X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fgame.c;h=d0ffb3d24e0508366d23eff83488a606c6ab2f2f;hb=1903a68d7b7917ed45655391ecf5aaf995124eff;hp=8db4cefb8a6c0183add60ec991e90ae445e7cf7c;hpb=a750ba6776fdfb711f5da2e6094c8010cd19645a;p=rocksndiamonds.git

diff --git a/src/game.c b/src/game.c
index 8db4cefb..d0ffb3d2 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"
@@ -89,6 +89,13 @@
 #define DOUBLE_PLAYER_SPEED(p)	(HALVE_MOVE_DELAY((p)->move_delay_value))
 #define HALVE_PLAYER_SPEED(p)	(DOUBLE_MOVE_DELAY((p)->move_delay_value))
 
+#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))
+
 /* game button identifiers */
 #define GAME_CTRL_ID_STOP		0
 #define GAME_CTRL_ID_PAUSE		1
@@ -99,114 +106,202 @@
 
 #define NUM_GAME_BUTTONS		6
 
+
 /* forward declaration for internal use */
+
+static void InitBeltMovement(void);
 static void CloseAllOpenTimegates(void);
 static void CheckGravityMovement(struct PlayerInfo *);
 static void KillHeroUnlessProtected(int, int);
 
-void PlaySoundLevel(int, int, int);
-void PlaySoundLevelAction(int, int, int);
-void PlaySoundLevelElementAction(int, int, 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 PlaySoundLevelActionIfLoop(int, int, int);
+static void StopSoundLevelActionIfLoop(int, int, int);
 
 static void MapGameButtons();
 static void HandleGameButtons(struct GadgetInfo *);
 
 static struct GadgetInfo *game_gadget[NUM_GAME_BUTTONS];
 
-#define SND_ACTION_UNKNOWN		0
-#define SND_ACTION_WAITING		1
-#define SND_ACTION_MOVING		2
-#define SND_ACTION_DIGGING		3
-#define SND_ACTION_COLLECTING		4
-#define SND_ACTION_PASSING		5
-#define SND_ACTION_IMPACT		6
-#define SND_ACTION_PUSHING		7
-#define SND_ACTION_ACTIVATING		8
-#define SND_ACTION_ACTIVE		9
 
-#define NUM_SND_ACTIONS			10
+/* ------------------------------------------------------------------------- */
+/* definition of elements that automatically change to other elements after  */
+/* a specified time, eventually calling a function when changing             */
+/* ------------------------------------------------------------------------- */
 
-static struct
-{
-  char *text;
-  int value;
-  boolean is_loop;
-} sound_action_properties[] =
-{
-  /* insert _all_ loop sound actions here */
-  { ".waiting",		SND_ACTION_WAITING,	TRUE },
-  { ".moving",		SND_ACTION_MOVING,	TRUE }, /* continuos moving */
-  { ".active",		SND_ACTION_ACTIVE,	TRUE },
-  { ".growing",		SND_ACTION_UNKNOWN,	TRUE },
-  { ".attacking",	SND_ACTION_UNKNOWN,	TRUE },
-
-  /* other (non-loop) sound actions are optional */
-  { ".stepping",	SND_ACTION_MOVING,	FALSE }, /* discrete moving */
-  { ".digging",		SND_ACTION_DIGGING,	FALSE },
-  { ".collecting",	SND_ACTION_COLLECTING,	FALSE },
-  { ".passing",		SND_ACTION_PASSING,	FALSE },
-  { ".impact",		SND_ACTION_IMPACT,	FALSE },
-  { ".pushing",		SND_ACTION_PUSHING,	FALSE },
-  { ".activating",	SND_ACTION_ACTIVATING,	FALSE },
-  { NULL,		0,			0 },
-};
-static int element_action_sound[MAX_NUM_ELEMENTS][NUM_SND_ACTIONS];
-static boolean is_loop_sound[NUM_SOUND_FILES];
+/* forward declaration for changer functions */
+static void InitBuggyBase(int x, int y);
+static void WarnBuggyBase(int x, int y);
 
-#define IS_LOOP_SOUND(x)	(is_loop_sound[x])
+static void InitTrap(int x, int y);
+static void ActivateTrap(int x, int y);
+static void ChangeActiveTrap(int x, int y);
 
+static void InitRobotWheel(int x, int y);
+static void RunRobotWheel(int x, int y);
+static void StopRobotWheel(int x, int y);
 
-#ifdef DEBUG
-#if 0
-static unsigned int getStateCheckSum(int counter)
+static void InitTimegateWheel(int x, int y);
+static void RunTimegateWheel(int x, int y);
+
+struct ChangingElementInfo
 {
-  int x, y;
-  unsigned int mult = 1;
-  unsigned int checksum = 0;
-  /*
-  static short lastFeld[MAX_LEV_FIELDX][MAX_LEV_FIELDY];
-  */
-  static boolean first_game = TRUE;
+  int base_element;
+  int next_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);
+};
 
-  for (y=0; y<lev_fieldy; y++) for(x=0; x<lev_fieldx; x++)
+static struct ChangingElementInfo changing_element_list[] =
+{
   {
-    /*
-    if (counter == 3)
-    {
-      if (first_game)
-	lastFeld[x][y] = Feld[x][y];
-      else if (lastFeld[x][y] != Feld[x][y])
-	printf("DIFF: [%d][%d]: lastFeld == %d != %d == Feld\n",
-	       x, y, lastFeld[x][y], Feld[x][y]);
-    }
-    */
+    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_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
+  },
 
-    checksum += mult++ * Ur[x][y];
-    checksum += mult++ * Feld[x][y];
+  {
+    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
+  },
 
-    /*
-    checksum += mult++ * MovPos[x][y];
-    checksum += mult++ * MovDir[x][y];
-    checksum += mult++ * MovDelay[x][y];
-    checksum += mult++ * Store[x][y];
-    checksum += mult++ * Store2[x][y];
-    checksum += mult++ * StorePlayer[x][y];
-    checksum += mult++ * Frame[x][y];
-    checksum += mult++ * AmoebaNr[x][y];
-    checksum += mult++ * JustStopped[x][y];
-    checksum += mult++ * Stop[x][y];
-    */
+  {
+    EL_UNDEFINED,
+    EL_UNDEFINED,
+    -1,
+    NULL,
+    NULL,
+    NULL
   }
+};
 
-  if (counter == 3 && first_game)
-    first_game = FALSE;
-
-  return checksum;
-}
-#endif
-#endif
-
+static struct ChangingElementInfo changing_element[MAX_NUM_ELEMENTS];
 
+#define IS_AUTO_CHANGING(e)  (changing_element[e].base_element != EL_UNDEFINED)
 
 
 void GetPlayerConfig()
@@ -231,33 +326,33 @@ 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);
@@ -282,7 +377,9 @@ static int getBeltDirFromBeltSwitchElement(int element)
 
 static void InitField(int x, int y, boolean init_game)
 {
-  switch (Feld[x][y])
+  int element = Feld[x][y];
+
+  switch (element)
   {
     case EL_SP_MURPHY:
       if (init_game)
@@ -292,17 +389,21 @@ static void InitField(int x, int y, boolean init_game)
 	  Feld[x][y] = EL_SP_MURPHY_CLONE;
 	  break;
 	}
+	else
+	{
+	  stored_player[0].use_murphy_graphic = TRUE;
+	}
 
-	Feld[x][y] = EL_PLAYER1;
+	Feld[x][y] = EL_PLAYER_1;
       }
       /* no break! */
-    case EL_PLAYER1:
-    case EL_PLAYER2:
-    case EL_PLAYER3:
-    case EL_PLAYER4:
+    case EL_PLAYER_1:
+    case EL_PLAYER_2:
+    case EL_PLAYER_3:
+    case EL_PLAYER_4:
       if (init_game)
       {
-	struct PlayerInfo *player = &stored_player[Feld[x][y] - EL_PLAYER1];
+	struct PlayerInfo *player = &stored_player[Feld[x][y] - EL_PLAYER_1];
 	int jx = player->jx, jy = player->jy;
 
 	player->present = TRUE;
@@ -334,15 +435,15 @@ static void InitField(int x, int y, boolean init_game)
 
     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:
@@ -391,7 +492,7 @@ 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;
@@ -421,31 +522,31 @@ static void InitField(int x, int y, boolean init_game)
       Feld[x][y] = EL_EMPTY;
       break;
 
-    case EL_EM_KEY1_FILE:
-      Feld[x][y] = EL_EM_KEY1;
+    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;
 
-    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]);
@@ -475,6 +576,8 @@ static void InitField(int x, int y, boolean init_game)
       break;
 
     default:
+      if (IS_CUSTOM_ELEMENT(element) && CAN_MOVE(element))
+	InitMovDir(x, y);
       break;
   }
 }
@@ -487,106 +590,16 @@ void DrawGameDoorValues()
     for (j=0; j<4; j++)
       if (stored_player[i].key[j])
 	DrawMiniGraphicExt(drawto, DX_KEYS + j * MINI_TILEX, DY_KEYS,
-			   GFX_SCHLUESSEL1 + 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->dynamite, 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);
-}
-
-
-/*
-  =============================================================================
-  InitGameSound()
-  -----------------------------------------------------------------------------
-  initialize sound effect lookup table for element actions
-  =============================================================================
-*/
-
-void InitGameSound()
-{
-  int sound_effect_properties[NUM_SOUND_FILES];
-  int i, j;
-
-#if 0
-  debug_print_timestamp(0, NULL);
-#endif
-
-  for (i=0; i<MAX_NUM_ELEMENTS; i++)
-    for (j=0; j<NUM_SND_ACTIONS; j++)
-      element_action_sound[i][j] = -1;
-
-  for (i=0; i<NUM_SOUND_FILES; i++)
-  {
-    int len_effect_text = strlen(sound_files[i].token);
-
-    sound_effect_properties[i] = SND_ACTION_UNKNOWN;
-    is_loop_sound[i] = FALSE;
-
-    /* determine all loop sounds and identify certain sound classes */
-
-    for (j=0; sound_action_properties[j].text; j++)
-    {
-      int len_action_text = strlen(sound_action_properties[j].text);
-
-      if (len_action_text < len_effect_text &&
-	  strcmp(&sound_files[i].token[len_effect_text - len_action_text],
-		 sound_action_properties[j].text) == 0)
-      {
-	sound_effect_properties[i] = sound_action_properties[j].value;
-
-	if (sound_action_properties[j].is_loop)
-	  is_loop_sound[i] = TRUE;
-      }
-    }
-
-    /* associate elements and some selected sound actions */
-
-    for (j=0; j<MAX_NUM_ELEMENTS; j++)
-    {
-      if (element_info[j].sound_class_name)
-      {
-	int len_class_text = strlen(element_info[j].sound_class_name);
-
-	if (len_class_text + 1 < len_effect_text &&
-	    strncmp(sound_files[i].token,
-		    element_info[j].sound_class_name, len_class_text) == 0 &&
-	    sound_files[i].token[len_class_text] == '.')
-	{
-	  int sound_action_value = sound_effect_properties[i];
-
-	  element_action_sound[j][sound_action_value] = i;
-	}
-      }
-    }
-  }
-
-#if 0
-  debug_print_timestamp(0, "InitGameEngine");
-#endif
-
-#if 0
-  /* TEST ONLY */
-  {
-    int element = EL_SAND;
-    int sound_action = SND_ACTION_DIGGING;
-    int j = 0;
-
-    while (sound_action_properties[j].text)
-    {
-      if (sound_action_properties[j].value == sound_action)
-	printf("element %d, sound action '%s'  == %d\n",
-	       element, sound_action_properties[j].text,
-	       element_action_sound[element][sound_action]);
-      j++;
-    }
-  }
-#endif
+	   int2str(TimeLeft, 3), FONT_TEXT_2);
 }
 
 
@@ -602,9 +615,13 @@ static void InitGameEngine()
 {
   int i;
 
+  /* 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",
@@ -622,34 +639,48 @@ static void InitGameEngine()
   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 changing elements information */
+  for (i=0; i<MAX_NUM_ELEMENTS; i++)
   {
-    static int ep_em_slippery_wall[] =
-    {
-      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);
+    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;
+  }
 
-    for (i=0; i<ep_em_slippery_wall_num; i++)
-    {
-      if (level.em_slippery_gems)	/* special EM style gems behaviour */
-	Elementeigenschaften2[ep_em_slippery_wall[i]] |=
-	  EP_BIT_EM_SLIPPERY_WALL;
-      else
-	Elementeigenschaften2[ep_em_slippery_wall[i]] &=
-	  ~EP_BIT_EM_SLIPPERY_WALL;
-    }
+  /* add changing elements from pre-defined list */
+  i = 0;
+  while (changing_element_list[i].base_element != EL_UNDEFINED)
+  {
+    struct ChangingElementInfo *ce = &changing_element_list[i];
+    int element = ce->base_element;
 
-    /* "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))
-      Elementeigenschaften2[EL_WALL_GROWING_ACTIVE] |= EP_BIT_EM_SLIPPERY_WALL;
-    else
-      Elementeigenschaften2[EL_WALL_GROWING_ACTIVE] &=~EP_BIT_EM_SLIPPERY_WALL;
+    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;
+
+    i++;
+  }
+
+  /* add changing elements from custom element configuration */
+  for (i=0; i < NUM_CUSTOM_ELEMENTS; i++)
+  {
+    int element = EL_CUSTOM_START + i;
+    struct ElementChangeInfo *change = &element_info[element].change;
+
+    /* only add custom elements that change after fixed/random frame delay */
+    if (!CAN_CHANGE(element) || !HAS_CHANGE_EVENT(element, CE_DELAY))
+      continue;
+
+    changing_element[element].base_element = element;
+    changing_element[element].next_element = change->successor;
+    changing_element[element].change_delay = (change->delay_fixed *
+					      change->delay_frames);
   }
 }
 
@@ -689,7 +720,7 @@ void InitGame()
     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;
@@ -718,15 +749,24 @@ void InitGame()
     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->actual_frame_counter = 0;
+    player->use_murphy_graphic = FALSE;
+    player->use_disk_red_graphic = FALSE;
 
-    player->frame_reset_delay = 0;
+    player->actual_frame_counter = 0;
 
     player->last_move_dir = MV_NO_MOVING;
     player->is_moving = FALSE;
 
+    player->is_moving = FALSE;
+    player->is_waiting = FALSE;
+    player->is_digging = FALSE;
+    player->is_collecting = FALSE;
+
     player->move_delay       = game.initial_move_delay;
     player->move_delay_value = game.initial_move_delay_value;
 
@@ -771,7 +811,7 @@ 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;
@@ -795,13 +835,18 @@ void InitGame()
     {
       Feld[x][y] = Ur[x][y];
       MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
-      Store[x][y] = Store2[x][y] = StorePlayer[x][y] = 0;
-      Frame[x][y] = 0;
-      GfxAction[x][y] = GFX_ACTION_DEFAULT;
+      ChangeDelay[x][y] = 0;
+      Store[x][y] = Store2[x][y] = StorePlayer[x][y] = Back[x][y] = 0;
       AmoebaNr[x][y] = 0;
       JustStopped[x][y] = 0;
       Stop[x][y] = FALSE;
+      ExplodePhase[x][y] = 0;
       ExplodeField[x][y] = EX_NO_EXPLOSION;
+
+      GfxFrame[x][y] = 0;
+      GfxAction[x][y] = ACTION_DEFAULT;
+      GfxRandom[x][y] = INIT_GFX_RANDOM();
+      GfxElement[x][y] = EL_UNDEFINED;
     }
   }
 
@@ -820,6 +865,8 @@ void InitGame()
     }
   }
 
+  InitBeltMovement();
+
   game.emulation = (emulate_bd ? EMU_BOULDERDASH :
 		    emulate_sb ? EMU_SOKOBAN :
 		    emulate_sp ? EMU_SUPAPLEX : EMU_NONE);
@@ -959,7 +1006,6 @@ void InitGame()
 
   DrawLevel();
   DrawAllPlayers();
-  FadeToFront();
 
   /* after drawing the level, correct some elements */
   if (game.timegate_time_left == 0)
@@ -969,21 +1015,22 @@ void InitGame()
     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(pix[PIX_DOOR], drawto,
+  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), FS_SMALL, FC_YELLOW);
+    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), FS_SMALL, FC_SPECIAL3);
+		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);
   }
 
@@ -998,16 +1045,16 @@ void InitGame()
   MapTapeButtons();
 
   /* copy actual game door content to door double buffer for OpenDoor() */
-  BlitBitmap(drawto, pix[PIX_DB_DOOR],
+  BlitBitmap(drawto, bitmap_db_door,
 	     DX, DY, DXSIZE, DYSIZE, DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY1);
 
   OpenDoor(DOOR_OPEN_ALL);
 
-  PlaySoundStereo(SND_GAME_STARTING, SOUND_MAX_RIGHT);
+  PlaySoundStereo(SND_GAME_STARTING, SOUND_MIDDLE);
   if (setup.sound_music)
     PlayMusic(level_nr);
 
-  KeyboardAutoRepeatOff();
+  KeyboardAutoRepeatOffUnlessAutoplay();
 
   if (options.debug)
   {
@@ -1093,30 +1140,66 @@ 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)
+	  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;
+	    }
 	  }
 	}
       }
@@ -1154,27 +1237,30 @@ void GameWon()
   if (local_player->MovPos)
     return;
 
+  if (tape.playing && tape.auto_play)
+    tape.auto_play_level_solved = TRUE;
+
   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)
@@ -1187,20 +1273,20 @@ 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)
@@ -1211,10 +1297,6 @@ void GameWon()
       StopSound(SND_GAME_LEVELTIME_BONUS);
   }
 
-#if 0
-  FadeSounds();
-#endif
-
   /* Hero disappears */
   DrawLevelField(ExitX, ExitY);
   BackToFront();
@@ -1243,7 +1325,7 @@ void GameWon()
 
   if ((hi_pos = NewHiScore()) >= 0) 
   {
-    game_status = HALLOFFAME;
+    game_status = GAME_MODE_SCORES;
     DrawHallOfFame(hi_pos);
     if (raise_level)
     {
@@ -1253,7 +1335,7 @@ void GameWon()
   }
   else
   {
-    game_status = MAINMENU;
+    game_status = GAME_MODE_MAIN;
     if (raise_level)
     {
       level_nr++;
@@ -1325,22 +1407,55 @@ 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();
+}
+
+static void ResetGfxAnimation(int x, int y)
+{
+  GfxFrame[x][y] = 0;
+  GfxAction[x][y] = ACTION_DEFAULT;
+}
+
 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);
 
-  MovDir[x][y] = direction;
-  MovDir[newx][newy] = direction;
+  if (!JustStopped[x][y] || direction != MovDir[x][y])
+    ResetGfxAnimation(x, y);
+
+  MovDir[newx][newy] = MovDir[x][y] = direction;
 
   if (Feld[newx][newy] == EL_EMPTY)
     Feld[newx][newy] = EL_BLOCKED;
 
   if (direction == MV_DOWN && CAN_FALL(element))
-    GfxAction[x][y] = GFX_ACTION_FALLING;
+    GfxAction[x][y] = ACTION_FALLING;
   else
-    GfxAction[x][y] = GFX_ACTION_MOVING;
+    GfxAction[x][y] = ACTION_MOVING;
+
+  GfxFrame[newx][newy] = GfxFrame[x][y];
+  GfxAction[newx][newy] = GfxAction[x][y];
+  GfxRandom[newx][newy] = GfxRandom[x][y];
 }
 
 void Moving2Blocked(int x, int y, int *goes_to_x, int *goes_to_y)
@@ -1412,9 +1527,11 @@ static int MovingOrBlocked2ElementIfNotLeaving(int x, int y)
 static void RemoveField(int x, int y)
 {
   Feld[x][y] = EL_EMPTY;
+  GfxElement[x][y] = EL_UNDEFINED;
   MovPos[x][y] = 0;
   MovDir[x][y] = 0;
   MovDelay[x][y] = 0;
+  ChangeDelay[x][y] = 0;
 }
 
 void RemoveMovingField(int x, int y)
@@ -1441,7 +1558,7 @@ void RemoveMovingField(int x, int y)
       (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] == EL_AMOEBA_DROPPING))
     Feld[oldx][oldy] = get_next_element(Feld[oldx][oldy]);
   else
     Feld[oldx][oldy] = EL_EMPTY;
@@ -1451,7 +1568,8 @@ void RemoveMovingField(int x, int y)
   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] = GFX_ACTION_DEFAULT;
+  ChangeDelay[oldx][oldy] = ChangeDelay[newx][newy] = 0;
+  GfxAction[oldx][oldy] = GfxAction[newx][newy] = ACTION_DEFAULT;
 
   DrawLevelField(oldx, oldy);
   DrawLevelField(newx, newy);
@@ -1466,49 +1584,55 @@ void DrawDynamite(int x, int y)
   if (!IN_SCR_FIELD(sx, sy) || IS_PLAYER(x, y))
     return;
 
-  if (Store[x][y])
-    DrawGraphic(sx, sy, el2img(Store[x][y]), 0);
+  if (IS_WALKABLE_INSIDE(Back[x][y]))
+    return;
 
-  frame = getGraphicAnimationFrame(graphic, 96 - MovDelay[x][y]);
+  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);
 
-  /*
-  printf("-> %d: %d [%d]\n", graphic, frame, MovDelay[x][y]);
-  */
+  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, 0);
+    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)
 {
-  if (MovDelay[x][y])		/* dynamite is still waiting to explode */
+  if (MovDelay[x][y] != 0)	/* dynamite is still waiting to explode */
   {
     MovDelay[x][y]--;
-    if (MovDelay[x][y])
-    {
-      if (!(MovDelay[x][y] % 6))
-	PlaySoundLevelAction(x, y, SND_ACTION_ACTIVE);
-
-      if (IS_ACTIVE_BOMB(Feld[x][y]))
-      {
-	int delay = (Feld[x][y] == EL_DYNAMITE_ACTIVE ? 12 : 6);
 
-	if (!(MovDelay[x][y] % delay))
-	  DrawDynamite(x, y);
-      }
+    if (MovDelay[x][y] != 0)
+    {
+      DrawDynamite(x, y);
+      PlaySoundLevelActionIfLoop(x, y, ACTION_ACTIVE);
 
       return;
     }
   }
 
-  if (Feld[x][y] == EL_DYNAMITE_ACTIVE)
+#if 1
+  StopSoundLevelActionIfLoop(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);
 }
@@ -1532,6 +1656,10 @@ void Explode(int ex, int ey, int phase, int mode)
   {
     int center_element = Feld[ex][ey];
 
+    /* remove things displayed in background while burning dynamite */
+    if (!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) */
@@ -1540,7 +1668,7 @@ 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 element;
 
@@ -1557,8 +1685,16 @@ void Explode(int ex, int ey, int phase, int mode)
 	RemoveMovingField(x, y);
       }
 
-      if (IS_MASSIVE(element) || element == EL_FLAMES)
+#if 1
+      if (IS_EXPLOSION_PROOF(element))
+	continue;
+#else
+      if ((IS_INDESTRUCTIBLE(element) &&
+	   (game.engine_version < VERSION_IDENT(2,2,0) ||
+	    (!IS_WALKABLE_OVER(element) && !IS_WALKABLE_UNDER(element)))) ||
+	  element == EL_FLAMES)
 	continue;
+#endif
 
       if (IS_PLAYER(x, y) && SHIELD_ON(PLAYERINFO(x, y)))
       {
@@ -1572,6 +1708,11 @@ void Explode(int ex, int ey, int phase, int mode)
 	continue;
       }
 
+      /* save walkable background elements while explosion on same tile */
+      if (IS_INDESTRUCTIBLE(element))
+	Back[x][y] = element;
+
+      /* ignite explodable elements reached by other explosion */
       if (element == EL_EXPLOSION)
 	element = Store2[x][y];
 
@@ -1579,16 +1720,16 @@ void Explode(int ex, int ey, int phase, int mode)
       {
 	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;
@@ -1607,10 +1748,14 @@ 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][x - ex + 1][y - ey + 1];
+      else if (IS_CUSTOM_ELEMENT(center_element))
+	Store[x][y] =
+	  element_info[center_element].content[x - ex + 1][y - ey + 1];
       else if (element == EL_WALL_EMERALD)
 	Store[x][y] = EL_EMERALD;
       else if (element == EL_WALL_DIAMOND)
@@ -1627,7 +1772,7 @@ 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
 	Store[x][y] = EL_EMPTY;
 
       if (x != ex || y != ey ||
@@ -1637,21 +1782,23 @@ void Explode(int ex, int ey, int phase, int mode)
       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;
+      GfxElement[x][y] = EL_UNDEFINED;
       MovDir[x][y] = MovPos[x][y] = 0;
       AmoebaNr[x][y] = 0;
-      Frame[x][y] = 1;
+      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;
   }
@@ -1662,7 +1809,7 @@ void Explode(int ex, int ey, int phase, int mode)
   x = ex;
   y = ey;
 
-  Frame[x][y] = (phase < last_phase ? phase + 1 : 0);
+  ExplodePhase[x][y] = (phase < last_phase ? phase + 1 : 0);
 
   if (phase == first_phase_after_start)
   {
@@ -1681,7 +1828,7 @@ 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;
@@ -1697,9 +1844,14 @@ void Explode(int ex, int ey, int phase, int mode)
 
     element = Feld[x][y] = Store[x][y];
     Store[x][y] = Store2[x][y] = 0;
-    MovDir[x][y] = MovPos[x][y] = MovDelay[x][y] = 0;
+
+    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] = ChangeDelay[x][y] = 0;
     InitField(x, y, FALSE);
-    if (CAN_MOVE(element) || COULD_MOVE(element))
+    if (CAN_MOVE(element))
       InitMovDir(x, y);
     DrawLevelField(x, y);
 
@@ -1715,14 +1867,19 @@ void Explode(int ex, int ey, int phase, int mode)
     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);
   }
 }
@@ -1743,7 +1900,7 @@ 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++;
@@ -1759,7 +1916,7 @@ void DynaExplode(int ex, int ey)
       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];
@@ -1807,13 +1964,13 @@ 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:
@@ -1830,50 +1987,83 @@ void Bang(int x, int y)
   }
 }
 
-void Blurb(int x, int y)
+void SplashAcid(int x, int y)
 {
   int element = Feld[x][y];
 
   if (element != EL_ACID_SPLASH_LEFT &&
-      element != EL_ACID_SPLASH_RIGHT)	/* start */
+      element != EL_ACID_SPLASH_RIGHT)
   {
     PlaySoundLevel(x, y, SND_ACID_SPLASHING);
+
     if (IN_LEV_FIELD(x-1, y) && IS_FREE(x-1, y) &&
 	(!IN_LEV_FIELD(x-1, y-1) ||
 	 !CAN_FALL(MovingOrBlocked2Element(x-1, y-1))))
-    {
       Feld[x-1][y] = EL_ACID_SPLASH_LEFT;
-    }
+
     if (IN_LEV_FIELD(x+1, y) && IS_FREE(x+1, y) &&
 	(!IN_LEV_FIELD(x+1, y-1) ||
 	 !CAN_FALL(MovingOrBlocked2Element(x+1, y-1))))
-    {
       Feld[x+1][y] = EL_ACID_SPLASH_RIGHT;
-    }
   }
-  else								/* go on */
+}
+
+static void InitBeltMovement()
+{
+  static int belt_base_element[4] =
+  {
+    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] =
   {
-    int graphic = (element == EL_ACID_SPLASH_LEFT ?
-		   IMG_ACID_SPLASH_LEFT :
-		   IMG_ACID_SPLASH_RIGHT);
+    EL_CONVEYOR_BELT_1_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_2_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_3_LEFT_ACTIVE,
+    EL_CONVEYOR_BELT_4_LEFT_ACTIVE
+  };
 
-    if (!MovDelay[x][y])	/* initialize animation counter */
-      MovDelay[x][y] = 9;
+  int x, y, i, j;
+
+  /* set frame order for belt animation graphic according to belt direction */
+  for (i=0; i<4; i++)
+  {
+    int belt_nr = i;
 
-    if (MovDelay[x][y])		/* continue animation */
+    for (j=0; j<3; j++)
     {
-      MovDelay[x][y]--;
-      if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(graphic, 8 - MovDelay[x][y]);
+      int element = belt_base_active_element[belt_nr] + j;
+      int graphic = el2img(element);
 
-        DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
-      }
+      if (game.belt_dir[i] == MV_LEFT)
+	graphic_info[graphic].anim_mode &= ~ANIM_REVERSE;
+      else
+	graphic_info[graphic].anim_mode |=  ANIM_REVERSE;
+    }
+  }
+
+  for(y=0; y<lev_fieldy; y++)
+  {
+    for(x=0; x<lev_fieldx; x++)
+    {
+      int element = Feld[x][y];
 
-      if (!MovDelay[x][y])
+      for (i=0; i<4; i++)
       {
-	Feld[x][y] = EL_EMPTY;
-	DrawLevelField(x, y);
+	if (IS_BELT(element) && game.belt_dir[i] != MV_NO_MOVING)
+	{
+	  int e_belt_nr = getBeltNrFromBeltElement(element);
+	  int belt_nr = i;
+
+	  if (e_belt_nr == belt_nr)
+	  {
+	    int belt_part = Feld[x][y] - belt_base_element[belt_nr];
+
+	    Feld[x][y] = belt_base_active_element[belt_nr] + belt_part;
+	  }
+	}
       }
     }
   }
@@ -1883,24 +2073,24 @@ 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] =
   {
@@ -1932,9 +2122,9 @@ static void ToggleBeltSwitch(int x, int y)
     int graphic = el2img(element);
 
     if (belt_dir == MV_LEFT)
-      new_graphic_info[graphic].anim_mode &= ~ANIM_REVERSE;
+      graphic_info[graphic].anim_mode &= ~ANIM_REVERSE;
     else
-      new_graphic_info[graphic].anim_mode |=  ANIM_REVERSE;
+      graphic_info[graphic].anim_mode |=  ANIM_REVERSE;
   }
 
   for (yy=0; yy<lev_fieldy; yy++)
@@ -2003,13 +2193,21 @@ static void ToggleSwitchgateSwitch(int x, int y)
 	       element == EL_SWITCHGATE_OPENING)
       {
 	Feld[xx][yy] = EL_SWITCHGATE_CLOSING;
+#if 1
+	PlaySoundLevelAction(xx, yy, ACTION_CLOSING);
+#else
 	PlaySoundLevel(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
+	PlaySoundLevelAction(xx, yy, ACTION_OPENING);
+#else
+	PlaySoundLevel(xx, yy, SND_SWITCHGATE_OPENING);
+#endif
       }
     }
   }
@@ -2121,8 +2319,9 @@ 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 */
   {
@@ -2130,51 +2329,70 @@ void Impact(int x, int y)
       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));
+				       MovDir[x][y+1] != MV_DOWN ||
+				       MovPos[x][y+1] <= TILEY / 2));
     if (object_hit)
       smashed = MovingOrBlocked2Element(x, y+1);
+
+    impact = (lastline || object_hit);
   }
 
   if (!lastline && smashed == EL_ACID)	/* element falls into acid */
   {
-    Blurb(x, y);
+    SplashAcid(x, y);
     return;
   }
 
+  if (impact)
+  {
+    ResetGfxAnimation(x, y);
+    DrawLevelField(x, y);
+  }
+
+#if 1
+  if (impact && CAN_EXPLODE_IMPACT(element))
+#else
   if ((element == EL_BOMB ||
        element == EL_SP_DISK_ORANGE ||
        element == EL_DX_SUPABOMB) &&
-      (lastline || object_hit))	/* element is bomb */
+      (lastline || object_hit))		/* element is bomb */
+#endif
   {
     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);
     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);
     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);
     }
     return;
   }
 
+#if 1
+  if (object_hit)		/* check which object was hit */
+#else
   if (!lastline && object_hit)		/* check which object was hit */
+#endif
   {
-    if (CAN_CHANGE(element) && 
-	(smashed == EL_MAGIC_WALL || smashed == EL_BD_MAGIC_WALL))
+    if (CAN_PASS_MAGIC_WALL(element) && 
+	(smashed == EL_MAGIC_WALL ||
+	 smashed == EL_BD_MAGIC_WALL))
     {
       int xx, yy;
       int activated_magic_wall =
@@ -2195,55 +2413,79 @@ void Impact(int x, int y)
 			    SND_BD_MAGIC_WALL_ACTIVATING));
     }
 
-    if (IS_PLAYER(x, y+1))
+    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);
+	Bang(x, y + 1);
 	return;
       }
     }
-    else if ((element == EL_SP_INFOTRON || element == EL_SP_ZONK) &&
-	     (smashed == EL_SP_SNIKSNAK || smashed == EL_SP_ELECTRON ||
+    else if ((element == EL_SP_INFOTRON ||
+	      element == EL_SP_ZONK) &&
+	     (smashed == EL_SP_SNIKSNAK ||
+	      smashed == EL_SP_ELECTRON ||
 	      smashed == EL_SP_DISK_ORANGE))
     {
-      Bang(x, y+1);
+      Bang(x, y + 1);
       return;
     }
+#if 1
+    else if (CAN_SMASH_EVERYTHING(element))
+#else
     else if (element == EL_ROCK ||
 	     element == EL_SP_ZONK ||
 	     element == EL_BD_ROCK)
+#endif
     {
-      if (IS_ENEMY(smashed) ||
-	  smashed == EL_BOMB || smashed == EL_SP_DISK_ORANGE ||
+      if (IS_CLASSIC_ENEMY(smashed) ||
+#if 1
+	  CAN_EXPLODE_SMASHED(smashed))
+#else
+	  smashed == EL_BOMB ||
+	  smashed == EL_SP_DISK_ORANGE ||
 	  smashed == EL_DX_SUPABOMB ||
-	  smashed == EL_SATELLITE || smashed == EL_PIG ||
-	  smashed == EL_DRAGON || smashed == EL_MOLE)
+	  smashed == EL_SATELLITE ||
+	  smashed == EL_PIG ||
+	  smashed == EL_DRAGON ||
+	  smashed == EL_MOLE)
+#endif
       {
-	Bang(x, y+1);
+	Bang(x, y + 1);
 	return;
       }
-      else if (!IS_MOVING(x, y+1))
+#if 1
+      else if (!IS_MOVING(x, y + 1) && !IS_BLOCKED(x, y + 1))
+#else
+      else if (!IS_MOVING(x, y + 1))
+#endif
       {
-	if (smashed == EL_LAMP || smashed == EL_LAMP_ACTIVE)
+	if (smashed == EL_LAMP ||
+	    smashed == EL_LAMP_ACTIVE)
 	{
-	  Bang(x, y+1);
+	  Bang(x, y + 1);
 	  return;
 	}
 	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;
+	  PlaySoundLevel(x, y, SND_NUT_BREAKING);
 	  RaiseScoreElement(EL_NUT);
 	  return;
 	}
@@ -2255,7 +2497,11 @@ void Impact(int x, int y)
 	}
 	else if (smashed == EL_DIAMOND)
 	{
+#if 1
+	  Feld[x][y+1] = EL_DIAMOND_BREAKING;
+#else
 	  Feld[x][y+1] = EL_EMPTY;
+#endif
 	  PlaySoundLevel(x, y, SND_DIAMOND_BREAKING);
 	  return;
 	}
@@ -2283,16 +2529,16 @@ void Impact(int x, int y)
        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);
+      PlaySoundLevel(x, y, SND_MAGIC_WALL_FILLING);
     else if (Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE)
-      PlaySoundLevel(x, y, SND_BD_MAGIC_WALL_CHANGING);
+      PlaySoundLevel(x, y, SND_BD_MAGIC_WALL_FILLING);
 
     return;
   }
 
   /* play sound of object that hits the ground */
   if (lastline || object_hit)
-    PlaySoundLevelElementAction(x, y, element, SND_ACTION_IMPACT);
+    PlaySoundLevelElementAction(x, y, element, ACTION_IMPACT);
 }
 
 void TurnRound(int x, int y)
@@ -2302,26 +2548,26 @@ void TurnRound(int x, int y)
     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];
@@ -2404,11 +2650,11 @@ void TurnRound(int x, int y)
 
     if (IN_LEV_FIELD(left_x, left_y) &&
 	(IS_FREE_OR_PLAYER(left_x, left_y) ||
-	 IS_MAMPF2(Feld[left_x][left_y])))
+	 IS_FOOD_DARK_YAMYAM(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])))
+	 IS_FOOD_DARK_YAMYAM(Feld[right_x][right_y])))
       can_turn_right = TRUE;
 
     if (can_turn_left && can_turn_right)
@@ -2455,13 +2701,13 @@ void TurnRound(int x, int y)
     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])))
+	(IS_FREE(left_x, left_y) || IS_FOOD_PIG(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])))
+	(IS_FREE(right_x, right_y) || IS_FOOD_PIG(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])))
+	(IS_FREE(move_x, move_y) || IS_FOOD_PIG(Feld[move_x][move_y])))
       can_move_on = TRUE;
 
     if (can_turn_left &&
@@ -2513,7 +2759,7 @@ void TurnRound(int x, int y)
       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]))
+	!IS_FOOD_PIG(Feld[x+move_xy[MovDir[x][y]].x][y+move_xy[MovDir[x][y]].y]))
       MovDir[x][y] = old_move_dir;
 
     MovDelay[x][y] = 0;
@@ -2621,7 +2867,7 @@ void TurnRound(int x, int y)
       }
     }
 
-    if (element == EL_ROBOT && ZX>=0 && ZY>=0)
+    if (element == EL_ROBOT && ZX >= 0 && ZY >= 0)
     {
       attr_x = ZX;
       attr_y = ZY;
@@ -2640,8 +2886,8 @@ void TurnRound(int x, int y)
 
       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)
 	{
@@ -2653,21 +2899,21 @@ 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))
@@ -2681,13 +2927,13 @@ void TurnRound(int x, int y)
 
       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) &&
@@ -2695,11 +2941,11 @@ void TurnRound(int x, int y)
 	     Feld[newx][newy] == EL_ACID ||
 	     (element == EL_PENGUIN &&
 	      (Feld[newx][newy] == EL_EXIT_OPEN ||
-	       IS_MAMPF3(Feld[newx][newy])))))
+	       IS_FOOD_PENGUIN(Feld[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) &&
@@ -2707,7 +2953,7 @@ void TurnRound(int x, int y)
 	     Feld[newx][newy] == EL_ACID ||
 	     (element == EL_PENGUIN &&
 	      (Feld[newx][newy] == EL_EXIT_OPEN ||
-	       IS_MAMPF3(Feld[newx][newy])))))
+	       IS_FOOD_PENGUIN(Feld[newx][newy])))))
 	  return;
 
 	MovDir[x][y] = old_move_dir;
@@ -2715,6 +2961,148 @@ void TurnRound(int x, int y)
       }
     }
   }
+  else if (element_info[element].move_pattern == MV_ALL_DIRECTIONS)
+  {
+    boolean can_turn_left = FALSE, can_turn_right = FALSE;
+
+    if (IN_LEV_FIELD(left_x, left_y) &&
+	(IS_FREE(left_x, left_y) ||
+	 (DONT_COLLIDE_WITH(element) && IS_FREE_OR_PLAYER(left_x, left_y))))
+      can_turn_left = TRUE;
+    if (IN_LEV_FIELD(right_x, right_y) &&
+	(IS_FREE(right_x, right_y) ||
+	 (DONT_COLLIDE_WITH(element) && IS_FREE_OR_PLAYER(right_x, right_y))))
+      can_turn_right = TRUE;
+
+    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 (element_info[element].move_pattern == MV_HORIZONTAL ||
+	   element_info[element].move_pattern == MV_VERTICAL)
+  {
+    if (element_info[element].move_pattern & old_move_dir)
+      MovDir[x][y] = back_dir;
+    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);
+
+    MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+  }
+  else if (element_info[element].move_pattern & MV_ANY_DIRECTION)
+  {
+    MovDir[x][y] = element_info[element].move_pattern;
+    MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+  }
+  else if (element_info[element].move_pattern == MV_ALONG_LEFT_SIDE)
+  {
+    if (IN_LEV_FIELD(left_x, left_y) &&
+	(IS_FREE(left_x, left_y) ||
+	 (DONT_COLLIDE_WITH(element) && IS_FREE_OR_PLAYER(left_x, left_y))))
+      MovDir[x][y] = left_dir;
+    else if (!IN_LEV_FIELD(move_x, move_y) ||
+	     (!IS_FREE(move_x, move_y) &&
+	      (!DONT_COLLIDE_WITH(element) || !IS_FREE_OR_PLAYER(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 (element_info[element].move_pattern == MV_ALONG_RIGHT_SIDE)
+  {
+    if (IN_LEV_FIELD(right_x, right_y) &&
+	(IS_FREE(right_x, right_y) ||
+	 (DONT_COLLIDE_WITH(element) && IS_FREE_OR_PLAYER(right_x, right_y))))
+      MovDir[x][y] = right_dir;
+    else if (!IN_LEV_FIELD(move_x, move_y) ||
+	     (!IS_FREE(move_x, move_y) &&
+	      (!DONT_COLLIDE_WITH(element) || !IS_FREE_OR_PLAYER(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 (element_info[element].move_pattern == MV_TOWARDS_PLAYER ||
+	   element_info[element].move_pattern == MV_AWAY_FROM_PLAYER)
+  {
+    int attr_x = -1, attr_y = -1;
+    int newx, newy;
+    boolean move_away =
+      (element_info[element].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 (IN_LEV_FIELD(newx, newy) && (IS_FREE(newx, newy) ||
+				       (DONT_COLLIDE_WITH(element) &&
+					IS_FREE_OR_PLAYER(newx, newy)) ||
+				       Feld[newx][newy] == EL_ACID))
+	return;
+
+      MovDir[x][y] =
+	new_move_dir & (!first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+      Moving2Blocked(x, y, &newx, &newy);
+
+      if (IN_LEV_FIELD(newx, newy) && (IS_FREE(newx, newy) ||
+				       (DONT_COLLIDE_WITH(element) &&
+					IS_FREE_OR_PLAYER(newx, newy)) ||
+				       Feld[newx][newy] == EL_ACID))
+	return;
+
+      MovDir[x][y] = old_move_dir;
+    }
+  }
 }
 
 static boolean JustBeingPushed(int x, int y)
@@ -2740,14 +3128,16 @@ static boolean JustBeingPushed(int x, int y)
 
 void StartMoving(int x, int y)
 {
+  boolean use_spring_bug = (game.engine_version < VERSION_IDENT(2,2,0));
+  boolean started_moving = FALSE;	/* some elements can fall _and_ move */
   int element = Feld[x][y];
 
   if (Stop[x][y])
     return;
 
-  GfxAction[x][y] = GFX_ACTION_DEFAULT;
+  GfxAction[x][y] = ACTION_DEFAULT;
 
-  if (CAN_FALL(element) && y<lev_fieldy-1)
+  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 (JustBeingPushed(x, y))
@@ -2758,9 +3148,15 @@ void StartMoving(int x, int y)
       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;
+#if 1
+	PlaySoundLevelAction(x, y, ACTION_EMPTYING);
+#else
 	PlaySoundLevel(x, y, SND_QUICKSAND_EMPTYING);
+#endif
       }
       else if (Feld[x][y+1] == EL_QUICKSAND_EMPTY)
       {
@@ -2778,22 +3174,34 @@ void StartMoving(int x, int 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
+	PlaySoundLevelAction(x, y, ACTION_FILLING);
+#else
+	PlaySoundLevel(x, y, SND_QUICKSAND_FILLING);
+#endif
       }
     }
     else if ((element == EL_ROCK || element == EL_BD_ROCK) &&
 	     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;
+#if 1
+      PlaySoundLevelAction(x, y, ACTION_FILLING);
+#else
       PlaySoundLevel(x, y, SND_QUICKSAND_FILLING);
+#endif
     }
     else if (element == EL_MAGIC_WALL_FULL)
     {
       if (IS_FREE(x, y+1))
       {
 	InitMovingField(x, y, MV_DOWN);
+	started_moving = TRUE;
+
 	Feld[x][y] = EL_MAGIC_WALL_EMPTYING;
 	Store[x][y] = EL_CHANGED(Store[x][y]);
       }
@@ -2820,6 +3228,8 @@ void StartMoving(int x, int y)
       if (IS_FREE(x, y+1))
       {
 	InitMovingField(x, y, MV_DOWN);
+	started_moving = TRUE;
+
 	Feld[x][y] = EL_BD_MAGIC_WALL_EMPTYING;
 	Store[x][y] = EL_CHANGED2(Store[x][y]);
       }
@@ -2841,34 +3251,59 @@ void StartMoving(int x, int y)
 	Store[x][y] = 0;
       }
     }
-    else if (CAN_CHANGE(element) &&
+    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 :
 	 EL_BD_MAGIC_WALL_FILLING);
       Store[x][y] = element;
     }
+#if 0
     else if (CAN_SMASH(element) && Feld[x][y+1] == EL_ACID)
+#else
+    else if (CAN_FALL(element) && Feld[x][y+1] == EL_ACID)
+#endif
     {
-      Blurb(x, y);
+      SplashAcid(x, y);
+
       InitMovingField(x, y, MV_DOWN);
+      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])
     {
       Impact(x, y);
     }
-    else if (IS_FREE(x, y+1))
+    else if (IS_FREE(x, y+1) && element == EL_SPRING && use_spring_bug)
+    {
+      if (MovDir[x][y] == MV_NO_MOVING)
+      {
+	InitMovingField(x, y, MV_DOWN);
+	started_moving = TRUE;
+      }
+    }
+    else if (IS_FREE(x, y+1) || Feld[x][y+1] == EL_DIAMOND_BREAKING)
     {
+      if (JustStopped[x][y])	/* prevent animation from being restarted */
+	MovDir[x][y] = MV_DOWN;
+
       InitMovingField(x, y, MV_DOWN);
+      started_moving = TRUE;
     }
     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:
@@ -2902,6 +3337,7 @@ void StartMoving(int x, int y)
 	  left = !(right = RND(2));
 
 	InitMovingField(x, y, left ? MV_LEFT : MV_RIGHT);
+	started_moving = TRUE;
       }
     }
     else if (IS_BELT_ACTIVE(Feld[x][y+1]))
@@ -2915,12 +3351,15 @@ void StartMoving(int x, int y)
 	  (belt_dir == MV_RIGHT && right_is_free))
       {
 	InitMovingField(x, y, belt_dir);
-	GfxAction[x][y] = GFX_ACTION_DEFAULT;
+	started_moving = TRUE;
+
+	GfxAction[x][y] = ACTION_DEFAULT;
       }
     }
   }
 
-  if (CAN_MOVE(element))	/* not "else if" because of EL_SPRING */
+  /* not "else if" because of EL_SPRING */
+  if (CAN_MOVE(element) && !started_moving)
   {
     int newx, newy;
 
@@ -2930,27 +3369,32 @@ void StartMoving(int x, int y)
 	&& JustBeingPushed(x, y))
       return;
 
+#if 0
+#if 0
     if (element == EL_SPRING && MovDir[x][y] == MV_DOWN)
       Feld[x][y + 1] = EL_EMPTY;	/* was set to EL_BLOCKED above */
+#else
+    if (element == EL_SPRING && MovDir[x][y] != MV_NO_MOVING)
+    {
+      Moving2Blocked(x, y, &newx, &newy);
+      if (Feld[newx][newy] == EL_BLOCKED)
+	Feld[newx][newy] = EL_EMPTY;	/* was set to EL_BLOCKED above */
+    }
+#endif
+#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 &&
+	  !(element_info[element].move_pattern & MV_ANY_DIRECTION))
       {
-#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]);
-#endif
+
 	if (MovDelay[x][y] && (element == EL_BUG ||
 			       element == EL_SPACESHIP ||
 			       element == EL_SP_SNIKSNAK ||
@@ -2964,37 +3408,50 @@ 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 (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
+	GfxAction[x][y] = ACTION_WAITING;
+      }
 
-	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);
-	}
+      if (element == EL_ROBOT ||
+#if 0
+	  element == EL_PACMAN ||
+#endif
+	  element == EL_YAMYAM ||
+	  element == EL_DARK_YAMYAM)
+      {
+#if 0
+	DrawLevelElementAnimation(x, y, element);
+#else
+	DrawLevelElementAnimationIfNeeded(x, y, element);
+#endif
+	PlaySoundLevelAction(x, y, ACTION_WAITING);
       }
       else if (element == EL_SP_ELECTRON)
-	DrawGraphicAnimation(x, y, IMG_SP_ELECTRON);
+	DrawLevelElementAnimationIfNeeded(x, y, element);
       else if (element == EL_DRAGON)
       {
 	int i;
 	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_FLAMES_LEFT1 :
-		       dir == MV_RIGHT	? IMG_FLAMES_RIGHT1 :
-		       dir == MV_UP	? IMG_FLAMES_UP1 :
-		       dir == MV_DOWN	? IMG_FLAMES_DOWN1 : IMG_EMPTY);
+	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, -1);
 
 	for (i=1; i<=3; i++)
@@ -3003,15 +3460,14 @@ void StartMoving(int x, int y)
 	  int sx = SCREENX(xx), 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);
@@ -3031,37 +3487,41 @@ void StartMoving(int x, int y)
 
       if (MovDelay[x][y])	/* element still has to wait some time */
       {
-	PlaySoundLevelAction(x, y, SND_ACTION_WAITING);
+	PlaySoundLevelAction(x, y, ACTION_WAITING);
 
 	return;
       }
+
+      GfxAction[x][y] = ACTION_MOVING;
     }
 
     /* 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) && 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)
     {
-      Blurb(x, y);
+      SplashAcid(x, y);
       Store[x][y] = EL_ACID;
     }
     else if (element == EL_PENGUIN && IN_LEV_FIELD(newx, newy))
@@ -3071,7 +3531,7 @@ void StartMoving(int x, int y)
 	Feld[x][y] = EL_EMPTY;
 	DrawLevelField(x, y);
 
-	PlaySoundLevel(newx, newy, SND_PENGUIN_PASSING_EXIT);
+	PlaySoundLevel(newx, newy, SND_PENGUIN_PASSING);
 	if (IN_SCR_FIELD(SCREENX(newx), SCREENY(newy)))
 	  DrawGraphicThruMask(SCREENX(newx),SCREENY(newy), el2img(element), 0);
 
@@ -3082,7 +3542,7 @@ 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);
@@ -3091,6 +3551,8 @@ void StartMoving(int x, int y)
       }
       else if (!IS_FREE(newx, newy))
       {
+	GfxAction[x][y] = ACTION_WAITING;
+
 	if (IS_PLAYER(x, y))
 	  DrawPlayerField(x, y);
 	else
@@ -3100,7 +3562,7 @@ 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);
@@ -3110,7 +3572,7 @@ void StartMoving(int x, int y)
 	  DrawLevelField(newx, newy);
 	}
 
-	PlaySoundLevel(x, y, SND_PIG_EATING);
+	PlaySoundLevel(x, y, SND_PIG_DIGGING);
       }
       else if (!IS_FREE(newx, newy))
       {
@@ -3142,7 +3604,9 @@ void StartMoving(int x, int y)
 	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)
 	{
@@ -3174,10 +3638,10 @@ void StartMoving(int x, int y)
 	DrawLevelField(newx, newy);
       }
 
-      PlaySoundLevel(x, y, SND_YAMYAM_EATING);
+      PlaySoundLevel(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])
       {
@@ -3195,7 +3659,7 @@ void StartMoving(int x, int y)
 	DrawLevelField(newx, newy);
       }
 
-      PlaySoundLevel(x, y, SND_DARK_YAMYAM_EATING);
+      PlaySoundLevel(x, y, SND_DARK_YAMYAM_DIGGING);
     }
     else if ((element == EL_PACMAN || element == EL_MOLE)
 	     && IN_LEV_FIELD(newx, newy) && IS_AMOEBOID(Feld[newx][newy]))
@@ -3211,7 +3675,7 @@ void StartMoving(int x, int y)
       if (element == EL_MOLE)
       {
 	Feld[newx][newy] = EL_AMOEBA_SHRINKING;
-	PlaySoundLevel(x, y, SND_MOLE_EATING);
+	PlaySoundLevel(x, y, SND_MOLE_DIGGING);
 	MovDelay[newx][newy] = 0;	/* start amoeba shrinking delay */
 	return;				/* wait for shrinking amoeba */
       }
@@ -3219,7 +3683,7 @@ void StartMoving(int x, int y)
       {
 	Feld[newx][newy] = EL_EMPTY;
 	DrawLevelField(newx, newy);
-	PlaySoundLevel(x, y, SND_PACMAN_EATING);
+	PlaySoundLevel(x, y, SND_PACMAN_DIGGING);
       }
     }
     else if (element == EL_MOLE && IN_LEV_FIELD(newx, newy) &&
@@ -3235,30 +3699,37 @@ void StartMoving(int x, int y)
 
       TurnRound(x, y);
 
-      if (element == EL_BUG || element == EL_SPACESHIP ||
+#if 1
+      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)
-	DrawGraphicAnimation(x, y, el2img(element));
+      else if (element == EL_BD_BUTTERFLY ||
+	       element == EL_BD_FIREFLY)
+	DrawLevelElementAnimationIfNeeded(x, y, element);
       else if (element == EL_SATELLITE)
-	DrawGraphicAnimation(x, y, IMG_SATELLITE);
+	DrawLevelElementAnimationIfNeeded(x, y, element);
       else if (element == EL_SP_ELECTRON)
-	DrawGraphicAnimation(x, y, IMG_SP_ELECTRON);
+	DrawLevelElementAnimationIfNeeded(x, y, element);
+#endif
 
       if (DONT_TOUCH(element))
 	TestIfBadThingTouchesHero(x, y);
 
-      PlaySoundLevelAction(x, y, SND_ACTION_WAITING);
+#if 0
+      PlaySoundLevelAction(x, y, ACTION_WAITING);
+#endif
 
       return;
     }
 
     InitMovingField(x, y, MovDir[x][y]);
 
-    PlaySoundLevelAction(x, y, SND_ACTION_MOVING);
+    PlaySoundLevelAction(x, y, ACTION_MOVING);
   }
 
   if (MovDir[x][y])
@@ -3273,9 +3744,9 @@ void ContinueMoving(int x, int y)
   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;
+  int step = (horiz_move ? dx : dy) * TILEX / MOVE_DELAY_NORMAL_SPEED;
 
-  if (element == EL_AMOEBA_DROP || element == EL_AMOEBA_DRIPPING)
+  if (element == EL_AMOEBA_DROP || element == EL_AMOEBA_DROPPING)
     step /= 2;
   else if (element == EL_QUICKSAND_FILLING ||
 	   element == EL_QUICKSAND_EMPTYING)
@@ -3290,6 +3761,8 @@ void ContinueMoving(int x, int y)
     step /= 2;
   else if (element == EL_SPRING && horiz_move)
     step *= 2;
+  else if (IS_CUSTOM_ELEMENT(element))
+    step = SIGN(step) * element_info[element].move_stepsize;
 
 #if OLD_GAME_BEHAVIOUR
   else if (CAN_FALL(element) && horiz_move && !IS_SP_ELEMENT(element))
@@ -3302,6 +3775,7 @@ void ContinueMoving(int x, int y)
   {
     Feld[x][y] = EL_EMPTY;
     Feld[newx][newy] = element;
+    MovPos[x][y] = 0;	/* force "not moving" for "crumbled sand" */
 
     if (element == EL_MOLE)
     {
@@ -3325,7 +3799,7 @@ void ContinueMoving(int x, int y)
 	yy = y + xy[i][1];
 
 	if (IN_LEV_FIELD(xx, yy) && Feld[xx][yy] == EL_SAND)
-	  DrawLevelField(xx, yy);	/* for "DrawCrumbledSand()" */
+	  DrawLevelField(xx, yy);	/* for "crumbled sand" */
       }
     }
 
@@ -3367,7 +3841,7 @@ void ContinueMoving(int x, int y)
 	Feld[x][y] = EL_BD_MAGIC_WALL_DEAD;
       element = Feld[newx][newy] = Store[x][y];
     }
-    else if (element == EL_AMOEBA_DRIPPING)
+    else if (element == EL_AMOEBA_DROPPING)
     {
       Feld[x][y] = get_next_element(element);
       element = Feld[newx][newy] = Store[x][y];
@@ -3381,15 +3855,30 @@ void ContinueMoving(int x, int y)
     MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
     MovDelay[newx][newy] = 0;
 
+    /* copy element change control values to new field */
+    ChangeDelay[newx][newy] = ChangeDelay[x][y];
+
+    /* copy animation control values to new field */
+    GfxFrame[newx][newy]  = GfxFrame[x][y];
     GfxAction[newx][newy] = GfxAction[x][y];	/* keep action one frame */
-    GfxAction[x][y] = GFX_ACTION_DEFAULT;
+    GfxRandom[newx][newy] = GfxRandom[x][y];	/* keep same random value */
 
+    ResetGfxAnimation(x, y);	/* reset animation values for old field */
+
+#if 1
 #if 0
     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;
+#endif
 #endif
 
     DrawLevelField(x, y);
@@ -3408,20 +3897,11 @@ void ContinueMoving(int x, int y)
       TestIfFriendTouchesBadThing(newx, newy);
 
     if (CAN_SMASH(element) && direction == MV_DOWN &&
-	(newy == lev_fieldy-1 || !IS_FREE(x, newy+1)))
+	(newy == lev_fieldy - 1 || !IS_FREE(x, newy + 1)))
       Impact(x, newy);
   }
   else				/* still moving on */
   {
-#if 0
-    if (GfxAction[x][y] == GFX_ACTION_DEFAULT)
-    {
-      printf("reset GfxAction...\n");
-
-      GfxAction[x][y] = GFX_ACTION_MOVING;
-    }
-#endif
-
     DrawLevelField(x, y);
   }
 }
@@ -3588,7 +4068,7 @@ void AmoebeUmwandelnBD(int ax, int ay, int new_element)
       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;
@@ -3616,10 +4096,14 @@ void AmoebeWaechst(int x, int y)
 
     if (DelayReached(&sound_delay, sound_delay_value))
     {
+#if 1
+      PlaySoundLevelElementAction(x, y, Store[x][y], ACTION_GROWING);
+#else
       if (Store[x][y] == EL_BD_AMOEBA)
-	PlaySoundLevel(x, y, SND_BD_AMOEBA_CREATING);
+	PlaySoundLevel(x, y, SND_BD_AMOEBA_GROWING);
       else
-	PlaySoundLevel(x, y, SND_AMOEBA_CREATING);
+	PlaySoundLevel(x, y, SND_AMOEBA_GROWING);
+#endif
       sound_delay_value = 30;
     }
   }
@@ -3629,10 +4113,10 @@ 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])
@@ -3684,6 +4168,7 @@ 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] =
   {
@@ -3700,6 +4185,9 @@ 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));
 
@@ -3805,18 +4293,22 @@ 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
+    PlaySoundLevelAction(newax, neway, ACTION_GROWING);
+#else
+    PlaySoundLevel(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;
@@ -3831,8 +4323,12 @@ 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;
 
@@ -3862,7 +4358,7 @@ 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++;
@@ -3884,7 +4380,7 @@ void Life(int ax, int ay)
       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;
@@ -3894,306 +4390,72 @@ void Life(int ax, int ay)
   }
 
   if (changed)
-    PlaySoundLevel(ax, ay, element == EL_GAMEOFLIFE ? SND_GAMEOFLIFE_CREATING :
-		   SND_BIOMAZE_CREATING);
+    PlaySoundLevel(ax, ay, element == EL_BIOMAZE ? SND_BIOMAZE_GROWING :
+		   SND_GAME_OF_LIFE_GROWING);
 }
 
-void RobotWheel(int x, int y)
+static void InitRobotWheel(int x, int y)
 {
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
-
-  if (MovDelay[x][y])		/* wait some time before next frame */
-  {
-    MovDelay[x][y]--;
-    if (MovDelay[x][y])
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_ROBOT_WHEEL_ACTIVE, -1);
-
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_ROBOT_WHEEL_ACTIVE, frame);
-      }
-
-      PlaySoundLevel(x, y, SND_ROBOT_WHEEL_ACTIVE);
-
-      return;
-    }
-  }
+  ChangeDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+}
 
-  Feld[x][y] = EL_ROBOT_WHEEL;
-  DrawLevelField(x, y);
+static void RunRobotWheel(int x, int y)
+{
+  PlaySoundLevel(x, y, SND_ROBOT_WHEEL_ACTIVE);
+}
 
+static void StopRobotWheel(int x, int y)
+{
   if (ZX == x && ZY == y)
     ZX = ZY = -1;
 }
 
-void TimegateWheel(int x, int y)
+static void InitTimegateWheel(int x, int y)
 {
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+  ChangeDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+}
 
-  if (MovDelay[x][y])		/* wait some time before next frame */
-  {
-    MovDelay[x][y]--;
-    if (MovDelay[x][y])
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_TIMEGATE_SWITCH_ACTIVE, -1);
+static void RunTimegateWheel(int x, int y)
+{
+  PlaySoundLevel(x, y, SND_TIMEGATE_SWITCH_ACTIVE);
+}
 
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_TIMEGATE_SWITCH_ACTIVE, frame);
-      }
+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);
 
-      PlaySoundLevel(x, y, SND_TIMEGATE_SWITCH_ACTIVE);
+    if (IS_ANIMATED(graphic))
+      DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
 
-      return;
-    }
+    return;
   }
 
-  Feld[x][y] = EL_TIMEGATE_SWITCH;
-  DrawLevelField(x, y);
-
-  /* !!! THIS LOOKS WRONG !!! */
-  if (ZX == x && ZY == y)
-    ZX = ZY = -1;
-}
-
-void NussKnacken(int x, int y)
-{
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = 7;
-
-  if (MovDelay[x][y])		/* wait some time before next frame */
-  {
-    MovDelay[x][y]--;
-    if (MovDelay[x][y])
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_NUT_CRACKING,
-					     6 - MovDelay[x][y]);
-
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_NUT_CRACKING, frame);
-      }
-
-      return;
-    }
-  }
-
-  Feld[x][y] = EL_EMERALD;
-  DrawLevelField(x, y);
-}
-
-void BreakingPearl(int x, int y)
-{
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = 9;
-
-  if (MovDelay[x][y])		/* wait some time before next frame */
-  {
-    MovDelay[x][y]--;
-    if (MovDelay[x][y])
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_PEARL_BREAKING,
-					     8 - MovDelay[x][y]);
-
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_PEARL_BREAKING, frame);
-      }
-
-      return;
-    }
-  }
-
-  Feld[x][y] = EL_EMPTY;
-  DrawLevelField(x, y);
-}
-
-void SiebAktivieren(int x, int y, int type)
-{
-  int graphic = (type == 1 ? IMG_MAGIC_WALL_FULL : IMG_BD_MAGIC_WALL_FULL);
-
-  DrawGraphicAnimation(x, y, graphic);
-}
-
-void AusgangstuerPruefen(int x, int y)
-{
-  if (local_player->gems_still_needed > 0 ||
-      local_player->sokobanfields_still_needed > 0 ||
-      local_player->lights_still_needed > 0)
-    return;
-
   Feld[x][y] = EL_EXIT_OPENING;
 
-  PlaySoundLevel(x < LEVELX(BX1) ? LEVELX(BX1) :
-		 (x > LEVELX(BX2) ? LEVELX(BX2) : x),
-		 y < LEVELY(BY1) ? LEVELY(BY1) :
-		 (y > LEVELY(BY2) ? LEVELY(BY2) : y),
-		 SND_EXIT_OPENING);
+  PlaySoundLevelNearest(x, y, SND_CLASS_EXIT_OPENING);
 }
 
-void AusgangstuerPruefen_SP(int x, int y)
+void CheckExitSP(int x, int y)
 {
   if (local_player->gems_still_needed > 0)
-    return;
-
-  Feld[x][y] = EL_SP_EXIT_OPEN;
-
-  PlaySoundLevel(x < LEVELX(BX1) ? LEVELX(BX1) :
-		 (x > LEVELX(BX2) ? LEVELX(BX2) : x),
-		 y < LEVELY(BY1) ? LEVELY(BY1) :
-		 (y > LEVELY(BY2) ? LEVELY(BY2) : y),
-		 SND_SP_EXIT_OPENING);
-}
-
-void AusgangstuerOeffnen(int x, int y)
-{
-  int delay = 6;
-
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = 5 * delay;
-
-  if (MovDelay[x][y])		/* wait some time before next frame */
-  {
-    int tuer;
-
-    MovDelay[x][y]--;
-    tuer = MovDelay[x][y] / delay;
-
-    if (!(MovDelay[x][y] % delay))
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_EXIT_OPENING,
-					     29 - MovDelay[x][y]);
-
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_EXIT_OPENING, frame);
-      }
-
-      return;
-    }
-  }
-
-  Feld[x][y] = EL_EXIT_OPEN;
-  DrawLevelField(x, y);
-}
-
-void OpenSwitchgate(int x, int y)
-{
-  int delay = 6;
-
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = 5 * delay;
-
-  if (MovDelay[x][y])		/* wait some time before next frame */
-  {
-    MovDelay[x][y]--;
-
-    if (!(MovDelay[x][y] % delay))
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_SWITCHGATE_OPENING,
-					     29 - MovDelay[x][y]);
-
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_SWITCHGATE_OPENING, frame);
-      }
-
-      return;
-    }
-  }
-
-  Feld[x][y] = EL_SWITCHGATE_OPEN;
-  DrawLevelField(x, y);
-}
-
-void CloseSwitchgate(int x, int y)
-{
-  int delay = 6;
-
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = 5 * delay;
-
-  if (MovDelay[x][y])		/* wait some time before next frame */
   {
-    MovDelay[x][y]--;
-
-    if (!(MovDelay[x][y] % delay))
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_SWITCHGATE_CLOSING,
-					     29 - MovDelay[x][y]);
-
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_SWITCHGATE_CLOSING, frame);
-      }
-
-      return;
-    }
-  }
-
-  Feld[x][y] = EL_SWITCHGATE_CLOSED;
-  DrawLevelField(x, y);
-}
-
-void OpenTimegate(int x, int y)
-{
-  int delay = 6;
-
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = 5 * delay;
-
-  if (MovDelay[x][y])		/* wait some time before next frame */
-  {
-    MovDelay[x][y]--;
-
-    if (!(MovDelay[x][y] % delay))
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_TIMEGATE_OPENING,
-					     29 - MovDelay[x][y]);
+    int element = Feld[x][y];
+    int graphic = el2img(element);
 
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_TIMEGATE_OPENING, frame);
-      }
+    if (IS_ANIMATED(graphic))
+      DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
 
-      return;
-    }
+    return;
   }
 
-  Feld[x][y] = EL_TIMEGATE_OPEN;
-  DrawLevelField(x, y);
-}
-
-void CloseTimegate(int x, int y)
-{
-  int delay = 6;
-
-  if (!MovDelay[x][y])		/* next animation frame */
-    MovDelay[x][y] = 5 * delay;
-
-  if (MovDelay[x][y])		/* wait some time before next frame */
-  {
-    MovDelay[x][y]--;
-
-    if (!(MovDelay[x][y] % delay))
-    {
-      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      {
-	int frame = getGraphicAnimationFrame(IMG_TIMEGATE_CLOSING,
-					     29 - MovDelay[x][y]);
-
-	DrawGraphic(SCREENX(x), SCREENY(y), IMG_TIMEGATE_CLOSING, frame);
-      }
-
-      return;
-    }
-  }
+  Feld[x][y] = EL_SP_EXIT_OPEN;
 
-  Feld[x][y] = EL_TIMEGATE_CLOSED;
-  DrawLevelField(x, y);
+  PlaySoundLevelNearest(x, y, SND_CLASS_SP_EXIT_OPENING);
 }
 
 static void CloseAllOpenTimegates()
@@ -4209,7 +4471,11 @@ static void CloseAllOpenTimegates()
       if (element == EL_TIMEGATE_OPEN || element == EL_TIMEGATE_OPENING)
       {
 	Feld[x][y] = EL_TIMEGATE_CLOSING;
+#if 1
+	PlaySoundLevelAction(x, y, ACTION_CLOSING);
+#else
 	PlaySoundLevel(x, y, SND_TIMEGATE_CLOSING);
+#endif
       }
     }
   }
@@ -4221,39 +4487,37 @@ void EdelsteinFunkeln(int x, int y)
     return;
 
   if (Feld[x][y] == EL_BD_DIAMOND)
-    DrawGraphicAnimation(x, y, IMG_BD_DIAMOND);
-  else
-  {
-    if (!MovDelay[x][y])	/* next animation frame */
-      MovDelay[x][y] = 11 * !SimpleRND(500);
+    return;
 
-    if (MovDelay[x][y])		/* 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);
 
-      DrawGraphic(SCREENX(x), SCREENY(y), el2img(Feld[x][y]), 0);
+    DrawLevelElementAnimation(x, y, Feld[x][y]);
 
-      if (MovDelay[x][y])
-      {
-	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);
       }
     }
   }
@@ -4282,22 +4546,22 @@ 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);
       }
 
@@ -4312,12 +4576,16 @@ 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;
 
@@ -4337,76 +4605,83 @@ 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;
       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;
       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;
       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;
       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
+    PlaySoundLevelAction(ax, ay, ACTION_GROWING);
+#else
+    PlaySoundLevel(ax, ay, SND_EXPANDABLE_WALL_GROWING);
+#endif
 }
 
 void CheckForDragon(int x, int y)
@@ -4458,140 +4733,150 @@ void CheckForDragon(int x, int y)
   }
 }
 
-static void CheckBuggyBase(int x, int y)
+static void InitBuggyBase(int x, int y)
 {
   int element = Feld[x][y];
+  int activating_delay = FRAMES_PER_SECOND / 4;
+
+  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 ?
+     activating_delay :
+     element == EL_SP_BUGGY_BASE_ACTIVE ?
+     1 * FRAMES_PER_SECOND + RND(1 * FRAMES_PER_SECOND) : 1);
+}
 
-  if (element == EL_SP_BUGGY_BASE)
+static void WarnBuggyBase(int x, int y)
+{
+  int i;
+  static int xy[4][2] =
   {
-    if (!MovDelay[x][y])	/* wait some time before activating base */
-      MovDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
-
-    if (MovDelay[x][y])
-    {
-      MovDelay[x][y]--;
-      if (MovDelay[x][y] < 5 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-        DrawGraphic(SCREENX(x), SCREENY(y), IMG_SP_BUGGY_BASE, 0);
-      if (MovDelay[x][y])
-	return;
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
 
-      Feld[x][y] = EL_SP_BUGGY_BASE_ACTIVE;
-    }
-  }
-  else if (element == EL_SP_BUGGY_BASE_ACTIVE)
+  for (i=0; i<4; i++)
   {
-    if (!MovDelay[x][y])	/* start activating buggy base */
-      MovDelay[x][y] = 1 * FRAMES_PER_SECOND + RND(1 * FRAMES_PER_SECOND);
+    int xx = x + xy[i][0], yy = y + xy[i][1];
 
-    if (MovDelay[x][y])
+    if (IS_PLAYER(xx, yy))
     {
-      MovDelay[x][y]--;
-      if (MovDelay[x][y])
-      {
-	int i;
-	static int xy[4][2] =
-	{
-	  { 0, -1 },
-	  { -1, 0 },
-	  { +1, 0 },
-	  { 0, +1 }
-	};
-
-	if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-	{
-	  int graphic = IMG_SP_BUGGY_BASE_ACTIVE;
-	  int frame = getGraphicAnimationFrame(graphic, SimpleRND(100));
+      PlaySoundLevel(x, y, SND_SP_BUGGY_BASE_ACTIVE);
 
-          DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
-	}
+      break;
+    }
+  }
+}
 
-	for (i=0; i<4; i++)
-	{
-	  int xx = x + xy[i][0], yy = y + xy[i][1];
+static void InitTrap(int x, int y)
+{
+  ChangeDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
+}
 
-	  if (IS_PLAYER(xx, yy))
-	  {
-	    PlaySoundLevel(x, y, SND_SP_BUGGY_BASE_ACTIVE);
-	    break;
-	  }
-	}
+static void ActivateTrap(int x, int y)
+{
+  PlaySoundLevel(x, y, SND_TRAP_ACTIVATING);
+}
 
-	return;
-      }
+static void ChangeActiveTrap(int x, int y)
+{
+  int graphic = IMG_TRAP_ACTIVE;
 
-      Feld[x][y] = EL_SP_BUGGY_BASE;
-      DrawLevelField(x, y);
-    }
-  }
+  /* if new animation frame was drawn, correct crumbled sand border */
+  if (IS_NEW_FRAME(GfxFrame[x][y], graphic))
+    DrawLevelFieldCrumbledSand(x, y);
 }
 
-static void CheckTrap(int x, int y)
+static void ChangeElement(int x, int y)
 {
   int element = Feld[x][y];
 
-  if (element == EL_TRAP)
+  if (ChangeDelay[x][y] == 0)		/* initialize element change */
   {
-    if (!MovDelay[x][y])	/* wait some time before activating trap */
-      MovDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
+    ChangeDelay[x][y] = changing_element[element].change_delay + 1;
 
-    if (MovDelay[x][y])
+    if (IS_CUSTOM_ELEMENT(element) && HAS_CHANGE_EVENT(element, CE_DELAY))
     {
-      MovDelay[x][y]--;
-      if (MovDelay[x][y])
-	return;
+      int max_random_delay = element_info[element].change.delay_random;
+      int delay_frames = element_info[element].change.delay_frames;
 
-      Feld[x][y] = EL_TRAP_ACTIVE;
-      PlaySoundLevel(x, y, SND_TRAP_ACTIVATING);
+      ChangeDelay[x][y] += RND(max_random_delay * delay_frames);
     }
+
+    ResetGfxAnimation(x, y);
+    ResetRandomAnimationValue(x, y);
+
+    if (changing_element[element].pre_change_function)
+      changing_element[element].pre_change_function(x, y);
   }
-  else if (element == EL_TRAP_ACTIVE)
+
+  ChangeDelay[x][y]--;
+
+  if (ChangeDelay[x][y] != 0)		/* continue element change */
   {
-    int delay = 4;
-    int num_frames = 8;
+    int graphic = el_act_dir2img(element, GfxAction[x][y], MovDir[x][y]);
 
-    if (!MovDelay[x][y])	/* start activating trap */
-      MovDelay[x][y] = num_frames * delay;
+    if (IS_ANIMATED(graphic))
+      DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
 
-    if (MovDelay[x][y])
+    if (changing_element[element].change_function)
+      changing_element[element].change_function(x, y);
+  }
+  else					/* finish element change */
+  {
+    if (IS_MOVING(x, y))		/* never change a running system ;-) */
     {
-      MovDelay[x][y]--;
+      ChangeDelay[x][y] = 1;		/* try change after next move step */
 
-      if (MovDelay[x][y])
-      {
-	if (!(MovDelay[x][y] % delay))
-	{
-	  if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-	  {
-	    int graphic = IMG_TRAP_ACTIVE;
-	    int frame = getGraphicAnimationFrame(graphic, 31 - MovDelay[x][y]);
+      return;
+    }
 
-	    DrawGraphic(SCREENX(x),SCREENY(y), graphic, frame);
-	    DrawCrumbledSand(SCREENX(x), SCREENY(y));
-	  }
-	}
+    RemoveField(x, y);
+    Feld[x][y] = changing_element[element].next_element;
 
-	return;
-      }
+    ResetGfxAnimation(x, y);
+    ResetRandomAnimationValue(x, y);
 
-      Feld[x][y] = EL_TRAP;
-      DrawLevelField(x, y);
-    }
-  }
-}
+    InitField(x, y, FALSE);
+    if (CAN_MOVE(Feld[x][y]))
+      InitMovDir(x, y);
 
-static void DrawBeltAnimation(int x, int y, int element)
-{
-  int belt_nr = getBeltNrFromBeltActiveElement(element);
-  int belt_dir = game.belt_dir[belt_nr];
+    DrawLevelField(x, y);
 
-  if (belt_dir != MV_NO_MOVING)
-  {
-    int graphic = el2img(element);
+    if (CAN_BE_CRUMBLED(Feld[x][y]))
+    {
+      int sx = SCREENX(x), sy = SCREENY(y);
+      static int xy[4][2] =
+      {
+	{ 0, -1 },
+	{ -1, 0 },
+	{ +1, 0 },
+	{ 0, +1 }
+      };
+      int i;
 
-    DrawGraphicAnimation(x, y, graphic);
+      for(i=0; i<4; i++)
+      {
+	int xx = x + xy[i][0];
+	int yy = y + xy[i][1];
+	int sxx = sx + xy[i][0];
+	int syy = sy + xy[i][1];
+
+	if (!IN_LEV_FIELD(xx, yy) ||
+	    !IN_SCR_FIELD(sxx, syy) ||
+	    !CAN_BE_CRUMBLED(Feld[xx][yy]) ||
+	    IS_MOVING(xx, yy))
+	  continue;
+
+	DrawLevelField(xx, yy);
+      }
+    }
 
-    if (!(FrameCounter % 2))
-      PlaySoundLevel(x, y, SND_CONVEYOR_BELT_ACTIVE);
+    if (changing_element[element].post_change_function)
+      changing_element[element].post_change_function(x, y);
   }
 }
 
@@ -4599,9 +4884,6 @@ static void PlayerActions(struct PlayerInfo *player, byte player_action)
 {
   static byte stored_player_action[MAX_PLAYERS];
   static int num_stored_actions = 0;
-#if 0
-  static boolean save_tape_entry = FALSE;
-#endif
   boolean moved = FALSE, snapped = FALSE, bombed = FALSE;
   int left	= player_action & JOY_LEFT;
   int right	= player_action & JOY_RIGHT;
@@ -4620,11 +4902,6 @@ static void PlayerActions(struct PlayerInfo *player, byte player_action)
 
   if (player_action)
   {
-#if 0
-    save_tape_entry = TRUE;
-#endif
-    player->frame_reset_delay = 0;
-
     if (button1)
       snapped = SnapField(player, dx, dy);
     else
@@ -4643,20 +4920,7 @@ static void PlayerActions(struct PlayerInfo *player, byte player_action)
       }
     }
 
-#if 0
-    if (tape.recording && (moved || snapped || bombed))
-    {
-      if (bombed && !moved)
-	player_action &= JOY_BUTTON;
-
-      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
   {
@@ -4666,86 +4930,36 @@ static void PlayerActions(struct PlayerInfo *player, byte player_action)
     SnapField(player, 0, 0);
     CheckGravityMovement(player);
 
-#if 1
-    if (player->MovPos == 0)	/* needed for tape.playing */
-      player->is_moving = FALSE;
-#endif
+    if (player->MovPos == 0)
+    {
 #if 0
-    if (player->MovPos == 0)	/* needed for tape.playing */
-      player->last_move_dir = MV_NO_MOVING;
-
-    /* !!! CHECK THIS AGAIN !!!
-       (Seems to be needed for some EL_ROBOT stuff, but breaks
-       tapes when walking through pipes!)
-    */
+      printf("Trying... Player frame reset\n");
+#endif
 
-    /* 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 
+      InitPlayerGfxAnimation(player, ACTION_DEFAULT, player->MovDir);
+    }
 
-    /* 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;
+    if (player->MovPos == 0)	/* needed for tape.playing */
+      player->is_moving = FALSE;
   }
 
-#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
-
-#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 ((next_joy == JOY_LEFT || next_joy == JOY_RIGHT) &&
-	(player->MovDir != JOY_UP && player->MovDir != JOY_DOWN))
-    {
-      int dx = (next_joy == JOY_LEFT ? -1 : +1);
-
-      if (IN_LEV_FIELD(jx+dx, jy) && IS_PUSHABLE(Feld[jx+dx][jy]))
-      {
-	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);
-
-	if (tape.delay_played + push_delay >= tape.pos[tape.counter].delay)
-	{
-	  player->MovDir = next_joy;
-	  player->Frame = FrameCounter % 4;
-	  player->Pushing = TRUE;
-	}
-      }
-    }
-  }
-#endif
 }
 
 void GameActions()
 {
   static unsigned long action_delay = 0;
   unsigned long action_delay_value;
-  int sieb_x = 0, sieb_y = 0;
-  int i, x, y, element;
+  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 (game_status != PLAYING)
+  if (game_status != GAME_MODE_PLAYING)
     return;
 
   action_delay_value =
@@ -4771,7 +4985,7 @@ void GameActions()
     HandleNetworking();
 #endif
 
-    if (game_status != PLAYING)
+    if (game_status != GAME_MODE_PLAYING)
       return;
 
     if (!network_player_action_received)
@@ -4824,38 +5038,22 @@ void GameActions()
 
   ScrollScreen(NULL, SCROLL_GO_ON);
 
-
-
-#ifdef DEBUG
 #if 0
-  if (TimeFrames == 0 && local_player->active)
-  {
-    extern unsigned int last_RND();
-
-    printf("DEBUG: %03d last RND was %d \t [state checksum is %d]\n",
-	   TimePlayed, last_RND(), getStateCheckSum(TimePlayed));
-  }
-#endif
-#endif
-
-#ifdef DEBUG
-#if 0
-  if (GameFrameDelay >= 500)
-    printf("FrameCounter == %d\n", FrameCounter);
-#endif
-#endif
-
-
-
   FrameCounter++;
   TimeFrames++;
 
+  for (i=0; i<MAX_PLAYERS; i++)
+    stored_player[i].Frame++;
+#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]--;
 
+    GfxFrame[x][y]++;
+
 #if DEBUG
     if (IS_BLOCKED(x, y))
     {
@@ -4871,31 +5069,109 @@ void GameActions()
       }
     }
 #endif
-  }
+  }
+
+  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], MovDir[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
 
-  for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
-  {
-    element = Feld[x][y];
+    if (graphic_info[graphic].anim_global_sync)
+      GfxFrame[x][y] = FrameCounter;
+
+    if (ANIM_MODE(graphic) == ANIM_RANDOM &&
+	IS_NEXT_FRAME(GfxFrame[x][y], graphic))
+      ResetRandomAnimationValue(x, y);
+
+    SetRandomAnimationValue(x, y);
+
+#if 1
+    PlaySoundLevelActionIfLoop(x, y, GfxAction[x][y]);
+#endif
 
     if (IS_INACTIVE(element))
+    {
+      if (IS_ANIMATED(graphic))
+	DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
+
       continue;
+    }
+
+#if 1
+    /* this may take place after moving, so 'element' may have changed */
+    if (IS_AUTO_CHANGING(element))
+    {
+      ChangeElement(x, y);
+      element = Feld[x][y];
+      graphic = el_act_dir2img(element, GfxAction[x][y], MovDir[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], MovDir[x][y]);
+#if 0
+      if (element == EL_PACMAN)
+	printf("::: %d, %d, %d\n",
+	       IS_ANIMATED(graphic), IS_MOVING(x, y), Stop[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_YAMYAM)
+	  printf("::: %d, %d\n", graphic, GfxFrame[x][y]);
+#endif
+      }
+
       if (IS_GEM(element) || element == EL_SP_INFOTRON)
 	EdelsteinFunkeln(x, y);
     }
+    else if ((element == EL_ACID ||
+	      element == EL_EXIT_OPEN ||
+	      element == EL_SP_EXIT_OPEN ||
+	      element == EL_SP_TERMINAL ||
+	      element == EL_SP_TERMINAL_ACTIVE ||
+	      element == EL_EXTRA_TIME ||
+	      element == EL_SHIELD_NORMAL ||
+	      element == EL_SHIELD_DEADLY) &&
+	     IS_ANIMATED(graphic))
+      DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
     else if (IS_MOVING(x, y))
       ContinueMoving(x, y);
     else if (IS_ACTIVE_BOMB(element))
       CheckDynamite(x, y);
 #if 0
     else if (element == EL_EXPLOSION && !game.explosions_delayed)
-      Explode(x, y, Frame[x][y], EX_NORMAL);
+      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);
@@ -4905,90 +5181,54 @@ 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);
-    else if (element == EL_ROBOT_WHEEL_ACTIVE)
-      RobotWheel(x, y);
-    else if (element == EL_TIMEGATE_SWITCH_ACTIVE)
-      TimegateWheel(x, y);
-    else if (element == EL_ACID)
-      DrawGraphicAnimation(x, y, IMG_ACID);
-    else if (element == EL_ACID_SPLASH_LEFT ||
-	     element == EL_ACID_SPLASH_RIGHT)
-      Blurb(x, y);
-    else if (element == EL_NUT_CRACKING)
-      NussKnacken(x, y);
-    else if (element == EL_PEARL_BREAKING)
-      BreakingPearl(x, y);
     else if (element == EL_EXIT_CLOSED)
-      AusgangstuerPruefen(x, y);
+      CheckExit(x, y);
     else if (element == EL_SP_EXIT_CLOSED)
-      AusgangstuerPruefen_SP(x, y);
-    else if (element == EL_EXIT_OPENING)
-      AusgangstuerOeffnen(x, y);
-    else if (element == EL_EXIT_OPEN)
-      DrawGraphicAnimation(x, y, IMG_EXIT_OPEN);
-    else if (element == EL_SP_EXIT_OPEN)
-      DrawGraphicAnimation(x, y, IMG_SP_EXIT_OPEN);
-    else if (element == EL_WALL_GROWING_ACTIVE)
+      CheckExitSP(x, y);
+    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);
-    else if (element == EL_SP_BUGGY_BASE || element == EL_SP_BUGGY_BASE_ACTIVE)
-      CheckBuggyBase(x, y);
-    else if (element == EL_TRAP || element == EL_TRAP_ACTIVE)
-      CheckTrap(x, y);
-    else if (element == EL_SP_TERMINAL)
-      DrawGraphicAnimation(x, y, IMG_SP_TERMINAL);
-    else if (element == EL_SP_TERMINAL_ACTIVE)
-      DrawGraphicAnimation(x, y, IMG_SP_TERMINAL_ACTIVE);
-    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);
-    else if (element == EL_EXTRA_TIME)
-      DrawGraphicAnimation(x, y, IMG_EXTRA_TIME);
-    else if (element == EL_SHIELD_NORMAL)
-      DrawGraphicAnimation(x, y, IMG_SHIELD_NORMAL);
-    else if (element == EL_SHIELD_DEADLY)
-      DrawGraphicAnimation(x, y, IMG_SHIELD_DEADLY);
+#if 0
+    else if (IS_AUTO_CHANGING(element))
+      ChangeElement(x, y);
+#endif
+    else if (element == EL_EXPLOSION)
+      ;	/* drawing of correct explosion animation is handled separately */
+    else if (IS_ANIMATED(graphic) && !IS_AUTO_CHANGING(element))
+      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);
 
     if (game.magic_wall_active)
     {
-      boolean sieb = FALSE;
       int jx = local_player->jx, jy = local_player->jy;
 
-      if (element == EL_MAGIC_WALL_FULL ||
-	  element == EL_MAGIC_WALL_ACTIVE ||
-	  element == EL_MAGIC_WALL_EMPTYING)
-      {
-	SiebAktivieren(x, y, 1);
-	sieb = TRUE;
-      }
-      else if (element == EL_BD_MAGIC_WALL_FULL ||
-	       element == EL_BD_MAGIC_WALL_ACTIVE ||
-	       element == EL_BD_MAGIC_WALL_EMPTYING)
-      {
-	SiebAktivieren(x, y, 2);
-	sieb = TRUE;
-      }
-
       /* play the element sound at the position nearest to the player */
-      if (sieb && ABS(x-jx)+ABS(y-jy) < ABS(sieb_x-jx)+ABS(sieb_y-jy))
+      if ((element == EL_MAGIC_WALL_FULL ||
+	   element == EL_MAGIC_WALL_ACTIVE ||
+	   element == EL_MAGIC_WALL_EMPTYING ||
+	   element == EL_BD_MAGIC_WALL_FULL ||
+	   element == EL_BD_MAGIC_WALL_ACTIVE ||
+	   element == EL_BD_MAGIC_WALL_EMPTYING) &&
+	  ABS(x-jx) + ABS(y-jy) < ABS(magic_wall_x-jx) + ABS(magic_wall_y-jy))
       {
-	sieb_x = x;
-	sieb_y = y;
+	magic_wall_x = x;
+	magic_wall_y = y;
       }
     }
   }
@@ -5044,7 +5284,7 @@ void GameActions()
       if (ExplodeField[x][y])
 	Explode(x, y, EX_PHASE_START, ExplodeField[x][y]);
       else if (element == EL_EXPLOSION)
-	Explode(x, y, Frame[x][y], EX_NORMAL);
+	Explode(x, y, ExplodePhase[x][y], EX_NORMAL);
 
       ExplodeField[x][y] = EX_NO_EXPLOSION;
     }
@@ -5056,14 +5296,14 @@ void GameActions()
   {
     if (!(game.magic_wall_time_left % 4))
     {
-      int element = Feld[sieb_x][sieb_y];
+      int element = Feld[magic_wall_x][magic_wall_y];
 
       if (element == EL_BD_MAGIC_WALL_FULL ||
 	  element == EL_BD_MAGIC_WALL_ACTIVE ||
 	  element == EL_BD_MAGIC_WALL_EMPTYING)
-	PlaySoundLevel(sieb_x, sieb_y, SND_BD_MAGIC_WALL_ACTIVE);
+	PlaySoundLevel(magic_wall_x, magic_wall_y, SND_BD_MAGIC_WALL_ACTIVE);
       else
-	PlaySoundLevel(sieb_x, sieb_y, SND_MAGIC_WALL_ACTIVE);
+	PlaySoundLevel(magic_wall_x, magic_wall_y, SND_MAGIC_WALL_ACTIVE);
     }
 
     if (game.magic_wall_time_left > 0)
@@ -5149,16 +5389,16 @@ 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++)
 	  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();
@@ -5181,6 +5421,33 @@ 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
 }
 
 static boolean AllPlayersInSight(struct PlayerInfo *player, int x, int y)
@@ -5275,11 +5542,18 @@ static void CheckGravityMovement(struct PlayerInfo *player)
 
     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;
   }
 }
 
+/*
+  MoveFigureOneStep()
+  -----------------------------------------------------------------------------
+  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 MoveFigureOneStep(struct PlayerInfo *player,
 			  int dx, int dy, int real_dx, int real_dy)
 {
@@ -5308,12 +5582,12 @@ 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)
     {
-      Blurb(jx, jy);
-      Feld[jx][jy] = EL_PLAYER1;
+      SplashAcid(jx, jy);
+      Feld[jx][jy] = EL_PLAYER_1;
       InitMovingField(jx, jy, MV_DOWN);
       Store[jx][jy] = EL_ACID;
       ContinueMoving(jx, jy);
@@ -5374,7 +5648,8 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
     int original_move_delay_value = player->move_delay_value;
 
 #if DEBUG
-    printf("THIS SHOULD ONLY HAPPEN WITH PRE-1.2 LEVEL TAPES.\n");
+    printf("THIS SHOULD ONLY HAPPEN WITH PRE-1.2 LEVEL TAPES. [%ld]\n",
+	   tape.counter);
 #endif
 
     /* scroll remaining steps with finest movement resolution */
@@ -5475,14 +5750,16 @@ 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->Pushing)
+    player->Frame = 0;
 #endif
+#endif
+
+  player->StepFrame = 0;
 
   if (moved & MF_MOVING)
   {
@@ -5491,7 +5768,7 @@ 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;
@@ -5527,8 +5804,6 @@ 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;
@@ -5541,7 +5816,6 @@ 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;
@@ -5554,7 +5828,7 @@ void ScrollFigure(struct PlayerInfo *player, int mode)
 
   if (player->MovPos == 0)
   {
-    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);
@@ -5646,11 +5920,11 @@ 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;
@@ -5710,11 +5984,11 @@ 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))
@@ -5822,8 +6096,8 @@ 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;
@@ -5842,8 +6116,8 @@ 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;
@@ -5866,7 +6140,7 @@ void BuryHero(struct PlayerInfo *player)
   if (!player->active)
     return;
 
-  PlaySoundLevel(jx, jy, SND_PLAYER_DYING);
+  PlaySoundLevel(jx, jy, SND_CLASS_PLAYER_DYING);
   PlaySoundLevel(jx, jy, SND_GAME_LOSING);
 
   player->GameOver = TRUE;
@@ -5895,6 +6169,39 @@ 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)
 {
@@ -5907,24 +6214,37 @@ int DigField(struct PlayerInfo *player,
   int element;
 
   if (player->MovPos == 0)
+  {
+    player->is_digging = FALSE;
+    player->is_collecting = FALSE;
+  }
+
+  if (player->MovPos == 0)	/* last pushing move finished */
     player->Pushing = FALSE;
 
-  if (mode == DF_NO_PUSH)
+  if (mode == DF_NO_PUSH)	/* player just stopped pushing */
   {
     player->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)))
+#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 },
@@ -5938,7 +6258,7 @@ 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 */
@@ -5951,6 +6271,12 @@ int DigField(struct PlayerInfo *player,
 
   element = Feld[x][y];
 
+#if 1
+  if (mode == DF_SNAP && !IS_SNAPPABLE(element) &&
+      game.engine_version >= VERSION_IDENT(2,2,0))
+    return MF_NO_ACTION;
+#endif
+
   switch (element)
   {
     case EL_EMPTY:
@@ -5960,8 +6286,16 @@ int DigField(struct PlayerInfo *player,
     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, SND_ACTION_DIGGING);
+#if 1
+      if (mode != DF_SNAP && element != EL_EMPTY)
+      {
+	GfxElement[x][y] = (CAN_BE_CRUMBLED(element) ? EL_SAND : element);
+	player->is_digging = TRUE;
+      }
+#endif
+      PlaySoundLevelElementAction(x, y, element, ACTION_DIGGING);
       break;
 
     case EL_EMERALD:
@@ -5974,6 +6308,13 @@ int DigField(struct PlayerInfo *player,
     case EL_PEARL:
     case EL_CRYSTAL:
       RemoveField(x, y);
+#if 1
+      if (mode != DF_SNAP)
+      {
+	GfxElement[x][y] = element;
+	player->is_collecting = TRUE;
+      }
+#endif
       local_player->gems_still_needed -= (element == EL_DIAMOND ? 3 :
 					  element == EL_PEARL ? 5 :
 					  element == EL_CRYSTAL ? 8 : 1);
@@ -5981,9 +6322,8 @@ int DigField(struct PlayerInfo *player,
 	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, SND_ACTION_COLLECTING);
+	       int2str(local_player->gems_still_needed, 3), FONT_TEXT_2);
+      PlaySoundLevelElementAction(x, y, element, ACTION_COLLECTING);
       break;
 
     case EL_SPEED_PILL:
@@ -6002,9 +6342,9 @@ int DigField(struct PlayerInfo *player,
       if (level.time > 0)
       {
 	TimeLeft += 10;
-	DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+	DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FONT_TEXT_2);
       }
-      PlaySoundStereo(SND_EXTRA_TIME_COLLECTING, SOUND_MAX_RIGHT);
+      PlaySoundStereo(SND_EXTRA_TIME_COLLECTING, SOUND_MIDDLE);
       break;
 
     case EL_SHIELD_NORMAL:
@@ -6024,68 +6364,70 @@ int DigField(struct PlayerInfo *player,
     case EL_SP_DISK_RED:
       RemoveField(x, y);
       player->dynamite++;
+      player->use_disk_red_graphic = (element == EL_SP_DISK_RED);
       RaiseScoreElement(EL_DYNAMITE);
-      DrawText(DX_DYNAMITE, DY_DYNAMITE,
-	       int2str(local_player->dynamite, 3),
-	       FS_SMALL, FC_YELLOW);
-      PlaySoundLevelElementAction(x, y, element, SND_ACTION_COLLECTING);
+      DrawText(DX_DYNAMITE, DY_DYNAMITE, int2str(local_player->dynamite, 3),
+	       FONT_TEXT_2);
+      PlaySoundLevelElementAction(x, y, element, ACTION_COLLECTING);
       break;
 
-    case EL_DYNABOMB_NR:
+    case EL_DYNABOMB_INCREASE_NUMBER:
       RemoveField(x, y);
       player->dynabomb_count++;
       player->dynabombs_left++;
       RaiseScoreElement(EL_DYNAMITE);
-      PlaySoundLevel(x, y, SND_DYNABOMB_NR_COLLECTING);
+      PlaySoundLevel(x, y, SND_DYNABOMB_INCREASE_NUMBER_COLLECTING);
       break;
 
-    case EL_DYNABOMB_SZ:
+    case EL_DYNABOMB_INCREASE_SIZE:
       RemoveField(x, y);
       player->dynabomb_size++;
       RaiseScoreElement(EL_DYNAMITE);
-      PlaySoundLevel(x, y, SND_DYNABOMB_SZ_COLLECTING);
+      PlaySoundLevel(x, y, SND_DYNABOMB_INCREASE_SIZE_COLLECTING);
       break;
 
-    case EL_DYNABOMB_XL:
+    case EL_DYNABOMB_INCREASE_POWER:
       RemoveField(x, y);
       player->dynabomb_xl = TRUE;
       RaiseScoreElement(EL_DYNAMITE);
-      PlaySoundLevel(x, y, SND_DYNABOMB_XL_COLLECTING);
+      PlaySoundLevel(x, y, SND_DYNABOMB_INCREASE_POWER_COLLECTING);
       break;
 
-    case EL_KEY1:
-    case EL_KEY2:
-    case EL_KEY3:
-    case EL_KEY4:
+    case EL_KEY_1:
+    case EL_KEY_2:
+    case EL_KEY_3:
+    case EL_KEY_4:
     {
-      int key_nr = element - EL_KEY1;
+      int key_nr = element - EL_KEY_1;
+      int graphic = el2edimg(element);
 
       RemoveField(x, y);
       player->key[key_nr] = TRUE;
       RaiseScoreElement(element);
       DrawMiniGraphicExt(drawto, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
-			 GFX_SCHLUESSEL1 + key_nr);
+			 graphic);
       DrawMiniGraphicExt(window, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
-			 GFX_SCHLUESSEL1 + key_nr);
-      PlaySoundLevel(x, y, SND_KEY_COLLECTING);
+			 graphic);
+      PlaySoundLevel(x, y, SND_CLASS_KEY_COLLECTING);
       break;
     }
 
-    case EL_EM_KEY1:
-    case EL_EM_KEY2:
-    case EL_EM_KEY3:
-    case EL_EM_KEY4:
+    case EL_EM_KEY_1:
+    case EL_EM_KEY_2:
+    case EL_EM_KEY_3:
+    case EL_EM_KEY_4:
     {
-      int key_nr = element - EL_EM_KEY1;
+      int key_nr = element - EL_EM_KEY_1;
+      int graphic = el2edimg(EL_KEY_1 + key_nr);
 
       RemoveField(x, y);
       player->key[key_nr] = TRUE;
       RaiseScoreElement(element);
       DrawMiniGraphicExt(drawto, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
-			 GFX_SCHLUESSEL1 + key_nr);
+			 graphic);
       DrawMiniGraphicExt(window, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
-			 GFX_SCHLUESSEL1 + key_nr);
-      PlaySoundLevel(x, y, SND_KEY_COLLECTING);
+			 graphic);
+      PlaySoundLevel(x, y, SND_CLASS_KEY_COLLECTING);
       break;
     }
 
@@ -6119,23 +6461,23 @@ int DigField(struct PlayerInfo *player,
       }
       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:
+    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 (!player->Switching)
       {
 	player->Switching = TRUE;
 	ToggleBeltSwitch(x, y);
-	PlaySoundLevel(x, y, SND_CONVEYOR_BELT_SWITCH_ACTIVATING);
+	PlaySoundLevel(x, y, SND_CLASS_CONVEYOR_BELT_SWITCH_ACTIVATING);
       }
       return MF_ACTION;
       break;
@@ -6146,7 +6488,7 @@ int DigField(struct PlayerInfo *player,
       {
 	player->Switching = TRUE;
 	ToggleSwitchgateSwitch(x, y);
-	PlaySoundLevel(x, y, SND_SWITCHGATE_SWITCH_ACTIVATING);
+	PlaySoundLevel(x, y, SND_CLASS_SWITCHGATE_SWITCH_ACTIVATING);
       }
       return MF_ACTION;
       break;
@@ -6171,20 +6513,20 @@ int DigField(struct PlayerInfo *player,
       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)
+    case EL_BALLOON_SWITCH_LEFT:
+    case EL_BALLOON_SWITCH_RIGHT:
+    case EL_BALLOON_SWITCH_UP:
+    case EL_BALLOON_SWITCH_DOWN:
+    case EL_BALLOON_SWITCH_ANY:
+      if (element == EL_BALLOON_SWITCH_ANY)
 	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 :
+	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);
-      PlaySoundLevel(x, y, SND_BALLOON_SWITCH_ACTIVATING);
+      PlaySoundLevel(x, y, SND_CLASS_BALLOON_SWITCH_ACTIVATING);
 
       return MF_ACTION;
       break;
@@ -6200,7 +6542,9 @@ int DigField(struct PlayerInfo *player,
     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)
@@ -6208,20 +6552,24 @@ int DigField(struct PlayerInfo *player,
 
       player->Pushing = TRUE;
 
+#if 0
+      if (element == EL_ROCK)
+	printf("::: wanna push [%d] [%d]\n",
+	       FrameCounter, player->push_delay_value);
+#endif
+
       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 (!checkDiagonalPushing(player, x, y, real_dx, 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)
+	  !tape.playing &&
+	  element != EL_SPRING)
 	return MF_NO_ACTION;
 #else
       if (!FrameReached(&player->push_delay, player->push_delay_value) &&
@@ -6250,30 +6598,30 @@ int DigField(struct PlayerInfo *player,
       player->push_delay_value = (element == EL_SPRING ? 0 : 2 + RND(8));
 
       DrawLevelField(x + dx, y + dy);
-      PlaySoundLevelElementAction(x, y, element, SND_ACTION_PUSHING);
+      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])
+    case EL_GATE_1:
+    case EL_GATE_2:
+    case EL_GATE_3:
+    case EL_GATE_4:
+      if (!player->key[element - EL_GATE_1])
 	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])
+    case EL_GATE_1_GRAY:
+    case EL_GATE_2_GRAY:
+    case EL_GATE_3_GRAY:
+    case EL_GATE_4_GRAY:
+      if (!player->key[element - EL_GATE_1_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])
+    case EL_EM_GATE_1:
+    case EL_EM_GATE_2:
+    case EL_EM_GATE_3:
+    case EL_EM_GATE_4:
+      if (!player->key[element - EL_EM_GATE_1])
 	return MF_NO_ACTION;
       if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
 	return MF_NO_ACTION;
@@ -6282,14 +6630,14 @@ int DigField(struct PlayerInfo *player,
       player->programmed_action = move_direction;
       DOUBLE_PLAYER_SPEED(player);
 
-      PlaySoundLevel(x, y, SND_GATE_PASSING);
+      PlaySoundLevel(x, y, SND_CLASS_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])
+    case EL_EM_GATE_1_GRAY:
+    case EL_EM_GATE_2_GRAY:
+    case EL_EM_GATE_3_GRAY:
+    case EL_EM_GATE_4_GRAY:
+      if (!player->key[element - EL_EM_GATE_1_GRAY])
 	return MF_NO_ACTION;
       if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
 	return MF_NO_ACTION;
@@ -6298,7 +6646,11 @@ int DigField(struct PlayerInfo *player,
       player->programmed_action = move_direction;
       DOUBLE_PLAYER_SPEED(player);
 
+#if 1
+      PlaySoundLevelAction(x, y, ACTION_PASSING);
+#else
       PlaySoundLevel(x, y, SND_GATE_PASSING);
+#endif
       break;
 
     case EL_SWITCHGATE_OPEN:
@@ -6310,40 +6662,40 @@ int DigField(struct PlayerInfo *player,
       player->programmed_action = move_direction;
       DOUBLE_PLAYER_SPEED(player);
 
-      PlaySoundLevelElementAction(x, y, element, SND_ACTION_PASSING);
+      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) ||
+	   element != EL_SP_PORT_DOWN &&
+	   element != EL_SP_GRAVITY_PORT_DOWN &&
+	   element != EL_SP_PORT_VERTICAL &&
+	   element != EL_SP_PORT_ANY) ||
 	  !IN_LEV_FIELD(x + dx, y + dy) ||
 	  !IS_FREE(x + dx, y + dy))
 	return MF_NO_ACTION;
@@ -6352,10 +6704,10 @@ int DigField(struct PlayerInfo *player,
       player->programmed_action = move_direction;
       DOUBLE_PLAYER_SPEED(player);
 
-      PlaySoundLevel(x, y, SND_SP_PORT_PASSING);
+      PlaySoundLevel(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:
@@ -6370,7 +6722,7 @@ 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 },
@@ -6394,7 +6746,7 @@ int DigField(struct PlayerInfo *player,
 	if (!(tube_enter_directions[i][1] & move_direction))
 	  return MF_NO_ACTION;	/* tube has no opening in this direction */
 
-	PlaySoundLevel(x, y, SND_TUBE_PASSING);
+	PlaySoundLevel(x, y, SND_CLASS_TUBE_PASSING);
       }
       break;
 
@@ -6410,9 +6762,9 @@ int DigField(struct PlayerInfo *player,
 	return MF_NO_ACTION;
 
       if (element == EL_EXIT_OPEN)
-	PlaySoundLevel(x, y, SND_EXIT_PASSING);
+	PlaySoundLevel(x, y, SND_CLASS_EXIT_PASSING);
       else
-	PlaySoundLevel(x, y, SND_SP_EXIT_PASSING);
+	PlaySoundLevel(x, y, SND_CLASS_SP_EXIT_PASSING);
 
       break;
 
@@ -6427,9 +6779,9 @@ int DigField(struct PlayerInfo *player,
     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);
+      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FONT_TEXT_2);
       DrawLevelField(x, y);
-      PlaySoundStereo(SND_TIME_ORB_FULL_COLLECTING, SOUND_MAX_RIGHT);
+      PlaySoundStereo(SND_TIME_ORB_FULL_COLLECTING, SOUND_MIDDLE);
       return MF_ACTION;
       break;
 
@@ -6452,16 +6804,8 @@ int DigField(struct PlayerInfo *player,
 		  || !IS_SB_ELEMENT(element))))
 	return MF_NO_ACTION;
 
-      if (dx && real_dy)
-      {
-	if (IN_LEV_FIELD(jx, jy+real_dy) && !IS_SOLID(Feld[jx][jy+real_dy]))
-	  return MF_NO_ACTION;
-      }
-      else if (dy && real_dx)
-      {
-	if (IN_LEV_FIELD(jx+real_dx, jy) && !IS_SOLID(Feld[jx+real_dx][jy]))
-	  return MF_NO_ACTION;
-      }
+      if (!checkDiagonalPushing(player, x, y, real_dx, real_dy))
+	return MF_NO_ACTION;
 
       if (player->push_delay == 0)
 	player->push_delay = FrameCounter;
@@ -6491,24 +6835,40 @@ int DigField(struct PlayerInfo *player,
 	  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);
+#if 1
+	    PlaySoundLevelAction(x+dx, y+dy, ACTION_FILLING);
+#else
+	    PlaySoundLevel(x, y, SND_CLASS_SOKOBAN_FIELD_FILLING);
+#endif
 	  else
+#if 1
+	    PlaySoundLevelAction(x+dx, y+dy, ACTION_PUSHING);
+#else
 	    PlaySoundLevel(x, y, SND_SOKOBAN_OBJECT_PUSHING);
+#endif
 	}
 	else
 	{
 	  Feld[x+dx][y+dy] = EL_SOKOBAN_OBJECT;
 	  if (element == EL_SOKOBAN_FIELD_FULL)
+#if 1
+	    PlaySoundLevelAction(x+dx, y+dy, ACTION_EMPTYING);
+#else
 	    PlaySoundLevel(x, y, SND_SOKOBAN_FIELD_EMPTYING);
+#endif
 	  else
+#if 1
+	    PlaySoundLevelAction(x+dx, y+dy, ACTION_PUSHING);
+#else
 	    PlaySoundLevel(x, y, SND_SOKOBAN_OBJECT_PUSHING);
+#endif
 	}
       }
       else
       {
 	RemoveField(x, y);
 	Feld[x+dx][y+dy] = element;
-	PlaySoundLevelElementAction(x, y, element, SND_ACTION_PUSHING);
+	PlaySoundLevelElementAction(x, y, element, ACTION_PUSHING);
       }
 
       player->push_delay_value = (element == EL_BALLOON ? 0 : 2);
@@ -6521,7 +6881,7 @@ int DigField(struct PlayerInfo *player,
 	  game.emulation == EMU_SOKOBAN)
       {
 	player->LevelSolved = player->GameOver = TRUE;
-	PlaySoundLevel(x, y, SND_SOKOBAN_GAME_SOLVING);
+	PlaySoundLevel(x, y, SND_GAME_SOKOBAN_SOLVING);
       }
 
       break;
@@ -6532,11 +6892,91 @@ int DigField(struct PlayerInfo *player,
       break;
 
     default:
+
+      if (IS_WALKABLE(element))
+      {
+	break;
+      }
+      else if (IS_DIGGABLE(element))
+      {
+	RemoveField(x, y);
+#if 1
+	if (mode != DF_SNAP)
+	{
+	  GfxElement[x][y] =
+	    (CAN_BE_CRUMBLED(element) ? EL_SAND : GFX_ELEMENT(element));
+	  player->is_digging = TRUE;
+	}
+#endif
+	PlaySoundLevelElementAction(x, y, element, ACTION_DIGGING);
+
+	break;
+      }
+      else if (IS_COLLECTIBLE(element))
+      {
+	RemoveField(x, y);
+#if 1
+	if (mode != DF_SNAP)
+	{
+	  GfxElement[x][y] = element;
+	  player->is_collecting = TRUE;
+	}
+#endif
+	PlaySoundLevelElementAction(x, y, element, ACTION_COLLECTING);
+
+	break;
+      }
+      else if (IS_PUSHABLE(element))
+      {
+	if (mode == DF_SNAP)
+	  return MF_NO_ACTION;
+
+	if (CAN_FALL(element) && dy)
+	  return MF_NO_ACTION;
+
+	if (!player->Pushing &&
+	    game.engine_version >= RELEASE_IDENT(2,2,0,7))
+	  player->push_delay_value = GET_NEW_PUSH_DELAY(element);
+
+	player->Pushing = TRUE;
+
+	if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
+	  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))
+	  return MF_NO_ACTION;
+
+	RemoveField(x, y);
+	Feld[x + dx][y + dy] = element;
+
+#if 1
+	if (game.engine_version < RELEASE_IDENT(2,2,0,7))
+	  player->push_delay_value = GET_NEW_PUSH_DELAY(element);
+#else
+	player->push_delay_value = 2 + RND(8);
+#endif
+
+	DrawLevelField(x + dx, y + dy);
+	PlaySoundLevelElementAction(x, y, element, ACTION_PUSHING);
+
+	break;
+      }
+
       return MF_NO_ACTION;
   }
 
   player->push_delay = 0;
 
+  if (Feld[x][y] != element)		/* really digged/collected something */
+    player->is_collecting = !player->is_digging;
+
   return MF_MOVING;
 }
 
@@ -6545,6 +6985,9 @@ boolean SnapField(struct PlayerInfo *player, int dx, int dy)
   int jx = player->jx, jy = player->jy;
   int x = jx + dx, y = jy + dy;
 
+  if (player->MovPos && game.engine_version >= VERSION_IDENT(2,2,0))
+    return FALSE;
+
   if (!player->active || !IN_LEV_FIELD(x, y))
     return FALSE;
 
@@ -6557,6 +7000,13 @@ boolean SnapField(struct PlayerInfo *player, int dx, int dy)
       player->Pushing = FALSE;
 
     player->snapped = FALSE;
+
+    if (player->MovPos == 0)
+    {
+      player->is_digging = FALSE;
+      player->is_collecting = FALSE;
+    }
+
     return FALSE;
   }
 
@@ -6568,10 +7018,13 @@ boolean SnapField(struct PlayerInfo *player, int dx, int dy)
 		    dy < 0 ? MV_UP :
 		    dy > 0 ? MV_DOWN :	MV_NO_MOVING);
 
-  if (!DigField(player, x, y, 0, 0, DF_SNAP))
+  if (DigField(player, x, y, 0, 0, DF_SNAP) == MF_NO_ACTION)
     return FALSE;
 
   player->snapped = TRUE;
+  player->is_digging = FALSE;
+  player->is_collecting = FALSE;
+
   DrawLevelField(x, y);
   BackToFront();
 
@@ -6592,45 +7045,85 @@ boolean PlaceBomb(struct PlayerInfo *player)
       IS_ACTIVE_BOMB(element) || element == EL_EXPLOSION)
     return FALSE;
 
+#if 0
+  if (element != EL_EMPTY)
+    return FALSE;
+#endif
+
   if (element != EL_EMPTY)
+  {
+#if 0
     Store[jx][jy] = element;
+#else
+    Back[jx][jy] = element;
+#endif
+  }
+
+  MovDelay[jx][jy] = 96;
+
+  ResetGfxAnimation(jx, jy);
+  ResetRandomAnimationValue(jx, jy);
 
   if (player->dynamite)
   {
-    Feld[jx][jy] = EL_DYNAMITE_ACTIVE;
-    MovDelay[jx][jy] = 96;
+    Feld[jx][jy] = (player->use_disk_red_graphic ? EL_SP_DISK_RED_ACTIVE :
+		    EL_DYNAMITE_ACTIVE);
     player->dynamite--;
+
     DrawText(DX_DYNAMITE, DY_DYNAMITE, int2str(local_player->dynamite, 3),
-	     FS_SMALL, FC_YELLOW);
+	     FONT_TEXT_2);
     if (IN_SCR_FIELD(SCREENX(jx), SCREENY(jy)))
     {
+#if 1
+      DrawGraphicThruMask(SCREENX(jx), SCREENY(jy), el2img(Feld[jx][jy]), 0);
+#else
       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);
+#endif
     }
 
-    PlaySoundLevel(jx, jy, SND_DYNAMITE_DROPPING);
+    PlaySoundLevelAction(jx, jy, ACTION_DROPPING);
   }
   else
   {
     Feld[jx][jy] =
-      EL_DYNABOMB_PLAYER1_ACTIVE + (player->element_nr - EL_PLAYER1);
-    MovDelay[jx][jy] = 96;
+      EL_DYNABOMB_PLAYER_1_ACTIVE + (player->element_nr - EL_PLAYER_1);
     player->dynabombs_left--;
+
     if (IN_SCR_FIELD(SCREENX(jx), SCREENY(jy)))
       DrawGraphicThruMask(SCREENX(jx), SCREENY(jy), el2img(Feld[jx][jy]), 0);
 
-    PlaySoundLevel(jx, jy, SND_DYNABOMB_DROPPING);
+    PlaySoundLevelAction(jx, jy, ACTION_DROPPING);
   }
 
   return TRUE;
 }
 
-void PlaySoundLevel(int x, int y, int nr)
+/* ------------------------------------------------------------------------- */
+/* game sound playing functions                                              */
+/* ------------------------------------------------------------------------- */
+
+static int *loop_sound_frame = NULL;
+static int *loop_sound_volume = NULL;
+
+void InitPlaySoundLevel()
+{
+  int num_sounds = getSoundListSize();
+
+  if (loop_sound_frame != NULL)
+    free(loop_sound_frame);
+
+  if (loop_sound_volume != NULL)
+    free(loop_sound_volume);
+
+  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 int loop_sound_frame[NUM_SOUND_FILES];
-  static int loop_sound_volume[NUM_SOUND_FILES];
   int sx = SCREENX(x), sy = SCREENY(y);
   int volume, stereo_position;
   int max_distance = 8;
@@ -6674,24 +7167,48 @@ void PlaySoundLevel(int x, int y, int nr)
   PlaySoundExt(nr, volume, stereo_position, type);
 }
 
-void PlaySoundLevelAction(int x, int y, int sound_action)
+static void PlaySoundLevelNearest(int x, int y, int sound_action)
 {
-  PlaySoundLevelElementAction(x, y, Feld[x][y], sound_action);
+  PlaySoundLevel(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 action)
+{
+  PlaySoundLevelElementAction(x, y, Feld[x][y], action);
+}
+
+static void PlaySoundLevelElementAction(int x, int y, int element, int action)
+{
+  int sound_effect = element_info[element].sound[action];
+
+  if (sound_effect != SND_UNDEFINED)
+    PlaySoundLevel(x, y, sound_effect);
 }
 
-void PlaySoundLevelElementAction(int x, int y, int element, int sound_action)
+static void PlaySoundLevelActionIfLoop(int x, int y, int action)
 {
-  int sound_effect = element_action_sound[element][sound_action];
+  int sound_effect = element_info[Feld[x][y]].sound[action];
 
-  if (sound_effect != -1)
+  if (sound_effect != SND_UNDEFINED && IS_LOOP_SOUND(sound_effect))
     PlaySoundLevel(x, y, sound_effect);
 }
 
+static void StopSoundLevelActionIfLoop(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))
+    StopSoundExt(sound_effect, SND_CTRL_STOP_SOUND);
+}
+
 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)
@@ -6703,22 +7220,31 @@ 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]);
@@ -6727,16 +7253,26 @@ 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_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:
       break;
@@ -6757,7 +7293,7 @@ void RequestQuitGame(boolean ask_if_really_quit)
     else
 #endif
     {
-      game_status = MAINMENU;
+      game_status = GAME_MODE_MAIN;
       DrawMainMenu();
     }
   }
@@ -6830,7 +7366,7 @@ void CreateGameButtons()
 
   for (i=0; i<NUM_GAME_BUTTONS; i++)
   {
-    Bitmap *gd_bitmap = pix[PIX_DOOR];
+    Bitmap *gd_bitmap = graphic_info[IMG_GLOBAL_DOOR].bitmap;
     struct GadgetInfo *gi;
     int button_type;
     boolean checked;
@@ -6890,6 +7426,14 @@ void CreateGameButtons()
   }
 }
 
+void FreeGameButtons()
+{
+  int i;
+
+  for (i=0; i<NUM_GAME_BUTTONS; i++)
+    FreeGadget(game_gadget[i]);
+}
+
 static void MapGameButtons()
 {
   int i;
@@ -6910,7 +7454,7 @@ static void HandleGameButtons(struct GadgetInfo *gi)
 {
   int id = gi->custom_id;
 
-  if (game_status != PLAYING)
+  if (game_status != GAME_MODE_PLAYING)
     return;
 
   switch (id)