++)
+	for (l = k; l < MAX_SCORE_ENTRIES; l++)
 	  if (!strcmp(setup.player_name, highscore[l].Name))
 	    m = l;
 	if (m == k)	/* player's new highscore overwrites his old one */
 	  goto put_into_list;
 #endif
 
-	for (l=m; l>k; l--)
+	for (l = m; l > k; l--)
 	{
 	  strcpy(highscore[l].Name, highscore[l - 1].Name);
 	  highscore[l].Score = highscore[l - 1].Score;
@@ -1254,6 +1889,22 @@ int NewHiScore()
   return position;
 }
 
+void InitPlayerGfxAnimation(struct PlayerInfo *player, int action, int dir)
+{
+  if (player->GfxAction != action || player->GfxDir != dir)
+  {
+#if 0
+    printf("Player frame reset! (%d => %d, %d => %d)\n",
+	   player->GfxAction, action, player->GfxDir, dir);
+#endif
+
+    player->GfxAction = action;
+    player->GfxDir = dir;
+    player->Frame = 0;
+    player->StepFrame = 0;
+  }
+}
+
 static void ResetRandomAnimationValue(int x, int y)
 {
   GfxRandom[x][y] = INIT_GFX_RANDOM();
@@ -1261,38 +1912,24 @@ static void ResetRandomAnimationValue(int x, int y)
 
 static void ResetGfxAnimation(int x, int y)
 {
-#if 0
-#if 1
-  int element = Feld[x][y];
-  int graphic = el2img(element);
-
-  /* reset random value not until one full delay cycle was reached */
-  if (ANIM_MODE(graphic) == ANIM_RANDOM &&
-      GfxFrame[x][y] > ANIM_DELAY(graphic))
-#endif
-    ResetRandomAnimationValue(x, y);
-#endif
-
   GfxFrame[x][y] = 0;
   GfxAction[x][y] = ACTION_DEFAULT;
-
-#if 0
-  if (Feld[x][y] == EL_ROCK)
-    printf("ResetGfxAnimation: EL_ROCK [%d, %d]\n",
-	   JustStopped[x][y], MovDir[x][y]);
-#endif
+  GfxDir[x][y] = MovDir[x][y];
 }
 
 void InitMovingField(int x, int y, int direction)
 {
   int element = Feld[x][y];
-  int newx = x + (direction == MV_LEFT ? -1 : direction == MV_RIGHT ? +1 : 0);
-  int newy = y + (direction == MV_UP   ? -1 : direction == MV_DOWN  ? +1 : 0);
+  int dx = (direction == MV_LEFT ? -1 : direction == MV_RIGHT ? +1 : 0);
+  int dy = (direction == MV_UP   ? -1 : direction == MV_DOWN  ? +1 : 0);
+  int newx = x + dx;
+  int newy = y + dy;
 
-  if (!JustStopped[x][y] || direction != MovDir[x][y])
+  if (!WasJustMoving[x][y] || direction != MovDir[x][y])
     ResetGfxAnimation(x, y);
 
   MovDir[newx][newy] = MovDir[x][y] = direction;
+  GfxDir[x][y] = direction;
 
   if (Feld[newx][newy] == EL_EMPTY)
     Feld[newx][newy] = EL_BLOCKED;
@@ -1303,8 +1940,9 @@ void InitMovingField(int x, int y, int direction)
     GfxAction[x][y] = ACTION_MOVING;
 
   GfxFrame[newx][newy] = GfxFrame[x][y];
-  GfxAction[newx][newy] = GfxAction[x][y];
   GfxRandom[newx][newy] = GfxRandom[x][y];
+  GfxAction[newx][newy] = GfxAction[x][y];
+  GfxDir[newx][newy] = GfxDir[x][y];
 }
 
 void Moving2Blocked(int x, int y, int *goes_to_x, int *goes_to_y)
@@ -1376,16 +2014,28 @@ static int MovingOrBlocked2ElementIfNotLeaving(int x, int y)
 static void RemoveField(int x, int y)
 {
   Feld[x][y] = EL_EMPTY;
+
   MovPos[x][y] = 0;
   MovDir[x][y] = 0;
   MovDelay[x][y] = 0;
+
+  AmoebaNr[x][y] = 0;
+  ChangeDelay[x][y] = 0;
+  ChangePage[x][y] = -1;
+  Pushed[x][y] = FALSE;
+
+  GfxElement[x][y] = EL_UNDEFINED;
+  GfxAction[x][y] = ACTION_DEFAULT;
+  GfxDir[x][y] = MV_NO_MOVING;
 }
 
 void RemoveMovingField(int x, int y)
 {
   int oldx = x, oldy = y, newx = x, newy = y;
+  int element = Feld[x][y];
+  int next_element = EL_UNDEFINED;
 
-  if (Feld[x][y] != EL_BLOCKED && !IS_MOVING(x, y))
+  if (element != EL_BLOCKED && !IS_MOVING(x, y))
     return;
 
   if (IS_MOVING(x, y))
@@ -1394,28 +2044,27 @@ void RemoveMovingField(int x, int y)
     if (Feld[newx][newy] != EL_BLOCKED)
       return;
   }
-  else if (Feld[x][y] == EL_BLOCKED)
+  else if (element == EL_BLOCKED)
   {
     Blocked2Moving(x, y, &oldx, &oldy);
     if (!IS_MOVING(oldx, oldy))
       return;
   }
 
-  if (Feld[x][y] == EL_BLOCKED &&
+  if (element == EL_BLOCKED &&
       (Feld[oldx][oldy] == EL_QUICKSAND_EMPTYING ||
        Feld[oldx][oldy] == EL_MAGIC_WALL_EMPTYING ||
        Feld[oldx][oldy] == EL_BD_MAGIC_WALL_EMPTYING ||
-       Feld[oldx][oldy] == EL_AMOEBA_DRIPPING))
-    Feld[oldx][oldy] = get_next_element(Feld[oldx][oldy]);
-  else
-    Feld[oldx][oldy] = EL_EMPTY;
+       Feld[oldx][oldy] == EL_AMOEBA_DROPPING))
+    next_element = get_next_element(Feld[oldx][oldy]);
+
+  RemoveField(oldx, oldy);
+  RemoveField(newx, newy);
 
   Store[oldx][oldy] = Store2[oldx][oldy] = 0;
 
-  Feld[newx][newy] = EL_EMPTY;
-  MovPos[oldx][oldy] = MovDir[oldx][oldy] = MovDelay[oldx][oldy] = 0;
-  MovPos[newx][newy] = MovDir[newx][newy] = MovDelay[newx][newy] = 0;
-  GfxAction[oldx][oldy] = GfxAction[newx][newy] = ACTION_DEFAULT;
+  if (next_element != EL_UNDEFINED)
+    Feld[oldx][oldy] = next_element;
 
   DrawLevelField(oldx, oldy);
   DrawLevelField(newx, newy);
@@ -1430,17 +2079,29 @@ void DrawDynamite(int x, int y)
   if (!IN_SCR_FIELD(sx, sy) || IS_PLAYER(x, y))
     return;
 
-  if (Store[x][y])
+  if (IS_WALKABLE_INSIDE(Back[x][y]))
+    return;
+
+  if (Back[x][y])
+    DrawGraphic(sx, sy, el2img(Back[x][y]), 0);
+  else if (Store[x][y])
     DrawGraphic(sx, sy, el2img(Store[x][y]), 0);
 
   frame = getGraphicAnimationFrame(graphic, GfxFrame[x][y]);
 
+#if 1
+  if (Back[x][y] || Store[x][y])
+    DrawGraphicThruMask(sx, sy, graphic, frame);
+  else
+    DrawGraphic(sx, sy, graphic, frame);
+#else
   if (game.emulation == EMU_SUPAPLEX)
     DrawGraphic(sx, sy, IMG_SP_DISK_RED, frame);
   else if (Store[x][y])
     DrawGraphicThruMask(sx, sy, graphic, frame);
   else
     DrawGraphic(sx, sy, graphic, frame);
+#endif
 }
 
 void CheckDynamite(int x, int y)
@@ -1452,22 +2113,98 @@ void CheckDynamite(int x, int y)
     if (MovDelay[x][y] != 0)
     {
       DrawDynamite(x, y);
-
-      /* !!! correct: "PlaySoundLevelActionIfLoop" etc. !!! */
-      PlaySoundLevelAction(x, y, ACTION_ACTIVE);
+      PlayLevelSoundActionIfLoop(x, y, ACTION_ACTIVE);
 
       return;
     }
   }
 
-  if (Feld[x][y] == EL_DYNAMITE_ACTIVE)
+#if 1
+  StopLevelSoundActionIfLoop(x, y, ACTION_ACTIVE);
+#else
+  if (Feld[x][y] == EL_DYNAMITE_ACTIVE ||
+      Feld[x][y] == EL_SP_DISK_RED_ACTIVE)
     StopSound(SND_DYNAMITE_ACTIVE);
   else
     StopSound(SND_DYNABOMB_ACTIVE);
+#endif
 
   Bang(x, y);
 }
 
+void RelocatePlayer(int x, int y, int element)
+{
+  struct PlayerInfo *player = &stored_player[element - EL_PLAYER_1];
+
+#if 1
+  RemoveField(x, y);		/* temporarily remove newly placed player */
+  DrawLevelField(x, y);
+#endif
+
+  if (player->present)
+  {
+    while (player->MovPos)
+    {
+      ScrollPlayer(player, SCROLL_GO_ON);
+      ScrollScreen(NULL, SCROLL_GO_ON);
+      FrameCounter++;
+
+      DrawPlayer(player);
+
+      BackToFront();
+      Delay(GAME_FRAME_DELAY);
+    }
+
+    DrawPlayer(player);		/* needed here only to cleanup last field */
+    DrawLevelField(player->jx, player->jy);	/* remove player graphic */
+
+    player->is_moving = FALSE;
+  }
+
+  Feld[x][y] = element;
+  InitPlayerField(x, y, element, TRUE);
+
+  if (player == local_player)
+  {
+    int scroll_xx = -999, scroll_yy = -999;
+
+    while (scroll_xx != scroll_x || scroll_yy != scroll_y)
+    {
+      int dx = 0, dy = 0;
+      int fx = FX, fy = FY;
+
+      scroll_xx = (local_player->jx < SBX_Left  + MIDPOSX ? SBX_Left :
+		   local_player->jx > SBX_Right + MIDPOSX ? SBX_Right :
+		   local_player->jx - MIDPOSX);
+
+      scroll_yy = (local_player->jy < SBY_Upper + MIDPOSY ? SBY_Upper :
+		   local_player->jy > SBY_Lower + MIDPOSY ? SBY_Lower :
+		   local_player->jy - MIDPOSY);
+
+      dx = (scroll_xx < scroll_x ? +1 : scroll_xx > scroll_x ? -1 : 0);
+      dy = (scroll_yy < scroll_y ? +1 : scroll_yy > scroll_y ? -1 : 0);
+
+      scroll_x -= dx;
+      scroll_y -= dy;
+
+      fx += dx * TILEX / 2;
+      fy += dy * TILEY / 2;
+
+      ScrollLevel(dx, dy);
+      DrawAllPlayers();
+
+      /* scroll in two steps of half tile size to make things smoother */
+      BlitBitmap(drawto_field, window, fx, fy, SXSIZE, SYSIZE, SX, SY);
+      FlushDisplay();
+      Delay(GAME_FRAME_DELAY);
+
+      /* scroll second step to align at full tile size */
+      BackToFront();
+      Delay(GAME_FRAME_DELAY);
+    }
+  }
+}
+
 void Explode(int ex, int ey, int phase, int mode)
 {
   int x, y;
@@ -1487,6 +2224,21 @@ void Explode(int ex, int ey, int phase, int mode)
   {
     int center_element = Feld[ex][ey];
 
+#if 0
+    /* --- This is only really needed (and now handled) in "Impact()". --- */
+    /* do not explode moving elements that left the explode field in time */
+    if (game.engine_version >= VERSION_IDENT(2,2,0,7) &&
+	center_element == EL_EMPTY && (mode == EX_NORMAL || mode == EX_CENTER))
+      return;
+#endif
+
+    if (mode == EX_NORMAL || mode == EX_CENTER)
+      PlayLevelSoundAction(ex, ey, ACTION_EXPLODING);
+
+    /* remove things displayed in background while burning dynamite */
+    if (Back[ex][ey] != EL_EMPTY && !IS_INDESTRUCTIBLE(Back[ex][ey]))
+      Back[ex][ey] = 0;
+
     if (IS_MOVING(ex, ey) || IS_BLOCKED(ex, ey))
     {
       /* put moving element to center field (and let it explode there) */
@@ -1495,8 +2247,10 @@ void Explode(int ex, int ey, int phase, int mode)
       Feld[ex][ey] = center_element;
     }
 
-    for (y=ey-1; y<=ey+1; y++) for(x=ex-1; x<=ex+1; x++)
+    for (y = ey - 1; y <= ey + 1; y++) for (x = ex - 1; x <= ex + 1; x++)
     {
+      int xx = x - ex + 1;
+      int yy = y - ey + 1;
       int element;
 
       if (!IN_LEV_FIELD(x, y) ||
@@ -1509,11 +2263,30 @@ void Explode(int ex, int ey, int phase, int mode)
       if (IS_MOVING(x, y) || IS_BLOCKED(x, y))
       {
 	element = MovingOrBlocked2Element(x, y);
-	RemoveMovingField(x, y);
+
+	if (!IS_EXPLOSION_PROOF(element))
+	  RemoveMovingField(x, y);
       }
 
-      if (IS_MASSIVE(element) || element == EL_FLAMES)
+#if 1
+
+#if 0
+      if (IS_EXPLOSION_PROOF(element))
+	continue;
+#else
+      /* indestructible elements can only explode in center (but not flames) */
+      if ((IS_EXPLOSION_PROOF(element) && (x != ex || y != ey)) ||
+	  element == EL_FLAMES)
+	continue;
+#endif
+
+#else
+      if ((IS_INDESTRUCTIBLE(element) &&
+	   (game.engine_version < VERSION_IDENT(2,2,0,0) ||
+	    (!IS_WALKABLE_OVER(element) && !IS_WALKABLE_UNDER(element)))) ||
+	  element == EL_FLAMES)
 	continue;
+#endif
 
       if (IS_PLAYER(x, y) && SHIELD_ON(PLAYERINFO(x, y)))
       {
@@ -1527,23 +2300,46 @@ void Explode(int ex, int ey, int phase, int mode)
 	continue;
       }
 
+      /* save walkable background elements while explosion on same tile */
+#if 0
+      if (IS_INDESTRUCTIBLE(element))
+	Back[x][y] = element;
+#else
+      if (IS_WALKABLE(element) && IS_INDESTRUCTIBLE(element))
+	Back[x][y] = element;
+#endif
+
+      /* ignite explodable elements reached by other explosion */
       if (element == EL_EXPLOSION)
 	element = Store2[x][y];
 
+#if 1
+      if (AmoebaNr[x][y] &&
+	  (element == EL_AMOEBA_FULL ||
+	   element == EL_BD_AMOEBA ||
+	   element == EL_AMOEBA_GROWING))
+      {
+	AmoebaCnt[AmoebaNr[x][y]]--;
+	AmoebaCnt2[AmoebaNr[x][y]]--;
+      }
+
+      RemoveField(x, y);
+#endif
+
       if (IS_PLAYER(ex, ey) && !PLAYER_PROTECTED(ex, ey))
       {
 	switch(StorePlayer[ex][ey])
 	{
-	  case EL_PLAYER2:
+	  case EL_PLAYER_2:
 	    Store[x][y] = EL_EMERALD_RED;
 	    break;
-	  case EL_PLAYER3:
+	  case EL_PLAYER_3:
 	    Store[x][y] = EL_EMERALD;
 	    break;
-	  case EL_PLAYER4:
+	  case EL_PLAYER_4:
 	    Store[x][y] = EL_EMERALD_PURPLE;
 	    break;
-	  case EL_PLAYER1:
+	  case EL_PLAYER_1:
 	  default:
 	    Store[x][y] = EL_EMERALD_YELLOW;
 	    break;
@@ -1562,10 +2358,13 @@ void Explode(int ex, int ey, int phase, int mode)
 	Store[x][y] = EL_BD_DIAMOND;
       else if (center_element == EL_SP_ELECTRON)
 	Store[x][y] = EL_SP_INFOTRON;
-      else if (center_element == EL_YAMYAM)
-	Store[x][y] = level.yam_content[game.yam_content_nr][x-ex+1][y-ey+1];
       else if (center_element == EL_AMOEBA_TO_DIAMOND)
 	Store[x][y] = level.amoeba_content;
+      else if (center_element == EL_YAMYAM)
+	Store[x][y] = level.yamyam_content[game.yamyam_content_nr][xx][yy];
+      else if (IS_CUSTOM_ELEMENT(center_element) &&
+	       element_info[center_element].content[xx][yy] != EL_EMPTY)
+	Store[x][y] = element_info[center_element].content[xx][yy];
       else if (element == EL_WALL_EMERALD)
 	Store[x][y] = EL_EMERALD;
       else if (element == EL_WALL_DIAMOND)
@@ -1582,31 +2381,48 @@ void Explode(int ex, int ey, int phase, int mode)
 	Store[x][y] = EL_PEARL;
       else if (element == EL_WALL_CRYSTAL)
 	Store[x][y] = EL_CRYSTAL;
-      else if (!IS_PFORTE(Store[x][y]))
+      else if (IS_CUSTOM_ELEMENT(element) && !CAN_EXPLODE(element))
+	Store[x][y] = element_info[element].content[1][1];
+      else
 	Store[x][y] = EL_EMPTY;
 
       if (x != ex || y != ey ||
 	  center_element == EL_AMOEBA_TO_DIAMOND || mode == EX_BORDER)
 	Store2[x][y] = element;
 
+#if 0
       if (AmoebaNr[x][y] &&
 	  (element == EL_AMOEBA_FULL ||
 	   element == EL_BD_AMOEBA ||
-	   element == EL_AMOEBA_CREATING))
+	   element == EL_AMOEBA_GROWING))
       {
 	AmoebaCnt[AmoebaNr[x][y]]--;
 	AmoebaCnt2[AmoebaNr[x][y]]--;
       }
 
-      Feld[x][y] = EL_EXPLOSION;
+#if 1
+      RemoveField(x, y);
+#else
       MovDir[x][y] = MovPos[x][y] = 0;
+      GfxDir[x][y] = MovDir[x][y];
       AmoebaNr[x][y] = 0;
+#endif
+#endif
+
+      Feld[x][y] = EL_EXPLOSION;
+#if 1
+      GfxElement[x][y] = center_element;
+#else
+      GfxElement[x][y] = EL_UNDEFINED;
+#endif
+
       ExplodePhase[x][y] = 1;
       Stop[x][y] = TRUE;
     }
 
     if (center_element == EL_YAMYAM)
-      game.yam_content_nr = (game.yam_content_nr + 1) % level.num_yam_contents;
+      game.yamyam_content_nr =
+	(game.yamyam_content_nr + 1) % level.num_yamyam_contents;
 
     return;
   }
@@ -1619,6 +2435,24 @@ void Explode(int ex, int ey, int phase, int mode)
 
   ExplodePhase[x][y] = (phase < last_phase ? phase + 1 : 0);
 
+#ifdef DEBUG
+
+  /* activate this even in non-DEBUG version until cause for crash in
+     getGraphicAnimationFrame() (see below) is found and eliminated */
+#endif
+#if 1
+
+  if (GfxElement[x][y] == EL_UNDEFINED)
+  {
+    printf("\n\n");
+    printf("Explode(): x = %d, y = %d: GfxElement == EL_UNDEFINED\n", x, y);
+    printf("Explode(): This should never happen!\n");
+    printf("\n\n");
+
+    GfxElement[x][y] = EL_EMPTY;
+  }
+#endif
+
   if (phase == first_phase_after_start)
   {
     int element = Store2[x][y];
@@ -1636,7 +2470,7 @@ void Explode(int ex, int ey, int phase, int mode)
 
     if (IS_PLAYER(x, y))
       KillHeroUnlessProtected(x, y);
-    else if (IS_EXPLOSIVE(element))
+    else if (CAN_EXPLODE_BY_FIRE(element))
     {
       Feld[x][y] = Store2[x][y];
       Store2[x][y] = 0;
@@ -1652,32 +2486,59 @@ void Explode(int ex, int ey, int phase, int mode)
 
     element = Feld[x][y] = Store[x][y];
     Store[x][y] = Store2[x][y] = 0;
+    GfxElement[x][y] = EL_UNDEFINED;
+
+    if (Back[x][y] && IS_INDESTRUCTIBLE(Back[x][y]))
+      element = Feld[x][y] = Back[x][y];
+    Back[x][y] = 0;
+
     MovDir[x][y] = MovPos[x][y] = MovDelay[x][y] = 0;
+    GfxDir[x][y] = MV_NO_MOVING;
+    ChangeDelay[x][y] = 0;
+    ChangePage[x][y] = -1;
+
     InitField(x, y, FALSE);
-    if (CAN_MOVE(element) || COULD_MOVE(element))
+    if (CAN_MOVE(element))
       InitMovDir(x, y);
     DrawLevelField(x, y);
 
+    TestIfElementTouchesCustomElement(x, y);
+
+    if (GFX_CRUMBLED(element))
+      DrawLevelFieldCrumbledSandNeighbours(x, y);
+
     if (IS_PLAYER(x, y) && !PLAYERINFO(x,y)->present)
       StorePlayer[x][y] = 0;
+
+    if (ELEM_IS_PLAYER(element))
+      RelocatePlayer(x, y, element);
   }
   else if (phase >= delay && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
   {
+#if 1
+    int graphic = el_act2img(GfxElement[x][y], ACTION_EXPLODING);
+#else
     int stored = Store[x][y];
     int graphic = (game.emulation != EMU_SUPAPLEX ? IMG_EXPLOSION :
 		   stored == EL_SP_INFOTRON ? IMG_SP_EXPLOSION_INFOTRON :
 		   IMG_SP_EXPLOSION);
+#endif
     int frame = getGraphicAnimationFrame(graphic, phase - delay);
 
     if (phase == delay)
-      DrawCrumbledSand(SCREENX(x), SCREENY(y));
+      DrawLevelFieldCrumbledSand(x, y);
 
-    if (IS_PFORTE(Store[x][y]))
+    if (IS_WALKABLE_OVER(Back[x][y]) && Back[x][y] != EL_EMPTY)
     {
-      DrawLevelElement(x, y, Store[x][y]);
+      DrawLevelElement(x, y, Back[x][y]);
       DrawGraphicThruMask(SCREENX(x), SCREENY(y), graphic, frame);
     }
-    else
+    else if (IS_WALKABLE_UNDER(Back[x][y]))
+    {
+      DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+      DrawLevelElementThruMask(x, y, Back[x][y]);
+    }
+    else if (!IS_WALKABLE_INSIDE(Back[x][y]))
       DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
   }
 }
@@ -1698,7 +2559,7 @@ void DynaExplode(int ex, int ey)
 
   if (IS_ACTIVE_BOMB(Feld[ex][ey]))
   {
-    player = &stored_player[Feld[ex][ey] - EL_DYNABOMB_PLAYER1_ACTIVE];
+    player = &stored_player[Feld[ex][ey] - EL_DYNABOMB_PLAYER_1_ACTIVE];
     dynabomb_size = player->dynabomb_size;
     dynabomb_xl = player->dynabomb_xl;
     player->dynabombs_left++;
@@ -1706,15 +2567,15 @@ void DynaExplode(int ex, int ey)
 
   Explode(ex, ey, EX_PHASE_START, EX_CENTER);
 
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
-    for (j=1; j<=dynabomb_size; j++)
+    for (j = 1; j <= dynabomb_size; j++)
     {
       int x = ex + j * xy[i % 4][0];
       int y = ey + j * xy[i % 4][1];
       int element;
 
-      if (!IN_LEV_FIELD(x, y) || IS_MASSIVE(Feld[x][y]))
+      if (!IN_LEV_FIELD(x, y) || IS_INDESTRUCTIBLE(Feld[x][y]))
 	break;
 
       element = Feld[x][y];
@@ -1725,6 +2586,7 @@ void DynaExplode(int ex, int ey)
 
       Explode(x, y, EX_PHASE_START, EX_BORDER);
 
+      /* !!! extend EL_SAND to anything diggable (but maybe not SP_BASE) !!! */
       if (element != EL_EMPTY &&
 	  element != EL_SAND &&
 	  element != EL_EXPLOSION &&
@@ -1736,12 +2598,34 @@ void DynaExplode(int ex, int ey)
 
 void Bang(int x, int y)
 {
+#if 1
+  int element = MovingOrBlocked2Element(x, y);
+#else
   int element = Feld[x][y];
+#endif
+
+#if 1
+  if (IS_PLAYER(x, y) && !PLAYER_PROTECTED(x, y))
+#else
+  if (IS_PLAYER(x, y))
+#endif
+  {
+    struct PlayerInfo *player = PLAYERINFO(x, y);
+
+    element = Feld[x][y] = (player->use_murphy_graphic ? EL_SP_MURPHY :
+			    player->element_nr);
+  }
 
+#if 0
+#if 1
+  PlayLevelSoundAction(x, y, ACTION_EXPLODING);
+#else
   if (game.emulation == EMU_SUPAPLEX)
-    PlaySoundLevel(x, y, SND_SP_ELEMENT_EXPLODING);
+    PlayLevelSound(x, y, SND_SP_ELEMENT_EXPLODING);
   else
-    PlaySoundLevel(x, y, SND_ELEMENT_EXPLODING);
+    PlayLevelSound(x, y, SND_ELEMENT_EXPLODING);
+#endif
+#endif
 
 #if 0
   if (IS_PLAYER(x, y))	/* remove objects that might cause smaller explosion */
@@ -1762,13 +2646,13 @@ void Bang(int x, int y)
       RaiseScoreElement(element);
       Explode(x, y, EX_PHASE_START, EX_NORMAL);
       break;
-    case EL_DYNABOMB_PLAYER1_ACTIVE:
-    case EL_DYNABOMB_PLAYER2_ACTIVE:
-    case EL_DYNABOMB_PLAYER3_ACTIVE:
-    case EL_DYNABOMB_PLAYER4_ACTIVE:
-    case EL_DYNABOMB_NR:
-    case EL_DYNABOMB_SZ:
-    case EL_DYNABOMB_XL:
+    case EL_DYNABOMB_PLAYER_1_ACTIVE:
+    case EL_DYNABOMB_PLAYER_2_ACTIVE:
+    case EL_DYNABOMB_PLAYER_3_ACTIVE:
+    case EL_DYNABOMB_PLAYER_4_ACTIVE:
+    case EL_DYNABOMB_INCREASE_NUMBER:
+    case EL_DYNABOMB_INCREASE_SIZE:
+    case EL_DYNABOMB_INCREASE_POWER:
       DynaExplode(x, y);
       break;
     case EL_PENGUIN:
@@ -1780,9 +2664,14 @@ void Bang(int x, int y)
 	Explode(x, y, EX_PHASE_START, EX_CENTER);
       break;
     default:
-      Explode(x, y, EX_PHASE_START, EX_NORMAL);
+      if (CAN_EXPLODE_1X1(element))
+	Explode(x, y, EX_PHASE_START, EX_CENTER);
+      else
+	Explode(x, y, EX_PHASE_START, EX_NORMAL);
       break;
   }
+
+  CheckTriggeredElementChange(x, y, element, CE_OTHER_IS_EXPLODING);
 }
 
 void SplashAcid(int x, int y)
@@ -1792,7 +2681,7 @@ void SplashAcid(int x, int y)
   if (element != EL_ACID_SPLASH_LEFT &&
       element != EL_ACID_SPLASH_RIGHT)
   {
-    PlaySoundLevel(x, y, SND_ACID_SPLASHING);
+    PlayLevelSound(x, y, SND_ACID_SPLASHING);
 
     if (IN_LEV_FIELD(x-1, y) && IS_FREE(x-1, y) &&
 	(!IN_LEV_FIELD(x-1, y-1) ||
@@ -1804,62 +2693,33 @@ void SplashAcid(int x, int y)
 	 !CAN_FALL(MovingOrBlocked2Element(x+1, y-1))))
       Feld[x+1][y] = EL_ACID_SPLASH_RIGHT;
   }
-
-#if 0
-  else								/* go on */
-  {
-    int graphic = (element == EL_ACID_SPLASH_LEFT ?
-		   IMG_ACID_SPLASH_LEFT :
-		   IMG_ACID_SPLASH_RIGHT);
-
-    if (!MovDelay[x][y])	/* initialize animation counter */
-      MovDelay[x][y] = 9;
-
-    if (MovDelay[x][y])		/* continue animation */
-    {
-      MovDelay[x][y]--;
-      if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(graphic, 8 - MovDelay[x][y]);
-
-        DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
-      }
-
-      if (!MovDelay[x][y])
-      {
-	Feld[x][y] = EL_EMPTY;
-	DrawLevelField(x, y);
-      }
-    }
-  }
-#endif
-}
+}
 
 static void InitBeltMovement()
 {
   static int belt_base_element[4] =
   {
-    EL_CONVEYOR_BELT1_LEFT,
-    EL_CONVEYOR_BELT2_LEFT,
-    EL_CONVEYOR_BELT3_LEFT,
-    EL_CONVEYOR_BELT4_LEFT
+    EL_CONVEYOR_BELT_1_LEFT,
+    EL_CONVEYOR_BELT_2_LEFT,
+    EL_CONVEYOR_BELT_3_LEFT,
+    EL_CONVEYOR_BELT_4_LEFT
   };
   static int belt_base_active_element[4] =
   {
-    EL_CONVEYOR_BELT1_LEFT_ACTIVE,
-    EL_CONVEYOR_BELT2_LEFT_ACTIVE,
-    EL_CONVEYOR_BELT3_LEFT_ACTIVE,
-    EL_CONVEYOR_BELT4_LEFT_ACTIVE
+    EL_CONVEYOR_BELT_1_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_2_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_3_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_4_LEFT_ACTIVE
   };
 
   int x, y, i, j;
 
   /* set frame order for belt animation graphic according to belt direction */
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
     int belt_nr = i;
 
-    for (j=0; j<3; j++)
+    for (j = 0; j < 3; j++)
     {
       int element = belt_base_active_element[belt_nr] + j;
       int graphic = el2img(element);
@@ -1871,13 +2731,13 @@ static void InitBeltMovement()
     }
   }
 
-  for(y=0; y<lev_fieldy; y++)
+  for (y = 0; y < lev_fieldy; y++)
   {
-    for(x=0; x<lev_fieldx; x++)
+    for (x = 0; x < lev_fieldx; x++)
     {
       int element = Feld[x][y];
 
-      for (i=0; i<4; i++)
+      for (i = 0; i < 4; i++)
       {
 	if (IS_BELT(element) && game.belt_dir[i] != MV_NO_MOVING)
 	{
@@ -1900,24 +2760,24 @@ static void ToggleBeltSwitch(int x, int y)
 {
   static int belt_base_element[4] =
   {
-    EL_CONVEYOR_BELT1_LEFT,
-    EL_CONVEYOR_BELT2_LEFT,
-    EL_CONVEYOR_BELT3_LEFT,
-    EL_CONVEYOR_BELT4_LEFT
+    EL_CONVEYOR_BELT_1_LEFT,
+    EL_CONVEYOR_BELT_2_LEFT,
+    EL_CONVEYOR_BELT_3_LEFT,
+    EL_CONVEYOR_BELT_4_LEFT
   };
   static int belt_base_active_element[4] =
   {
-    EL_CONVEYOR_BELT1_LEFT_ACTIVE,
-    EL_CONVEYOR_BELT2_LEFT_ACTIVE,
-    EL_CONVEYOR_BELT3_LEFT_ACTIVE,
-    EL_CONVEYOR_BELT4_LEFT_ACTIVE
+    EL_CONVEYOR_BELT_1_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_2_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_3_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_4_LEFT_ACTIVE
   };
   static int belt_base_switch_element[4] =
   {
-    EL_CONVEYOR_BELT1_SWITCH_LEFT,
-    EL_CONVEYOR_BELT2_SWITCH_LEFT,
-    EL_CONVEYOR_BELT3_SWITCH_LEFT,
-    EL_CONVEYOR_BELT4_SWITCH_LEFT
+    EL_CONVEYOR_BELT_1_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_2_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_3_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_4_SWITCH_LEFT
   };
   static int belt_move_dir[4] =
   {
@@ -1943,7 +2803,7 @@ static void ToggleBeltSwitch(int x, int y)
     belt_dir_nr = 1;
 
   /* set frame order for belt animation graphic according to belt direction */
-  for (i=0; i<3; i++)
+  for (i = 0; i < 3; i++)
   {
     int element = belt_base_active_element[belt_nr] + i;
     int graphic = el2img(element);
@@ -1954,9 +2814,9 @@ static void ToggleBeltSwitch(int x, int y)
       graphic_info[graphic].anim_mode |=  ANIM_REVERSE;
   }
 
-  for (yy=0; yy<lev_fieldy; yy++)
+  for (yy = 0; yy < lev_fieldy; yy++)
   {
-    for (xx=0; xx<lev_fieldx; xx++)
+    for (xx = 0; xx < lev_fieldx; xx++)
     {
       int element = Feld[xx][yy];
 
@@ -2004,9 +2864,9 @@ static void ToggleSwitchgateSwitch(int x, int y)
 
   game.switchgate_pos = !game.switchgate_pos;
 
-  for (yy=0; yy<lev_fieldy; yy++)
+  for (yy = 0; yy < lev_fieldy; yy++)
   {
-    for (xx=0; xx<lev_fieldx; xx++)
+    for (xx = 0; xx < lev_fieldx; xx++)
     {
       int element = Feld[xx][yy];
 
@@ -2020,13 +2880,21 @@ static void ToggleSwitchgateSwitch(int x, int y)
 	       element == EL_SWITCHGATE_OPENING)
       {
 	Feld[xx][yy] = EL_SWITCHGATE_CLOSING;
-	PlaySoundLevel(xx, yy, SND_SWITCHGATE_CLOSING);
+#if 1
+	PlayLevelSoundAction(xx, yy, ACTION_CLOSING);
+#else
+	PlayLevelSound(xx, yy, SND_SWITCHGATE_CLOSING);
+#endif
       }
       else if (element == EL_SWITCHGATE_CLOSED ||
 	       element == EL_SWITCHGATE_CLOSING)
       {
 	Feld[xx][yy] = EL_SWITCHGATE_OPENING;
-	PlaySoundLevel(xx, yy, SND_SWITCHGATE_OPENING);
+#if 1
+	PlayLevelSoundAction(xx, yy, ACTION_OPENING);
+#else
+	PlayLevelSound(xx, yy, SND_SWITCHGATE_OPENING);
+#endif
       }
     }
   }
@@ -2036,23 +2904,25 @@ static int getInvisibleActiveFromInvisibleElement(int element)
 {
   return (element == EL_INVISIBLE_STEELWALL ? EL_INVISIBLE_STEELWALL_ACTIVE :
 	  element == EL_INVISIBLE_WALL      ? EL_INVISIBLE_WALL_ACTIVE :
-	  EL_INVISIBLE_SAND_ACTIVE);
+	  element == EL_INVISIBLE_SAND      ? EL_INVISIBLE_SAND_ACTIVE :
+	  element);
 }
 
 static int getInvisibleFromInvisibleActiveElement(int element)
 {
   return (element == EL_INVISIBLE_STEELWALL_ACTIVE ? EL_INVISIBLE_STEELWALL :
 	  element == EL_INVISIBLE_WALL_ACTIVE      ? EL_INVISIBLE_WALL :
-	  EL_INVISIBLE_SAND);
+	  element == EL_INVISIBLE_SAND_ACTIVE      ? EL_INVISIBLE_SAND :
+	  element);
 }
 
 static void RedrawAllLightSwitchesAndInvisibleElements()
 {
   int x, y;
 
-  for (y=0; y<lev_fieldy; y++)
+  for (y = 0; y < lev_fieldy; y++)
   {
-    for (x=0; x<lev_fieldx; x++)
+    for (x = 0; x < lev_fieldx; x++)
     {
       int element = Feld[x][y];
 
@@ -2107,9 +2977,9 @@ static void ActivateTimegateSwitch(int x, int y)
 
   game.timegate_time_left = level.time_timegate * FRAMES_PER_SECOND;
 
-  for (yy=0; yy<lev_fieldy; yy++)
+  for (yy = 0; yy < lev_fieldy; yy++)
   {
-    for (xx=0; xx<lev_fieldx; xx++)
+    for (xx = 0; xx < lev_fieldx; xx++)
     {
       int element = Feld[xx][yy];
 
@@ -2117,7 +2987,7 @@ static void ActivateTimegateSwitch(int x, int y)
 	  element == EL_TIMEGATE_CLOSING)
       {
 	Feld[xx][yy] = EL_TIMEGATE_OPENING;
-	PlaySoundLevel(xx, yy, SND_TIMEGATE_OPENING);
+	PlayLevelSound(xx, yy, SND_TIMEGATE_OPENING);
       }
 
       /*
@@ -2134,23 +3004,55 @@ static void ActivateTimegateSwitch(int x, int y)
   Feld[x][y] = EL_TIMEGATE_SWITCH_ACTIVE;
 }
 
+inline static int getElementMoveStepsize(int x, int y)
+{
+  int element = Feld[x][y];
+  int direction = MovDir[x][y];
+  int dx = (direction == MV_LEFT ? -1 : direction == MV_RIGHT ? +1 : 0);
+  int dy = (direction == MV_UP   ? -1 : direction == MV_DOWN  ? +1 : 0);
+  int horiz_move = (dx != 0);
+  int sign = (horiz_move ? dx : dy);
+  int step = sign * element_info[element].move_stepsize;
+
+  /* special values for move stepsize for spring and things on conveyor belt */
+  if (horiz_move)
+  {
+    if (CAN_FALL(element) &&
+	y < lev_fieldy - 1 && IS_BELT_ACTIVE(Feld[x][y + 1]))
+      step = sign * MOVE_STEPSIZE_NORMAL / 2;
+    else if (element == EL_SPRING)
+      step = sign * MOVE_STEPSIZE_NORMAL * 2;
+  }
+
+  return step;
+}
+
 void Impact(int x, int y)
 {
   boolean lastline = (y == lev_fieldy-1);
   boolean object_hit = FALSE;
+  boolean impact = (lastline || object_hit);
   int element = Feld[x][y];
-  int smashed = 0;
+  int smashed = EL_UNDEFINED;
 
   if (!lastline)	/* check if element below was hit */
   {
-    if (Feld[x][y+1] == EL_PLAYER_IS_LEAVING)
+    if (Feld[x][y + 1] == EL_PLAYER_IS_LEAVING)
       return;
 
-    object_hit = (!IS_FREE(x, y+1) && (!IS_MOVING(x, y+1) ||
-				      MovDir[x][y+1] != MV_DOWN ||
-				      MovPos[x][y+1] <= TILEY / 2));
+    object_hit = (!IS_FREE(x, y + 1) && (!IS_MOVING(x, y + 1) ||
+					 MovDir[x][y + 1] != MV_DOWN ||
+					 MovPos[x][y + 1] <= TILEY / 2));
+
+    /* do not smash moving elements that left the smashed field in time */
+    if (game.engine_version >= VERSION_IDENT(2,2,0,7) && IS_MOVING(x, y + 1) &&
+	ABS(MovPos[x][y + 1] + getElementMoveStepsize(x, y + 1)) >= TILEX)
+      object_hit = FALSE;
+
     if (object_hit)
-      smashed = MovingOrBlocked2Element(x, y+1);
+      smashed = MovingOrBlocked2Element(x, y + 1);
+
+    impact = (lastline || object_hit);
   }
 
   if (!lastline && smashed == EL_ACID)	/* element falls into acid */
@@ -2159,41 +3061,41 @@ void Impact(int x, int y)
     return;
   }
 
-#if 1
-  if (lastline || object_hit)
+  /* only reset graphic animation if graphic really changes after impact */
+  if (impact &&
+      el_act_dir2img(element, GfxAction[x][y], MV_DOWN) != el2img(element))
   {
-#if 0
-    MovDir[x][y] = 0;
-#endif
     ResetGfxAnimation(x, y);
     DrawLevelField(x, y);
   }
-#endif
 
-  if ((element == EL_BOMB ||
-       element == EL_SP_DISK_ORANGE ||
-       element == EL_DX_SUPABOMB) &&
-      (lastline || object_hit))		/* element is bomb */
+  if (impact && CAN_EXPLODE_IMPACT(element))
   {
     Bang(x, y);
     return;
   }
-  else if (element == EL_PEARL)
+  else if (impact && element == EL_PEARL)
   {
     Feld[x][y] = EL_PEARL_BREAKING;
-    PlaySoundLevel(x, y, SND_PEARL_BREAKING);
+    PlayLevelSound(x, y, SND_PEARL_BREAKING);
+    return;
+  }
+  else if (impact && CheckElementChange(x, y, element, CE_IMPACT))
+  {
+    PlayLevelSoundElementAction(x, y, element, ACTION_IMPACT);
+
     return;
   }
 
-  if (element == EL_AMOEBA_DROP && (lastline || object_hit))
+  if (impact && element == EL_AMOEBA_DROP)
   {
-    if (object_hit && IS_PLAYER(x, y+1))
-      KillHeroUnlessProtected(x, y+1);
+    if (object_hit && IS_PLAYER(x, y + 1))
+      KillHeroUnlessProtected(x, y + 1);
     else if (object_hit && smashed == EL_PENGUIN)
-      Bang(x, y+1);
+      Bang(x, y + 1);
     else
     {
-      Feld[x][y] = EL_AMOEBA_CREATING;
+      Feld[x][y] = EL_AMOEBA_GROWING;
       Store[x][y] = EL_AMOEBA_WET;
 
       ResetRandomAnimationValue(x, y);
@@ -2201,9 +3103,9 @@ void Impact(int x, int y)
     return;
   }
 
-  if (!lastline && object_hit)		/* check which object was hit */
+  if (object_hit)		/* check which object was hit */
   {
-    if (CAN_CHANGE(element) && 
+    if (CAN_PASS_MAGIC_WALL(element) && 
 	(smashed == EL_MAGIC_WALL ||
 	 smashed == EL_BD_MAGIC_WALL))
     {
@@ -2213,32 +3115,38 @@ void Impact(int x, int y)
 	 EL_BD_MAGIC_WALL_ACTIVE);
 
       /* activate magic wall / mill */
-      for (yy=0; yy<lev_fieldy; yy++)
-	for (xx=0; xx<lev_fieldx; xx++)
+      for (yy = 0; yy < lev_fieldy; yy++)
+	for (xx = 0; xx < lev_fieldx; xx++)
 	  if (Feld[xx][yy] == smashed)
 	    Feld[xx][yy] = activated_magic_wall;
 
       game.magic_wall_time_left = level.time_magic_wall * FRAMES_PER_SECOND;
       game.magic_wall_active = TRUE;
 
-      PlaySoundLevel(x, y, (smashed == EL_MAGIC_WALL ?
+      PlayLevelSound(x, y, (smashed == EL_MAGIC_WALL ?
 			    SND_MAGIC_WALL_ACTIVATING :
 			    SND_BD_MAGIC_WALL_ACTIVATING));
     }
 
     if (IS_PLAYER(x, y + 1))
     {
-      KillHeroUnlessProtected(x, y+1);
-      return;
+      if (CAN_SMASH_PLAYER(element))
+      {
+	KillHeroUnlessProtected(x, y + 1);
+	return;
+      }
     }
     else if (smashed == EL_PENGUIN)
     {
-      Bang(x, y + 1);
-      return;
+      if (CAN_SMASH_PLAYER(element))
+      {
+	Bang(x, y + 1);
+	return;
+      }
     }
     else if (element == EL_BD_DIAMOND)
     {
-      if (IS_ENEMY(smashed) && IS_BD_ELEMENT(smashed))
+      if (IS_CLASSIC_ENEMY(smashed) && IS_BD_ELEMENT(smashed))
       {
 	Bang(x, y + 1);
 	return;
@@ -2253,23 +3161,22 @@ void Impact(int x, int y)
       Bang(x, y + 1);
       return;
     }
-    else if (element == EL_ROCK ||
-	     element == EL_SP_ZONK ||
-	     element == EL_BD_ROCK)
+#if 0
+    else if (CAN_SMASH_ENEMIES(element) && IS_CLASSIC_ENEMY(smashed))
+    {
+      Bang(x, y + 1);
+      return;
+    }
+#endif
+    else if (CAN_SMASH_EVERYTHING(element))
     {
-      if (IS_ENEMY(smashed) ||
-	  smashed == EL_BOMB ||
-	  smashed == EL_SP_DISK_ORANGE ||
-	  smashed == EL_DX_SUPABOMB ||
-	  smashed == EL_SATELLITE ||
-	  smashed == EL_PIG ||
-	  smashed == EL_DRAGON ||
-	  smashed == EL_MOLE)
+      if (IS_CLASSIC_ENEMY(smashed) ||
+	  CAN_EXPLODE_SMASHED(smashed))
       {
 	Bang(x, y + 1);
 	return;
       }
-      else if (!IS_MOVING(x, y + 1))
+      else if (!IS_MOVING(x, y + 1) && !IS_BLOCKED(x, y + 1))
       {
 	if (smashed == EL_LAMP ||
 	    smashed == EL_LAMP_ACTIVE)
@@ -2279,89 +3186,106 @@ void Impact(int x, int y)
 	}
 	else if (smashed == EL_NUT)
 	{
-	  Feld[x][y+1] = EL_NUT_CRACKING;
-	  PlaySoundLevel(x, y, SND_NUT_CRACKING);
+	  Feld[x][y + 1] = EL_NUT_BREAKING;
+	  PlayLevelSound(x, y, SND_NUT_BREAKING);
 	  RaiseScoreElement(EL_NUT);
 	  return;
 	}
 	else if (smashed == EL_PEARL)
 	{
-	  Feld[x][y+1] = EL_PEARL_BREAKING;
-	  PlaySoundLevel(x, y, SND_PEARL_BREAKING);
+	  Feld[x][y + 1] = EL_PEARL_BREAKING;
+	  PlayLevelSound(x, y, SND_PEARL_BREAKING);
 	  return;
 	}
 	else if (smashed == EL_DIAMOND)
 	{
-	  Feld[x][y+1] = EL_EMPTY;
-	  PlaySoundLevel(x, y, SND_DIAMOND_BREAKING);
+	  Feld[x][y + 1] = EL_DIAMOND_BREAKING;
+	  PlayLevelSound(x, y, SND_DIAMOND_BREAKING);
 	  return;
 	}
 	else if (IS_BELT_SWITCH(smashed))
 	{
-	  ToggleBeltSwitch(x, y+1);
+	  ToggleBeltSwitch(x, y + 1);
 	}
 	else if (smashed == EL_SWITCHGATE_SWITCH_UP ||
 		 smashed == EL_SWITCHGATE_SWITCH_DOWN)
 	{
-	  ToggleSwitchgateSwitch(x, y+1);
+	  ToggleSwitchgateSwitch(x, y + 1);
 	}
 	else if (smashed == EL_LIGHT_SWITCH ||
 		 smashed == EL_LIGHT_SWITCH_ACTIVE)
 	{
-	  ToggleLightSwitch(x, y+1);
+	  ToggleLightSwitch(x, y + 1);
+	}
+	else
+	{
+	  CheckElementChange(x, y + 1, smashed, CE_SMASHED);
+
+	  CheckTriggeredElementSideChange(x, y + 1, smashed, CH_SIDE_TOP,
+					  CE_OTHER_IS_SWITCHING);
+	  CheckElementSideChange(x, y + 1, smashed, CH_SIDE_TOP,
+				 CE_SWITCHED, -1);
 	}
       }
+      else
+      {
+	CheckElementChange(x, y + 1, smashed, CE_SMASHED);
+      }
     }
   }
 
   /* play sound of magic wall / mill */
   if (!lastline &&
-      (Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE ||
-       Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE))
+      (Feld[x][y + 1] == EL_MAGIC_WALL_ACTIVE ||
+       Feld[x][y + 1] == EL_BD_MAGIC_WALL_ACTIVE))
   {
-    if (Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE)
-      PlaySoundLevel(x, y, SND_MAGIC_WALL_CHANGING);
-    else if (Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE)
-      PlaySoundLevel(x, y, SND_BD_MAGIC_WALL_CHANGING);
+    if (Feld[x][y + 1] == EL_MAGIC_WALL_ACTIVE)
+      PlayLevelSound(x, y, SND_MAGIC_WALL_FILLING);
+    else if (Feld[x][y + 1] == EL_BD_MAGIC_WALL_ACTIVE)
+      PlayLevelSound(x, y, SND_BD_MAGIC_WALL_FILLING);
 
     return;
   }
 
   /* play sound of object that hits the ground */
   if (lastline || object_hit)
-    PlaySoundLevelElementAction(x, y, element, ACTION_IMPACT);
+    PlayLevelSoundElementAction(x, y, element, ACTION_IMPACT);
 }
 
-void TurnRound(int x, int y)
+inline static void TurnRoundExt(int x, int y)
 {
   static struct
   {
     int x, y;
   } move_xy[] =
   {
-    { 0, 0 },
-    {-1, 0 },
-    {+1, 0 },
-    { 0, 0 },
-    { 0, -1 },
-    { 0, 0 }, { 0, 0 }, { 0, 0 },
-    { 0, +1 }
+    {  0,  0 },
+    { -1,  0 },
+    { +1,  0 },
+    {  0,  0 },
+    {  0, -1 },
+    {  0,  0 }, { 0, 0 }, { 0, 0 },
+    {  0, +1 }
   };
   static struct
   {
     int left, right, back;
   } turn[] =
   {
-    { 0,	0,		0 },
+    { 0,	0,		0	 },
     { MV_DOWN,	MV_UP,		MV_RIGHT },
-    { MV_UP,	MV_DOWN,	MV_LEFT },
-    { 0,	0,		0 },
-    { MV_LEFT,	MV_RIGHT,	MV_DOWN },
-    { 0,0,0 },	{ 0,0,0 },	{ 0,0,0 },
-    { MV_RIGHT,	MV_LEFT,	MV_UP }
+    { MV_UP,	MV_DOWN,	MV_LEFT	 },
+    { 0,	0,		0	 },
+    { MV_LEFT,	MV_RIGHT,	MV_DOWN	 },
+    { 0,	0,		0	 },
+    { 0,	0,		0	 },
+    { 0,	0,		0	 },
+    { MV_RIGHT,	MV_LEFT,	MV_UP	 }
   };
 
   int element = Feld[x][y];
+  int move_pattern = element_info[element].move_pattern;
+
   int old_move_dir = MovDir[x][y];
   int left_dir  = turn[old_move_dir].left;
   int right_dir = turn[old_move_dir].right;
@@ -2376,15 +3300,15 @@ void TurnRound(int x, int y)
   int right_x = x + right_dx, right_y = y + right_dy;
   int move_x  = x + move_dx,  move_y  = y + move_dy;
 
+  int xx, yy;
+
   if (element == EL_BUG || element == EL_BD_BUTTERFLY)
   {
     TestIfBadThingTouchesOtherBadThing(x, y);
 
-    if (IN_LEV_FIELD(right_x, right_y) &&
-	IS_FREE(right_x, right_y))
+    if (ENEMY_CAN_ENTER_FIELD(right_x, right_y))
       MovDir[x][y] = right_dir;
-    else if (!IN_LEV_FIELD(move_x, move_y) ||
-	     !IS_FREE(move_x, move_y))
+    else if (!ENEMY_CAN_ENTER_FIELD(move_x, move_y))
       MovDir[x][y] = left_dir;
 
     if (element == EL_BUG && MovDir[x][y] != old_move_dir)
@@ -2397,15 +3321,14 @@ void TurnRound(int x, int y)
   {
     TestIfBadThingTouchesOtherBadThing(x, y);
 
-    if (IN_LEV_FIELD(left_x, left_y) &&
-	IS_FREE(left_x, left_y))
+    if (ENEMY_CAN_ENTER_FIELD(left_x, left_y))
       MovDir[x][y] = left_dir;
-    else if (!IN_LEV_FIELD(move_x, move_y) ||
-	     !IS_FREE(move_x, move_y))
+    else if (!ENEMY_CAN_ENTER_FIELD(move_x, move_y))
       MovDir[x][y] = right_dir;
 
     if ((element == EL_SPACESHIP ||
-	 element == EL_SP_SNIKSNAK || element == EL_SP_ELECTRON)
+	 element == EL_SP_SNIKSNAK ||
+	 element == EL_SP_ELECTRON)
 	&& MovDir[x][y] != old_move_dir)
       MovDelay[x][y] = 9;
     else if (element == EL_BD_FIREFLY)	    /* && MovDir[x][y] == right_dir) */
@@ -2413,16 +3336,8 @@ void TurnRound(int x, int y)
   }
   else if (element == EL_YAMYAM)
   {
-    boolean can_turn_left = FALSE, can_turn_right = FALSE;
-
-    if (IN_LEV_FIELD(left_x, left_y) &&
-	(IS_FREE_OR_PLAYER(left_x, left_y) ||
-	 Feld[left_x][left_y] == EL_DIAMOND))
-      can_turn_left = TRUE;
-    if (IN_LEV_FIELD(right_x, right_y) &&
-	(IS_FREE_OR_PLAYER(right_x, right_y) ||
-	 Feld[right_x][right_y] == EL_DIAMOND))
-      can_turn_right = TRUE;
+    boolean can_turn_left  = YAMYAM_CAN_ENTER_FIELD(left_x, left_y);
+    boolean can_turn_right = YAMYAM_CAN_ENTER_FIELD(right_x, right_y);
 
     if (can_turn_left && can_turn_right)
       MovDir[x][y] = (RND(3) ? (RND(2) ? left_dir : right_dir) : back_dir);
@@ -2433,20 +3348,12 @@ void TurnRound(int x, int y)
     else
       MovDir[x][y] = back_dir;
 
-    MovDelay[x][y] = 16+16*RND(3);
+    MovDelay[x][y] = 16 + 16 * RND(3);
   }
   else if (element == EL_DARK_YAMYAM)
   {
-    boolean can_turn_left = FALSE, can_turn_right = FALSE;
-
-    if (IN_LEV_FIELD(left_x, left_y) &&
-	(IS_FREE_OR_PLAYER(left_x, left_y) ||
-	 IS_MAMPF2(Feld[left_x][left_y])))
-      can_turn_left = TRUE;
-    if (IN_LEV_FIELD(right_x, right_y) &&
-	(IS_FREE_OR_PLAYER(right_x, right_y) ||
-	 IS_MAMPF2(Feld[right_x][right_y])))
-      can_turn_right = TRUE;
+    boolean can_turn_left  = DARK_YAMYAM_CAN_ENTER_FIELD(left_x, left_y);
+    boolean can_turn_right = DARK_YAMYAM_CAN_ENTER_FIELD(right_x, right_y);
 
     if (can_turn_left && can_turn_right)
       MovDir[x][y] = (RND(3) ? (RND(2) ? left_dir : right_dir) : back_dir);
@@ -2457,20 +3364,12 @@ void TurnRound(int x, int y)
     else
       MovDir[x][y] = back_dir;
 
-    MovDelay[x][y] = 16+16*RND(3);
+    MovDelay[x][y] = 16 + 16 * RND(3);
   }
   else if (element == EL_PACMAN)
   {
-    boolean can_turn_left = FALSE, can_turn_right = FALSE;
-
-    if (IN_LEV_FIELD(left_x, left_y) &&
-	(IS_FREE_OR_PLAYER(left_x, left_y) ||
-	 IS_AMOEBOID(Feld[left_x][left_y])))
-      can_turn_left = TRUE;
-    if (IN_LEV_FIELD(right_x, right_y) &&
-	(IS_FREE_OR_PLAYER(right_x, right_y) ||
-	 IS_AMOEBOID(Feld[right_x][right_y])))
-      can_turn_right = TRUE;
+    boolean can_turn_left  = PACMAN_CAN_ENTER_FIELD(left_x, left_y);
+    boolean can_turn_right = PACMAN_CAN_ENTER_FIELD(right_x, right_y);
 
     if (can_turn_left && can_turn_right)
       MovDir[x][y] = (RND(3) ? (RND(2) ? left_dir : right_dir) : back_dir);
@@ -2481,56 +3380,45 @@ void TurnRound(int x, int y)
     else
       MovDir[x][y] = back_dir;
 
-    MovDelay[x][y] = 6+RND(40);
+    MovDelay[x][y] = 6 + RND(40);
   }
   else if (element == EL_PIG)
   {
-    boolean can_turn_left = FALSE, can_turn_right = FALSE, can_move_on = FALSE;
-    boolean should_turn_left = FALSE, should_turn_right = FALSE;
-    boolean should_move_on = FALSE;
+    boolean can_turn_left  = PIG_CAN_ENTER_FIELD(left_x, left_y);
+    boolean can_turn_right = PIG_CAN_ENTER_FIELD(right_x, right_y);
+    boolean can_move_on    = PIG_CAN_ENTER_FIELD(move_x, move_y);
+    boolean should_turn_left, should_turn_right, should_move_on;
     int rnd_value = 24;
     int rnd = RND(rnd_value);
 
-    if (IN_LEV_FIELD(left_x, left_y) &&
-	(IS_FREE(left_x, left_y) || IS_GEM(Feld[left_x][left_y])))
-      can_turn_left = TRUE;
-    if (IN_LEV_FIELD(right_x, right_y) &&
-	(IS_FREE(right_x, right_y) || IS_GEM(Feld[right_x][right_y])))
-      can_turn_right = TRUE;
-    if (IN_LEV_FIELD(move_x, move_y) &&
-	(IS_FREE(move_x, move_y) || IS_GEM(Feld[move_x][move_y])))
-      can_move_on = TRUE;
-
-    if (can_turn_left &&
-	(!can_move_on ||
-	 (IN_LEV_FIELD(x+back_dx+left_dx, y+back_dy+left_dy) &&
-	  !IS_FREE(x+back_dx+left_dx, y+back_dy+left_dy))))
-      should_turn_left = TRUE;
-    if (can_turn_right &&
-	(!can_move_on ||
-	 (IN_LEV_FIELD(x+back_dx+right_dx, y+back_dy+right_dy) &&
-	  !IS_FREE(x+back_dx+right_dx, y+back_dy+right_dy))))
-      should_turn_right = TRUE;
-    if (can_move_on &&
-	(!can_turn_left || !can_turn_right ||
-	 (IN_LEV_FIELD(x+move_dx+left_dx, y+move_dy+left_dy) &&
-	  !IS_FREE(x+move_dx+left_dx, y+move_dy+left_dy)) ||
-	 (IN_LEV_FIELD(x+move_dx+right_dx, y+move_dy+right_dy) &&
-	  !IS_FREE(x+move_dx+right_dx, y+move_dy+right_dy))))
-      should_move_on = TRUE;
+    should_turn_left = (can_turn_left &&
+			(!can_move_on ||
+			 IN_LEV_FIELD_AND_NOT_FREE(x + back_dx + left_dx,
+						   y + back_dy + left_dy)));
+    should_turn_right = (can_turn_right &&
+			 (!can_move_on ||
+			  IN_LEV_FIELD_AND_NOT_FREE(x + back_dx + right_dx,
+						    y + back_dy + right_dy)));
+    should_move_on = (can_move_on &&
+		      (!can_turn_left ||
+		       !can_turn_right ||
+		       IN_LEV_FIELD_AND_NOT_FREE(x + move_dx + left_dx,
+						 y + move_dy + left_dy) ||
+		       IN_LEV_FIELD_AND_NOT_FREE(x + move_dx + right_dx,
+						 y + move_dy + right_dy)));
 
     if (should_turn_left || should_turn_right || should_move_on)
     {
       if (should_turn_left && should_turn_right && should_move_on)
-	MovDir[x][y] = (rnd < rnd_value/3 ? left_dir :
-			rnd < 2*rnd_value/3 ? right_dir :
+	MovDir[x][y] = (rnd < rnd_value / 3     ? left_dir :
+			rnd < 2 * rnd_value / 3 ? right_dir :
 			old_move_dir);
       else if (should_turn_left && should_turn_right)
-	MovDir[x][y] = (rnd < rnd_value/2 ? left_dir : right_dir);
+	MovDir[x][y] = (rnd < rnd_value / 2 ? left_dir : right_dir);
       else if (should_turn_left && should_move_on)
-	MovDir[x][y] = (rnd < rnd_value/2 ? left_dir : old_move_dir);
+	MovDir[x][y] = (rnd < rnd_value / 2 ? left_dir : old_move_dir);
       else if (should_turn_right && should_move_on)
-	MovDir[x][y] = (rnd < rnd_value/2 ? right_dir : old_move_dir);
+	MovDir[x][y] = (rnd < rnd_value / 2 ? right_dir : old_move_dir);
       else if (should_turn_left)
 	MovDir[x][y] = left_dir;
       else if (should_turn_right)
@@ -2538,69 +3426,89 @@ void TurnRound(int x, int y)
       else if (should_move_on)
 	MovDir[x][y] = old_move_dir;
     }
-    else if (can_move_on && rnd > rnd_value/8)
+    else if (can_move_on && rnd > rnd_value / 8)
       MovDir[x][y] = old_move_dir;
     else if (can_turn_left && can_turn_right)
-      MovDir[x][y] = (rnd < rnd_value/2 ? left_dir : right_dir);
-    else if (can_turn_left && rnd > rnd_value/8)
+      MovDir[x][y] = (rnd < rnd_value / 2 ? left_dir : right_dir);
+    else if (can_turn_left && rnd > rnd_value / 8)
       MovDir[x][y] = left_dir;
     else if (can_turn_right && rnd > rnd_value/8)
       MovDir[x][y] = right_dir;
     else
       MovDir[x][y] = back_dir;
 
-    if (!IS_FREE(x+move_xy[MovDir[x][y]].x, y+move_xy[MovDir[x][y]].y) &&
-	!IS_GEM(Feld[x+move_xy[MovDir[x][y]].x][y+move_xy[MovDir[x][y]].y]))
+    xx = x + move_xy[MovDir[x][y]].x;
+    yy = y + move_xy[MovDir[x][y]].y;
+
+    if (!IS_FREE(xx, yy) && !IS_FOOD_PIG(Feld[xx][yy]))
       MovDir[x][y] = old_move_dir;
 
     MovDelay[x][y] = 0;
   }
   else if (element == EL_DRAGON)
   {
-    boolean can_turn_left = FALSE, can_turn_right = FALSE, can_move_on = FALSE;
+    boolean can_turn_left  = IN_LEV_FIELD_AND_IS_FREE(left_x, left_y);
+    boolean can_turn_right = IN_LEV_FIELD_AND_IS_FREE(right_x, right_y);
+    boolean can_move_on    = IN_LEV_FIELD_AND_IS_FREE(move_x, move_y);
     int rnd_value = 24;
     int rnd = RND(rnd_value);
 
-    if (IN_LEV_FIELD(left_x, left_y) && IS_FREE(left_x, left_y))
-      can_turn_left = TRUE;
-    if (IN_LEV_FIELD(right_x, right_y) && IS_FREE(right_x, right_y))
-      can_turn_right = TRUE;
-    if (IN_LEV_FIELD(move_x, move_y) && IS_FREE(move_x, move_y))
-      can_move_on = TRUE;
+#if 0
+    if (FrameCounter < 1 && x == 0 && y == 29)
+      printf(":2: %d/%d: %d [%d]\n", x, y, MovDir[x][y], FrameCounter);
+#endif
 
-    if (can_move_on && rnd > rnd_value/8)
+    if (can_move_on && rnd > rnd_value / 8)
       MovDir[x][y] = old_move_dir;
     else if (can_turn_left && can_turn_right)
-      MovDir[x][y] = (rnd < rnd_value/2 ? left_dir : right_dir);
-    else if (can_turn_left && rnd > rnd_value/8)
+      MovDir[x][y] = (rnd < rnd_value / 2 ? left_dir : right_dir);
+    else if (can_turn_left && rnd > rnd_value / 8)
       MovDir[x][y] = left_dir;
-    else if (can_turn_right && rnd > rnd_value/8)
+    else if (can_turn_right && rnd > rnd_value / 8)
       MovDir[x][y] = right_dir;
     else
       MovDir[x][y] = back_dir;
 
-    if (!IS_FREE(x+move_xy[MovDir[x][y]].x, y+move_xy[MovDir[x][y]].y))
+    xx = x + move_xy[MovDir[x][y]].x;
+    yy = y + move_xy[MovDir[x][y]].y;
+
+#if 0
+    if (FrameCounter < 1 && x == 0 && y == 29)
+      printf(":3: %d/%d: %d (%d/%d: %d) [%d]\n", x, y, MovDir[x][y],
+	     xx, yy, Feld[xx][yy],
+	     FrameCounter);
+#endif
+
+#if 1
+    if (!IN_LEV_FIELD_AND_IS_FREE(xx, yy))
       MovDir[x][y] = old_move_dir;
+#else
+    if (!IS_FREE(xx, yy))
+      MovDir[x][y] = old_move_dir;
+#endif
+
+#if 0
+    if (FrameCounter < 1 && x == 0 && y == 29)
+      printf(":4: %d/%d: %d [%d]\n", x, y, MovDir[x][y], FrameCounter);
+#endif
 
     MovDelay[x][y] = 0;
   }
   else if (element == EL_MOLE)
   {
-    boolean can_turn_left = FALSE, can_turn_right = FALSE, can_move_on = FALSE;
-
-    if (IN_LEV_FIELD(move_x, move_y) &&
-	(IS_FREE(move_x, move_y) || IS_AMOEBOID(Feld[move_x][move_y]) ||
-	 Feld[move_x][move_y] == EL_AMOEBA_SHRINKING))
-      can_move_on = TRUE;
-
+    boolean can_move_on =
+      (MOLE_CAN_ENTER_FIELD(move_x, move_y,
+			    IS_AMOEBOID(Feld[move_x][move_y]) ||
+			    Feld[move_x][move_y] == EL_AMOEBA_SHRINKING));
     if (!can_move_on)
     {
-      if (IN_LEV_FIELD(left_x, left_y) &&
-	  (IS_FREE(left_x, left_y) || IS_AMOEBOID(Feld[left_x][left_y])))
-	can_turn_left = TRUE;
-      if (IN_LEV_FIELD(right_x, right_y) &&
-	  (IS_FREE(right_x, right_y) || IS_AMOEBOID(Feld[right_x][right_y])))
-	can_turn_right = TRUE;
+      boolean can_turn_left =
+	(MOLE_CAN_ENTER_FIELD(left_x, left_y,
+			      IS_AMOEBOID(Feld[left_x][left_y])));
+
+      boolean can_turn_right =
+	(MOLE_CAN_ENTER_FIELD(right_x, right_y,
+			      IS_AMOEBOID(Feld[right_x][right_y])));
 
       if (can_turn_left && can_turn_right)
 	MovDir[x][y] = (RND(2) ? left_dir : right_dir);
@@ -2620,9 +3528,9 @@ void TurnRound(int x, int y)
   }
   else if (element == EL_SPRING)
   {
-    if ((MovDir[x][y] == MV_LEFT || MovDir[x][y] == MV_RIGHT) &&
-	(!IN_LEV_FIELD(move_x, move_y) || !IS_FREE(move_x, move_y) ||
-	 (IN_LEV_FIELD(x, y + 1) && IS_FREE(x, y + 1))))
+    if (MovDir[x][y] & MV_HORIZONTAL &&
+	(!IN_LEV_FIELD_AND_IS_FREE(move_x, move_y) ||
+	 IN_LEV_FIELD_AND_IS_FREE(x, y + 1)))
       MovDir[x][y] = MV_NO_MOVING;
 
     MovDelay[x][y] = 0;
@@ -2642,7 +3550,7 @@ void TurnRound(int x, int y)
     {
       int i;
 
-      for (i=0; i<MAX_PLAYERS; i++)
+      for (i = 0; i < MAX_PLAYERS; i++)
       {
 	struct PlayerInfo *player = &stored_player[i];
 	int jx = player->jx, jy = player->jy;
@@ -2650,7 +3558,8 @@ void TurnRound(int x, int y)
 	if (!player->active)
 	  continue;
 
-	if (attr_x == -1 || ABS(jx-x)+ABS(jy-y) < ABS(attr_x-x)+ABS(attr_y-y))
+	if (attr_x == -1 ||
+	    ABS(jx - x) + ABS(jy - y) < ABS(attr_x - x) + ABS(attr_y - y))
 	{
 	  attr_x = jx;
 	  attr_y = jy;
@@ -2675,10 +3584,10 @@ void TurnRound(int x, int y)
 	{ 0, +1 }
       };
 
-      for (i=0; i<4; i++)
+      for (i = 0; i < 4; i++)
       {
-    	int ex = x + xy[i%4][0];
-    	int ey = y + xy[i%4][1];
+    	int ex = x + xy[i % 4][0];
+    	int ey = y + xy[i % 4][1];
 
     	if (IN_LEV_FIELD(ex, ey) && Feld[ex][ey] == EL_EXIT_OPEN)
 	{
@@ -2690,61 +3599,80 @@ void TurnRound(int x, int y)
     }
 
     MovDir[x][y] = MV_NO_MOVING;
-    if (attr_x<x)
+    if (attr_x < x)
       MovDir[x][y] |= (AllPlayersGone ? MV_RIGHT : MV_LEFT);
-    else if (attr_x>x)
+    else if (attr_x > x)
       MovDir[x][y] |= (AllPlayersGone ? MV_LEFT : MV_RIGHT);
-    if (attr_y<y)
+    if (attr_y < y)
       MovDir[x][y] |= (AllPlayersGone ? MV_DOWN : MV_UP);
-    else if (attr_y>y)
+    else if (attr_y > y)
       MovDir[x][y] |= (AllPlayersGone ? MV_UP : MV_DOWN);
 
     if (element == EL_ROBOT)
     {
       int newx, newy;
 
-      if ((MovDir[x][y]&(MV_LEFT|MV_RIGHT)) && (MovDir[x][y]&(MV_UP|MV_DOWN)))
-	MovDir[x][y] &= (RND(2) ? (MV_LEFT|MV_RIGHT) : (MV_UP|MV_DOWN));
+      if (MovDir[x][y] & MV_HORIZONTAL && MovDir[x][y] & MV_VERTICAL)
+	MovDir[x][y] &= (RND(2) ? MV_HORIZONTAL : MV_VERTICAL);
       Moving2Blocked(x, y, &newx, &newy);
 
       if (IN_LEV_FIELD(newx, newy) && IS_FREE_OR_PLAYER(newx, newy))
-	MovDelay[x][y] = 8+8*!RND(3);
+	MovDelay[x][y] = 8 + 8 * !RND(3);
       else
 	MovDelay[x][y] = 16;
     }
-    else
+    else if (element == EL_PENGUIN)
+    {
+      int newx, newy;
+
+      MovDelay[x][y] = 1;
+
+      if (MovDir[x][y] & MV_HORIZONTAL && MovDir[x][y] & MV_VERTICAL)
+      {
+	boolean first_horiz = RND(2);
+	int new_move_dir = MovDir[x][y];
+
+	MovDir[x][y] =
+	  new_move_dir & (first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+	Moving2Blocked(x, y, &newx, &newy);
+
+	if (PENGUIN_CAN_ENTER_FIELD(newx, newy))
+	  return;
+
+	MovDir[x][y] =
+	  new_move_dir & (!first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+	Moving2Blocked(x, y, &newx, &newy);
+
+	if (PENGUIN_CAN_ENTER_FIELD(newx, newy))
+	  return;
+
+	MovDir[x][y] = old_move_dir;
+	return;
+      }
+    }
+    else	/* (element == EL_SATELLITE) */
     {
       int newx, newy;
 
       MovDelay[x][y] = 1;
 
-      if ((MovDir[x][y]&(MV_LEFT|MV_RIGHT)) && (MovDir[x][y]&(MV_UP|MV_DOWN)))
+      if (MovDir[x][y] & MV_HORIZONTAL && MovDir[x][y] & MV_VERTICAL)
       {
 	boolean first_horiz = RND(2);
 	int new_move_dir = MovDir[x][y];
 
 	MovDir[x][y] =
-	  new_move_dir & (first_horiz ? (MV_LEFT|MV_RIGHT) : (MV_UP|MV_DOWN));
+	  new_move_dir & (first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
 	Moving2Blocked(x, y, &newx, &newy);
 
-	if (IN_LEV_FIELD(newx, newy) &&
-	    (IS_FREE(newx, newy) ||
-	     Feld[newx][newy] == EL_ACID ||
-	     (element == EL_PENGUIN &&
-	      (Feld[newx][newy] == EL_EXIT_OPEN ||
-	       IS_MAMPF3(Feld[newx][newy])))))
+	if (ELEMENT_CAN_ENTER_FIELD_OR_ACID_2(newx, newy))
 	  return;
 
 	MovDir[x][y] =
-	  new_move_dir & (!first_horiz ? (MV_LEFT|MV_RIGHT) : (MV_UP|MV_DOWN));
+	  new_move_dir & (!first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
 	Moving2Blocked(x, y, &newx, &newy);
 
-	if (IN_LEV_FIELD(newx, newy) &&
-	    (IS_FREE(newx, newy) ||
-	     Feld[newx][newy] == EL_ACID ||
-	     (element == EL_PENGUIN &&
-	      (Feld[newx][newy] == EL_EXIT_OPEN ||
-	       IS_MAMPF3(Feld[newx][newy])))))
+	if (ELEMENT_CAN_ENTER_FIELD_OR_ACID_2(newx, newy))
 	  return;
 
 	MovDir[x][y] = old_move_dir;
@@ -2752,17 +3680,247 @@ void TurnRound(int x, int y)
       }
     }
   }
+  else if (move_pattern == MV_ALL_DIRECTIONS ||
+	   move_pattern == MV_TURNING_LEFT ||
+	   move_pattern == MV_TURNING_RIGHT)
+  {
+    boolean can_turn_left  = ELEMENT_CAN_ENTER_FIELD(element, left_x, left_y);
+    boolean can_turn_right = ELEMENT_CAN_ENTER_FIELD(element, right_x,right_y);
+
+    if (move_pattern == MV_TURNING_LEFT)
+      MovDir[x][y] = left_dir;
+    else if (move_pattern == MV_TURNING_RIGHT)
+      MovDir[x][y] = right_dir;
+    else if (can_turn_left && can_turn_right)
+      MovDir[x][y] = (RND(3) ? (RND(2) ? left_dir : right_dir) : back_dir);
+    else if (can_turn_left)
+      MovDir[x][y] = (RND(2) ? left_dir : back_dir);
+    else if (can_turn_right)
+      MovDir[x][y] = (RND(2) ? right_dir : back_dir);
+    else
+      MovDir[x][y] = back_dir;
+
+    MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+  }
+  else if (move_pattern == MV_HORIZONTAL ||
+	   move_pattern == MV_VERTICAL)
+  {
+    if (move_pattern & old_move_dir)
+      MovDir[x][y] = back_dir;
+    else if (move_pattern == MV_HORIZONTAL)
+      MovDir[x][y] = (RND(2) ? MV_LEFT : MV_RIGHT);
+    else if (move_pattern == MV_VERTICAL)
+      MovDir[x][y] = (RND(2) ? MV_UP : MV_DOWN);
+
+    MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+  }
+  else if (move_pattern & MV_ANY_DIRECTION)
+  {
+    MovDir[x][y] = move_pattern;
+    MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+  }
+  else if (move_pattern == MV_ALONG_LEFT_SIDE)
+  {
+    if (ELEMENT_CAN_ENTER_FIELD(element, left_x, left_y))
+      MovDir[x][y] = left_dir;
+    else if (!ELEMENT_CAN_ENTER_FIELD(element, move_x, move_y))
+      MovDir[x][y] = right_dir;
+
+    if (MovDir[x][y] != old_move_dir)
+      MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+  }
+  else if (move_pattern == MV_ALONG_RIGHT_SIDE)
+  {
+    if (ELEMENT_CAN_ENTER_FIELD(element, right_x, right_y))
+      MovDir[x][y] = right_dir;
+    else if (!ELEMENT_CAN_ENTER_FIELD(element, move_x, move_y))
+      MovDir[x][y] = left_dir;
+
+    if (MovDir[x][y] != old_move_dir)
+      MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+  }
+  else if (move_pattern == MV_TOWARDS_PLAYER ||
+	   move_pattern == MV_AWAY_FROM_PLAYER)
+  {
+    int attr_x = -1, attr_y = -1;
+    int newx, newy;
+    boolean move_away = (move_pattern == MV_AWAY_FROM_PLAYER);
+
+    if (AllPlayersGone)
+    {
+      attr_x = ExitX;
+      attr_y = ExitY;
+    }
+    else
+    {
+      int i;
+
+      for (i = 0; i < MAX_PLAYERS; i++)
+      {
+	struct PlayerInfo *player = &stored_player[i];
+	int jx = player->jx, jy = player->jy;
+
+	if (!player->active)
+	  continue;
+
+	if (attr_x == -1 ||
+	    ABS(jx - x) + ABS(jy - y) < ABS(attr_x - x) + ABS(attr_y - y))
+	{
+	  attr_x = jx;
+	  attr_y = jy;
+	}
+      }
+    }
+
+    MovDir[x][y] = MV_NO_MOVING;
+    if (attr_x < x)
+      MovDir[x][y] |= (move_away ? MV_RIGHT : MV_LEFT);
+    else if (attr_x > x)
+      MovDir[x][y] |= (move_away ? MV_LEFT : MV_RIGHT);
+    if (attr_y < y)
+      MovDir[x][y] |= (move_away ? MV_DOWN : MV_UP);
+    else if (attr_y > y)
+      MovDir[x][y] |= (move_away ? MV_UP : MV_DOWN);
+
+    MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+
+    if (MovDir[x][y] & MV_HORIZONTAL && MovDir[x][y] & MV_VERTICAL)
+    {
+      boolean first_horiz = RND(2);
+      int new_move_dir = MovDir[x][y];
+
+      MovDir[x][y] =
+	new_move_dir & (first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+      Moving2Blocked(x, y, &newx, &newy);
+
+      if (ELEMENT_CAN_ENTER_FIELD_OR_ACID(element, newx, newy))
+	return;
+
+      MovDir[x][y] =
+	new_move_dir & (!first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+      Moving2Blocked(x, y, &newx, &newy);
+
+      if (ELEMENT_CAN_ENTER_FIELD_OR_ACID(element, newx, newy))
+	return;
+
+      MovDir[x][y] = old_move_dir;
+    }
+  }
+  else if (move_pattern == MV_WHEN_PUSHED)
+  {
+    if (!IN_LEV_FIELD_AND_IS_FREE(move_x, move_y))
+      MovDir[x][y] = MV_NO_MOVING;
+
+    MovDelay[x][y] = 0;
+  }
+  else if (move_pattern & MV_MAZE_RUNNER_STYLE ||
+	   element == EL_MAZE_RUNNER)
+  {
+    static int test_xy[7][2] =
+    {
+      { 0, -1 },
+      { -1, 0 },
+      { +1, 0 },
+      { 0, +1 },
+      { 0, -1 },
+      { -1, 0 },
+      { +1, 0 },
+    };
+    static int test_dir[7] =
+    {
+      MV_UP,
+      MV_LEFT,
+      MV_RIGHT,
+      MV_DOWN,
+      MV_UP,
+      MV_LEFT,
+      MV_RIGHT,
+    };
+    boolean hunter_mode = (move_pattern == MV_MAZE_HUNTER);
+    int move_preference = -1000000;	/* start with very low preference */
+    int new_move_dir = MV_NO_MOVING;
+    int start_test = RND(4);
+    int i;
+
+    for (i = 0; i < 4; i++)
+    {
+      int move_dir = test_dir[start_test + i];
+      int move_dir_preference;
+
+      xx = x + test_xy[start_test + i][0];
+      yy = y + test_xy[start_test + i][1];
+
+      if (hunter_mode && IN_LEV_FIELD(xx, yy) &&
+	  (IS_PLAYER(xx, yy) || Feld[xx][yy] == EL_PLAYER_IS_LEAVING))
+      {
+	new_move_dir = move_dir;
+
+	break;
+      }
+
+      if (!MAZE_RUNNER_CAN_ENTER_FIELD(xx, yy))
+	continue;
+
+      move_dir_preference = -1 * RunnerVisit[xx][yy];
+      if (hunter_mode && PlayerVisit[xx][yy] > 0)
+	move_dir_preference = PlayerVisit[xx][yy];
+
+      if (move_dir_preference > move_preference)
+      {
+	/* prefer field that has not been visited for the longest time */
+	move_preference = move_dir_preference;
+	new_move_dir = move_dir;
+      }
+      else if (move_dir_preference == move_preference &&
+	       move_dir == old_move_dir)
+      {
+	/* prefer last direction when all directions are preferred equally */
+	move_preference = move_dir_preference;
+	new_move_dir = move_dir;
+      }
+    }
+
+    MovDir[x][y] = new_move_dir;
+    if (old_move_dir != new_move_dir)
+      MovDelay[x][y] = 9;
+  }
+}
+
+static void TurnRound(int x, int y)
+{
+  int direction = MovDir[x][y];
+
+#if 0
+  GfxDir[x][y] = MovDir[x][y];
+#endif
+
+  TurnRoundExt(x, y);
+
+#if 1
+  GfxDir[x][y] = MovDir[x][y];
+#endif
+
+  if (direction != MovDir[x][y])
+    GfxFrame[x][y] = 0;
+
+#if 1
+  if (MovDelay[x][y])
+    GfxAction[x][y] = ACTION_TURNING_FROM_LEFT + MV_DIR_BIT(direction);
+#else
+  if (MovDelay[x][y])
+    GfxAction[x][y] = ACTION_WAITING;
+#endif
 }
 
 static boolean JustBeingPushed(int x, int y)
 {
   int i;
 
-  for (i=0; i<MAX_PLAYERS; i++)
+  for (i = 0; i < MAX_PLAYERS; i++)
   {
     struct PlayerInfo *player = &stored_player[i];
 
-    if (player->active && player->Pushing && player->MovPos)
+    if (player->active && player->is_pushing && player->MovPos)
     {
       int next_jx = player->jx + (player->jx - player->last_jx);
       int next_jy = player->jy + (player->jy - player->last_jy);
@@ -2777,33 +3935,45 @@ static boolean JustBeingPushed(int x, int y)
 
 void StartMoving(int x, int y)
 {
-  static boolean use_spring_bug = TRUE;
+  boolean use_spring_bug = (game.engine_version < VERSION_IDENT(2,2,0,0));
   boolean started_moving = FALSE;	/* some elements can fall _and_ move */
   int element = Feld[x][y];
 
   if (Stop[x][y])
     return;
 
-  GfxAction[x][y] = ACTION_DEFAULT;
+#if 1
+  if (MovDelay[x][y] == 0)
+    GfxAction[x][y] = ACTION_DEFAULT;
+#else
+  /* !!! this should be handled more generic (not only for mole) !!! */
+  if (element != EL_MOLE && GfxAction[x][y] != ACTION_DIGGING)
+    GfxAction[x][y] = ACTION_DEFAULT;
+#endif
 
   if (CAN_FALL(element) && y < lev_fieldy - 1)
   {
-    if ((x>0 && IS_PLAYER(x-1, y)) || (x<lev_fieldx-1 && IS_PLAYER(x+1, y)))
+    if ((x > 0 && IS_PLAYER(x - 1, y)) ||
+	(x < lev_fieldx-1 && IS_PLAYER(x + 1, y)))
       if (JustBeingPushed(x, y))
 	return;
 
     if (element == EL_QUICKSAND_FULL)
     {
-      if (IS_FREE(x, y+1))
+      if (IS_FREE(x, y + 1))
       {
 	InitMovingField(x, y, MV_DOWN);
 	started_moving = TRUE;
 
 	Feld[x][y] = EL_QUICKSAND_EMPTYING;
 	Store[x][y] = EL_ROCK;
-	PlaySoundLevel(x, y, SND_QUICKSAND_EMPTYING);
+#if 1
+	PlayLevelSoundAction(x, y, ACTION_EMPTYING);
+#else
+	PlayLevelSound(x, y, SND_QUICKSAND_EMPTYING);
+#endif
       }
-      else if (Feld[x][y+1] == EL_QUICKSAND_EMPTY)
+      else if (Feld[x][y + 1] == EL_QUICKSAND_EMPTY)
       {
 	if (!MovDelay[x][y])
 	  MovDelay[x][y] = TILEY + 1;
@@ -2816,25 +3986,33 @@ void StartMoving(int x, int y)
 	}
 
 	Feld[x][y] = EL_QUICKSAND_EMPTY;
-	Feld[x][y+1] = EL_QUICKSAND_FULL;
-	Store[x][y+1] = Store[x][y];
+	Feld[x][y + 1] = EL_QUICKSAND_FULL;
+	Store[x][y + 1] = Store[x][y];
 	Store[x][y] = 0;
-	PlaySoundLevel(x, y, SND_QUICKSAND_SLIPPING);
+#if 1
+	PlayLevelSoundAction(x, y, ACTION_FILLING);
+#else
+	PlayLevelSound(x, y, SND_QUICKSAND_FILLING);
+#endif
       }
     }
     else if ((element == EL_ROCK || element == EL_BD_ROCK) &&
-	     Feld[x][y+1] == EL_QUICKSAND_EMPTY)
+	     Feld[x][y + 1] == EL_QUICKSAND_EMPTY)
     {
       InitMovingField(x, y, MV_DOWN);
       started_moving = TRUE;
 
       Feld[x][y] = EL_QUICKSAND_FILLING;
       Store[x][y] = element;
-      PlaySoundLevel(x, y, SND_QUICKSAND_FILLING);
+#if 1
+      PlayLevelSoundAction(x, y, ACTION_FILLING);
+#else
+      PlayLevelSound(x, y, SND_QUICKSAND_FILLING);
+#endif
     }
     else if (element == EL_MAGIC_WALL_FULL)
     {
-      if (IS_FREE(x, y+1))
+      if (IS_FREE(x, y + 1))
       {
 	InitMovingField(x, y, MV_DOWN);
 	started_moving = TRUE;
@@ -2842,7 +4020,7 @@ void StartMoving(int x, int y)
 	Feld[x][y] = EL_MAGIC_WALL_EMPTYING;
 	Store[x][y] = EL_CHANGED(Store[x][y]);
       }
-      else if (Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE)
+      else if (Feld[x][y + 1] == EL_MAGIC_WALL_ACTIVE)
       {
 	if (!MovDelay[x][y])
 	  MovDelay[x][y] = TILEY/4 + 1;
@@ -2855,14 +4033,14 @@ void StartMoving(int x, int y)
 	}
 
 	Feld[x][y] = EL_MAGIC_WALL_ACTIVE;
-	Feld[x][y+1] = EL_MAGIC_WALL_FULL;
-	Store[x][y+1] = EL_CHANGED(Store[x][y]);
+	Feld[x][y + 1] = EL_MAGIC_WALL_FULL;
+	Store[x][y + 1] = EL_CHANGED(Store[x][y]);
 	Store[x][y] = 0;
       }
     }
     else if (element == EL_BD_MAGIC_WALL_FULL)
     {
-      if (IS_FREE(x, y+1))
+      if (IS_FREE(x, y + 1))
       {
 	InitMovingField(x, y, MV_DOWN);
 	started_moving = TRUE;
@@ -2870,7 +4048,7 @@ void StartMoving(int x, int y)
 	Feld[x][y] = EL_BD_MAGIC_WALL_EMPTYING;
 	Store[x][y] = EL_CHANGED2(Store[x][y]);
       }
-      else if (Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE)
+      else if (Feld[x][y + 1] == EL_BD_MAGIC_WALL_ACTIVE)
       {
 	if (!MovDelay[x][y])
 	  MovDelay[x][y] = TILEY/4 + 1;
@@ -2883,27 +4061,27 @@ void StartMoving(int x, int y)
 	}
 
 	Feld[x][y] = EL_BD_MAGIC_WALL_ACTIVE;
-	Feld[x][y+1] = EL_BD_MAGIC_WALL_FULL;
-	Store[x][y+1] = EL_CHANGED2(Store[x][y]);
+	Feld[x][y + 1] = EL_BD_MAGIC_WALL_FULL;
+	Store[x][y + 1] = EL_CHANGED2(Store[x][y]);
 	Store[x][y] = 0;
       }
     }
-    else if (CAN_CHANGE(element) &&
-	     (Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE ||
-	      Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE))
+    else if (CAN_PASS_MAGIC_WALL(element) &&
+	     (Feld[x][y + 1] == EL_MAGIC_WALL_ACTIVE ||
+	      Feld[x][y + 1] == EL_BD_MAGIC_WALL_ACTIVE))
     {
       InitMovingField(x, y, MV_DOWN);
       started_moving = TRUE;
 
       Feld[x][y] =
-	(Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE ? EL_MAGIC_WALL_FILLING :
+	(Feld[x][y + 1] == EL_MAGIC_WALL_ACTIVE ? EL_MAGIC_WALL_FILLING :
 	 EL_BD_MAGIC_WALL_FILLING);
       Store[x][y] = element;
     }
 #if 0
-    else if (CAN_SMASH(element) && Feld[x][y+1] == EL_ACID)
+    else if (CAN_SMASH(element) && Feld[x][y + 1] == EL_ACID)
 #else
-    else if (CAN_FALL(element) && Feld[x][y+1] == EL_ACID)
+    else if (CAN_FALL(element) && Feld[x][y + 1] == EL_ACID)
 #endif
     {
       SplashAcid(x, y);
@@ -2912,13 +4090,44 @@ void StartMoving(int x, int y)
       started_moving = TRUE;
 
       Store[x][y] = EL_ACID;
+#if 0
+      /* !!! TEST !!! better use "_FALLING" etc. !!! */
+      GfxAction[x][y + 1] = ACTION_ACTIVE;
+#endif
     }
-    else if (CAN_SMASH(element) && Feld[x][y+1] == EL_BLOCKED &&
-	     JustStopped[x][y])
+#if 1
+    else if ((game.engine_version < VERSION_IDENT(2,2,0,7) &&
+	      CAN_SMASH(element) && WasJustMoving[x][y] && !Pushed[x][y + 1] &&
+	      (Feld[x][y + 1] == EL_BLOCKED)) ||
+	     (game.engine_version >= VERSION_IDENT(3,0,7,0) &&
+	      CAN_SMASH(element) && WasJustFalling[x][y] &&
+	      (Feld[x][y + 1] == EL_BLOCKED || IS_PLAYER(x, y + 1))))
+
+#else
+#if 1
+    else if (game.engine_version < VERSION_IDENT(2,2,0,7) &&
+	     CAN_SMASH(element) && Feld[x][y + 1] == EL_BLOCKED &&
+	     WasJustMoving[x][y] && !Pushed[x][y + 1])
+#else
+    else if (CAN_SMASH(element) && Feld[x][y + 1] == EL_BLOCKED &&
+	     WasJustMoving[x][y])
+#endif
+#endif
+
     {
+      /* this is needed for a special case not covered by calling "Impact()"
+	 from "ContinueMoving()": if an element moves to a tile directly below
+	 another element which was just falling on that tile (which was empty
+	 in the previous frame), the falling element above would just stop
+	 instead of smashing the element below (in previous version, the above
+	 element was just checked for "moving" instead of "falling", resulting
+	 in incorrect smashes caused by horizontal movement of the above
+	 element; also, the case of the player being the element to smash was
+	 simply not covered here... :-/ ) */
+
       Impact(x, y);
     }
-    else if (IS_FREE(x, y+1) && element == EL_SPRING && use_spring_bug)
+    else if (IS_FREE(x, y + 1) && element == EL_SPRING && use_spring_bug)
     {
       if (MovDir[x][y] == MV_NO_MOVING)
       {
@@ -2926,9 +4135,9 @@ void StartMoving(int x, int y)
 	started_moving = TRUE;
       }
     }
-    else if (IS_FREE(x, y+1))
+    else if (IS_FREE(x, y + 1) || Feld[x][y + 1] == EL_DIAMOND_BREAKING)
     {
-      if (JustStopped[x][y])	/* prevent animation from being restarted */
+      if (WasJustFalling[x][y])	/* prevent animation from being restarted */
 	MovDir[x][y] = MV_DOWN;
 
       InitMovingField(x, y, MV_DOWN);
@@ -2936,48 +4145,69 @@ void StartMoving(int x, int y)
     }
     else if (element == EL_AMOEBA_DROP)
     {
-      Feld[x][y] = EL_AMOEBA_CREATING;
+      Feld[x][y] = EL_AMOEBA_GROWING;
       Store[x][y] = EL_AMOEBA_WET;
     }
-    /* Store[x][y+1] must be zero, because:
-       (EL_QUICKSAND_FULL -> EL_ROCK): Store[x][y+1] == EL_QUICKSAND_EMPTY
+    /* Store[x][y + 1] must be zero, because:
+       (EL_QUICKSAND_FULL -> EL_ROCK): Store[x][y + 1] == EL_QUICKSAND_EMPTY
     */
 #if 0
 #if OLD_GAME_BEHAVIOUR
-    else if (IS_SLIPPERY(Feld[x][y+1]) && !Store[x][y+1])
+    else if (IS_SLIPPERY(Feld[x][y + 1]) && !Store[x][y + 1])
 #else
-    else if (IS_SLIPPERY(Feld[x][y+1]) && !Store[x][y+1] &&
-	     !IS_FALLING(x, y+1) && !JustStopped[x][y+1] &&
+    else if (IS_SLIPPERY(Feld[x][y + 1]) && !Store[x][y + 1] &&
+	     !IS_FALLING(x, y + 1) && !WasJustMoving[x][y + 1] &&
 	     element != EL_DX_SUPABOMB)
 #endif
 #else
-    else if ((IS_SLIPPERY(Feld[x][y+1]) ||
-	      (IS_EM_SLIPPERY_WALL(Feld[x][y+1]) && IS_GEM(element))) &&
-	     !IS_FALLING(x, y+1) && !JustStopped[x][y+1] &&
+    else if (((IS_SLIPPERY(Feld[x][y + 1]) && !IS_PLAYER(x, y + 1)) ||
+	      (IS_EM_SLIPPERY_WALL(Feld[x][y + 1]) && IS_GEM(element))) &&
+	     !IS_FALLING(x, y + 1) && !WasJustMoving[x][y + 1] &&
 	     element != EL_DX_SUPABOMB && element != EL_SP_DISK_ORANGE)
 #endif
     {
-      boolean left  = (x>0 && IS_FREE(x-1, y) &&
-		       (IS_FREE(x-1, y+1) || Feld[x-1][y+1] == EL_ACID));
-      boolean right = (x<lev_fieldx-1 && IS_FREE(x+1, y) &&
-		       (IS_FREE(x+1, y+1) || Feld[x+1][y+1] == EL_ACID));
+      boolean can_fall_left  = (x > 0 && IS_FREE(x - 1, y) &&
+				(IS_FREE(x - 1, y + 1) ||
+				 Feld[x - 1][y + 1] == EL_ACID));
+      boolean can_fall_right = (x < lev_fieldx - 1 && IS_FREE(x + 1, y) &&
+				(IS_FREE(x + 1, y + 1) ||
+				 Feld[x + 1][y + 1] == EL_ACID));
+      boolean can_fall_any  = (can_fall_left || can_fall_right);
+      boolean can_fall_both = (can_fall_left && can_fall_right);
 
-      if (left || right)
+      if (can_fall_any && IS_CUSTOM_ELEMENT(Feld[x][y + 1]))
       {
-	if (left && right &&
+	int slippery_type = element_info[Feld[x][y + 1]].slippery_type;
+
+	if (slippery_type == SLIPPERY_ONLY_LEFT)
+	  can_fall_right = FALSE;
+	else if (slippery_type == SLIPPERY_ONLY_RIGHT)
+	  can_fall_left = FALSE;
+	else if (slippery_type == SLIPPERY_ANY_LEFT_RIGHT && can_fall_both)
+	  can_fall_right = FALSE;
+	else if (slippery_type == SLIPPERY_ANY_RIGHT_LEFT && can_fall_both)
+	  can_fall_left = FALSE;
+
+	can_fall_any  = (can_fall_left || can_fall_right);
+	can_fall_both = (can_fall_left && can_fall_right);
+      }
+
+      if (can_fall_any)
+      {
+	if (can_fall_both &&
 	    (game.emulation != EMU_BOULDERDASH &&
 	     element != EL_BD_ROCK && element != EL_BD_DIAMOND))
-	  left = !(right = RND(2));
+	  can_fall_left = !(can_fall_right = RND(2));
 
-	InitMovingField(x, y, left ? MV_LEFT : MV_RIGHT);
+	InitMovingField(x, y, can_fall_left ? MV_LEFT : MV_RIGHT);
 	started_moving = TRUE;
       }
     }
-    else if (IS_BELT_ACTIVE(Feld[x][y+1]))
+    else if (IS_BELT_ACTIVE(Feld[x][y + 1]))
     {
-      boolean left_is_free  = (x>0 && IS_FREE(x-1, y));
-      boolean right_is_free = (x<lev_fieldx-1 && IS_FREE(x+1, y));
-      int belt_nr = getBeltNrFromBeltActiveElement(Feld[x][y+1]);
+      boolean left_is_free  = (x > 0 && IS_FREE(x - 1, y));
+      boolean right_is_free = (x < lev_fieldx - 1 && IS_FREE(x + 1, y));
+      int belt_nr = getBeltNrFromBeltActiveElement(Feld[x][y + 1]);
       int belt_dir = game.belt_dir[belt_nr];
 
       if ((belt_dir == MV_LEFT  && left_is_free) ||
@@ -2991,16 +4221,22 @@ void StartMoving(int x, int y)
     }
   }
 
-  /* not "else if" because of EL_SPRING */
+  /* not "else if" because of elements that can fall and move (EL_SPRING) */
   if (CAN_MOVE(element) && !started_moving)
   {
+    int move_pattern = element_info[element].move_pattern;
     int newx, newy;
 
+#if 1
+    if (IS_PUSHABLE(element) && JustBeingPushed(x, y))
+      return;
+#else
     if ((element == EL_SATELLITE ||
 	 element == EL_BALLOON ||
 	 element == EL_SPRING)
 	&& JustBeingPushed(x, y))
       return;
+#endif
 
 #if 0
 #if 0
@@ -3016,24 +4252,30 @@ void StartMoving(int x, int y)
 #endif
 #endif
 
+#if 0
+    if (FrameCounter < 1 && x == 0 && y == 29)
+      printf(":1: %d/%d: %d [%d]\n", x, y, MovDir[x][y], FrameCounter);
+#endif
+
     if (!MovDelay[x][y])	/* start new movement phase */
     {
-      /* all objects that can change their move direction after each step */
-      /* (MAMPFER, MAMPFER2 and PACMAN go straight until they hit a wall  */
+      /* all objects that can change their move direction after each step
+	 (YAMYAM, DARK_YAMYAM and PACMAN go straight until they hit a wall */
 
       if (element != EL_YAMYAM &&
 	  element != EL_DARK_YAMYAM &&
-	  element != EL_PACMAN)
+	  element != EL_PACMAN &&
+	  !(move_pattern & MV_ANY_DIRECTION) &&
+	  move_pattern != MV_TURNING_LEFT &&
+	  move_pattern != MV_TURNING_RIGHT)
       {
-#if 0
-  if (element == EL_SPRING)
-    printf("1--> %d\n", MovDir[x][y]);
-#endif
 	TurnRound(x, y);
+
 #if 0
-  if (element == EL_SPRING)
-    printf("2--> %d\n", MovDir[x][y]);
+	if (FrameCounter < 1 && x == 0 && y == 29)
+	  printf(":9: %d: %d [%d]\n", y, MovDir[x][y], FrameCounter);
 #endif
+
 	if (MovDelay[x][y] && (element == EL_BUG ||
 			       element == EL_SPACESHIP ||
 			       element == EL_SP_SNIKSNAK ||
@@ -3047,33 +4289,43 @@ void StartMoving(int x, int y)
     {
       MovDelay[x][y]--;
 
-      if (element == EL_ROBOT ||
-	  element == EL_YAMYAM ||
-	  element == EL_DARK_YAMYAM)
+#if 0
+      if (element == EL_YAMYAM)
       {
-#if 1
-	DrawLevelElementAnimationIfNeeded(x, y, element);
-#else
-	if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-	{
-	  int graphic = el2img(element);
-	  int frame = getGraphicAnimationFrame(graphic, MovDelay[x][y] % 8);
+	printf("::: %d\n",
+	       el_act_dir2img(EL_YAMYAM, ACTION_WAITING, MV_LEFT));
+	DrawLevelElementAnimation(x, y, element);
+      }
+#endif
 
-	  DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
-	}
+      if (MovDelay[x][y])	/* element still has to wait some time */
+      {
+#if 0
+	/* !!! PLACE THIS SOMEWHERE AFTER "TurnRound()" !!! */
+	ResetGfxAnimation(x, y);
 #endif
 
-#if 1
-	PlaySoundLevelAction(x, y, ACTION_WAITING);
+#if 0
+	if (GfxAction[x][y] != ACTION_WAITING)
+	  printf("::: %d: %d != ACTION_WAITING\n", element, GfxAction[x][y]);
+
+	GfxAction[x][y] = ACTION_WAITING;
+#endif
+      }
+
+      if (element == EL_ROBOT ||
+#if 0
+	  element == EL_PACMAN ||
+#endif
+	  element == EL_YAMYAM ||
+	  element == EL_DARK_YAMYAM)
+      {
+#if 0
+	DrawLevelElementAnimation(x, y, element);
 #else
-	if (MovDelay[x][y] % 4 == 3)
-	{
-	  if (element == EL_YAMYAM)
-	    PlaySoundLevel(x, y, SND_YAMYAM_WAITING);
-	  else if (element == EL_DARK_YAMYAM)
-	    PlaySoundLevel(x, y, SND_DARK_YAMYAM_WAITING);
-	}
+	DrawLevelElementAnimationIfNeeded(x, y, element);
 #endif
+	PlayLevelSoundAction(x, y, ACTION_WAITING);
       }
       else if (element == EL_SP_ELECTRON)
 	DrawLevelElementAnimationIfNeeded(x, y, element);
@@ -3083,34 +4335,51 @@ void StartMoving(int x, int y)
 	int dir = MovDir[x][y];
 	int dx = (dir == MV_LEFT ? -1 : dir == MV_RIGHT ? +1 : 0);
 	int dy = (dir == MV_UP   ? -1 : dir == MV_DOWN  ? +1 : 0);
-	int graphic = (dir == MV_LEFT	? IMG_FLAMES1_LEFT :
-		       dir == MV_RIGHT	? IMG_FLAMES1_RIGHT :
-		       dir == MV_UP	? IMG_FLAMES1_UP :
-		       dir == MV_DOWN	? IMG_FLAMES1_DOWN : IMG_EMPTY);
-	int frame = getGraphicAnimationFrame(graphic, -1);
+	int graphic = (dir == MV_LEFT	? IMG_FLAMES_1_LEFT :
+		       dir == MV_RIGHT	? IMG_FLAMES_1_RIGHT :
+		       dir == MV_UP	? IMG_FLAMES_1_UP :
+		       dir == MV_DOWN	? IMG_FLAMES_1_DOWN : IMG_EMPTY);
+	int frame = getGraphicAnimationFrame(graphic, GfxFrame[x][y]);
 
-	for (i=1; i<=3; i++)
+#if 0
+	printf("::: %d, %d\n", GfxAction[x][y], GfxFrame[x][y]);
+#endif
+
+	GfxAction[x][y] = ACTION_ATTACKING;
+
+	if (IS_PLAYER(x, y))
+	  DrawPlayerField(x, y);
+	else
+	  DrawLevelField(x, y);
+
+	PlayLevelSoundActionIfLoop(x, y, ACTION_ATTACKING);
+
+	for (i = 1; i <= 3; i++)
 	{
-	  int xx = x + i*dx, yy = y + i*dy;
-	  int sx = SCREENX(xx), sy = SCREENY(yy);
+	  int xx = x + i * dx;
+	  int yy = y + i * dy;
+	  int sx = SCREENX(xx);
+	  int sy = SCREENY(yy);
 	  int flame_graphic = graphic + (i - 1);
 
-	  if (!IN_LEV_FIELD(xx, yy) ||
-	      IS_SOLID(Feld[xx][yy]) || Feld[xx][yy] == EL_EXPLOSION)
+	  if (!IN_LEV_FIELD(xx, yy) || IS_DRAGONFIRE_PROOF(Feld[xx][yy]))
 	    break;
 
 	  if (MovDelay[x][y])
 	  {
 	    int flamed = MovingOrBlocked2Element(xx, yy);
 
-	    if (IS_ENEMY(flamed) || IS_EXPLOSIVE(flamed))
+	    if (IS_CLASSIC_ENEMY(flamed) || CAN_EXPLODE_BY_FIRE(flamed))
 	      Bang(xx, yy);
 	    else
 	      RemoveMovingField(xx, yy);
 
 	    Feld[xx][yy] = EL_FLAMES;
 	    if (IN_SCR_FIELD(sx, sy))
+	    {
+	      DrawLevelFieldCrumbledSand(xx, yy);
 	      DrawGraphic(sx, sy, flame_graphic, frame);
+	    }
 	  }
 	  else
 	  {
@@ -3123,33 +4392,43 @@ void StartMoving(int x, int y)
 
       if (MovDelay[x][y])	/* element still has to wait some time */
       {
-	PlaySoundLevelAction(x, y, ACTION_WAITING);
+	PlayLevelSoundAction(x, y, ACTION_WAITING);
 
 	return;
       }
+
+#if 0
+      /* special case of "moving" animation of waiting elements (FIX THIS !!!);
+	 for all other elements GfxAction will be set by InitMovingField() */
+      if (element == EL_BD_BUTTERFLY || element == EL_BD_FIREFLY)
+	GfxAction[x][y] = ACTION_MOVING;
+#endif
     }
 
     /* now make next step */
 
     Moving2Blocked(x, y, &newx, &newy);	/* get next screen position */
 
-    if (IS_ENEMY(element) && IS_PLAYER(newx, newy) &&
+    if (DONT_COLLIDE_WITH(element) &&
+	IN_LEV_FIELD(newx, newy) && IS_PLAYER(newx, newy) &&
 	!PLAYER_PROTECTED(newx, newy))
     {
-
 #if 1
       TestIfBadThingRunsIntoHero(x, y, MovDir[x][y]);
       return;
 #else
-      /* enemy got the player */
+      /* player killed by element which is deadly when colliding with */
       MovDir[x][y] = 0;
       KillHero(PLAYERINFO(newx, newy));
       return;
 #endif
 
     }
-    else if ((element == EL_PENGUIN || element == EL_ROBOT ||
-	      element == EL_SATELLITE || element == EL_BALLOON) &&
+    else if ((element == EL_PENGUIN ||
+	      element == EL_ROBOT ||
+	      element == EL_SATELLITE ||
+	      element == EL_BALLOON ||
+	      IS_CUSTOM_ELEMENT(element)) &&
 	     IN_LEV_FIELD(newx, newy) &&
 	     MovDir[x][y] == MV_DOWN && Feld[newx][newy] == EL_ACID)
     {
@@ -3163,7 +4442,7 @@ void StartMoving(int x, int y)
 	Feld[x][y] = EL_EMPTY;
 	DrawLevelField(x, y);
 
-	PlaySoundLevel(newx, newy, SND_PENGUIN_PASSING_EXIT);
+	PlayLevelSound(newx, newy, SND_PENGUIN_PASSING);
 	if (IN_SCR_FIELD(SCREENX(newx), SCREENY(newy)))
 	  DrawGraphicThruMask(SCREENX(newx),SCREENY(newy), el2img(element), 0);
 
@@ -3174,15 +4453,17 @@ void StartMoving(int x, int y)
 
 	return;
       }
-      else if (IS_MAMPF3(Feld[newx][newy]))
+      else if (IS_FOOD_PENGUIN(Feld[newx][newy]))
       {
 	if (DigField(local_player, newx, newy, 0, 0, DF_DIG) == MF_MOVING)
 	  DrawLevelField(newx, newy);
 	else
-	  MovDir[x][y] = MV_NO_MOVING;
+	  GfxDir[x][y] = MovDir[x][y] = MV_NO_MOVING;
       }
       else if (!IS_FREE(newx, newy))
       {
+	GfxAction[x][y] = ACTION_WAITING;
+
 	if (IS_PLAYER(x, y))
 	  DrawPlayerField(x, y);
 	else
@@ -3192,7 +4473,31 @@ void StartMoving(int x, int y)
     }
     else if (element == EL_PIG && IN_LEV_FIELD(newx, newy))
     {
-      if (IS_GEM(Feld[newx][newy]))
+      if (IS_FOOD_PIG(Feld[newx][newy]))
+      {
+	if (IS_MOVING(newx, newy))
+	  RemoveMovingField(newx, newy);
+	else
+	{
+	  Feld[newx][newy] = EL_EMPTY;
+	  DrawLevelField(newx, newy);
+	}
+
+	PlayLevelSound(x, y, SND_PIG_DIGGING);
+      }
+      else if (!IS_FREE(newx, newy))
+      {
+	if (IS_PLAYER(x, y))
+	  DrawPlayerField(x, y);
+	else
+	  DrawLevelField(x, y);
+	return;
+      }
+    }
+    else if ((move_pattern & MV_MAZE_RUNNER_STYLE ||
+	      element == EL_MAZE_RUNNER) && IN_LEV_FIELD(newx, newy))
+    {
+      if (IS_FOOD_DARK_YAMYAM(Feld[newx][newy]))
       {
 	if (IS_MOVING(newx, newy))
 	  RemoveMovingField(newx, newy);
@@ -3202,16 +4507,21 @@ void StartMoving(int x, int y)
 	  DrawLevelField(newx, newy);
 	}
 
-	PlaySoundLevel(x, y, SND_PIG_EATING);
+	PlayLevelSound(x, y, SND_DARK_YAMYAM_DIGGING);
       }
       else if (!IS_FREE(newx, newy))
       {
+#if 0
 	if (IS_PLAYER(x, y))
 	  DrawPlayerField(x, y);
 	else
 	  DrawLevelField(x, y);
+#endif
 	return;
       }
+
+      RunnerVisit[x][y] = FrameCounter;
+      PlayerVisit[x][y] /= 8;		/* expire player visit path */
     }
     else if (element == EL_DRAGON && IN_LEV_FIELD(newx, newy))
     {
@@ -3221,36 +4531,46 @@ void StartMoving(int x, int y)
 	  DrawPlayerField(x, y);
 	else
 	  DrawLevelField(x, y);
+
 	return;
       }
       else
       {
 	boolean wanna_flame = !RND(10);
 	int dx = newx - x, dy = newy - y;
-	int newx1 = newx+1*dx, newy1 = newy+1*dy;
-	int newx2 = newx+2*dx, newy2 = newy+2*dy;
+	int newx1 = newx + 1 * dx, newy1 = newy + 1 * dy;
+	int newx2 = newx + 2 * dx, newy2 = newy + 2 * dy;
 	int element1 = (IN_LEV_FIELD(newx1, newy1) ?
 			MovingOrBlocked2Element(newx1, newy1) : EL_STEELWALL);
 	int element2 = (IN_LEV_FIELD(newx2, newy2) ?
 			MovingOrBlocked2Element(newx2, newy2) : EL_STEELWALL);
 
-	if ((wanna_flame || IS_ENEMY(element1) || IS_ENEMY(element2)) &&
+	if ((wanna_flame ||
+	     IS_CLASSIC_ENEMY(element1) ||
+	     IS_CLASSIC_ENEMY(element2)) &&
 	    element1 != EL_DRAGON && element2 != EL_DRAGON &&
 	    element1 != EL_FLAMES && element2 != EL_FLAMES)
 	{
+#if 1
+	  ResetGfxAnimation(x, y);
+	  GfxAction[x][y] = ACTION_ATTACKING;
+#endif
+
 	  if (IS_PLAYER(x, y))
 	    DrawPlayerField(x, y);
 	  else
 	    DrawLevelField(x, y);
 
-	  PlaySoundLevel(x, y, SND_DRAGON_ATTACKING);
+	  PlayLevelSound(x, y, SND_DRAGON_ATTACKING);
 
 	  MovDelay[x][y] = 50;
+
 	  Feld[newx][newy] = EL_FLAMES;
 	  if (IN_LEV_FIELD(newx1, newy1) && Feld[newx1][newy1] == EL_EMPTY)
 	    Feld[newx1][newy1] = EL_FLAMES;
 	  if (IN_LEV_FIELD(newx2, newy2) && Feld[newx2][newy2] == EL_EMPTY)
 	    Feld[newx2][newy2] = EL_FLAMES;
+
 	  return;
 	}
       }
@@ -3266,10 +4586,10 @@ void StartMoving(int x, int y)
 	DrawLevelField(newx, newy);
       }
 
-      PlaySoundLevel(x, y, SND_YAMYAM_EATING);
+      PlayLevelSound(x, y, SND_YAMYAM_DIGGING);
     }
     else if (element == EL_DARK_YAMYAM && IN_LEV_FIELD(newx, newy) &&
-	     IS_MAMPF2(Feld[newx][newy]))
+	     IS_FOOD_DARK_YAMYAM(Feld[newx][newy]))
     {
       if (AmoebaNr[newx][newy])
       {
@@ -3287,7 +4607,7 @@ void StartMoving(int x, int y)
 	DrawLevelField(newx, newy);
       }
 
-      PlaySoundLevel(x, y, SND_DARK_YAMYAM_EATING);
+      PlayLevelSound(x, y, SND_DARK_YAMYAM_DIGGING);
     }
     else if ((element == EL_PACMAN || element == EL_MOLE)
 	     && IN_LEV_FIELD(newx, newy) && IS_AMOEBOID(Feld[newx][newy]))
@@ -3303,7 +4623,12 @@ void StartMoving(int x, int y)
       if (element == EL_MOLE)
       {
 	Feld[newx][newy] = EL_AMOEBA_SHRINKING;
-	PlaySoundLevel(x, y, SND_MOLE_EATING);
+	PlayLevelSound(x, y, SND_MOLE_DIGGING);
+
+	ResetGfxAnimation(x, y);
+	GfxAction[x][y] = ACTION_DIGGING;
+	DrawLevelField(x, y);
+
 	MovDelay[newx][newy] = 0;	/* start amoeba shrinking delay */
 	return;				/* wait for shrinking amoeba */
       }
@@ -3311,7 +4636,7 @@ void StartMoving(int x, int y)
       {
 	Feld[newx][newy] = EL_EMPTY;
 	DrawLevelField(newx, newy);
-	PlaySoundLevel(x, y, SND_PACMAN_EATING);
+	PlayLevelSound(x, y, SND_PACMAN_DIGGING);
       }
     }
     else if (element == EL_MOLE && IN_LEV_FIELD(newx, newy) &&
@@ -3327,30 +4652,38 @@ void StartMoving(int x, int y)
 
       TurnRound(x, y);
 
-      if (element == EL_BUG || element == EL_SPACESHIP ||
+#if 1
+      if (GFX_ELEMENT(element) != EL_SAND)     /* !!! FIX THIS (crumble) !!! */
+	DrawLevelElementAnimation(x, y, element);
+#else
+      if (element == EL_BUG ||
+	  element == EL_SPACESHIP ||
 	  element == EL_SP_SNIKSNAK)
 	DrawLevelField(x, y);
-      else if (element == EL_BUG || element == EL_SPACESHIP ||
-	       element == EL_SP_SNIKSNAK || element == EL_MOLE)
+      else if (element == EL_MOLE)
 	DrawLevelField(x, y);
-      else if (element == EL_BD_BUTTERFLY || element == EL_BD_FIREFLY)
+      else if (element == EL_BD_BUTTERFLY ||
+	       element == EL_BD_FIREFLY)
 	DrawLevelElementAnimationIfNeeded(x, y, element);
       else if (element == EL_SATELLITE)
 	DrawLevelElementAnimationIfNeeded(x, y, element);
       else if (element == EL_SP_ELECTRON)
 	DrawLevelElementAnimationIfNeeded(x, y, element);
+#endif
 
       if (DONT_TOUCH(element))
 	TestIfBadThingTouchesHero(x, y);
 
-      PlaySoundLevelAction(x, y, ACTION_WAITING);
+#if 0
+      PlayLevelSoundAction(x, y, ACTION_WAITING);
+#endif
 
       return;
     }
 
     InitMovingField(x, y, MovDir[x][y]);
 
-    PlaySoundLevelAction(x, y, ACTION_MOVING);
+    PlayLevelSoundAction(x, y, ACTION_MOVING);
   }
 
   if (MovDir[x][y])
@@ -3363,177 +4696,263 @@ void ContinueMoving(int x, int y)
   int direction = MovDir[x][y];
   int dx = (direction == MV_LEFT ? -1 : direction == MV_RIGHT ? +1 : 0);
   int dy = (direction == MV_UP   ? -1 : direction == MV_DOWN  ? +1 : 0);
-  int horiz_move = (dx != 0);
   int newx = x + dx, newy = y + dy;
-  int step = (horiz_move ? dx : dy) * TILEX / 8;
-
-  if (element == EL_AMOEBA_DROP || element == EL_AMOEBA_DRIPPING)
-    step /= 2;
-  else if (element == EL_QUICKSAND_FILLING ||
-	   element == EL_QUICKSAND_EMPTYING)
-    step /= 4;
-  else if (element == EL_MAGIC_WALL_FILLING ||
-	   element == EL_BD_MAGIC_WALL_FILLING ||
-	   element == EL_MAGIC_WALL_EMPTYING ||
-	   element == EL_BD_MAGIC_WALL_EMPTYING)
-    step /= 2;
-  else if (CAN_FALL(element) && horiz_move &&
-	   y < lev_fieldy-1 && IS_BELT_ACTIVE(Feld[x][y+1]))
-    step /= 2;
-  else if (element == EL_SPRING && horiz_move)
-    step *= 2;
+  int nextx = newx + dx, nexty = newy + dy;
+  boolean pushed = Pushed[x][y];
 
-#if OLD_GAME_BEHAVIOUR
-  else if (CAN_FALL(element) && horiz_move && !IS_SP_ELEMENT(element))
-    step*=2;
-#endif
+  MovPos[x][y] += getElementMoveStepsize(x, y);
 
-  MovPos[x][y] += step;
+  if (pushed)		/* special case: moving object pushed by player */
+    MovPos[x][y] = SIGN(MovPos[x][y]) * (TILEX - ABS(PLAYERINFO(x,y)->MovPos));
 
-  if (ABS(MovPos[x][y]) >= TILEX)	/* object reached its destination */
+  if (ABS(MovPos[x][y]) < TILEX)
   {
-    Feld[x][y] = EL_EMPTY;
-    Feld[newx][newy] = element;
+    DrawLevelField(x, y);
 
-    if (element == EL_MOLE)
-    {
-      int i;
-      static int xy[4][2] =
-      {
-	{ 0, -1 },
-	{ -1, 0 },
-	{ +1, 0 },
-	{ 0, +1 }
-      };
+    return;	/* element is still moving */
+  }
 
-      Feld[x][y] = EL_SAND;
-      DrawLevelField(x, y);
+  /* element reached destination field */
 
-      for(i=0; i<4; i++)
-      {
-	int xx, yy;
+  Feld[x][y] = EL_EMPTY;
+  Feld[newx][newy] = element;
+  MovPos[x][y] = 0;	/* force "not moving" for "crumbled sand" */
 
-	xx = x + xy[i][0];
-	yy = y + xy[i][1];
+  if (element == EL_MOLE)
+  {
+    Feld[x][y] = EL_SAND;
 
-	if (IN_LEV_FIELD(xx, yy) && Feld[xx][yy] == EL_SAND)
-	  DrawLevelField(xx, yy);	/* for "DrawCrumbledSand()" */
-      }
-    }
+    DrawLevelFieldCrumbledSandNeighbours(x, y);
+  }
+  else if (element == EL_QUICKSAND_FILLING)
+  {
+    element = Feld[newx][newy] = get_next_element(element);
+    Store[newx][newy] = Store[x][y];
+  }
+  else if (element == EL_QUICKSAND_EMPTYING)
+  {
+    Feld[x][y] = get_next_element(element);
+    element = Feld[newx][newy] = Store[x][y];
+  }
+  else if (element == EL_MAGIC_WALL_FILLING)
+  {
+    element = Feld[newx][newy] = get_next_element(element);
+    if (!game.magic_wall_active)
+      element = Feld[newx][newy] = EL_MAGIC_WALL_DEAD;
+    Store[newx][newy] = Store[x][y];
+  }
+  else if (element == EL_MAGIC_WALL_EMPTYING)
+  {
+    Feld[x][y] = get_next_element(element);
+    if (!game.magic_wall_active)
+      Feld[x][y] = EL_MAGIC_WALL_DEAD;
+    element = Feld[newx][newy] = Store[x][y];
+  }
+  else if (element == EL_BD_MAGIC_WALL_FILLING)
+  {
+    element = Feld[newx][newy] = get_next_element(element);
+    if (!game.magic_wall_active)
+      element = Feld[newx][newy] = EL_BD_MAGIC_WALL_DEAD;
+    Store[newx][newy] = Store[x][y];
+  }
+  else if (element == EL_BD_MAGIC_WALL_EMPTYING)
+  {
+    Feld[x][y] = get_next_element(element);
+    if (!game.magic_wall_active)
+      Feld[x][y] = EL_BD_MAGIC_WALL_DEAD;
+    element = Feld[newx][newy] = Store[x][y];
+  }
+  else if (element == EL_AMOEBA_DROPPING)
+  {
+    Feld[x][y] = get_next_element(element);
+    element = Feld[newx][newy] = Store[x][y];
+  }
+  else if (element == EL_SOKOBAN_OBJECT)
+  {
+    if (Back[x][y])
+      Feld[x][y] = Back[x][y];
 
-    if (element == EL_QUICKSAND_FILLING)
-    {
-      element = Feld[newx][newy] = get_next_element(element);
-      Store[newx][newy] = Store[x][y];
-    }
-    else if (element == EL_QUICKSAND_EMPTYING)
-    {
-      Feld[x][y] = get_next_element(element);
-      element = Feld[newx][newy] = Store[x][y];
-    }
-    else if (element == EL_MAGIC_WALL_FILLING)
-    {
-      element = Feld[newx][newy] = get_next_element(element);
-      if (!game.magic_wall_active)
-	element = Feld[newx][newy] = EL_MAGIC_WALL_DEAD;
-      Store[newx][newy] = Store[x][y];
-    }
-    else if (element == EL_MAGIC_WALL_EMPTYING)
-    {
-      Feld[x][y] = get_next_element(element);
-      if (!game.magic_wall_active)
-	Feld[x][y] = EL_MAGIC_WALL_DEAD;
-      element = Feld[newx][newy] = Store[x][y];
-    }
-    else if (element == EL_BD_MAGIC_WALL_FILLING)
-    {
-      element = Feld[newx][newy] = get_next_element(element);
-      if (!game.magic_wall_active)
-	element = Feld[newx][newy] = EL_BD_MAGIC_WALL_DEAD;
-      Store[newx][newy] = Store[x][y];
-    }
-    else if (element == EL_BD_MAGIC_WALL_EMPTYING)
-    {
-      Feld[x][y] = get_next_element(element);
-      if (!game.magic_wall_active)
-	Feld[x][y] = EL_BD_MAGIC_WALL_DEAD;
-      element = Feld[newx][newy] = Store[x][y];
-    }
-    else if (element == EL_AMOEBA_DRIPPING)
-    {
-      Feld[x][y] = get_next_element(element);
-      element = Feld[newx][newy] = Store[x][y];
-    }
-    else if (Store[x][y] == EL_ACID)
-    {
-      element = Feld[newx][newy] = EL_ACID;
-    }
+    if (Back[newx][newy])
+      Feld[newx][newy] = EL_SOKOBAN_FIELD_FULL;
 
-    Store[x][y] = 0;
-    MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
-    MovDelay[newx][newy] = 0;
+    Back[x][y] = Back[newx][newy] = 0;
+  }
+  else if (Store[x][y] == EL_ACID)
+  {
+    element = Feld[newx][newy] = EL_ACID;
+  }
 
-#if 0
-    /* all done in "InitMovingField()" */
-    GfxAction[newx][newy] = GfxAction[x][y];	/* keep action one frame */
-    GfxRandom[newx][newy] = GfxRandom[x][y];	/* keep same random value */
-#endif
+  Store[x][y] = 0;
+  MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
+  MovDelay[newx][newy] = 0;
 
-    /* copy animation control values to new field */
-    GfxFrame[newx][newy]  = GfxFrame[x][y];
-    GfxAction[newx][newy] = GfxAction[x][y];
-    GfxRandom[newx][newy] = GfxRandom[x][y];
+  /* copy element change control values to new field */
+  ChangeDelay[newx][newy] = ChangeDelay[x][y];
+  ChangePage[newx][newy] = ChangePage[x][y];
+  Changed[newx][newy] = Changed[x][y];
+  ChangeEvent[newx][newy] = ChangeEvent[x][y];
 
-    ResetGfxAnimation(x, y);	/* reset animation values for old field */
+  ChangeDelay[x][y] = 0;
+  ChangePage[x][y] = -1;
+  Changed[x][y] = CE_BITMASK_DEFAULT;
+  ChangeEvent[x][y] = CE_BITMASK_DEFAULT;
+
+  /* copy animation control values to new field */
+  GfxFrame[newx][newy]  = GfxFrame[x][y];
+  GfxRandom[newx][newy] = GfxRandom[x][y];	/* keep same random value */
+  GfxAction[newx][newy] = GfxAction[x][y];	/* keep action one frame  */
+  GfxDir[newx][newy]    = GfxDir[x][y];		/* keep element direction */
+
+  Pushed[x][y] = Pushed[newx][newy] = FALSE;
+
+  ResetGfxAnimation(x, y);	/* reset animation values for old field */
 
-#if 1
 #if 0
-    if (!CAN_MOVE(element))
-      MovDir[newx][newy] = 0;
+  /* 2.1.1 (does not work correctly for spring) */
+  if (!CAN_MOVE(element))
+    MovDir[newx][newy] = 0;
 #else
-    /*
-    if (CAN_FALL(element) && MovDir[newx][newy] == MV_DOWN)
-      MovDir[newx][newy] = 0;
-    */
 
-    if (!CAN_MOVE(element) ||
-	(element == EL_SPRING && MovDir[newx][newy] == MV_DOWN))
-      MovDir[newx][newy] = 0;
+#if 0
+  /* (does not work for falling objects that slide horizontally) */
+  if (CAN_FALL(element) && MovDir[newx][newy] == MV_DOWN)
+    MovDir[newx][newy] = 0;
+#else
+  /*
+  if (!CAN_MOVE(element) ||
+      (element == EL_SPRING && MovDir[newx][newy] == MV_DOWN))
+    MovDir[newx][newy] = 0;
+  */
+
+  if (!CAN_MOVE(element) ||
+      (CAN_FALL(element) && direction == MV_DOWN))
+    GfxDir[x][y] = MovDir[newx][newy] = 0;
+
 #endif
 #endif
 
-    DrawLevelField(x, y);
-    DrawLevelField(newx, newy);
+  DrawLevelField(x, y);
+  DrawLevelField(newx, newy);
 
-    Stop[newx][newy] = TRUE;
-    JustStopped[newx][newy] = 3;
+  Stop[newx][newy] = TRUE;	/* ignore this element until the next frame */
 
-    if (DONT_TOUCH(element))	/* object may be nasty to player or others */
-    {
-      TestIfBadThingTouchesHero(newx, newy);
-      TestIfBadThingTouchesFriend(newx, newy);
-      TestIfBadThingTouchesOtherBadThing(newx, newy);
-    }
-    else if (element == EL_PENGUIN)
-      TestIfFriendTouchesBadThing(newx, newy);
+  /* prevent pushed element from moving on in pushed direction */
+  if (pushed && CAN_MOVE(element) &&
+      element_info[element].move_pattern & MV_ANY_DIRECTION &&
+      !(element_info[element].move_pattern & direction))
+    TurnRound(newx, newy);
 
-    if (CAN_SMASH(element) && direction == MV_DOWN &&
-	(newy == lev_fieldy-1 || !IS_FREE(x, newy+1)))
-      Impact(x, newy);
+  if (!pushed)	/* special case: moving object pushed by player */
+  {
+    WasJustMoving[newx][newy] = 3;
+
+    if (CAN_FALL(element) && direction == MV_DOWN)
+      WasJustFalling[newx][newy] = 3;
+  }
+
+  if (DONT_TOUCH(element))	/* object may be nasty to player or others */
+  {
+    TestIfBadThingTouchesHero(newx, newy);
+    TestIfBadThingTouchesFriend(newx, newy);
+
+    if (!IS_CUSTOM_ELEMENT(element))
+      TestIfBadThingTouchesOtherBadThing(newx, newy);
   }
-  else				/* still moving on */
+  else if (element == EL_PENGUIN)
+    TestIfFriendTouchesBadThing(newx, newy);
+
+  if (CAN_FALL(element) && direction == MV_DOWN &&
+      (newy == lev_fieldy - 1 || !IS_FREE(x, newy + 1)))
+    Impact(x, newy);
+
+#if 1
+  TestIfElementTouchesCustomElement(x, y);		/* for empty space */
+#endif
+
+#if 0
+  if (ChangePage[newx][newy] != -1)			/* delayed change */
+    ChangeElement(newx, newy, ChangePage[newx][newy]);
+#endif
+
+  if (!IN_LEV_FIELD(nextx, nexty) || !IS_FREE(nextx, nexty))
   {
+    /* !!! fix side (direction) orientation here and elsewhere !!! */
+    CheckElementSideChange(newx, newy, Feld[newx][newy],
+			   direction, CE_COLLISION_ACTIVE, -1);
+
 #if 0
-    if (GfxAction[x][y] == ACTION_DEFAULT)
+    if (IN_LEV_FIELD(nextx, nexty))
     {
-      printf("reset GfxAction...\n");
+      static int opposite_directions[] =
+      {
+	MV_RIGHT,
+	MV_LEFT,
+	MV_DOWN,
+	MV_UP
+      };
+      int move_dir_bit = MV_DIR_BIT(direction);
+      int opposite_direction = opposite_directions[move_dir_bit];
+      int hitting_side = direction;
+      int touched_side = opposite_direction;
+      int hitting_element = Feld[newx][newy];
+      int touched_element = MovingOrBlocked2Element(nextx, nexty);
+      boolean object_hit = (!IS_MOVING(nextx, nexty) ||
+			    MovDir[nextx][nexty] != direction ||
+			    ABS(MovPos[nextx][nexty]) <= TILEY / 2);
+
+      if (object_hit)
+      {
+	int i;
+
+	CheckElementSideChange(nextx, nexty, Feld[nextx][nexty],
+			       opposite_direction, CE_COLLISION_PASSIVE, -1);
+
+	if (IS_CUSTOM_ELEMENT(hitting_element) &&
+	    HAS_ANY_CHANGE_EVENT(hitting_element, CE_OTHER_IS_COLL_ACTIVE))
+	{
+	  for (i = 0; i < element_info[hitting_element].num_change_pages; i++)
+	  {
+	    struct ElementChangeInfo *change =
+	      &element_info[hitting_element].change_page[i];
+
+	    if (change->can_change &&
+		change->events & CH_EVENT_BIT(CE_OTHER_IS_COLL_ACTIVE) &&
+		change->sides & touched_side &&
+		change->trigger_element == touched_element)
+	    {
+	      CheckElementSideChange(newx, newy, hitting_element,
+				     CH_SIDE_ANY, CE_OTHER_IS_COLL_ACTIVE, i);
+	      break;
+	    }
+	  }
+	}
 
-      GfxAction[x][y] = ACTION_MOVING;
+	if (IS_CUSTOM_ELEMENT(touched_element) &&
+	    HAS_ANY_CHANGE_EVENT(touched_element, CE_OTHER_IS_COLL_PASSIVE))
+	{
+	  for (i = 0; i < element_info[touched_element].num_change_pages; i++)
+	  {
+	    struct ElementChangeInfo *change =
+	      &element_info[touched_element].change_page[i];
+
+	    if (change->can_change &&
+		change->events & CH_EVENT_BIT(CE_OTHER_IS_COLL_PASSIVE) &&
+		change->sides & hitting_side &&
+		change->trigger_element == hitting_element)
+	    {
+	      CheckElementSideChange(nextx, nexty, touched_element,
+				     CH_SIDE_ANY, CE_OTHER_IS_COLL_PASSIVE, i);
+	      break;
+	    }
+	  }
+	}
+      }
     }
 #endif
-
-    DrawLevelField(x, y);
   }
+
+  TestIfPlayerTouchesCustomElement(newx, newy);
+  TestIfElementTouchesCustomElement(newx, newy);
 }
 
 int AmoebeNachbarNr(int ax, int ay)
@@ -3549,7 +4968,7 @@ int AmoebeNachbarNr(int ax, int ay)
     { 0, +1 }
   };
 
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
     int x = ax + xy[i][0];
     int y = ay + xy[i][1];
@@ -3579,7 +4998,7 @@ void AmoebenVereinigen(int ax, int ay)
   if (new_group_nr == 0)
     return;
 
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
     x = ax + xy[i][0];
     y = ay + xy[i][1];
@@ -3602,9 +5021,9 @@ void AmoebenVereinigen(int ax, int ay)
       AmoebaCnt2[new_group_nr] += AmoebaCnt2[old_group_nr];
       AmoebaCnt2[old_group_nr] = 0;
 
-      for (yy=0; yy<lev_fieldy; yy++)
+      for (yy = 0; yy < lev_fieldy; yy++)
       {
-	for (xx=0; xx<lev_fieldx; xx++)
+	for (xx = 0; xx < lev_fieldx; xx++)
 	{
 	  if (AmoebaNr[xx][yy] == old_group_nr)
 	    AmoebaNr[xx][yy] = new_group_nr;
@@ -3631,9 +5050,9 @@ void AmoebeUmwandeln(int ax, int ay)
     }
 #endif
 
-    for (y=0; y<lev_fieldy; y++)
+    for (y = 0; y < lev_fieldy; y++)
     {
-      for (x=0; x<lev_fieldx; x++)
+      for (x = 0; x < lev_fieldx; x++)
       {
 	if (Feld[x][y] == EL_AMOEBA_DEAD && AmoebaNr[x][y] == group_nr)
 	{
@@ -3642,7 +5061,7 @@ void AmoebeUmwandeln(int ax, int ay)
 	}
       }
     }
-    PlaySoundLevel(ax, ay, (IS_GEM(level.amoeba_content) ?
+    PlayLevelSound(ax, ay, (IS_GEM(level.amoeba_content) ?
 			    SND_AMOEBA_TURNING_TO_GEM :
 			    SND_AMOEBA_TURNING_TO_ROCK));
     Bang(ax, ay);
@@ -3657,7 +5076,7 @@ void AmoebeUmwandeln(int ax, int ay)
       { 0, +1 }
     };
 
-    for (i=0; i<4; i++)
+    for (i = 0; i < 4; i++)
     {
       x = ax + xy[i][0];
       y = ay + xy[i][1];
@@ -3667,7 +5086,7 @@ void AmoebeUmwandeln(int ax, int ay)
 
       if (Feld[x][y] == EL_AMOEBA_TO_DIAMOND)
       {
-	PlaySoundLevel(x, y, (IS_GEM(level.amoeba_content) ?
+	PlayLevelSound(x, y, (IS_GEM(level.amoeba_content) ?
 			      SND_AMOEBA_TURNING_TO_GEM :
 			      SND_AMOEBA_TURNING_TO_ROCK));
 	Bang(x, y);
@@ -3691,14 +5110,14 @@ void AmoebeUmwandelnBD(int ax, int ay, int new_element)
   }
 #endif
 
-  for (y=0; y<lev_fieldy; y++)
+  for (y = 0; y < lev_fieldy; y++)
   {
-    for (x=0; x<lev_fieldx; x++)
+    for (x = 0; x < lev_fieldx; x++)
     {
       if (AmoebaNr[x][y] == group_nr &&
 	  (Feld[x][y] == EL_AMOEBA_DEAD ||
 	   Feld[x][y] == EL_BD_AMOEBA ||
-	   Feld[x][y] == EL_AMOEBA_CREATING))
+	   Feld[x][y] == EL_AMOEBA_GROWING))
       {
 	AmoebaNr[x][y] = 0;
 	Feld[x][y] = new_element;
@@ -3710,7 +5129,7 @@ void AmoebeUmwandelnBD(int ax, int ay, int new_element)
   }
 
   if (done)
-    PlaySoundLevel(ax, ay, (new_element == EL_BD_ROCK ?
+    PlayLevelSound(ax, ay, (new_element == EL_BD_ROCK ?
 			    SND_BD_AMOEBA_TURNING_TO_ROCK :
 			    SND_BD_AMOEBA_TURNING_TO_GEM));
 }
@@ -3726,10 +5145,14 @@ void AmoebeWaechst(int x, int y)
 
     if (DelayReached(&sound_delay, sound_delay_value))
     {
+#if 1
+      PlayLevelSoundElementAction(x, y, Store[x][y], ACTION_GROWING);
+#else
       if (Store[x][y] == EL_BD_AMOEBA)
-	PlaySoundLevel(x, y, SND_BD_AMOEBA_CREATING);
+	PlayLevelSound(x, y, SND_BD_AMOEBA_GROWING);
       else
-	PlaySoundLevel(x, y, SND_AMOEBA_CREATING);
+	PlayLevelSound(x, y, SND_AMOEBA_GROWING);
+#endif
       sound_delay_value = 30;
     }
   }
@@ -3739,10 +5162,10 @@ void AmoebeWaechst(int x, int y)
     MovDelay[x][y]--;
     if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
     {
-      int frame = getGraphicAnimationFrame(IMG_AMOEBA_CREATING,
+      int frame = getGraphicAnimationFrame(IMG_AMOEBA_GROWING,
 					   6 - MovDelay[x][y]);
 
-      DrawGraphic(SCREENX(x), SCREENY(y), IMG_AMOEBA_CREATING, frame);
+      DrawGraphic(SCREENX(x), SCREENY(y), IMG_AMOEBA_GROWING, frame);
     }
 
     if (!MovDelay[x][y])
@@ -3794,6 +5217,7 @@ void AmoebeAbleger(int ax, int ay)
 {
   int i;
   int element = Feld[ax][ay];
+  int graphic = el2img(element);
   int newax = ax, neway = ay;
   static int xy[4][2] =
   {
@@ -3810,6 +5234,9 @@ void AmoebeAbleger(int ax, int ay)
     return;
   }
 
+  if (IS_ANIMATED(graphic))
+    DrawLevelGraphicAnimationIfNeeded(ax, ay, graphic);
+
   if (!MovDelay[ax][ay])	/* start making new amoeba field */
     MovDelay[ax][ay] = RND(FRAMES_PER_SECOND * 25 / (1 + level.amoeba_speed));
 
@@ -3829,6 +5256,7 @@ void AmoebeAbleger(int ax, int ay)
     if (!IN_LEV_FIELD(x, y))
       return;
 
+    /* !!! extend EL_SAND to anything diggable (but maybe not SP_BASE) !!! */
     if (IS_FREE(x, y) ||
 	Feld[x][y] == EL_SAND || Feld[x][y] == EL_QUICKSAND_EMPTY)
     {
@@ -3844,7 +5272,7 @@ void AmoebeAbleger(int ax, int ay)
     int start = RND(4);
     boolean waiting_for_player = FALSE;
 
-    for (i=0; i<4; i++)
+    for (i = 0; i < 4; i++)
     {
       int j = (start + i) % 4;
       int x = ax + xy[j][0];
@@ -3853,6 +5281,7 @@ void AmoebeAbleger(int ax, int ay)
       if (!IN_LEV_FIELD(x, y))
 	continue;
 
+      /* !!! extend EL_SAND to anything diggable (but maybe not SP_BASE) !!! */
       if (IS_FREE(x, y) ||
 	  Feld[x][y] == EL_SAND || Feld[x][y] == EL_QUICKSAND_EMPTY)
       {
@@ -3915,18 +5344,22 @@ void AmoebeAbleger(int ax, int ay)
   if (element != EL_AMOEBA_WET || neway < ay || !IS_FREE(newax, neway) ||
       (neway == lev_fieldy - 1 && newax != ax))
   {
-    Feld[newax][neway] = EL_AMOEBA_CREATING;	/* creation of new amoeba */
+    Feld[newax][neway] = EL_AMOEBA_GROWING;	/* creation of new amoeba */
     Store[newax][neway] = element;
   }
   else if (neway == ay)
   {
     Feld[newax][neway] = EL_AMOEBA_DROP;	/* drop left/right of amoeba */
-    PlaySoundLevel(newax, neway, SND_AMOEBA_DROP_CREATING);
+#if 1
+    PlayLevelSoundAction(newax, neway, ACTION_GROWING);
+#else
+    PlayLevelSound(newax, neway, SND_AMOEBA_GROWING);
+#endif
   }
   else
   {
     InitMovingField(ax, ay, MV_DOWN);		/* drop dripping from amoeba */
-    Feld[ax][ay] = EL_AMOEBA_DRIPPING;
+    Feld[ax][ay] = EL_AMOEBA_DROPPING;
     Store[ax][ay] = EL_AMOEBA_DROP;
     ContinueMoving(ax, ay);
     return;
@@ -3941,8 +5374,12 @@ void Life(int ax, int ay)
   static int life[4] = { 2, 3, 3, 3 };	/* parameters for "game of life" */
   int life_time = 40;
   int element = Feld[ax][ay];
+  int graphic = el2img(element);
   boolean changed = FALSE;
 
+  if (IS_ANIMATED(graphic))
+    DrawLevelGraphicAnimationIfNeeded(ax, ay, graphic);
+
   if (Stop[ax][ay])
     return;
 
@@ -3956,7 +5393,7 @@ void Life(int ax, int ay)
       return;
   }
 
-  for (y1=-1; y1<2; y1++) for(x1=-1; x1<2; x1++)
+  for (y1 = -1; y1 < 2; y1++) for (x1 = -1; x1 < 2; x1++)
   {
     int xx = ax+x1, yy = ay+y1;
     int nachbarn = 0;
@@ -3964,7 +5401,7 @@ void Life(int ax, int ay)
     if (!IN_LEV_FIELD(xx, yy))
       continue;
 
-    for (y2=-1; y2<2; y2++) for (x2=-1; x2<2; x2++)
+    for (y2 = -1; y2 < 2; y2++) for (x2 = -1; x2 < 2; x2++)
     {
       int x = xx+x2, y = yy+y2;
 
@@ -3972,7 +5409,7 @@ void Life(int ax, int ay)
 	continue;
 
       if (((Feld[x][y] == element ||
-	    (element == EL_GAMEOFLIFE && IS_PLAYER(x, y))) &&
+	    (element == EL_GAME_OF_LIFE && IS_PLAYER(x, y))) &&
 	   !Stop[x][y]) ||
 	  (IS_FREE(x, y) && Stop[x][y]))
 	nachbarn++;
@@ -3989,12 +5426,13 @@ void Life(int ax, int ay)
 	changed = TRUE;
       }
     }
+    /* !!! extend EL_SAND to anything diggable (but maybe not SP_BASE) !!! */
     else if (IS_FREE(xx, yy) || Feld[xx][yy] == EL_SAND)
     {					/* free border field */
       if (nachbarn >= life[2] && nachbarn <= life[3])
       {
 	Feld[xx][yy] = element;
-	MovDelay[xx][yy] = (element == EL_GAMEOFLIFE ? 0 : life_time-1);
+	MovDelay[xx][yy] = (element == EL_GAME_OF_LIFE ? 0 : life_time-1);
 	if (!Stop[xx][yy])
 	  DrawLevelField(xx, yy);
 	Stop[xx][yy] = TRUE;
@@ -4004,18 +5442,18 @@ void Life(int ax, int ay)
   }
 
   if (changed)
-    PlaySoundLevel(ax, ay, element == EL_GAMEOFLIFE ? SND_GAMEOFLIFE_CREATING :
-		   SND_BIOMAZE_CREATING);
+    PlayLevelSound(ax, ay, element == EL_BIOMAZE ? SND_BIOMAZE_GROWING :
+		   SND_GAME_OF_LIFE_GROWING);
 }
 
 static void InitRobotWheel(int x, int y)
 {
-  MovDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+  ChangeDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
 }
 
 static void RunRobotWheel(int x, int y)
 {
-  PlaySoundLevel(x, y, SND_ROBOT_WHEEL_ACTIVE);
+  PlayLevelSound(x, y, SND_ROBOT_WHEEL_ACTIVE);
 }
 
 static void StopRobotWheel(int x, int y)
@@ -4026,12 +5464,12 @@ static void StopRobotWheel(int x, int y)
 
 static void InitTimegateWheel(int x, int y)
 {
-  MovDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+  ChangeDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
 }
 
 static void RunTimegateWheel(int x, int y)
 {
-  PlaySoundLevel(x, y, SND_TIMEGATE_SWITCH_ACTIVE);
+  PlayLevelSound(x, y, SND_TIMEGATE_SWITCH_ACTIVE);
 }
 
 void CheckExit(int x, int y)
@@ -4039,37 +5477,63 @@ void CheckExit(int x, int y)
   if (local_player->gems_still_needed > 0 ||
       local_player->sokobanfields_still_needed > 0 ||
       local_player->lights_still_needed > 0)
+  {
+    int element = Feld[x][y];
+    int graphic = el2img(element);
+
+    if (IS_ANIMATED(graphic))
+      DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
+
+    return;
+  }
+
+  if (AllPlayersGone)	/* do not re-open exit door closed after last player */
     return;
 
   Feld[x][y] = EL_EXIT_OPENING;
 
-  PlaySoundLevelNearest(x, y, SND_EXIT_OPENING);
+  PlayLevelSoundNearest(x, y, SND_CLASS_EXIT_OPENING);
 }
 
 void CheckExitSP(int x, int y)
 {
   if (local_player->gems_still_needed > 0)
+  {
+    int element = Feld[x][y];
+    int graphic = el2img(element);
+
+    if (IS_ANIMATED(graphic))
+      DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
+
+    return;
+  }
+
+  if (AllPlayersGone)	/* do not re-open exit door closed after last player */
     return;
 
-  Feld[x][y] = EL_SP_EXIT_OPEN;
+  Feld[x][y] = EL_SP_EXIT_OPENING;
 
-  PlaySoundLevelNearest(x, y, SND_SP_EXIT_OPENING);
+  PlayLevelSoundNearest(x, y, SND_CLASS_SP_EXIT_OPENING);
 }
 
 static void CloseAllOpenTimegates()
 {
   int x, y;
 
-  for (y=0; y<lev_fieldy; y++)
+  for (y = 0; y < lev_fieldy; y++)
   {
-    for (x=0; x<lev_fieldx; x++)
+    for (x = 0; x < lev_fieldx; x++)
     {
       int element = Feld[x][y];
 
       if (element == EL_TIMEGATE_OPEN || element == EL_TIMEGATE_OPENING)
       {
 	Feld[x][y] = EL_TIMEGATE_CLOSING;
-	PlaySoundLevel(x, y, SND_TIMEGATE_CLOSING);
+#if 1
+	PlayLevelSoundAction(x, y, ACTION_CLOSING);
+#else
+	PlayLevelSound(x, y, SND_TIMEGATE_CLOSING);
+#endif
       }
     }
   }
@@ -4081,47 +5545,37 @@ void EdelsteinFunkeln(int x, int y)
     return;
 
   if (Feld[x][y] == EL_BD_DIAMOND)
-#if 0
-    DrawLevelElementAnimation(x, y, el2img(Feld[x][y]));
-#else
     return;
-#endif
-  else
-  {
-    if (MovDelay[x][y] == 0)	/* next animation frame */
-      MovDelay[x][y] = 11 * !SimpleRND(500);
 
-    if (MovDelay[x][y] != 0)	/* wait some time before next frame */
-    {
-      MovDelay[x][y]--;
+  if (MovDelay[x][y] == 0)	/* next animation frame */
+    MovDelay[x][y] = 11 * !SimpleRND(500);
+
+  if (MovDelay[x][y] != 0)	/* wait some time before next frame */
+  {
+    MovDelay[x][y]--;
 
-      if (setup.direct_draw && MovDelay[x][y])
-	SetDrawtoField(DRAW_BUFFERED);
+    if (setup.direct_draw && MovDelay[x][y])
+      SetDrawtoField(DRAW_BUFFERED);
 
-#if 0
-      DrawGraphic(SCREENX(x), SCREENY(y), el2img(Feld[x][y]), 0);
-#else
-      DrawLevelElementAnimation(x, y, Feld[x][y]);
-#endif
+    DrawLevelElementAnimation(x, y, Feld[x][y]);
 
-      if (MovDelay[x][y] != 0)
-      {
-	int frame = getGraphicAnimationFrame(IMG_TWINKLE_WHITE,
-					     10 - MovDelay[x][y]);
+    if (MovDelay[x][y] != 0)
+    {
+      int frame = getGraphicAnimationFrame(IMG_TWINKLE_WHITE,
+					   10 - MovDelay[x][y]);
 
-	DrawGraphicThruMask(SCREENX(x), SCREENY(y), IMG_TWINKLE_WHITE, frame);
+      DrawGraphicThruMask(SCREENX(x), SCREENY(y), IMG_TWINKLE_WHITE, frame);
 
-	if (setup.direct_draw)
-	{
-	  int dest_x, dest_y;
+      if (setup.direct_draw)
+      {
+	int dest_x, dest_y;
 
-	  dest_x = FX + SCREENX(x) * TILEX;
-	  dest_y = FY + SCREENY(y) * TILEY;
+	dest_x = FX + SCREENX(x) * TILEX;
+	dest_y = FY + SCREENY(y) * TILEY;
 
-	  BlitBitmap(drawto_field, window,
-		     dest_x, dest_y, TILEX, TILEY, dest_x, dest_y);
-	  SetDrawtoField(DRAW_DIRECT);
-	}
+	BlitBitmap(drawto_field, window,
+		   dest_x, dest_y, TILEX, TILEY, dest_x, dest_y);
+	SetDrawtoField(DRAW_DIRECT);
       }
     }
   }
@@ -4140,7 +5594,7 @@ void MauerWaechst(int x, int y)
 
     if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
     {
-      int graphic = el_dir2img(Feld[x][y], MovDir[x][y]);
+      int graphic = el_dir2img(Feld[x][y], GfxDir[x][y]);
       int frame = getGraphicAnimationFrame(graphic, 17 - MovDelay[x][y]);
 
       DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
@@ -4150,28 +5604,28 @@ void MauerWaechst(int x, int y)
     {
       if (MovDir[x][y] == MV_LEFT)
       {
-	if (IN_LEV_FIELD(x - 1, y) && IS_MAUER(Feld[x - 1][y]))
+	if (IN_LEV_FIELD(x - 1, y) && IS_WALL(Feld[x - 1][y]))
 	  DrawLevelField(x - 1, y);
       }
       else if (MovDir[x][y] == MV_RIGHT)
       {
-	if (IN_LEV_FIELD(x + 1, y) && IS_MAUER(Feld[x + 1][y]))
+	if (IN_LEV_FIELD(x + 1, y) && IS_WALL(Feld[x + 1][y]))
 	  DrawLevelField(x + 1, y);
       }
       else if (MovDir[x][y] == MV_UP)
       {
-	if (IN_LEV_FIELD(x, y - 1) && IS_MAUER(Feld[x][y - 1]))
+	if (IN_LEV_FIELD(x, y - 1) && IS_WALL(Feld[x][y - 1]))
 	  DrawLevelField(x, y - 1);
       }
       else
       {
-	if (IN_LEV_FIELD(x, y + 1) && IS_MAUER(Feld[x][y + 1]))
+	if (IN_LEV_FIELD(x, y + 1) && IS_WALL(Feld[x][y + 1]))
 	  DrawLevelField(x, y + 1);
       }
 
       Feld[x][y] = Store[x][y];
       Store[x][y] = 0;
-      MovDir[x][y] = MV_NO_MOVING;
+      GfxDir[x][y] = MovDir[x][y] = MV_NO_MOVING;
       DrawLevelField(x, y);
     }
   }
@@ -4180,12 +5634,16 @@ void MauerWaechst(int x, int y)
 void MauerAbleger(int ax, int ay)
 {
   int element = Feld[ax][ay];
+  int graphic = el2img(element);
   boolean oben_frei = FALSE, unten_frei = FALSE;
   boolean links_frei = FALSE, rechts_frei = FALSE;
   boolean oben_massiv = FALSE, unten_massiv = FALSE;
   boolean links_massiv = FALSE, rechts_massiv = FALSE;
   boolean new_wall = FALSE;
 
+  if (IS_ANIMATED(graphic))
+    DrawLevelGraphicAnimationIfNeeded(ax, ay, graphic);
+
   if (!MovDelay[ax][ay])	/* start building new wall */
     MovDelay[ax][ay] = 6;
 
@@ -4205,76 +5663,83 @@ void MauerAbleger(int ax, int ay)
   if (IN_LEV_FIELD(ax+1, ay) && IS_FREE(ax+1, ay))
     rechts_frei = TRUE;
 
-  if (element == EL_WALL_GROWING_Y || element == EL_WALL_GROWING_XY)
+  if (element == EL_EXPANDABLE_WALL_VERTICAL ||
+      element == EL_EXPANDABLE_WALL_ANY)
   {
     if (oben_frei)
     {
-      Feld[ax][ay-1] = EL_WALL_GROWING_ACTIVE;
+      Feld[ax][ay-1] = EL_EXPANDABLE_WALL_GROWING;
       Store[ax][ay-1] = element;
-      MovDir[ax][ay-1] = MV_UP;
+      GfxDir[ax][ay-1] = MovDir[ax][ay-1] = MV_UP;
       if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay-1)))
   	DrawGraphic(SCREENX(ax), SCREENY(ay - 1),
-		    IMG_WALL_GROWING_ACTIVE_UP, 0);
+		    IMG_EXPANDABLE_WALL_GROWING_UP, 0);
       new_wall = TRUE;
     }
     if (unten_frei)
     {
-      Feld[ax][ay+1] = EL_WALL_GROWING_ACTIVE;
+      Feld[ax][ay+1] = EL_EXPANDABLE_WALL_GROWING;
       Store[ax][ay+1] = element;
-      MovDir[ax][ay+1] = MV_DOWN;
+      GfxDir[ax][ay+1] = MovDir[ax][ay+1] = MV_DOWN;
       if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay+1)))
   	DrawGraphic(SCREENX(ax), SCREENY(ay + 1),
-		    IMG_WALL_GROWING_ACTIVE_DOWN, 0);
+		    IMG_EXPANDABLE_WALL_GROWING_DOWN, 0);
       new_wall = TRUE;
     }
   }
 
-  if (element == EL_WALL_GROWING_X || element == EL_WALL_GROWING_XY ||
-      element == EL_WALL_GROWING)
+  if (element == EL_EXPANDABLE_WALL_HORIZONTAL ||
+      element == EL_EXPANDABLE_WALL_ANY ||
+      element == EL_EXPANDABLE_WALL)
   {
     if (links_frei)
     {
-      Feld[ax-1][ay] = EL_WALL_GROWING_ACTIVE;
+      Feld[ax-1][ay] = EL_EXPANDABLE_WALL_GROWING;
       Store[ax-1][ay] = element;
-      MovDir[ax-1][ay] = MV_LEFT;
+      GfxDir[ax-1][ay] = MovDir[ax-1][ay] = MV_LEFT;
       if (IN_SCR_FIELD(SCREENX(ax-1), SCREENY(ay)))
   	DrawGraphic(SCREENX(ax - 1), SCREENY(ay),
-		    IMG_WALL_GROWING_ACTIVE_LEFT, 0);
+		    IMG_EXPANDABLE_WALL_GROWING_LEFT, 0);
       new_wall = TRUE;
     }
 
     if (rechts_frei)
     {
-      Feld[ax+1][ay] = EL_WALL_GROWING_ACTIVE;
+      Feld[ax+1][ay] = EL_EXPANDABLE_WALL_GROWING;
       Store[ax+1][ay] = element;
-      MovDir[ax+1][ay] = MV_RIGHT;
+      GfxDir[ax+1][ay] = MovDir[ax+1][ay] = MV_RIGHT;
       if (IN_SCR_FIELD(SCREENX(ax+1), SCREENY(ay)))
   	DrawGraphic(SCREENX(ax + 1), SCREENY(ay),
-		    IMG_WALL_GROWING_ACTIVE_RIGHT, 0);
+		    IMG_EXPANDABLE_WALL_GROWING_RIGHT, 0);
       new_wall = TRUE;
     }
   }
 
-  if (element == EL_WALL_GROWING && (links_frei || rechts_frei))
+  if (element == EL_EXPANDABLE_WALL && (links_frei || rechts_frei))
     DrawLevelField(ax, ay);
 
-  if (!IN_LEV_FIELD(ax, ay-1) || IS_MAUER(Feld[ax][ay-1]))
+  if (!IN_LEV_FIELD(ax, ay-1) || IS_WALL(Feld[ax][ay-1]))
     oben_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax, ay+1) || IS_MAUER(Feld[ax][ay+1]))
+  if (!IN_LEV_FIELD(ax, ay+1) || IS_WALL(Feld[ax][ay+1]))
     unten_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax-1, ay) || IS_MAUER(Feld[ax-1][ay]))
+  if (!IN_LEV_FIELD(ax-1, ay) || IS_WALL(Feld[ax-1][ay]))
     links_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax+1, ay) || IS_MAUER(Feld[ax+1][ay]))
+  if (!IN_LEV_FIELD(ax+1, ay) || IS_WALL(Feld[ax+1][ay]))
     rechts_massiv = TRUE;
 
   if (((oben_massiv && unten_massiv) ||
-       element == EL_WALL_GROWING_X || element == EL_WALL_GROWING) &&
+       element == EL_EXPANDABLE_WALL_HORIZONTAL ||
+       element == EL_EXPANDABLE_WALL) &&
       ((links_massiv && rechts_massiv) ||
-       element == EL_WALL_GROWING_Y))
+       element == EL_EXPANDABLE_WALL_VERTICAL))
     Feld[ax][ay] = EL_WALL;
 
   if (new_wall)
-    PlaySoundLevel(ax, ay, SND_WALL_GROWING);
+#if 1
+    PlayLevelSoundAction(ax, ay, ACTION_GROWING);
+#else
+    PlayLevelSound(ax, ay, SND_EXPANDABLE_WALL_GROWING);
+#endif
 }
 
 void CheckForDragon(int x, int y)
@@ -4289,9 +5754,9 @@ void CheckForDragon(int x, int y)
     { 0, +1 }
   };
 
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
-    for (j=0; j<4; j++)
+    for (j = 0; j < 4; j++)
     {
       int xx = x + j*xy[i][0], yy = y + j*xy[i][1];
 
@@ -4308,9 +5773,9 @@ void CheckForDragon(int x, int y)
 
   if (!dragon_found)
   {
-    for (i=0; i<4; i++)
+    for (i = 0; i < 4; i++)
     {
-      for (j=0; j<3; j++)
+      for (j = 0; j < 3; j++)
       {
   	int xx = x + j*xy[i][0], yy = y + j*xy[i][1];
   
@@ -4331,7 +5796,7 @@ static void InitBuggyBase(int x, int y)
   int element = Feld[x][y];
   int activating_delay = FRAMES_PER_SECOND / 4;
 
-  MovDelay[x][y] =
+  ChangeDelay[x][y] =
     (element == EL_SP_BUGGY_BASE ?
      2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND) - activating_delay :
      element == EL_SP_BUGGY_BASE_ACTIVATING ?
@@ -4351,13 +5816,13 @@ static void WarnBuggyBase(int x, int y)
     { 0, +1 }
   };
 
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
     int xx = x + xy[i][0], yy = y + xy[i][1];
 
     if (IS_PLAYER(xx, yy))
     {
-      PlaySoundLevel(x, y, SND_SP_BUGGY_BASE_ACTIVE);
+      PlayLevelSound(x, y, SND_SP_BUGGY_BASE_ACTIVE);
 
       break;
     }
@@ -4366,12 +5831,12 @@ static void WarnBuggyBase(int x, int y)
 
 static void InitTrap(int x, int y)
 {
-  MovDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
+  ChangeDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
 }
 
 static void ActivateTrap(int x, int y)
 {
-  PlaySoundLevel(x, y, SND_TRAP_ACTIVATING);
+  PlayLevelSound(x, y, SND_TRAP_ACTIVATING);
 }
 
 static void ChangeActiveTrap(int x, int y)
@@ -4380,309 +5845,838 @@ static void ChangeActiveTrap(int x, int y)
 
   /* if new animation frame was drawn, correct crumbled sand border */
   if (IS_NEW_FRAME(GfxFrame[x][y], graphic))
-    DrawCrumbledSand(SCREENX(x), SCREENY(y));
+    DrawLevelFieldCrumbledSand(x, y);
 }
 
-static void ChangeElement(int x, int y)
+static void ChangeElementNowExt(int x, int y, int target_element)
 {
-  int element = Feld[x][y];
-
-  if (MovDelay[x][y] == 0)		/* initialize element change */
+  /* check if element under player changes from accessible to unaccessible
+     (needed for special case of dropping element which then changes) */
+  if (IS_PLAYER(x, y) && !PLAYER_PROTECTED(x, y) &&
+      IS_ACCESSIBLE(Feld[x][y]) && !IS_ACCESSIBLE(target_element))
   {
-    MovDelay[x][y] = changing_element[element].change_delay + 1;
+    Bang(x, y);
+    return;
+  }
 
-    ResetGfxAnimation(x, y);
-    ResetRandomAnimationValue(x, y);
+  RemoveField(x, y);
+  Feld[x][y] = target_element;
 
-    if (changing_element[element].pre_change_function)
-      changing_element[element].pre_change_function(x, y);
-  }
+  Changed[x][y] |= ChangeEvent[x][y];	/* ignore same changes in this frame */
 
-  MovDelay[x][y]--;
+  ResetGfxAnimation(x, y);
+  ResetRandomAnimationValue(x, y);
 
-  if (MovDelay[x][y] != 0)		/* continue element change */
-  {
-    if (IS_ANIMATED(el2img(element)))
-      DrawLevelElementAnimationIfNeeded(x, y, element);
+  InitField(x, y, FALSE);
+  if (CAN_MOVE(Feld[x][y]))
+    InitMovDir(x, y);
 
-    if (changing_element[element].change_function)
-      changing_element[element].change_function(x, y);
-  }
-  else					/* finish element change */
-  {
-    Feld[x][y] = changing_element[element].next_element;
+  DrawLevelField(x, y);
 
-    ResetGfxAnimation(x, y);
-    ResetRandomAnimationValue(x, y);
+  if (GFX_CRUMBLED(Feld[x][y]))
+    DrawLevelFieldCrumbledSandNeighbours(x, y);
 
-    DrawLevelField(x, y);
+  TestIfBadThingTouchesHero(x, y);
+  TestIfPlayerTouchesCustomElement(x, y);
+  TestIfElementTouchesCustomElement(x, y);
 
-    if (changing_element[element].post_change_function)
-      changing_element[element].post_change_function(x, y);
-  }
+  if (ELEM_IS_PLAYER(target_element))
+    RelocatePlayer(x, y, target_element);
 }
 
-static void PlayerActions(struct PlayerInfo *player, byte player_action)
+static boolean ChangeElementNow(int x, int y, int element, int page)
 {
-  static byte stored_player_action[MAX_PLAYERS];
-  static int num_stored_actions = 0;
+  struct ElementChangeInfo *change = &element_info[element].change_page[page];
+
+  /* always use default change event to prevent running into a loop */
+  if (ChangeEvent[x][y] == CE_BITMASK_DEFAULT)
+    ChangeEvent[x][y] = CH_EVENT_BIT(CE_DELAY);
+
+  /* do not change already changed elements with same change event */
 #if 0
-  static boolean save_tape_entry = FALSE;
+  if (Changed[x][y] & ChangeEvent[x][y])
+    return FALSE;
+#else
+  if (Changed[x][y])
+    return FALSE;
 #endif
-  boolean moved = FALSE, snapped = FALSE, bombed = FALSE;
-  int left	= player_action & JOY_LEFT;
-  int right	= player_action & JOY_RIGHT;
-  int up	= player_action & JOY_UP;
-  int down	= player_action & JOY_DOWN;
-  int button1	= player_action & JOY_BUTTON_1;
-  int button2	= player_action & JOY_BUTTON_2;
-  int dx	= (left ? -1	: right ? 1	: 0);
-  int dy	= (up   ? -1	: down  ? 1	: 0);
 
-  stored_player_action[player->index_nr] = 0;
-  num_stored_actions++;
+  Changed[x][y] |= ChangeEvent[x][y];	/* ignore same changes in this frame */
 
-  if (!player->active || tape.pausing)
-    return;
+  CheckTriggeredElementChange(x, y, Feld[x][y], CE_OTHER_IS_CHANGING);
 
-  if (player_action)
+  if (change->explode)
   {
-#if 0
-    save_tape_entry = TRUE;
-#endif
-    player->frame_reset_delay = 0;
+    Bang(x, y);
 
-    if (button1)
-      snapped = SnapField(player, dx, dy);
-    else
-    {
-      if (button2)
-	bombed = PlaceBomb(player);
-      moved = MoveFigure(player, dx, dy);
-    }
+    return TRUE;
+  }
 
-    if (tape.single_step && tape.recording && !tape.pausing)
-    {
-      if (button1 || (bombed && !moved))
-      {
-	TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
-	SnapField(player, 0, 0);		/* stop snapping */
-      }
-    }
+  if (change->use_content)
+  {
+    boolean complete_change = TRUE;
+    boolean can_change[3][3];
+    int xx, yy;
 
-#if 0
-    if (tape.recording && (moved || snapped || bombed))
+    for (yy = 0; yy < 3; yy++) for (xx = 0; xx < 3 ; xx++)
     {
-      if (bombed && !moved)
-	player_action &= JOY_BUTTON;
+      boolean half_destructible;
+      int ex = x + xx - 1;
+      int ey = y + yy - 1;
+      int e;
 
-      stored_player_action[player->index_nr] = player_action;
-      save_tape_entry = TRUE;
-    }
-    else if (tape.playing && snapped)
-      SnapField(player, 0, 0);			/* stop snapping */
-#else
-    stored_player_action[player->index_nr] = player_action;
-#endif
-  }
-  else
-  {
-    /* no actions for this player (no input at player's configured device) */
+      can_change[xx][yy] = TRUE;
 
-    DigField(player, 0, 0, 0, 0, DF_NO_PUSH);
-    SnapField(player, 0, 0);
-    CheckGravityMovement(player);
+      if (ex == x && ey == y)	/* do not check changing element itself */
+	continue;
 
-#if 1
-    if (player->MovPos == 0)	/* needed for tape.playing */
-      player->is_moving = FALSE;
-#endif
-#if 0
-    if (player->MovPos == 0)	/* needed for tape.playing */
-      player->last_move_dir = MV_NO_MOVING;
+      if (change->content[xx][yy] == EL_EMPTY_SPACE)
+      {
+	can_change[xx][yy] = FALSE;	/* do not change empty borders */
 
-    /* !!! CHECK THIS AGAIN !!!
-       (Seems to be needed for some EL_ROBOT stuff, but breaks
-       tapes when walking through pipes!)
-    */
+	continue;
+      }
 
-    /* it seems that "player->last_move_dir" is misused as some sort of
-       "player->is_just_moving_in_this_moment", which is needed for the
-       robot stuff (robots don't kill players when they are moving)
-    */
-#endif 
+      if (!IN_LEV_FIELD(ex, ey))
+      {
+	can_change[xx][yy] = FALSE;
+	complete_change = FALSE;
 
-    /* if the player does not move for some time, reset animation to start */
-    if (++player->frame_reset_delay > player->move_delay_value)
-      player->Frame = 0;
-  }
+	continue;
+      }
 
-#if 0
-  if (tape.recording && num_stored_actions >= MAX_PLAYERS && save_tape_entry)
-  {
-    TapeRecordAction(stored_player_action);
-    num_stored_actions = 0;
-    save_tape_entry = FALSE;
-  }
-#else
-  if (tape.recording && num_stored_actions >= MAX_PLAYERS)
-  {
-    TapeRecordAction(stored_player_action);
-    num_stored_actions = 0;
-  }
-#endif
+      e = Feld[ex][ey];
 
-#if 0
-  if (tape.playing && !tape.pausing && !player_action &&
-      tape.counter < tape.length)
-  {
-    int jx = player->jx, jy = player->jy;
-    int next_joy =
-      tape.pos[tape.counter].action[player->index_nr] & (JOY_LEFT|JOY_RIGHT);
+      if (IS_MOVING(ex, ey) || IS_BLOCKED(ex, ey))
+	e = MovingOrBlocked2Element(ex, ey);
+
+      half_destructible = (IS_FREE(ex, ey) || IS_DIGGABLE(e));
+
+      if ((change->power <= CP_NON_DESTRUCTIVE  && !IS_FREE(ex, ey)) ||
+	  (change->power <= CP_HALF_DESTRUCTIVE && !half_destructible) ||
+	  (change->power <= CP_FULL_DESTRUCTIVE && IS_INDESTRUCTIBLE(e)))
+      {
+	can_change[xx][yy] = FALSE;
+	complete_change = FALSE;
+      }
+    }
 
-    if ((next_joy == JOY_LEFT || next_joy == JOY_RIGHT) &&
-	(player->MovDir != JOY_UP && player->MovDir != JOY_DOWN))
+    if (!change->only_complete || complete_change)
     {
-      int dx = (next_joy == JOY_LEFT ? -1 : +1);
+      boolean something_has_changed = FALSE;
 
-      if (IN_LEV_FIELD(jx+dx, jy) && IS_PUSHABLE(Feld[jx+dx][jy]))
+      if (change->only_complete && change->use_random_change &&
+	  RND(100) < change->random)
+	return FALSE;
+
+      for (yy = 0; yy < 3; yy++) for (xx = 0; xx < 3 ; xx++)
       {
-	int el = Feld[jx+dx][jy];
-	int push_delay = (IS_SB_ELEMENT(el) || el == EL_SATELLITE ? 2 :
-			  (el == EL_BALLOON || el == EL_SPRING) ? 0 : 10);
+	int ex = x + xx - 1;
+	int ey = y + yy - 1;
 
-	if (tape.delay_played + push_delay >= tape.pos[tape.counter].delay)
+	if (can_change[xx][yy] && (!change->use_random_change ||
+				   RND(100) < change->random))
 	{
-	  player->MovDir = next_joy;
-	  player->Frame = FrameCounter % 4;
-	  player->Pushing = TRUE;
+	  if (IS_MOVING(ex, ey) || IS_BLOCKED(ex, ey))
+	    RemoveMovingField(ex, ey);
+
+	  ChangeEvent[ex][ey] = ChangeEvent[x][y];
+
+	  ChangeElementNowExt(ex, ey, change->content[xx][yy]);
+
+	  something_has_changed = TRUE;
+
+	  /* for symmetry reasons, freeze newly created border elements */
+	  if (ex != x || ey != y)
+	    Stop[ex][ey] = TRUE;	/* no more moving in this frame */
 	}
       }
+
+      if (something_has_changed)
+	PlayLevelSoundElementAction(x, y, element, ACTION_CHANGING);
     }
   }
-#endif
+  else
+  {
+    ChangeElementNowExt(x, y, change->target_element);
+
+    PlayLevelSoundElementAction(x, y, element, ACTION_CHANGING);
+  }
+
+  return TRUE;
 }
 
-void GameActions()
+static void ChangeElement(int x, int y, int page)
 {
-  static unsigned long action_delay = 0;
-  unsigned long action_delay_value;
-  int magic_wall_x = 0, magic_wall_y = 0;
-  int i, x, y, element, graphic;
-  byte *recorded_player_action;
-  byte summarized_player_action = 0;
+  int element = MovingOrBlocked2Element(x, y);
+  struct ElementInfo *ei = &element_info[element];
+  struct ElementChangeInfo *change = &ei->change_page[page];
 
-  if (game_status != PLAYING)
-    return;
+#if 0
+#ifdef DEBUG
+  if (!CAN_CHANGE(element))
+  {
+    printf("\n\n");
+    printf("ChangeElement(): %d,%d: element = %d ('%s')\n",
+	   x, y, element, element_info[element].token_name);
+    printf("ChangeElement(): This should never happen!\n");
+    printf("\n\n");
+  }
+#endif
+#endif
 
-  action_delay_value =
-    (tape.playing && tape.fast_forward ? FfwdFrameDelay : GameFrameDelay);
+  if (ChangeDelay[x][y] == 0)		/* initialize element change */
+  {
+    ChangeDelay[x][y] = (    change->delay_fixed  * change->delay_frames +
+			 RND(change->delay_random * change->delay_frames)) + 1;
 
-  if (tape.playing && tape.index_search && !tape.pausing)
-    action_delay_value = 0;
+    ResetGfxAnimation(x, y);
+    ResetRandomAnimationValue(x, y);
 
-  /* ---------- main game synchronization point ---------- */
+    if (change->pre_change_function)
+      change->pre_change_function(x, y);
+  }
 
-  WaitUntilDelayReached(&action_delay, action_delay_value);
+  ChangeDelay[x][y]--;
 
-  if (network_playing && !network_player_action_received)
+  if (ChangeDelay[x][y] != 0)		/* continue element change */
   {
-    /*
-#ifdef DEBUG
-    printf("DEBUG: try to get network player actions in time\n");
-#endif
-    */
+    int graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
 
-#if defined(PLATFORM_UNIX)
-    /* last chance to get network player actions without main loop delay */
-    HandleNetworking();
-#endif
+    if (IS_ANIMATED(graphic))
+      DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
 
-    if (game_status != PLAYING)
-      return;
+    if (change->change_function)
+      change->change_function(x, y);
+  }
+  else					/* finish element change */
+  {
+    if (ChangePage[x][y] != -1)		/* remember page from delayed change */
+    {
+      page = ChangePage[x][y];
+      ChangePage[x][y] = -1;
+    }
 
-    if (!network_player_action_received)
+    if (IS_MOVING(x, y))		/* never change a running system ;-) */
     {
-      /*
-#ifdef DEBUG
-      printf("DEBUG: failed to get network player actions in time\n");
-#endif
-      */
+      ChangeDelay[x][y] = 1;		/* try change after next move step */
+      ChangePage[x][y] = page;		/* remember page to use for change */
+
       return;
     }
+
+    if (ChangeElementNow(x, y, element, page))
+    {
+      if (change->post_change_function)
+	change->post_change_function(x, y);
+    }
   }
+}
 
-  if (tape.pausing)
-    return;
+static boolean CheckTriggeredElementSideChange(int lx, int ly,
+					       int trigger_element,
+					       int trigger_side,
+					       int trigger_event)
+{
+  int i, j, x, y;
 
-  recorded_player_action = (tape.playing ? TapePlayAction() : NULL);
+  if (!(trigger_events[trigger_element] & CH_EVENT_BIT(trigger_event)))
+    return FALSE;
 
-  for (i=0; i<MAX_PLAYERS; i++)
+  for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
   {
-    summarized_player_action |= stored_player[i].action;
+    int element = EL_CUSTOM_START + i;
 
-    if (!network_playing)
-      stored_player[i].effective_action = stored_player[i].action;
-  }
+    boolean change_element = FALSE;
+    int page = 0;
 
-#if defined(PLATFORM_UNIX)
-  if (network_playing)
-    SendToServer_MovePlayer(summarized_player_action);
+    if (!CAN_CHANGE(element) || !HAS_ANY_CHANGE_EVENT(element, trigger_event))
+      continue;
+
+    for (j = 0; j < element_info[element].num_change_pages; j++)
+    {
+      struct ElementChangeInfo *change = &element_info[element].change_page[j];
+
+      if (change->can_change &&
+#if 1
+	  change->events & CH_EVENT_BIT(trigger_event) &&
+#endif
+	  change->sides & trigger_side &&
+	  change->trigger_element == trigger_element)
+      {
+#if 0
+	if (!(change->events & CH_EVENT_BIT(trigger_event)))
+	  printf("::: !!! %d triggers %d: using wrong page %d [event %d]\n",
+		 trigger_element-EL_CUSTOM_START+1, i+1, j, trigger_event);
 #endif
 
-  if (!options.network && !setup.team_mode)
-    local_player->effective_action = summarized_player_action;
+	change_element = TRUE;
+	page = j;
 
-  for (i=0; i<MAX_PLAYERS; i++)
-  {
-    int actual_player_action = stored_player[i].effective_action;
+	break;
+      }
+    }
 
-    if (stored_player[i].programmed_action)
-      actual_player_action = stored_player[i].programmed_action;
+    if (!change_element)
+      continue;
 
-    if (recorded_player_action)
-      actual_player_action = recorded_player_action[i];
+    for (y = 0; y < lev_fieldy; y++) for (x = 0; x < lev_fieldx; x++)
+    {
+#if 0
+      if (x == lx && y == ly)	/* do not change trigger element itself */
+	continue;
+#endif
 
-    PlayerActions(&stored_player[i], actual_player_action);
-    ScrollFigure(&stored_player[i], SCROLL_GO_ON);
+      if (Feld[x][y] == element)
+      {
+	ChangeDelay[x][y] = 1;
+	ChangeEvent[x][y] = CH_EVENT_BIT(trigger_event);
+	ChangeElement(x, y, page);
+      }
+    }
   }
 
-  network_player_action_received = FALSE;
-
-  ScrollScreen(NULL, SCROLL_GO_ON);
+  return TRUE;
+}
 
+static boolean CheckTriggeredElementChange(int lx, int ly, int trigger_element,
+					   int trigger_event)
+{
+  return CheckTriggeredElementSideChange(lx, ly, trigger_element, CH_SIDE_ANY,
+					 trigger_event);
+}
 
+static boolean CheckElementSideChange(int x, int y, int element, int side,
+				      int trigger_event, int page)
+{
+  if (!CAN_CHANGE(element) || !HAS_ANY_CHANGE_EVENT(element, trigger_event))
+    return FALSE;
 
-#ifdef DEBUG
-#if 0
-  if (TimeFrames == 0 && local_player->active)
+  if (Feld[x][y] == EL_BLOCKED)
   {
-    extern unsigned int last_RND();
-
-    printf("DEBUG: %03d last RND was %d \t [state checksum is %d]\n",
-	   TimePlayed, last_RND(), getStateCheckSum(TimePlayed));
+    Blocked2Moving(x, y, &x, &y);
+    element = Feld[x][y];
   }
-#endif
-#endif
 
-#ifdef DEBUG
-#if 0
-  if (GameFrameDelay >= 500)
-    printf("FrameCounter == %d\n", FrameCounter);
-#endif
-#endif
+  if (page < 0)
+    page = element_info[element].event_page_nr[trigger_event];
 
-  FrameCounter++;
-  TimeFrames++;
+  if (!(element_info[element].change_page[page].sides & side))
+    return FALSE;
+
+  ChangeDelay[x][y] = 1;
+  ChangeEvent[x][y] = CH_EVENT_BIT(trigger_event);
+  ChangeElement(x, y, page);
+
+  return TRUE;
+}
+
+static boolean CheckElementChange(int x, int y, int element, int trigger_event)
+{
+  return CheckElementSideChange(x, y, element, CH_SIDE_ANY, trigger_event, -1);
+}
+
+static void PlayPlayerSound(struct PlayerInfo *player)
+{
+  int jx = player->jx, jy = player->jy;
+  int element = player->element_nr;
+  int last_action = player->last_action_waiting;
+  int action = player->action_waiting;
+
+  if (player->is_waiting)
+  {
+    if (action != last_action)
+      PlayLevelSoundElementAction(jx, jy, element, action);
+    else
+      PlayLevelSoundElementActionIfLoop(jx, jy, element, action);
+  }
+  else
+  {
+    if (action != last_action)
+      StopSound(element_info[element].sound[last_action]);
+
+    if (last_action == ACTION_SLEEPING)
+      PlayLevelSoundElementAction(jx, jy, element, ACTION_AWAKENING);
+  }
+}
+
+static void PlayAllPlayersSound()
+{
+  int i;
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+    if (stored_player[i].active)
+      PlayPlayerSound(&stored_player[i]);
+}
+
+static void SetPlayerWaiting(struct PlayerInfo *player, boolean is_waiting)
+{
+  boolean last_waiting = player->is_waiting;
+  int move_dir = player->MovDir;
+
+  player->last_action_waiting = player->action_waiting;
+
+  if (is_waiting)
+  {
+    if (!last_waiting)		/* not waiting -> waiting */
+    {
+      player->is_waiting = TRUE;
+
+      player->frame_counter_bored =
+	FrameCounter +
+	game.player_boring_delay_fixed +
+	SimpleRND(game.player_boring_delay_random);
+      player->frame_counter_sleeping =
+	FrameCounter +
+	game.player_sleeping_delay_fixed +
+	SimpleRND(game.player_sleeping_delay_random);
+
+      InitPlayerGfxAnimation(player, ACTION_WAITING, player->MovDir);
+    }
+
+    if (game.player_sleeping_delay_fixed +
+	game.player_sleeping_delay_random > 0 &&
+	player->anim_delay_counter == 0 &&
+	player->post_delay_counter == 0 &&
+	FrameCounter >= player->frame_counter_sleeping)
+      player->is_sleeping = TRUE;
+    else if (game.player_boring_delay_fixed +
+	     game.player_boring_delay_random > 0 &&
+	     FrameCounter >= player->frame_counter_bored)
+      player->is_bored = TRUE;
+
+    player->action_waiting = (player->is_sleeping ? ACTION_SLEEPING :
+			      player->is_bored ? ACTION_BORING :
+			      ACTION_WAITING);
+
+    if (player->is_sleeping)
+    {
+      if (player->num_special_action_sleeping > 0)
+      {
+	if (player->anim_delay_counter == 0 && player->post_delay_counter == 0)
+	{
+	  int last_special_action = player->special_action_sleeping;
+	  int num_special_action = player->num_special_action_sleeping;
+	  int special_action =
+	    (last_special_action == ACTION_DEFAULT ? ACTION_SLEEPING_1 :
+	     last_special_action == ACTION_SLEEPING ? ACTION_SLEEPING :
+	     last_special_action < ACTION_SLEEPING_1 + num_special_action - 1 ?
+	     last_special_action + 1 : ACTION_SLEEPING);
+	  int special_graphic =
+	    el_act_dir2img(player->element_nr, special_action, move_dir);
+
+	  player->anim_delay_counter =
+	    graphic_info[special_graphic].anim_delay_fixed +
+	    SimpleRND(graphic_info[special_graphic].anim_delay_random);
+	  player->post_delay_counter =
+	    graphic_info[special_graphic].post_delay_fixed +
+	    SimpleRND(graphic_info[special_graphic].post_delay_random);
+
+	  player->special_action_sleeping = special_action;
+	}
+
+	if (player->anim_delay_counter > 0)
+	{
+	  player->action_waiting = player->special_action_sleeping;
+	  player->anim_delay_counter--;
+	}
+	else if (player->post_delay_counter > 0)
+	{
+	  player->post_delay_counter--;
+	}
+      }
+    }
+    else if (player->is_bored)
+    {
+      if (player->num_special_action_bored > 0)
+      {
+	if (player->anim_delay_counter == 0 && player->post_delay_counter == 0)
+	{
+	  int special_action =
+	    ACTION_BORING_1 + SimpleRND(player->num_special_action_bored);
+	  int special_graphic =
+	    el_act_dir2img(player->element_nr, special_action, move_dir);
+
+	  player->anim_delay_counter =
+	    graphic_info[special_graphic].anim_delay_fixed +
+	    SimpleRND(graphic_info[special_graphic].anim_delay_random);
+	  player->post_delay_counter =
+	    graphic_info[special_graphic].post_delay_fixed +
+	    SimpleRND(graphic_info[special_graphic].post_delay_random);
+
+	  player->special_action_bored = special_action;
+	}
+
+	if (player->anim_delay_counter > 0)
+	{
+	  player->action_waiting = player->special_action_bored;
+	  player->anim_delay_counter--;
+	}
+	else if (player->post_delay_counter > 0)
+	{
+	  player->post_delay_counter--;
+	}
+      }
+    }
+  }
+  else if (last_waiting)	/* waiting -> not waiting */
+  {
+    player->is_waiting = FALSE;
+    player->is_bored = FALSE;
+    player->is_sleeping = FALSE;
+
+    player->frame_counter_bored = -1;
+    player->frame_counter_sleeping = -1;
+
+    player->anim_delay_counter = 0;
+    player->post_delay_counter = 0;
+
+    player->action_waiting = ACTION_DEFAULT;
+
+    player->special_action_bored = ACTION_DEFAULT;
+    player->special_action_sleeping = ACTION_DEFAULT;
+  }
+}
+
+#if 1
+static byte PlayerActions(struct PlayerInfo *player, byte player_action)
+{
+#if 0
+  static byte stored_player_action[MAX_PLAYERS];
+  static int num_stored_actions = 0;
+#endif
+  boolean moved = FALSE, snapped = FALSE, dropped = FALSE;
+  int left	= player_action & JOY_LEFT;
+  int right	= player_action & JOY_RIGHT;
+  int up	= player_action & JOY_UP;
+  int down	= player_action & JOY_DOWN;
+  int button1	= player_action & JOY_BUTTON_1;
+  int button2	= player_action & JOY_BUTTON_2;
+  int dx	= (left ? -1	: right ? 1	: 0);
+  int dy	= (up   ? -1	: down  ? 1	: 0);
+
+#if 0
+  stored_player_action[player->index_nr] = 0;
+  num_stored_actions++;
+#endif
+
+#if 0
+  printf("::: player %d [%d]\n", player->index_nr, FrameCounter);
+#endif
+
+  if (!player->active || tape.pausing)
+    return 0;
+
+  if (player_action)
+  {
+#if 0
+    printf("::: player %d acts [%d]\n", player->index_nr, FrameCounter);
+#endif
+
+    if (button1)
+      snapped = SnapField(player, dx, dy);
+    else
+    {
+      if (button2)
+	dropped = DropElement(player);
+
+      moved = MovePlayer(player, dx, dy);
+    }
+
+    if (tape.single_step && tape.recording && !tape.pausing)
+    {
+      if (button1 || (dropped && !moved))
+      {
+	TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
+	SnapField(player, 0, 0);		/* stop snapping */
+      }
+    }
+
+    SetPlayerWaiting(player, FALSE);
+
+#if 1
+    return player_action;
+#else
+    stored_player_action[player->index_nr] = player_action;
+#endif
+  }
+  else
+  {
+#if 0
+    printf("::: player %d waits [%d]\n", player->index_nr, FrameCounter);
+#endif
+
+    /* no actions for this player (no input at player's configured device) */
+
+    DigField(player, 0, 0, 0, 0, DF_NO_PUSH);
+    SnapField(player, 0, 0);
+    CheckGravityMovement(player);
+
+    if (player->MovPos == 0)
+      SetPlayerWaiting(player, TRUE);
+
+    if (player->MovPos == 0)	/* needed for tape.playing */
+      player->is_moving = FALSE;
+
+    return 0;
+  }
+
+#if 0
+  if (tape.recording && num_stored_actions >= MAX_PLAYERS)
+  {
+    printf("::: player %d recorded [%d]\n", player->index_nr, FrameCounter);
+
+    TapeRecordAction(stored_player_action);
+    num_stored_actions = 0;
+  }
+#endif
+}
+
+#else
+
+static void PlayerActions(struct PlayerInfo *player, byte player_action)
+{
+  static byte stored_player_action[MAX_PLAYERS];
+  static int num_stored_actions = 0;
+  boolean moved = FALSE, snapped = FALSE, dropped = FALSE;
+  int left	= player_action & JOY_LEFT;
+  int right	= player_action & JOY_RIGHT;
+  int up	= player_action & JOY_UP;
+  int down	= player_action & JOY_DOWN;
+  int button1	= player_action & JOY_BUTTON_1;
+  int button2	= player_action & JOY_BUTTON_2;
+  int dx	= (left ? -1	: right ? 1	: 0);
+  int dy	= (up   ? -1	: down  ? 1	: 0);
+
+  stored_player_action[player->index_nr] = 0;
+  num_stored_actions++;
+
+  printf("::: player %d [%d]\n", player->index_nr, FrameCounter);
+
+  if (!player->active || tape.pausing)
+    return;
+
+  if (player_action)
+  {
+    printf("::: player %d acts [%d]\n", player->index_nr, FrameCounter);
+
+    if (button1)
+      snapped = SnapField(player, dx, dy);
+    else
+    {
+      if (button2)
+	dropped = DropElement(player);
+
+      moved = MovePlayer(player, dx, dy);
+    }
+
+    if (tape.single_step && tape.recording && !tape.pausing)
+    {
+      if (button1 || (dropped && !moved))
+      {
+	TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
+	SnapField(player, 0, 0);		/* stop snapping */
+      }
+    }
+
+    stored_player_action[player->index_nr] = player_action;
+  }
+  else
+  {
+    printf("::: player %d waits [%d]\n", player->index_nr, FrameCounter);
+
+    /* no actions for this player (no input at player's configured device) */
+
+    DigField(player, 0, 0, 0, 0, DF_NO_PUSH);
+    SnapField(player, 0, 0);
+    CheckGravityMovement(player);
+
+    if (player->MovPos == 0)
+      InitPlayerGfxAnimation(player, ACTION_DEFAULT, player->MovDir);
+
+    if (player->MovPos == 0)	/* needed for tape.playing */
+      player->is_moving = FALSE;
+  }
+
+  if (tape.recording && num_stored_actions >= MAX_PLAYERS)
+  {
+    printf("::: player %d recorded [%d]\n", player->index_nr, FrameCounter);
+
+    TapeRecordAction(stored_player_action);
+    num_stored_actions = 0;
+  }
+}
+#endif
+
+void GameActions()
+{
+  static unsigned long action_delay = 0;
+  unsigned long action_delay_value;
+  int magic_wall_x = 0, magic_wall_y = 0;
+  int i, x, y, element, graphic;
+  byte *recorded_player_action;
+  byte summarized_player_action = 0;
+#if 1
+  byte tape_action[MAX_PLAYERS];
+#endif
+
+  if (game_status != GAME_MODE_PLAYING)
+    return;
+
+  action_delay_value =
+    (tape.playing && tape.fast_forward ? FfwdFrameDelay : GameFrameDelay);
+
+  if (tape.playing && tape.index_search && !tape.pausing)
+    action_delay_value = 0;
+
+  /* ---------- main game synchronization point ---------- */
+
+  WaitUntilDelayReached(&action_delay, action_delay_value);
+
+  if (network_playing && !network_player_action_received)
+  {
+    /*
+#ifdef DEBUG
+    printf("DEBUG: try to get network player actions in time\n");
+#endif
+    */
+
+#if defined(PLATFORM_UNIX)
+    /* last chance to get network player actions without main loop delay */
+    HandleNetworking();
+#endif
+
+    if (game_status != GAME_MODE_PLAYING)
+      return;
+
+    if (!network_player_action_received)
+    {
+      /*
+#ifdef DEBUG
+      printf("DEBUG: failed to get network player actions in time\n");
+#endif
+      */
+      return;
+    }
+  }
+
+  if (tape.pausing)
+    return;
+
+#if 0
+  printf("::: getting new tape action [%d]\n", FrameCounter);
+#endif
+
+  recorded_player_action = (tape.playing ? TapePlayAction() : NULL);
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+  {
+    summarized_player_action |= stored_player[i].action;
+
+    if (!network_playing)
+      stored_player[i].effective_action = stored_player[i].action;
+  }
+
+#if defined(PLATFORM_UNIX)
+  if (network_playing)
+    SendToServer_MovePlayer(summarized_player_action);
+#endif
+
+  if (!options.network && !setup.team_mode)
+    local_player->effective_action = summarized_player_action;
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+  {
+    int actual_player_action = stored_player[i].effective_action;
+
+    if (stored_player[i].programmed_action)
+      actual_player_action = stored_player[i].programmed_action;
+
+    if (recorded_player_action)
+      actual_player_action = recorded_player_action[i];
+
+    tape_action[i] = PlayerActions(&stored_player[i], actual_player_action);
+
+    if (tape.recording && tape_action[i] && !tape.player_participates[i])
+      tape.player_participates[i] = TRUE;    /* player just appeared from CE */
+
+    ScrollPlayer(&stored_player[i], SCROLL_GO_ON);
+  }
+
+#if 1
+  if (tape.recording)
+    TapeRecordAction(tape_action);
+#endif
+
+  network_player_action_received = FALSE;
+
+  ScrollScreen(NULL, SCROLL_GO_ON);
+
+#if 0
+  FrameCounter++;
+  TimeFrames++;
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+    stored_player[i].Frame++;
+#endif
+
+#if 1
+  if (game.engine_version < VERSION_IDENT(2,2,0,7))
+  {
+    for (i = 0; i < MAX_PLAYERS; i++)
+    {
+      struct PlayerInfo *player = &stored_player[i];
+      int x = player->jx;
+      int y = player->jy;
+
+      if (player->active && player->is_pushing && player->is_moving &&
+	  IS_MOVING(x, y))
+      {
+	ContinueMoving(x, y);
+
+	/* continue moving after pushing (this is actually a bug) */
+	if (!IS_MOVING(x, y))
+	{
+	  Stop[x][y] = FALSE;
+	}
+      }
+    }
+  }
+#endif
+
+  for (y = 0; y < lev_fieldy; y++) for (x = 0; x < lev_fieldx; x++)
+  {
+    Changed[x][y] = CE_BITMASK_DEFAULT;
+    ChangeEvent[x][y] = CE_BITMASK_DEFAULT;
+
+#if DEBUG
+    if (ChangePage[x][y] != -1 && ChangeDelay[x][y] != 1)
+    {
+      printf("GameActions(): x = %d, y = %d: ChangePage != -1\n", x, y);
+      printf("GameActions(): This should never happen!\n");
+
+      ChangePage[x][y] = -1;
+    }
+#endif
 
-  for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
-  {
     Stop[x][y] = FALSE;
-    if (JustStopped[x][y] > 0)
-      JustStopped[x][y]--;
+    if (WasJustMoving[x][y] > 0)
+      WasJustMoving[x][y]--;
+    if (WasJustFalling[x][y] > 0)
+      WasJustFalling[x][y]--;
 
     GfxFrame[x][y]++;
 
+#if 1
+    /* reset finished pushing action (not done in ContinueMoving() to allow
+       continous pushing animation for elements with zero push delay) */
+    if (GfxAction[x][y] == ACTION_PUSHING && !IS_MOVING(x, y))
+    {
+      ResetGfxAnimation(x, y);
+      DrawLevelField(x, y);
+    }
+#endif
+
 #if DEBUG
     if (IS_BLOCKED(x, y))
     {
@@ -4700,15 +6694,26 @@ void GameActions()
 #endif
   }
 
-  for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+  for (y = 0; y < lev_fieldy; y++) for (x = 0; x < lev_fieldx; x++)
   {
     element = Feld[x][y];
+#if 1
+    graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
+#else
     graphic = el2img(element);
+#endif
+
+#if 0
+    if (element == -1)
+    {
+      printf("::: %d,%d: %d [%d]\n", x, y, element, FrameCounter);
+
+      element = graphic = 0;
+    }
+#endif
 
-#if 1
     if (graphic_info[graphic].anim_global_sync)
       GfxFrame[x][y] = FrameCounter;
-#endif
 
     if (ANIM_MODE(graphic) == ANIM_RANDOM &&
 	IS_NEXT_FRAME(GfxFrame[x][y], graphic))
@@ -4716,31 +6721,78 @@ void GameActions()
 
     SetRandomAnimationValue(x, y);
 
+#if 1
+    PlayLevelSoundActionIfLoop(x, y, GfxAction[x][y]);
+#endif
+
     if (IS_INACTIVE(element))
     {
-
-#if 1
       if (IS_ANIMATED(graphic))
 	DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
-#endif
 
       continue;
     }
 
+#if 1
+    /* this may take place after moving, so 'element' may have changed */
+#if 0
+    if (IS_CHANGING(x, y))
+#else
+    if (IS_CHANGING(x, y) &&
+	(game.engine_version < VERSION_IDENT(3,0,7,1) || !Stop[x][y]))
+#endif
+    {
+#if 0
+      ChangeElement(x, y, ChangePage[x][y] != -1 ? ChangePage[x][y] :
+		    element_info[element].event_page_nr[CE_DELAY]);
+#else
+      ChangeElement(x, y, element_info[element].event_page_nr[CE_DELAY]);
+#endif
+
+      element = Feld[x][y];
+      graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
+    }
+#endif
+
     if (!IS_MOVING(x, y) && (CAN_FALL(element) || CAN_MOVE(element)))
     {
       StartMoving(x, y);
 
+#if 1
+      graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
+#if 0
+      if (element == EL_MOLE)
+	printf("::: %d, %d, %d [%d]\n",
+	       IS_ANIMATED(graphic), IS_MOVING(x, y), Stop[x][y],
+	       GfxAction[x][y]);
+#endif
+#if 0
+      if (element == EL_YAMYAM)
+	printf("::: %d, %d, %d\n",
+	       IS_ANIMATED(graphic), IS_MOVING(x, y), Stop[x][y]);
+#endif
+#endif
+
       if (IS_ANIMATED(graphic) &&
 	  !IS_MOVING(x, y) &&
 	  !Stop[x][y])
+      {
 	DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
 
+#if 0
+	if (element == EL_BUG)
+	  printf("::: %d, %d\n", graphic, GfxFrame[x][y]);
+#endif
+
+#if 0
+	if (element == EL_MOLE)
+	  printf("::: %d, %d\n", graphic, GfxFrame[x][y]);
+#endif
+      }
+
       if (IS_GEM(element) || element == EL_SP_INFOTRON)
 	EdelsteinFunkeln(x, y);
     }
-
-#if 1
     else if ((element == EL_ACID ||
 	      element == EL_EXIT_OPEN ||
 	      element == EL_SP_EXIT_OPEN ||
@@ -4751,8 +6803,6 @@ void GameActions()
 	      element == EL_SHIELD_DEADLY) &&
 	     IS_ANIMATED(graphic))
       DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
-#endif
-
     else if (IS_MOVING(x, y))
       ContinueMoving(x, y);
     else if (IS_ACTIVE_BOMB(element))
@@ -4761,7 +6811,7 @@ void GameActions()
     else if (element == EL_EXPLOSION && !game.explosions_delayed)
       Explode(x, y, ExplodePhase[x][y], EX_NORMAL);
 #endif
-    else if (element == EL_AMOEBA_CREATING)
+    else if (element == EL_AMOEBA_GROWING)
       AmoebeWaechst(x, y);
     else if (element == EL_AMOEBA_SHRINKING)
       AmoebaDisappearing(x, y);
@@ -4771,74 +6821,38 @@ void GameActions()
       AmoebeAbleger(x, y);
 #endif
 
-    else if (element == EL_GAMEOFLIFE || element == EL_BIOMAZE)
+    else if (element == EL_GAME_OF_LIFE || element == EL_BIOMAZE)
       Life(x, y);
-#if 0
-    else if (element == EL_ROBOT_WHEEL_ACTIVE)
-      RobotWheel(x, y);
-    else if (element == EL_TIMEGATE_SWITCH_ACTIVE)
-      TimegateWheel(x, y);
-#endif
-#if 0
-    else if (element == EL_ACID_SPLASH_LEFT ||
-	     element == EL_ACID_SPLASH_RIGHT)
-      SplashAcid(x, y);
-#endif
-#if 0
-    else if (element == EL_NUT_CRACKING)
-      NussKnacken(x, y);
-    else if (element == EL_PEARL_BREAKING)
-      BreakingPearl(x, y);
-#endif
     else if (element == EL_EXIT_CLOSED)
       CheckExit(x, y);
     else if (element == EL_SP_EXIT_CLOSED)
       CheckExitSP(x, y);
-#if 0
-    else if (element == EL_EXIT_OPENING)
-      AusgangstuerOeffnen(x, y);
-#endif
-    else if (element == EL_WALL_GROWING_ACTIVE)
+    else if (element == EL_EXPANDABLE_WALL_GROWING)
       MauerWaechst(x, y);
-    else if (element == EL_WALL_GROWING ||
-	     element == EL_WALL_GROWING_X ||
-	     element == EL_WALL_GROWING_Y ||
-	     element == EL_WALL_GROWING_XY)
+    else if (element == EL_EXPANDABLE_WALL ||
+	     element == EL_EXPANDABLE_WALL_HORIZONTAL ||
+	     element == EL_EXPANDABLE_WALL_VERTICAL ||
+	     element == EL_EXPANDABLE_WALL_ANY)
       MauerAbleger(x, y);
     else if (element == EL_FLAMES)
       CheckForDragon(x, y);
 #if 0
-    else if (element == EL_SP_BUGGY_BASE ||
-	     element == EL_SP_BUGGY_BASE_ACTIVATING ||
-	     element == EL_SP_BUGGY_BASE_ACTIVE)
-      CheckBuggyBase(x, y);
-    else if (element == EL_TRAP ||
-	     element == EL_TRAP_ACTIVE)
-      CheckTrap(x, y);
-    else if (IS_BELT_ACTIVE(element))
-      DrawBeltAnimation(x, y, element);
-    else if (element == EL_SWITCHGATE_OPENING)
-      OpenSwitchgate(x, y);
-    else if (element == EL_SWITCHGATE_CLOSING)
-      CloseSwitchgate(x, y);
-    else if (element == EL_TIMEGATE_OPENING)
-      OpenTimegate(x, y);
-    else if (element == EL_TIMEGATE_CLOSING)
-      CloseTimegate(x, y);
-#endif
-
     else if (IS_AUTO_CHANGING(element))
       ChangeElement(x, y);
-
-#if 1
+#endif
     else if (element == EL_EXPLOSION)
       ;	/* drawing of correct explosion animation is handled separately */
-    else if (IS_ANIMATED(graphic))
+    else if (IS_ANIMATED(graphic) && !IS_CHANGING(x, y))
       DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
+
+#if 0
+    /* this may take place after moving, so 'element' may have changed */
+    if (IS_AUTO_CHANGING(Feld[x][y]))
+      ChangeElement(x, y);
 #endif
 
     if (IS_BELT_ACTIVE(element))
-      PlaySoundLevelAction(x, y, ACTION_ACTIVE);
+      PlayLevelSoundAction(x, y, ACTION_ACTIVE);
 
     if (game.magic_wall_active)
     {
@@ -4878,6 +6892,7 @@ void GameActions()
 #endif
       element = Feld[x][y];
 
+      /* !!! extend EL_SAND to anything diggable (but maybe not SP_BASE) !!! */
       if (!IS_PLAYER(x,y) &&
 	  (element == EL_EMPTY ||
 	   element == EL_SAND ||
@@ -4903,7 +6918,7 @@ void GameActions()
   {
     game.explosions_delayed = FALSE;
 
-    for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+    for (y = 0; y < lev_fieldy; y++) for (x = 0; x < lev_fieldx; x++)
     {
       element = Feld[x][y];
 
@@ -4927,9 +6942,9 @@ void GameActions()
       if (element == EL_BD_MAGIC_WALL_FULL ||
 	  element == EL_BD_MAGIC_WALL_ACTIVE ||
 	  element == EL_BD_MAGIC_WALL_EMPTYING)
-	PlaySoundLevel(magic_wall_x, magic_wall_y, SND_BD_MAGIC_WALL_ACTIVE);
+	PlayLevelSound(magic_wall_x, magic_wall_y, SND_BD_MAGIC_WALL_ACTIVE);
       else
-	PlaySoundLevel(magic_wall_x, magic_wall_y, SND_MAGIC_WALL_ACTIVE);
+	PlayLevelSound(magic_wall_x, magic_wall_y, SND_MAGIC_WALL_ACTIVE);
     }
 
     if (game.magic_wall_time_left > 0)
@@ -4937,7 +6952,7 @@ void GameActions()
       game.magic_wall_time_left--;
       if (!game.magic_wall_time_left)
       {
-	for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+	for (y = 0; y < lev_fieldy; y++) for (x = 0; x < lev_fieldx; x++)
 	{
 	  element = Feld[x][y];
 
@@ -4976,25 +6991,25 @@ void GameActions()
       CloseAllOpenTimegates();
   }
 
-  for (i=0; i<MAX_PLAYERS; i++)
+  for (i = 0; i < MAX_PLAYERS; i++)
   {
     struct PlayerInfo *player = &stored_player[i];
 
     if (SHIELD_ON(player))
     {
       if (player->shield_deadly_time_left)
-	PlaySoundLevel(player->jx, player->jy, SND_SHIELD_DEADLY_ACTIVE);
+	PlayLevelSound(player->jx, player->jy, SND_SHIELD_DEADLY_ACTIVE);
       else if (player->shield_normal_time_left)
-	PlaySoundLevel(player->jx, player->jy, SND_SHIELD_NORMAL_ACTIVE);
+	PlayLevelSound(player->jx, player->jy, SND_SHIELD_NORMAL_ACTIVE);
     }
   }
 
-  if (TimeFrames >= (1000 / GameFrameDelay))
+  if (TimeFrames >= FRAMES_PER_SECOND)
   {
     TimeFrames = 0;
     TimePlayed++;
 
-    for (i=0; i<MAX_PLAYERS; i++)
+    for (i = 0; i < MAX_PLAYERS; i++)
     {
       struct PlayerInfo *player = &stored_player[i];
 
@@ -5015,19 +7030,20 @@ void GameActions()
       TimeLeft--;
 
       if (TimeLeft <= 10 && setup.time_limit)
-	PlaySoundStereo(SND_GAME_RUNNING_OUT_OF_TIME, SOUND_MAX_RIGHT);
+	PlaySoundStereo(SND_GAME_RUNNING_OUT_OF_TIME, SOUND_MIDDLE);
 
-      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FONT_TEXT_2);
 
       if (!TimeLeft && setup.time_limit)
-	for (i=0; i<MAX_PLAYERS; i++)
+	for (i = 0; i < MAX_PLAYERS; i++)
 	  KillHero(&stored_player[i]);
     }
     else if (level.time == 0 && !AllPlayersGone) /* level without time limit */
-      DrawText(DX_TIME, DY_TIME, int2str(TimePlayed, 3), FS_SMALL, FC_YELLOW);
+      DrawText(DX_TIME, DY_TIME, int2str(TimePlayed, 3), FONT_TEXT_2);
   }
 
   DrawAllPlayers();
+  PlayAllPlayersSound();
 
   if (options.debug)			/* calculate frames per second */
   {
@@ -5047,6 +7063,42 @@ void GameActions()
 
     redraw_mask |= REDRAW_FPS;
   }
+
+#if 0
+  if (stored_player[0].jx != stored_player[0].last_jx ||
+      stored_player[0].jy != stored_player[0].last_jy)
+    printf("::: %d, %d, %d, %d, %d\n",
+	   stored_player[0].MovDir,
+	   stored_player[0].MovPos,
+	   stored_player[0].GfxPos,
+	   stored_player[0].Frame,
+	   stored_player[0].StepFrame);
+#endif
+
+#if 1
+  FrameCounter++;
+  TimeFrames++;
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+  {
+    int move_frames =
+      MOVE_DELAY_NORMAL_SPEED /  stored_player[i].move_delay_value;
+
+    stored_player[i].Frame += move_frames;
+
+    if (stored_player[i].MovPos != 0)
+      stored_player[i].StepFrame += move_frames;
+  }
+#endif
+
+#if 1
+  if (local_player->show_envelope != 0 && local_player->MovPos == 0)
+  {
+    ShowEnvelope(local_player->show_envelope - EL_ENVELOPE_1);
+
+    local_player->show_envelope = 0;
+  }
+#endif
 }
 
 static boolean AllPlayersInSight(struct PlayerInfo *player, int x, int y)
@@ -5054,7 +7106,7 @@ static boolean AllPlayersInSight(struct PlayerInfo *player, int x, int y)
   int min_x = x, min_y = y, max_x = x, max_y = y;
   int i;
 
-  for (i=0; i<MAX_PLAYERS; i++)
+  for (i = 0; i < MAX_PLAYERS; i++)
   {
     int jx = stored_player[i].jx, jy = stored_player[i].jy;
 
@@ -5074,7 +7126,7 @@ static boolean AllPlayersInVisibleScreen()
 {
   int i;
 
-  for (i=0; i<MAX_PLAYERS; i++)
+  for (i = 0; i < MAX_PLAYERS; i++)
   {
     int jx = stored_player[i].jx, jy = stored_player[i].jy;
 
@@ -5094,24 +7146,24 @@ void ScrollLevel(int dx, int dy)
   int x, y;
 
   BlitBitmap(drawto_field, drawto_field,
-	     FX + TILEX*(dx == -1) - softscroll_offset,
-	     FY + TILEY*(dy == -1) - softscroll_offset,
-	     SXSIZE - TILEX*(dx!=0) + 2*softscroll_offset,
-	     SYSIZE - TILEY*(dy!=0) + 2*softscroll_offset,
-	     FX + TILEX*(dx == 1) - softscroll_offset,
-	     FY + TILEY*(dy == 1) - softscroll_offset);
+	     FX + TILEX * (dx == -1) - softscroll_offset,
+	     FY + TILEY * (dy == -1) - softscroll_offset,
+	     SXSIZE - TILEX * (dx!=0) + 2 * softscroll_offset,
+	     SYSIZE - TILEY * (dy!=0) + 2 * softscroll_offset,
+	     FX + TILEX * (dx == 1) - softscroll_offset,
+	     FY + TILEY * (dy == 1) - softscroll_offset);
 
   if (dx)
   {
     x = (dx == 1 ? BX1 : BX2);
-    for (y=BY1; y<=BY2; y++)
+    for (y = BY1; y <= BY2; y++)
       DrawScreenField(x, y);
   }
 
   if (dy)
   {
     y = (dy == 1 ? BY1 : BY2);
-    for (x=BX1; x<=BX2; x++)
+    for (x = BX1; x <= BX2; x++)
       DrawScreenField(x, y);
   }
 
@@ -5120,7 +7172,7 @@ void ScrollLevel(int dx, int dy)
 
 static void CheckGravityMovement(struct PlayerInfo *player)
 {
-  if (level.gravity && !player->programmed_action)
+  if (game.gravity && !player->programmed_action)
   {
     int move_dir_vertical = player->action & (MV_UP | MV_DOWN);
     int move_dir_horizontal = player->action & (MV_LEFT | MV_RIGHT);
@@ -5138,19 +7190,43 @@ static void CheckGravityMovement(struct PlayerInfo *player)
       (IN_LEV_FIELD(new_jx, new_jy) &&
        (Feld[new_jx][new_jy] == EL_SP_BASE ||
 	Feld[new_jx][new_jy] == EL_SAND));
+    /* !!! extend EL_SAND to anything diggable !!! */
 
     if (field_under_player_is_free &&
 	!player_is_moving_to_valid_field &&
-	!IS_TUBE(Feld[jx][jy]))
+	!IS_WALKABLE_INSIDE(Feld[jx][jy]))
       player->programmed_action = MV_DOWN;
   }
 }
 
-boolean MoveFigureOneStep(struct PlayerInfo *player,
+/*
+  MovePlayerOneStep()
+  -----------------------------------------------------------------------------
+  dx, dy:		direction (non-diagonal) to try to move the player to
+  real_dx, real_dy:	direction as read from input device (can be diagonal)
+*/
+
+boolean MovePlayerOneStep(struct PlayerInfo *player,
 			  int dx, int dy, int real_dx, int real_dy)
 {
+#if 0
+  static int change_sides[4][2] =
+  {
+    /* enter side        leave side */
+    { CH_SIDE_RIGHT,	CH_SIDE_LEFT	},	/* moving left  */
+    { CH_SIDE_LEFT,	CH_SIDE_RIGHT	},	/* moving right */
+    { CH_SIDE_BOTTOM,	CH_SIDE_TOP	},	/* moving up    */
+    { CH_SIDE_TOP,	CH_SIDE_BOTTOM	}	/* moving down  */
+  };
+  int move_direction = (dx == -1 ? MV_LEFT :
+			dx == +1 ? MV_RIGHT :
+			dy == -1 ? MV_UP :
+			dy == +1 ? MV_DOWN : MV_NO_MOVING);
+  int enter_side = change_sides[MV_DIR_BIT(move_direction)][0];
+  int leave_side = change_sides[MV_DIR_BIT(move_direction)][1];
+#endif
   int jx = player->jx, jy = player->jy;
-  int new_jx = jx+dx, new_jy = jy+dy;
+  int new_jx = jx + dx, new_jy = jy + dy;
   int element;
   int can_move;
 
@@ -5174,12 +7250,12 @@ boolean MoveFigureOneStep(struct PlayerInfo *player,
   element = MovingOrBlocked2ElementIfNotLeaving(new_jx, new_jy);
 #endif
 
-  if (DONT_GO_TO(element))
+  if (DONT_RUN_INTO(element))
   {
     if (element == EL_ACID && dx == 0 && dy == 1)
     {
       SplashAcid(jx, jy);
-      Feld[jx][jy] = EL_PLAYER1;
+      Feld[jx][jy] = EL_PLAYER_1;
       InitMovingField(jx, jy, MV_DOWN);
       Store[jx][jy] = EL_ACID;
       ContinueMoving(jx, jy);
@@ -5195,22 +7271,48 @@ boolean MoveFigureOneStep(struct PlayerInfo *player,
   if (can_move != MF_MOVING)
     return can_move;
 
+  /* check if DigField() has caused relocation of the player */
+  if (player->jx != jx || player->jy != jy)
+    return MF_NO_ACTION;
+
   StorePlayer[jx][jy] = 0;
   player->last_jx = jx;
   player->last_jy = jy;
-  jx = player->jx = new_jx;
-  jy = player->jy = new_jy;
-  StorePlayer[jx][jy] = player->element_nr;
+  player->jx = new_jx;
+  player->jy = new_jy;
+  StorePlayer[new_jx][new_jy] = player->element_nr;
 
   player->MovPos =
     (dx > 0 || dy > 0 ? -1 : 1) * (TILEX - TILEX / player->move_delay_value);
 
-  ScrollFigure(player, SCROLL_INIT);
+  player->step_counter++;
+
+  PlayerVisit[jx][jy] = FrameCounter;
+
+  ScrollPlayer(player, SCROLL_INIT);
+
+#if 0
+  if (IS_CUSTOM_ELEMENT(Feld[jx][jy]))
+  {
+    CheckTriggeredElementSideChange(jx, jy, Feld[jx][jy], leave_side,
+				    CE_OTHER_GETS_LEFT);
+    CheckElementSideChange(jx, jy, Feld[jx][jy], leave_side,
+			   CE_LEFT_BY_PLAYER, -1);
+  }
+
+  if (IS_CUSTOM_ELEMENT(Feld[new_jx][new_jy]))
+  {
+    CheckTriggeredElementSideChange(new_jx, new_jy, Feld[new_jx][new_jy],
+				    enter_side, CE_OTHER_GETS_ENTERED);
+    CheckElementSideChange(new_jx, new_jy, Feld[new_jx][new_jy], enter_side,
+			   CE_ENTERED_BY_PLAYER, -1);
+  }
+#endif
 
   return MF_MOVING;
 }
 
-boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
+boolean MovePlayer(struct PlayerInfo *player, int dx, int dy)
 {
   int jx = player->jx, jy = player->jy;
   int old_jx = jx, old_jy = jy;
@@ -5249,7 +7351,7 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
 
     while (player->MovPos)
     {
-      ScrollFigure(player, SCROLL_GO_ON);
+      ScrollPlayer(player, SCROLL_GO_ON);
       ScrollScreen(NULL, SCROLL_GO_ON);
       FrameCounter++;
       DrawAllPlayers();
@@ -5261,13 +7363,13 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
 
   if (player->last_move_dir & (MV_LEFT | MV_RIGHT))
   {
-    if (!(moved |= MoveFigureOneStep(player, 0, dy, dx, dy)))
-      moved |= MoveFigureOneStep(player, dx, 0, dx, dy);
+    if (!(moved |= MovePlayerOneStep(player, 0, dy, dx, dy)))
+      moved |= MovePlayerOneStep(player, dx, 0, dx, dy);
   }
   else
   {
-    if (!(moved |= MoveFigureOneStep(player, dx, 0, dx, dy)))
-      moved |= MoveFigureOneStep(player, 0, dy, dx, dy);
+    if (!(moved |= MovePlayerOneStep(player, dx, 0, dx, dy)))
+      moved |= MovePlayerOneStep(player, 0, dy, dx, dy);
   }
 
   jx = player->jx;
@@ -5342,14 +7444,16 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
     }
   }
 
-  if (!(moved & MF_MOVING) && !player->Pushing)
-    player->Frame = 0;
-  else
 #if 0
-    player->Frame = (player->Frame + 1) % 4;
+#if 1
+  InitPlayerGfxAnimation(player, ACTION_DEFAULT);
 #else
-    player->Frame += 1 * 0;
+  if (!(moved & MF_MOVING) && !player->is_pushing)
+    player->Frame = 0;
 #endif
+#endif
+
+  player->StepFrame = 0;
 
   if (moved & MF_MOVING)
   {
@@ -5358,10 +7462,55 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
     else if (old_jx == jx && old_jy != jy)
       player->MovDir = (old_jy < jy ? MV_DOWN : MV_UP);
 
-    DrawLevelField(jx, jy);	/* for "DrawCrumbledSand()" */
+    DrawLevelField(jx, jy);	/* for "crumbled sand" */
 
     player->last_move_dir = player->MovDir;
     player->is_moving = TRUE;
+#if 1
+    player->is_snapping = FALSE;
+#endif
+
+#if 1
+    player->is_switching = FALSE;
+#endif
+
+
+#if 1
+    {
+      static int change_sides[4][2] =
+      {
+	/* enter side           leave side */
+	{ CH_SIDE_RIGHT,	CH_SIDE_LEFT	},	/* moving left  */
+	{ CH_SIDE_LEFT,		CH_SIDE_RIGHT	},	/* moving right */
+	{ CH_SIDE_BOTTOM,	CH_SIDE_TOP	},	/* moving up    */
+	{ CH_SIDE_TOP,		CH_SIDE_BOTTOM	}	/* moving down  */
+      };
+      int move_direction = player->MovDir;
+      int enter_side = change_sides[MV_DIR_BIT(move_direction)][0];
+      int leave_side = change_sides[MV_DIR_BIT(move_direction)][1];
+
+#if 1
+      if (IS_CUSTOM_ELEMENT(Feld[old_jx][old_jy]))
+      {
+	CheckTriggeredElementSideChange(old_jx, old_jy, Feld[old_jx][old_jy],
+					leave_side, CE_OTHER_GETS_LEFT);
+	CheckElementSideChange(old_jx, old_jy, Feld[old_jx][old_jy],
+			       leave_side, CE_LEFT_BY_PLAYER, -1);
+      }
+
+      if (IS_CUSTOM_ELEMENT(Feld[jx][jy]))
+      {
+	CheckTriggeredElementSideChange(jx, jy, Feld[jx][jy],
+					enter_side, CE_OTHER_GETS_ENTERED);
+	CheckElementSideChange(jx, jy, Feld[jx][jy],
+			       enter_side, CE_ENTERED_BY_PLAYER, -1);
+      }
+#endif
+
+    }
+#endif
+
+
   }
   else
   {
@@ -5373,7 +7522,11 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
     player->is_moving = FALSE;
   }
 
-  TestIfHeroTouchesBadThing(jx, jy);
+  if (game.engine_version < VERSION_IDENT(3,0,7,0))
+  {
+    TestIfHeroTouchesBadThing(jx, jy);
+    TestIfPlayerTouchesCustomElement(jx, jy);
+  }
 
   if (!player->active)
     RemoveHero(player);
@@ -5381,7 +7534,7 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
   return moved;
 }
 
-void ScrollFigure(struct PlayerInfo *player, int mode)
+void ScrollPlayer(struct PlayerInfo *player, int mode)
 {
   int jx = player->jx, jy = player->jy;
   int last_jx = player->last_jx, last_jy = player->last_jy;
@@ -5394,13 +7547,13 @@ void ScrollFigure(struct PlayerInfo *player, int mode)
   {
     player->actual_frame_counter = FrameCounter;
     player->GfxPos = move_stepsize * (player->MovPos / move_stepsize);
-    if (player->Frame)
-      player->Frame += 1;
 
     if (Feld[last_jx][last_jy] == EL_EMPTY)
       Feld[last_jx][last_jy] = EL_PLAYER_IS_LEAVING;
 
+#if 0
     DrawPlayer(player);
+#endif
     return;
   }
   else if (!FrameReached(&player->actual_frame_counter, 1))
@@ -5408,7 +7561,6 @@ void ScrollFigure(struct PlayerInfo *player, int mode)
 
   player->MovPos += (player->MovPos > 0 ? -1 : 1) * move_stepsize;
   player->GfxPos = move_stepsize * (player->MovPos / move_stepsize);
-  player->Frame += 1;
 
   if (Feld[last_jx][last_jy] == EL_PLAYER_IS_LEAVING)
     Feld[last_jx][last_jy] = EL_EMPTY;
@@ -5417,11 +7569,13 @@ void ScrollFigure(struct PlayerInfo *player, int mode)
   if (player->MovPos == 0)
     CheckGravityMovement(player);
 
-  DrawPlayer(player);
+#if 0
+  DrawPlayer(player);	/* needed here only to cleanup last field */
+#endif
 
-  if (player->MovPos == 0)
+  if (player->MovPos == 0)	/* player reached destination field */
   {
-    if (IS_QUICK_GATE(Feld[last_jx][last_jy]))
+    if (IS_PASSABLE(Feld[last_jx][last_jy]))
     {
       /* continue with normal speed after quickly moving through gate */
       HALVE_PLAYER_SPEED(player);
@@ -5434,15 +7588,29 @@ void ScrollFigure(struct PlayerInfo *player, int mode)
     player->last_jy = jy;
 
     if (Feld[jx][jy] == EL_EXIT_OPEN ||
-	Feld[jx][jy] == EL_SP_EXIT_OPEN)
+	Feld[jx][jy] == EL_SP_EXIT_OPEN ||
+	Feld[jx][jy] == EL_SP_EXIT_OPENING)	/* <-- special case */
     {
+      DrawPlayer(player);	/* needed here only to cleanup last field */
       RemoveHero(player);
 
       if (local_player->friends_still_needed == 0 ||
-	  Feld[jx][jy] == EL_SP_EXIT_OPEN)
+	  IS_SP_ELEMENT(Feld[jx][jy]))
 	player->LevelSolved = player->GameOver = TRUE;
     }
 
+    if (game.engine_version >= VERSION_IDENT(3,0,7,0))
+    {
+      TestIfHeroTouchesBadThing(jx, jy);
+      TestIfPlayerTouchesCustomElement(jx, jy);
+#if 1
+      TestIfElementTouchesCustomElement(jx, jy);	/* for empty space */
+#endif
+
+      if (!player->active)
+	RemoveHero(player);
+    }
+
     if (tape.single_step && tape.recording && !tape.pausing &&
 	!player->programmed_action)
       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
@@ -5477,6 +7645,179 @@ void ScrollScreen(struct PlayerInfo *player, int mode)
     ScreenMovDir = MV_NO_MOVING;
 }
 
+void TestIfPlayerTouchesCustomElement(int x, int y)
+{
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+  static int change_sides[4][2] =
+  {
+    /* center side       border side */
+    { CH_SIDE_TOP,	CH_SIDE_BOTTOM	},	/* check top    */
+    { CH_SIDE_LEFT,	CH_SIDE_RIGHT	},	/* check left   */
+    { CH_SIDE_RIGHT,	CH_SIDE_LEFT	},	/* check right  */
+    { CH_SIDE_BOTTOM,	CH_SIDE_TOP	}	/* check bottom */
+  };
+  static int touch_dir[4] =
+  {
+    MV_LEFT | MV_RIGHT,
+    MV_UP   | MV_DOWN,
+    MV_UP   | MV_DOWN,
+    MV_LEFT | MV_RIGHT
+  };
+  int center_element = Feld[x][y];	/* should always be non-moving! */
+  int i;
+
+  for (i = 0; i < 4; i++)
+  {
+    int xx = x + xy[i][0];
+    int yy = y + xy[i][1];
+    int center_side = change_sides[i][0];
+    int border_side = change_sides[i][1];
+    int border_element;
+
+    if (!IN_LEV_FIELD(xx, yy))
+      continue;
+
+    if (IS_PLAYER(x, y))
+    {
+      if (game.engine_version < VERSION_IDENT(3,0,7,0))
+	border_element = Feld[xx][yy];		/* may be moving! */
+      else if (!IS_MOVING(xx, yy) && !IS_BLOCKED(xx, yy))
+	border_element = Feld[xx][yy];
+      else if (MovDir[xx][yy] & touch_dir[i])	/* elements are touching */
+	border_element = MovingOrBlocked2Element(xx, yy);
+      else
+	continue;		/* center and border element do not touch */
+
+      CheckTriggeredElementSideChange(xx, yy, border_element, border_side,
+				      CE_OTHER_GETS_TOUCHED);
+      CheckElementSideChange(xx, yy, border_element, border_side,
+			     CE_TOUCHED_BY_PLAYER, -1);
+    }
+    else if (IS_PLAYER(xx, yy))
+    {
+      if (game.engine_version >= VERSION_IDENT(3,0,7,0))
+      {
+	struct PlayerInfo *player = PLAYERINFO(xx, yy);
+
+	if (player->MovPos != 0 && !(player->MovDir & touch_dir[i]))
+	  continue;		/* center and border element do not touch */
+      }
+
+      CheckTriggeredElementSideChange(x, y, center_element, center_side,
+				      CE_OTHER_GETS_TOUCHED);
+      CheckElementSideChange(x, y, center_element, center_side,
+			     CE_TOUCHED_BY_PLAYER, -1);
+
+      break;
+    }
+  }
+}
+
+void TestIfElementTouchesCustomElement(int x, int y)
+{
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+  static int change_sides[4][2] =
+  {
+    /* center side	border side */
+    { CH_SIDE_TOP,	CH_SIDE_BOTTOM	},	/* check top    */
+    { CH_SIDE_LEFT,	CH_SIDE_RIGHT	},	/* check left   */
+    { CH_SIDE_RIGHT,	CH_SIDE_LEFT	},	/* check right  */
+    { CH_SIDE_BOTTOM,	CH_SIDE_TOP	}	/* check bottom */
+  };
+  static int touch_dir[4] =
+  {
+    MV_LEFT | MV_RIGHT,
+    MV_UP   | MV_DOWN,
+    MV_UP   | MV_DOWN,
+    MV_LEFT | MV_RIGHT
+  };
+  boolean change_center_element = FALSE;
+  int center_element_change_page = 0;
+  int center_element = Feld[x][y];	/* should always be non-moving! */
+  int i, j;
+
+  for (i = 0; i < 4; i++)
+  {
+    int xx = x + xy[i][0];
+    int yy = y + xy[i][1];
+    int center_side = change_sides[i][0];
+    int border_side = change_sides[i][1];
+    int border_element;
+
+    if (!IN_LEV_FIELD(xx, yy))
+      continue;
+
+    if (game.engine_version < VERSION_IDENT(3,0,7,0))
+      border_element = Feld[xx][yy];	/* may be moving! */
+    else if (!IS_MOVING(xx, yy) && !IS_BLOCKED(xx, yy))
+      border_element = Feld[xx][yy];
+    else if (MovDir[xx][yy] & touch_dir[i])	/* elements are touching */
+      border_element = MovingOrBlocked2Element(xx, yy);
+    else
+      continue;			/* center and border element do not touch */
+
+    /* check for change of center element (but change it only once) */
+    if (IS_CUSTOM_ELEMENT(center_element) &&
+	HAS_ANY_CHANGE_EVENT(center_element, CE_OTHER_IS_TOUCHING) &&
+	!change_center_element)
+    {
+      for (j = 0; j < element_info[center_element].num_change_pages; j++)
+      {
+	struct ElementChangeInfo *change =
+	  &element_info[center_element].change_page[j];
+
+	if (change->can_change &&
+	    change->events & CH_EVENT_BIT(CE_OTHER_IS_TOUCHING) &&
+	    change->sides & border_side &&
+	    change->trigger_element == border_element)
+	{
+	  change_center_element = TRUE;
+	  center_element_change_page = j;
+
+	  break;
+	}
+      }
+    }
+
+    /* check for change of border element */
+    if (IS_CUSTOM_ELEMENT(border_element) &&
+	HAS_ANY_CHANGE_EVENT(border_element, CE_OTHER_IS_TOUCHING))
+    {
+      for (j = 0; j < element_info[border_element].num_change_pages; j++)
+      {
+	struct ElementChangeInfo *change =
+	  &element_info[border_element].change_page[j];
+
+	if (change->can_change &&
+	    change->events & CH_EVENT_BIT(CE_OTHER_IS_TOUCHING) &&
+	    change->sides & center_side &&
+	    change->trigger_element == center_element)
+	{
+	  CheckElementSideChange(xx, yy, border_element, CH_SIDE_ANY,
+				 CE_OTHER_IS_TOUCHING, j);
+	  break;
+	}
+      }
+    }
+  }
+
+  if (change_center_element)
+    CheckElementSideChange(x, y, center_element, CH_SIDE_ANY,
+			   CE_OTHER_IS_TOUCHING, center_element_change_page);
+}
+
 void TestIfGoodThingHitsBadThing(int good_x, int good_y, int good_move_dir)
 {
   int i, kill_x = -1, kill_y = -1;
@@ -5495,7 +7836,7 @@ void TestIfGoodThingHitsBadThing(int good_x, int good_y, int good_move_dir)
     MV_DOWN
   };
 
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
     int test_x, test_y, test_move_dir, test_element;
 
@@ -5513,11 +7854,11 @@ void TestIfGoodThingHitsBadThing(int good_x, int good_y, int good_move_dir)
     test_element = MovingOrBlocked2ElementIfNotLeaving(test_x, test_y);
 #endif
 
-    /* 1st case: good thing is moving towards DONT_GO_TO style bad thing;
+    /* 1st case: good thing is moving towards DONT_RUN_INTO style bad thing;
        2nd case: DONT_TOUCH style bad thing does not move away from good thing
     */
-    if ((DONT_GO_TO(test_element) && good_move_dir == test_dir[i]) ||
-	(DONT_TOUCH(test_element) && test_move_dir != test_dir[i]))
+    if ((DONT_RUN_INTO(test_element) && good_move_dir == test_dir[i]) ||
+	(DONT_TOUCH(test_element)    && test_move_dir != test_dir[i]))
     {
       kill_x = test_x;
       kill_y = test_y;
@@ -5552,6 +7893,13 @@ void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
     { +1, 0 },
     { 0, +1 }
   };
+  static int touch_dir[4] =
+  {
+    MV_LEFT | MV_RIGHT,
+    MV_UP   | MV_DOWN,
+    MV_UP   | MV_DOWN,
+    MV_LEFT | MV_RIGHT
+  };
   static int test_dir[4] =
   {
     MV_UP,
@@ -5563,7 +7911,7 @@ void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
   if (bad_element == EL_EXPLOSION)	/* skip just exploding bad things */
     return;
 
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
     int test_x, test_y, test_move_dir, test_element;
 
@@ -5577,11 +7925,11 @@ void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
 
     test_element = Feld[test_x][test_y];
 
-    /* 1st case: good thing is moving towards DONT_GO_TO style bad thing;
+    /* 1st case: good thing is moving towards DONT_RUN_INTO style bad thing;
        2nd case: DONT_TOUCH style bad thing does not move away from good thing
     */
-    if ((DONT_GO_TO(bad_element) &&  bad_move_dir == test_dir[i]) ||
-	(DONT_TOUCH(bad_element) && test_move_dir != test_dir[i]))
+    if ((DONT_RUN_INTO(bad_element) &&  bad_move_dir == test_dir[i]) ||
+	(DONT_TOUCH(bad_element)    && test_move_dir != test_dir[i]))
     {
       /* good thing is player or penguin that does not move away */
       if (IS_PLAYER(test_x, test_y))
@@ -5591,6 +7939,12 @@ void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
 	if (bad_element == EL_ROBOT && player->is_moving)
 	  continue;	/* robot does not kill player if he is moving */
 
+	if (game.engine_version >= VERSION_IDENT(3,0,7,0))
+	{
+	  if (player->MovPos != 0 && !(player->MovDir & touch_dir[i]))
+	    continue;		/* center and border element do not touch */
+	}
+
 	kill_x = test_x;
 	kill_y = test_y;
 	break;
@@ -5610,24 +7964,6 @@ void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
     {
       struct PlayerInfo *player = PLAYERINFO(kill_x, kill_y);
 
-#if 0
-      int dir = player->MovDir;
-      int newx = player->jx + (dir == MV_LEFT ? -1 : dir == MV_RIGHT ? +1 : 0);
-      int newy = player->jy + (dir == MV_UP   ? -1 : dir == MV_DOWN  ? +1 : 0);
-
-      if (Feld[bad_x][bad_y] == EL_ROBOT && player->is_moving &&
-	  newx != bad_x && newy != bad_y)
-	;	/* robot does not kill player if he is moving */
-      else
-	printf("-> %d\n", player->MovDir);
-
-      if (Feld[bad_x][bad_y] == EL_ROBOT && player->is_moving &&
-	  newx != bad_x && newy != bad_y)
-	;	/* robot does not kill player if he is moving */
-      else
-	;
-#endif
-
       if (player->shield_deadly_time_left > 0)
 	Bang(bad_x, bad_y);
       else if (!PLAYER_PROTECTED(kill_x, kill_y))
@@ -5679,7 +8015,7 @@ void TestIfBadThingTouchesOtherBadThing(int bad_x, int bad_y)
     { 0, +1 }
   };
 
-  for (i=0; i<4; i++)
+  for (i = 0; i < 4; i++)
   {
     int x, y, element;
 
@@ -5689,8 +8025,8 @@ void TestIfBadThingTouchesOtherBadThing(int bad_x, int bad_y)
       continue;
 
     element = Feld[x][y];
-    if (IS_AMOEBOID(element) || element == EL_GAMEOFLIFE ||
-	element == EL_AMOEBA_CREATING || element == EL_AMOEBA_DROP)
+    if (IS_AMOEBOID(element) || element == EL_GAME_OF_LIFE ||
+	element == EL_AMOEBA_GROWING || element == EL_AMOEBA_DROP)
     {
       kill_x = x;
       kill_y = y;
@@ -5709,8 +8045,8 @@ void KillHero(struct PlayerInfo *player)
   if (!player->active)
     return;
 
-  if (IS_PFORTE(Feld[jx][jy]))
-    Feld[jx][jy] = EL_EMPTY;
+  /* remove accessible field at the player's position */
+  Feld[jx][jy] = EL_EMPTY;
 
   /* deactivate shield (else Bang()/Explode() would not work right) */
   player->shield_normal_time_left = 0;
@@ -5733,8 +8069,12 @@ void BuryHero(struct PlayerInfo *player)
   if (!player->active)
     return;
 
-  PlaySoundLevel(jx, jy, SND_PLAYER_DYING);
-  PlaySoundLevel(jx, jy, SND_GAME_LOSING);
+#if 1
+  PlayLevelSoundElementAction(jx, jy, player->element_nr, ACTION_DYING);
+#else
+  PlayLevelSound(jx, jy, SND_CLASS_PLAYER_DYING);
+#endif
+  PlayLevelSound(jx, jy, SND_GAME_LOSING);
 
   player->GameOver = TRUE;
   RemoveHero(player);
@@ -5751,7 +8091,7 @@ void RemoveHero(struct PlayerInfo *player)
   if (!ExplodeField[jx][jy])
     StorePlayer[jx][jy] = 0;
 
-  for (i=0; i<MAX_PLAYERS; i++)
+  for (i = 0; i < MAX_PLAYERS; i++)
     if (stored_player[i].active)
       found = TRUE;
 
@@ -5762,36 +8102,96 @@ void RemoveHero(struct PlayerInfo *player)
   ExitY = ZY = jy;
 }
 
+/*
+  =============================================================================
+  checkDiagonalPushing()
+  -----------------------------------------------------------------------------
+  check if diagonal input device direction results in pushing of object
+  (by checking if the alternative direction is walkable, diggable, ...)
+  =============================================================================
+*/
+
+static boolean checkDiagonalPushing(struct PlayerInfo *player,
+				    int x, int y, int real_dx, int real_dy)
+{
+  int jx, jy, dx, dy, xx, yy;
+
+  if (real_dx == 0 || real_dy == 0)	/* no diagonal direction => push */
+    return TRUE;
+
+  /* diagonal direction: check alternative direction */
+  jx = player->jx;
+  jy = player->jy;
+  dx = x - jx;
+  dy = y - jy;
+  xx = jx + (dx == 0 ? real_dx : 0);
+  yy = jy + (dy == 0 ? real_dy : 0);
+
+  return (!IN_LEV_FIELD(xx, yy) || IS_SOLID_FOR_PUSHING(Feld[xx][yy]));
+}
+
+/*
+  =============================================================================
+  DigField()
+  -----------------------------------------------------------------------------
+  x, y:			field next to player (non-diagonal) to try to dig to
+  real_dx, real_dy:	direction as read from input device (can be diagonal)
+  =============================================================================
+*/
+
 int DigField(struct PlayerInfo *player,
 	     int x, int y, int real_dx, int real_dy, int mode)
 {
+  static int change_sides[4] =
+  {
+    CH_SIDE_RIGHT,	/* moving left  */
+    CH_SIDE_LEFT,	/* moving right */
+    CH_SIDE_BOTTOM,	/* moving up    */
+    CH_SIDE_TOP,	/* moving down  */
+  };
+  boolean use_spring_bug = (game.engine_version < VERSION_IDENT(2,2,0,0));
   int jx = player->jx, jy = player->jy;
   int dx = x - jx, dy = y - jy;
+  int nextx = x + dx, nexty = y + dy;
   int move_direction = (dx == -1 ? MV_LEFT :
 			dx == +1 ? MV_RIGHT :
 			dy == -1 ? MV_UP :
 			dy == +1 ? MV_DOWN : MV_NO_MOVING);
+  int dig_side = change_sides[MV_DIR_BIT(move_direction)];
   int element;
 
   if (player->MovPos == 0)
-    player->Pushing = FALSE;
+  {
+    player->is_digging = FALSE;
+    player->is_collecting = FALSE;
+  }
 
-  if (mode == DF_NO_PUSH)
+  if (player->MovPos == 0)	/* last pushing move finished */
+    player->is_pushing = FALSE;
+
+  if (mode == DF_NO_PUSH)	/* player just stopped pushing */
   {
-    player->Switching = FALSE;
+    player->is_switching = FALSE;
     player->push_delay = 0;
+
     return MF_NO_ACTION;
   }
 
   if (IS_MOVING(x, y) || IS_PLAYER(x, y))
     return MF_NO_ACTION;
 
-  if (IS_TUBE(Feld[jx][jy]))
+#if 0
+  if (IS_TUBE(Feld[jx][jy]) || IS_TUBE(Back[jx][jy]))
+#else
+  if (IS_TUBE(Feld[jx][jy]) ||
+      (IS_TUBE(Back[jx][jy]) && game.engine_version >= VERSION_IDENT(2,2,0,0)))
+#endif
   {
     int i = 0;
+    int tube_element = (IS_TUBE(Feld[jx][jy]) ? Feld[jx][jy] : Back[jx][jy]);
     int tube_leave_directions[][2] =
     {
-      { EL_TUBE_ALL,			MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN },
+      { EL_TUBE_ANY,			MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN },
       { EL_TUBE_VERTICAL,		                     MV_UP | MV_DOWN },
       { EL_TUBE_HORIZONTAL,		MV_LEFT | MV_RIGHT                   },
       { EL_TUBE_VERTICAL_LEFT,		MV_LEFT |            MV_UP | MV_DOWN },
@@ -5805,7 +8205,7 @@ int DigField(struct PlayerInfo *player,
       { -1,                     	MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN }
     };
 
-    while (tube_leave_directions[i][0] != Feld[jx][jy])
+    while (tube_leave_directions[i][0] != tube_element)
     {
       i++;
       if (tube_leave_directions[i][0] == -1)	/* should not happen */
@@ -5818,415 +8218,61 @@ int DigField(struct PlayerInfo *player,
 
   element = Feld[x][y];
 
+  if (mode == DF_SNAP && !IS_SNAPPABLE(element) &&
+      game.engine_version >= VERSION_IDENT(2,2,0,0))
+    return MF_NO_ACTION;
+
   switch (element)
   {
-    case EL_EMPTY:
-    case EL_SAND:
-    case EL_INVISIBLE_SAND:
-    case EL_INVISIBLE_SAND_ACTIVE:
-    case EL_TRAP:
-    case EL_SP_BASE:
-    case EL_SP_BUGGY_BASE:
-    case EL_SP_BUGGY_BASE_ACTIVATING:
-      RemoveField(x, y);
-      PlaySoundLevelElementAction(x, y, element, ACTION_DIGGING);
-      break;
-
-    case EL_EMERALD:
-    case EL_BD_DIAMOND:
-    case EL_EMERALD_YELLOW:
-    case EL_EMERALD_RED:
-    case EL_EMERALD_PURPLE:
-    case EL_DIAMOND:
-    case EL_SP_INFOTRON:
-    case EL_PEARL:
-    case EL_CRYSTAL:
-      RemoveField(x, y);
-      local_player->gems_still_needed -= (element == EL_DIAMOND ? 3 :
-					  element == EL_PEARL ? 5 :
-					  element == EL_CRYSTAL ? 8 : 1);
-      if (local_player->gems_still_needed < 0)
-	local_player->gems_still_needed = 0;
-      RaiseScoreElement(element);
-      DrawText(DX_EMERALDS, DY_EMERALDS,
-	       int2str(local_player->gems_still_needed, 3),
-	       FS_SMALL, FC_YELLOW);
-      PlaySoundLevelElementAction(x, y, element, ACTION_COLLECTING);
-      break;
-
-    case EL_SPEED_PILL:
-      RemoveField(x, y);
-      player->move_delay_value = MOVE_DELAY_HIGH_SPEED;
-      PlaySoundLevel(x, y, SND_SPEED_PILL_COLLECTING);
-      break;
-
-    case EL_ENVELOPE:
-      Feld[x][y] = EL_EMPTY;
-      PlaySoundLevel(x, y, SND_ENVELOPE_COLLECTING);
-      break;
-
-    case EL_EXTRA_TIME:
-      RemoveField(x, y);
-      if (level.time > 0)
-      {
-	TimeLeft += 10;
-	DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
-      }
-      PlaySoundStereo(SND_EXTRA_TIME_COLLECTING, SOUND_MAX_RIGHT);
-      break;
-
-    case EL_SHIELD_NORMAL:
-      RemoveField(x, y);
-      player->shield_normal_time_left += 10;
-      PlaySoundLevel(x, y, SND_SHIELD_NORMAL_COLLECTING);
-      break;
-
-    case EL_SHIELD_DEADLY:
-      RemoveField(x, y);
-      player->shield_normal_time_left += 10;
-      player->shield_deadly_time_left += 10;
-      PlaySoundLevel(x, y, SND_SHIELD_DEADLY_COLLECTING);
-      break;
-
-    case EL_DYNAMITE:
-    case EL_SP_DISK_RED:
-      RemoveField(x, y);
-      player->dynamite++;
-      RaiseScoreElement(EL_DYNAMITE);
-      DrawText(DX_DYNAMITE, DY_DYNAMITE,
-	       int2str(local_player->dynamite, 3),
-	       FS_SMALL, FC_YELLOW);
-      PlaySoundLevelElementAction(x, y, element, ACTION_COLLECTING);
-      break;
-
-    case EL_DYNABOMB_NR:
-      RemoveField(x, y);
-      player->dynabomb_count++;
-      player->dynabombs_left++;
-      RaiseScoreElement(EL_DYNAMITE);
-      PlaySoundLevel(x, y, SND_DYNABOMB_NR_COLLECTING);
-      break;
-
-    case EL_DYNABOMB_SZ:
-      RemoveField(x, y);
-      player->dynabomb_size++;
-      RaiseScoreElement(EL_DYNAMITE);
-      PlaySoundLevel(x, y, SND_DYNABOMB_SZ_COLLECTING);
-      break;
-
-    case EL_DYNABOMB_XL:
-      RemoveField(x, y);
-      player->dynabomb_xl = TRUE;
-      RaiseScoreElement(EL_DYNAMITE);
-      PlaySoundLevel(x, y, SND_DYNABOMB_XL_COLLECTING);
-      break;
-
-    case EL_KEY1:
-    case EL_KEY2:
-    case EL_KEY3:
-    case EL_KEY4:
-    {
-      int key_nr = element - EL_KEY1;
-
-      RemoveField(x, y);
-      player->key[key_nr] = TRUE;
-      RaiseScoreElement(element);
-      DrawMiniGraphicExt(drawto, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
-			 IMG_KEY1 + key_nr);
-      DrawMiniGraphicExt(window, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
-			 IMG_KEY1 + key_nr);
-      PlaySoundLevel(x, y, SND_KEY_COLLECTING);
-      break;
-    }
-
-    case EL_EM_KEY1:
-    case EL_EM_KEY2:
-    case EL_EM_KEY3:
-    case EL_EM_KEY4:
-    {
-      int key_nr = element - EL_EM_KEY1;
-
-      RemoveField(x, y);
-      player->key[key_nr] = TRUE;
-      RaiseScoreElement(element);
-      DrawMiniGraphicExt(drawto, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
-			 IMG_KEY1 + key_nr);
-      DrawMiniGraphicExt(window, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
-			 IMG_KEY1 + key_nr);
-      PlaySoundLevel(x, y, SND_KEY_COLLECTING);
-      break;
-    }
-
-    case EL_ROBOT_WHEEL:
-      Feld[x][y] = EL_ROBOT_WHEEL_ACTIVE;
-      ZX = x;
-      ZY = y;
-      DrawLevelField(x, y);
-      PlaySoundLevel(x, y, SND_ROBOT_WHEEL_ACTIVATING);
-      return MF_ACTION;
-      break;
-
-    case EL_SP_TERMINAL:
-      {
-	int xx, yy;
-
-	PlaySoundLevel(x, y, SND_SP_TERMINAL_ACTIVATING);
-
-	for (yy=0; yy<lev_fieldy; yy++)
-	{
-	  for (xx=0; xx<lev_fieldx; xx++)
-	  {
-	    if (Feld[xx][yy] == EL_SP_DISK_YELLOW)
-	      Bang(xx, yy);
-	    else if (Feld[xx][yy] == EL_SP_TERMINAL)
-	      Feld[xx][yy] = EL_SP_TERMINAL_ACTIVE;
-	  }
-	}
-
-	return MF_ACTION;
-      }
-      break;
-
-    case EL_CONVEYOR_BELT1_SWITCH_LEFT:
-    case EL_CONVEYOR_BELT1_SWITCH_MIDDLE:
-    case EL_CONVEYOR_BELT1_SWITCH_RIGHT:
-    case EL_CONVEYOR_BELT2_SWITCH_LEFT:
-    case EL_CONVEYOR_BELT2_SWITCH_MIDDLE:
-    case EL_CONVEYOR_BELT2_SWITCH_RIGHT:
-    case EL_CONVEYOR_BELT3_SWITCH_LEFT:
-    case EL_CONVEYOR_BELT3_SWITCH_MIDDLE:
-    case EL_CONVEYOR_BELT3_SWITCH_RIGHT:
-    case EL_CONVEYOR_BELT4_SWITCH_LEFT:
-    case EL_CONVEYOR_BELT4_SWITCH_MIDDLE:
-    case EL_CONVEYOR_BELT4_SWITCH_RIGHT:
-      if (!player->Switching)
-      {
-	player->Switching = TRUE;
-	ToggleBeltSwitch(x, y);
-	PlaySoundLevel(x, y, SND_CONVEYOR_BELT_SWITCH_ACTIVATING);
-      }
-      return MF_ACTION;
-      break;
-
-    case EL_SWITCHGATE_SWITCH_UP:
-    case EL_SWITCHGATE_SWITCH_DOWN:
-      if (!player->Switching)
-      {
-	player->Switching = TRUE;
-	ToggleSwitchgateSwitch(x, y);
-	PlaySoundLevel(x, y, SND_SWITCHGATE_SWITCH_ACTIVATING);
-      }
-      return MF_ACTION;
-      break;
-
-    case EL_LIGHT_SWITCH:
-    case EL_LIGHT_SWITCH_ACTIVE:
-      if (!player->Switching)
-      {
-	player->Switching = TRUE;
-	ToggleLightSwitch(x, y);
-	PlaySoundLevel(x, y, element == EL_LIGHT_SWITCH ?
-		       SND_LIGHT_SWITCH_ACTIVATING :
-		       SND_LIGHT_SWITCH_DEACTIVATING);
-      }
-      return MF_ACTION;
-      break;
-
-    case EL_TIMEGATE_SWITCH:
-      ActivateTimegateSwitch(x, y);
-      PlaySoundLevel(x, y, SND_TIMEGATE_SWITCH_ACTIVATING);
-
-      return MF_ACTION;
-      break;
-
-    case EL_BALLOON_SEND_LEFT:
-    case EL_BALLOON_SEND_RIGHT:
-    case EL_BALLOON_SEND_UP:
-    case EL_BALLOON_SEND_DOWN:
-    case EL_BALLOON_SEND_ANY_DIRECTION:
-      if (element == EL_BALLOON_SEND_ANY_DIRECTION)
-	game.balloon_dir = move_direction;
-      else
-	game.balloon_dir = (element == EL_BALLOON_SEND_LEFT  ? MV_LEFT :
-			    element == EL_BALLOON_SEND_RIGHT ? MV_RIGHT :
-			    element == EL_BALLOON_SEND_UP    ? MV_UP :
-			    element == EL_BALLOON_SEND_DOWN  ? MV_DOWN :
-			    MV_NO_MOVING);
-      PlaySoundLevel(x, y, SND_BALLOON_SWITCH_ACTIVATING);
-
-      return MF_ACTION;
-      break;
-
-      /* the following elements cannot be pushed by "snapping" */
-    case EL_ROCK:
-    case EL_BOMB:
-    case EL_DX_SUPABOMB:
-    case EL_NUT:
-    case EL_TIME_ORB_EMPTY:
-    case EL_SP_ZONK:
-    case EL_SP_DISK_ORANGE:
-    case EL_SPRING:
-      if (mode == DF_SNAP)
-	return MF_NO_ACTION;
-
-      /* no "break" -- fall through to next case */
-
-      /* the following elements can be pushed by "snapping" */
-    case EL_BD_ROCK:
-      if (dy)
-	return MF_NO_ACTION;
-
-      player->Pushing = TRUE;
-
-      if (!IN_LEV_FIELD(x+dx, y+dy) || !IS_FREE(x+dx, y+dy))
-	return MF_NO_ACTION;
-
-      if (real_dy)
-      {
-	if (IN_LEV_FIELD(jx, jy+real_dy) && !IS_SOLID(Feld[jx][jy+real_dy]))
-	  return MF_NO_ACTION;
-      }
-
-      if (player->push_delay == 0)
-	player->push_delay = FrameCounter;
-#if 0
-      if (!FrameReached(&player->push_delay, player->push_delay_value) &&
-	  !tape.playing &&
-	  element != EL_SPRING)
-	return MF_NO_ACTION;
-#else
-      if (!FrameReached(&player->push_delay, player->push_delay_value) &&
-	  !(tape.playing && tape.file_version < FILE_VERSION_2_0) &&
-	  element != EL_SPRING)
-	return MF_NO_ACTION;
-#endif
-
-      if (mode == DF_SNAP)
-      {
-	InitMovingField(x, y, move_direction);
-	ContinueMoving(x, y);
-      }
-      else
-      {
-	RemoveField(x, y);
-	Feld[x + dx][y + dy] = element;
-      }
-
-      if (element == EL_SPRING)
-      {
-	Feld[x + dx][y + dy] = EL_SPRING;
-	MovDir[x + dx][y + dy] = move_direction;
-      }
-
-      player->push_delay_value = (element == EL_SPRING ? 0 : 2 + RND(8));
-
-      DrawLevelField(x + dx, y + dy);
-      PlaySoundLevelElementAction(x, y, element, ACTION_PUSHING);
-      break;
-
-    case EL_GATE1:
-    case EL_GATE2:
-    case EL_GATE3:
-    case EL_GATE4:
-      if (!player->key[element - EL_GATE1])
-	return MF_NO_ACTION;
-      break;
-
-    case EL_GATE1_GRAY:
-    case EL_GATE2_GRAY:
-    case EL_GATE3_GRAY:
-    case EL_GATE4_GRAY:
-      if (!player->key[element - EL_GATE1_GRAY])
-	return MF_NO_ACTION;
-      break;
-
-    case EL_EM_GATE1:
-    case EL_EM_GATE2:
-    case EL_EM_GATE3:
-    case EL_EM_GATE4:
-      if (!player->key[element - EL_EM_GATE1])
-	return MF_NO_ACTION;
-      if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
-	return MF_NO_ACTION;
-
-      /* automatically move to the next field with double speed */
-      player->programmed_action = move_direction;
-      DOUBLE_PLAYER_SPEED(player);
-
-      PlaySoundLevel(x, y, SND_GATE_PASSING);
-      break;
-
-    case EL_EM_GATE1_GRAY:
-    case EL_EM_GATE2_GRAY:
-    case EL_EM_GATE3_GRAY:
-    case EL_EM_GATE4_GRAY:
-      if (!player->key[element - EL_EM_GATE1_GRAY])
-	return MF_NO_ACTION;
-      if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
-	return MF_NO_ACTION;
-
-      /* automatically move to the next field with double speed */
-      player->programmed_action = move_direction;
-      DOUBLE_PLAYER_SPEED(player);
-
-      PlaySoundLevel(x, y, SND_GATE_PASSING);
-      break;
-
-    case EL_SWITCHGATE_OPEN:
-    case EL_TIMEGATE_OPEN:
-      if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
-	return MF_NO_ACTION;
-
-      /* automatically move to the next field with double speed */
-      player->programmed_action = move_direction;
-      DOUBLE_PLAYER_SPEED(player);
-
-      PlaySoundLevelElementAction(x, y, element, ACTION_PASSING);
-      break;
-
-    case EL_SP_PORT1_LEFT:
-    case EL_SP_PORT2_LEFT:
-    case EL_SP_PORT1_RIGHT:
-    case EL_SP_PORT2_RIGHT:
-    case EL_SP_PORT1_UP:
-    case EL_SP_PORT2_UP:
-    case EL_SP_PORT1_DOWN:
-    case EL_SP_PORT2_DOWN:
-    case EL_SP_PORT_X:
-    case EL_SP_PORT_Y:
-    case EL_SP_PORT_XY:
+    case EL_SP_PORT_LEFT:
+    case EL_SP_PORT_RIGHT:
+    case EL_SP_PORT_UP:
+    case EL_SP_PORT_DOWN:
+    case EL_SP_PORT_HORIZONTAL:
+    case EL_SP_PORT_VERTICAL:
+    case EL_SP_PORT_ANY:
+    case EL_SP_GRAVITY_PORT_LEFT:
+    case EL_SP_GRAVITY_PORT_RIGHT:
+    case EL_SP_GRAVITY_PORT_UP:
+    case EL_SP_GRAVITY_PORT_DOWN:
       if ((dx == -1 &&
-	   element != EL_SP_PORT1_LEFT &&
-	   element != EL_SP_PORT2_LEFT &&
-	   element != EL_SP_PORT_X &&
-	   element != EL_SP_PORT_XY) ||
+	   element != EL_SP_PORT_LEFT &&
+	   element != EL_SP_GRAVITY_PORT_LEFT &&
+	   element != EL_SP_PORT_HORIZONTAL &&
+	   element != EL_SP_PORT_ANY) ||
 	  (dx == +1 &&
-	   element != EL_SP_PORT1_RIGHT &&
-	   element != EL_SP_PORT2_RIGHT &&
-	   element != EL_SP_PORT_X &&
-	   element != EL_SP_PORT_XY) ||
+	   element != EL_SP_PORT_RIGHT &&
+	   element != EL_SP_GRAVITY_PORT_RIGHT &&
+	   element != EL_SP_PORT_HORIZONTAL &&
+	   element != EL_SP_PORT_ANY) ||
 	  (dy == -1 &&
-	   element != EL_SP_PORT1_UP &&
-	   element != EL_SP_PORT2_UP &&
-	   element != EL_SP_PORT_Y &&
-	   element != EL_SP_PORT_XY) ||
+	   element != EL_SP_PORT_UP &&
+	   element != EL_SP_GRAVITY_PORT_UP &&
+	   element != EL_SP_PORT_VERTICAL &&
+	   element != EL_SP_PORT_ANY) ||
 	  (dy == +1 &&
-	   element != EL_SP_PORT1_DOWN &&
-	   element != EL_SP_PORT2_DOWN &&
-	   element != EL_SP_PORT_Y &&
-	   element != EL_SP_PORT_XY) ||
-	  !IN_LEV_FIELD(x + dx, y + dy) ||
-	  !IS_FREE(x + dx, y + dy))
+	   element != EL_SP_PORT_DOWN &&
+	   element != EL_SP_GRAVITY_PORT_DOWN &&
+	   element != EL_SP_PORT_VERTICAL &&
+	   element != EL_SP_PORT_ANY) ||
+	  !IN_LEV_FIELD(nextx, nexty) ||
+	  !IS_FREE(nextx, nexty))
 	return MF_NO_ACTION;
 
+      if (element == EL_SP_GRAVITY_PORT_LEFT ||
+	  element == EL_SP_GRAVITY_PORT_RIGHT ||
+	  element == EL_SP_GRAVITY_PORT_UP ||
+	  element == EL_SP_GRAVITY_PORT_DOWN)
+	game.gravity = !game.gravity;
+
       /* automatically move to the next field with double speed */
       player->programmed_action = move_direction;
       DOUBLE_PLAYER_SPEED(player);
 
-      PlaySoundLevel(x, y, SND_SP_PORT_PASSING);
+      PlayLevelSound(x, y, SND_CLASS_SP_PORT_PASSING);
       break;
 
-    case EL_TUBE_ALL:
+    case EL_TUBE_ANY:
     case EL_TUBE_VERTICAL:
     case EL_TUBE_HORIZONTAL:
     case EL_TUBE_VERTICAL_LEFT:
@@ -6241,7 +8287,7 @@ int DigField(struct PlayerInfo *player,
 	int i = 0;
 	int tube_enter_directions[][2] =
 	{
-	  { EL_TUBE_ALL,		MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN },
+	  { EL_TUBE_ANY,		MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN },
 	  { EL_TUBE_VERTICAL,		                     MV_UP | MV_DOWN },
 	  { EL_TUBE_HORIZONTAL,		MV_LEFT | MV_RIGHT                   },
 	  { EL_TUBE_VERTICAL_LEFT,	          MV_RIGHT | MV_UP | MV_DOWN },
@@ -6262,187 +8308,464 @@ int DigField(struct PlayerInfo *player,
 	    break;
 	}
 
-	if (!(tube_enter_directions[i][1] & move_direction))
-	  return MF_NO_ACTION;	/* tube has no opening in this direction */
+	if (!(tube_enter_directions[i][1] & move_direction))
+	  return MF_NO_ACTION;	/* tube has no opening in this direction */
+
+	PlayLevelSound(x, y, SND_CLASS_TUBE_WALKING);
+      }
+      break;
+
+    default:
+
+      if (IS_WALKABLE(element))
+      {
+	int sound_action = ACTION_WALKING;
+
+	if (element >= EL_GATE_1 && element <= EL_GATE_4)
+	{
+	  if (!player->key[element - EL_GATE_1])
+	    return MF_NO_ACTION;
+	}
+	else if (element >= EL_GATE_1_GRAY && element <= EL_GATE_4_GRAY)
+	{
+	  if (!player->key[element - EL_GATE_1_GRAY])
+	    return MF_NO_ACTION;
+	}
+	else if (element == EL_EXIT_OPEN ||
+		 element == EL_SP_EXIT_OPEN ||
+		 element == EL_SP_EXIT_OPENING)
+	{
+	  sound_action = ACTION_PASSING;	/* player is passing exit */
+	}
+	else if (element == EL_EMPTY)
+	{
+	  sound_action = ACTION_MOVING;		/* nothing to walk on */
+	}
+
+	/* play sound from background or player, whatever is available */
+	if (element_info[element].sound[sound_action] != SND_UNDEFINED)
+	  PlayLevelSoundElementAction(x, y, element, sound_action);
+	else
+	  PlayLevelSoundElementAction(x, y, player->element_nr, sound_action);
+
+	break;
+      }
+      else if (IS_PASSABLE(element))
+      {
+	if (!IN_LEV_FIELD(nextx, nexty) || !IS_FREE(nextx, nexty))
+	  return MF_NO_ACTION;
+
+#if 1
+	if (CAN_MOVE(element))	/* only fixed elements can be passed! */
+	  return MF_NO_ACTION;
+#endif
+
+	if (element >= EL_EM_GATE_1 && element <= EL_EM_GATE_4)
+	{
+	  if (!player->key[element - EL_EM_GATE_1])
+	    return MF_NO_ACTION;
+	}
+	else if (element >= EL_EM_GATE_1_GRAY && element <= EL_EM_GATE_4_GRAY)
+	{
+	  if (!player->key[element - EL_EM_GATE_1_GRAY])
+	    return MF_NO_ACTION;
+	}
+
+	/* automatically move to the next field with double speed */
+	player->programmed_action = move_direction;
+	DOUBLE_PLAYER_SPEED(player);
+
+	PlayLevelSoundAction(x, y, ACTION_PASSING);
+
+	break;
+      }
+      else if (IS_DIGGABLE(element))
+      {
+	RemoveField(x, y);
+
+	if (mode != DF_SNAP)
+	{
+#if 1
+	  GfxElement[x][y] = GFX_ELEMENT(element);
+#else
+	  GfxElement[x][y] =
+	    (GFX_CRUMBLED(element) ? EL_SAND : GFX_ELEMENT(element));
+#endif
+	  player->is_digging = TRUE;
+	}
+
+	PlayLevelSoundElementAction(x, y, element, ACTION_DIGGING);
+
+	CheckTriggeredElementChange(x, y, element, CE_OTHER_GETS_DIGGED);
+
+#if 1
+	if (mode == DF_SNAP)
+	  TestIfElementTouchesCustomElement(x, y);	/* for empty space */
+#endif
 
-	PlaySoundLevel(x, y, SND_TUBE_PASSING);
+	break;
       }
-      break;
+      else if (IS_COLLECTIBLE(element))
+      {
+	RemoveField(x, y);
 
-    case EL_EXIT_CLOSED:
-    case EL_SP_EXIT_CLOSED:
-    case EL_EXIT_OPENING:
-      return MF_NO_ACTION;
-      break;
+	if (mode != DF_SNAP)
+	{
+	  GfxElement[x][y] = element;
+	  player->is_collecting = TRUE;
+	}
 
-    case EL_EXIT_OPEN:
-    case EL_SP_EXIT_OPEN:
-      if (mode == DF_SNAP)
-	return MF_NO_ACTION;
+	if (element == EL_SPEED_PILL)
+	  player->move_delay_value = MOVE_DELAY_HIGH_SPEED;
+	else if (element == EL_EXTRA_TIME && level.time > 0)
+	{
+	  TimeLeft += 10;
+	  DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FONT_TEXT_2);
+	}
+	else if (element == EL_SHIELD_NORMAL || element == EL_SHIELD_DEADLY)
+	{
+	  player->shield_normal_time_left += 10;
+	  if (element == EL_SHIELD_DEADLY)
+	    player->shield_deadly_time_left += 10;
+	}
+	else if (element == EL_DYNAMITE || element == EL_SP_DISK_RED)
+	{
+	  if (player->inventory_size < MAX_INVENTORY_SIZE)
+	    player->inventory_element[player->inventory_size++] = element;
 
-      if (element == EL_EXIT_OPEN)
-	PlaySoundLevel(x, y, SND_EXIT_PASSING);
-      else
-	PlaySoundLevel(x, y, SND_SP_EXIT_PASSING);
+	  DrawText(DX_DYNAMITE, DY_DYNAMITE,
+		   int2str(local_player->inventory_size, 3), FONT_TEXT_2);
+	}
+	else if (element == EL_DYNABOMB_INCREASE_NUMBER)
+	{
+	  player->dynabomb_count++;
+	  player->dynabombs_left++;
+	}
+	else if (element == EL_DYNABOMB_INCREASE_SIZE)
+	{
+	  player->dynabomb_size++;
+	}
+	else if (element == EL_DYNABOMB_INCREASE_POWER)
+	{
+	  player->dynabomb_xl = TRUE;
+	}
+	else if ((element >= EL_KEY_1 && element <= EL_KEY_4) ||
+		 (element >= EL_EM_KEY_1 && element <= EL_EM_KEY_4))
+	{
+	  int key_nr = (element >= EL_KEY_1 && element <= EL_KEY_4 ?
+			element - EL_KEY_1 : element - EL_EM_KEY_1);
 
-      break;
+	  player->key[key_nr] = TRUE;
 
-    case EL_LAMP:
-      Feld[x][y] = EL_LAMP_ACTIVE;
-      local_player->lights_still_needed--;
-      DrawLevelField(x, y);
-      PlaySoundLevel(x, y, SND_LAMP_ACTIVATING);
-      return MF_ACTION;
-      break;
+	  DrawMiniGraphicExt(drawto, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
+			     el2edimg(EL_KEY_1 + key_nr));
+	  redraw_mask |= REDRAW_DOOR_1;
+	}
+	else if (IS_ENVELOPE(element))
+	{
+#if 1
+	  player->show_envelope = element;
+#else
+	  ShowEnvelope(element - EL_ENVELOPE_1);
+#endif
+	}
+	else if (IS_DROPPABLE(element))	/* can be collected and dropped */
+	{
+	  int i;
 
-    case EL_TIME_ORB_FULL:
-      Feld[x][y] = EL_TIME_ORB_EMPTY;
-      TimeLeft += 10;
-      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
-      DrawLevelField(x, y);
-      PlaySoundStereo(SND_TIME_ORB_FULL_COLLECTING, SOUND_MAX_RIGHT);
-      return MF_ACTION;
-      break;
+	  for (i = 0; i < element_info[element].collect_count; i++)
+	    if (player->inventory_size < MAX_INVENTORY_SIZE)
+	      player->inventory_element[player->inventory_size++] = element;
 
-    case EL_SOKOBAN_FIELD_EMPTY:
-      break;
+	  DrawText(DX_DYNAMITE, DY_DYNAMITE,
+		   int2str(local_player->inventory_size, 3), FONT_TEXT_2);
+	}
+	else if (element_info[element].collect_count > 0)
+	{
+	  local_player->gems_still_needed -=
+	    element_info[element].collect_count;
+	  if (local_player->gems_still_needed < 0)
+	    local_player->gems_still_needed = 0;
 
-    case EL_SOKOBAN_OBJECT:
-    case EL_SOKOBAN_FIELD_FULL:
-    case EL_SATELLITE:
-    case EL_SP_DISK_YELLOW:
-    case EL_BALLOON:
-      if (mode == DF_SNAP)
-	return MF_NO_ACTION;
+	  DrawText(DX_EMERALDS, DY_EMERALDS,
+		   int2str(local_player->gems_still_needed, 3), FONT_TEXT_2);
+	}
 
-      player->Pushing = TRUE;
+	RaiseScoreElement(element);
+	PlayLevelSoundElementAction(x, y, element, ACTION_COLLECTING);
 
-      if (!IN_LEV_FIELD(x+dx, y+dy)
-	  || (!IS_FREE(x+dx, y+dy)
-	      && (Feld[x+dx][y+dy] != EL_SOKOBAN_FIELD_EMPTY
-		  || !IS_SB_ELEMENT(element))))
-	return MF_NO_ACTION;
+	CheckTriggeredElementChange(x, y, element, CE_OTHER_GETS_COLLECTED);
 
-      if (dx && real_dy)
-      {
-	if (IN_LEV_FIELD(jx, jy+real_dy) && !IS_SOLID(Feld[jx][jy+real_dy]))
-	  return MF_NO_ACTION;
+#if 1
+	if (mode == DF_SNAP)
+	  TestIfElementTouchesCustomElement(x, y);	/* for empty space */
+#endif
+
+	break;
       }
-      else if (dy && real_dx)
+      else if (IS_PUSHABLE(element))
       {
-	if (IN_LEV_FIELD(jx+real_dx, jy) && !IS_SOLID(Feld[jx+real_dx][jy]))
+	if (mode == DF_SNAP && element != EL_BD_ROCK)
 	  return MF_NO_ACTION;
-      }
 
-      if (player->push_delay == 0)
-	player->push_delay = FrameCounter;
-#if 0
-      if (!FrameReached(&player->push_delay, player->push_delay_value) &&
-	  !tape.playing && element != EL_BALLOON)
-	return MF_NO_ACTION;
+	if (CAN_FALL(element) && dy)
+	  return MF_NO_ACTION;
+
+	if (CAN_FALL(element) && IN_LEV_FIELD(x, y + 1) && IS_FREE(x, y + 1) &&
+	    !(element == EL_SPRING && use_spring_bug))
+	  return MF_NO_ACTION;
+
+#if 1
+	if (CAN_MOVE(element) && GET_MAX_MOVE_DELAY(element) == 0 &&
+	    ((move_direction & MV_VERTICAL &&
+	      ((element_info[element].move_pattern & MV_LEFT &&
+		IN_LEV_FIELD(x - 1, y) && IS_FREE(x - 1, y)) ||
+	       (element_info[element].move_pattern & MV_RIGHT &&
+		IN_LEV_FIELD(x + 1, y) && IS_FREE(x + 1, y)))) ||
+	     (move_direction & MV_HORIZONTAL &&
+	      ((element_info[element].move_pattern & MV_UP &&
+		IN_LEV_FIELD(x, y - 1) && IS_FREE(x, y - 1)) ||
+	       (element_info[element].move_pattern & MV_DOWN &&
+		IN_LEV_FIELD(x, y + 1) && IS_FREE(x, y + 1))))))
+	  return MF_NO_ACTION;
+#endif
+
+#if 1
+	/* do not push elements already moving away faster than player */
+	if (CAN_MOVE(element) && MovDir[x][y] == move_direction &&
+	    ABS(getElementMoveStepsize(x, y)) > MOVE_STEPSIZE_NORMAL)
+	  return MF_NO_ACTION;
 #else
-      if (!FrameReached(&player->push_delay, player->push_delay_value) &&
-	  !(tape.playing && tape.file_version < FILE_VERSION_2_0) &&
-	  element != EL_BALLOON)
-	return MF_NO_ACTION;
+	if (element == EL_SPRING && MovDir[x][y] != MV_NO_MOVING)
+	  return MF_NO_ACTION;
 #endif
 
-      if (IS_SB_ELEMENT(element))
-      {
-	if (element == EL_SOKOBAN_FIELD_FULL)
+#if 1
+	if (game.engine_version >= VERSION_IDENT(3,0,7,1))
 	{
-	  Feld[x][y] = EL_SOKOBAN_FIELD_EMPTY;
-	  local_player->sokobanfields_still_needed++;
+	  if (player->push_delay_value == -1)
+	    player->push_delay_value = GET_NEW_PUSH_DELAY(element);
 	}
-	else
-	  RemoveField(x, y);
+	else if (game.engine_version >= VERSION_IDENT(2,2,0,7))
+	{
+	  if (!player->is_pushing)
+	    player->push_delay_value = GET_NEW_PUSH_DELAY(element);
+	}
+
+	/*
+	if (game.engine_version >= VERSION_IDENT(2,2,0,7) &&
+	    (game.engine_version < VERSION_IDENT(3,0,7,1) ||
+	     !player_is_pushing))
+	  player->push_delay_value = GET_NEW_PUSH_DELAY(element);
+	*/
+#else
+	if (!player->is_pushing &&
+	    game.engine_version >= VERSION_IDENT(2,2,0,7))
+	  player->push_delay_value = GET_NEW_PUSH_DELAY(element);
+#endif
+
+#if 0
+	printf("::: push delay: %ld [%d, %d] [%d]\n",
+	       player->push_delay_value, FrameCounter, game.engine_version,
+	       player->is_pushing);
+#endif
 
-	if (Feld[x+dx][y+dy] == EL_SOKOBAN_FIELD_EMPTY)
+	player->is_pushing = TRUE;
+
+	if (!(IN_LEV_FIELD(nextx, nexty) &&
+	      (IS_FREE(nextx, nexty) ||
+	       (Feld[nextx][nexty] == EL_SOKOBAN_FIELD_EMPTY &&
+		IS_SB_ELEMENT(element)))))
+	  return MF_NO_ACTION;
+
+	if (!checkDiagonalPushing(player, x, y, real_dx, real_dy))
+	  return MF_NO_ACTION;
+
+	if (player->push_delay == 0)	/* new pushing; restart delay */
+	  player->push_delay = FrameCounter;
+
+	if (!FrameReached(&player->push_delay, player->push_delay_value) &&
+	    !(tape.playing && tape.file_version < FILE_VERSION_2_0) &&
+	    element != EL_SPRING && element != EL_BALLOON)
 	{
-	  Feld[x+dx][y+dy] = EL_SOKOBAN_FIELD_FULL;
-	  local_player->sokobanfields_still_needed--;
-	  if (element == EL_SOKOBAN_OBJECT)
-	    PlaySoundLevel(x, y, SND_SOKOBAN_FIELD_FILLING);
-	  else
-	    PlaySoundLevel(x, y, SND_SOKOBAN_OBJECT_PUSHING);
+	  /* make sure that there is no move delay before next try to push */
+	  if (game.engine_version >= VERSION_IDENT(3,0,7,1))
+	    player->move_delay = INITIAL_MOVE_DELAY_OFF;
+
+	  return MF_NO_ACTION;
 	}
-	else
+
+#if 0
+	printf("::: NOW PUSHING... [%d]\n", FrameCounter);
+#endif
+
+	if (IS_SB_ELEMENT(element))
 	{
-	  Feld[x+dx][y+dy] = EL_SOKOBAN_OBJECT;
 	  if (element == EL_SOKOBAN_FIELD_FULL)
-	    PlaySoundLevel(x, y, SND_SOKOBAN_FIELD_EMPTYING);
+	  {
+	    Back[x][y] = EL_SOKOBAN_FIELD_EMPTY;
+	    local_player->sokobanfields_still_needed++;
+	  }
+
+	  if (Feld[nextx][nexty] == EL_SOKOBAN_FIELD_EMPTY)
+	  {
+	    Back[nextx][nexty] = EL_SOKOBAN_FIELD_EMPTY;
+	    local_player->sokobanfields_still_needed--;
+	  }
+
+	  Feld[x][y] = EL_SOKOBAN_OBJECT;
+
+	  if (Back[x][y] == Back[nextx][nexty])
+	    PlayLevelSoundAction(x, y, ACTION_PUSHING);
+	  else if (Back[x][y] != 0)
+	    PlayLevelSoundElementAction(x, y, EL_SOKOBAN_FIELD_FULL,
+					ACTION_EMPTYING);
 	  else
-	    PlaySoundLevel(x, y, SND_SOKOBAN_OBJECT_PUSHING);
+	    PlayLevelSoundElementAction(nextx, nexty, EL_SOKOBAN_FIELD_EMPTY,
+					ACTION_FILLING);
+
+	  if (local_player->sokobanfields_still_needed == 0 &&
+	      game.emulation == EMU_SOKOBAN)
+	  {
+	    player->LevelSolved = player->GameOver = TRUE;
+	    PlayLevelSound(x, y, SND_GAME_SOKOBAN_SOLVING);
+	  }
 	}
-      }
-      else
-      {
-	RemoveField(x, y);
-	Feld[x+dx][y+dy] = element;
-	PlaySoundLevelElementAction(x, y, element, ACTION_PUSHING);
-      }
+	else
+	  PlayLevelSoundElementAction(x, y, element, ACTION_PUSHING);
 
-      player->push_delay_value = (element == EL_BALLOON ? 0 : 2);
+	InitMovingField(x, y, move_direction);
+	GfxAction[x][y] = ACTION_PUSHING;
 
-      DrawLevelField(x, y);
-      DrawLevelField(x + dx, y + dy);
+	if (mode == DF_SNAP)
+	  ContinueMoving(x, y);
+	else
+	  MovPos[x][y] = (dx != 0 ? dx : dy);
 
-      if (IS_SB_ELEMENT(element) &&
-	  local_player->sokobanfields_still_needed == 0 &&
-	  game.emulation == EMU_SOKOBAN)
-      {
-	player->LevelSolved = player->GameOver = TRUE;
-	PlaySoundLevel(x, y, SND_SOKOBAN_GAME_SOLVING);
-      }
+	Pushed[x][y] = TRUE;
+	Pushed[nextx][nexty] = TRUE;
 
-      break;
+	if (game.engine_version < VERSION_IDENT(2,2,0,7))
+	  player->push_delay_value = GET_NEW_PUSH_DELAY(element);
+	else
+	  player->push_delay_value = -1;	/* get new value later */
 
-    case EL_PENGUIN:
-    case EL_PIG:
-    case EL_DRAGON:
-      break;
+	CheckTriggeredElementSideChange(x, y, element, dig_side,
+					CE_OTHER_GETS_PUSHED);
+	CheckElementSideChange(x, y, element, dig_side,
+			       CE_PUSHED_BY_PLAYER, -1);
 
-    default:
-      if (IS_PUSHABLE(element))
+	break;
+      }
+      else if (IS_SWITCHABLE(element))
       {
-	if (mode == DF_SNAP)
-	  return MF_NO_ACTION;
+	if (PLAYER_SWITCHING(player, x, y))
+	  return MF_ACTION;
 
-	if (CAN_FALL(element) && dy)
-	  return MF_NO_ACTION;
+	player->is_switching = TRUE;
+	player->switch_x = x;
+	player->switch_y = y;
 
-	player->Pushing = TRUE;
+	PlayLevelSoundElementAction(x, y, element, ACTION_ACTIVATING);
 
-	if (!IN_LEV_FIELD(x+dx, y+dy) || !IS_FREE(x+dx, y+dy))
-	  return MF_NO_ACTION;
+	if (element == EL_ROBOT_WHEEL)
+	{
+	  Feld[x][y] = EL_ROBOT_WHEEL_ACTIVE;
+	  ZX = x;
+	  ZY = y;
+
+	  DrawLevelField(x, y);
+	}
+	else if (element == EL_SP_TERMINAL)
+	{
+	  int xx, yy;
 
-	if (dx && real_dy)
+	  for (yy = 0; yy < lev_fieldy; yy++) for (xx=0; xx < lev_fieldx; xx++)
+	  {
+	    if (Feld[xx][yy] == EL_SP_DISK_YELLOW)
+	      Bang(xx, yy);
+	    else if (Feld[xx][yy] == EL_SP_TERMINAL)
+	      Feld[xx][yy] = EL_SP_TERMINAL_ACTIVE;
+	  }
+	}
+	else if (IS_BELT_SWITCH(element))
 	{
-	  if (IN_LEV_FIELD(jx, jy+real_dy) && !IS_SOLID(Feld[jx][jy+real_dy]))
-	    return MF_NO_ACTION;
+	  ToggleBeltSwitch(x, y);
 	}
-	else if (dy && real_dx)
+	else if (element == EL_SWITCHGATE_SWITCH_UP ||
+		 element == EL_SWITCHGATE_SWITCH_DOWN)
 	{
-	  if (IN_LEV_FIELD(jx+real_dx, jy) && !IS_SOLID(Feld[jx+real_dx][jy]))
-	    return MF_NO_ACTION;
+	  ToggleSwitchgateSwitch(x, y);
 	}
+	else if (element == EL_LIGHT_SWITCH ||
+		 element == EL_LIGHT_SWITCH_ACTIVE)
+	{
+	  ToggleLightSwitch(x, y);
 
-	if (player->push_delay == 0)
-	  player->push_delay = FrameCounter;
+#if 0
+	  PlayLevelSound(x, y, element == EL_LIGHT_SWITCH ?
+			 SND_LIGHT_SWITCH_ACTIVATING :
+			 SND_LIGHT_SWITCH_DEACTIVATING);
+#endif
+	}
+	else if (element == EL_TIMEGATE_SWITCH)
+	{
+	  ActivateTimegateSwitch(x, y);
+	}
+	else if (element == EL_BALLOON_SWITCH_LEFT ||
+		 element == EL_BALLOON_SWITCH_RIGHT ||
+		 element == EL_BALLOON_SWITCH_UP ||
+		 element == EL_BALLOON_SWITCH_DOWN ||
+		 element == EL_BALLOON_SWITCH_ANY)
+	{
+	  if (element == EL_BALLOON_SWITCH_ANY)
+	    game.balloon_dir = move_direction;
+	  else
+	    game.balloon_dir = (element == EL_BALLOON_SWITCH_LEFT  ? MV_LEFT :
+				element == EL_BALLOON_SWITCH_RIGHT ? MV_RIGHT :
+				element == EL_BALLOON_SWITCH_UP    ? MV_UP :
+				element == EL_BALLOON_SWITCH_DOWN  ? MV_DOWN :
+				MV_NO_MOVING);
+	}
+	else if (element == EL_LAMP)
+	{
+	  Feld[x][y] = EL_LAMP_ACTIVE;
+	  local_player->lights_still_needed--;
 
-	if (!FrameReached(&player->push_delay, player->push_delay_value) &&
-	    !(tape.playing && tape.file_version < FILE_VERSION_2_0))
-	  return MF_NO_ACTION;
+	  DrawLevelField(x, y);
+	}
+	else if (element == EL_TIME_ORB_FULL)
+	{
+	  Feld[x][y] = EL_TIME_ORB_EMPTY;
+	  TimeLeft += 10;
+	  DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FONT_TEXT_2);
 
-	RemoveField(x, y);
-	Feld[x + dx][y + dy] = element;
+	  DrawLevelField(x, y);
+
+#if 0
+	  PlaySoundStereo(SND_TIME_ORB_FULL_COLLECTING, SOUND_MIDDLE);
+#endif
+	}
 
-	player->push_delay_value = 2 + RND(8);
+	return MF_ACTION;
+      }
+      else
+      {
+	if (!PLAYER_SWITCHING(player, x, y))
+	{
+	  player->is_switching = TRUE;
+	  player->switch_x = x;
+	  player->switch_y = y;
 
-	DrawLevelField(x + dx, y + dy);
-	PlaySoundLevelElementAction(x, y, element, ACTION_PUSHING);
+	  CheckTriggeredElementSideChange(x, y, element, dig_side,
+					  CE_OTHER_IS_SWITCHING);
+	  CheckElementSideChange(x, y, element, dig_side, CE_SWITCHED, -1);
+	}
 
-	break;
+	CheckTriggeredElementSideChange(x, y, element, dig_side,
+					CE_OTHER_GETS_PRESSED);
+	CheckElementSideChange(x, y, element, dig_side,
+			       CE_PRESSED_BY_PLAYER, -1);
       }
 
       return MF_NO_ACTION;
@@ -6450,6 +8773,9 @@ int DigField(struct PlayerInfo *player,
 
   player->push_delay = 0;
 
+  if (Feld[x][y] != element)		/* really digged/collected something */
+    player->is_collecting = !player->is_digging;
+
   return MF_MOVING;
 }
 
@@ -6457,6 +8783,13 @@ boolean SnapField(struct PlayerInfo *player, int dx, int dy)
 {
   int jx = player->jx, jy = player->jy;
   int x = jx + dx, y = jy + dy;
+  int snap_direction = (dx == -1 ? MV_LEFT :
+			dx == +1 ? MV_RIGHT :
+			dy == -1 ? MV_UP :
+			dy == +1 ? MV_DOWN : MV_NO_MOVING);
+
+  if (player->MovPos && game.engine_version >= VERSION_IDENT(2,2,0,0))
+    return FALSE;
 
   if (!player->active || !IN_LEV_FIELD(x, y))
     return FALSE;
@@ -6467,79 +8800,108 @@ boolean SnapField(struct PlayerInfo *player, int dx, int dy)
   if (!dx && !dy)
   {
     if (player->MovPos == 0)
-      player->Pushing = FALSE;
+      player->is_pushing = FALSE;
+
+    player->is_snapping = FALSE;
+
+    if (player->MovPos == 0)
+    {
+      player->is_moving = FALSE;
+      player->is_digging = FALSE;
+      player->is_collecting = FALSE;
+    }
 
-    player->snapped = FALSE;
     return FALSE;
   }
 
-  if (player->snapped)
+  if (player->is_snapping)
     return FALSE;
 
-  player->MovDir = (dx < 0 ? MV_LEFT :
-		    dx > 0 ? MV_RIGHT :
-		    dy < 0 ? MV_UP :
-		    dy > 0 ? MV_DOWN :	MV_NO_MOVING);
+  player->MovDir = snap_direction;
 
-  if (!DigField(player, x, y, 0, 0, DF_SNAP))
+  player->is_moving = FALSE;
+  player->is_digging = FALSE;
+  player->is_collecting = FALSE;
+
+  if (DigField(player, x, y, 0, 0, DF_SNAP) == MF_NO_ACTION)
     return FALSE;
 
-  player->snapped = TRUE;
+  player->is_snapping = TRUE;
+
+  player->is_moving = FALSE;
+  player->is_digging = FALSE;
+  player->is_collecting = FALSE;
+
   DrawLevelField(x, y);
   BackToFront();
 
   return TRUE;
 }
 
-boolean PlaceBomb(struct PlayerInfo *player)
+boolean DropElement(struct PlayerInfo *player)
 {
   int jx = player->jx, jy = player->jy;
-  int element;
+  int old_element;
 
   if (!player->active || player->MovPos)
     return FALSE;
 
-  element = Feld[jx][jy];
+  old_element = Feld[jx][jy];
+
+  /* check if player has anything that can be dropped */
+  if (player->inventory_size == 0 && player->dynabombs_left == 0)
+    return FALSE;
+
+  /* check if anything can be dropped at the current position */
+  if (IS_ACTIVE_BOMB(old_element) || old_element == EL_EXPLOSION)
+    return FALSE;
 
-  if ((player->dynamite == 0 && player->dynabombs_left == 0) ||
-      IS_ACTIVE_BOMB(element) || element == EL_EXPLOSION)
+  /* collected custom elements can only be dropped on empty fields */
+  if (player->inventory_size > 0 &&
+      IS_CUSTOM_ELEMENT(player->inventory_element[player->inventory_size - 1])
+      && old_element != EL_EMPTY)
     return FALSE;
 
-  if (element != EL_EMPTY)
-    Store[jx][jy] = element;
+  if (old_element != EL_EMPTY)
+    Back[jx][jy] = old_element;		/* store old element on this field */
 
   MovDelay[jx][jy] = 96;
 
   ResetGfxAnimation(jx, jy);
   ResetRandomAnimationValue(jx, jy);
 
-  if (player->dynamite)
+  if (player->inventory_size > 0)
   {
-    Feld[jx][jy] = EL_DYNAMITE_ACTIVE;
-    player->dynamite--;
+    int new_element = player->inventory_element[--player->inventory_size];
+
+    Feld[jx][jy] = (new_element == EL_DYNAMITE ? EL_DYNAMITE_ACTIVE :
+		    new_element == EL_SP_DISK_RED ? EL_SP_DISK_RED_ACTIVE :
+		    new_element);
+
+    DrawText(DX_DYNAMITE, DY_DYNAMITE,
+	     int2str(local_player->inventory_size, 3), FONT_TEXT_2);
 
-    DrawText(DX_DYNAMITE, DY_DYNAMITE, int2str(local_player->dynamite, 3),
-	     FS_SMALL, FC_YELLOW);
     if (IN_SCR_FIELD(SCREENX(jx), SCREENY(jy)))
-    {
-      if (game.emulation == EMU_SUPAPLEX)
-	DrawGraphic(SCREENX(jx), SCREENY(jy), IMG_SP_DISK_RED, 0);
-      else
-	DrawGraphicThruMask(SCREENX(jx), SCREENY(jy), IMG_DYNAMITE_ACTIVE, 0);
-    }
+      DrawGraphicThruMask(SCREENX(jx), SCREENY(jy), el2img(Feld[jx][jy]), 0);
+
+    PlayLevelSoundAction(jx, jy, ACTION_DROPPING);
+
+    CheckTriggeredElementChange(jx, jy, new_element, CE_OTHER_GETS_DROPPED);
+    CheckElementChange(jx, jy, new_element, CE_DROPPED_BY_PLAYER);
 
-    PlaySoundLevel(jx, jy, SND_DYNAMITE_DROPPING);
+    TestIfElementTouchesCustomElement(jx, jy);
   }
-  else
+  else		/* player is dropping a dyna bomb */
   {
-    Feld[jx][jy] =
-      EL_DYNABOMB_PLAYER1_ACTIVE + (player->element_nr - EL_PLAYER1);
     player->dynabombs_left--;
 
+    Feld[jx][jy] =
+      EL_DYNABOMB_PLAYER_1_ACTIVE + (player->element_nr - EL_PLAYER_1);
+
     if (IN_SCR_FIELD(SCREENX(jx), SCREENY(jy)))
       DrawGraphicThruMask(SCREENX(jx), SCREENY(jy), el2img(Feld[jx][jy]), 0);
 
-    PlaySoundLevel(jx, jy, SND_DYNABOMB_DROPPING);
+    PlayLevelSoundAction(jx, jy, ACTION_DROPPING);
   }
 
   return TRUE;
@@ -6552,21 +8914,18 @@ boolean PlaceBomb(struct PlayerInfo *player)
 static int *loop_sound_frame = NULL;
 static int *loop_sound_volume = NULL;
 
-void InitPlaySoundLevel()
+void InitPlayLevelSound()
 {
   int num_sounds = getSoundListSize();
 
-  if (loop_sound_frame != NULL)
-    free(loop_sound_frame);
+  checked_free(loop_sound_frame);
+  checked_free(loop_sound_volume);
 
-  if (loop_sound_volume != NULL)
-    free(loop_sound_volume);
-
-  loop_sound_frame = checked_calloc(num_sounds * sizeof(int));
+  loop_sound_frame  = checked_calloc(num_sounds * sizeof(int));
   loop_sound_volume = checked_calloc(num_sounds * sizeof(int));
 }
 
-static void PlaySoundLevel(int x, int y, int nr)
+static void PlayLevelSound(int x, int y, int nr)
 {
   int sx = SCREENX(x), sy = SCREENY(y);
   int volume, stereo_position;
@@ -6611,34 +8970,65 @@ static void PlaySoundLevel(int x, int y, int nr)
   PlaySoundExt(nr, volume, stereo_position, type);
 }
 
-static void PlaySoundLevelNearest(int x, int y, int sound_action)
+static void PlayLevelSoundNearest(int x, int y, int sound_action)
 {
-  PlaySoundLevel(x < LEVELX(BX1) ? LEVELX(BX1) :
+  PlayLevelSound(x < LEVELX(BX1) ? LEVELX(BX1) :
 		 x > LEVELX(BX2) ? LEVELX(BX2) : x,
 		 y < LEVELY(BY1) ? LEVELY(BY1) :
 		 y > LEVELY(BY2) ? LEVELY(BY2) : y,
 		 sound_action);
 }
 
-static void PlaySoundLevelAction(int x, int y, int sound_action)
+static void PlayLevelSoundAction(int x, int y, int action)
 {
-  PlaySoundLevelElementAction(x, y, Feld[x][y], sound_action);
+  PlayLevelSoundElementAction(x, y, Feld[x][y], action);
 }
 
-static void PlaySoundLevelElementAction(int x, int y, int element,
-					int sound_action)
+static void PlayLevelSoundElementAction(int x, int y, int element, int action)
 {
-  int sound_effect = element_info[element].sound[sound_action];
+  int sound_effect = element_info[element].sound[action];
 
   if (sound_effect != SND_UNDEFINED)
-    PlaySoundLevel(x, y, sound_effect);
+    PlayLevelSound(x, y, sound_effect);
+}
+
+static void PlayLevelSoundElementActionIfLoop(int x, int y, int element,
+					      int action)
+{
+  int sound_effect = element_info[element].sound[action];
+
+  if (sound_effect != SND_UNDEFINED && IS_LOOP_SOUND(sound_effect))
+    PlayLevelSound(x, y, sound_effect);
+}
+
+static void PlayLevelSoundActionIfLoop(int x, int y, int action)
+{
+  int sound_effect = element_info[Feld[x][y]].sound[action];
+
+  if (sound_effect != SND_UNDEFINED && IS_LOOP_SOUND(sound_effect))
+    PlayLevelSound(x, y, sound_effect);
+}
+
+static void StopLevelSoundActionIfLoop(int x, int y, int action)
+{
+  int sound_effect = element_info[Feld[x][y]].sound[action];
+
+  if (sound_effect != SND_UNDEFINED && IS_LOOP_SOUND(sound_effect))
+    StopSound(sound_effect);
+}
+
+static void PlayLevelMusic()
+{
+  if (levelset.music[level_nr] != MUS_UNDEFINED)
+    PlayMusic(levelset.music[level_nr]);	/* from config file */
+  else
+    PlayMusic(MAP_NOCONF_MUSIC(level_nr));	/* from music dir */
 }
 
 void RaiseScore(int value)
 {
   local_player->score += value;
-  DrawText(DX_SCORE, DY_SCORE, int2str(local_player->score, 5),
-	   FS_SMALL, FC_YELLOW);
+  DrawText(DX_SCORE, DY_SCORE, int2str(local_player->score, 5), FONT_TEXT_2);
 }
 
 void RaiseScoreElement(int element)
@@ -6650,22 +9040,31 @@ void RaiseScoreElement(int element)
     case EL_EMERALD_YELLOW:
     case EL_EMERALD_RED:
     case EL_EMERALD_PURPLE:
-      RaiseScore(level.score[SC_EDELSTEIN]);
+    case EL_SP_INFOTRON:
+      RaiseScore(level.score[SC_EMERALD]);
       break;
     case EL_DIAMOND:
-      RaiseScore(level.score[SC_DIAMANT]);
+      RaiseScore(level.score[SC_DIAMOND]);
+      break;
+    case EL_CRYSTAL:
+      RaiseScore(level.score[SC_CRYSTAL]);
+      break;
+    case EL_PEARL:
+      RaiseScore(level.score[SC_PEARL]);
       break;
     case EL_BUG:
     case EL_BD_BUTTERFLY:
-      RaiseScore(level.score[SC_KAEFER]);
+    case EL_SP_ELECTRON:
+      RaiseScore(level.score[SC_BUG]);
       break;
     case EL_SPACESHIP:
     case EL_BD_FIREFLY:
-      RaiseScore(level.score[SC_FLIEGER]);
+    case EL_SP_SNIKSNAK:
+      RaiseScore(level.score[SC_SPACESHIP]);
       break;
     case EL_YAMYAM:
     case EL_DARK_YAMYAM:
-      RaiseScore(level.score[SC_MAMPFER]);
+      RaiseScore(level.score[SC_YAMYAM]);
       break;
     case EL_ROBOT:
       RaiseScore(level.score[SC_ROBOT]);
@@ -6674,18 +9073,30 @@ void RaiseScoreElement(int element)
       RaiseScore(level.score[SC_PACMAN]);
       break;
     case EL_NUT:
-      RaiseScore(level.score[SC_KOKOSNUSS]);
+      RaiseScore(level.score[SC_NUT]);
       break;
     case EL_DYNAMITE:
-      RaiseScore(level.score[SC_DYNAMIT]);
+    case EL_SP_DISK_RED:
+    case EL_DYNABOMB_INCREASE_NUMBER:
+    case EL_DYNABOMB_INCREASE_SIZE:
+    case EL_DYNABOMB_INCREASE_POWER:
+      RaiseScore(level.score[SC_DYNAMITE]);
+      break;
+    case EL_SHIELD_NORMAL:
+    case EL_SHIELD_DEADLY:
+      RaiseScore(level.score[SC_SHIELD]);
       break;
-    case EL_KEY1:
-    case EL_KEY2:
-    case EL_KEY3:
-    case EL_KEY4:
-      RaiseScore(level.score[SC_SCHLUESSEL]);
+    case EL_EXTRA_TIME:
+      RaiseScore(level.score[SC_TIME_BONUS]);
+      break;
+    case EL_KEY_1:
+    case EL_KEY_2:
+    case EL_KEY_3:
+    case EL_KEY_4:
+      RaiseScore(level.score[SC_KEY]);
       break;
     default:
+      RaiseScore(element_info[element].collect_score);
       break;
   }
 }
@@ -6704,7 +9115,7 @@ void RequestQuitGame(boolean ask_if_really_quit)
     else
 #endif
     {
-      game_status = MAINMENU;
+      game_status = GAME_MODE_MAIN;
       DrawMainMenu();
     }
   }
@@ -6775,7 +9186,7 @@ void CreateGameButtons()
 {
   int i;
 
-  for (i=0; i<NUM_GAME_BUTTONS; i++)
+  for (i = 0; i < NUM_GAME_BUTTONS; i++)
   {
     Bitmap *gd_bitmap = graphic_info[IMG_GLOBAL_DOOR].bitmap;
     struct GadgetInfo *gi;
@@ -6841,7 +9252,7 @@ void FreeGameButtons()
 {
   int i;
 
-  for (i=0; i<NUM_GAME_BUTTONS; i++)
+  for (i = 0; i < NUM_GAME_BUTTONS; i++)
     FreeGadget(game_gadget[i]);
 }
 
@@ -6849,7 +9260,7 @@ static void MapGameButtons()
 {
   int i;
 
-  for (i=0; i<NUM_GAME_BUTTONS; i++)
+  for (i = 0; i < NUM_GAME_BUTTONS; i++)
     MapGadget(game_gadget[i]);
 }
 
@@ -6857,7 +9268,7 @@ void UnmapGameButtons()
 {
   int i;
 
-  for (i=0; i<NUM_GAME_BUTTONS; i++)
+  for (i = 0; i < NUM_GAME_BUTTONS; i++)
     UnmapGadget(game_gadget[i]);
 }
 
@@ -6865,7 +9276,7 @@ static void HandleGameButtons(struct GadgetInfo *gi)
 {
   int id = gi->custom_id;
 
-  if (game_status != PLAYING)
+  if (game_status != GAME_MODE_PLAYING)
     return;
 
   switch (id)
@@ -6912,7 +9323,10 @@ static void HandleGameButtons(struct GadgetInfo *gi)
       else if (audio.music_available)
       { 
 	setup.sound = setup.sound_music = TRUE;
-	PlayMusic(level_nr);
+
+	SetAudioMode(setup.sound);
+
+	PlayLevelMusic();
       }
       break;
 
@@ -6920,14 +9334,20 @@ static void HandleGameButtons(struct GadgetInfo *gi)
       if (setup.sound_loops)
 	setup.sound_loops = FALSE;
       else if (audio.loops_available)
+      {
 	setup.sound = setup.sound_loops = TRUE;
+	SetAudioMode(setup.sound);
+      }
       break;
 
     case SOUND_CTRL_ID_SIMPLE:
       if (setup.sound_simple)
 	setup.sound_simple = FALSE;
       else if (audio.sound_available)
+      {
 	setup.sound = setup.sound_simple = TRUE;
+	SetAudioMode(setup.sound);
+      }
       break;
 
     default: