X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fgame.c;h=d79e9e13bddcca4a7e933b301d5343f70d71bd72;hb=7b47ce7ba0f673f0de5130daf5726104d0b38902;hp=46bbbf21fe046ac1bdae9a8e52ec5b9b9ff95717;hpb=046d80f9a1b3fad9d4d3d3aa92dcb3689849aebf;p=rocksndiamonds.git

diff --git a/src/game.c b/src/game.c
index 46bbbf21..533119c9 100644
--- a/src/game.c
+++ b/src/game.c
@@ -1,2781 +1,7280 @@
 /***********************************************************
-*  Rocks'n'Diamonds -- McDuffin Strikes Back!              *
+* Rocks'n'Diamonds -- McDuffin Strikes Back!               *
 *----------------------------------------------------------*
-*  ©1995 Artsoft Development                               *
-*        Holger Schemel                                    *
-*        33659 Bielefeld-Senne                             *
-*        Telefon: (0521) 493245                            *
-*        eMail: aeglos@valinor.owl.de                      *
-*               aeglos@uni-paderborn.de                    *
-*               q99492@pbhrzx.uni-paderborn.de             *
+* (c) 1995-2002 Artsoft Entertainment                      *
+*               Holger Schemel                             *
+*               Detmolder Strasse 189                      *
+*               33604 Bielefeld                            *
+*               Germany                                    *
+*               e-mail: info@artsoft.org                   *
 *----------------------------------------------------------*
-*  game.c                                                  *
+* game.c                                                   *
 ***********************************************************/
 
+#include "libgame/libgame.h"
+
 #include "game.h"
-#include "misc.h"
 #include "tools.h"
 #include "screens.h"
-#include "sound.h"
 #include "init.h"
-#include "buttons.h"
 #include "files.h"
-
-void GetPlayerConfig()
+#include "tape.h"
+#include "network.h"
+
+/* this switch controls how rocks move horizontally */
+#define OLD_GAME_BEHAVIOUR	FALSE
+
+/* EXPERIMENTAL STUFF */
+#define USE_NEW_AMOEBA_CODE	FALSE
+
+/* for DigField() */
+#define DF_NO_PUSH		0
+#define DF_DIG			1
+#define DF_SNAP			2
+
+/* for MoveFigure() */
+#define MF_NO_ACTION		0
+#define MF_MOVING		1
+#define MF_ACTION		2
+
+/* for ScrollFigure() */
+#define SCROLL_INIT		0
+#define SCROLL_GO_ON		1
+
+/* for Explode() */
+#define EX_PHASE_START		0
+#define EX_NO_EXPLOSION		0
+#define EX_NORMAL		1
+#define EX_CENTER		2
+#define EX_BORDER		3
+
+/* special positions in the game control window (relative to control window) */
+#define XX_LEVEL		37
+#define YY_LEVEL		20
+#define XX_EMERALDS		29
+#define YY_EMERALDS		54
+#define XX_DYNAMITE		29
+#define YY_DYNAMITE		89
+#define XX_KEYS			18
+#define YY_KEYS			123
+#define XX_SCORE		15
+#define YY_SCORE		159
+#define XX_TIME			29
+#define YY_TIME			194
+
+/* special positions in the game control window (relative to main window) */
+#define DX_LEVEL		(DX + XX_LEVEL)
+#define DY_LEVEL		(DY + YY_LEVEL)
+#define DX_EMERALDS		(DX + XX_EMERALDS)
+#define DY_EMERALDS		(DY + YY_EMERALDS)
+#define DX_DYNAMITE		(DX + XX_DYNAMITE)
+#define DY_DYNAMITE		(DY + YY_DYNAMITE)
+#define DX_KEYS			(DX + XX_KEYS)
+#define DY_KEYS			(DY + YY_KEYS)
+#define DX_SCORE		(DX + XX_SCORE)
+#define DY_SCORE		(DY + YY_SCORE)
+#define DX_TIME			(DX + XX_TIME)
+#define DY_TIME			(DY + YY_TIME)
+
+/* values for initial player move delay (initial delay counter value) */
+#define INITIAL_MOVE_DELAY_OFF	-1
+#define INITIAL_MOVE_DELAY_ON	0
+
+/* values for player movement speed (which is in fact a delay value) */
+#define MOVE_DELAY_NORMAL_SPEED	8
+#define MOVE_DELAY_HIGH_SPEED	4
+
+#define DOUBLE_MOVE_DELAY(x)	(x = (x <= MOVE_DELAY_HIGH_SPEED ? x * 2 : x))
+#define HALVE_MOVE_DELAY(x)	(x = (x >= MOVE_DELAY_HIGH_SPEED ? x / 2 : x))
+#define DOUBLE_PLAYER_SPEED(p)	(HALVE_MOVE_DELAY((p)->move_delay_value))
+#define HALVE_PLAYER_SPEED(p)	(DOUBLE_MOVE_DELAY((p)->move_delay_value))
+
+/* game button identifiers */
+#define GAME_CTRL_ID_STOP		0
+#define GAME_CTRL_ID_PAUSE		1
+#define GAME_CTRL_ID_PLAY		2
+#define SOUND_CTRL_ID_MUSIC		3
+#define SOUND_CTRL_ID_LOOPS		4
+#define SOUND_CTRL_ID_SIMPLE		5
+
+#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);
+
+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 MapGameButtons();
+static void HandleGameButtons(struct GadgetInfo *);
+
+static struct GadgetInfo *game_gadget[NUM_GAME_BUTTONS];
+
+#define IS_ANIMATED(g)		(graphic_info[g].anim_frames > 1)
+#define IS_LOOP_SOUND(s)	(sound_info[s].loop)
+
+
+/* -------------------------------------------------------------------------
+   definition of elements that automatically change to other elements after
+   a specified time, eventually calling a function when changing
+   ------------------------------------------------------------------------- */
+
+/* forward declaration for changer functions */
+static void InitBuggyBase(int x, int y);
+static void WarnBuggyBase(int x, int y);
+
+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);
+
+static void InitTimegateWheel(int x, int y);
+static void RunTimegateWheel(int x, int y);
+
+struct ChangingElementInfo
+{
+  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);
+};
+
+static struct ChangingElementInfo changing_element_list[] =
 {
-  int old_joystick_nr = joystick_nr;
+  { EL_NUT_CRACKING,		EL_EMERALD,		 6, NULL, NULL, NULL },
+  { EL_PEARL_BREAKING,		EL_EMPTY,		 8, NULL, NULL, NULL },
+  { EL_EXIT_OPENING,		EL_EXIT_OPEN,		29, NULL, NULL, NULL },
 
-  if (sound_status==SOUND_OFF)
-    player.setup &= ~SETUP_SOUND;
-  if (!sound_loops_allowed)
-  {
-    player.setup &= ~SETUP_SOUND_LOOPS;
-    player.setup &= ~SETUP_SOUND_MUSIC;
-  }
+  { EL_SWITCHGATE_OPENING,	EL_SWITCHGATE_OPEN,	29, NULL, NULL, NULL },
+  { EL_SWITCHGATE_CLOSING,	EL_SWITCHGATE_CLOSED,	29, NULL, NULL, NULL },
 
-  sound_on = SETUP_SOUND_ON(player.setup);
-  sound_loops_on = SETUP_SOUND_LOOPS_ON(player.setup);
-  sound_music_on = SETUP_SOUND_MUSIC_ON(player.setup);
-  toons_on = SETUP_TOONS_ON(player.setup);
-  direct_draw_on = SETUP_DIRECT_DRAW_ON(player.setup);
-  fading_on = SETUP_FADING_ON(player.setup);
-  autorecord_on = SETUP_RECORD_EACH_GAME_ON(player.setup);
-  joystick_nr = SETUP_2ND_JOYSTICK_ON(player.setup);
-  quick_doors = SETUP_QUICK_DOORS_ON(player.setup);
+  { EL_TIMEGATE_OPENING,	EL_TIMEGATE_OPEN,	29, NULL, NULL, NULL },
+  { EL_TIMEGATE_CLOSING,	EL_TIMEGATE_CLOSED,	29, NULL, NULL, NULL },
 
-  if (joystick_nr != old_joystick_nr)
-  {
-    if (joystick_device)
-      close(joystick_device);
-    InitJoystick();
-  }
-}
+  { 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 },
 
-void InitGame()
-{
-  int i,x,y;
+  { EL_TRAP,			EL_TRAP_ACTIVE,		 0,
+    InitTrap, NULL, ActivateTrap },
+  { EL_TRAP_ACTIVE,		EL_TRAP,		31,
+    NULL, ChangeActiveTrap, NULL },
 
-  Dynamite = Score = 0;
-  Gems = level.edelsteine;
-  DynaBombCount = DynaBombSize = DynaBombsLeft = 0;
-  Key[0] = Key[1] = Key[2] = Key[3] = FALSE;
-  MampferNr = 0;
-  TimeLeft = level.time;
-  CheckMoving = TRUE;
-  CheckExploding = FALSE;
-  LevelSolved = GameOver = SiebAktiv = FALSE;
-  JX = JY = 0;
-  ZX = ZY = -1;
+  { EL_ROBOT_WHEEL_ACTIVE,	EL_ROBOT_WHEEL,		 0,
+    InitRobotWheel, RunRobotWheel, StopRobotWheel },
 
-  if (tape.recording)
-    TapeStartRecording();
-  else if (tape.playing)
-    TapeStartPlaying();
+  { EL_TIMEGATE_SWITCH_ACTIVE,	EL_TIMEGATE_SWITCH,	 0,
+    InitTimegateWheel, RunTimegateWheel, NULL },
 
-  DigField(0,0,DF_NO_PUSH);
-  SnapField(0,0);
+  { EL_UNDEFINED,		EL_UNDEFINED,	        -1, NULL	}
+};
 
-  for(i=0;i<MAX_NUM_AMOEBA;i++)
-    AmoebaCnt[i] = 0;
+static struct ChangingElementInfo changing_element[MAX_NUM_ELEMENTS];
 
-  for(y=0;y<lev_fieldy;y++) for(x=0;x<lev_fieldx;x++)
-  {
-    Feld[x][y] = Ur[x][y];
-    MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
-    Store[x][y] = Store2[x][y] = Frame[x][y] = AmoebaNr[x][y] = 0;
-    JustHit[x][y] = 0;
+#define IS_AUTO_CHANGING(e)  (changing_element[e].base_element != EL_UNDEFINED)
 
-    switch(Feld[x][y])
+
+
+#ifdef DEBUG
+#if 0
+static unsigned int getStateCheckSum(int counter)
+{
+  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;
+
+  for (y=0; y<lev_fieldy; y++) for(x=0; x<lev_fieldx; x++)
+  {
+    /*
+    if (counter == 3)
     {
-      case EL_SPIELFIGUR:
-      case EL_SPIELER1:
-	Feld[x][y] = EL_LEERRAUM;
-	JX = x;
-	JY = y;
-	break;
-      case EL_SPIELER2:
-	Feld[x][y] = EL_LEERRAUM;
-	break;
-      case EL_BADEWANNE:
-	if (x<lev_fieldx-1 && Feld[x+1][y]==EL_SALZSAEURE)
-	  Feld[x][y] = EL_BADEWANNE1;
-	else if (x>0 && Feld[x-1][y]==EL_SALZSAEURE)
-	  Feld[x][y] = EL_BADEWANNE2;
-	else if (y>0 && Feld[x][y-1]==EL_BADEWANNE1)
-	  Feld[x][y] = EL_BADEWANNE3;
-	else if (y>0 && Feld[x][y-1]==EL_SALZSAEURE)
-	  Feld[x][y] = EL_BADEWANNE4;
-	else if (y>0 && Feld[x][y-1]==EL_BADEWANNE2)
-	  Feld[x][y] = EL_BADEWANNE5;
-	break;
-      case EL_KAEFER_R:
-      case EL_KAEFER_O:
-      case EL_KAEFER_L:
-      case EL_KAEFER_U:
-      case EL_KAEFER:
-      case EL_FLIEGER_R:
-      case EL_FLIEGER_O:
-      case EL_FLIEGER_L:
-      case EL_FLIEGER_U:
-      case EL_FLIEGER:
-      case EL_PACMAN_R:
-      case EL_PACMAN_O:
-      case EL_PACMAN_L:
-      case EL_PACMAN_U:
-      case EL_MAMPFER:
-      case EL_MAMPFER2:
-      case EL_ZOMBIE:
-      case EL_PACMAN:
-	InitMovDir(x,y);
-	break;
-      case EL_AMOEBE_VOLL:
-	InitAmoebaNr(x,y);
-	break;
-      case EL_TROPFEN:
-	if (y==lev_fieldy-1)
-	{
-	  Feld[x][y] = EL_AMOEBING;
-	  Store[x][y] = EL_AMOEBE_NASS;
-	}
-	break;
-      default:
-	break;
+      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]);
     }
+    */
+
+    checksum += mult++ * Ur[x][y];
+    checksum += mult++ * Feld[x][y];
+
+    /*
+    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++ * ExplodePhase[x][y];
+    checksum += mult++ * AmoebaNr[x][y];
+    checksum += mult++ * JustStopped[x][y];
+    checksum += mult++ * Stop[x][y];
+    */
   }
 
-  scroll_x = scroll_y = -1;
-  if (JX>=MIDPOSX-1)
-    scroll_x =
-      (JX<=lev_fieldx-MIDPOSX ? JX-MIDPOSX : lev_fieldx-SCR_FIELDX+1);
-  if (JY>=MIDPOSY-1)
-    scroll_y =
-      (JY<=lev_fieldy-MIDPOSY ? JY-MIDPOSY : lev_fieldy-SCR_FIELDY+1);
+  if (counter == 3 && first_game)
+    first_game = FALSE;
 
-  DrawLevel();
-  DrawLevelElement(JX,JY,EL_SPIELFIGUR);
-  FadeToFront();
+  return checksum;
+}
+#endif
+#endif
+
+
+
+
+void GetPlayerConfig()
+{
+  if (!audio.sound_available)
+    setup.sound = FALSE;
 
-  XCopyArea(display,pix[PIX_DOOR],pix[PIX_DB_DOOR],gc,
-	    DOOR_GFX_PAGEX5,DOOR_GFX_PAGEY1, DXSIZE,DYSIZE,
-	    DOOR_GFX_PAGEX1,DOOR_GFX_PAGEY1);
-  DrawTextExt(pix[PIX_DB_DOOR],gc,
-	      DOOR_GFX_PAGEX1+XX_LEVEL,DOOR_GFX_PAGEY1+YY_LEVEL,
-	      int2str(level_nr,2),FS_SMALL,FC_YELLOW);
-  DrawTextExt(pix[PIX_DB_DOOR],gc,
-	      DOOR_GFX_PAGEX1+XX_EMERALDS,DOOR_GFX_PAGEY1+YY_EMERALDS,
-	      int2str(Gems,3),FS_SMALL,FC_YELLOW);
-  DrawTextExt(pix[PIX_DB_DOOR],gc,
-	      DOOR_GFX_PAGEX1+XX_DYNAMITE,DOOR_GFX_PAGEY1+YY_DYNAMITE,
-	      int2str(Dynamite,3),FS_SMALL,FC_YELLOW);
-  DrawTextExt(pix[PIX_DB_DOOR],gc,
-	      DOOR_GFX_PAGEX1+XX_SCORE,DOOR_GFX_PAGEY1+YY_SCORE,
-	      int2str(Score,5),FS_SMALL,FC_YELLOW);
-  DrawTextExt(pix[PIX_DB_DOOR],gc,
-	      DOOR_GFX_PAGEX1+XX_TIME,DOOR_GFX_PAGEY1+YY_TIME,
-	      int2str(TimeLeft,3),FS_SMALL,FC_YELLOW);
-
-  DrawGameButton(BUTTON_GAME_STOP);
-  DrawGameButton(BUTTON_GAME_PAUSE);
-  DrawGameButton(BUTTON_GAME_PLAY);
-  DrawSoundDisplay(BUTTON_SOUND_MUSIC | (BUTTON_ON * sound_music_on));
-  DrawSoundDisplay(BUTTON_SOUND_LOOPS | (BUTTON_ON * sound_loops_on));
-  DrawSoundDisplay(BUTTON_SOUND_SOUND | (BUTTON_ON * sound_on));
-  XCopyArea(display,drawto,pix[PIX_DB_DOOR],gc,
-	    DX+GAME_CONTROL_XPOS,DY+GAME_CONTROL_YPOS,
-	    GAME_CONTROL_XSIZE,2*GAME_CONTROL_YSIZE,
-	    DOOR_GFX_PAGEX1+GAME_CONTROL_XPOS,
-	    DOOR_GFX_PAGEY1+GAME_CONTROL_YPOS);
-
-  OpenDoor(DOOR_OPEN_1);
-
-  if (sound_music_on)
-    PlaySoundLoop(background_loop[level_nr % num_bg_loops]);
-
-  XAutoRepeatOff(display);
+  if (!audio.loops_available)
+    setup.sound_loops = FALSE;
+
+  if (!audio.music_available)
+    setup.sound_music = FALSE;
+
+  if (!video.fullscreen_available)
+    setup.fullscreen = FALSE;
+
+  setup.sound_simple = setup.sound;
+
+  SetAudioMode(setup.sound);
+  InitJoysticks();
 }
 
-void InitMovDir(int x, int y)
+static int getBeltNrFromBeltElement(int element)
 {
-  int i, element = Feld[x][y];
-  static int xy[4][2] =
+  return (element < EL_CONVEYOR_BELT2_LEFT ? 0 :
+	  element < EL_CONVEYOR_BELT3_LEFT ? 1 :
+	  element < EL_CONVEYOR_BELT4_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);
+}
+
+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);
+}
+
+static int getBeltDirNrFromBeltSwitchElement(int element)
+{
+  static int belt_base_element[4] =
   {
-    0,+1,
-    +1,0,
-    0,-1,
-    -1,0
+    EL_CONVEYOR_BELT1_SWITCH_LEFT,
+    EL_CONVEYOR_BELT2_SWITCH_LEFT,
+    EL_CONVEYOR_BELT3_SWITCH_LEFT,
+    EL_CONVEYOR_BELT4_SWITCH_LEFT
   };
-  static int direction[2][4] =
+
+  int belt_nr = getBeltNrFromBeltSwitchElement(element);
+  int belt_dir_nr = element - belt_base_element[belt_nr];
+
+  return (belt_dir_nr % 3);
+}
+
+static int getBeltDirFromBeltSwitchElement(int element)
+{
+  static int belt_move_dir[3] =
   {
-    MV_RIGHT, MV_UP,   MV_LEFT,  MV_DOWN,
-    MV_LEFT,  MV_DOWN, MV_RIGHT, MV_UP
+    MV_LEFT,
+    MV_NO_MOVING,
+    MV_RIGHT
   };
 
-  switch(element)
+  int belt_dir_nr = getBeltDirNrFromBeltSwitchElement(element);
+
+  return belt_move_dir[belt_dir_nr];
+}
+
+static void InitField(int x, int y, boolean init_game)
+{
+  switch (Feld[x][y])
   {
-    case EL_KAEFER_R:
-    case EL_KAEFER_O:
-    case EL_KAEFER_L:
-    case EL_KAEFER_U:
-      Feld[x][y] = EL_KAEFER;
-      MovDir[x][y] = direction[0][element-EL_KAEFER_R];
-      break;
-    case EL_FLIEGER_R:
-    case EL_FLIEGER_O:
-    case EL_FLIEGER_L:
-    case EL_FLIEGER_U:
-      Feld[x][y] = EL_FLIEGER;
-      MovDir[x][y] = direction[0][element-EL_FLIEGER_R];
-      break;
-    case EL_PACMAN_R:
-    case EL_PACMAN_O:
-    case EL_PACMAN_L:
-    case EL_PACMAN_U:
-      Feld[x][y] = EL_PACMAN;
-      MovDir[x][y] = direction[0][element-EL_PACMAN_R];
-      break;
-    default:
-      MovDir[x][y] = 1<<RND(4);
-      if (element!=EL_KAEFER && element!=EL_FLIEGER)
-	break;
+    case EL_SP_MURPHY:
+      if (init_game)
+      {
+	if (stored_player[0].present)
+	{
+	  Feld[x][y] = EL_SP_MURPHY_CLONE;
+	  break;
+	}
 
-      for(i=0;i<4;i++)
+	Feld[x][y] = EL_PLAYER1;
+      }
+      /* no break! */
+    case EL_PLAYER1:
+    case EL_PLAYER2:
+    case EL_PLAYER3:
+    case EL_PLAYER4:
+      if (init_game)
       {
-	int x1,y1;
+	struct PlayerInfo *player = &stored_player[Feld[x][y] - EL_PLAYER1];
+	int jx = player->jx, jy = player->jy;
 
-	x1 = x+xy[i][0];
-	y1 = y+xy[i][1];
+	player->present = TRUE;
 
-	if (!IN_LEV_FIELD(x1,y1) || !IS_FREE(x1,y1))
+	if (!options.network || player->connected)
 	{
-	  if (element==EL_KAEFER)
-	  {
-	    MovDir[x][y] = direction[0][i];
-	    break;
-	  }
-	  else if (element==EL_FLIEGER)
+	  player->active = TRUE;
+
+	  /* remove potentially duplicate players */
+	  if (StorePlayer[jx][jy] == Feld[x][y])
+	    StorePlayer[jx][jy] = 0;
+
+	  StorePlayer[x][y] = Feld[x][y];
+
+	  if (options.debug)
 	  {
-	    MovDir[x][y] = direction[1][i];
-	    break;
+	    printf("Player %d activated.\n", player->element_nr);
+	    printf("[Local player is %d and currently %s.]\n",
+		   local_player->element_nr,
+		   local_player->active ? "active" : "not active");
 	  }
 	}
+
+	Feld[x][y] = EL_EMPTY;
+	player->jx = player->last_jx = x;
+	player->jy = player->last_jy = y;
+      }
+      break;
+
+    case EL_STONEBLOCK:
+      if (x < lev_fieldx-1 && Feld[x+1][y] == EL_ACID)
+	Feld[x][y] = EL_ACIDPOOL_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;
+      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;
+      break;
+
+    case EL_BUG_RIGHT:
+    case EL_BUG_UP:
+    case EL_BUG_LEFT:
+    case EL_BUG_DOWN:
+    case EL_BUG:
+    case EL_SPACESHIP_RIGHT:
+    case EL_SPACESHIP_UP:
+    case EL_SPACESHIP_LEFT:
+    case EL_SPACESHIP_DOWN:
+    case EL_SPACESHIP:
+    case EL_BD_BUTTERFLY_RIGHT:
+    case EL_BD_BUTTERFLY_UP:
+    case EL_BD_BUTTERFLY_LEFT:
+    case EL_BD_BUTTERFLY_DOWN:
+    case EL_BD_BUTTERFLY:
+    case EL_BD_FIREFLY_RIGHT:
+    case EL_BD_FIREFLY_UP:
+    case EL_BD_FIREFLY_LEFT:
+    case EL_BD_FIREFLY_DOWN:
+    case EL_BD_FIREFLY:
+    case EL_PACMAN_RIGHT:
+    case EL_PACMAN_UP:
+    case EL_PACMAN_LEFT:
+    case EL_PACMAN_DOWN:
+    case EL_YAMYAM:
+    case EL_DARK_YAMYAM:
+    case EL_ROBOT:
+    case EL_PACMAN:
+    case EL_SP_SNIKSNAK:
+    case EL_SP_ELECTRON:
+    case EL_MOLE_LEFT:
+    case EL_MOLE_RIGHT:
+    case EL_MOLE_UP:
+    case EL_MOLE_DOWN:
+    case EL_MOLE:
+      InitMovDir(x, y);
+      break;
+
+    case EL_AMOEBA_FULL:
+    case EL_BD_AMOEBA:
+      InitAmoebaNr(x, y);
+      break;
+
+    case EL_AMOEBA_DROP:
+      if (y == lev_fieldy - 1)
+      {
+	Feld[x][y] = EL_AMOEBA_CREATING;
+	Store[x][y] = EL_AMOEBA_WET;
+      }
+      break;
+
+    case EL_DYNAMITE_ACTIVE:
+      MovDelay[x][y] = 96;
+      break;
+
+    case EL_LAMP:
+      local_player->lights_still_needed++;
+      break;
+
+    case EL_SOKOBAN_FIELD_EMPTY:
+      local_player->sokobanfields_still_needed++;
+      break;
+
+    case EL_PENGUIN:
+      local_player->friends_still_needed++;
+      break;
+
+    case EL_PIG:
+    case EL_DRAGON:
+      MovDir[x][y] = 1 << RND(4);
+      break;
+
+    case EL_SP_EMPTY:
+      Feld[x][y] = EL_EMPTY;
+      break;
+
+    case EL_EM_KEY1_FILE:
+      Feld[x][y] = EL_EM_KEY1;
+      break;
+    case EL_EM_KEY2_FILE:
+      Feld[x][y] = EL_EM_KEY2;
+      break;
+    case EL_EM_KEY3_FILE:
+      Feld[x][y] = EL_EM_KEY3;
+      break;
+    case EL_EM_KEY4_FILE:
+      Feld[x][y] = EL_EM_KEY4;
+      break;
+
+    case EL_CONVEYOR_BELT1_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT1_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT1_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT2_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT2_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT2_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT3_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT3_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT3_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT4_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT4_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT4_SWITCH_RIGHT:
+      if (init_game)
+      {
+	int belt_nr = getBeltNrFromBeltSwitchElement(Feld[x][y]);
+	int belt_dir = getBeltDirFromBeltSwitchElement(Feld[x][y]);
+	int belt_dir_nr = getBeltDirNrFromBeltSwitchElement(Feld[x][y]);
+
+	if (game.belt_dir_nr[belt_nr] == 3)	/* initial value */
+	{
+	  game.belt_dir[belt_nr] = belt_dir;
+	  game.belt_dir_nr[belt_nr] = belt_dir_nr;
+	}
+	else	/* more than one switch -- set it like the first switch */
+	{
+	  Feld[x][y] = Feld[x][y] - belt_dir_nr + game.belt_dir_nr[belt_nr];
+	}
       }
       break;
+
+    case EL_SWITCHGATE_SWITCH_DOWN:	/* always start with same switch pos */
+      if (init_game)
+	Feld[x][y] = EL_SWITCHGATE_SWITCH_UP;
+      break;
+
+    case EL_LIGHT_SWITCH_ACTIVE:
+      if (init_game)
+	game.light_time_left = level.time_light * FRAMES_PER_SECOND;
+      break;
+
+    default:
+      break;
   }
 }
 
-void InitAmoebaNr(int x, int y)
+void DrawGameDoorValues()
+{
+  int i, j;
+
+  for (i=0; i<MAX_PLAYERS; i++)
+    for (j=0; j<4; j++)
+      if (stored_player[i].key[j])
+	DrawMiniGraphicExt(drawto, DX_KEYS + j * MINI_TILEX, DY_KEYS,
+			   IMG_KEY1 + j);
+
+  DrawText(DX + XX_EMERALDS, DY + YY_EMERALDS,
+	   int2str(local_player->gems_still_needed, 3), FS_SMALL, FC_YELLOW);
+  DrawText(DX + XX_DYNAMITE, DY + YY_DYNAMITE,
+	   int2str(local_player->dynamite, 3), FS_SMALL, FC_YELLOW);
+  DrawText(DX + XX_SCORE, DY + YY_SCORE,
+	   int2str(local_player->score, 5), FS_SMALL, FC_YELLOW);
+  DrawText(DX + XX_TIME, DY + YY_TIME,
+	   int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+}
+
+
+/*
+  =============================================================================
+  InitGameEngine()
+  -----------------------------------------------------------------------------
+  initialize game engine due to level / tape version number
+  =============================================================================
+*/
+
+static void InitGameEngine()
 {
   int i;
-  int group_nr = AmoebeNachbarNr(x,y);
 
-  if (group_nr==0)
+  game.engine_version = (tape.playing ? tape.engine_version :
+			 level.game_version);
+
+#if 0
+    printf("level %d: level version == %06d\n", level_nr, level.game_version);
+    printf("          tape version == %06d [%s] [file: %06d]\n",
+	   tape.engine_version, (tape.playing ? "PLAYING" : "RECORDING"),
+	   tape.file_version);
+    printf("       => game.engine_version == %06d\n", game.engine_version);
+#endif
+
+  /* dynamically adjust player properties according to game engine version */
+  game.initial_move_delay =
+    (game.engine_version <= VERSION_IDENT(2,0,1) ? INITIAL_MOVE_DELAY_ON :
+     INITIAL_MOVE_DELAY_OFF);
+
+  /* dynamically adjust player properties according to level information */
+  game.initial_move_delay_value =
+    (level.double_speed ? MOVE_DELAY_HIGH_SPEED : MOVE_DELAY_NORMAL_SPEED);
+
+  /* dynamically adjust element properties according to game engine version */
   {
-    for(i=1;i<MAX_NUM_AMOEBA;i++)
+    static int ep_em_slippery_wall[] =
     {
-      if (AmoebaCnt[i]==0)
-      {
-	group_nr = i;
-	break;
-      }
+      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);
+
+    for (i=0; i<ep_em_slippery_wall_num; i++)
+    {
+      if (level.em_slippery_gems)	/* special EM style gems behaviour */
+	Properties2[ep_em_slippery_wall[i]] |=
+	  EP_BIT_EM_SLIPPERY_WALL;
+      else
+	Properties2[ep_em_slippery_wall[i]] &=
+	  ~EP_BIT_EM_SLIPPERY_WALL;
     }
+
+    /* "EL_WALL_GROWING_ACTIVE" wasn't slippery for EM gems in version 2.0.1 */
+    if (level.em_slippery_gems && game.engine_version > VERSION_IDENT(2,0,1))
+      Properties2[EL_WALL_GROWING_ACTIVE] |= EP_BIT_EM_SLIPPERY_WALL;
+    else
+      Properties2[EL_WALL_GROWING_ACTIVE] &=~EP_BIT_EM_SLIPPERY_WALL;
   }
 
-  AmoebaNr[x][y] = group_nr;
-  AmoebaCnt[group_nr]++;
+  /* initialize changing elements information */
+  for (i=0; i<MAX_NUM_ELEMENTS; i++)
+  {
+    changing_element[i].base_element = EL_UNDEFINED;
+    changing_element[i].next_element = EL_UNDEFINED;
+    changing_element[i].change_delay = -1;
+    changing_element[i].pre_change_function = NULL;
+    changing_element[i].change_function = NULL;
+    changing_element[i].post_change_function = NULL;
+  }
+
+  i = 0;
+  while (changing_element_list[i].base_element != EL_UNDEFINED)
+  {
+    struct ChangingElementInfo *ce = &changing_element_list[i];
+    int element = ce->base_element;
+
+    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++;
+  }
 }
 
-void GameWon()
+
+/*
+  =============================================================================
+  InitGame()
+  -----------------------------------------------------------------------------
+  initialize and start new game
+  =============================================================================
+*/
+
+void InitGame()
 {
-  int hi_pos;
-  int bumplevel = FALSE;
+  boolean emulate_bd = TRUE;	/* unless non-BOULDERDASH elements found */
+  boolean emulate_sb = TRUE;	/* unless non-SOKOBAN     elements found */
+  boolean emulate_sp = TRUE;	/* unless non-SUPAPLEX    elements found */
+  int i, j, x, y;
+
+  InitGameEngine();
+
+#if 0
+#if DEBUG
+#if USE_NEW_AMOEBA_CODE
+  printf("Using new amoeba code.\n");
+#else
+  printf("Using old amoeba code.\n");
+#endif
+#endif
+#endif
+
+  /* don't play tapes over network */
+  network_playing = (options.network && !tape.playing);
+
+  for (i=0; i<MAX_PLAYERS; i++)
+  {
+    struct PlayerInfo *player = &stored_player[i];
+
+    player->index_nr = i;
+    player->element_nr = EL_PLAYER1 + i;
+
+    player->present = FALSE;
+    player->active = FALSE;
+
+    player->action = 0;
+    player->effective_action = 0;
+    player->programmed_action = 0;
+
+    player->score = 0;
+    player->gems_still_needed = level.gems_needed;
+    player->sokobanfields_still_needed = 0;
+    player->lights_still_needed = 0;
+    player->friends_still_needed = 0;
+
+    for (j=0; j<4; j++)
+      player->key[j] = FALSE;
+
+    player->dynamite = 0;
+    player->dynabomb_count = 0;
+    player->dynabomb_size = 1;
+    player->dynabombs_left = 0;
+    player->dynabomb_xl = FALSE;
+
+    player->MovDir = MV_NO_MOVING;
+    player->MovPos = 0;
+    player->Pushing = FALSE;
+    player->Switching = FALSE;
+    player->GfxPos = 0;
+    player->Frame = 0;
+
+    player->actual_frame_counter = 0;
+
+    player->frame_reset_delay = 0;
+
+    player->last_move_dir = MV_NO_MOVING;
+    player->is_moving = FALSE;
+
+    player->move_delay       = game.initial_move_delay;
+    player->move_delay_value = game.initial_move_delay_value;
+
+    player->push_delay = 0;
+    player->push_delay_value = 5;
+
+    player->snapped = FALSE;
+
+    player->last_jx = player->last_jy = 0;
+    player->jx = player->jy = 0;
+
+    player->shield_normal_time_left = 0;
+    player->shield_deadly_time_left = 0;
+
+    DigField(player, 0, 0, 0, 0, DF_NO_PUSH);
+    SnapField(player, 0, 0);
+
+    player->LevelSolved = FALSE;
+    player->GameOver = FALSE;
+  }
+
+  network_player_action_received = FALSE;
+
+#if defined(PLATFORM_UNIX)
+  /* initial null action */
+  if (network_playing)
+    SendToServer_MovePlayer(MV_NO_MOVING);
+#endif
+
+  ZX = ZY = -1;
+
+  FrameCounter = 0;
+  TimeFrames = 0;
+  TimePlayed = 0;
+  TimeLeft = level.time;
+
+  ScreenMovDir = MV_NO_MOVING;
+  ScreenMovPos = 0;
+  ScreenGfxPos = 0;
+
+  ScrollStepSize = 0;	/* will be correctly initialized by ScrollScreen() */
+
+  AllPlayersGone = FALSE;
 
-  if (sound_loops_on)
-    PlaySoundExt(SND_SIRR,PSND_MAX_VOLUME,PSND_MAX_RIGHT,PSND_LOOP);
+  game.yam_content_nr = 0;
+  game.magic_wall_active = FALSE;
+  game.magic_wall_time_left = 0;
+  game.light_time_left = 0;
+  game.timegate_time_left = 0;
+  game.switchgate_pos = 0;
+  game.balloon_dir = MV_NO_MOVING;
+  game.explosions_delayed = TRUE;
 
-  if (TimeLeft>0) 
+  for (i=0; i<4; i++)
   {
-    for(;TimeLeft>=0;TimeLeft--)
+    game.belt_dir[i] = MV_NO_MOVING;
+    game.belt_dir_nr[i] = 3;		/* not moving, next moving left */
+  }
+
+  for (i=0; i<MAX_NUM_AMOEBA; i++)
+    AmoebaCnt[i] = AmoebaCnt2[i] = 0;
+
+  for (x=0; x<lev_fieldx; x++)
+  {
+    for (y=0; y<lev_fieldy; y++)
     {
-      if (!sound_loops_on)
-	PlaySoundStereo(SND_SIRR,PSND_MAX_RIGHT);
-      if (TimeLeft && !(TimeLeft % 10))
-	RaiseScore(level.score[SC_ZEITBONUS]);
-      DrawText(DX_TIME,DY_TIME,int2str(TimeLeft,3),FS_SMALL,FC_YELLOW);
-      BackToFront();
-      Delay(10000);
+      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;
+      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;
     }
   }
 
-  if (sound_loops_on)
-    StopSound(SND_SIRR);
-  FadeSounds();
+  for(y=0; y<lev_fieldy; y++)
+  {
+    for(x=0; x<lev_fieldx; x++)
+    {
+      if (emulate_bd && !IS_BD_ELEMENT(Feld[x][y]))
+	emulate_bd = FALSE;
+      if (emulate_sb && !IS_SB_ELEMENT(Feld[x][y]))
+	emulate_sb = FALSE;
+      if (emulate_sp && !IS_SP_ELEMENT(Feld[x][y]))
+	emulate_sp = FALSE;
+
+      InitField(x, y, TRUE);
+    }
+  }
 
-  if (tape.playing)
-    return;
+  InitBeltMovement();
 
-  CloseDoor(DOOR_CLOSE_1);
+  game.emulation = (emulate_bd ? EMU_BOULDERDASH :
+		    emulate_sb ? EMU_SOKOBAN :
+		    emulate_sp ? EMU_SUPAPLEX : EMU_NONE);
+
+  /* correct non-moving belts to start moving left */
+  for (i=0; i<4; i++)
+    if (game.belt_dir[i] == MV_NO_MOVING)
+      game.belt_dir_nr[i] = 3;		/* not moving, next moving left */
+
+  /* check if any connected player was not found in playfield */
+  for (i=0; i<MAX_PLAYERS; i++)
+  {
+    struct PlayerInfo *player = &stored_player[i];
+
+    if (player->connected && !player->present)
+    {
+      for (j=0; j<MAX_PLAYERS; j++)
+      {
+	struct PlayerInfo *some_player = &stored_player[j];
+	int jx = some_player->jx, jy = some_player->jy;
+
+	/* assign first free player found that is present in the playfield */
+	if (some_player->present && !some_player->connected)
+	{
+	  player->present = TRUE;
+	  player->active = TRUE;
+	  some_player->present = FALSE;
+
+	  StorePlayer[jx][jy] = player->element_nr;
+	  player->jx = player->last_jx = jx;
+	  player->jy = player->last_jy = jy;
 
-  if (level_nr==player.handicap &&
-      level_nr<leveldir[leveldir_nr].num_ready-1)
-  { 
-    player.handicap++; 
-    bumplevel = TRUE;
-    SavePlayerInfo(PLAYER_LEVEL);
+	  break;
+	}
+      }
+    }
   }
 
-  if ((hi_pos=NewHiScore())>=0) 
+  if (tape.playing)
   {
-    game_status = HALLOFFAME;
-    DrawHallOfFame(hi_pos);
-    if (bumplevel && TAPE_IS_EMPTY(tape))
-      level_nr++;
+    /* when playing a tape, eliminate all players who do not participate */
+
+    for (i=0; i<MAX_PLAYERS; i++)
+    {
+      if (stored_player[i].active && !tape.player_participates[i])
+      {
+	struct PlayerInfo *player = &stored_player[i];
+	int jx = player->jx, jy = player->jy;
+
+	player->active = FALSE;
+	StorePlayer[jx][jy] = 0;
+	Feld[jx][jy] = EL_EMPTY;
+      }
+    }
   }
-  else
+  else if (!options.network && !setup.team_mode)	/* && !tape.playing */
   {
-    game_status = MAINMENU;
-    if (bumplevel && TAPE_IS_EMPTY(tape))
-      level_nr++;
-    DrawMainMenu();
+    /* when in single player mode, eliminate all but the first active player */
+
+    for (i=0; i<MAX_PLAYERS; i++)
+    {
+      if (stored_player[i].active)
+      {
+	for (j=i+1; j<MAX_PLAYERS; j++)
+	{
+	  if (stored_player[j].active)
+	  {
+	    struct PlayerInfo *player = &stored_player[j];
+	    int jx = player->jx, jy = player->jy;
+
+	    player->active = FALSE;
+	    StorePlayer[jx][jy] = 0;
+	    Feld[jx][jy] = EL_EMPTY;
+	  }
+	}
+      }
+    }
   }
-  BackToFront();
+
+  /* when recording the game, store which players take part in the game */
+  if (tape.recording)
+  {
+    for (i=0; i<MAX_PLAYERS; i++)
+      if (stored_player[i].active)
+	tape.player_participates[i] = TRUE;
+  }
+
+  if (options.debug)
+  {
+    for (i=0; i<MAX_PLAYERS; i++)
+    {
+      struct PlayerInfo *player = &stored_player[i];
+
+      printf("Player %d: present == %d, connected == %d, active == %d.\n",
+	     i+1,
+	     player->present,
+	     player->connected,
+	     player->active);
+      if (local_player == player)
+	printf("Player 	%d is local player.\n", i+1);
+    }
+  }
+
+  if (BorderElement == EL_EMPTY)
+  {
+    SBX_Left = 0;
+    SBX_Right = lev_fieldx - SCR_FIELDX;
+    SBY_Upper = 0;
+    SBY_Lower = lev_fieldy - SCR_FIELDY;
+  }
+  else
+  {
+    SBX_Left = -1;
+    SBX_Right = lev_fieldx - SCR_FIELDX + 1;
+    SBY_Upper = -1;
+    SBY_Lower = lev_fieldy - SCR_FIELDY + 1;
+  }
+
+  if (lev_fieldx + (SBX_Left == -1 ? 2 : 0) <= SCR_FIELDX)
+    SBX_Left = SBX_Right = -1 * (SCR_FIELDX - lev_fieldx) / 2;
+
+  if (lev_fieldy + (SBY_Upper == -1 ? 2 : 0) <= SCR_FIELDY)
+    SBY_Upper = SBY_Lower = -1 * (SCR_FIELDY - lev_fieldy) / 2;
+
+  scroll_x = SBX_Left;
+  scroll_y = SBY_Upper;
+  if (local_player->jx >= SBX_Left + MIDPOSX)
+    scroll_x = (local_player->jx <= SBX_Right + MIDPOSX ?
+		local_player->jx - MIDPOSX :
+		SBX_Right);
+  if (local_player->jy >= SBY_Upper + MIDPOSY)
+    scroll_y = (local_player->jy <= SBY_Lower + MIDPOSY ?
+		local_player->jy - MIDPOSY :
+		SBY_Lower);
+
+  CloseDoor(DOOR_CLOSE_1);
+
+  DrawLevel();
+  DrawAllPlayers();
+
+  /* after drawing the level, correct some elements */
+  if (game.timegate_time_left == 0)
+    CloseAllOpenTimegates();
+
+  if (setup.soft_scrolling)
+    BlitBitmap(fieldbuffer, backbuffer, FX, FY, SXSIZE, SYSIZE, SX, SY);
+
+  redraw_mask |= REDRAW_FROM_BACKBUFFER;
+  FadeToFront();
+
+  /* copy default game door content to main double buffer */
+  BlitBitmap(graphic_info[IMG_GLOBAL_DOOR].bitmap, drawto,
+	     DOOR_GFX_PAGEX5, DOOR_GFX_PAGEY1, DXSIZE, DYSIZE, DX, DY);
+
+  if (level_nr < 100)
+    DrawText(DX + XX_LEVEL, DY + YY_LEVEL,
+	     int2str(level_nr, 2), FS_SMALL, FC_YELLOW);
+  else
+  {
+    DrawTextExt(drawto, DX + XX_EMERALDS, DY + YY_EMERALDS,
+		int2str(level_nr, 3), FS_SMALL, FC_SPECIAL3, FONT_OPAQUE);
+    BlitBitmap(drawto, drawto,
+	       DX + XX_EMERALDS, DY + YY_EMERALDS + 1,
+	       FONT5_XSIZE * 3, FONT5_YSIZE - 1,
+	       DX + XX_LEVEL - 1, DY + YY_LEVEL + 1);
+  }
+
+  DrawGameDoorValues();
+
+  UnmapGameButtons();
+  UnmapTapeButtons();
+  game_gadget[SOUND_CTRL_ID_MUSIC]->checked = setup.sound_music;
+  game_gadget[SOUND_CTRL_ID_LOOPS]->checked = setup.sound_loops;
+  game_gadget[SOUND_CTRL_ID_SIMPLE]->checked = setup.sound_simple;
+  MapGameButtons();
+  MapTapeButtons();
+
+  /* copy actual game door content to door double buffer for OpenDoor() */
+  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);
+  if (setup.sound_music)
+    PlayMusic(level_nr);
+
+  KeyboardAutoRepeatOff();
+
+  if (options.debug)
+  {
+    for (i=0; i<4; i++)
+      printf("Player %d %sactive.\n",
+	     i + 1, (stored_player[i].active ? "" : "not "));
+  }
+}
+
+void InitMovDir(int x, int y)
+{
+  int i, element = Feld[x][y];
+  static int xy[4][2] =
+  {
+    {  0, +1 },
+    { +1,  0 },
+    {  0, -1 },
+    { -1,  0 }
+  };
+  static int direction[3][4] =
+  {
+    { MV_RIGHT, MV_UP,   MV_LEFT,  MV_DOWN },
+    { MV_LEFT,  MV_DOWN, MV_RIGHT, MV_UP },
+    { MV_LEFT,  MV_RIGHT, MV_UP, MV_DOWN }
+  };
+
+  switch(element)
+  {
+    case EL_BUG_RIGHT:
+    case EL_BUG_UP:
+    case EL_BUG_LEFT:
+    case EL_BUG_DOWN:
+      Feld[x][y] = EL_BUG;
+      MovDir[x][y] = direction[0][element - EL_BUG_RIGHT];
+      break;
+
+    case EL_SPACESHIP_RIGHT:
+    case EL_SPACESHIP_UP:
+    case EL_SPACESHIP_LEFT:
+    case EL_SPACESHIP_DOWN:
+      Feld[x][y] = EL_SPACESHIP;
+      MovDir[x][y] = direction[0][element - EL_SPACESHIP_RIGHT];
+      break;
+
+    case EL_BD_BUTTERFLY_RIGHT:
+    case EL_BD_BUTTERFLY_UP:
+    case EL_BD_BUTTERFLY_LEFT:
+    case EL_BD_BUTTERFLY_DOWN:
+      Feld[x][y] = EL_BD_BUTTERFLY;
+      MovDir[x][y] = direction[0][element - EL_BD_BUTTERFLY_RIGHT];
+      break;
+
+    case EL_BD_FIREFLY_RIGHT:
+    case EL_BD_FIREFLY_UP:
+    case EL_BD_FIREFLY_LEFT:
+    case EL_BD_FIREFLY_DOWN:
+      Feld[x][y] = EL_BD_FIREFLY;
+      MovDir[x][y] = direction[0][element - EL_BD_FIREFLY_RIGHT];
+      break;
+
+    case EL_PACMAN_RIGHT:
+    case EL_PACMAN_UP:
+    case EL_PACMAN_LEFT:
+    case EL_PACMAN_DOWN:
+      Feld[x][y] = EL_PACMAN;
+      MovDir[x][y] = direction[0][element - EL_PACMAN_RIGHT];
+      break;
+
+    case EL_SP_SNIKSNAK:
+      MovDir[x][y] = MV_UP;
+      break;
+
+    case EL_SP_ELECTRON:
+      MovDir[x][y] = MV_LEFT;
+      break;
+
+    case EL_MOLE_LEFT:
+    case EL_MOLE_RIGHT:
+    case EL_MOLE_UP:
+    case EL_MOLE_DOWN:
+      Feld[x][y] = EL_MOLE;
+      MovDir[x][y] = direction[2][element - EL_MOLE_LEFT];
+      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++)
+      {
+	int x1 = x + xy[i][0];
+	int y1 = y + xy[i][1];
+
+	if (!IN_LEV_FIELD(x1, y1) || !IS_FREE(x1, y1))
+	{
+	  if (element == EL_BUG || element == EL_BD_BUTTERFLY)
+	  {
+	    MovDir[x][y] = direction[0][i];
+	    break;
+	  }
+	  else if (element == EL_SPACESHIP || element == EL_BD_FIREFLY ||
+		   element == EL_SP_SNIKSNAK || element == EL_SP_ELECTRON)
+	  {
+	    MovDir[x][y] = direction[1][i];
+	    break;
+	  }
+	}
+      }
+      break;
+  }
+}
+
+void InitAmoebaNr(int x, int y)
+{
+  int i;
+  int group_nr = AmoebeNachbarNr(x, y);
+
+  if (group_nr == 0)
+  {
+    for (i=1; i<MAX_NUM_AMOEBA; i++)
+    {
+      if (AmoebaCnt[i] == 0)
+      {
+	group_nr = i;
+	break;
+      }
+    }
+  }
+
+  AmoebaNr[x][y] = group_nr;
+  AmoebaCnt[group_nr]++;
+  AmoebaCnt2[group_nr]++;
+}
+
+void GameWon()
+{
+  int hi_pos;
+  boolean raise_level = FALSE;
+
+  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);
+
+  if (TimeLeft)
+  {
+    if (!tape.playing && setup.sound_loops)
+      PlaySoundExt(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_VOLUME, SOUND_MAX_RIGHT,
+		   SND_CTRL_PLAY_LOOP);
+
+    while (TimeLeft > 0)
+    {
+      if (!tape.playing && !setup.sound_loops)
+	PlaySoundStereo(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_RIGHT);
+      if (TimeLeft > 0 && !(TimeLeft % 10))
+	RaiseScore(level.score[SC_ZEITBONUS]);
+      if (TimeLeft > 100 && !(TimeLeft % 10))
+	TimeLeft -= 10;
+      else
+	TimeLeft--;
+      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+      BackToFront();
+
+      if (!tape.playing)
+	Delay(10);
+    }
+
+    if (!tape.playing && setup.sound_loops)
+      StopSound(SND_GAME_LEVELTIME_BONUS);
+  }
+  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,
+		   SND_CTRL_PLAY_LOOP);
+
+    while (TimePlayed < 999)
+    {
+      if (!tape.playing && !setup.sound_loops)
+	PlaySoundStereo(SND_GAME_LEVELTIME_BONUS, SOUND_MAX_RIGHT);
+      if (TimePlayed < 999 && !(TimePlayed % 10))
+	RaiseScore(level.score[SC_ZEITBONUS]);
+      if (TimePlayed < 900 && !(TimePlayed % 10))
+	TimePlayed += 10;
+      else
+	TimePlayed++;
+      DrawText(DX_TIME, DY_TIME, int2str(TimePlayed, 3), FS_SMALL, FC_YELLOW);
+      BackToFront();
+
+      if (!tape.playing)
+	Delay(10);
+    }
+
+    if (!tape.playing && setup.sound_loops)
+      StopSound(SND_GAME_LEVELTIME_BONUS);
+  }
+
+#if 0
+  FadeSounds();
+#endif
+
+  /* Hero disappears */
+  DrawLevelField(ExitX, ExitY);
+  BackToFront();
+
+  if (tape.playing)
+    return;
+
+  CloseDoor(DOOR_CLOSE_1);
+
+  if (tape.recording)
+  {
+    TapeStop();
+    SaveTape(tape.level_nr);		/* Ask to save tape */
+  }
+
+  if (level_nr == leveldir_current->handicap_level)
+  {
+    leveldir_current->handicap_level++;
+    SaveLevelSetup_SeriesInfo();
+  }
+
+  if (level_editor_test_game)
+    local_player->score = -1;	/* no highscore when playing from editor */
+  else if (level_nr < leveldir_current->last_level)
+    raise_level = TRUE;		/* advance to next level */
+
+  if ((hi_pos = NewHiScore()) >= 0) 
+  {
+    game_status = HALLOFFAME;
+    DrawHallOfFame(hi_pos);
+    if (raise_level)
+    {
+      level_nr++;
+      TapeErase();
+    }
+  }
+  else
+  {
+    game_status = MAINMENU;
+    if (raise_level)
+    {
+      level_nr++;
+      TapeErase();
+    }
+    DrawMainMenu();
+  }
+
+  BackToFront();
+}
+
+int NewHiScore()
+{
+  int k, l;
+  int position = -1;
+
+  LoadScore(level_nr);
+
+  if (strcmp(setup.player_name, EMPTY_PLAYER_NAME) == 0 ||
+      local_player->score < highscore[MAX_SCORE_ENTRIES - 1].Score) 
+    return -1;
+
+  for (k=0; k<MAX_SCORE_ENTRIES; k++) 
+  {
+    if (local_player->score > highscore[k].Score)
+    {
+      /* player has made it to the hall of fame */
+
+      if (k < MAX_SCORE_ENTRIES - 1)
+      {
+	int m = MAX_SCORE_ENTRIES - 1;
+
+#ifdef ONE_PER_NAME
+	for (l=k; l<MAX_SCORE_ENTRIES; l++)
+	  if (!strcmp(setup.player_name, highscore[l].Name))
+	    m = l;
+	if (m == k)	/* player's new highscore overwrites his old one */
+	  goto put_into_list;
+#endif
+
+	for (l=m; l>k; l--)
+	{
+	  strcpy(highscore[l].Name, highscore[l - 1].Name);
+	  highscore[l].Score = highscore[l - 1].Score;
+	}
+      }
+
+#ifdef ONE_PER_NAME
+      put_into_list:
+#endif
+      strncpy(highscore[k].Name, setup.player_name, MAX_PLAYER_NAME_LEN);
+      highscore[k].Name[MAX_PLAYER_NAME_LEN] = '\0';
+      highscore[k].Score = local_player->score; 
+      position = k;
+      break;
+    }
+
+#ifdef ONE_PER_NAME
+    else if (!strncmp(setup.player_name, highscore[k].Name,
+		      MAX_PLAYER_NAME_LEN))
+      break;	/* player already there with a higher score */
+#endif
+
+  }
+
+  if (position >= 0) 
+    SaveScore(level_nr);
+
+  return position;
+}
+
+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);
+
+  if (!JustStopped[x][y] || direction != MovDir[x][y])
+    GfxFrame[x][y] = 0;
+
+  MovDir[x][y] = direction;
+  MovDir[newx][newy] = direction;
+
+  if (Feld[newx][newy] == EL_EMPTY)
+    Feld[newx][newy] = EL_BLOCKED;
+
+  if (direction == MV_DOWN && CAN_FALL(element))
+    GfxAction[x][y] = ACTION_FALLING;
+  else
+    GfxAction[x][y] = ACTION_MOVING;
+}
+
+void Moving2Blocked(int x, int y, int *goes_to_x, int *goes_to_y)
+{
+  int direction = MovDir[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);
+
+  *goes_to_x = newx;
+  *goes_to_y = newy;
+}
+
+void Blocked2Moving(int x, int y, int *comes_from_x, int *comes_from_y)
+{
+  int oldx = x, oldy = y;
+  int direction = MovDir[x][y];
+
+  if (direction == MV_LEFT)
+    oldx++;
+  else if (direction == MV_RIGHT)
+    oldx--;
+  else if (direction == MV_UP)
+    oldy++;
+  else if (direction == MV_DOWN)
+    oldy--;
+
+  *comes_from_x = oldx;
+  *comes_from_y = oldy;
+}
+
+int MovingOrBlocked2Element(int x, int y)
+{
+  int element = Feld[x][y];
+
+  if (element == EL_BLOCKED)
+  {
+    int oldx, oldy;
+
+    Blocked2Moving(x, y, &oldx, &oldy);
+    return Feld[oldx][oldy];
+  }
+  else
+    return element;
+}
+
+static int MovingOrBlocked2ElementIfNotLeaving(int x, int y)
+{
+  /* like MovingOrBlocked2Element(), but if element is moving
+     and (x,y) is the field the moving element is just leaving,
+     return EL_BLOCKED instead of the element value */
+  int element = Feld[x][y];
+
+  if (IS_MOVING(x, y))
+  {
+    if (element == EL_BLOCKED)
+    {
+      int oldx, oldy;
+
+      Blocked2Moving(x, y, &oldx, &oldy);
+      return Feld[oldx][oldy];
+    }
+    else
+      return EL_BLOCKED;
+  }
+  else
+    return element;
+}
+
+static void RemoveField(int x, int y)
+{
+  Feld[x][y] = EL_EMPTY;
+  MovPos[x][y] = 0;
+  MovDir[x][y] = 0;
+  MovDelay[x][y] = 0;
+}
+
+void RemoveMovingField(int x, int y)
+{
+  int oldx = x, oldy = y, newx = x, newy = y;
+
+  if (Feld[x][y] != EL_BLOCKED && !IS_MOVING(x, y))
+    return;
+
+  if (IS_MOVING(x, y))
+  {
+    Moving2Blocked(x, y, &newx, &newy);
+    if (Feld[newx][newy] != EL_BLOCKED)
+      return;
+  }
+  else if (Feld[x][y] == EL_BLOCKED)
+  {
+    Blocked2Moving(x, y, &oldx, &oldy);
+    if (!IS_MOVING(oldx, oldy))
+      return;
+  }
+
+  if (Feld[x][y] == EL_BLOCKED &&
+      (Feld[oldx][oldy] == EL_QUICKSAND_EMPTYING ||
+       Feld[oldx][oldy] == EL_MAGIC_WALL_EMPTYING ||
+       Feld[oldx][oldy] == EL_BD_MAGIC_WALL_EMPTYING ||
+       Feld[oldx][oldy] == EL_AMOEBA_DRIPPING))
+    Feld[oldx][oldy] = get_next_element(Feld[oldx][oldy]);
+  else
+    Feld[oldx][oldy] = EL_EMPTY;
+
+  Store[oldx][oldy] = Store2[oldx][oldy] = 0;
+
+  Feld[newx][newy] = EL_EMPTY;
+  MovPos[oldx][oldy] = MovDir[oldx][oldy] = MovDelay[oldx][oldy] = 0;
+  MovPos[newx][newy] = MovDir[newx][newy] = MovDelay[newx][newy] = 0;
+  GfxAction[oldx][oldy] = GfxAction[newx][newy] = ACTION_DEFAULT;
+
+  DrawLevelField(oldx, oldy);
+  DrawLevelField(newx, newy);
+}
+
+void DrawDynamite(int x, int y)
+{
+  int sx = SCREENX(x), sy = SCREENY(y);
+  int graphic = el2img(Feld[x][y]);
+  int frame;
+
+  if (!IN_SCR_FIELD(sx, sy) || IS_PLAYER(x, y))
+    return;
+
+  if (Store[x][y])
+    DrawGraphic(sx, sy, el2img(Store[x][y]), 0);
+
+  frame = getGraphicAnimationFrame(graphic, GfxFrame[x][y]);
+
+  if (game.emulation == EMU_SUPAPLEX)
+    DrawGraphic(sx, sy, IMG_SP_DISK_RED, frame);
+  else if (Store[x][y])
+    DrawGraphicThruMask(sx, sy, graphic, frame);
+  else
+    DrawGraphic(sx, sy, graphic, frame);
+}
+
+void CheckDynamite(int x, int y)
+{
+  int element = Feld[x][y];
+
+  if (MovDelay[x][y] != 0)	/* dynamite is still waiting to explode */
+  {
+    MovDelay[x][y]--;
+
+    if (MovDelay[x][y] != 0)
+    {
+      if (checkDrawLevelGraphicAnimation(x, y, el2img(element)))
+	DrawDynamite(x, y);
+
+      PlaySoundLevelAction(x, y, ACTION_ACTIVE);
+
+      return;
+    }
+  }
+
+  if (Feld[x][y] == EL_DYNAMITE_ACTIVE)
+    StopSound(SND_DYNAMITE_ACTIVE);
+  else
+    StopSound(SND_DYNABOMB_ACTIVE);
+
+  Bang(x, y);
+}
+
+void Explode(int ex, int ey, int phase, int mode)
+{
+  int x, y;
+  int num_phase = 9;
+  int delay = (game.emulation == EMU_SUPAPLEX ? 3 : 2);
+  int last_phase = num_phase * delay;
+  int half_phase = (num_phase / 2) * delay;
+  int first_phase_after_start = EX_PHASE_START + 1;
+
+  if (game.explosions_delayed)
+  {
+    ExplodeField[ex][ey] = mode;
+    return;
+  }
+
+  if (phase == EX_PHASE_START)		/* initialize 'Store[][]' field */
+  {
+    int center_element = Feld[ex][ey];
+
+    if (IS_MOVING(ex, ey) || IS_BLOCKED(ex, ey))
+    {
+      /* put moving element to center field (and let it explode there) */
+      center_element = MovingOrBlocked2Element(ex, ey);
+      RemoveMovingField(ex, ey);
+      Feld[ex][ey] = center_element;
+    }
+
+    for (y=ey-1; y<=ey+1; y++) for(x=ex-1; x<=ex+1; x++)
+    {
+      int element;
+
+      if (!IN_LEV_FIELD(x, y) ||
+	  ((mode != EX_NORMAL || center_element == EL_AMOEBA_TO_DIAMOND) &&
+	   (x != ex || y != ey)))
+	continue;
+
+      element = Feld[x][y];
+
+      if (IS_MOVING(x, y) || IS_BLOCKED(x, y))
+      {
+	element = MovingOrBlocked2Element(x, y);
+	RemoveMovingField(x, y);
+      }
+
+      if (IS_MASSIVE(element) || element == EL_FLAMES)
+	continue;
+
+      if (IS_PLAYER(x, y) && SHIELD_ON(PLAYERINFO(x, y)))
+      {
+	if (IS_ACTIVE_BOMB(element))
+	{
+	  /* re-activate things under the bomb like gate or penguin */
+	  Feld[x][y] = (Store[x][y] ? Store[x][y] : EL_EMPTY);
+	  Store[x][y] = 0;
+	}
+
+	continue;
+      }
+
+      if (element == EL_EXPLOSION)
+	element = Store2[x][y];
+
+      if (IS_PLAYER(ex, ey) && !PLAYER_PROTECTED(ex, ey))
+      {
+	switch(StorePlayer[ex][ey])
+	{
+	  case EL_PLAYER2:
+	    Store[x][y] = EL_EMERALD_RED;
+	    break;
+	  case EL_PLAYER3:
+	    Store[x][y] = EL_EMERALD;
+	    break;
+	  case EL_PLAYER4:
+	    Store[x][y] = EL_EMERALD_PURPLE;
+	    break;
+	  case EL_PLAYER1:
+	  default:
+	    Store[x][y] = EL_EMERALD_YELLOW;
+	    break;
+	}
+
+	if (game.emulation == EMU_SUPAPLEX)
+	  Store[x][y] = EL_EMPTY;
+      }
+      else if (center_element == EL_MOLE)
+	Store[x][y] = EL_EMERALD_RED;
+      else if (center_element == EL_PENGUIN)
+	Store[x][y] = EL_EMERALD_PURPLE;
+      else if (center_element == EL_BUG)
+	Store[x][y] = ((x == ex && y == ey) ? EL_DIAMOND : EL_EMERALD);
+      else if (center_element == EL_BD_BUTTERFLY)
+	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 (element == EL_WALL_EMERALD)
+	Store[x][y] = EL_EMERALD;
+      else if (element == EL_WALL_DIAMOND)
+	Store[x][y] = EL_DIAMOND;
+      else if (element == EL_WALL_BD_DIAMOND)
+	Store[x][y] = EL_BD_DIAMOND;
+      else if (element == EL_WALL_EMERALD_YELLOW)
+	Store[x][y] = EL_EMERALD_YELLOW;
+      else if (element == EL_WALL_EMERALD_RED)
+	Store[x][y] = EL_EMERALD_RED;
+      else if (element == EL_WALL_EMERALD_PURPLE)
+	Store[x][y] = EL_EMERALD_PURPLE;
+      else if (element == EL_WALL_PEARL)
+	Store[x][y] = EL_PEARL;
+      else if (element == EL_WALL_CRYSTAL)
+	Store[x][y] = EL_CRYSTAL;
+      else if (!IS_PFORTE(Store[x][y]))
+	Store[x][y] = EL_EMPTY;
+
+      if (x != ex || y != ey ||
+	  center_element == EL_AMOEBA_TO_DIAMOND || mode == EX_BORDER)
+	Store2[x][y] = element;
+
+      if (AmoebaNr[x][y] &&
+	  (element == EL_AMOEBA_FULL ||
+	   element == EL_BD_AMOEBA ||
+	   element == EL_AMOEBA_CREATING))
+      {
+	AmoebaCnt[AmoebaNr[x][y]]--;
+	AmoebaCnt2[AmoebaNr[x][y]]--;
+      }
+
+      Feld[x][y] = EL_EXPLOSION;
+      MovDir[x][y] = MovPos[x][y] = 0;
+      AmoebaNr[x][y] = 0;
+      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;
+
+    return;
+  }
+
+  if (Stop[ex][ey])
+    return;
+
+  x = ex;
+  y = ey;
+
+  ExplodePhase[x][y] = (phase < last_phase ? phase + 1 : 0);
+
+  if (phase == first_phase_after_start)
+  {
+    int element = Store2[x][y];
+
+    if (element == EL_BLACK_ORB)
+    {
+      Feld[x][y] = Store2[x][y];
+      Store2[x][y] = 0;
+      Bang(x, y);
+    }
+  }
+  else if (phase == half_phase)
+  {
+    int element = Store2[x][y];
+
+    if (IS_PLAYER(x, y))
+      KillHeroUnlessProtected(x, y);
+    else if (IS_EXPLOSIVE(element))
+    {
+      Feld[x][y] = Store2[x][y];
+      Store2[x][y] = 0;
+      Bang(x, y);
+    }
+    else if (element == EL_AMOEBA_TO_DIAMOND)
+      AmoebeUmwandeln(x, y);
+  }
+
+  if (phase == last_phase)
+  {
+    int element;
+
+    element = Feld[x][y] = Store[x][y];
+    Store[x][y] = Store2[x][y] = 0;
+    MovDir[x][y] = MovPos[x][y] = MovDelay[x][y] = 0;
+    InitField(x, y, FALSE);
+    if (CAN_MOVE(element) || COULD_MOVE(element))
+      InitMovDir(x, y);
+    DrawLevelField(x, y);
+
+    if (IS_PLAYER(x, y) && !PLAYERINFO(x,y)->present)
+      StorePlayer[x][y] = 0;
+  }
+  else if (phase >= delay && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+  {
+    int stored = Store[x][y];
+    int graphic = (game.emulation != EMU_SUPAPLEX ? IMG_EXPLOSION :
+		   stored == EL_SP_INFOTRON ? IMG_SP_EXPLOSION_INFOTRON :
+		   IMG_SP_EXPLOSION);
+    int frame = getGraphicAnimationFrame(graphic, phase - delay);
+
+    if (phase == delay)
+      DrawCrumbledSand(SCREENX(x), SCREENY(y));
+
+    if (IS_PFORTE(Store[x][y]))
+    {
+      DrawLevelElement(x, y, Store[x][y]);
+      DrawGraphicThruMask(SCREENX(x), SCREENY(y), graphic, frame);
+    }
+    else
+      DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+  }
+}
+
+void DynaExplode(int ex, int ey)
+{
+  int i, j;
+  int dynabomb_size = 1;
+  boolean dynabomb_xl = FALSE;
+  struct PlayerInfo *player;
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+
+  if (IS_ACTIVE_BOMB(Feld[ex][ey]))
+  {
+    player = &stored_player[Feld[ex][ey] - EL_DYNABOMB_PLAYER1_ACTIVE];
+    dynabomb_size = player->dynabomb_size;
+    dynabomb_xl = player->dynabomb_xl;
+    player->dynabombs_left++;
+  }
+
+  Explode(ex, ey, EX_PHASE_START, EX_CENTER);
+
+  for (i=0; i<4; i++)
+  {
+    for (j=1; j<=dynabomb_size; j++)
+    {
+      int x = ex + j * xy[i % 4][0];
+      int y = ey + j * xy[i % 4][1];
+      int element;
+
+      if (!IN_LEV_FIELD(x, y) || IS_MASSIVE(Feld[x][y]))
+	break;
+
+      element = Feld[x][y];
+
+      /* do not restart explosions of fields with active bombs */
+      if (element == EL_EXPLOSION && IS_ACTIVE_BOMB(Store2[x][y]))
+	continue;
+
+      Explode(x, y, EX_PHASE_START, EX_BORDER);
+
+      if (element != EL_EMPTY &&
+	  element != EL_SAND &&
+	  element != EL_EXPLOSION &&
+	  !dynabomb_xl)
+	break;
+    }
+  }
+}
+
+void Bang(int x, int y)
+{
+  int element = Feld[x][y];
+
+  if (game.emulation == EMU_SUPAPLEX)
+    PlaySoundLevel(x, y, SND_SP_ELEMENT_EXPLODING);
+  else
+    PlaySoundLevel(x, y, SND_ELEMENT_EXPLODING);
+
+#if 0
+  if (IS_PLAYER(x, y))	/* remove objects that might cause smaller explosion */
+    element = EL_EMPTY;
+#endif
+
+  switch(element)
+  {
+    case EL_BUG:
+    case EL_SPACESHIP:
+    case EL_BD_BUTTERFLY:
+    case EL_BD_FIREFLY:
+    case EL_YAMYAM:
+    case EL_DARK_YAMYAM:
+    case EL_ROBOT:
+    case EL_PACMAN:
+    case EL_MOLE:
+      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:
+      DynaExplode(x, y);
+      break;
+    case EL_PENGUIN:
+    case EL_LAMP:
+    case EL_LAMP_ACTIVE:
+      if (IS_PLAYER(x, y))
+	Explode(x, y, EX_PHASE_START, EX_NORMAL);
+      else
+	Explode(x, y, EX_PHASE_START, EX_CENTER);
+      break;
+    default:
+      Explode(x, y, EX_PHASE_START, EX_NORMAL);
+      break;
+  }
+}
+
+void Blurb(int x, int y)
+{
+  int element = Feld[x][y];
+
+  if (element != EL_ACID_SPLASH_LEFT &&
+      element != EL_ACID_SPLASH_RIGHT)	/* start */
+  {
+    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 */
+  {
+    int graphic = (element == EL_ACID_SPLASH_LEFT ?
+		   IMG_ACID_SPLASH_LEFT :
+		   IMG_ACID_SPLASH_RIGHT);
+
+    if (!MovDelay[x][y])	/* initialize animation counter */
+      MovDelay[x][y] = 9;
+
+    if (MovDelay[x][y])		/* continue animation */
+    {
+      MovDelay[x][y]--;
+      if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+      {
+	int frame = getGraphicAnimationFrame(graphic, 8 - MovDelay[x][y]);
+
+        DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+      }
+
+      if (!MovDelay[x][y])
+      {
+	Feld[x][y] = EL_EMPTY;
+	DrawLevelField(x, y);
+      }
+    }
+  }
+}
+
+static void InitBeltMovement()
+{
+  static int belt_base_element[4] =
+  {
+    EL_CONVEYOR_BELT1_LEFT,
+    EL_CONVEYOR_BELT2_LEFT,
+    EL_CONVEYOR_BELT3_LEFT,
+    EL_CONVEYOR_BELT4_LEFT
+  };
+  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
+  };
+
+  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;
+
+    for (j=0; j<3; j++)
+    {
+      int element = belt_base_active_element[belt_nr] + j;
+      int graphic = el2img(element);
+
+      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];
+
+      for (i=0; i<4; i++)
+      {
+	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;
+	  }
+	}
+      }
+    }
+  }
+}
+
+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
+  };
+  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
+  };
+  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
+  };
+  static int belt_move_dir[4] =
+  {
+    MV_LEFT,
+    MV_NO_MOVING,
+    MV_RIGHT,
+    MV_NO_MOVING,
+  };
+
+  int element = Feld[x][y];
+  int belt_nr = getBeltNrFromBeltSwitchElement(element);
+  int belt_dir_nr = (game.belt_dir_nr[belt_nr] + 1) % 4;
+  int belt_dir = belt_move_dir[belt_dir_nr];
+  int xx, yy, i;
+
+  if (!IS_BELT_SWITCH(element))
+    return;
+
+  game.belt_dir_nr[belt_nr] = belt_dir_nr;
+  game.belt_dir[belt_nr] = belt_dir;
+
+  if (belt_dir_nr == 3)
+    belt_dir_nr = 1;
+
+  /* set frame order for belt animation graphic according to belt direction */
+  for (i=0; i<3; i++)
+  {
+    int element = belt_base_active_element[belt_nr] + i;
+    int graphic = el2img(element);
+
+    if (belt_dir == MV_LEFT)
+      graphic_info[graphic].anim_mode &= ~ANIM_REVERSE;
+    else
+      graphic_info[graphic].anim_mode |=  ANIM_REVERSE;
+  }
+
+  for (yy=0; yy<lev_fieldy; yy++)
+  {
+    for (xx=0; xx<lev_fieldx; xx++)
+    {
+      int element = Feld[xx][yy];
+
+      if (IS_BELT_SWITCH(element))
+      {
+	int e_belt_nr = getBeltNrFromBeltSwitchElement(element);
+
+	if (e_belt_nr == belt_nr)
+	{
+	  Feld[xx][yy] = belt_base_switch_element[belt_nr] + belt_dir_nr;
+	  DrawLevelField(xx, yy);
+	}
+      }
+      else if (IS_BELT(element) && belt_dir != MV_NO_MOVING)
+      {
+	int e_belt_nr = getBeltNrFromBeltElement(element);
+
+	if (e_belt_nr == belt_nr)
+	{
+	  int belt_part = Feld[xx][yy] - belt_base_element[belt_nr];
+
+	  Feld[xx][yy] = belt_base_active_element[belt_nr] + belt_part;
+	  DrawLevelField(xx, yy);
+	}
+      }
+      else if (IS_BELT_ACTIVE(element) && belt_dir == MV_NO_MOVING)
+      {
+	int e_belt_nr = getBeltNrFromBeltActiveElement(element);
+
+	if (e_belt_nr == belt_nr)
+	{
+	  int belt_part = Feld[xx][yy] - belt_base_active_element[belt_nr];
+
+	  Feld[xx][yy] = belt_base_element[belt_nr] + belt_part;
+	  DrawLevelField(xx, yy);
+	}
+      }
+    }
+  }
+}
+
+static void ToggleSwitchgateSwitch(int x, int y)
+{
+  int xx, yy;
+
+  game.switchgate_pos = !game.switchgate_pos;
+
+  for (yy=0; yy<lev_fieldy; yy++)
+  {
+    for (xx=0; xx<lev_fieldx; xx++)
+    {
+      int element = Feld[xx][yy];
+
+      if (element == EL_SWITCHGATE_SWITCH_UP ||
+	  element == EL_SWITCHGATE_SWITCH_DOWN)
+      {
+	Feld[xx][yy] = EL_SWITCHGATE_SWITCH_UP + game.switchgate_pos;
+	DrawLevelField(xx, yy);
+      }
+      else if (element == EL_SWITCHGATE_OPEN ||
+	       element == EL_SWITCHGATE_OPENING)
+      {
+	Feld[xx][yy] = EL_SWITCHGATE_CLOSING;
+	PlaySoundLevel(xx, yy, SND_SWITCHGATE_CLOSING);
+      }
+      else if (element == EL_SWITCHGATE_CLOSED ||
+	       element == EL_SWITCHGATE_CLOSING)
+      {
+	Feld[xx][yy] = EL_SWITCHGATE_OPENING;
+	PlaySoundLevel(xx, yy, SND_SWITCHGATE_OPENING);
+      }
+    }
+  }
+}
+
+static int getInvisibleActiveFromInvisibleElement(int element)
+{
+  return (element == EL_INVISIBLE_STEELWALL ? EL_INVISIBLE_STEELWALL_ACTIVE :
+	  element == EL_INVISIBLE_WALL      ? EL_INVISIBLE_WALL_ACTIVE :
+	  EL_INVISIBLE_SAND_ACTIVE);
+}
+
+static int getInvisibleFromInvisibleActiveElement(int element)
+{
+  return (element == EL_INVISIBLE_STEELWALL_ACTIVE ? EL_INVISIBLE_STEELWALL :
+	  element == EL_INVISIBLE_WALL_ACTIVE      ? EL_INVISIBLE_WALL :
+	  EL_INVISIBLE_SAND);
+}
+
+static void RedrawAllLightSwitchesAndInvisibleElements()
+{
+  int x, y;
+
+  for (y=0; y<lev_fieldy; y++)
+  {
+    for (x=0; x<lev_fieldx; x++)
+    {
+      int element = Feld[x][y];
+
+      if (element == EL_LIGHT_SWITCH &&
+	  game.light_time_left > 0)
+      {
+	Feld[x][y] = EL_LIGHT_SWITCH_ACTIVE;
+	DrawLevelField(x, y);
+      }
+      else if (element == EL_LIGHT_SWITCH_ACTIVE &&
+	       game.light_time_left == 0)
+      {
+	Feld[x][y] = EL_LIGHT_SWITCH;
+	DrawLevelField(x, y);
+      }
+      else if (element == EL_INVISIBLE_STEELWALL ||
+	       element == EL_INVISIBLE_WALL ||
+	       element == EL_INVISIBLE_SAND)
+      {
+	if (game.light_time_left > 0)
+	  Feld[x][y] = getInvisibleActiveFromInvisibleElement(element);
+
+	DrawLevelField(x, y);
+      }
+      else if (element == EL_INVISIBLE_STEELWALL_ACTIVE ||
+	       element == EL_INVISIBLE_WALL_ACTIVE ||
+	       element == EL_INVISIBLE_SAND_ACTIVE)
+      {
+	if (game.light_time_left == 0)
+	  Feld[x][y] = getInvisibleFromInvisibleActiveElement(element);
+
+	DrawLevelField(x, y);
+      }
+    }
+  }
+}
+
+static void ToggleLightSwitch(int x, int y)
+{
+  int element = Feld[x][y];
+
+  game.light_time_left =
+    (element == EL_LIGHT_SWITCH ?
+     level.time_light * FRAMES_PER_SECOND : 0);
+
+  RedrawAllLightSwitchesAndInvisibleElements();
+}
+
+static void ActivateTimegateSwitch(int x, int y)
+{
+  int xx, yy;
+
+  game.timegate_time_left = level.time_timegate * FRAMES_PER_SECOND;
+
+  for (yy=0; yy<lev_fieldy; yy++)
+  {
+    for (xx=0; xx<lev_fieldx; xx++)
+    {
+      int element = Feld[xx][yy];
+
+      if (element == EL_TIMEGATE_CLOSED ||
+	  element == EL_TIMEGATE_CLOSING)
+      {
+	Feld[xx][yy] = EL_TIMEGATE_OPENING;
+	PlaySoundLevel(xx, yy, SND_TIMEGATE_OPENING);
+      }
+
+      /*
+      else if (element == EL_TIMEGATE_SWITCH_ACTIVE)
+      {
+	Feld[xx][yy] = EL_TIMEGATE_SWITCH;
+	DrawLevelField(xx, yy);
+      }
+      */
+
+    }
+  }
+
+  Feld[x][y] = EL_TIMEGATE_SWITCH_ACTIVE;
+}
+
+void Impact(int x, int y)
+{
+  boolean lastline = (y == lev_fieldy-1);
+  boolean object_hit = FALSE;
+  int element = Feld[x][y];
+  int smashed = 0;
+
+  if (!lastline)	/* check if element below was hit */
+  {
+    if (Feld[x][y+1] == EL_PLAYER_IS_LEAVING)
+      return;
+
+    object_hit = (!IS_FREE(x, y+1) && (!IS_MOVING(x, y+1) ||
+				      MovDir[x][y+1]!=MV_DOWN ||
+				      MovPos[x][y+1]<=TILEY/2));
+    if (object_hit)
+      smashed = MovingOrBlocked2Element(x, y+1);
+  }
+
+  if (!lastline && smashed == EL_ACID)	/* element falls into acid */
+  {
+    Blurb(x, y);
+    return;
+  }
+
+  if ((element == EL_BOMB ||
+       element == EL_SP_DISK_ORANGE ||
+       element == EL_DX_SUPABOMB) &&
+      (lastline || object_hit))		/* element is bomb */
+  {
+    Bang(x, y);
+    return;
+  }
+  else if (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 (object_hit && IS_PLAYER(x, y+1))
+      KillHeroUnlessProtected(x, y+1);
+    else if (object_hit && smashed == EL_PENGUIN)
+      Bang(x, y+1);
+    else
+    {
+      Feld[x][y] = EL_AMOEBA_CREATING;
+      Store[x][y] = EL_AMOEBA_WET;
+    }
+    return;
+  }
+
+  if (!lastline && object_hit)		/* check which object was hit */
+  {
+    if (CAN_CHANGE(element) && 
+	(smashed == EL_MAGIC_WALL ||
+	 smashed == EL_BD_MAGIC_WALL))
+    {
+      int xx, yy;
+      int activated_magic_wall =
+	(smashed == EL_MAGIC_WALL ? EL_MAGIC_WALL_ACTIVE :
+	 EL_BD_MAGIC_WALL_ACTIVE);
+
+      /* activate magic wall / mill */
+      for (yy=0; yy<lev_fieldy; yy++)
+	for (xx=0; xx<lev_fieldx; xx++)
+	  if (Feld[xx][yy] == smashed)
+	    Feld[xx][yy] = activated_magic_wall;
+
+      game.magic_wall_time_left = level.time_magic_wall * FRAMES_PER_SECOND;
+      game.magic_wall_active = TRUE;
+
+      PlaySoundLevel(x, y, (smashed == EL_MAGIC_WALL ?
+			    SND_MAGIC_WALL_ACTIVATING :
+			    SND_BD_MAGIC_WALL_ACTIVATING));
+    }
+
+    if (IS_PLAYER(x, y + 1))
+    {
+      KillHeroUnlessProtected(x, y+1);
+      return;
+    }
+    else if (smashed == EL_PENGUIN)
+    {
+      Bang(x, y + 1);
+      return;
+    }
+    else if (element == EL_BD_DIAMOND)
+    {
+      if (IS_ENEMY(smashed) && IS_BD_ELEMENT(smashed))
+      {
+	Bang(x, y + 1);
+	return;
+      }
+    }
+    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);
+      return;
+    }
+    else if (element == EL_ROCK ||
+	     element == EL_SP_ZONK ||
+	     element == EL_BD_ROCK)
+    {
+      if (IS_ENEMY(smashed) ||
+	  smashed == EL_BOMB ||
+	  smashed == EL_SP_DISK_ORANGE ||
+	  smashed == EL_DX_SUPABOMB ||
+	  smashed == EL_SATELLITE ||
+	  smashed == EL_PIG ||
+	  smashed == EL_DRAGON ||
+	  smashed == EL_MOLE)
+      {
+	Bang(x, y + 1);
+	return;
+      }
+      else if (!IS_MOVING(x, y + 1))
+      {
+	if (smashed == EL_LAMP ||
+	    smashed == EL_LAMP_ACTIVE)
+	{
+	  Bang(x, y + 1);
+	  return;
+	}
+	else if (smashed == EL_NUT)
+	{
+	  Feld[x][y+1] = EL_NUT_CRACKING;
+	  PlaySoundLevel(x, y, SND_NUT_CRACKING);
+	  RaiseScoreElement(EL_NUT);
+	  return;
+	}
+	else if (smashed == EL_PEARL)
+	{
+	  Feld[x][y+1] = EL_PEARL_BREAKING;
+	  PlaySoundLevel(x, y, SND_PEARL_BREAKING);
+	  return;
+	}
+	else if (smashed == EL_DIAMOND)
+	{
+	  Feld[x][y+1] = EL_EMPTY;
+	  PlaySoundLevel(x, y, SND_DIAMOND_BREAKING);
+	  return;
+	}
+	else if (IS_BELT_SWITCH(smashed))
+	{
+	  ToggleBeltSwitch(x, y+1);
+	}
+	else if (smashed == EL_SWITCHGATE_SWITCH_UP ||
+		 smashed == EL_SWITCHGATE_SWITCH_DOWN)
+	{
+	  ToggleSwitchgateSwitch(x, y+1);
+	}
+	else if (smashed == EL_LIGHT_SWITCH ||
+		 smashed == EL_LIGHT_SWITCH_ACTIVE)
+	{
+	  ToggleLightSwitch(x, y+1);
+	}
+      }
+    }
+  }
+
+  /* play sound of magic wall / mill */
+  if (!lastline &&
+      (Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE ||
+       Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE))
+  {
+    if (Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE)
+      PlaySoundLevel(x, y, SND_MAGIC_WALL_CHANGING);
+    else if (Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE)
+      PlaySoundLevel(x, y, SND_BD_MAGIC_WALL_CHANGING);
+
+    return;
+  }
+
+  /* play sound of object that hits the ground */
+  if (lastline || object_hit)
+    PlaySoundLevelElementAction(x, y, element, ACTION_IMPACT);
+}
+
+void TurnRound(int x, int y)
+{
+  static struct
+  {
+    int x, y;
+  } move_xy[] =
+  {
+    { 0, 0 },
+    {-1, 0 },
+    {+1, 0 },
+    { 0, 0 },
+    { 0, -1 },
+    { 0, 0 }, { 0, 0 }, { 0, 0 },
+    { 0, +1 }
+  };
+  static struct
+  {
+    int left, right, back;
+  } turn[] =
+  {
+    { 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 }
+  };
+
+  int element = Feld[x][y];
+  int old_move_dir = MovDir[x][y];
+  int left_dir  = turn[old_move_dir].left;
+  int right_dir = turn[old_move_dir].right;
+  int back_dir  = turn[old_move_dir].back;
+
+  int left_dx  = move_xy[left_dir].x,     left_dy  = move_xy[left_dir].y;
+  int right_dx = move_xy[right_dir].x,    right_dy = move_xy[right_dir].y;
+  int move_dx  = move_xy[old_move_dir].x, move_dy  = move_xy[old_move_dir].y;
+  int back_dx  = move_xy[back_dir].x,     back_dy  = move_xy[back_dir].y;
+
+  int left_x  = x + left_dx,  left_y  = y + left_dy;
+  int right_x = x + right_dx, right_y = y + right_dy;
+  int move_x  = x + move_dx,  move_y  = y + move_dy;
+
+  if (element == EL_BUG || element == EL_BD_BUTTERFLY)
+  {
+    TestIfBadThingTouchesOtherBadThing(x, y);
+
+    if (IN_LEV_FIELD(right_x, right_y) &&
+	IS_FREE(right_x, right_y))
+      MovDir[x][y] = right_dir;
+    else if (!IN_LEV_FIELD(move_x, move_y) ||
+	     !IS_FREE(move_x, move_y))
+      MovDir[x][y] = left_dir;
+
+    if (element == EL_BUG && MovDir[x][y] != old_move_dir)
+      MovDelay[x][y] = 9;
+    else if (element == EL_BD_BUTTERFLY)     /* && MovDir[x][y] == left_dir) */
+      MovDelay[x][y] = 1;
+  }
+  else if (element == EL_SPACESHIP || element == EL_BD_FIREFLY ||
+	   element == EL_SP_SNIKSNAK || element == EL_SP_ELECTRON)
+  {
+    TestIfBadThingTouchesOtherBadThing(x, y);
+
+    if (IN_LEV_FIELD(left_x, left_y) &&
+	IS_FREE(left_x, left_y))
+      MovDir[x][y] = left_dir;
+    else if (!IN_LEV_FIELD(move_x, move_y) ||
+	     !IS_FREE(move_x, move_y))
+      MovDir[x][y] = right_dir;
+
+    if ((element == EL_SPACESHIP ||
+	 element == EL_SP_SNIKSNAK || element == EL_SP_ELECTRON)
+	&& MovDir[x][y] != old_move_dir)
+      MovDelay[x][y] = 9;
+    else if (element == EL_BD_FIREFLY)	    /* && MovDir[x][y] == right_dir) */
+      MovDelay[x][y] = 1;
+  }
+  else if (element == EL_YAMYAM)
+  {
+    boolean can_turn_left = FALSE, can_turn_right = FALSE;
+
+    if (IN_LEV_FIELD(left_x, left_y) &&
+	(IS_FREE_OR_PLAYER(left_x, left_y) ||
+	 Feld[left_x][left_y] == EL_DIAMOND))
+      can_turn_left = TRUE;
+    if (IN_LEV_FIELD(right_x, right_y) &&
+	(IS_FREE_OR_PLAYER(right_x, right_y) ||
+	 Feld[right_x][right_y] == EL_DIAMOND))
+      can_turn_right = TRUE;
+
+    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] = 16+16*RND(3);
+  }
+  else if (element == EL_DARK_YAMYAM)
+  {
+    boolean can_turn_left = FALSE, can_turn_right = FALSE;
+
+    if (IN_LEV_FIELD(left_x, left_y) &&
+	(IS_FREE_OR_PLAYER(left_x, left_y) ||
+	 IS_MAMPF2(Feld[left_x][left_y])))
+      can_turn_left = TRUE;
+    if (IN_LEV_FIELD(right_x, right_y) &&
+	(IS_FREE_OR_PLAYER(right_x, right_y) ||
+	 IS_MAMPF2(Feld[right_x][right_y])))
+      can_turn_right = TRUE;
+
+    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] = 16+16*RND(3);
+  }
+  else if (element == EL_PACMAN)
+  {
+    boolean can_turn_left = FALSE, can_turn_right = FALSE;
+
+    if (IN_LEV_FIELD(left_x, left_y) &&
+	(IS_FREE_OR_PLAYER(left_x, left_y) ||
+	 IS_AMOEBOID(Feld[left_x][left_y])))
+      can_turn_left = TRUE;
+    if (IN_LEV_FIELD(right_x, right_y) &&
+	(IS_FREE_OR_PLAYER(right_x, right_y) ||
+	 IS_AMOEBOID(Feld[right_x][right_y])))
+      can_turn_right = TRUE;
+
+    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] = 6+RND(40);
+  }
+  else if (element == EL_PIG)
+  {
+    boolean can_turn_left = FALSE, can_turn_right = FALSE, can_move_on = FALSE;
+    boolean should_turn_left = FALSE, should_turn_right = FALSE;
+    boolean should_move_on = FALSE;
+    int rnd_value = 24;
+    int rnd = RND(rnd_value);
+
+    if (IN_LEV_FIELD(left_x, left_y) &&
+	(IS_FREE(left_x, left_y) || IS_GEM(Feld[left_x][left_y])))
+      can_turn_left = TRUE;
+    if (IN_LEV_FIELD(right_x, right_y) &&
+	(IS_FREE(right_x, right_y) || IS_GEM(Feld[right_x][right_y])))
+      can_turn_right = TRUE;
+    if (IN_LEV_FIELD(move_x, move_y) &&
+	(IS_FREE(move_x, move_y) || IS_GEM(Feld[move_x][move_y])))
+      can_move_on = TRUE;
+
+    if (can_turn_left &&
+	(!can_move_on ||
+	 (IN_LEV_FIELD(x+back_dx+left_dx, y+back_dy+left_dy) &&
+	  !IS_FREE(x+back_dx+left_dx, y+back_dy+left_dy))))
+      should_turn_left = TRUE;
+    if (can_turn_right &&
+	(!can_move_on ||
+	 (IN_LEV_FIELD(x+back_dx+right_dx, y+back_dy+right_dy) &&
+	  !IS_FREE(x+back_dx+right_dx, y+back_dy+right_dy))))
+      should_turn_right = TRUE;
+    if (can_move_on &&
+	(!can_turn_left || !can_turn_right ||
+	 (IN_LEV_FIELD(x+move_dx+left_dx, y+move_dy+left_dy) &&
+	  !IS_FREE(x+move_dx+left_dx, y+move_dy+left_dy)) ||
+	 (IN_LEV_FIELD(x+move_dx+right_dx, y+move_dy+right_dy) &&
+	  !IS_FREE(x+move_dx+right_dx, y+move_dy+right_dy))))
+      should_move_on = TRUE;
+
+    if (should_turn_left || should_turn_right || should_move_on)
+    {
+      if (should_turn_left && should_turn_right && should_move_on)
+	MovDir[x][y] = (rnd < rnd_value/3 ? left_dir :
+			rnd < 2*rnd_value/3 ? right_dir :
+			old_move_dir);
+      else if (should_turn_left && should_turn_right)
+	MovDir[x][y] = (rnd < rnd_value/2 ? left_dir : right_dir);
+      else if (should_turn_left && should_move_on)
+	MovDir[x][y] = (rnd < rnd_value/2 ? left_dir : old_move_dir);
+      else if (should_turn_right && should_move_on)
+	MovDir[x][y] = (rnd < rnd_value/2 ? right_dir : old_move_dir);
+      else if (should_turn_left)
+	MovDir[x][y] = left_dir;
+      else if (should_turn_right)
+	MovDir[x][y] = right_dir;
+      else if (should_move_on)
+	MovDir[x][y] = old_move_dir;
+    }
+    else if (can_move_on && rnd > rnd_value/8)
+      MovDir[x][y] = old_move_dir;
+    else if (can_turn_left && can_turn_right)
+      MovDir[x][y] = (rnd < rnd_value/2 ? left_dir : right_dir);
+    else if (can_turn_left && rnd > rnd_value/8)
+      MovDir[x][y] = left_dir;
+    else if (can_turn_right && rnd > rnd_value/8)
+      MovDir[x][y] = right_dir;
+    else
+      MovDir[x][y] = back_dir;
+
+    if (!IS_FREE(x+move_xy[MovDir[x][y]].x, y+move_xy[MovDir[x][y]].y) &&
+	!IS_GEM(Feld[x+move_xy[MovDir[x][y]].x][y+move_xy[MovDir[x][y]].y]))
+      MovDir[x][y] = old_move_dir;
+
+    MovDelay[x][y] = 0;
+  }
+  else if (element == EL_DRAGON)
+  {
+    boolean can_turn_left = FALSE, can_turn_right = FALSE, can_move_on = FALSE;
+    int rnd_value = 24;
+    int rnd = RND(rnd_value);
+
+    if (IN_LEV_FIELD(left_x, left_y) && IS_FREE(left_x, left_y))
+      can_turn_left = TRUE;
+    if (IN_LEV_FIELD(right_x, right_y) && IS_FREE(right_x, right_y))
+      can_turn_right = TRUE;
+    if (IN_LEV_FIELD(move_x, move_y) && IS_FREE(move_x, move_y))
+      can_move_on = TRUE;
+
+    if (can_move_on && rnd > rnd_value/8)
+      MovDir[x][y] = old_move_dir;
+    else if (can_turn_left && can_turn_right)
+      MovDir[x][y] = (rnd < rnd_value/2 ? left_dir : right_dir);
+    else if (can_turn_left && rnd > rnd_value/8)
+      MovDir[x][y] = left_dir;
+    else if (can_turn_right && rnd > rnd_value/8)
+      MovDir[x][y] = right_dir;
+    else
+      MovDir[x][y] = back_dir;
+
+    if (!IS_FREE(x+move_xy[MovDir[x][y]].x, y+move_xy[MovDir[x][y]].y))
+      MovDir[x][y] = old_move_dir;
+
+    MovDelay[x][y] = 0;
+  }
+  else if (element == EL_MOLE)
+  {
+    boolean can_turn_left = FALSE, can_turn_right = FALSE, can_move_on = FALSE;
+
+    if (IN_LEV_FIELD(move_x, move_y) &&
+	(IS_FREE(move_x, move_y) || IS_AMOEBOID(Feld[move_x][move_y]) ||
+	 Feld[move_x][move_y] == EL_AMOEBA_SHRINKING))
+      can_move_on = TRUE;
+
+    if (!can_move_on)
+    {
+      if (IN_LEV_FIELD(left_x, left_y) &&
+	  (IS_FREE(left_x, left_y) || IS_AMOEBOID(Feld[left_x][left_y])))
+	can_turn_left = TRUE;
+      if (IN_LEV_FIELD(right_x, right_y) &&
+	  (IS_FREE(right_x, right_y) || IS_AMOEBOID(Feld[right_x][right_y])))
+	can_turn_right = TRUE;
+
+      if (can_turn_left && can_turn_right)
+	MovDir[x][y] = (RND(2) ? left_dir : right_dir);
+      else if (can_turn_left)
+	MovDir[x][y] = left_dir;
+      else
+	MovDir[x][y] = right_dir;
+    }
+
+    if (MovDir[x][y] != old_move_dir)
+      MovDelay[x][y] = 9;
+  }
+  else if (element == EL_BALLOON)
+  {
+    MovDir[x][y] = game.balloon_dir;
+    MovDelay[x][y] = 0;
+  }
+  else if (element == EL_SPRING)
+  {
+    if ((MovDir[x][y] == MV_LEFT || MovDir[x][y] == MV_RIGHT) &&
+	(!IN_LEV_FIELD(move_x, move_y) || !IS_FREE(move_x, move_y) ||
+	 (IN_LEV_FIELD(x, y + 1) && IS_FREE(x, y + 1))))
+      MovDir[x][y] = MV_NO_MOVING;
+
+    MovDelay[x][y] = 0;
+  }
+  else if (element == EL_ROBOT ||
+	   element == EL_SATELLITE ||
+	   element == EL_PENGUIN)
+  {
+    int attr_x = -1, attr_y = -1;
+
+    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;
+	}
+      }
+    }
+
+    if (element == EL_ROBOT && ZX >= 0 && ZY >= 0)
+    {
+      attr_x = ZX;
+      attr_y = ZY;
+    }
+
+    if (element == EL_PENGUIN)
+    {
+      int i;
+      static int xy[4][2] =
+      {
+	{ 0, -1 },
+	{ -1, 0 },
+	{ +1, 0 },
+	{ 0, +1 }
+      };
+
+      for (i=0; i<4; i++)
+      {
+    	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)
+	{
+	  attr_x = ex;
+ 	  attr_y = ey;
+	  break;
+	}
+      }
+    }
+
+    MovDir[x][y] = MV_NO_MOVING;
+    if (attr_x<x)
+      MovDir[x][y] |= (AllPlayersGone ? MV_RIGHT : MV_LEFT);
+    else if (attr_x>x)
+      MovDir[x][y] |= (AllPlayersGone ? MV_LEFT : MV_RIGHT);
+    if (attr_y<y)
+      MovDir[x][y] |= (AllPlayersGone ? MV_DOWN : MV_UP);
+    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));
+      Moving2Blocked(x, y, &newx, &newy);
+
+      if (IN_LEV_FIELD(newx, newy) && IS_FREE_OR_PLAYER(newx, newy))
+	MovDelay[x][y] = 8+8*!RND(3);
+      else
+	MovDelay[x][y] = 16;
+    }
+    else
+    {
+      int newx, newy;
+
+      MovDelay[x][y] = 1;
+
+      if ((MovDir[x][y]&(MV_LEFT|MV_RIGHT)) && (MovDir[x][y]&(MV_UP|MV_DOWN)))
+      {
+	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));
+	Moving2Blocked(x, y, &newx, &newy);
+
+	if (IN_LEV_FIELD(newx, newy) &&
+	    (IS_FREE(newx, newy) ||
+	     Feld[newx][newy] == EL_ACID ||
+	     (element == EL_PENGUIN &&
+	      (Feld[newx][newy] == EL_EXIT_OPEN ||
+	       IS_MAMPF3(Feld[newx][newy])))))
+	  return;
+
+	MovDir[x][y] =
+	  new_move_dir & (!first_horiz ? (MV_LEFT|MV_RIGHT) : (MV_UP|MV_DOWN));
+	Moving2Blocked(x, y, &newx, &newy);
+
+	if (IN_LEV_FIELD(newx, newy) &&
+	    (IS_FREE(newx, newy) ||
+	     Feld[newx][newy] == EL_ACID ||
+	     (element == EL_PENGUIN &&
+	      (Feld[newx][newy] == EL_EXIT_OPEN ||
+	       IS_MAMPF3(Feld[newx][newy])))))
+	  return;
+
+	MovDir[x][y] = old_move_dir;
+	return;
+      }
+    }
+  }
+}
+
+static boolean JustBeingPushed(int x, int y)
+{
+  int i;
+
+  for (i=0; i<MAX_PLAYERS; i++)
+  {
+    struct PlayerInfo *player = &stored_player[i];
+
+    if (player->active && player->Pushing && player->MovPos)
+    {
+      int next_jx = player->jx + (player->jx - player->last_jx);
+      int next_jy = player->jy + (player->jy - player->last_jy);
+
+      if (x == next_jx && y == next_jy)
+	return TRUE;
+    }
+  }
+
+  return FALSE;
+}
+
+void StartMoving(int x, int y)
+{
+  static boolean use_spring_bug = TRUE;
+  boolean started_moving = FALSE;	/* some elements can fall _and_ move */
+  int element = Feld[x][y];
+
+  if (Stop[x][y])
+    return;
+
+  GfxAction[x][y] = ACTION_DEFAULT;
+
+  if (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))
+	return;
+
+    if (element == EL_QUICKSAND_FULL)
+    {
+      if (IS_FREE(x, y+1))
+      {
+	InitMovingField(x, y, MV_DOWN);
+	started_moving = TRUE;
+
+	Feld[x][y] = EL_QUICKSAND_EMPTYING;
+	Store[x][y] = EL_ROCK;
+	PlaySoundLevel(x, y, SND_QUICKSAND_EMPTYING);
+      }
+      else if (Feld[x][y+1] == EL_QUICKSAND_EMPTY)
+      {
+	if (!MovDelay[x][y])
+	  MovDelay[x][y] = TILEY + 1;
+
+	if (MovDelay[x][y])
+	{
+	  MovDelay[x][y]--;
+	  if (MovDelay[x][y])
+	    return;
+	}
+
+	Feld[x][y] = EL_QUICKSAND_EMPTY;
+	Feld[x][y+1] = EL_QUICKSAND_FULL;
+	Store[x][y+1] = Store[x][y];
+	Store[x][y] = 0;
+	PlaySoundLevel(x, y, SND_QUICKSAND_SLIPPING);
+      }
+    }
+    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;
+      PlaySoundLevel(x, y, SND_QUICKSAND_FILLING);
+    }
+    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]);
+      }
+      else if (Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE)
+      {
+	if (!MovDelay[x][y])
+	  MovDelay[x][y] = TILEY/4 + 1;
+
+	if (MovDelay[x][y])
+	{
+	  MovDelay[x][y]--;
+	  if (MovDelay[x][y])
+	    return;
+	}
+
+	Feld[x][y] = EL_MAGIC_WALL_ACTIVE;
+	Feld[x][y+1] = EL_MAGIC_WALL_FULL;
+	Store[x][y+1] = EL_CHANGED(Store[x][y]);
+	Store[x][y] = 0;
+      }
+    }
+    else if (element == EL_BD_MAGIC_WALL_FULL)
+    {
+      if (IS_FREE(x, y+1))
+      {
+	InitMovingField(x, y, MV_DOWN);
+	started_moving = TRUE;
+
+	Feld[x][y] = EL_BD_MAGIC_WALL_EMPTYING;
+	Store[x][y] = EL_CHANGED2(Store[x][y]);
+      }
+      else if (Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE)
+      {
+	if (!MovDelay[x][y])
+	  MovDelay[x][y] = TILEY/4 + 1;
+
+	if (MovDelay[x][y])
+	{
+	  MovDelay[x][y]--;
+	  if (MovDelay[x][y])
+	    return;
+	}
+
+	Feld[x][y] = EL_BD_MAGIC_WALL_ACTIVE;
+	Feld[x][y+1] = EL_BD_MAGIC_WALL_FULL;
+	Store[x][y+1] = EL_CHANGED2(Store[x][y]);
+	Store[x][y] = 0;
+      }
+    }
+    else if (CAN_CHANGE(element) &&
+	     (Feld[x][y+1] == EL_MAGIC_WALL_ACTIVE ||
+	      Feld[x][y+1] == EL_BD_MAGIC_WALL_ACTIVE))
+    {
+      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;
+    }
+    else if (CAN_SMASH(element) && Feld[x][y+1] == EL_ACID)
+    {
+      Blurb(x, y);
+
+      InitMovingField(x, y, MV_DOWN);
+      started_moving = TRUE;
+
+      Store[x][y] = EL_ACID;
+    }
+    else if (CAN_SMASH(element) && Feld[x][y+1] == EL_BLOCKED &&
+	     JustStopped[x][y])
+    {
+      Impact(x, y);
+    }
+    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))
+    {
+      InitMovingField(x, y, MV_DOWN);
+      started_moving = TRUE;
+    }
+    else if (element == EL_AMOEBA_DROP)
+    {
+      Feld[x][y] = EL_AMOEBA_CREATING;
+      Store[x][y] = EL_AMOEBA_WET;
+    }
+    /* Store[x][y+1] must be zero, because:
+       (EL_QUICKSAND_FULL -> EL_ROCK): Store[x][y+1] == EL_QUICKSAND_EMPTY
+    */
+#if 0
+#if OLD_GAME_BEHAVIOUR
+    else if (IS_SLIPPERY(Feld[x][y+1]) && !Store[x][y+1])
+#else
+    else if (IS_SLIPPERY(Feld[x][y+1]) && !Store[x][y+1] &&
+	     !IS_FALLING(x, y+1) && !JustStopped[x][y+1] &&
+	     element != EL_DX_SUPABOMB)
+#endif
+#else
+    else if ((IS_SLIPPERY(Feld[x][y+1]) ||
+	      (IS_EM_SLIPPERY_WALL(Feld[x][y+1]) && IS_GEM(element))) &&
+	     !IS_FALLING(x, y+1) && !JustStopped[x][y+1] &&
+	     element != EL_DX_SUPABOMB && element != EL_SP_DISK_ORANGE)
+#endif
+    {
+      boolean left  = (x>0 && IS_FREE(x-1, y) &&
+		       (IS_FREE(x-1, y+1) || Feld[x-1][y+1] == EL_ACID));
+      boolean right = (x<lev_fieldx-1 && IS_FREE(x+1, y) &&
+		       (IS_FREE(x+1, y+1) || Feld[x+1][y+1] == EL_ACID));
+
+      if (left || right)
+      {
+	if (left && right &&
+	    (game.emulation != EMU_BOULDERDASH &&
+	     element != EL_BD_ROCK && element != EL_BD_DIAMOND))
+	  left = !(right = RND(2));
+
+	InitMovingField(x, y, left ? MV_LEFT : MV_RIGHT);
+	started_moving = TRUE;
+      }
+    }
+    else if (IS_BELT_ACTIVE(Feld[x][y+1]))
+    {
+      boolean left_is_free  = (x>0 && IS_FREE(x-1, y));
+      boolean right_is_free = (x<lev_fieldx-1 && IS_FREE(x+1, y));
+      int belt_nr = getBeltNrFromBeltActiveElement(Feld[x][y+1]);
+      int belt_dir = game.belt_dir[belt_nr];
+
+      if ((belt_dir == MV_LEFT  && left_is_free) ||
+	  (belt_dir == MV_RIGHT && right_is_free))
+      {
+	InitMovingField(x, y, belt_dir);
+	started_moving = TRUE;
+
+	GfxAction[x][y] = ACTION_DEFAULT;
+      }
+    }
+  }
+
+  /* not "else if" because of EL_SPRING */
+  if (CAN_MOVE(element) && !started_moving)
+  {
+    int newx, newy;
+
+    if ((element == EL_SATELLITE ||
+	 element == EL_BALLOON ||
+	 element == EL_SPRING)
+	&& 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  */
+
+      if (element != EL_YAMYAM &&
+	  element != EL_DARK_YAMYAM &&
+	  element != EL_PACMAN)
+      {
+#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 ||
+			       element == EL_SP_ELECTRON ||
+			       element == EL_MOLE))
+	  DrawLevelField(x, y);
+      }
+    }
+
+    if (MovDelay[x][y])		/* wait some time before next movement */
+    {
+      MovDelay[x][y]--;
+
+      if (element == EL_ROBOT ||
+	  element == EL_YAMYAM || element == EL_DARK_YAMYAM)
+      {
+	if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+	{
+	  int graphic = el2img(element);
+	  int frame = getGraphicAnimationFrame(graphic, MovDelay[x][y] % 8);
+
+	  DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+	}
+
+	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);
+	}
+      }
+      else if (element == EL_SP_ELECTRON)
+	DrawLevelElementAnimation(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 frame = getGraphicAnimationFrame(graphic, -1);
+
+	for (i=1; i<=3; i++)
+	{
+	  int xx = x + i*dx, yy = y + i*dy;
+	  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)
+	    break;
+
+	  if (MovDelay[x][y])
+	  {
+	    int flamed = MovingOrBlocked2Element(xx, yy);
+
+	    if (IS_ENEMY(flamed) || IS_EXPLOSIVE(flamed))
+	      Bang(xx, yy);
+	    else
+	      RemoveMovingField(xx, yy);
+
+	    Feld[xx][yy] = EL_FLAMES;
+	    if (IN_SCR_FIELD(sx, sy))
+	      DrawGraphic(sx, sy, flame_graphic, frame);
+	  }
+	  else
+	  {
+	    if (Feld[xx][yy] == EL_FLAMES)
+	      Feld[xx][yy] = EL_EMPTY;
+	    DrawLevelField(xx, yy);
+	  }
+	}
+      }
+
+      if (MovDelay[x][y])	/* element still has to wait some time */
+      {
+	PlaySoundLevelAction(x, y, ACTION_WAITING);
+
+	return;
+      }
+    }
+
+    /* now make next step */
+
+    Moving2Blocked(x, y, &newx, &newy);	/* get next screen position */
+
+    if (IS_ENEMY(element) && IS_PLAYER(newx, newy) &&
+	!PLAYER_PROTECTED(newx, newy))
+    {
+
+#if 1
+      TestIfBadThingRunsIntoHero(x, y, MovDir[x][y]);
+      return;
+#else
+      /* enemy got the player */
+      MovDir[x][y] = 0;
+      KillHero(PLAYERINFO(newx, newy));
+      return;
+#endif
+
+    }
+    else if ((element == EL_PENGUIN || element == EL_ROBOT ||
+	      element == EL_SATELLITE || element == EL_BALLOON) &&
+	     IN_LEV_FIELD(newx, newy) &&
+	     MovDir[x][y] == MV_DOWN && Feld[newx][newy] == EL_ACID)
+    {
+      Blurb(x, y);
+      Store[x][y] = EL_ACID;
+    }
+    else if (element == EL_PENGUIN && IN_LEV_FIELD(newx, newy))
+    {
+      if (Feld[newx][newy] == EL_EXIT_OPEN)
+      {
+	Feld[x][y] = EL_EMPTY;
+	DrawLevelField(x, y);
+
+	PlaySoundLevel(newx, newy, SND_PENGUIN_PASSING_EXIT);
+	if (IN_SCR_FIELD(SCREENX(newx), SCREENY(newy)))
+	  DrawGraphicThruMask(SCREENX(newx),SCREENY(newy), el2img(element), 0);
+
+	local_player->friends_still_needed--;
+	if (!local_player->friends_still_needed &&
+	    !local_player->GameOver && AllPlayersGone)
+	  local_player->LevelSolved = local_player->GameOver = TRUE;
+
+	return;
+      }
+      else if (IS_MAMPF3(Feld[newx][newy]))
+      {
+	if (DigField(local_player, newx, newy, 0, 0, DF_DIG) == MF_MOVING)
+	  DrawLevelField(newx, newy);
+	else
+	  MovDir[x][y] = MV_NO_MOVING;
+      }
+      else if (!IS_FREE(newx, newy))
+      {
+	if (IS_PLAYER(x, y))
+	  DrawPlayerField(x, y);
+	else
+	  DrawLevelField(x, y);
+	return;
+      }
+    }
+    else if (element == EL_PIG && IN_LEV_FIELD(newx, newy))
+    {
+      if (IS_GEM(Feld[newx][newy]))
+      {
+	if (IS_MOVING(newx, newy))
+	  RemoveMovingField(newx, newy);
+	else
+	{
+	  Feld[newx][newy] = EL_EMPTY;
+	  DrawLevelField(newx, newy);
+	}
+
+	PlaySoundLevel(x, y, SND_PIG_EATING);
+      }
+      else if (!IS_FREE(newx, newy))
+      {
+	if (IS_PLAYER(x, y))
+	  DrawPlayerField(x, y);
+	else
+	  DrawLevelField(x, y);
+	return;
+      }
+    }
+    else if (element == EL_DRAGON && IN_LEV_FIELD(newx, newy))
+    {
+      if (!IS_FREE(newx, newy))
+      {
+	if (IS_PLAYER(x, y))
+	  DrawPlayerField(x, y);
+	else
+	  DrawLevelField(x, y);
+	return;
+      }
+      else
+      {
+	boolean wanna_flame = !RND(10);
+	int dx = newx - x, dy = newy - y;
+	int newx1 = newx+1*dx, newy1 = newy+1*dy;
+	int newx2 = newx+2*dx, newy2 = newy+2*dy;
+	int element1 = (IN_LEV_FIELD(newx1, newy1) ?
+			MovingOrBlocked2Element(newx1, newy1) : EL_STEELWALL);
+	int element2 = (IN_LEV_FIELD(newx2, newy2) ?
+			MovingOrBlocked2Element(newx2, newy2) : EL_STEELWALL);
+
+	if ((wanna_flame || IS_ENEMY(element1) || IS_ENEMY(element2)) &&
+	    element1 != EL_DRAGON && element2 != EL_DRAGON &&
+	    element1 != EL_FLAMES && element2 != EL_FLAMES)
+	{
+	  if (IS_PLAYER(x, y))
+	    DrawPlayerField(x, y);
+	  else
+	    DrawLevelField(x, y);
+
+	  PlaySoundLevel(x, y, SND_DRAGON_ATTACKING);
+
+	  MovDelay[x][y] = 50;
+	  Feld[newx][newy] = EL_FLAMES;
+	  if (IN_LEV_FIELD(newx1, newy1) && Feld[newx1][newy1] == EL_EMPTY)
+	    Feld[newx1][newy1] = EL_FLAMES;
+	  if (IN_LEV_FIELD(newx2, newy2) && Feld[newx2][newy2] == EL_EMPTY)
+	    Feld[newx2][newy2] = EL_FLAMES;
+	  return;
+	}
+      }
+    }
+    else if (element == EL_YAMYAM && IN_LEV_FIELD(newx, newy) &&
+	     Feld[newx][newy] == EL_DIAMOND)
+    {
+      if (IS_MOVING(newx, newy))
+	RemoveMovingField(newx, newy);
+      else
+      {
+	Feld[newx][newy] = EL_EMPTY;
+	DrawLevelField(newx, newy);
+      }
+
+      PlaySoundLevel(x, y, SND_YAMYAM_EATING);
+    }
+    else if (element == EL_DARK_YAMYAM && IN_LEV_FIELD(newx, newy) &&
+	     IS_MAMPF2(Feld[newx][newy]))
+    {
+      if (AmoebaNr[newx][newy])
+      {
+	AmoebaCnt2[AmoebaNr[newx][newy]]--;
+	if (Feld[newx][newy] == EL_AMOEBA_FULL ||
+	    Feld[newx][newy] == EL_BD_AMOEBA)
+	  AmoebaCnt[AmoebaNr[newx][newy]]--;
+      }
+
+      if (IS_MOVING(newx, newy))
+	RemoveMovingField(newx, newy);
+      else
+      {
+	Feld[newx][newy] = EL_EMPTY;
+	DrawLevelField(newx, newy);
+      }
+
+      PlaySoundLevel(x, y, SND_DARK_YAMYAM_EATING);
+    }
+    else if ((element == EL_PACMAN || element == EL_MOLE)
+	     && IN_LEV_FIELD(newx, newy) && IS_AMOEBOID(Feld[newx][newy]))
+    {
+      if (AmoebaNr[newx][newy])
+      {
+	AmoebaCnt2[AmoebaNr[newx][newy]]--;
+	if (Feld[newx][newy] == EL_AMOEBA_FULL ||
+	    Feld[newx][newy] == EL_BD_AMOEBA)
+	  AmoebaCnt[AmoebaNr[newx][newy]]--;
+      }
+
+      if (element == EL_MOLE)
+      {
+	Feld[newx][newy] = EL_AMOEBA_SHRINKING;
+	PlaySoundLevel(x, y, SND_MOLE_EATING);
+	MovDelay[newx][newy] = 0;	/* start amoeba shrinking delay */
+	return;				/* wait for shrinking amoeba */
+      }
+      else	/* element == EL_PACMAN */
+      {
+	Feld[newx][newy] = EL_EMPTY;
+	DrawLevelField(newx, newy);
+	PlaySoundLevel(x, y, SND_PACMAN_EATING);
+      }
+    }
+    else if (element == EL_MOLE && IN_LEV_FIELD(newx, newy) &&
+	     (Feld[newx][newy] == EL_AMOEBA_SHRINKING ||
+	      (Feld[newx][newy] == EL_EMPTY && Stop[newx][newy])))
+    {
+      /* wait for shrinking amoeba to completely disappear */
+      return;
+    }
+    else if (!IN_LEV_FIELD(newx, newy) || !IS_FREE(newx, newy))
+    {
+      /* object was running against a wall */
+
+      TurnRound(x, y);
+
+      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)
+	DrawLevelField(x, y);
+      else if (element == EL_BD_BUTTERFLY || element == EL_BD_FIREFLY)
+	DrawLevelElementAnimation(x, y, element);
+      else if (element == EL_SATELLITE)
+	DrawLevelElementAnimation(x, y, element);
+      else if (element == EL_SP_ELECTRON)
+	DrawLevelElementAnimation(x, y, element);
+
+      if (DONT_TOUCH(element))
+	TestIfBadThingTouchesHero(x, y);
+
+      PlaySoundLevelAction(x, y, ACTION_WAITING);
+
+      return;
+    }
+
+    InitMovingField(x, y, MovDir[x][y]);
+
+    PlaySoundLevelAction(x, y, ACTION_MOVING);
+  }
+
+  if (MovDir[x][y])
+    ContinueMoving(x, y);
+}
+
+void ContinueMoving(int x, int y)
+{
+  int element = Feld[x][y];
+  int direction = MovDir[x][y];
+  int dx = (direction == MV_LEFT ? -1 : direction == MV_RIGHT ? +1 : 0);
+  int dy = (direction == MV_UP   ? -1 : direction == MV_DOWN  ? +1 : 0);
+  int horiz_move = (dx != 0);
+  int newx = x + dx, newy = y + dy;
+  int step = (horiz_move ? dx : dy) * TILEX / 8;
+
+  if (element == EL_AMOEBA_DROP || element == EL_AMOEBA_DRIPPING)
+    step /= 2;
+  else if (element == EL_QUICKSAND_FILLING ||
+	   element == EL_QUICKSAND_EMPTYING)
+    step /= 4;
+  else if (element == EL_MAGIC_WALL_FILLING ||
+	   element == EL_BD_MAGIC_WALL_FILLING ||
+	   element == EL_MAGIC_WALL_EMPTYING ||
+	   element == EL_BD_MAGIC_WALL_EMPTYING)
+    step /= 2;
+  else if (CAN_FALL(element) && horiz_move &&
+	   y < lev_fieldy-1 && IS_BELT_ACTIVE(Feld[x][y+1]))
+    step /= 2;
+  else if (element == EL_SPRING && horiz_move)
+    step *= 2;
+
+#if OLD_GAME_BEHAVIOUR
+  else if (CAN_FALL(element) && horiz_move && !IS_SP_ELEMENT(element))
+    step*=2;
+#endif
+
+  MovPos[x][y] += step;
+
+  if (ABS(MovPos[x][y]) >= TILEX)	/* object reached its destination */
+  {
+    Feld[x][y] = EL_EMPTY;
+    Feld[newx][newy] = element;
+
+    if (element == EL_MOLE)
+    {
+      int i;
+      static int xy[4][2] =
+      {
+	{ 0, -1 },
+	{ -1, 0 },
+	{ +1, 0 },
+	{ 0, +1 }
+      };
+
+      Feld[x][y] = EL_SAND;
+      DrawLevelField(x, y);
+
+      for(i=0; i<4; i++)
+      {
+	int xx, yy;
+
+	xx = x + xy[i][0];
+	yy = y + xy[i][1];
+
+	if (IN_LEV_FIELD(xx, yy) && Feld[xx][yy] == EL_SAND)
+	  DrawLevelField(xx, yy);	/* for "DrawCrumbledSand()" */
+      }
+    }
+
+    if (element == EL_QUICKSAND_FILLING)
+    {
+      element = Feld[newx][newy] = get_next_element(element);
+      Store[newx][newy] = Store[x][y];
+    }
+    else if (element == EL_QUICKSAND_EMPTYING)
+    {
+      Feld[x][y] = get_next_element(element);
+      element = Feld[newx][newy] = Store[x][y];
+    }
+    else if (element == EL_MAGIC_WALL_FILLING)
+    {
+      element = Feld[newx][newy] = get_next_element(element);
+      if (!game.magic_wall_active)
+	element = Feld[newx][newy] = EL_MAGIC_WALL_DEAD;
+      Store[newx][newy] = Store[x][y];
+    }
+    else if (element == EL_MAGIC_WALL_EMPTYING)
+    {
+      Feld[x][y] = get_next_element(element);
+      if (!game.magic_wall_active)
+	Feld[x][y] = EL_MAGIC_WALL_DEAD;
+      element = Feld[newx][newy] = Store[x][y];
+    }
+    else if (element == EL_BD_MAGIC_WALL_FILLING)
+    {
+      element = Feld[newx][newy] = get_next_element(element);
+      if (!game.magic_wall_active)
+	element = Feld[newx][newy] = EL_BD_MAGIC_WALL_DEAD;
+      Store[newx][newy] = Store[x][y];
+    }
+    else if (element == EL_BD_MAGIC_WALL_EMPTYING)
+    {
+      Feld[x][y] = get_next_element(element);
+      if (!game.magic_wall_active)
+	Feld[x][y] = EL_BD_MAGIC_WALL_DEAD;
+      element = Feld[newx][newy] = Store[x][y];
+    }
+    else if (element == EL_AMOEBA_DRIPPING)
+    {
+      Feld[x][y] = get_next_element(element);
+      element = Feld[newx][newy] = Store[x][y];
+    }
+    else if (Store[x][y] == EL_ACID)
+    {
+      element = Feld[newx][newy] = EL_ACID;
+    }
+
+    Store[x][y] = 0;
+    MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
+    MovDelay[newx][newy] = 0;
+
+    GfxAction[newx][newy] = GfxAction[x][y];	/* keep action one frame */
+    GfxAction[x][y] = ACTION_DEFAULT;
+
+#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
+
+    DrawLevelField(x, y);
+    DrawLevelField(newx, newy);
+
+    Stop[newx][newy] = TRUE;
+    JustStopped[newx][newy] = 3;
+
+    if (DONT_TOUCH(element))	/* object may be nasty to player or others */
+    {
+      TestIfBadThingTouchesHero(newx, newy);
+      TestIfBadThingTouchesFriend(newx, newy);
+      TestIfBadThingTouchesOtherBadThing(newx, newy);
+    }
+    else if (element == EL_PENGUIN)
+      TestIfFriendTouchesBadThing(newx, newy);
+
+    if (CAN_SMASH(element) && direction == MV_DOWN &&
+	(newy == lev_fieldy-1 || !IS_FREE(x, newy+1)))
+      Impact(x, newy);
+  }
+  else				/* still moving on */
+  {
+#if 0
+    if (GfxAction[x][y] == ACTION_DEFAULT)
+    {
+      printf("reset GfxAction...\n");
+
+      GfxAction[x][y] = ACTION_MOVING;
+    }
+#endif
+
+    DrawLevelField(x, y);
+  }
+}
+
+int AmoebeNachbarNr(int ax, int ay)
+{
+  int i;
+  int element = Feld[ax][ay];
+  int group_nr = 0;
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+
+  for (i=0; i<4; i++)
+  {
+    int x = ax + xy[i][0];
+    int y = ay + xy[i][1];
+
+    if (!IN_LEV_FIELD(x, y))
+      continue;
+
+    if (Feld[x][y] == element && AmoebaNr[x][y] > 0)
+      group_nr = AmoebaNr[x][y];
+  }
+
+  return group_nr;
+}
+
+void AmoebenVereinigen(int ax, int ay)
+{
+  int i, x, y, xx, yy;
+  int new_group_nr = AmoebaNr[ax][ay];
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+
+  if (new_group_nr == 0)
+    return;
+
+  for (i=0; i<4; i++)
+  {
+    x = ax + xy[i][0];
+    y = ay + xy[i][1];
+
+    if (!IN_LEV_FIELD(x, y))
+      continue;
+
+    if ((Feld[x][y] == EL_AMOEBA_FULL ||
+	 Feld[x][y] == EL_BD_AMOEBA ||
+	 Feld[x][y] == EL_AMOEBA_DEAD) &&
+	AmoebaNr[x][y] != new_group_nr)
+    {
+      int old_group_nr = AmoebaNr[x][y];
+
+      if (old_group_nr == 0)
+	return;
+
+      AmoebaCnt[new_group_nr] += AmoebaCnt[old_group_nr];
+      AmoebaCnt[old_group_nr] = 0;
+      AmoebaCnt2[new_group_nr] += AmoebaCnt2[old_group_nr];
+      AmoebaCnt2[old_group_nr] = 0;
+
+      for (yy=0; yy<lev_fieldy; yy++)
+      {
+	for (xx=0; xx<lev_fieldx; xx++)
+	{
+	  if (AmoebaNr[xx][yy] == old_group_nr)
+	    AmoebaNr[xx][yy] = new_group_nr;
+	}
+      }
+    }
+  }
+}
+
+void AmoebeUmwandeln(int ax, int ay)
+{
+  int i, x, y;
+
+  if (Feld[ax][ay] == EL_AMOEBA_DEAD)
+  {
+    int group_nr = AmoebaNr[ax][ay];
+
+#ifdef DEBUG
+    if (group_nr == 0)
+    {
+      printf("AmoebeUmwandeln(): ax = %d, ay = %d\n", ax, ay);
+      printf("AmoebeUmwandeln(): This should never happen!\n");
+      return;
+    }
+#endif
+
+    for (y=0; y<lev_fieldy; y++)
+    {
+      for (x=0; x<lev_fieldx; x++)
+      {
+	if (Feld[x][y] == EL_AMOEBA_DEAD && AmoebaNr[x][y] == group_nr)
+	{
+	  AmoebaNr[x][y] = 0;
+	  Feld[x][y] = EL_AMOEBA_TO_DIAMOND;
+	}
+      }
+    }
+    PlaySoundLevel(ax, ay, (IS_GEM(level.amoeba_content) ?
+			    SND_AMOEBA_TURNING_TO_GEM :
+			    SND_AMOEBA_TURNING_TO_ROCK));
+    Bang(ax, ay);
+  }
+  else
+  {
+    static int xy[4][2] =
+    {
+      { 0, -1 },
+      { -1, 0 },
+      { +1, 0 },
+      { 0, +1 }
+    };
+
+    for (i=0; i<4; i++)
+    {
+      x = ax + xy[i][0];
+      y = ay + xy[i][1];
+
+      if (!IN_LEV_FIELD(x, y))
+	continue;
+
+      if (Feld[x][y] == EL_AMOEBA_TO_DIAMOND)
+      {
+	PlaySoundLevel(x, y, (IS_GEM(level.amoeba_content) ?
+			      SND_AMOEBA_TURNING_TO_GEM :
+			      SND_AMOEBA_TURNING_TO_ROCK));
+	Bang(x, y);
+      }
+    }
+  }
+}
+
+void AmoebeUmwandelnBD(int ax, int ay, int new_element)
+{
+  int x, y;
+  int group_nr = AmoebaNr[ax][ay];
+  boolean done = FALSE;
+
+#ifdef DEBUG
+  if (group_nr == 0)
+  {
+    printf("AmoebeUmwandelnBD(): ax = %d, ay = %d\n", ax, ay);
+    printf("AmoebeUmwandelnBD(): This should never happen!\n");
+    return;
+  }
+#endif
+
+  for (y=0; y<lev_fieldy; y++)
+  {
+    for (x=0; x<lev_fieldx; x++)
+    {
+      if (AmoebaNr[x][y] == group_nr &&
+	  (Feld[x][y] == EL_AMOEBA_DEAD ||
+	   Feld[x][y] == EL_BD_AMOEBA ||
+	   Feld[x][y] == EL_AMOEBA_CREATING))
+      {
+	AmoebaNr[x][y] = 0;
+	Feld[x][y] = new_element;
+	InitField(x, y, FALSE);
+	DrawLevelField(x, y);
+	done = TRUE;
+      }
+    }
+  }
+
+  if (done)
+    PlaySoundLevel(ax, ay, (new_element == EL_BD_ROCK ?
+			    SND_BD_AMOEBA_TURNING_TO_ROCK :
+			    SND_BD_AMOEBA_TURNING_TO_GEM));
+}
+
+void AmoebeWaechst(int x, int y)
+{
+  static unsigned long sound_delay = 0;
+  static unsigned long sound_delay_value = 0;
+
+  if (!MovDelay[x][y])		/* start new growing cycle */
+  {
+    MovDelay[x][y] = 7;
+
+    if (DelayReached(&sound_delay, sound_delay_value))
+    {
+      if (Store[x][y] == EL_BD_AMOEBA)
+	PlaySoundLevel(x, y, SND_BD_AMOEBA_CREATING);
+      else
+	PlaySoundLevel(x, y, SND_AMOEBA_CREATING);
+      sound_delay_value = 30;
+    }
+  }
+
+  if (MovDelay[x][y])		/* wait some time before growing bigger */
+  {
+    MovDelay[x][y]--;
+    if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+    {
+      int frame = getGraphicAnimationFrame(IMG_AMOEBA_CREATING,
+					   6 - MovDelay[x][y]);
+
+      DrawGraphic(SCREENX(x), SCREENY(y), IMG_AMOEBA_CREATING, frame);
+    }
+
+    if (!MovDelay[x][y])
+    {
+      Feld[x][y] = Store[x][y];
+      Store[x][y] = 0;
+      DrawLevelField(x, y);
+    }
+  }
+}
+
+void AmoebaDisappearing(int x, int y)
+{
+  static unsigned long sound_delay = 0;
+  static unsigned long sound_delay_value = 0;
+
+  if (!MovDelay[x][y])		/* start new shrinking cycle */
+  {
+    MovDelay[x][y] = 7;
+
+    if (DelayReached(&sound_delay, sound_delay_value))
+      sound_delay_value = 30;
+  }
+
+  if (MovDelay[x][y])		/* wait some time before shrinking */
+  {
+    MovDelay[x][y]--;
+    if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+    {
+      int frame = getGraphicAnimationFrame(IMG_AMOEBA_SHRINKING,
+					   6 - MovDelay[x][y]);
+
+      DrawGraphic(SCREENX(x), SCREENY(y), IMG_AMOEBA_SHRINKING, frame);
+    }
+
+    if (!MovDelay[x][y])
+    {
+      Feld[x][y] = EL_EMPTY;
+      DrawLevelField(x, y);
+
+      /* don't let mole enter this field in this cycle;
+	 (give priority to objects falling to this field from above) */
+      Stop[x][y] = TRUE;
+    }
+  }
+}
+
+void AmoebeAbleger(int ax, int ay)
+{
+  int i;
+  int element = Feld[ax][ay];
+  int newax = ax, neway = ay;
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+
+  if (!level.amoeba_speed)
+  {
+    Feld[ax][ay] = EL_AMOEBA_DEAD;
+    DrawLevelField(ax, ay);
+    return;
+  }
+
+  if (!MovDelay[ax][ay])	/* start making new amoeba field */
+    MovDelay[ax][ay] = RND(FRAMES_PER_SECOND * 25 / (1 + level.amoeba_speed));
+
+  if (MovDelay[ax][ay])		/* wait some time before making new amoeba */
+  {
+    MovDelay[ax][ay]--;
+    if (MovDelay[ax][ay])
+      return;
+  }
+
+  if (element == EL_AMOEBA_WET)	/* object is an acid / amoeba drop */
+  {
+    int start = RND(4);
+    int x = ax + xy[start][0];
+    int y = ay + xy[start][1];
+
+    if (!IN_LEV_FIELD(x, y))
+      return;
+
+    if (IS_FREE(x, y) ||
+	Feld[x][y] == EL_SAND || Feld[x][y] == EL_QUICKSAND_EMPTY)
+    {
+      newax = x;
+      neway = y;
+    }
+
+    if (newax == ax && neway == ay)
+      return;
+  }
+  else				/* normal or "filled" (BD style) amoeba */
+  {
+    int start = RND(4);
+    boolean waiting_for_player = FALSE;
+
+    for (i=0; i<4; i++)
+    {
+      int j = (start + i) % 4;
+      int x = ax + xy[j][0];
+      int y = ay + xy[j][1];
+
+      if (!IN_LEV_FIELD(x, y))
+	continue;
+
+      if (IS_FREE(x, y) ||
+	  Feld[x][y] == EL_SAND || Feld[x][y] == EL_QUICKSAND_EMPTY)
+      {
+	newax = x;
+	neway = y;
+	break;
+      }
+      else if (IS_PLAYER(x, y))
+	waiting_for_player = TRUE;
+    }
+
+    if (newax == ax && neway == ay)		/* amoeba cannot grow */
+    {
+      if (i == 4 && (!waiting_for_player || game.emulation == EMU_BOULDERDASH))
+      {
+	Feld[ax][ay] = EL_AMOEBA_DEAD;
+	DrawLevelField(ax, ay);
+	AmoebaCnt[AmoebaNr[ax][ay]]--;
+
+	if (AmoebaCnt[AmoebaNr[ax][ay]] <= 0)	/* amoeba is completely dead */
+	{
+	  if (element == EL_AMOEBA_FULL)
+	    AmoebeUmwandeln(ax, ay);
+	  else if (element == EL_BD_AMOEBA)
+	    AmoebeUmwandelnBD(ax, ay, level.amoeba_content);
+	}
+      }
+      return;
+    }
+    else if (element == EL_AMOEBA_FULL || element == EL_BD_AMOEBA)
+    {
+      /* amoeba gets larger by growing in some direction */
+
+      int new_group_nr = AmoebaNr[ax][ay];
+
+#ifdef DEBUG
+  if (new_group_nr == 0)
+  {
+    printf("AmoebeAbleger(): newax = %d, neway = %d\n", newax, neway);
+    printf("AmoebeAbleger(): This should never happen!\n");
+    return;
+  }
+#endif
+
+      AmoebaNr[newax][neway] = new_group_nr;
+      AmoebaCnt[new_group_nr]++;
+      AmoebaCnt2[new_group_nr]++;
+
+      /* if amoeba touches other amoeba(s) after growing, unify them */
+      AmoebenVereinigen(newax, neway);
+
+      if (element == EL_BD_AMOEBA && AmoebaCnt2[new_group_nr] >= 200)
+      {
+	AmoebeUmwandelnBD(newax, neway, EL_BD_ROCK);
+	return;
+      }
+    }
+  }
+
+  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 */
+    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);
+  }
+  else
+  {
+    InitMovingField(ax, ay, MV_DOWN);		/* drop dripping from amoeba */
+    Feld[ax][ay] = EL_AMOEBA_DRIPPING;
+    Store[ax][ay] = EL_AMOEBA_DROP;
+    ContinueMoving(ax, ay);
+    return;
+  }
+
+  DrawLevelField(newax, neway);
+}
+
+void Life(int ax, int ay)
+{
+  int x1, y1, x2, y2;
+  static int life[4] = { 2, 3, 3, 3 };	/* parameters for "game of life" */
+  int life_time = 40;
+  int element = Feld[ax][ay];
+  boolean changed = FALSE;
+
+  if (Stop[ax][ay])
+    return;
+
+  if (!MovDelay[ax][ay])	/* start new "game of life" cycle */
+    MovDelay[ax][ay] = life_time;
+
+  if (MovDelay[ax][ay])		/* wait some time before next cycle */
+  {
+    MovDelay[ax][ay]--;
+    if (MovDelay[ax][ay])
+      return;
+  }
+
+  for (y1=-1; y1<2; y1++) for(x1=-1; x1<2; x1++)
+  {
+    int xx = ax+x1, yy = ay+y1;
+    int nachbarn = 0;
+
+    if (!IN_LEV_FIELD(xx, yy))
+      continue;
+
+    for (y2=-1; y2<2; y2++) for (x2=-1; x2<2; x2++)
+    {
+      int x = xx+x2, y = yy+y2;
+
+      if (!IN_LEV_FIELD(x, y) || (x == xx && y == yy))
+	continue;
+
+      if (((Feld[x][y] == element ||
+	    (element == EL_GAMEOFLIFE && IS_PLAYER(x, y))) &&
+	   !Stop[x][y]) ||
+	  (IS_FREE(x, y) && Stop[x][y]))
+	nachbarn++;
+    }
+
+    if (xx == ax && yy == ay)		/* field in the middle */
+    {
+      if (nachbarn < life[0] || nachbarn > life[1])
+      {
+	Feld[xx][yy] = EL_EMPTY;
+	if (!Stop[xx][yy])
+	  DrawLevelField(xx, yy);
+	Stop[xx][yy] = TRUE;
+	changed = TRUE;
+      }
+    }
+    else if (IS_FREE(xx, yy) || Feld[xx][yy] == EL_SAND)
+    {					/* free border field */
+      if (nachbarn >= life[2] && nachbarn <= life[3])
+      {
+	Feld[xx][yy] = element;
+	MovDelay[xx][yy] = (element == EL_GAMEOFLIFE ? 0 : life_time-1);
+	if (!Stop[xx][yy])
+	  DrawLevelField(xx, yy);
+	Stop[xx][yy] = TRUE;
+	changed = TRUE;
+      }
+    }
+  }
+
+  if (changed)
+    PlaySoundLevel(ax, ay, element == EL_GAMEOFLIFE ? SND_GAMEOFLIFE_CREATING :
+		   SND_BIOMAZE_CREATING);
+}
+
+static void InitRobotWheel(int x, int y)
+{
+  MovDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+}
+
+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;
+}
+
+#if 1
+void RobotWheel(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;
+    }
+  }
+
+  Feld[x][y] = EL_ROBOT_WHEEL;
+  DrawLevelField(x, y);
+
+  if (ZX == x && ZY == y)
+    ZX = ZY = -1;
+}
+#endif
+
+static void InitTimegateWheel(int x, int y)
+{
+  MovDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+}
+
+static void RunTimegateWheel(int x, int y)
+{
+  PlaySoundLevel(x, y, SND_TIMEGATE_SWITCH_ACTIVE);
+}
+
+#if 1
+void TimegateWheel(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_TIMEGATE_SWITCH_ACTIVE, -1);
+
+	DrawGraphic(SCREENX(x), SCREENY(y), IMG_TIMEGATE_SWITCH_ACTIVE, frame);
+      }
+
+      PlaySoundLevel(x, y, SND_TIMEGATE_SWITCH_ACTIVE);
+
+      return;
+    }
+  }
+
+  Feld[x][y] = EL_TIMEGATE_SWITCH;
+  DrawLevelField(x, y);
+
+  /* THIS HAS NO EFFECT AT ALL! */
+#if 1
+  /* !!! THIS LOOKS WRONG !!! */
+  if (ZX == x && ZY == y)
+    ZX = ZY = -1;
+#endif
+
+}
+#endif
+
+#if 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);
+}
+#endif
+
+#if 1
+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);
+}
+#endif
+
+void SiebAktivieren(int x, int y, int type)
+{
+  int graphic = (type == 1 ? IMG_MAGIC_WALL_FULL : IMG_BD_MAGIC_WALL_FULL);
+
+  DrawLevelGraphicAnimation(x, y, graphic);
+}
+
+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)
+    return;
+
+  Feld[x][y] = EL_EXIT_OPENING;
+
+  PlaySoundLevelNearest(x, y, SND_EXIT_OPENING);
+}
+
+void CheckExitSP(int x, int y)
+{
+  if (local_player->gems_still_needed > 0)
+    return;
+
+  Feld[x][y] = EL_SP_EXIT_OPEN;
+
+  PlaySoundLevelNearest(x, y, SND_SP_EXIT_OPENING);
+}
+
+#if 1
+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);
+      }
+    }
+
+    if (MovDelay[x][y])
+      return;
+  }
+
+  Feld[x][y] = EL_EXIT_OPEN;
+  DrawLevelField(x, y);
+}
+#endif
+
+#if 1
+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);
+      }
+    }
+
+    if (MovDelay[x][y])
+      return;
+  }
+
+  Feld[x][y] = EL_SWITCHGATE_OPEN;
+  DrawLevelField(x, y);
+}
+#endif
+
+#if 1
+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);
+      }
+    }
+
+    if (MovDelay[x][y])
+      return;
+  }
+
+  Feld[x][y] = EL_SWITCHGATE_CLOSED;
+  DrawLevelField(x, y);
 }
+#endif
 
-BOOL NewHiScore()
+#if 1
+void OpenTimegate(int x, int y)
 {
-  int k,l;
-  int position = -1;
-
-  LoadScore(level_nr);
+  int delay = 6;
 
-  if (!strcmp(player.alias_name,EMPTY_ALIAS) ||
-      Score<highscore[MAX_SCORE_ENTRIES-1].Score) 
-    return(-1);
+  if (!MovDelay[x][y])		/* next animation frame */
+    MovDelay[x][y] = 5 * delay;
 
-  for(k=0;k<MAX_SCORE_ENTRIES;k++) 
+  if (MovDelay[x][y])		/* wait some time before next frame */
   {
-    if (Score>highscore[k].Score)	/* Spieler kommt in Highscore-Liste */
+    MovDelay[x][y]--;
+
+    if (!(MovDelay[x][y] % delay))
     {
-      if (k<MAX_SCORE_ENTRIES-1)
+      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
       {
-	int m = MAX_SCORE_ENTRIES-1;
-
-#ifdef ONE_PER_NAME
-	for(l=k;l<MAX_SCORE_ENTRIES;l++)
-	  if (!strcmp(player.alias_name,highscore[l].Name))
-	    m = l;
-	if (m==k)	/* Spieler überschreibt seine alte Position */
-	  goto put_into_list;
-#endif
+	int frame = getGraphicAnimationFrame(IMG_TIMEGATE_OPENING,
+					     29 - MovDelay[x][y]);
 
-	for(l=m;l>k;l--)
-	{
-	  strcpy(highscore[l].Name,highscore[l-1].Name);
-	  highscore[l].Score = highscore[l-1].Score;
-	}
+	DrawGraphic(SCREENX(x), SCREENY(y), IMG_TIMEGATE_OPENING, frame);
       }
-
-#ifdef ONE_PER_NAME
-      put_into_list:
-#endif
-      sprintf(highscore[k].Name,player.alias_name);
-      highscore[k].Score = Score; 
-      position = k;
-      break;
     }
 
-#ifdef ONE_PER_NAME
-    else if (!strcmp(player.alias_name,highscore[k].Name))
-      break;	/* Spieler schon mit besserer Punktzahl in der Liste */
-#endif
-
+    if (MovDelay[x][y])
+      return;
   }
 
-  if (position>=0) 
-    SaveScore(level_nr);
-
-  return(position);
+  Feld[x][y] = EL_TIMEGATE_OPEN;
+  DrawLevelField(x, y);
 }
+#endif
 
-void InitMovingField(int x, int y, int direction)
+#if 1
+void CloseTimegate(int x, int y)
 {
-  int newx = x + (direction==MV_LEFT ? -1 : direction==MV_RIGHT ? +1 : 0);
-  int newy = y + (direction==MV_UP   ? -1 : direction==MV_DOWN  ? +1 : 0);
+  int delay = 6;
 
-  CheckMoving = TRUE;
-  MovDir[x][y] = direction;
-  MovDir[newx][newy] = direction;
-  if (Feld[newx][newy]==EL_LEERRAUM)
-    Feld[newx][newy] = EL_BLOCKED;
-}
+  if (!MovDelay[x][y])		/* next animation frame */
+    MovDelay[x][y] = 5 * delay;
 
-void Moving2Blocked(int x, int y, int *goes_to_x, int *goes_to_y)
-{
-  int direction = MovDir[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);
+  if (MovDelay[x][y])		/* wait some time before next frame */
+  {
+    MovDelay[x][y]--;
 
-  *goes_to_x = newx;
-  *goes_to_y = newy;
-}
+    if (!(MovDelay[x][y] % delay))
+    {
+      if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+      {
+	int frame = getGraphicAnimationFrame(IMG_TIMEGATE_CLOSING,
+					     29 - MovDelay[x][y]);
 
-void Blocked2Moving(int x, int y, int *comes_from_x, int *comes_from_y)
-{
-  int oldx = x, oldy = y;
-  int direction = MovDir[x][y];
+	DrawGraphic(SCREENX(x), SCREENY(y), IMG_TIMEGATE_CLOSING, frame);
+      }
+    }
 
-  if (direction==MV_LEFT)
-    oldx++;
-  else if (direction==MV_RIGHT)
-    oldx--;
-  else if (direction==MV_UP)
-    oldy++;
-  else if (direction==MV_DOWN)
-    oldy--;
+    if (MovDelay[x][y])
+      return;
+  }
 
-  *comes_from_x = oldx;
-  *comes_from_y = oldy;
+  Feld[x][y] = EL_TIMEGATE_CLOSED;
+  DrawLevelField(x, y);
 }
+#endif
 
-int MovingOrBlocked2Element(int x, int y)
+static void CloseAllOpenTimegates()
 {
-  int element = Feld[x][y];
+  int x, y;
 
-  if (element==EL_BLOCKED)
+  for (y=0; y<lev_fieldy; y++)
   {
-    int oldx,oldy;
+    for (x=0; x<lev_fieldx; x++)
+    {
+      int element = Feld[x][y];
 
-    Blocked2Moving(x,y,&oldx,&oldy);
-    return(Feld[oldx][oldy]);
+      if (element == EL_TIMEGATE_OPEN || element == EL_TIMEGATE_OPENING)
+      {
+	Feld[x][y] = EL_TIMEGATE_CLOSING;
+	PlaySoundLevel(x, y, SND_TIMEGATE_CLOSING);
+      }
+    }
   }
-  else
-    return(element);
 }
 
-void RemoveMovingField(int x, int y)
+void EdelsteinFunkeln(int x, int y)
 {
-  int oldx=x,oldy=y, newx=x,newy=y;
-
-  if (Feld[x][y]!=EL_BLOCKED && !IS_MOVING(x,y))
+  if (!IN_SCR_FIELD(SCREENX(x), SCREENY(y)) || IS_MOVING(x, y))
     return;
 
-  if (IS_MOVING(x,y))
-  {
-    Moving2Blocked(x,y,&newx,&newy);
-    if (Feld[newx][newy]!=EL_BLOCKED)
-      return;
-  }
-  else if (Feld[x][y]==EL_BLOCKED)
+  if (Feld[x][y] == EL_BD_DIAMOND)
+#if 0
+    DrawLevelElementAnimation(x, y, el2img(Feld[x][y]));
+#else
+    return;
+#endif
+  else
   {
-    Blocked2Moving(x,y,&oldx,&oldy);
-    if (!IS_MOVING(oldx,oldy))
-      return;
-  }
+    if (MovDelay[x][y] == 0)	/* next animation frame */
+      MovDelay[x][y] = 11 * !SimpleRND(500);
 
-  Feld[oldx][oldy] = EL_LEERRAUM;
-  Feld[newx][newy] = EL_LEERRAUM;
-  MovPos[oldx][oldy] = MovDir[oldx][oldy] = MovDelay[oldx][oldy] = 0;
-  MovPos[newx][newy] = MovDir[newx][newy] = MovDelay[newx][newy] = 0;
-  DrawLevelField(oldx,oldy);
-  DrawLevelField(newx,newy);
-}
+    if (MovDelay[x][y] != 0)	/* wait some time before next frame */
+    {
+      MovDelay[x][y]--;
 
-void DrawDynamite(int x, int y)
-{
-  int phase = (48-MovDelay[x][y])/6;
+      if (setup.direct_draw && MovDelay[x][y])
+	SetDrawtoField(DRAW_BUFFERED);
 
-  if (!IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-    return;
+#if 0
+      DrawGraphic(SCREENX(x), SCREENY(y), el2img(Feld[x][y]), 0);
+#else
+      DrawLevelElementAnimation(x, y, Feld[x][y]);
+#endif
 
-  if (phase>6)
-    phase = 6;
+      if (MovDelay[x][y] != 0)
+      {
+	int frame = getGraphicAnimationFrame(IMG_TWINKLE_WHITE,
+					     10 - MovDelay[x][y]);
 
-  if (Store[x][y])
-  {
-    DrawGraphic(SCROLLX(x),SCROLLY(y),el2gfx(Store[x][y]));
-    if (PLAYER(x,y))
-      DrawGraphicThruMask(SCROLLX(JX),SCROLLY(JY),GFX_SPIELFIGUR);
-  }
-  else if (PLAYER(x,y))
-    DrawGraphic(SCROLLX(JX),SCROLLY(JY),GFX_SPIELFIGUR);
+	DrawGraphicThruMask(SCREENX(x), SCREENY(y), IMG_TWINKLE_WHITE, frame);
 
-  if (Store[x][y] || PLAYER(x,y))
-    DrawGraphicThruMask(SCROLLX(x),SCROLLY(y),GFX_DYNAMIT+phase);
-  else
-    DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_DYNAMIT+phase);
+	if (setup.direct_draw)
+	{
+	  int dest_x, dest_y;
+
+	  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);
+	}
+      }
+    }
+  }
 }
 
-void CheckDynamite(int x, int y)
+void MauerWaechst(int x, int y)
 {
-  CheckExploding = TRUE;
+  int delay = 6;
 
-  if (MovDelay[x][y])		/* neues Dynamit / in Wartezustand */
+  if (!MovDelay[x][y])		/* next animation frame */
+    MovDelay[x][y] = 3 * delay;
+
+  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 graphic = el_dir2img(Feld[x][y], MovDir[x][y]);
+      int frame = getGraphicAnimationFrame(graphic, 17 - MovDelay[x][y]);
+
+      DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+    }
+
+    if (!MovDelay[x][y])
     {
-      if (!(MovDelay[x][y] % 6))
+      if (MovDir[x][y] == MV_LEFT)
+      {
+	if (IN_LEV_FIELD(x - 1, y) && IS_MAUER(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]))
+	  DrawLevelField(x + 1, y);
+      }
+      else if (MovDir[x][y] == MV_UP)
       {
-	DrawDynamite(x,y);
-	PlaySoundLevel(x,y,SND_ZISCH);
+	if (IN_LEV_FIELD(x, y - 1) && IS_MAUER(Feld[x][y - 1]))
+	  DrawLevelField(x, y - 1);
+      }
+      else
+      {
+	if (IN_LEV_FIELD(x, y + 1) && IS_MAUER(Feld[x][y + 1]))
+	  DrawLevelField(x, y + 1);
       }
 
-      return;
+      Feld[x][y] = Store[x][y];
+      Store[x][y] = 0;
+      MovDir[x][y] = MV_NO_MOVING;
+      DrawLevelField(x, y);
     }
   }
-
-  StopSound(SND_ZISCH);
-  Bang(x,y);
 }
 
-void Explode(int ex, int ey, int phase, int mode)
+void MauerAbleger(int ax, int ay)
 {
-  int x,y;
-  int num_phase = 9, delay = 1;
-  int last_phase = num_phase*delay;
-  int half_phase = (num_phase/2)*delay;
+  int element = Feld[ax][ay];
+  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 (phase==0)			/* Feld 'Store' initialisieren */
+  if (!MovDelay[ax][ay])	/* start building new wall */
+    MovDelay[ax][ay] = 6;
+
+  if (MovDelay[ax][ay])		/* wait some time before building new wall */
   {
-    int center_element = Feld[ex][ey];
+    MovDelay[ax][ay]--;
+    if (MovDelay[ax][ay])
+      return;
+  }
 
-    if (center_element==EL_BLOCKED)
-      center_element = MovingOrBlocked2Element(ex,ey);
+  if (IN_LEV_FIELD(ax, ay-1) && IS_FREE(ax, ay-1))
+    oben_frei = TRUE;
+  if (IN_LEV_FIELD(ax, ay+1) && IS_FREE(ax, ay+1))
+    unten_frei = TRUE;
+  if (IN_LEV_FIELD(ax-1, ay) && IS_FREE(ax-1, ay))
+    links_frei = TRUE;
+  if (IN_LEV_FIELD(ax+1, ay) && IS_FREE(ax+1, ay))
+    rechts_frei = TRUE;
 
-    for(y=ey-1;y<ey+2;y++) for(x=ex-1;x<ex+2;x++)
+  if (element == EL_WALL_GROWING_Y || element == EL_WALL_GROWING_XY)
+  {
+    if (oben_frei)
     {
-      int element = Feld[x][y];
+      Feld[ax][ay-1] = EL_WALL_GROWING_ACTIVE;
+      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);
+      new_wall = TRUE;
+    }
+    if (unten_frei)
+    {
+      Feld[ax][ay+1] = EL_WALL_GROWING_ACTIVE;
+      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);
+      new_wall = TRUE;
+    }
+  }
 
-      if (!IN_LEV_FIELD(x,y) || IS_MASSIV(element))
-	continue;
+  if (element == EL_WALL_GROWING_X || element == EL_WALL_GROWING_XY ||
+      element == EL_WALL_GROWING)
+  {
+    if (links_frei)
+    {
+      Feld[ax-1][ay] = EL_WALL_GROWING_ACTIVE;
+      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);
+      new_wall = TRUE;
+    }
 
-      if ((mode!=EX_NORMAL || center_element==EL_AMOEBA2DIAM) &&
-	  (x!=ex || y!=ey))
-	continue;
+    if (rechts_frei)
+    {
+      Feld[ax+1][ay] = EL_WALL_GROWING_ACTIVE;
+      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);
+      new_wall = TRUE;
+    }
+  }
 
-      if (element==EL_EXPLODING)
-	element = Store2[x][y];
+  if (element == EL_WALL_GROWING && (links_frei || rechts_frei))
+    DrawLevelField(ax, ay);
 
-      if (PLAYER(ex,ey) || center_element==EL_KAEFER)
-	Store[x][y] = ((x==ex && y==ey) ? EL_DIAMANT : EL_EDELSTEIN);
-      else if (center_element==EL_MAMPFER)
-	Store[x][y] = level.mampfer_inhalt[MampferNr][x-ex+1][y-ey+1];
-      else if (center_element==EL_AMOEBA2DIAM)
-	Store[x][y] = level.amoebe_inhalt;
-      else if (element==EL_ERZ_EDEL)
-	Store[x][y] = EL_EDELSTEIN;
-      else if (element==EL_ERZ_DIAM)
-	Store[x][y] = EL_DIAMANT;
-      else if (element==EL_ERZ_EDEL2)
-	Store[x][y] = EL_EDELSTEIN2;
-      else if (element==EL_ERZ_EDEL3)
-	Store[x][y] = EL_EDELSTEIN3;
-      else if (!IS_PFORTE(Store[x][y]))
-	Store[x][y] = EL_LEERRAUM;
+  if (!IN_LEV_FIELD(ax, ay-1) || IS_MAUER(Feld[ax][ay-1]))
+    oben_massiv = TRUE;
+  if (!IN_LEV_FIELD(ax, ay+1) || IS_MAUER(Feld[ax][ay+1]))
+    unten_massiv = TRUE;
+  if (!IN_LEV_FIELD(ax-1, ay) || IS_MAUER(Feld[ax-1][ay]))
+    links_massiv = TRUE;
+  if (!IN_LEV_FIELD(ax+1, ay) || IS_MAUER(Feld[ax+1][ay]))
+    rechts_massiv = TRUE;
 
-      if (x!=ex || y!=ey || center_element==EL_AMOEBA2DIAM || mode==EX_BORDER)
-	Store2[x][y] = element;
+  if (((oben_massiv && unten_massiv) ||
+       element == EL_WALL_GROWING_X || element == EL_WALL_GROWING) &&
+      ((links_massiv && rechts_massiv) ||
+       element == EL_WALL_GROWING_Y))
+    Feld[ax][ay] = EL_WALL;
 
-      if (AmoebaNr[x][y] && (element==EL_AMOEBE_VOLL || element==EL_AMOEBING))
-	AmoebaCnt[AmoebaNr[x][y]]--;
+  if (new_wall)
+    PlaySoundLevel(ax, ay, SND_WALL_GROWING);
+}
 
-      RemoveMovingField(x,y);
-      Feld[x][y] = EL_EXPLODING;
-      MovDir[x][y] = MovPos[x][y] = 0;
-      AmoebaNr[x][y] = 0;
-      Frame[x][y] = 1;
-      Stop[x][y] = TRUE;
-    }
+void CheckForDragon(int x, int y)
+{
+  int i, j;
+  boolean dragon_found = FALSE;
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
 
-    if (center_element==EL_MAMPFER)
-      MampferNr = (MampferNr+1) % 4;
+  for (i=0; i<4; i++)
+  {
+    for (j=0; j<4; j++)
+    {
+      int xx = x + j*xy[i][0], yy = y + j*xy[i][1];
 
-    return;
+      if (IN_LEV_FIELD(xx, yy) &&
+	  (Feld[xx][yy] == EL_FLAMES || Feld[xx][yy] == EL_DRAGON))
+      {
+	if (Feld[xx][yy] == EL_DRAGON)
+	  dragon_found = TRUE;
+      }
+      else
+	break;
+    }
   }
 
-  if (Stop[ex][ey])
-    return;
-
-  x = ex;
-  y = ey;
-
-  Frame[x][y] = (phase<last_phase ? phase+1 : 0);
-
-  if (phase==half_phase)
+  if (!dragon_found)
   {
-    int element = Store2[x][y];
-
-    if (PLAYER(x,y))
-      KillHero();
-    else if (element==EL_BOMBE ||
-	     element==EL_DYNAMIT ||
-	     element==EL_DYNAMIT_AUS ||
-	     element==EL_DYNABOMB ||
-	     element==EL_KAEFER)
+    for (i=0; i<4; i++)
     {
-      Feld[x][y] = Store2[x][y];
-      Store2[x][y] = 0;
-      Bang(x,y);
+      for (j=0; j<3; j++)
+      {
+  	int xx = x + j*xy[i][0], yy = y + j*xy[i][1];
+  
+  	if (IN_LEV_FIELD(xx, yy) && Feld[xx][yy] == EL_FLAMES)
+  	{
+	  Feld[xx][yy] = EL_EMPTY;
+	  DrawLevelField(xx, yy);
+  	}
+  	else
+  	  break;
+      }
     }
-    else if (element==EL_AMOEBA2DIAM)
-      AmoebeUmwandeln(x,y);
   }
+}
+
+static void InitBuggyBase(int x, int y)
+{
+  int element = Feld[x][y];
+  int activating_delay = FRAMES_PER_SECOND / 4;
+
+  MovDelay[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 (phase==last_phase)
+static void WarnBuggyBase(int x, int y)
+{
+  int i;
+  static int xy[4][2] =
   {
-    int element;
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
 
-    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 (CAN_MOVE(element) || COULD_MOVE(element))
-      InitMovDir(x,y);
-    DrawLevelField(x,y);
-  }
-  else if (!(phase%delay) && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
+  for (i=0; i<4; i++)
   {
-    if (phase==delay)
-      ErdreichAnbroeckeln(SCROLLX(x),SCROLLY(y));
+    int xx = x + xy[i][0], yy = y + xy[i][1];
 
-    DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_EXPLOSION+(phase/delay-1));
-  }
+    if (IS_PLAYER(xx, yy))
+    {
+      PlaySoundLevel(x, y, SND_SP_BUGGY_BASE_ACTIVE);
 
-  CheckExploding = TRUE;
+      break;
+    }
+  }
 }
 
-void DynaExplode(int ex, int ey, int size)
+#if 1
+void CheckBuggyBase(int x, int y)
 {
-  int i,j;
-  static int xy[4][2] =
+  int element = Feld[x][y];
+
+  if (element == EL_SP_BUGGY_BASE)
   {
-    0,-1,
-    -1,0,
-    +1,0,
-    0,+1
-  };
+    if (MovDelay[x][y] == 0)	/* wait some time before activating base */
+    {
+      GfxFrame[x][y] = 0;
+
+      InitBuggyBase(x, y);
+    }
 
-  Explode(ex,ey,0,EX_CENTER);
+    MovDelay[x][y]--;
 
-  for(i=0;i<4;i++)
+    if (MovDelay[x][y] != 0)
+    {
+      DrawLevelElementAnimation(x, y, element);
+    }
+    else
+    {
+      Feld[x][y] = EL_SP_BUGGY_BASE_ACTIVATING;
+      DrawLevelField(x, y);
+    }
+  }
+  else if (element == EL_SP_BUGGY_BASE_ACTIVATING)
   {
-    for(j=1;j<=size;j++)
+    if (MovDelay[x][y] == 0)	/* display activation warning of buggy base */
     {
-      int x = ex+j*xy[i%4][0];
-      int y = ey+j*xy[i%4][1];
+      GfxFrame[x][y] = 0;
 
-      if (!IN_LEV_FIELD(x,y) || IS_MASSIV(Feld[x][y]))
-	break;
+      InitBuggyBase(x, y);
+    }
 
-      Explode(x,y,0,EX_BORDER);
+    MovDelay[x][y]--;
+
+    if (MovDelay[x][y] != 0)
+    {
+      DrawLevelElementAnimation(x, y, element);
+    }
+    else
+    {
+      Feld[x][y] = EL_SP_BUGGY_BASE_ACTIVE;
+      DrawLevelField(x, y);
     }
   }
+  else if (element == EL_SP_BUGGY_BASE_ACTIVE)
+  {
+    if (MovDelay[x][y] == 0)	/* start activating buggy base */
+    {
+      GfxFrame[x][y] = 0;
 
-  DynaBombsLeft++;
-}
+      InitBuggyBase(x, y);
+    }
 
-void Bang(int x, int y)
-{
-  int element = Feld[x][y];
+    MovDelay[x][y]--;
 
-  CheckExploding = TRUE;
-  PlaySoundLevel(x,y,SND_ROAAAR);
+    if (MovDelay[x][y] != 0)
+    {
+      DrawLevelElementAnimation(x, y, element);
 
-  switch(element)
-  {
-    case EL_KAEFER:
-      RaiseScore(level.score[SC_KAEFER]);
-      break;
-    case EL_FLIEGER:
-      RaiseScore(level.score[SC_FLIEGER]);
-      break;
-    case EL_MAMPFER:
-    case EL_MAMPFER2:
-      RaiseScore(level.score[SC_MAMPFER]);
-      break;
-    case EL_ZOMBIE:
-      RaiseScore(level.score[SC_ZOMBIE]);
-      break;
-    case EL_PACMAN:
-      RaiseScore(level.score[SC_PACMAN]);
-      break;
-    default:
-      break;
+      WarnBuggyBase(x, y);
+    }
+    else
+    {
+      Feld[x][y] = EL_SP_BUGGY_BASE;
+      DrawLevelField(x, y);
+    }
   }
+}
+#endif
+
+static void InitTrap(int x, int y)
+{
+  MovDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
+}
+
+static void ActivateTrap(int x, int y)
+{
+  PlaySoundLevel(x, y, SND_TRAP_ACTIVATING);
+}
 
-  if (element==EL_DYNABOMB)
-    DynaExplode(x,y,DynaBombSize);
-  else
-    Explode(x,y,0,EX_NORMAL);
+static void ChangeActiveTrap(int x, int y)
+{
+  int graphic = IMG_TRAP_ACTIVE;
+
+  /* if animation frame already drawn, correct crumbled sand border */
+  if (IS_ANIMATED(graphic))
+    if (checkDrawLevelGraphicAnimation(x, y, graphic))
+      DrawCrumbledSand(SCREENX(x), SCREENY(y));
 }
 
-void Blurb(int x, int y)
+#if 1
+void CheckTrap(int x, int y)
 {
   int element = Feld[x][y];
 
-  if (element!=EL_BLURB_LEFT && element!=EL_BLURB_RIGHT) /* Anfang */
+  if (element == EL_TRAP)
   {
-    PlaySoundLevel(x,y,SND_BLURB);
-    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))))
+    if (MovDelay[x][y] == 0)	/* wait some time before activating trap */
+      MovDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
+
+    MovDelay[x][y]--;
+
+    if (MovDelay[x][y] != 0)
     {
-      Feld[x-1][y] = EL_BLURB_LEFT;
+      /* do nothing while waiting */
     }
-    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))))
+    else
     {
-      Feld[x+1][y] = EL_BLURB_RIGHT;
+      Feld[x][y] = EL_TRAP_ACTIVE;
+      PlaySoundLevel(x, y, SND_TRAP_ACTIVATING);
     }
   }
-  else							 /* Blubbern */
+  else if (element == EL_TRAP_ACTIVE)
   {
-    int graphic = (element==EL_BLURB_LEFT ? GFX_BLURB_LEFT : GFX_BLURB_RIGHT);
+    int delay = 4;
+    int num_frames = 8;
 
-    CheckExploding = TRUE;
+    if (MovDelay[x][y] == 0)	/* start activating trap */
+    {
+      MovDelay[x][y] = num_frames * delay;
+      GfxFrame[x][y] = 0;
+    }
 
-    if (!MovDelay[x][y])	/* neue Phase / noch nicht gewartet */
-      MovDelay[x][y] = 5;
+    MovDelay[x][y]--;
 
-    if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
+    if (MovDelay[x][y] != 0)
     {
-      MovDelay[x][y]--;
-      if (MovDelay[x][y] && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-	DrawGraphic(SCROLLX(x),SCROLLY(y),graphic+4-MovDelay[x][y]);
-
-      if (!MovDelay[x][y])
-      {
-	Feld[x][y] = EL_LEERRAUM;
-	DrawLevelField(x,y);
-      }
+      if (DrawLevelElementAnimation(x, y, element))
+	DrawCrumbledSand(SCREENX(x), SCREENY(y));
+    }
+    else
+    {
+      Feld[x][y] = EL_TRAP;
+      DrawLevelField(x, y);
     }
   }
 }
+#endif
 
-void Impact(int x, int y)
+#if 1
+static void DrawBeltAnimation(int x, int y, int element)
 {
-  BOOL lastline = (y==lev_fieldy-1);
-  BOOL object_hit = FALSE;
-  int element = Feld[x][y];
-
-  /* Element darunter berührt? */
-  if (!lastline)
-    object_hit = (!IS_FREE(x,y+1) && (!IS_MOVING(x,y+1) ||
-				      MovDir[x][y+1]!=MV_DOWN ||
-				      MovPos[x][y+1]<=TILEY/2));
+  int belt_nr = getBeltNrFromBeltActiveElement(element);
+  int belt_dir = game.belt_dir[belt_nr];
 
-  /* Auftreffendes Element fällt in Salzsäure */
-  if (!lastline && Feld[x][y+1]==EL_SALZSAEURE)
+  if (belt_dir != MV_NO_MOVING)
   {
-    Blurb(x,y);
-    return;
-  }
+    DrawLevelElementAnimation(x, y, element);
 
-  /* Auftreffendes Element ist Bombe */
-  if (element==EL_BOMBE && (lastline || object_hit))
-  {
-    Bang(x,y);
-    return;
+    if (!(FrameCounter % 2))
+      PlaySoundLevelAction(x, y, ACTION_ACTIVE);
   }
+}
+#endif
 
-  /* Auftreffendes Element ist Säuretropfen */
-  if (element==EL_TROPFEN && (lastline || object_hit))
-  {
-    if (object_hit && PLAYER(x,y+1))
-      KillHero();
-    else
-    {
-      Feld[x][y] = EL_AMOEBING;
-      Store[x][y] = EL_AMOEBE_NASS;
-    }
-    return;
-  }
+static void ChangeElement(int x, int y)
+{
+  int element = Feld[x][y];
 
-  /* Welches Element kriegt was auf die Rübe? */
-  if (!lastline && object_hit)
+  if (MovDelay[x][y] == 0)		/* initialize element change */
   {
-    int smashed = Feld[x][y+1];
+    MovDelay[x][y] = changing_element[element].change_delay + 1;
+    GfxFrame[x][y] = 0;
 
-    if (PLAYER(x,y+1))
-    {
-      KillHero();
-      return;
-    }
-    else if (element==EL_FELSBROCKEN ||
-	     element==EL_EDELSTEIN2 || element==EL_EDELSTEIN3)
-    {
-      if (IS_ENEMY(MovingOrBlocked2Element(x,y+1)))
-      {
-	Bang(x,y+1);
-	return;
-      }
-      else if (!IS_MOVING(x,y+1))
-      {
-	if (smashed==EL_BOMBE)
-	{
-	  Bang(x,y+1);
-	  return;
-	}
-	else if (smashed==EL_KOKOSNUSS)
-	{
-	  Feld[x][y+1] = EL_CRACKINGNUT;
-	  PlaySoundLevel(x,y,SND_KNACK);
-	  RaiseScore(level.score[SC_KOKOSNUSS]);
-	  return;
-	}
-	else if (smashed==EL_DIAMANT)
-	{
-	  Feld[x][y+1] = EL_LEERRAUM;
-	  PlaySoundLevel(x,y,SND_QUIRK);
-	  return;
-	}
-      }
-    }
+    if (changing_element[element].pre_change_function)
+      changing_element[element].pre_change_function(x, y);
   }
 
-  /* Kein Geräusch beim Durchqueren des Siebes */
-  if (!lastline && (Feld[x][y+1]==EL_SIEB_LEER || Feld[x][y+1]==EL_SIEB2_LEER))
-    return;
+  MovDelay[x][y]--;
 
-  /* Geräusch beim Auftreffen */
-  if (lastline || object_hit)
+  if (MovDelay[x][y] != 0)		/* continue element change */
   {
-    int sound;
+    if (IS_ANIMATED(el2img(element)))
+      DrawLevelElementAnimation(x, y, element);
 
-    switch(element)
-    {
-      case EL_EDELSTEIN:
-      case EL_EDELSTEIN2:
-      case EL_EDELSTEIN3:
-      case EL_DIAMANT:
-        sound = SND_PLING;
-	break;
-      case EL_KOKOSNUSS:
-	sound = SND_KLUMPF;
-	break;
-      case EL_FELSBROCKEN:
-	sound = SND_KLOPF;
-	break;
-      case EL_SCHLUESSEL:
-      case EL_SCHLUESSEL1:
-      case EL_SCHLUESSEL2:
-      case EL_SCHLUESSEL3:
-      case EL_SCHLUESSEL4:
-	sound = SND_KINK;
-	break;
-      case EL_ZEIT_VOLL:
-      case EL_ZEIT_LEER:
-	sound = SND_DENG;
-	break;
-      default:
-	sound = -1;
-        break;
-    }
+    if (changing_element[element].change_function)
+      changing_element[element].change_function(x, y);
+  }
+  else					/* finish element change */
+  {
+    Feld[x][y] = changing_element[element].next_element;
+    GfxFrame[x][y] = 0;
 
-    if (sound>=0)
-      PlaySoundLevel(x,y,sound);
+    DrawLevelField(x, y);
+
+    if (changing_element[element].post_change_function)
+      changing_element[element].post_change_function(x, y);
   }
 }
 
-void TurnRound(int x, int y)
+static void PlayerActions(struct PlayerInfo *player, byte player_action)
 {
-  int element = Feld[x][y];
-  int direction = MovDir[x][y];
+  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;
+  int up	= player_action & JOY_UP;
+  int down	= player_action & JOY_DOWN;
+  int button1	= player_action & JOY_BUTTON_1;
+  int button2	= player_action & JOY_BUTTON_2;
+  int dx	= (left ? -1	: right ? 1	: 0);
+  int dy	= (up   ? -1	: down  ? 1	: 0);
+
+  stored_player_action[player->index_nr] = 0;
+  num_stored_actions++;
+
+  if (!player->active || tape.pausing)
+    return;
 
-  if (element==EL_KAEFER)
+  if (player_action)
   {
-    TestIfBadThingHitsOtherBadThing(x,y);
+#if 0
+    save_tape_entry = TRUE;
+#endif
+    player->frame_reset_delay = 0;
 
-    if (MovDir[x][y]==MV_LEFT)
-    {
-      if (IN_LEV_FIELD(x,y-1) && IS_FREE(x,y-1))
-	MovDir[x][y]=MV_UP;
-      else if (!IN_LEV_FIELD(x-1,y) || !IS_FREE(x-1,y))
-	MovDir[x][y]=MV_DOWN;
-    }
-    else if (MovDir[x][y]==MV_RIGHT)
+    if (button1)
+      snapped = SnapField(player, dx, dy);
+    else
     {
-      if (IN_LEV_FIELD(x,y+1) && IS_FREE(x,y+1))
-	MovDir[x][y]=MV_DOWN;
-      else if (!IN_LEV_FIELD(x+1,y) || !IS_FREE(x+1,y))
-	MovDir[x][y]=MV_UP;
+      if (button2)
+	bombed = PlaceBomb(player);
+      moved = MoveFigure(player, dx, dy);
     }
-    else if (MovDir[x][y]==MV_UP)
+
+    if (tape.single_step && tape.recording && !tape.pausing)
     {
-      if (IN_LEV_FIELD(x+1,y) && IS_FREE(x+1,y))
-	MovDir[x][y]=MV_RIGHT;
-      else if (!IN_LEV_FIELD(x,y-1) || !IS_FREE(x,y-1))
-	MovDir[x][y]=MV_LEFT;
+      if (button1 || (bombed && !moved))
+      {
+	TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
+	SnapField(player, 0, 0);		/* stop snapping */
+      }
     }
-    else if (MovDir[x][y]==MV_DOWN)
+
+#if 0
+    if (tape.recording && (moved || snapped || bombed))
     {
-      if (IN_LEV_FIELD(x-1,y) && IS_FREE(x-1,y))
-	MovDir[x][y]=MV_LEFT;
-      else if (!IN_LEV_FIELD(x,y+1) || !IS_FREE(x,y+1))
-	MovDir[x][y]=MV_RIGHT;
-    }
+      if (bombed && !moved)
+	player_action &= JOY_BUTTON;
 
-    if (direction!=MovDir[x][y])
-      MovDelay[x][y]=5;
+      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 if (element==EL_FLIEGER)
+  else
   {
-    TestIfBadThingHitsOtherBadThing(x,y);
+    /* no actions for this player (no input at player's configured device) */
 
-    if (MovDir[x][y]==MV_LEFT)
-    {
-      if (IN_LEV_FIELD(x,y+1) && IS_FREE(x,y+1))
-	MovDir[x][y]=MV_DOWN;
-      else if (!IN_LEV_FIELD(x-1,y) || !IS_FREE(x-1,y))
-	MovDir[x][y]=MV_UP;
-    }
-    else if (MovDir[x][y]==MV_RIGHT)
-    {
-      if (IN_LEV_FIELD(x,y-1) && IS_FREE(x,y-1))
-	MovDir[x][y]=MV_UP;
-      else if (!IN_LEV_FIELD(x+1,y) || !IS_FREE(x+1,y))
-	MovDir[x][y]=MV_DOWN;
-    }
-    else if (MovDir[x][y]==MV_UP)
-    {
-      if (IN_LEV_FIELD(x-1,y) && IS_FREE(x-1,y))
-	MovDir[x][y]=MV_LEFT;
-      else if (!IN_LEV_FIELD(x,y-1) || !IS_FREE(x,y-1))
-	MovDir[x][y]=MV_RIGHT;
-    }
-    else if (MovDir[x][y]==MV_DOWN)
-    {
-      if (IN_LEV_FIELD(x+1,y) && IS_FREE(x+1,y))
-	MovDir[x][y]=MV_RIGHT;
-      else if (!IN_LEV_FIELD(x,y+1) || !IS_FREE(x,y+1))
-	MovDir[x][y]=MV_LEFT;
-    }
+    DigField(player, 0, 0, 0, 0, DF_NO_PUSH);
+    SnapField(player, 0, 0);
+    CheckGravityMovement(player);
 
-    if (direction!=MovDir[x][y])
-      MovDelay[x][y]=5;
+#if 1
+    if (player->MovPos == 0)	/* needed for tape.playing */
+      player->is_moving = FALSE;
+#endif
+#if 0
+    if (player->MovPos == 0)	/* needed for tape.playing */
+      player->last_move_dir = MV_NO_MOVING;
+
+    /* !!! CHECK THIS AGAIN !!!
+       (Seems to be needed for some EL_ROBOT stuff, but breaks
+       tapes when walking through pipes!)
+    */
+
+    /* it seems that "player->last_move_dir" is misused as some sort of
+       "player->is_just_moving_in_this_moment", which is needed for the
+       robot stuff (robots don't kill players when they are moving)
+    */
+#endif 
+
+    /* if the player does not move for some time, reset animation to start */
+    if (++player->frame_reset_delay > player->move_delay_value)
+      player->Frame = 0;
   }
-  else if (element==EL_MAMPFER)
-  {
-    if (MovDir[x][y]==MV_LEFT || MovDir[x][y]==MV_RIGHT)
-    {
-      MovDir[x][y]=(MovDir[x][y]==MV_LEFT ? MV_RIGHT : MV_LEFT);
-      if (IN_LEV_FIELD(x,y-1) &&
-	  (IS_FREE(x,y-1) || Feld[x][y-1]==EL_DIAMANT) &&
-	  RND(2))
-	MovDir[x][y]=MV_UP;
-      if (IN_LEV_FIELD(x,y+1) &&
-	  (IS_FREE(x,y+1) || Feld[x][y+1]==EL_DIAMANT) &&
-	  RND(2))
-	MovDir[x][y]=MV_DOWN;
-    }
-    else if (MovDir[x][y]==MV_UP || MovDir[x][y]==MV_DOWN)
-    {
-      MovDir[x][y]=(MovDir[x][y]==MV_UP ? MV_DOWN : MV_UP);
-      if (IN_LEV_FIELD(x-1,y) &&
-	  (IS_FREE(x-1,y) || Feld[x-1][y]==EL_DIAMANT) &&
-	  RND(2))
-	MovDir[x][y]=MV_LEFT;
-      if (IN_LEV_FIELD(x+1,y) &&
-	  (IS_FREE(x+1,y) || Feld[x+1][y]==EL_DIAMANT) &&
-	  RND(2))
-	MovDir[x][y]=MV_RIGHT;
-    }
 
-    MovDelay[x][y]=8+8*RND(3);
+#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 (element==EL_MAMPFER2)
+#else
+  if (tape.recording && num_stored_actions >= MAX_PLAYERS)
   {
-    if (MovDir[x][y]==MV_LEFT || MovDir[x][y]==MV_RIGHT)
-    {
-      MovDir[x][y]=(MovDir[x][y]==MV_LEFT ? MV_RIGHT : MV_LEFT);
-      if (IN_LEV_FIELD(x,y-1) &&
-	  (IS_FREE(x,y-1) || IS_MAMPF2(Feld[x][y-1])) && RND(2))
-	MovDir[x][y]=MV_UP;
-      if (IN_LEV_FIELD(x,y+1) &&
-	  (IS_FREE(x,y+1) || IS_MAMPF2(Feld[x][y+1])) && RND(2))
-	MovDir[x][y]=MV_DOWN;
-    }
-    else if (MovDir[x][y]==MV_UP || MovDir[x][y]==MV_DOWN)
-    {
-      MovDir[x][y]=(MovDir[x][y]==MV_UP ? MV_DOWN : MV_UP);
-      if (IN_LEV_FIELD(x-1,y) &&
-	  (IS_FREE(x-1,y) || IS_MAMPF2(Feld[x-1][y])) && RND(2))
-	MovDir[x][y]=MV_LEFT;
-      if (IN_LEV_FIELD(x+1,y) &&
-	  (IS_FREE(x+1,y) || IS_MAMPF2(Feld[x+1][y])) && RND(2))
-	MovDir[x][y]=MV_RIGHT;
-    }
-
-    MovDelay[x][y]=8+8*RND(3);
+    TapeRecordAction(stored_player_action);
+    num_stored_actions = 0;
   }
-  else if (element==EL_PACMAN)
+#endif
+
+#if 0
+  if (tape.playing && !tape.pausing && !player_action &&
+      tape.counter < tape.length)
   {
-    if (MovDir[x][y]==MV_LEFT || MovDir[x][y]==MV_RIGHT)
+    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))
     {
-      MovDir[x][y]=(MovDir[x][y]==MV_LEFT ? MV_RIGHT : MV_LEFT);
-      if (IN_LEV_FIELD(x,y-1) &&
-	  (IS_FREE(x,y-1) || IS_AMOEBOID(Feld[x][y-1])) &&
-	  RND(2))
-	MovDir[x][y]=MV_UP;
-      if (IN_LEV_FIELD(x,y+1) &&
-	  (IS_FREE(x,y+1) || IS_AMOEBOID(Feld[x][y+1])) &&
-	  RND(2))
-	MovDir[x][y]=MV_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;
+	}
+      }
     }
-    else if (MovDir[x][y]==MV_UP || MovDir[x][y]==MV_DOWN)
+  }
+#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, graphic;
+  byte *recorded_player_action;
+  byte summarized_player_action = 0;
+
+  if (game_status != PLAYING)
+    return;
+
+  action_delay_value =
+    (tape.playing && tape.fast_forward ? FfwdFrameDelay : GameFrameDelay);
+
+  if (tape.playing && tape.index_search && !tape.pausing)
+    action_delay_value = 0;
+
+  /* ---------- main game synchronization point ---------- */
+
+  WaitUntilDelayReached(&action_delay, action_delay_value);
+
+  if (network_playing && !network_player_action_received)
+  {
+    /*
+#ifdef DEBUG
+    printf("DEBUG: try to get network player actions in time\n");
+#endif
+    */
+
+#if defined(PLATFORM_UNIX)
+    /* last chance to get network player actions without main loop delay */
+    HandleNetworking();
+#endif
+
+    if (game_status != PLAYING)
+      return;
+
+    if (!network_player_action_received)
     {
-      MovDir[x][y]=(MovDir[x][y]==MV_UP ? MV_DOWN : MV_UP);
-      if (IN_LEV_FIELD(x-1,y) &&
-	  (IS_FREE(x-1,y) || IS_AMOEBOID(Feld[x-1][y])) &&
-	  RND(2))
-	MovDir[x][y]=MV_LEFT;
-      if (IN_LEV_FIELD(x+1,y) &&
-	  (IS_FREE(x+1,y) || IS_AMOEBOID(Feld[x+1][y])) &&
-	  RND(2))
-	MovDir[x][y]=MV_RIGHT;
+      /*
+#ifdef DEBUG
+      printf("DEBUG: failed to get network player actions in time\n");
+#endif
+      */
+      return;
     }
+  }
+
+  if (tape.pausing)
+    return;
+
+  recorded_player_action = (tape.playing ? TapePlayAction() : NULL);
+
+  for (i=0; i<MAX_PLAYERS; i++)
+  {
+    summarized_player_action |= stored_player[i].action;
 
-    MovDelay[x][y]=3+RND(20);
+    if (!network_playing)
+      stored_player[i].effective_action = stored_player[i].action;
   }
-  else if (element==EL_ZOMBIE)
+
+#if defined(PLATFORM_UNIX)
+  if (network_playing)
+    SendToServer_MovePlayer(summarized_player_action);
+#endif
+
+  if (!options.network && !setup.team_mode)
+    local_player->effective_action = summarized_player_action;
+
+  for (i=0; i<MAX_PLAYERS; i++)
   {
-    int attr_x = JX, attr_y = JY;
+    int actual_player_action = stored_player[i].effective_action;
 
-    if (ZX>=0 && ZY>=0)
-    {
-      attr_x = ZX;
-      attr_y = ZY;
-    }
+    if (stored_player[i].programmed_action)
+      actual_player_action = stored_player[i].programmed_action;
 
-    MovDir[x][y]=MV_NO_MOVING;
-    if (attr_x<x)
-      MovDir[x][y]|=MV_LEFT;
-    else if (attr_x>x)
-      MovDir[x][y]|=MV_RIGHT;
-    if (attr_y<y)
-      MovDir[x][y]|=MV_UP;
-    else if (attr_y>y)
-      MovDir[x][y]|=MV_DOWN;
-    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 (recorded_player_action)
+      actual_player_action = recorded_player_action[i];
 
-    MovDelay[x][y] = 8+8*RND(2);
+    PlayerActions(&stored_player[i], actual_player_action);
+    ScrollFigure(&stored_player[i], SCROLL_GO_ON);
   }
-}
 
-void StartMoving(int x, int y)
-{
-  int element = Feld[x][y];
+  network_player_action_received = FALSE;
+
+  ScrollScreen(NULL, SCROLL_GO_ON);
+
 
-  if (Stop[x][y])
-    return;
 
-  if (CAN_FALL(element) && y<lev_fieldy-1)
+#ifdef DEBUG
+#if 0
+  if (TimeFrames == 0 && local_player->active)
   {
-    if (element==EL_MORAST_VOLL)
-    {
-      if (IS_FREE(x,y+1))
-      {
-	InitMovingField(x,y,MV_DOWN);
-	Feld[x][y] = EL_FELSBROCKEN;
-	Store[x][y] = EL_MORAST_LEER;
-      }
-      else if (Feld[x][y+1]==EL_MORAST_LEER)
-      {
-	CheckMoving = TRUE;
+    extern unsigned int last_RND();
 
-	if (!MovDelay[x][y])
-	  MovDelay[x][y] = 16;
+    printf("DEBUG: %03d last RND was %d \t [state checksum is %d]\n",
+	   TimePlayed, last_RND(), getStateCheckSum(TimePlayed));
+  }
+#endif
+#endif
 
-	if (MovDelay[x][y])
-	{
-	  MovDelay[x][y]--;
-	  if (MovDelay[x][y])
-	    return;
-	}
+#ifdef DEBUG
+#if 0
+  if (GameFrameDelay >= 500)
+    printf("FrameCounter == %d\n", FrameCounter);
+#endif
+#endif
 
-	Feld[x][y] = EL_MORAST_LEER;
-	Feld[x][y+1] = EL_MORAST_VOLL;
-      }
-    }
-    else if (element==EL_FELSBROCKEN && Feld[x][y+1]==EL_MORAST_LEER)
-    {
-      InitMovingField(x,y,MV_DOWN);
-      Store[x][y] = EL_MORAST_VOLL;
-    }
-    else if (element==EL_SIEB_VOLL)
-    {
-      if (IS_FREE(x,y+1))
-      {
-	InitMovingField(x,y,MV_DOWN);
-	Feld[x][y] = EL_CHANGED(Store2[x][y]);
-	Store[x][y] = EL_SIEB_LEER;
-      }
-    }
-    else if (element==EL_SIEB2_VOLL)
-    {
-      if (IS_FREE(x,y+1))
-      {
-	InitMovingField(x,y,MV_DOWN);
-	Feld[x][y] = EL_CHANGED2(Store2[x][y]);
-	Store[x][y] = EL_SIEB2_LEER;
-      }
-    }
-    else if (CAN_CHANGE(element) &&
-	     (Feld[x][y+1]==EL_SIEB_LEER || Feld[x][y+1]==EL_SIEB2_LEER))
-    {
-      InitMovingField(x,y,MV_DOWN);
-      Store[x][y] =
-	(Feld[x][y+1]==EL_SIEB_LEER ? EL_SIEB_VOLL : EL_SIEB2_VOLL);
-      Store2[x][y+1] = element;
-      SiebAktiv = 330;
-    }
-    else if (CAN_SMASH(element) && Feld[x][y+1]==EL_SALZSAEURE)
-    {
-      Blurb(x,y);
-      InitMovingField(x,y,MV_DOWN);
-      Store[x][y] = EL_SALZSAEURE;
-    }
-    else if (CAN_SMASH(element) && Feld[x][y+1]==EL_BLOCKED && JustHit[x][y])
-    {
-      Impact(x,y);
-    }
-    else if (IS_FREE(x,y+1))
-    {
-      InitMovingField(x,y,MV_DOWN);
-    }
-    else if (element==EL_TROPFEN)
-    {
-      Feld[x][y] = EL_AMOEBING;
-      Store[x][y] = EL_AMOEBE_NASS;
-    }
-    else if (IS_SLIPPERY(Feld[x][y+1]) && !Store[x][y+1])
+  FrameCounter++;
+  TimeFrames++;
+
+  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))
     {
-      int left  = (x>0 && IS_FREE(x-1,y) &&
-		   (IS_FREE(x-1,y+1) || Feld[x-1][y+1]==EL_SALZSAEURE));
-      int right = (x<lev_fieldx-1 && IS_FREE(x+1,y) &&
-		   (IS_FREE(x+1,y+1) || Feld[x+1][y+1]==EL_SALZSAEURE));
+      int oldx, oldy;
 
-      if (left || right)
+      Blocked2Moving(x, y, &oldx, &oldy);
+      if (!IS_MOVING(oldx, oldy))
       {
-	if (left && right)
-	  left = !(right=RND(2));
-	InitMovingField(x,y,left ? MV_LEFT : MV_RIGHT);
+	printf("GameActions(): (BLOCKED => MOVING) context corrupted!\n");
+	printf("GameActions(): BLOCKED: x = %d, y = %d\n", x, y);
+	printf("GameActions(): !MOVING: oldx = %d, oldy = %d\n", oldx, oldy);
+	printf("GameActions(): This should never happen!\n");
       }
     }
+#endif
   }
-  else if (CAN_MOVE(element))
-  {
-    int newx,newy;
 
-    CheckMoving = TRUE;
+  for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+  {
+    element = Feld[x][y];
+    graphic = el2img(element);
 
-    if (!MovDelay[x][y])	/* neuer Schritt / noch nicht gewartet */
+    if (IS_INACTIVE(element))
     {
-      if (element==EL_ZOMBIE || element==EL_KAEFER || element==EL_FLIEGER)
-      {
-	TurnRound(x,y);
-	if (MovDelay[x][y] && (element==EL_KAEFER || element==EL_FLIEGER))
-	  DrawLevelField(x,y);
-      }
+
+#if 1
+      if (IS_ANIMATED(graphic))
+	DrawLevelGraphicAnimation(x, y, graphic);
+#endif
+
+      continue;
     }
 
-    if (MovDelay[x][y])		/* neuer Schritt / in Wartezustand */
+    if (!IS_MOVING(x, y) && (CAN_FALL(element) || CAN_MOVE(element)))
     {
-      MovDelay[x][y]--;
-
-      if (element==EL_ZOMBIE || element==EL_MAMPFER || element==EL_MAMPFER2)
-      {
-	int phase = MovDelay[x][y] % 8;
+      StartMoving(x, y);
+
+#if 1
+#if 0
+      if (Feld[x][y] == EL_EMERALD &&
+	  IS_ANIMATED(graphic) &&
+	  !IS_MOVING(x, y))
+	DrawLevelGraphicAnimation(x, y, graphic);
+#else
+      if (IS_ANIMATED(graphic) &&
+	  !IS_MOVING(x, y))
+	DrawLevelGraphicAnimation(x, y, graphic);
+#endif
+#endif
 
-	if (phase>3)
-	  phase = 7-phase;
+      if (IS_GEM(element) || element == EL_SP_INFOTRON)
+	EdelsteinFunkeln(x, y);
+    }
 
-	if (IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-	  DrawGraphic(SCROLLX(x),SCROLLY(y),
-		      el2gfx(element)+phase);
+#if 1
+    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))
+      DrawLevelGraphicAnimation(x, y, graphic);
+#endif
 
-	if ((element==EL_MAMPFER || element==EL_MAMPFER2)
-	    && MovDelay[x][y]%4==3)
-	  PlaySoundLevel(x,y,SND_NJAM);
-      }
+    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, ExplodePhase[x][y], EX_NORMAL);
+#endif
+    else if (element == EL_AMOEBA_CREATING)
+      AmoebeWaechst(x, y);
+    else if (element == EL_AMOEBA_SHRINKING)
+      AmoebaDisappearing(x, y);
+
+#if !USE_NEW_AMOEBA_CODE
+    else if (IS_AMOEBALIVE(element))
+      AmoebeAbleger(x, y);
+#endif
 
-      if (MovDelay[x][y])
-	return;
-    }
+    else if (element == EL_GAMEOFLIFE || element == EL_BIOMAZE)
+      Life(x, y);
+#if 0
+    else if (element == EL_ROBOT_WHEEL_ACTIVE)
+      RobotWheel(x, y);
+    else if (element == EL_TIMEGATE_SWITCH_ACTIVE)
+      TimegateWheel(x, y);
+#endif
+    else if (element == EL_ACID_SPLASH_LEFT ||
+	     element == EL_ACID_SPLASH_RIGHT)
+      Blurb(x, y);
+#if 0
+    else if (element == EL_NUT_CRACKING)
+      NussKnacken(x, y);
+    else if (element == EL_PEARL_BREAKING)
+      BreakingPearl(x, y);
+#endif
+    else if (element == EL_EXIT_CLOSED)
+      CheckExit(x, y);
+    else if (element == EL_SP_EXIT_CLOSED)
+      CheckExitSP(x, y);
+#if 0
+    else if (element == EL_EXIT_OPENING)
+      AusgangstuerOeffnen(x, y);
+#endif
+    else if (element == EL_WALL_GROWING_ACTIVE)
+      MauerWaechst(x, y);
+    else if (element == EL_WALL_GROWING ||
+	     element == EL_WALL_GROWING_X ||
+	     element == EL_WALL_GROWING_Y ||
+	     element == EL_WALL_GROWING_XY)
+      MauerAbleger(x, y);
+    else if (element == EL_FLAMES)
+      CheckForDragon(x, y);
+#if 0
+    else if (element == EL_SP_BUGGY_BASE ||
+	     element == EL_SP_BUGGY_BASE_ACTIVATING ||
+	     element == EL_SP_BUGGY_BASE_ACTIVE)
+      CheckBuggyBase(x, y);
+    else if (element == EL_TRAP ||
+	     element == EL_TRAP_ACTIVE)
+      CheckTrap(x, y);
+    else if (IS_BELT_ACTIVE(element))
+      DrawBeltAnimation(x, y, element);
+    else if (element == EL_SWITCHGATE_OPENING)
+      OpenSwitchgate(x, y);
+    else if (element == EL_SWITCHGATE_CLOSING)
+      CloseSwitchgate(x, y);
+    else if (element == EL_TIMEGATE_OPENING)
+      OpenTimegate(x, y);
+    else if (element == EL_TIMEGATE_CLOSING)
+      CloseTimegate(x, y);
+#endif
 
-    if (element==EL_KAEFER)
-    {
-      PlaySoundLevel(x,y,SND_KLAPPER);
-    }
-    else if (element==EL_FLIEGER)
-    {
-      PlaySoundLevel(x,y,SND_ROEHR);
-    }
+    else if (IS_AUTO_CHANGING(element))
+      ChangeElement(x, y);
 
-    /* neuer Schritt / Wartezustand beendet */
+#if 1
+    else if (element == EL_EXPLOSION)
+      ;	/* drawing of correct explosion animation is handled separately */
+    else if (IS_ANIMATED(graphic))
+      DrawLevelGraphicAnimation(x, y, graphic);
+#endif
 
-    Moving2Blocked(x,y,&newx,&newy);	/* wohin soll's gehen? */
+    if (IS_BELT_ACTIVE(element))
+      PlaySoundLevelAction(x, y, ACTION_ACTIVE);
 
-    if (PLAYER(newx,newy))		/* Spieler erwischt */
+    if (game.magic_wall_active)
     {
-      MovDir[x][y] = 0;
-      KillHero();
-      return;
-    }
-    else if (element==EL_MAMPFER && IN_LEV_FIELD(newx,newy) &&
-	     Feld[newx][newy]==EL_DIAMANT)
-    {
-      if (IS_MOVING(newx,newy))
-	RemoveMovingField(newx,newy);
-      else
+      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)
       {
-	Feld[newx][newy] = EL_LEERRAUM;
-	DrawLevelField(newx,newy);
+	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))
+      {
+	sieb_x = x;
+	sieb_y = y;
       }
     }
-    else if (element==EL_MAMPFER2 && IN_LEV_FIELD(newx,newy) &&
-	     IS_MAMPF2(Feld[newx][newy]))
+  }
+
+#if USE_NEW_AMOEBA_CODE
+  /* new experimental amoeba growth stuff */
+#if 1
+  if (!(FrameCounter % 8))
+#endif
+  {
+    static unsigned long random = 1684108901;
+
+    for (i = 0; i < level.amoeba_speed * 28 / 8; i++)
     {
-      if (AmoebaNr[newx][newy] && Feld[newx][newy]==EL_AMOEBE_VOLL)
-	AmoebaCnt[AmoebaNr[newx][newy]]--;
+#if 0
+      x = (random >> 10) % lev_fieldx;
+      y = (random >> 20) % lev_fieldy;
+#else
+      x = RND(lev_fieldx);
+      y = RND(lev_fieldy);
+#endif
+      element = Feld[x][y];
 
-      if (IS_MOVING(newx,newy))
-	RemoveMovingField(newx,newy);
-      else
+      if (!IS_PLAYER(x,y) &&
+	  (element == EL_EMPTY ||
+	   element == EL_SAND ||
+	   element == EL_QUICKSAND_EMPTY ||
+	   element == EL_ACID_SPLASH_LEFT ||
+	   element == EL_ACID_SPLASH_RIGHT))
       {
-	Feld[newx][newy] = EL_LEERRAUM;
-	DrawLevelField(newx,newy);
+	if ((IN_LEV_FIELD(x, y-1) && Feld[x][y-1] == EL_AMOEBA_WET) ||
+	    (IN_LEV_FIELD(x-1, y) && Feld[x-1][y] == EL_AMOEBA_WET) ||
+	    (IN_LEV_FIELD(x+1, y) && Feld[x+1][y] == EL_AMOEBA_WET) ||
+	    (IN_LEV_FIELD(x, y+1) && Feld[x][y+1] == EL_AMOEBA_WET))
+	  Feld[x][y] = EL_AMOEBA_DROP;
       }
+
+      random = random * 129 + 1;
     }
-    else if (element==EL_PACMAN && IN_LEV_FIELD(newx,newy) &&
-	     IS_AMOEBOID(Feld[newx][newy]))
+  }
+#endif
+
+#if 0
+  if (game.explosions_delayed)
+#endif
+  {
+    game.explosions_delayed = FALSE;
+
+    for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
     {
-      if (AmoebaNr[newx][newy] && Feld[newx][newy]==EL_AMOEBE_VOLL)
-	AmoebaCnt[AmoebaNr[newx][newy]]--;
+      element = Feld[x][y];
 
-      Feld[newx][newy] = EL_LEERRAUM;
-      DrawLevelField(newx,newy);
+      if (ExplodeField[x][y])
+	Explode(x, y, EX_PHASE_START, ExplodeField[x][y]);
+      else if (element == EL_EXPLOSION)
+	Explode(x, y, ExplodePhase[x][y], EX_NORMAL);
+
+      ExplodeField[x][y] = EX_NO_EXPLOSION;
     }
-    else if (element==EL_ZOMBIE && IN_LEV_FIELD(newx,newy) &&
-	     MovDir[x][y]==MV_DOWN && Feld[newx][newy]==EL_SALZSAEURE)
+
+    game.explosions_delayed = TRUE;
+  }
+
+  if (game.magic_wall_active)
+  {
+    if (!(game.magic_wall_time_left % 4))
     {
-      Blurb(x,y);
-      Store[x][y] = EL_SALZSAEURE;
-    }
-    else if (!IN_LEV_FIELD(newx,newy) || !IS_FREE(newx,newy))
-    {					/* gegen Wand gelaufen */
-      TurnRound(x,y);
-      DrawLevelField(x,y);
-      return;
+      int element = Feld[sieb_x][sieb_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);
+      else
+	PlaySoundLevel(sieb_x, sieb_y, SND_MAGIC_WALL_ACTIVE);
     }
 
-    InitMovingField(x,y,MovDir[x][y]);
+    if (game.magic_wall_time_left > 0)
+    {
+      game.magic_wall_time_left--;
+      if (!game.magic_wall_time_left)
+      {
+	for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+	{
+	  element = Feld[x][y];
+
+	  if (element == EL_MAGIC_WALL_ACTIVE ||
+	      element == EL_MAGIC_WALL_FULL)
+	  {
+	    Feld[x][y] = EL_MAGIC_WALL_DEAD;
+	    DrawLevelField(x, y);
+	  }
+	  else if (element == EL_BD_MAGIC_WALL_ACTIVE ||
+		   element == EL_BD_MAGIC_WALL_FULL)
+	  {
+	    Feld[x][y] = EL_BD_MAGIC_WALL_DEAD;
+	    DrawLevelField(x, y);
+	  }
+	}
+
+	game.magic_wall_active = FALSE;
+      }
+    }
   }
 
-  if (MovDir[x][y])
-    ContinueMoving(x,y);
-}
+  if (game.light_time_left > 0)
+  {
+    game.light_time_left--;
 
-void ContinueMoving(int x, int y)
-{
-  int element = Feld[x][y];
-  int direction = MovDir[x][y];
-  int dx = (direction==MV_LEFT ? -1 : direction==MV_RIGHT ? +1 : 0);
-  int dy = (direction==MV_UP   ? -1 : direction==MV_DOWN  ? +1 : 0);
-  int horiz_move = (dx!=0);
-  int newx = x + dx, newy = y + dy;
-  int step = (horiz_move ? dx : dy)*TILEX/4;
+    if (game.light_time_left == 0)
+      RedrawAllLightSwitchesAndInvisibleElements();
+  }
 
-  if (CAN_FALL(element) && horiz_move)
-    step*=2;
-  else if (element==EL_TROPFEN)
-    step/=2;
-  else if (Store[x][y]==EL_MORAST_VOLL || Store[x][y]==EL_MORAST_LEER)
-    step/=4;
+  if (game.timegate_time_left > 0)
+  {
+    game.timegate_time_left--;
 
-  MovPos[x][y] += step;
+    if (game.timegate_time_left == 0)
+      CloseAllOpenTimegates();
+  }
 
-  if (ABS(MovPos[x][y])>=TILEX)		/* Zielfeld erreicht */
+  for (i=0; i<MAX_PLAYERS; i++)
   {
-    Feld[x][y] = EL_LEERRAUM;
-    Feld[newx][newy] = element;
+    struct PlayerInfo *player = &stored_player[i];
 
-    if (Store[x][y]==EL_MORAST_VOLL)
-    {
-      Store[x][y] = 0;
-      Feld[newx][newy] = EL_MORAST_VOLL;
-      element = EL_MORAST_VOLL;
-    }
-    else if (Store[x][y]==EL_MORAST_LEER)
-    {
-      Store[x][y] = 0;
-      Feld[x][y] = EL_MORAST_LEER;
-    }
-    else if (Store[x][y]==EL_SIEB_VOLL)
-    {
-      Store[x][y] = 0;
-      Feld[newx][newy] = EL_SIEB_VOLL;
-      element = EL_SIEB_VOLL;
-    }
-    else if (Store[x][y]==EL_SIEB_LEER)
+    if (SHIELD_ON(player))
     {
-      Store[x][y] = Store2[x][y] = 0;
-      Feld[x][y] = EL_SIEB_LEER;
+      if (player->shield_deadly_time_left)
+	PlaySoundLevel(player->jx, player->jy, SND_SHIELD_DEADLY_ACTIVE);
+      else if (player->shield_normal_time_left)
+	PlaySoundLevel(player->jx, player->jy, SND_SHIELD_NORMAL_ACTIVE);
     }
-    else if (Store[x][y]==EL_SIEB2_VOLL)
-    {
-      Store[x][y] = 0;
-      Feld[newx][newy] = EL_SIEB2_VOLL;
-      element = EL_SIEB2_VOLL;
-    }
-    else if (Store[x][y]==EL_SIEB2_LEER)
-    {
-      Store[x][y] = Store2[x][y] = 0;
-      Feld[x][y] = EL_SIEB2_LEER;
-    }
-    else if (Store[x][y]==EL_SALZSAEURE)
+  }
+
+  if (TimeFrames >= (1000 / GameFrameDelay))
+  {
+    TimeFrames = 0;
+    TimePlayed++;
+
+    for (i=0; i<MAX_PLAYERS; i++)
     {
-      Store[x][y] = 0;
-      Feld[newx][newy] = EL_SALZSAEURE;
-      element = EL_SALZSAEURE;
+      struct PlayerInfo *player = &stored_player[i];
+
+      if (SHIELD_ON(player))
+      {
+	player->shield_normal_time_left--;
+
+	if (player->shield_deadly_time_left > 0)
+	  player->shield_deadly_time_left--;
+      }
     }
-    else if (Store[x][y]==EL_AMOEBE_NASS)
+
+    if (tape.recording || tape.playing)
+      DrawVideoDisplay(VIDEO_STATE_TIME_ON, TimePlayed);
+
+    if (TimeLeft > 0)
     {
-      Store[x][y] = 0;
-      Feld[x][y] = EL_AMOEBE_NASS;
-    }
+      TimeLeft--;
 
-    MovPos[x][y] = MovDir[x][y] = 0;
+      if (TimeLeft <= 10 && setup.time_limit)
+	PlaySoundStereo(SND_GAME_RUNNING_OUT_OF_TIME, SOUND_MAX_RIGHT);
 
-    if (!CAN_MOVE(element))
-      MovDir[newx][newy] = 0;
+      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
 
-    DrawLevelField(x,y);
-    DrawLevelField(newx,newy);
+      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);
+  }
 
-    Stop[newx][newy] = TRUE;
-    JustHit[x][newy] = 3;
-    CheckMoving = TRUE;
+  DrawAllPlayers();
 
-    if (DONT_TOUCH(element))	/* Käfer oder Flieger */
+  if (options.debug)			/* calculate frames per second */
+  {
+    static unsigned long fps_counter = 0;
+    static int fps_frames = 0;
+    unsigned long fps_delay_ms = Counter() - fps_counter;
+
+    fps_frames++;
+
+    if (fps_delay_ms >= 500)	/* calculate fps every 0.5 seconds */
     {
-      TestIfBadThingHitsHero();
-      TestIfBadThingHitsOtherBadThing(newx,newy);
+      global.frames_per_second = 1000 * (float)fps_frames / fps_delay_ms;
+
+      fps_frames = 0;
+      fps_counter = Counter();
     }
 
-    if (CAN_SMASH(element) && direction==MV_DOWN &&
-	(newy==lev_fieldy-1 || !IS_FREE(x,newy+1)))
-      Impact(x,newy);
-  }
-  else				/* noch in Bewegung */
-  {
-    DrawLevelField(x,y);
-    CheckMoving = TRUE;
+    redraw_mask |= REDRAW_FPS;
   }
 }
 
-int AmoebeNachbarNr(int ax, int ay)
+static boolean AllPlayersInSight(struct PlayerInfo *player, int x, int y)
 {
+  int min_x = x, min_y = y, max_x = x, max_y = y;
   int i;
-  int element = Feld[ax][ay];
-  int group_nr = 0;
-  static int xy[4][2] =
-  {
-    0,-1,
-    -1,0,
-    +1,0,
-    0,+1
-  };
 
-  for(i=0;i<4;i++)
+  for (i=0; i<MAX_PLAYERS; i++)
   {
-    int x = ax+xy[i%4][0];
-    int y = ay+xy[i%4][1];
+    int jx = stored_player[i].jx, jy = stored_player[i].jy;
 
-    if (!IN_LEV_FIELD(x,y))
+    if (!stored_player[i].active || &stored_player[i] == player)
       continue;
 
-    if (Feld[x][y]==element && AmoebaNr[x][y]>0)
-      group_nr = AmoebaNr[x][y];
+    min_x = MIN(min_x, jx);
+    min_y = MIN(min_y, jy);
+    max_x = MAX(max_x, jx);
+    max_y = MAX(max_y, jy);
   }
 
-  return(group_nr);
+  return (max_x - min_x < SCR_FIELDX && max_y - min_y < SCR_FIELDY);
 }
 
-void AmoebenVereinigen(int ax, int ay)
+static boolean AllPlayersInVisibleScreen()
 {
-  int i,x,y,xx,yy;
-  int new_group_nr = AmoebaNr[ax][ay];
-  static int xy[4][2] =
-  {
-    0,-1,
-    -1,0,
-    +1,0,
-    0,+1
-  };
-
-  if (!new_group_nr)
-    return;
+  int i;
 
-  for(i=0;i<4;i++)
+  for (i=0; i<MAX_PLAYERS; i++)
   {
-    x = ax+xy[i%4][0];
-    y = ay+xy[i%4][1];
+    int jx = stored_player[i].jx, jy = stored_player[i].jy;
 
-    if (!IN_LEV_FIELD(x,y))
+    if (!stored_player[i].active)
       continue;
 
-    if ((Feld[x][y]==EL_AMOEBE_VOLL || Feld[x][y]==EL_AMOEBE_TOT) &&
-	AmoebaNr[x][y] != new_group_nr)
-    {
-      int old_group_nr = AmoebaNr[x][y];
-
-      AmoebaCnt[new_group_nr] += AmoebaCnt[old_group_nr];
-      AmoebaCnt[old_group_nr] = 0;
-
-      for(yy=0;yy<lev_fieldy;yy++) for(xx=0;xx<lev_fieldx;xx++)
-	if (AmoebaNr[xx][yy]==old_group_nr)
-	  AmoebaNr[xx][yy] = new_group_nr;
-    }
+    if (!IN_VIS_FIELD(SCREENX(jx), SCREENY(jy)))
+      return FALSE;
   }
+
+  return TRUE;
 }
 
-void AmoebeUmwandeln(int ax, int ay)
+void ScrollLevel(int dx, int dy)
 {
-  int i,x,y;
-  int group_nr = AmoebaNr[ax][ay];
-  static int xy[4][2] =
-  {
-    0,-1,
-    -1,0,
-    +1,0,
-    0,+1
-  };
+  int softscroll_offset = (setup.soft_scrolling ? TILEX : 0);
+  int x, y;
 
-  if (Feld[ax][ay]==EL_AMOEBE_TOT)
+  BlitBitmap(drawto_field, drawto_field,
+	     FX + TILEX*(dx == -1) - softscroll_offset,
+	     FY + TILEY*(dy == -1) - softscroll_offset,
+	     SXSIZE - TILEX*(dx!=0) + 2*softscroll_offset,
+	     SYSIZE - TILEY*(dy!=0) + 2*softscroll_offset,
+	     FX + TILEX*(dx == 1) - softscroll_offset,
+	     FY + TILEY*(dy == 1) - softscroll_offset);
+
+  if (dx)
   {
-    for(y=0;y<lev_fieldy;y++) for(x=0;x<lev_fieldx;x++)
-    {
-      if (Feld[x][y]==EL_AMOEBE_TOT && AmoebaNr[x][y]==group_nr)
-      {
-	AmoebaNr[x][y] = 0;
-	Feld[x][y] = EL_AMOEBA2DIAM;
-      }
-    }
-    Bang(ax,ay);
+    x = (dx == 1 ? BX1 : BX2);
+    for (y=BY1; y<=BY2; y++)
+      DrawScreenField(x, y);
   }
-  else
+
+  if (dy)
   {
-    for(i=0;i<4;i++)
-    {
-      x = ax+xy[i%4][0];
-      y = ay+xy[i%4][1];
+    y = (dy == 1 ? BY1 : BY2);
+    for (x=BX1; x<=BX2; x++)
+      DrawScreenField(x, y);
+  }
 
-      if (!IN_LEV_FIELD(x,y))
-	continue;
+  redraw_mask |= REDRAW_FIELD;
+}
 
-      if (Feld[x][y]==EL_AMOEBA2DIAM)
-	Bang(x,y);
-    }
+static void CheckGravityMovement(struct PlayerInfo *player)
+{
+  if (level.gravity && !player->programmed_action)
+  {
+    int move_dir_vertical = player->action & (MV_UP | MV_DOWN);
+    int move_dir_horizontal = player->action & (MV_LEFT | MV_RIGHT);
+    int move_dir =
+      (player->last_move_dir & (MV_LEFT | MV_RIGHT) ?
+       (move_dir_vertical ? move_dir_vertical : move_dir_horizontal) :
+       (move_dir_horizontal ? move_dir_horizontal : move_dir_vertical));
+    int jx = player->jx, jy = player->jy;
+    int dx = (move_dir & MV_LEFT ? -1 : move_dir & MV_RIGHT ? +1 : 0);
+    int dy = (move_dir & MV_UP ? -1 : move_dir & MV_DOWN ? +1 : 0);
+    int new_jx = jx + dx, new_jy = jy + dy;
+    boolean field_under_player_is_free =
+      (IN_LEV_FIELD(jx, jy + 1) && IS_FREE(jx, jy + 1));
+    boolean player_is_moving_to_valid_field =
+      (IN_LEV_FIELD(new_jx, new_jy) &&
+       (Feld[new_jx][new_jy] == EL_SP_BASE ||
+	Feld[new_jx][new_jy] == EL_SAND));
+
+    if (field_under_player_is_free &&
+	!player_is_moving_to_valid_field &&
+	!IS_TUBE(Feld[jx][jy]))
+      player->programmed_action = MV_DOWN;
   }
 }
 
-void AmoebeWaechst(int x, int y)
+boolean MoveFigureOneStep(struct PlayerInfo *player,
+			  int dx, int dy, int real_dx, int real_dy)
 {
-  static long sound_delay = 0;
-  static int sound_delay_value = 0;
+  int jx = player->jx, jy = player->jy;
+  int new_jx = jx+dx, new_jy = jy+dy;
+  int element;
+  int can_move;
 
-  CheckExploding = TRUE;
+  if (!player->active || (!dx && !dy))
+    return MF_NO_ACTION;
 
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-  {
-    MovDelay[x][y] = 4;
+  player->MovDir = (dx < 0 ? MV_LEFT :
+		    dx > 0 ? MV_RIGHT :
+		    dy < 0 ? MV_UP :
+		    dy > 0 ? MV_DOWN :	MV_NO_MOVING);
 
-    if (DelayReached(&sound_delay,sound_delay_value))
-    {
-      PlaySoundLevel(x,y,SND_AMOEBE);
-      sound_delay_value = 30;
-    }
-  }
+  if (!IN_LEV_FIELD(new_jx, new_jy))
+    return MF_NO_ACTION;
 
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
-  {
-    MovDelay[x][y]--;
-    if (MovDelay[x][y] && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-      DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_AMOEBING+3-MovDelay[x][y]);
+  if (!options.network && !AllPlayersInSight(player, new_jx, new_jy))
+    return MF_NO_ACTION;
 
-    if (!MovDelay[x][y])
+#if 0
+  element = MovingOrBlocked2Element(new_jx, new_jy);
+#else
+  element = MovingOrBlocked2ElementIfNotLeaving(new_jx, new_jy);
+#endif
+
+  if (DONT_GO_TO(element))
+  {
+    if (element == EL_ACID && dx == 0 && dy == 1)
     {
-      Feld[x][y] = Store[x][y];
-      Store[x][y] = 0;
-      DrawLevelField(x,y);
+      Blurb(jx, jy);
+      Feld[jx][jy] = EL_PLAYER1;
+      InitMovingField(jx, jy, MV_DOWN);
+      Store[jx][jy] = EL_ACID;
+      ContinueMoving(jx, jy);
+      BuryHero(player);
     }
+    else
+      TestIfHeroRunsIntoBadThing(jx, jy, player->MovDir);
+
+    return MF_MOVING;
   }
+
+  can_move = DigField(player, new_jx, new_jy, real_dx, real_dy, DF_DIG);
+  if (can_move != MF_MOVING)
+    return can_move;
+
+  StorePlayer[jx][jy] = 0;
+  player->last_jx = jx;
+  player->last_jy = jy;
+  jx = player->jx = new_jx;
+  jy = player->jy = new_jy;
+  StorePlayer[jx][jy] = player->element_nr;
+
+  player->MovPos =
+    (dx > 0 || dy > 0 ? -1 : 1) * (TILEX - TILEX / player->move_delay_value);
+
+  ScrollFigure(player, SCROLL_INIT);
+
+  return MF_MOVING;
 }
 
-void AmoebeAbleger(int ax, int ay)
+boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
 {
-  int i;
-  int element = Feld[ax][ay];
-  int newax = ax, neway = ay;
-  static int xy[4][2] =
-  {
-    0,-1,
-    -1,0,
-    +1,0,
-    0,+1
-  };
-
-  CheckExploding = TRUE;
+  int jx = player->jx, jy = player->jy;
+  int old_jx = jx, old_jy = jy;
+  int moved = MF_NO_ACTION;
 
-  if (!level.tempo_amoebe)
-  {
-    Feld[ax][ay] = EL_AMOEBE_TOT;
-    DrawLevelField(ax,ay);
-    return;
-  }
+  if (!player->active || (!dx && !dy))
+    return FALSE;
+
+#if 0
+  if (!FrameReached(&player->move_delay, player->move_delay_value) &&
+      !tape.playing)
+    return FALSE;
+#else
+  if (!FrameReached(&player->move_delay, player->move_delay_value) &&
+      !(tape.playing && tape.file_version < FILE_VERSION_2_0))
+    return FALSE;
+#endif
 
-  if (!MovDelay[ax][ay])	/* neue Amoebe / noch nicht gewartet */
-    MovDelay[ax][ay] = RND(33*20/(1+level.tempo_amoebe));
+  /* remove the last programmed player action */
+  player->programmed_action = 0;
 
-  if (MovDelay[ax][ay])		/* neue Amoebe / in Wartezustand */
+  if (player->MovPos)
   {
-    MovDelay[ax][ay]--;
-    if (MovDelay[ax][ay])
-      return;
-  }
+    /* should only happen if pre-1.2 tape recordings are played */
+    /* this is only for backward compatibility */
 
-  if (element==EL_AMOEBE_NASS)	/* tropfende Amöbe */
-  {
-    int start = RND(4);
-    int x = ax+xy[start][0];
-    int y = ay+xy[start][1];
+    int original_move_delay_value = player->move_delay_value;
 
-    if (!IN_LEV_FIELD(x,y))
-      return;
+#if DEBUG
+    printf("THIS SHOULD ONLY HAPPEN WITH PRE-1.2 LEVEL TAPES. [%ld]\n",
+	   tape.counter);
+#endif
+
+    /* scroll remaining steps with finest movement resolution */
+    player->move_delay_value = MOVE_DELAY_NORMAL_SPEED;
 
-    if (IS_FREE(x,y) ||
-	Feld[x][y]==EL_ERDREICH || Feld[x][y]==EL_MORAST_LEER)
+    while (player->MovPos)
     {
-      newax = x;
-      neway = y;
+      ScrollFigure(player, SCROLL_GO_ON);
+      ScrollScreen(NULL, SCROLL_GO_ON);
+      FrameCounter++;
+      DrawAllPlayers();
+      BackToFront();
     }
 
-    if (newax==ax && neway==ay)
-      return;
+    player->move_delay_value = original_move_delay_value;
   }
-  else				/* normale oder "gefüllte" Amöbe */
+
+  if (player->last_move_dir & (MV_LEFT | MV_RIGHT))
   {
-    int start = RND(4);
-    BOOL waiting_for_player = FALSE;
+    if (!(moved |= MoveFigureOneStep(player, 0, dy, dx, dy)))
+      moved |= MoveFigureOneStep(player, dx, 0, dx, dy);
+  }
+  else
+  {
+    if (!(moved |= MoveFigureOneStep(player, dx, 0, dx, dy)))
+      moved |= MoveFigureOneStep(player, 0, dy, dx, dy);
+  }
+
+  jx = player->jx;
+  jy = player->jy;
+
+  if (moved & MF_MOVING && !ScreenMovPos &&
+      (player == local_player || !options.network))
+  {
+    int old_scroll_x = scroll_x, old_scroll_y = scroll_y;
+    int offset = (setup.scroll_delay ? 3 : 0);
 
-    for(i=0;i<4;i++)
+    if (!IN_VIS_FIELD(SCREENX(jx), SCREENY(jy)))
+    {
+      /* actual player has left the screen -- scroll in that direction */
+      if (jx != old_jx)		/* player has moved horizontally */
+	scroll_x += (jx - old_jx);
+      else			/* player has moved vertically */
+	scroll_y += (jy - old_jy);
+    }
+    else
     {
-      int j = (start+i)%4;
-      int x = ax+xy[j][0];
-      int y = ay+xy[j][1];
+      if (jx != old_jx)		/* player has moved horizontally */
+      {
+ 	if ((player->MovDir == MV_LEFT && scroll_x > jx - MIDPOSX + offset) ||
+	    (player->MovDir == MV_RIGHT && scroll_x < jx - MIDPOSX - offset))
+	  scroll_x = jx-MIDPOSX + (scroll_x < jx-MIDPOSX ? -offset : +offset);
 
-      if (!IN_LEV_FIELD(x,y))
-	continue;
+	/* don't scroll over playfield boundaries */
+	if (scroll_x < SBX_Left || scroll_x > SBX_Right)
+	  scroll_x = (scroll_x < SBX_Left ? SBX_Left : SBX_Right);
 
-      if (IS_FREE(x,y) ||
-	  Feld[x][y]==EL_ERDREICH || Feld[x][y]==EL_MORAST_LEER)
+	/* don't scroll more than one field at a time */
+	scroll_x = old_scroll_x + SIGN(scroll_x - old_scroll_x);
+
+	/* don't scroll against the player's moving direction */
+	if ((player->MovDir == MV_LEFT && scroll_x > old_scroll_x) ||
+	    (player->MovDir == MV_RIGHT && scroll_x < old_scroll_x))
+	  scroll_x = old_scroll_x;
+      }
+      else			/* player has moved vertically */
       {
-	newax = x;
-	neway = y;
-	break;
+	if ((player->MovDir == MV_UP && scroll_y > jy - MIDPOSY + offset) ||
+	    (player->MovDir == MV_DOWN && scroll_y < jy - MIDPOSY - offset))
+	  scroll_y = jy-MIDPOSY + (scroll_y < jy-MIDPOSY ? -offset : +offset);
+
+	/* don't scroll over playfield boundaries */
+	if (scroll_y < SBY_Upper || scroll_y > SBY_Lower)
+	  scroll_y = (scroll_y < SBY_Upper ? SBY_Upper : SBY_Lower);
+
+	/* don't scroll more than one field at a time */
+	scroll_y = old_scroll_y + SIGN(scroll_y - old_scroll_y);
+
+	/* don't scroll against the player's moving direction */
+	if ((player->MovDir == MV_UP && scroll_y > old_scroll_y) ||
+	    (player->MovDir == MV_DOWN && scroll_y < old_scroll_y))
+	  scroll_y = old_scroll_y;
       }
-      else if (PLAYER(x,y))
-	waiting_for_player = TRUE;
     }
 
-    if (newax==ax && neway==ay)
+    if (scroll_x != old_scroll_x || scroll_y != old_scroll_y)
     {
-      if (i==4 && !waiting_for_player)
+      if (!options.network && !AllPlayersInVisibleScreen())
       {
-	Feld[ax][ay] = EL_AMOEBE_TOT;
-	DrawLevelField(ax,ay);
-
-	if (element==EL_AMOEBE_VOLL && --AmoebaCnt[AmoebaNr[ax][ay]]<=0)
-	  AmoebeUmwandeln(ax,ay);
+	scroll_x = old_scroll_x;
+	scroll_y = old_scroll_y;
+      }
+      else
+      {
+	ScrollScreen(player, SCROLL_INIT);
+	ScrollLevel(old_scroll_x - scroll_x, old_scroll_y - scroll_y);
       }
-      return;
-    }
-    else if (element==EL_AMOEBE_VOLL)
-    {
-      int new_group_nr = AmoebaNr[ax][ay];
-
-      AmoebaNr[newax][neway] = new_group_nr;
-      AmoebaCnt[new_group_nr]++;
-      AmoebenVereinigen(newax,neway);
     }
   }
 
-  if (element!=EL_AMOEBE_NASS || neway<ay || !IS_FREE(newax,neway) ||
-      (neway==lev_fieldy-1 && newax!=ax))
+  if (!(moved & MF_MOVING) && !player->Pushing)
+    player->Frame = 0;
+  else
+#if 0
+    player->Frame = (player->Frame + 1) % 4;
+#else
+    player->Frame += 1 * 0;
+#endif
+
+  if (moved & MF_MOVING)
   {
-    Feld[newax][neway] = EL_AMOEBING;
-    Store[newax][neway] = element;
+    if (old_jx != jx && old_jy == jy)
+      player->MovDir = (old_jx < jx ? MV_RIGHT : MV_LEFT);
+    else if (old_jx == jx && old_jy != jy)
+      player->MovDir = (old_jy < jy ? MV_DOWN : MV_UP);
+
+    DrawLevelField(jx, jy);	/* for "DrawCrumbledSand()" */
+
+    player->last_move_dir = player->MovDir;
+    player->is_moving = TRUE;
   }
-  else if (neway==ay)
-    Feld[newax][neway] = EL_TROPFEN;
   else
   {
-    InitMovingField(ax,ay,MV_DOWN);
-    Feld[ax][ay] = EL_TROPFEN;
-    Store[ax][ay] = EL_AMOEBE_NASS;
-    ContinueMoving(ax,ay);
+    CheckGravityMovement(player);
+
+    /*
+    player->last_move_dir = MV_NO_MOVING;
+    */
+    player->is_moving = FALSE;
+  }
+
+  TestIfHeroTouchesBadThing(jx, jy);
+
+  if (!player->active)
+    RemoveHero(player);
+
+  return moved;
+}
+
+void ScrollFigure(struct PlayerInfo *player, int mode)
+{
+  int jx = player->jx, jy = player->jy;
+  int last_jx = player->last_jx, last_jy = player->last_jy;
+  int move_stepsize = TILEX / player->move_delay_value;
+
+  if (!player->active || !player->MovPos)
+    return;
+
+  if (mode == SCROLL_INIT)
+  {
+    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;
+
+    DrawPlayer(player);
     return;
   }
+  else if (!FrameReached(&player->actual_frame_counter, 1))
+    return;
 
-  DrawLevelField(newax,neway);
+  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;
+
+  /* before DrawPlayer() to draw correct player graphic for this case */
+  if (player->MovPos == 0)
+    CheckGravityMovement(player);
+
+  DrawPlayer(player);
+
+  if (player->MovPos == 0)
+  {
+    if (IS_QUICK_GATE(Feld[last_jx][last_jy]))
+    {
+      /* continue with normal speed after quickly moving through gate */
+      HALVE_PLAYER_SPEED(player);
+
+      /* be able to make the next move without delay */
+      player->move_delay = 0;
+    }
+
+    player->last_jx = jx;
+    player->last_jy = jy;
+
+    if (Feld[jx][jy] == EL_EXIT_OPEN ||
+	Feld[jx][jy] == EL_SP_EXIT_OPEN)
+    {
+      RemoveHero(player);
+
+      if (local_player->friends_still_needed == 0 ||
+	  Feld[jx][jy] == EL_SP_EXIT_OPEN)
+	player->LevelSolved = player->GameOver = TRUE;
+    }
+
+    if (tape.single_step && tape.recording && !tape.pausing &&
+	!player->programmed_action)
+      TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
+  }
 }
 
-void Life(int ax, int ay)
+void ScrollScreen(struct PlayerInfo *player, int mode)
 {
-  int x1,y1,x2,y2;
-  static int life[4] = { 2,3,3,3 };	/* "Life"-Parameter */
-  int life_time = 20;
-  int element = Feld[ax][ay];
+  static unsigned long screen_frame_counter = 0;
 
-  CheckExploding = TRUE;
+  if (mode == SCROLL_INIT)
+  {
+    /* set scrolling step size according to actual player's moving speed */
+    ScrollStepSize = TILEX / player->move_delay_value;
 
-  if (Stop[ax][ay])
+    screen_frame_counter = FrameCounter;
+    ScreenMovDir = player->MovDir;
+    ScreenMovPos = player->MovPos;
+    ScreenGfxPos = ScrollStepSize * (ScreenMovPos / ScrollStepSize);
+    return;
+  }
+  else if (!FrameReached(&screen_frame_counter, 1))
     return;
 
-  if (!MovDelay[ax][ay])	/* neue Phase / noch nicht gewartet */
-    MovDelay[ax][ay] = life_time;
-
-  if (MovDelay[ax][ay])		/* neue Phase / in Wartezustand */
+  if (ScreenMovPos)
   {
-    MovDelay[ax][ay]--;
-    if (MovDelay[ax][ay])
-      return;
+    ScreenMovPos += (ScreenMovPos > 0 ? -1 : 1) * ScrollStepSize;
+    ScreenGfxPos = ScrollStepSize * (ScreenMovPos / ScrollStepSize);
+    redraw_mask |= REDRAW_FIELD;
   }
+  else
+    ScreenMovDir = MV_NO_MOVING;
+}
 
-  for(y1=-1;y1<2;y1++) for(x1=-1;x1<2;x1++)
+void TestIfGoodThingHitsBadThing(int good_x, int good_y, int good_move_dir)
+{
+  int i, kill_x = -1, kill_y = -1;
+  static int test_xy[4][2] =
   {
-    int xx = ax+x1, yy = ay+y1;
-    int nachbarn = 0;
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+  static int test_dir[4] =
+  {
+    MV_UP,
+    MV_LEFT,
+    MV_RIGHT,
+    MV_DOWN
+  };
 
-    if (!IN_LEV_FIELD(xx,yy))
-      continue;
+  for (i=0; i<4; i++)
+  {
+    int test_x, test_y, test_move_dir, test_element;
 
-    for(y2=-1;y2<2;y2++) for(x2=-1;x2<2;x2++)
-    {
-      int x = xx+x2, y = yy+y2;
+    test_x = good_x + test_xy[i][0];
+    test_y = good_y + test_xy[i][1];
+    if (!IN_LEV_FIELD(test_x, test_y))
+      continue;
 
-      if (!IN_LEV_FIELD(x,y) || (x==xx && y==yy))
-	continue;
+    test_move_dir =
+      (IS_MOVING(test_x, test_y) ? MovDir[test_x][test_y] : MV_NO_MOVING);
 
-      if (((Feld[x][y]==element || (element==EL_LIFE && PLAYER(x,y))) &&
-	   !Stop[x][y]) ||
-	  (IS_FREE(x,y) && Stop[x][y]))
-	nachbarn++;
-    }
+#if 0
+    test_element = Feld[test_x][test_y];
+#else
+    test_element = MovingOrBlocked2ElementIfNotLeaving(test_x, test_y);
+#endif
 
-    if (xx==ax && yy==ay)		/* mittleres Feld mit Amoebe */
+    /* 1st case: good thing is moving towards DONT_GO_TO 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 (nachbarn<life[0] || nachbarn>life[1])
-      {
-	Feld[xx][yy] = EL_LEERRAUM;
-	if (!Stop[xx][yy])
-	  DrawLevelField(xx,yy);
-	Stop[xx][yy] = TRUE;
-      }
-    }
-    else if (IS_FREE(xx,yy) || Feld[xx][yy]==EL_ERDREICH)
-    {					/* Randfeld ohne Amoebe */
-      if (nachbarn>=life[2] && nachbarn<=life[3])
-      {
-	Feld[xx][yy] = element;
-	MovDelay[xx][yy] = (element==EL_LIFE ? 0 : life_time-1);
-	if (!Stop[xx][yy])
-	  DrawLevelField(xx,yy);
-	Stop[xx][yy] = TRUE;
-      }
+      kill_x = test_x;
+      kill_y = test_y;
+      break;
     }
   }
-}
 
-void Ablenk(int x, int y)
-{
-  CheckExploding = TRUE;
-
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-    MovDelay[x][y] = 33*(level.dauer_ablenk/10);
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
+  if (kill_x != -1 || kill_y != -1)
   {
-    MovDelay[x][y]--;
-    if (MovDelay[x][y])
+    if (IS_PLAYER(good_x, good_y))
     {
-      if (IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-	DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_ABLENK+MovDelay[x][y]%4);
-      if (!(MovDelay[x][y]%4))
-	PlaySoundLevel(x,y,SND_MIEP);
-      return;
+      struct PlayerInfo *player = PLAYERINFO(good_x, good_y);
+
+      if (player->shield_deadly_time_left > 0)
+	Bang(kill_x, kill_y);
+      else if (!PLAYER_PROTECTED(good_x, good_y))
+	KillHero(player);
     }
+    else
+      Bang(good_x, good_y);
   }
-
-  Feld[x][y]=EL_ABLENK_AUS;
-  DrawLevelField(x,y);
-  if (ZX==x && ZY==y)
-    ZX=ZY=-1;
 }
 
-void Birne(int x, int y)
+void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
 {
-  CheckExploding = TRUE;
+  int i, kill_x = -1, kill_y = -1;
+  int bad_element = Feld[bad_x][bad_y];
+  static int test_xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+  static int test_dir[4] =
+  {
+    MV_UP,
+    MV_LEFT,
+    MV_RIGHT,
+    MV_DOWN
+  };
 
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-    MovDelay[x][y] = 400;
+  if (bad_element == EL_EXPLOSION)	/* skip just exploding bad things */
+    return;
 
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
+  for (i=0; i<4; i++)
   {
-    MovDelay[x][y]--;
-    if (MovDelay[x][y])
+    int test_x, test_y, test_move_dir, test_element;
+
+    test_x = bad_x + test_xy[i][0];
+    test_y = bad_y + test_xy[i][1];
+    if (!IN_LEV_FIELD(test_x, test_y))
+      continue;
+
+    test_move_dir =
+      (IS_MOVING(test_x, test_y) ? MovDir[test_x][test_y] : MV_NO_MOVING);
+
+    test_element = Feld[test_x][test_y];
+
+    /* 1st case: good thing is moving towards DONT_GO_TO 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 (!(MovDelay[x][y]%5))
+      /* good thing is player or penguin that does not move away */
+      if (IS_PLAYER(test_x, test_y))
       {
-	if (!(MovDelay[x][y]%10))
-	  Feld[x][y]=EL_ABLENK_EIN;
-	else
-	  Feld[x][y]=EL_ABLENK_AUS;
-	DrawLevelField(x,y);
-	Feld[x][y]=EL_ABLENK_EIN;
+	struct PlayerInfo *player = PLAYERINFO(test_x, test_y);
+
+	if (bad_element == EL_ROBOT && player->is_moving)
+	  continue;	/* robot does not kill player if he is moving */
+
+	kill_x = test_x;
+	kill_y = test_y;
+	break;
+      }
+      else if (test_element == EL_PENGUIN)
+      {
+	kill_x = test_x;
+	kill_y = test_y;
+	break;
       }
-      return;
     }
   }
 
-  Feld[x][y]=EL_ABLENK_AUS;
-  DrawLevelField(x,y);
-  if (ZX==x && ZY==y)
-    ZX=ZY=-1;
-}
-
-void Blubber(int x, int y)
-{
-  CheckExploding = TRUE;
-
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-    MovDelay[x][y] = 20;
-
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
+  if (kill_x != -1 || kill_y != -1)
   {
-    int blubber;
-
-    MovDelay[x][y]--;
-    blubber = MovDelay[x][y]/5;
-    if (!(MovDelay[x][y]%5) && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-      DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_GEBLUBBER+3-blubber);
-  }
-}
+    if (IS_PLAYER(kill_x, kill_y))
+    {
+      struct PlayerInfo *player = PLAYERINFO(kill_x, kill_y);
 
-void NussKnacken(int x, int y)
-{
-  CheckExploding = TRUE;
+#if 0
+      int dir = player->MovDir;
+      int newx = player->jx + (dir == MV_LEFT ? -1 : dir == MV_RIGHT ? +1 : 0);
+      int newy = player->jy + (dir == MV_UP   ? -1 : dir == MV_DOWN  ? +1 : 0);
 
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-    MovDelay[x][y] = 4;
+      if (Feld[bad_x][bad_y] == EL_ROBOT && player->is_moving &&
+	  newx != bad_x && newy != bad_y)
+	;	/* robot does not kill player if he is moving */
+      else
+	printf("-> %d\n", player->MovDir);
 
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
-  {
-    MovDelay[x][y]--;
-    if (MovDelay[x][y] && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-      DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_CRACKINGNUT+3-MovDelay[x][y]);
+      if (Feld[bad_x][bad_y] == EL_ROBOT && player->is_moving &&
+	  newx != bad_x && newy != bad_y)
+	;	/* robot does not kill player if he is moving */
+      else
+	;
+#endif
 
-    if (!MovDelay[x][y])
-    {
-      Feld[x][y] = EL_EDELSTEIN;
-      DrawLevelField(x,y);
+      if (player->shield_deadly_time_left > 0)
+	Bang(bad_x, bad_y);
+      else if (!PLAYER_PROTECTED(kill_x, kill_y))
+	KillHero(player);
     }
+    else
+      Bang(kill_x, kill_y);
   }
 }
 
-void SiebAktivieren(int x, int y, int typ)
+void TestIfHeroTouchesBadThing(int x, int y)
 {
-  CheckExploding = TRUE;
-
-  if (SiebAktiv>1)
-  {
-    if (SiebAktiv%2 && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-      DrawGraphic(SCROLLX(x),SCROLLY(y),
-		  (typ==1 ? GFX_SIEB_VOLL : GFX_SIEB2_VOLL)+3-(SiebAktiv%8)/2);
-
-/*
-    if (!(SiebAktiv%4))
-      PlaySoundLevel(x,y,SND_MIEP);
-*/
+  TestIfGoodThingHitsBadThing(x, y, MV_NO_MOVING);
+}
 
-  }
-  else
-  {
-    Feld[x][y] = (typ==1 ? EL_SIEB_TOT : EL_SIEB2_TOT);
-    DrawLevelField(x,y);
-  }
+void TestIfHeroRunsIntoBadThing(int x, int y, int move_dir)
+{
+  TestIfGoodThingHitsBadThing(x, y, move_dir);
 }
 
-void AusgangstuerPruefen(int x, int y)
+void TestIfBadThingTouchesHero(int x, int y)
 {
-  CheckExploding = TRUE;
+  TestIfBadThingHitsGoodThing(x, y, MV_NO_MOVING);
+}
 
-  if (!Gems)
-  {
-    Feld[x][y] = EL_AUSGANG_ACT;
-    PlaySoundLevel(x,y,SND_OEFFNEN);
-  }
+void TestIfBadThingRunsIntoHero(int x, int y, int move_dir)
+{
+  TestIfBadThingHitsGoodThing(x, y, move_dir);
 }
 
-void AusgangstuerOeffnen(int x, int y)
+void TestIfFriendTouchesBadThing(int x, int y)
 {
-  int speed = 3;
+  TestIfGoodThingHitsBadThing(x, y, MV_NO_MOVING);
+}
 
-  CheckExploding = TRUE;
+void TestIfBadThingTouchesFriend(int x, int y)
+{
+  TestIfBadThingHitsGoodThing(x, y, MV_NO_MOVING);
+}
 
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-    MovDelay[x][y] = 5*speed;
+void TestIfBadThingTouchesOtherBadThing(int bad_x, int bad_y)
+{
+  int i, kill_x = bad_x, kill_y = bad_y;
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
 
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
+  for (i=0; i<4; i++)
   {
-    int tuer;
+    int x, y, element;
 
-    MovDelay[x][y]--;
-    tuer = MovDelay[x][y]/speed;
-    if (!(MovDelay[x][y]%speed) && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-      DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_AUSGANG_AUF-tuer);
+    x = bad_x + xy[i][0];
+    y = bad_y + xy[i][1];
+    if (!IN_LEV_FIELD(x, y))
+      continue;
 
-    if (!MovDelay[x][y])
+    element = Feld[x][y];
+    if (IS_AMOEBOID(element) || element == EL_GAMEOFLIFE ||
+	element == EL_AMOEBA_CREATING || element == EL_AMOEBA_DROP)
     {
-      Feld[x][y] = EL_AUSGANG_AUF;
-      DrawLevelField(x,y);
+      kill_x = x;
+      kill_y = y;
+      break;
     }
   }
+
+  if (kill_x != bad_x || kill_y != bad_y)
+    Bang(bad_x, bad_y);
 }
 
-void AusgangstuerBlinken(int x, int y)
+void KillHero(struct PlayerInfo *player)
 {
-  CheckExploding = TRUE;
+  int jx = player->jx, jy = player->jy;
 
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-    MovDelay[x][y] = 16;
+  if (!player->active)
+    return;
 
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
-  {
-    int phase;
+  if (IS_PFORTE(Feld[jx][jy]))
+    Feld[jx][jy] = EL_EMPTY;
 
-    MovDelay[x][y]--;
-    phase = (MovDelay[x][y] % 16)/2;
-    if (phase>3)
-      phase = 7-phase;
-    if (!(MovDelay[x][y]%2) && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-      DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_AUSGANG_AUF+phase);
-  }
+  /* deactivate shield (else Bang()/Explode() would not work right) */
+  player->shield_normal_time_left = 0;
+  player->shield_deadly_time_left = 0;
+
+  Bang(jx, jy);
+  BuryHero(player);
 }
 
-void EdelsteinFunkeln(int x, int y)
+static void KillHeroUnlessProtected(int x, int y)
 {
-  int speed = 2;
+  if (!PLAYER_PROTECTED(x, y))
+    KillHero(PLAYERINFO(x, y));
+}
 
-  CheckExploding = TRUE;
+void BuryHero(struct PlayerInfo *player)
+{
+  int jx = player->jx, jy = player->jy;
 
-  if (IS_MOVING(x,y))
+  if (!player->active)
     return;
 
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-    MovDelay[x][y] = 4*speed;
-
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
-  {
-    int phase;
+  PlaySoundLevel(jx, jy, SND_PLAYER_DYING);
+  PlaySoundLevel(jx, jy, SND_GAME_LOSING);
 
-    MovDelay[x][y]--;
-    phase = MovDelay[x][y]/speed;
-    if (!(MovDelay[x][y]%speed) && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-      DrawGraphic(SCROLLX(x),SCROLLY(y),GFX_EDELSTEIN2-phase);
-  }
+  player->GameOver = TRUE;
+  RemoveHero(player);
 }
 
-void MauerWaechst(int x, int y)
+void RemoveHero(struct PlayerInfo *player)
 {
-  int speed = 3;
-
-  CheckExploding = TRUE;
+  int jx = player->jx, jy = player->jy;
+  int i, found = FALSE;
 
-  if (!MovDelay[x][y])		/* neue Phase / noch nicht gewartet */
-    MovDelay[x][y] = 3*speed;
+  player->present = FALSE;
+  player->active = FALSE;
 
-  if (MovDelay[x][y])		/* neue Phase / in Wartezustand */
-  {
-    int phase;
+  if (!ExplodeField[jx][jy])
+    StorePlayer[jx][jy] = 0;
 
-    MovDelay[x][y]--;
-    phase = 2-MovDelay[x][y]/speed;
-    if (!(MovDelay[x][y]%speed) && IN_SCR_FIELD(SCROLLX(x),SCROLLY(y)))
-      DrawGraphic(SCROLLX(x),SCROLLY(y),
-		  (Store[x][y]==MV_LEFT ? GFX_MAUER_L1 : GFX_MAUER_R1)+phase);
+  for (i=0; i<MAX_PLAYERS; i++)
+    if (stored_player[i].active)
+      found = TRUE;
 
-    if (!MovDelay[x][y])
-    {
-      if (Store[x][y]==MV_LEFT)
-      {
-	if (IN_LEV_FIELD(x-1,y) && IS_MAUER(Feld[x-1][y]))
-	  DrawLevelField(x-1,y);
-      }
-      else
-      {
-	if (IN_LEV_FIELD(x+1,y) && IS_MAUER(Feld[x+1][y]))
-	  DrawLevelField(x+1,y);
-      }
+  if (!found)
+    AllPlayersGone = TRUE;
 
-      Feld[x][y] = EL_MAUER_LEBT;
-      Store[x][y] = 0;
-      DrawLevelField(x,y);
-    }
-  }
+  ExitX = ZX = jx;
+  ExitY = ZY = jy;
 }
 
-void MauerAbleger(int ax, int ay)
+int DigField(struct PlayerInfo *player,
+	     int x, int y, int real_dx, int real_dy, int mode)
 {
-  BOOL links_frei = FALSE, rechts_frei = FALSE;
-  BOOL links_massiv = FALSE, rechts_massiv = FALSE;
-
-  CheckExploding = TRUE;
+  int jx = player->jx, jy = player->jy;
+  int dx = x - jx, dy = y - jy;
+  int move_direction = (dx == -1 ? MV_LEFT :
+			dx == +1 ? MV_RIGHT :
+			dy == -1 ? MV_UP :
+			dy == +1 ? MV_DOWN : MV_NO_MOVING);
+  int element;
 
-  if (!MovDelay[ax][ay])	/* neue Mauer / noch nicht gewartet */
-    MovDelay[ax][ay] = 3;
+  if (player->MovPos == 0)
+    player->Pushing = FALSE;
 
-  if (MovDelay[ax][ay])		/* neue Mauer / in Wartezustand */
+  if (mode == DF_NO_PUSH)
   {
-    MovDelay[ax][ay]--;
-    if (MovDelay[ax][ay])
-      return;
+    player->Switching = FALSE;
+    player->push_delay = 0;
+    return MF_NO_ACTION;
   }
 
-  if (IN_LEV_FIELD(ax-1,ay) && IS_FREE(ax-1,ay))
-    links_frei = TRUE;
-  if (IN_LEV_FIELD(ax+1,ay) && IS_FREE(ax+1,ay))
-    rechts_frei = TRUE;
+  if (IS_MOVING(x, y) || IS_PLAYER(x, y))
+    return MF_NO_ACTION;
 
-  if (links_frei)
+  if (IS_TUBE(Feld[jx][jy]))
   {
-    Feld[ax-1][ay] = EL_MAUERND;
-    Store[ax-1][ay] = MV_LEFT;
-    if (IN_SCR_FIELD(SCROLLX(ax-1),SCROLLY(ay)))
-      DrawGraphic(SCROLLX(ax-1),SCROLLY(ay),GFX_MAUER_L1);
-  }
-  if (rechts_frei)
-  {
-    Feld[ax+1][ay] = EL_MAUERND;
-    Store[ax+1][ay] = MV_RIGHT;
-    if (IN_SCR_FIELD(SCROLLX(ax+1),SCROLLY(ay)))
-      DrawGraphic(SCROLLX(ax+1),SCROLLY(ay),GFX_MAUER_R1);
-  }
+    int i = 0;
+    int tube_leave_directions[][2] =
+    {
+      { EL_TUBE_ALL,			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 },
+      { EL_TUBE_VERTICAL_RIGHT,		          MV_RIGHT | MV_UP | MV_DOWN },
+      { EL_TUBE_HORIZONTAL_UP,		MV_LEFT | MV_RIGHT | MV_UP           },
+      { EL_TUBE_HORIZONTAL_DOWN,	MV_LEFT | MV_RIGHT |         MV_DOWN },
+      { EL_TUBE_LEFT_UP,		MV_LEFT |            MV_UP           },
+      { EL_TUBE_LEFT_DOWN,		MV_LEFT |                    MV_DOWN },
+      { EL_TUBE_RIGHT_UP,		          MV_RIGHT | MV_UP           },
+      { EL_TUBE_RIGHT_DOWN,		          MV_RIGHT |         MV_DOWN },
+      { -1,                     	MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN }
+    };
+
+    while (tube_leave_directions[i][0] != Feld[jx][jy])
+    {
+      i++;
+      if (tube_leave_directions[i][0] == -1)	/* should not happen */
+	break;
+    }
 
-  if (links_frei || rechts_frei)
-    DrawLevelField(ax,ay);
+    if (!(tube_leave_directions[i][1] & move_direction))
+      return MF_NO_ACTION;	/* tube has no opening in this direction */
+  }
 
-  if (!IN_LEV_FIELD(ax-1,ay) || IS_MAUER(Feld[ax-1][ay]))
-    links_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax+1,ay) || IS_MAUER(Feld[ax+1][ay]))
-    rechts_massiv = TRUE;
+  element = Feld[x][y];
 
-  if (links_massiv && rechts_massiv)
-    Feld[ax][ay] = EL_MAUERWERK;
-}
+  switch (element)
+  {
+    case EL_EMPTY:
+    case EL_SAND:
+    case EL_INVISIBLE_SAND:
+    case EL_INVISIBLE_SAND_ACTIVE:
+    case EL_TRAP:
+    case EL_SP_BASE:
+    case EL_SP_BUGGY_BASE:
+    case EL_SP_BUGGY_BASE_ACTIVATING:
+      RemoveField(x, y);
+      PlaySoundLevelElementAction(x, y, element, ACTION_DIGGING);
+      break;
 
-int GameActions(int mx, int my, int button)
-{
-  static long time_delay=0, action_delay=0;
-  int Action;
+    case EL_EMERALD:
+    case EL_BD_DIAMOND:
+    case EL_EMERALD_YELLOW:
+    case EL_EMERALD_RED:
+    case EL_EMERALD_PURPLE:
+    case EL_DIAMOND:
+    case EL_SP_INFOTRON:
+    case EL_PEARL:
+    case EL_CRYSTAL:
+      RemoveField(x, y);
+      local_player->gems_still_needed -= (element == EL_DIAMOND ? 3 :
+					  element == EL_PEARL ? 5 :
+					  element == EL_CRYSTAL ? 8 : 1);
+      if (local_player->gems_still_needed < 0)
+	local_player->gems_still_needed = 0;
+      RaiseScoreElement(element);
+      DrawText(DX_EMERALDS, DY_EMERALDS,
+	       int2str(local_player->gems_still_needed, 3),
+	       FS_SMALL, FC_YELLOW);
+      PlaySoundLevelElementAction(x, y, element, ACTION_COLLECTING);
+      break;
 
-  if (TimeLeft>0 && DelayReached(&time_delay,100) && !tape.pausing)
-  {
-    TimeLeft--;
+    case EL_SPEED_PILL:
+      RemoveField(x, y);
+      player->move_delay_value = MOVE_DELAY_HIGH_SPEED;
+      PlaySoundLevel(x, y, SND_SPEED_PILL_COLLECTING);
+      break;
 
-    if (tape.recording || tape.playing)
-      DrawVideoDisplay(VIDEO_STATE_TIME_ON,level.time-TimeLeft);
+    case EL_ENVELOPE:
+      Feld[x][y] = EL_EMPTY;
+      PlaySoundLevel(x, y, SND_ENVELOPE_COLLECTING);
+      break;
 
-    if (TimeLeft<=10)
-      PlaySoundStereo(SND_GONG,PSND_MAX_RIGHT);
+    case EL_EXTRA_TIME:
+      RemoveField(x, y);
+      if (level.time > 0)
+      {
+	TimeLeft += 10;
+	DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+      }
+      PlaySoundStereo(SND_EXTRA_TIME_COLLECTING, SOUND_MAX_RIGHT);
+      break;
 
-    DrawText(DX_TIME,DY_TIME,int2str(TimeLeft,3),FS_SMALL,FC_YELLOW);
-    BackToFront();
-  }
+    case EL_SHIELD_NORMAL:
+      RemoveField(x, y);
+      player->shield_normal_time_left += 10;
+      PlaySoundLevel(x, y, SND_SHIELD_NORMAL_COLLECTING);
+      break;
 
-  if (!TimeLeft)
-    KillHero();
+    case EL_SHIELD_DEADLY:
+      RemoveField(x, y);
+      player->shield_normal_time_left += 10;
+      player->shield_deadly_time_left += 10;
+      PlaySoundLevel(x, y, SND_SHIELD_DEADLY_COLLECTING);
+      break;
 
-  Action = (CheckMoving || CheckExploding || SiebAktiv);
+    case EL_DYNAMITE:
+    case EL_SP_DISK_RED:
+      RemoveField(x, y);
+      player->dynamite++;
+      RaiseScoreElement(EL_DYNAMITE);
+      DrawText(DX_DYNAMITE, DY_DYNAMITE,
+	       int2str(local_player->dynamite, 3),
+	       FS_SMALL, FC_YELLOW);
+      PlaySoundLevelElementAction(x, y, element, ACTION_COLLECTING);
+      break;
 
-/*
-  if (Action && DelayReached(&action_delay,3))
-*/
+    case EL_DYNABOMB_NR:
+      RemoveField(x, y);
+      player->dynabomb_count++;
+      player->dynabombs_left++;
+      RaiseScoreElement(EL_DYNAMITE);
+      PlaySoundLevel(x, y, SND_DYNABOMB_NR_COLLECTING);
+      break;
 
-  if (DelayReached(&action_delay,3))
-  {
-    int x,y,element;
+    case EL_DYNABOMB_SZ:
+      RemoveField(x, y);
+      player->dynabomb_size++;
+      RaiseScoreElement(EL_DYNAMITE);
+      PlaySoundLevel(x, y, SND_DYNABOMB_SZ_COLLECTING);
+      break;
 
-    if (tape.pausing || (tape.playing && !TapePlayDelay()))
-      return(ACT_GO_ON);
-    else if (tape.recording)
-      TapeRecordDelay();
+    case EL_DYNABOMB_XL:
+      RemoveField(x, y);
+      player->dynabomb_xl = TRUE;
+      RaiseScoreElement(EL_DYNAMITE);
+      PlaySoundLevel(x, y, SND_DYNABOMB_XL_COLLECTING);
+      break;
 
-    CheckMoving = CheckExploding = FALSE;
-    for(y=0;y<lev_fieldy;y++) for(x=0;x<lev_fieldx;x++)
+    case EL_KEY1:
+    case EL_KEY2:
+    case EL_KEY3:
+    case EL_KEY4:
     {
-      Stop[x][y] = FALSE;
-      if (JustHit[x][y]>0)
-	JustHit[x][y]--;
+      int key_nr = element - EL_KEY1;
+
+      RemoveField(x, y);
+      player->key[key_nr] = TRUE;
+      RaiseScoreElement(element);
+      DrawMiniGraphicExt(drawto, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
+			 IMG_KEY1 + key_nr);
+      DrawMiniGraphicExt(window, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
+			 IMG_KEY1 + key_nr);
+      PlaySoundLevel(x, y, SND_KEY_COLLECTING);
+      break;
     }
 
-    for(y=0;y<lev_fieldy;y++) for(x=0;x<lev_fieldx;x++)
+    case EL_EM_KEY1:
+    case EL_EM_KEY2:
+    case EL_EM_KEY3:
+    case EL_EM_KEY4:
     {
-      element = Feld[x][y];
-
-      if (element==EL_LEERRAUM || element==EL_ERDREICH)
-	continue;
-
-      if (!IS_MOVING(x,y) && (CAN_FALL(element) || CAN_MOVE(element)))
-      {
-	StartMoving(x,y);
-	if (Feld[x][y]==EL_EDELSTEIN2)
-	  EdelsteinFunkeln(x,y);
-      }
-      else if (IS_MOVING(x,y))
-	ContinueMoving(x,y);
-      else if (element==EL_DYNAMIT || element==EL_DYNABOMB)
-	CheckDynamite(x,y);
-      else if (element==EL_EXPLODING)
-	Explode(x,y,Frame[x][y],EX_NORMAL);
-      else if (element==EL_AMOEBING)
-	AmoebeWaechst(x,y);
-      else if (IS_AMOEBALIVE(element))
-	AmoebeAbleger(x,y);
-      else if (element==EL_LIFE || element==EL_LIFE_ASYNC)
-	Life(x,y);
-      else if (element==EL_ABLENK_EIN)
-	Ablenk(x,y);
-      else if (element==EL_SALZSAEURE)
-	Blubber(x,y);
-      else if (element==EL_BLURB_LEFT || element==EL_BLURB_RIGHT)
-	Blurb(x,y);
-      else if (element==EL_CRACKINGNUT)
-	NussKnacken(x,y);
-      else if (element==EL_AUSGANG_ZU)
-	AusgangstuerPruefen(x,y);
-      else if (element==EL_AUSGANG_ACT)
-	AusgangstuerOeffnen(x,y);
-      else if (element==EL_AUSGANG_AUF)
-	AusgangstuerBlinken(x,y);
-      else if (element==EL_MAUERND)
-	MauerWaechst(x,y);
-      else if (element==EL_MAUER_LEBT)
-	MauerAbleger(x,y);
-
-      if (SiebAktiv)
-      {
-	if (element==EL_SIEB_LEER || element==EL_SIEB_VOLL ||
-	    Store[x][y]==EL_SIEB_LEER)
-	  SiebAktivieren(x,y,1);
-	else if (element==EL_SIEB2_LEER || element==EL_SIEB2_VOLL ||
-		 Store[x][y]==EL_SIEB2_LEER)
-	  SiebAktivieren(x,y,2);
-      }
-    }
-
-    if (SiebAktiv)
-      SiebAktiv--;
-
-    if (CheckMoving || CheckExploding)
-      BackToFront();
-  }
+      int key_nr = element - EL_EM_KEY1;
+
+      RemoveField(x, y);
+      player->key[key_nr] = TRUE;
+      RaiseScoreElement(element);
+      DrawMiniGraphicExt(drawto, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
+			 IMG_KEY1 + key_nr);
+      DrawMiniGraphicExt(window, DX_KEYS + key_nr * MINI_TILEX, DY_KEYS,
+			 IMG_KEY1 + key_nr);
+      PlaySoundLevel(x, y, SND_KEY_COLLECTING);
+      break;
+    }
 
-  return(ACT_GO_ON);
-}
+    case EL_ROBOT_WHEEL:
+      Feld[x][y] = EL_ROBOT_WHEEL_ACTIVE;
+      ZX = x;
+      ZY = y;
+      DrawLevelField(x, y);
+      PlaySoundLevel(x, y, SND_ROBOT_WHEEL_ACTIVATING);
+      return MF_ACTION;
+      break;
 
-void ScrollLevel(int dx, int dy)
-{
-  int x,y;
+    case EL_SP_TERMINAL:
+      {
+	int xx, yy;
 
-  XCopyArea(display,drawto_field,drawto_field,gc,
-	    SX+TILEX*(dx==-1),SY+TILEY*(dy==-1),
-	    SXSIZE-TILEX*(dx!=0),SYSIZE-TILEY*(dy!=0),
-	    SX+TILEX*(dx==1),SY+TILEY*(dy==1));
+	PlaySoundLevel(x, y, SND_SP_TERMINAL_ACTIVATING);
 
-  if (dx)
-  {
-    x = dx==1 ? 0 : SCR_FIELDX-1;
-    for(y=0;y<SCR_FIELDY;y++)
-      DrawScreenField(x,y);
-  }
-  if (dy)
-  {
-    y = dy==1 ? 0 : SCR_FIELDY-1;
-    for(x=0;x<SCR_FIELDY;x++)
-      DrawScreenField(x,y);
-  }
+	for (yy=0; yy<lev_fieldy; yy++)
+	{
+	  for (xx=0; xx<lev_fieldx; xx++)
+	  {
+	    if (Feld[xx][yy] == EL_SP_DISK_YELLOW)
+	      Bang(xx, yy);
+	    else if (Feld[xx][yy] == EL_SP_TERMINAL)
+	      Feld[xx][yy] = EL_SP_TERMINAL_ACTIVE;
+	  }
+	}
 
-  redraw_mask|=REDRAW_FIELD;
-}
+	return MF_ACTION;
+      }
+      break;
 
-BOOL MoveFigureOneStep(int dx, int dy)
-{
-  int oldJX,oldJY, newJX = JX+dx,newJY = JY+dy;
-  int element;
-  int can_move;
+    case EL_CONVEYOR_BELT1_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT1_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT1_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT2_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT2_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT2_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT3_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT3_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT3_SWITCH_RIGHT:
+    case EL_CONVEYOR_BELT4_SWITCH_LEFT:
+    case EL_CONVEYOR_BELT4_SWITCH_MIDDLE:
+    case EL_CONVEYOR_BELT4_SWITCH_RIGHT:
+      if (!player->Switching)
+      {
+	player->Switching = TRUE;
+	ToggleBeltSwitch(x, y);
+	PlaySoundLevel(x, y, SND_CONVEYOR_BELT_SWITCH_ACTIVATING);
+      }
+      return MF_ACTION;
+      break;
 
-  if (!dx && !dy)
-    return(MF_NO_ACTION);
-  if (!IN_LEV_FIELD(newJX,newJY))
-    return(MF_NO_ACTION);
+    case EL_SWITCHGATE_SWITCH_UP:
+    case EL_SWITCHGATE_SWITCH_DOWN:
+      if (!player->Switching)
+      {
+	player->Switching = TRUE;
+	ToggleSwitchgateSwitch(x, y);
+	PlaySoundLevel(x, y, SND_SWITCHGATE_SWITCH_ACTIVATING);
+      }
+      return MF_ACTION;
+      break;
 
-  element = MovingOrBlocked2Element(newJX,newJY);
+    case EL_LIGHT_SWITCH:
+    case EL_LIGHT_SWITCH_ACTIVE:
+      if (!player->Switching)
+      {
+	player->Switching = TRUE;
+	ToggleLightSwitch(x, y);
+	PlaySoundLevel(x, y, element == EL_LIGHT_SWITCH ?
+		       SND_LIGHT_SWITCH_ACTIVATING :
+		       SND_LIGHT_SWITCH_DEACTIVATING);
+      }
+      return MF_ACTION;
+      break;
 
-  if (DONT_GO_TO(element))
-  {
-    if (element==EL_SALZSAEURE && dx==0 && dy==1)
-    {
-      Blurb(JX,JY);
-      Feld[JX][JY] = EL_SPIELFIGUR;
-      InitMovingField(JX,JY,MV_DOWN);
-      Store[JX][JY] = EL_SALZSAEURE;
-      ContinueMoving(JX,JY);
+    case EL_TIMEGATE_SWITCH:
+      ActivateTimegateSwitch(x, y);
+      PlaySoundLevel(x, y, SND_TIMEGATE_SWITCH_ACTIVATING);
 
-      PlaySoundLevel(JX,JY,SND_AUTSCH);
-      PlaySoundLevel(JX,JY,SND_LACHEN);
-      GameOver = TRUE;
-      JX = JY = -1;
-    }
-    else
-      KillHero();
+      return MF_ACTION;
+      break;
 
-    return(MF_MOVING);
-  }
+    case EL_BALLOON_SEND_LEFT:
+    case EL_BALLOON_SEND_RIGHT:
+    case EL_BALLOON_SEND_UP:
+    case EL_BALLOON_SEND_DOWN:
+    case EL_BALLOON_SEND_ANY_DIRECTION:
+      if (element == EL_BALLOON_SEND_ANY_DIRECTION)
+	game.balloon_dir = move_direction;
+      else
+	game.balloon_dir = (element == EL_BALLOON_SEND_LEFT  ? MV_LEFT :
+			    element == EL_BALLOON_SEND_RIGHT ? MV_RIGHT :
+			    element == EL_BALLOON_SEND_UP    ? MV_UP :
+			    element == EL_BALLOON_SEND_DOWN  ? MV_DOWN :
+			    MV_NO_MOVING);
+      PlaySoundLevel(x, y, SND_BALLOON_SWITCH_ACTIVATING);
+
+      return MF_ACTION;
+      break;
 
-  can_move = DigField(newJX,newJY,DF_DIG);
-  if (can_move != MF_MOVING)
-    return(can_move);
+      /* the following elements cannot be pushed by "snapping" */
+    case EL_ROCK:
+    case EL_BOMB:
+    case EL_DX_SUPABOMB:
+    case EL_NUT:
+    case EL_TIME_ORB_EMPTY:
+    case EL_SP_ZONK:
+    case EL_SP_DISK_ORANGE:
+    case EL_SPRING:
+      if (mode == DF_SNAP)
+	return MF_NO_ACTION;
+      /* no "break" -- fall through to next case */
+      /* the following elements can be pushed by "snapping" */
+    case EL_BD_ROCK:
+      if (dy)
+	return MF_NO_ACTION;
+
+      player->Pushing = TRUE;
+
+      if (!IN_LEV_FIELD(x+dx, y+dy) || !IS_FREE(x+dx, y+dy))
+	return MF_NO_ACTION;
+
+      if (real_dy)
+      {
+	if (IN_LEV_FIELD(jx, jy+real_dy) && !IS_SOLID(Feld[jx][jy+real_dy]))
+	  return MF_NO_ACTION;
+      }
 
-  oldJX = JX;
-  oldJY = JY;
-  JX = newJX;
-  JY = newJY;
+      if (player->push_delay == 0)
+	player->push_delay = FrameCounter;
+#if 0
+      if (!FrameReached(&player->push_delay, player->push_delay_value) &&
+	  !tape.playing && element != EL_SPRING)
+	return MF_NO_ACTION;
+#else
+      if (!FrameReached(&player->push_delay, player->push_delay_value) &&
+	  !(tape.playing && tape.file_version < FILE_VERSION_2_0) &&
+	  element != EL_SPRING)
+	return MF_NO_ACTION;
+#endif
 
-  if (Store[oldJX][oldJY])
-  {
-    DrawGraphic(SCROLLX(oldJX),SCROLLY(oldJY),el2gfx(Store[oldJX][oldJY]));
-    DrawGraphicThruMask(SCROLLX(oldJX),SCROLLY(oldJY),
-			el2gfx(Feld[oldJX][oldJY]));
-  }
-  else if (Feld[oldJX][oldJY]==EL_DYNAMIT)
-    DrawDynamite(oldJX,oldJY);
-  else
-    DrawLevelField(oldJX,oldJY);
+      if (mode == DF_SNAP)
+      {
+	InitMovingField(x, y, move_direction);
+	ContinueMoving(x, y);
+      }
+      else
+      {
+	RemoveField(x, y);
+	Feld[x + dx][y + dy] = element;
+      }
 
-  return(MF_MOVING);
-}
+      if (element == EL_SPRING)
+      {
+	Feld[x + dx][y + dy] = EL_SPRING;
+	MovDir[x + dx][y + dy] = move_direction;
+      }
 
-BOOL MoveFigure(int dx, int dy)
-{
-  static long move_delay = 0;
-  int moved = MF_NO_ACTION;
+      player->push_delay_value = (element == EL_SPRING ? 0 : 2 + RND(8));
 
-  if (GameOver || (!dx && !dy))
-    return(FALSE);
+      DrawLevelField(x + dx, y + dy);
+      PlaySoundLevelElementAction(x, y, element, ACTION_PUSHING);
+      break;
 
-  if (!DelayReached(&move_delay,10) && !tape.playing)
-    return(FALSE);
+    case EL_GATE1:
+    case EL_GATE2:
+    case EL_GATE3:
+    case EL_GATE4:
+      if (!player->key[element - EL_GATE1])
+	return MF_NO_ACTION;
+      break;
 
-  if (moved |= MoveFigureOneStep(dx,0))
-    moved |= MoveFigureOneStep(0,dy);
-  else
-  {
-    moved |= MoveFigureOneStep(0,dy);
-    moved |= MoveFigureOneStep(dx,0);
-  }
+    case EL_GATE1_GRAY:
+    case EL_GATE2_GRAY:
+    case EL_GATE3_GRAY:
+    case EL_GATE4_GRAY:
+      if (!player->key[element - EL_GATE1_GRAY])
+	return MF_NO_ACTION;
+      break;
 
-  if (moved & MF_MOVING)
-  {
-    int old_scroll_x=scroll_x, old_scroll_y=scroll_y;
+    case EL_EM_GATE1:
+    case EL_EM_GATE2:
+    case EL_EM_GATE3:
+    case EL_EM_GATE4:
+      if (!player->key[element - EL_EM_GATE1])
+	return MF_NO_ACTION;
+      if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
+	return MF_NO_ACTION;
 
-    if (scroll_x!=JX-MIDPOSX && JX>=MIDPOSX-1 && JX<=lev_fieldx-MIDPOSX)
-      scroll_x = JX-MIDPOSX;
-    if (scroll_y!=JY-MIDPOSY && JY>=MIDPOSY-1 && JY<=lev_fieldy-MIDPOSY)
-      scroll_y = JY-MIDPOSY;
+      /* automatically move to the next field with double speed */
+      player->programmed_action = move_direction;
+      DOUBLE_PLAYER_SPEED(player);
 
-    if (scroll_x!=old_scroll_x || scroll_y!=old_scroll_y)
-      ScrollLevel(old_scroll_x-scroll_x,old_scroll_y-scroll_y);
+      PlaySoundLevel(x, y, SND_GATE_PASSING);
+      break;
 
-    if (Feld[JX][JY]==EL_LEERRAUM)
-      DrawLevelElement(JX,JY,EL_SPIELFIGUR);
-    else
-      DrawGraphicThruMask(SCROLLX(JX),SCROLLY(JY),GFX_SPIELFIGUR);
-  }
+    case EL_EM_GATE1_GRAY:
+    case EL_EM_GATE2_GRAY:
+    case EL_EM_GATE3_GRAY:
+    case EL_EM_GATE4_GRAY:
+      if (!player->key[element - EL_EM_GATE1_GRAY])
+	return MF_NO_ACTION;
+      if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
+	return MF_NO_ACTION;
 
-  TestIfHeroHitsBadThing();
+      /* automatically move to the next field with double speed */
+      player->programmed_action = move_direction;
+      DOUBLE_PLAYER_SPEED(player);
 
-  BackToFront();
+      PlaySoundLevel(x, y, SND_GATE_PASSING);
+      break;
 
-  if (LevelSolved)
-    GameWon();
+    case EL_SWITCHGATE_OPEN:
+    case EL_TIMEGATE_OPEN:
+      if (!IN_LEV_FIELD(x + dx, y + dy) || !IS_FREE(x + dx, y + dy))
+	return MF_NO_ACTION;
 
-  return(moved);
-}
+      /* automatically move to the next field with double speed */
+      player->programmed_action = move_direction;
+      DOUBLE_PLAYER_SPEED(player);
 
-void TestIfHeroHitsBadThing()
-{
-  int i, killx = JX,killy = JY;
-  static int xy[4][2] =
-  {
-    0,-1,
-    -1,0,
-    +1,0,
-    0,+1
-  };
-  static int harmless[4] =
-  {
-    MV_UP,
-    MV_LEFT,
-    MV_RIGHT,
-    MV_DOWN
-  };
+      PlaySoundLevelElementAction(x, y, element, ACTION_PASSING);
+      break;
 
-  for(i=0;i<4;i++)
-  {
-    int x,y,element;
+    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:
+      if ((dx == -1 &&
+	   element != EL_SP_PORT1_LEFT &&
+	   element != EL_SP_PORT2_LEFT &&
+	   element != EL_SP_PORT_X &&
+	   element != EL_SP_PORT_XY) ||
+	  (dx == +1 &&
+	   element != EL_SP_PORT1_RIGHT &&
+	   element != EL_SP_PORT2_RIGHT &&
+	   element != EL_SP_PORT_X &&
+	   element != EL_SP_PORT_XY) ||
+	  (dy == -1 &&
+	   element != EL_SP_PORT1_UP &&
+	   element != EL_SP_PORT2_UP &&
+	   element != EL_SP_PORT_Y &&
+	   element != EL_SP_PORT_XY) ||
+	  (dy == +1 &&
+	   element != EL_SP_PORT1_DOWN &&
+	   element != EL_SP_PORT2_DOWN &&
+	   element != EL_SP_PORT_Y &&
+	   element != EL_SP_PORT_XY) ||
+	  !IN_LEV_FIELD(x + dx, y + dy) ||
+	  !IS_FREE(x + dx, y + dy))
+	return MF_NO_ACTION;
+
+      /* automatically move to the next field with double speed */
+      player->programmed_action = move_direction;
+      DOUBLE_PLAYER_SPEED(player);
+
+      PlaySoundLevel(x, y, SND_SP_PORT_PASSING);
+      break;
 
-    x = JX+xy[i][0];
-    y = JY+xy[i][1];
-    if (!IN_LEV_FIELD(x,y))
-      continue;
+    case EL_TUBE_ALL:
+    case EL_TUBE_VERTICAL:
+    case EL_TUBE_HORIZONTAL:
+    case EL_TUBE_VERTICAL_LEFT:
+    case EL_TUBE_VERTICAL_RIGHT:
+    case EL_TUBE_HORIZONTAL_UP:
+    case EL_TUBE_HORIZONTAL_DOWN:
+    case EL_TUBE_LEFT_UP:
+    case EL_TUBE_LEFT_DOWN:
+    case EL_TUBE_RIGHT_UP:
+    case EL_TUBE_RIGHT_DOWN:
+      {
+	int i = 0;
+	int tube_enter_directions[][2] =
+	{
+	  { EL_TUBE_ALL,		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 },
+	  { EL_TUBE_VERTICAL_RIGHT,	MV_LEFT            | MV_UP | MV_DOWN },
+	  { EL_TUBE_HORIZONTAL_UP,	MV_LEFT | MV_RIGHT |         MV_DOWN },
+	  { EL_TUBE_HORIZONTAL_DOWN,	MV_LEFT | MV_RIGHT | MV_UP           },
+	  { EL_TUBE_LEFT_UP,			  MV_RIGHT |         MV_DOWN },
+	  { EL_TUBE_LEFT_DOWN,			  MV_RIGHT | MV_UP           },
+	  { EL_TUBE_RIGHT_UP,		MV_LEFT |                    MV_DOWN },
+	  { EL_TUBE_RIGHT_DOWN,		MV_LEFT |            MV_UP           },
+	  { -1,				MV_NO_MOVING                         }
+	};
+
+	while (tube_enter_directions[i][0] != element)
+	{
+	  i++;
+	  if (tube_enter_directions[i][0] == -1)	/* should not happen */
+	    break;
+	}
 
-    element = Feld[x][y];
+	if (!(tube_enter_directions[i][1] & move_direction))
+	  return MF_NO_ACTION;	/* tube has no opening in this direction */
 
-    if (DONT_TOUCH(element))
-    {
-      if (MovDir[x][y]==harmless[i])
-	continue;
+	PlaySoundLevel(x, y, SND_TUBE_PASSING);
+      }
+      break;
 
-      killx = x;
-      killy = y;
+    case EL_EXIT_CLOSED:
+    case EL_SP_EXIT_CLOSED:
+    case EL_EXIT_OPENING:
+      return MF_NO_ACTION;
       break;
-    }
-  }
 
-  if (killx!=JX || killy!=JY)
-    KillHero();
-}
+    case EL_EXIT_OPEN:
+    case EL_SP_EXIT_OPEN:
+      if (mode == DF_SNAP)
+	return MF_NO_ACTION;
 
-void TestIfBadThingHitsHero()
-{
-  TestIfHeroHitsBadThing();
-}
+      if (element == EL_EXIT_OPEN)
+	PlaySoundLevel(x, y, SND_EXIT_PASSING);
+      else
+	PlaySoundLevel(x, y, SND_SP_EXIT_PASSING);
 
-void TestIfBadThingHitsOtherBadThing(int badx, int bady)
-{
-  int i, killx=badx, killy=bady;
-  static int xy[4][2] =
-  {
-    0,-1,
-    -1,0,
-    +1,0,
-    0,+1
-  };
+      break;
 
-  for(i=0;i<4;i++)
-  {
-    int x,y,element;
+    case EL_LAMP:
+      Feld[x][y] = EL_LAMP_ACTIVE;
+      local_player->lights_still_needed--;
+      DrawLevelField(x, y);
+      PlaySoundLevel(x, y, SND_LAMP_ACTIVATING);
+      return MF_ACTION;
+      break;
 
-    x=badx+xy[i][0];
-    y=bady+xy[i][1];
-    if (!IN_LEV_FIELD(x,y))
-      continue;
+    case EL_TIME_ORB_FULL:
+      Feld[x][y] = EL_TIME_ORB_EMPTY;
+      TimeLeft += 10;
+      DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+      DrawLevelField(x, y);
+      PlaySoundStereo(SND_TIME_ORB_FULL_COLLECTING, SOUND_MAX_RIGHT);
+      return MF_ACTION;
+      break;
 
-    element=Feld[x][y];
-    if (IS_AMOEBOID(element) || element==EL_LIFE ||
-	element==EL_AMOEBING ||	element==EL_TROPFEN)
-    {
-      killx=x;
-      killy=y;
+    case EL_SOKOBAN_FIELD_EMPTY:
       break;
-    }
-  }
 
-  if (killx!=badx || killy!=bady)
-    Bang(badx,bady);
-}
+    case EL_SOKOBAN_OBJECT:
+    case EL_SOKOBAN_FIELD_FULL:
+    case EL_SATELLITE:
+    case EL_SP_DISK_YELLOW:
+    case EL_BALLOON:
+      if (mode == DF_SNAP)
+	return MF_NO_ACTION;
 
-void KillHero()
-{
-  if (PLAYER(-1,-1))
-    return;
+      player->Pushing = TRUE;
 
-  if (IS_PFORTE(Feld[JX][JY]))
-    Feld[JX][JY] = EL_LEERRAUM;
+      if (!IN_LEV_FIELD(x+dx, y+dy)
+	  || (!IS_FREE(x+dx, y+dy)
+	      && (Feld[x+dx][y+dy] != EL_SOKOBAN_FIELD_EMPTY
+		  || !IS_SB_ELEMENT(element))))
+	return MF_NO_ACTION;
 
-  PlaySoundLevel(JX,JY,SND_AUTSCH);
-  PlaySoundLevel(JX,JY,SND_LACHEN);
-  Bang(JX,JY);
-  GameOver = TRUE;
-  JX = JY = -1;
-}
+      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;
+      }
 
-int DigField(int x, int y, int mode)
-{
-  int dx = x-JX, dy = y-JY;
-  int element;
-  static long push_delay = 0;
-  static int push_delay_value = 20;
+      if (player->push_delay == 0)
+	player->push_delay = FrameCounter;
+#if 0
+      if (!FrameReached(&player->push_delay, player->push_delay_value) &&
+	  !tape.playing && element != EL_BALLOON)
+	return MF_NO_ACTION;
+#else
+      if (!FrameReached(&player->push_delay, player->push_delay_value) &&
+	  !(tape.playing && tape.file_version < FILE_VERSION_2_0) &&
+	  element != EL_BALLOON)
+	return MF_NO_ACTION;
+#endif
 
-  if (mode==DF_NO_PUSH)
-  {
-    push_delay = 0;
-    return(MF_NO_ACTION);
-  }
+      if (IS_SB_ELEMENT(element))
+      {
+	if (element == EL_SOKOBAN_FIELD_FULL)
+	{
+	  Feld[x][y] = EL_SOKOBAN_FIELD_EMPTY;
+	  local_player->sokobanfields_still_needed++;
+	}
+	else
+	  RemoveField(x, y);
 
-  if (IS_MOVING(x,y))
-    return(MF_NO_ACTION);
+	if (Feld[x+dx][y+dy] == EL_SOKOBAN_FIELD_EMPTY)
+	{
+	  Feld[x+dx][y+dy] = EL_SOKOBAN_FIELD_FULL;
+	  local_player->sokobanfields_still_needed--;
+	  if (element == EL_SOKOBAN_OBJECT)
+	    PlaySoundLevel(x, y, SND_SOKOBAN_FIELD_FILLING);
+	  else
+	    PlaySoundLevel(x, y, SND_SOKOBAN_OBJECT_PUSHING);
+	}
+	else
+	{
+	  Feld[x+dx][y+dy] = EL_SOKOBAN_OBJECT;
+	  if (element == EL_SOKOBAN_FIELD_FULL)
+	    PlaySoundLevel(x, y, SND_SOKOBAN_FIELD_EMPTYING);
+	  else
+	    PlaySoundLevel(x, y, SND_SOKOBAN_OBJECT_PUSHING);
+	}
+      }
+      else
+      {
+	RemoveField(x, y);
+	Feld[x+dx][y+dy] = element;
+	PlaySoundLevelElementAction(x, y, element, ACTION_PUSHING);
+      }
 
-  element = Feld[x][y];
+      player->push_delay_value = (element == EL_BALLOON ? 0 : 2);
+
+      DrawLevelField(x, y);
+      DrawLevelField(x + dx, y + dy);
+
+      if (IS_SB_ELEMENT(element) &&
+	  local_player->sokobanfields_still_needed == 0 &&
+	  game.emulation == EMU_SOKOBAN)
+      {
+	player->LevelSolved = player->GameOver = TRUE;
+	PlaySoundLevel(x, y, SND_SOKOBAN_GAME_SOLVING);
+      }
 
-  switch(element)
-  {
-    case EL_LEERRAUM:
-      CheckMoving = TRUE;
-      break;
-    case EL_ERDREICH:
-      Feld[x][y] = EL_LEERRAUM;
-      CheckMoving = TRUE;
-      break;
-    case EL_EDELSTEIN:
-    case EL_EDELSTEIN2:
-    case EL_EDELSTEIN3:
-      Feld[x][y] = EL_LEERRAUM;
-      CheckMoving = TRUE;
-      if (Gems>0)
-	Gems--;
-      RaiseScore(level.score[SC_EDELSTEIN]);
-      DrawText(DX_EMERALDS,DY_EMERALDS,int2str(Gems,3),FS_SMALL,FC_YELLOW);
-      PlaySoundLevel(x,y,SND_PONG);
-      break;
-    case EL_DIAMANT:
-      Feld[x][y] = EL_LEERRAUM;
-      CheckMoving = TRUE;
-      Gems -= 3;
-      if (Gems<0)
-	Gems=0;
-      RaiseScore(level.score[SC_DIAMANT]);
-      DrawText(DX_EMERALDS,DY_EMERALDS,int2str(Gems,3),FS_SMALL,FC_YELLOW);
-      PlaySoundLevel(x,y,SND_PONG);
-      break;
-    case EL_DYNAMIT_AUS:
-      Feld[x][y] = EL_LEERRAUM;
-      CheckMoving = TRUE;
-      Dynamite++;
-      RaiseScore(level.score[SC_DYNAMIT]);
-      DrawText(DX_DYNAMITE,DY_DYNAMITE,int2str(Dynamite,3),FS_SMALL,FC_YELLOW);
-      PlaySoundLevel(x,y,SND_PONG);
-      break;
-    case EL_DYNABOMB_NR:
-      Feld[x][y] = EL_LEERRAUM;
-      CheckMoving = TRUE;
-      DynaBombCount++;
-      DynaBombsLeft++;
-      RaiseScore(level.score[SC_DYNAMIT]);
-      PlaySoundLevel(x,y,SND_PONG);
-      break;
-    case EL_DYNABOMB_SZ:
-      Feld[x][y] = EL_LEERRAUM;
-      CheckMoving = TRUE;
-      DynaBombSize++;
-      RaiseScore(level.score[SC_DYNAMIT]);
-      PlaySoundLevel(x,y,SND_PONG);
       break;
-    case EL_SCHLUESSEL1:
-    case EL_SCHLUESSEL2:
-    case EL_SCHLUESSEL3:
-    case EL_SCHLUESSEL4:
-    {
-      int key_nr = element-EL_SCHLUESSEL1;
 
-      Feld[x][y] = EL_LEERRAUM;
-      CheckMoving = TRUE;
-      Key[key_nr] = TRUE;
-      RaiseScore(level.score[SC_SCHLUESSEL]);
-      DrawMiniGraphicExtHiRes(drawto,gc,
-			      DX_KEYS+key_nr*MINI_TILEX,DY_KEYS,
-			      GFX_SCHLUESSEL1+key_nr);
-      DrawMiniGraphicExtHiRes(window,gc,
-			      DX_KEYS+key_nr*MINI_TILEX,DY_KEYS,
-			      GFX_SCHLUESSEL1+key_nr);
-      PlaySoundLevel(x,y,SND_PONG);
-      break;
-    }
-    case EL_ABLENK_AUS:
-      Feld[x][y] = EL_ABLENK_EIN;
-      CheckExploding = TRUE;
-      ZX=x;
-      ZY=y;
-      DrawLevelField(x,y);
-      return(MF_ACTION);
-      break;
-    case EL_FELSBROCKEN:
-    case EL_BOMBE:
-    case EL_KOKOSNUSS:
-    case EL_ZEIT_LEER:
-      if (mode==DF_SNAP)
-	return(MF_NO_ACTION);
-      if (dy || !IN_LEV_FIELD(x+dx,y+dy) || Feld[x+dx][y+dy]!=EL_LEERRAUM)
-	return(MF_NO_ACTION);
-
-      if (Counter() > push_delay+4*push_delay_value)
-	push_delay = Counter();
-      if (!DelayReached(&push_delay,push_delay_value) && !tape.playing)
-	return(MF_NO_ACTION);
-
-      Feld[x][y] = EL_LEERRAUM;
-      Feld[x+dx][y+dy] = element;
-      push_delay_value = 10+RND(30);
-      CheckMoving = TRUE;
-      DrawLevelField(x+dx,y+dy);
-      if (element==EL_FELSBROCKEN)
-	PlaySoundLevel(x+dx,y+dy,SND_PUSCH);
-      else if (element==EL_KOKOSNUSS)
-	PlaySoundLevel(x+dx,y+dy,SND_KNURK);
-      else
-	PlaySoundLevel(x+dx,y+dy,SND_KLOPF);
-      break;
-    case EL_PFORTE1:
-    case EL_PFORTE2:
-    case EL_PFORTE3:
-    case EL_PFORTE4:
-      if (!Key[element-EL_PFORTE1])
-	return(MF_NO_ACTION);
-      break;
-    case EL_PFORTE1X:
-    case EL_PFORTE2X:
-    case EL_PFORTE3X:
-    case EL_PFORTE4X:
-      if (!Key[element-EL_PFORTE1X])
-	return(MF_NO_ACTION);
-      break;
-    case EL_AUSGANG_ZU:
-    case EL_AUSGANG_ACT:
-      /* Tür ist (noch) nicht offen! */
-      return(MF_NO_ACTION);
-      break;
-    case EL_AUSGANG_AUF:
-/*
-      if (mode==DF_SNAP || Gems>0)
-	return(MF_NO_ACTION);
-*/
-      if (mode==DF_SNAP)
-	return(MF_NO_ACTION);
-      LevelSolved = GameOver = TRUE;
-      PlaySoundLevel(x,y,SND_BUING);
-      break;
-    case EL_BIRNE_AUS:
-      Feld[x][y] = EL_BIRNE_EIN;
-      DrawLevelField(x,y);
-      PlaySoundLevel(x,y,SND_DENG);
-      return(MF_ACTION);
-      break;
-    case EL_ZEIT_VOLL:
-      Feld[x][y] = EL_ZEIT_LEER;
-      DrawLevelField(x,y);
-      PlaySoundStereo(SND_GONG,PSND_MAX_RIGHT);
-      return(MF_ACTION);
+    case EL_PENGUIN:
+    case EL_PIG:
+    case EL_DRAGON:
       break;
+
     default:
-      return(MF_NO_ACTION);
-      break;
+      return MF_NO_ACTION;
   }
-  push_delay=0;
-  return(MF_MOVING);
+
+  player->push_delay = 0;
+
+  return MF_MOVING;
 }
 
-BOOL SnapField(int dx, int dy)
+boolean SnapField(struct PlayerInfo *player, int dx, int dy)
 {
-  int x = JX+dx, y = JY+dy;
-  static int snapped = FALSE;
+  int jx = player->jx, jy = player->jy;
+  int x = jx + dx, y = jy + dy;
+
+  if (!player->active || !IN_LEV_FIELD(x, y))
+    return FALSE;
 
-  if (GameOver || !IN_LEV_FIELD(x,y))
-    return(FALSE);
   if (dx && dy)
-    return(FALSE);
+    return FALSE;
+
   if (!dx && !dy)
   {
-    snapped = FALSE;
-    return(FALSE);
+    if (player->MovPos == 0)
+      player->Pushing = FALSE;
+
+    player->snapped = FALSE;
+    return FALSE;
   }
-  if (snapped)
-    return(FALSE);
 
-  if (!DigField(x,y,DF_SNAP))
-    return(FALSE);
+  if (player->snapped)
+    return FALSE;
+
+  player->MovDir = (dx < 0 ? MV_LEFT :
+		    dx > 0 ? MV_RIGHT :
+		    dy < 0 ? MV_UP :
+		    dy > 0 ? MV_DOWN :	MV_NO_MOVING);
 
-  snapped = TRUE;
-  DrawLevelField(x,y);
+  if (!DigField(player, x, y, 0, 0, DF_SNAP))
+    return FALSE;
+
+  player->snapped = TRUE;
+  DrawLevelField(x, y);
   BackToFront();
 
-  return(TRUE);
+  return TRUE;
 }
 
-BOOL PlaceBomb(void)
+boolean PlaceBomb(struct PlayerInfo *player)
 {
-  if ((Dynamite==0 && DynaBombsLeft==0) ||
-      Feld[JX][JY]==EL_DYNAMIT || Feld[JX][JY]==EL_DYNABOMB)
-    return(FALSE);
+  int jx = player->jx, jy = player->jy;
+  int element;
+
+  if (!player->active || player->MovPos)
+    return FALSE;
+
+  element = Feld[jx][jy];
 
-  if (Feld[JX][JY]!=EL_LEERRAUM)
-    Store[JX][JY] = Feld[JX][JY];
+  if ((player->dynamite == 0 && player->dynabombs_left == 0) ||
+      IS_ACTIVE_BOMB(element) || element == EL_EXPLOSION)
+    return FALSE;
 
-  if (Dynamite)
+  if (element != EL_EMPTY)
+    Store[jx][jy] = element;
+
+  MovDelay[jx][jy] = 96;
+  GfxFrame[jx][jy] = 0;
+
+  if (player->dynamite)
   {
-    Feld[JX][JY] = EL_DYNAMIT;
-    MovDelay[JX][JY] = 48;
-    Dynamite--;
-    DrawText(DX_DYNAMITE,DY_DYNAMITE,int2str(Dynamite,3),FS_SMALL,FC_YELLOW);
-    DrawGraphicThruMask(SCROLLX(JX),SCROLLY(JY),GFX_DYNAMIT);
+    Feld[jx][jy] = EL_DYNAMITE_ACTIVE;
+    player->dynamite--;
+
+    DrawText(DX_DYNAMITE, DY_DYNAMITE, int2str(local_player->dynamite, 3),
+	     FS_SMALL, FC_YELLOW);
+    if (IN_SCR_FIELD(SCREENX(jx), SCREENY(jy)))
+    {
+      if (game.emulation == EMU_SUPAPLEX)
+	DrawGraphic(SCREENX(jx), SCREENY(jy), IMG_SP_DISK_RED, 0);
+      else
+	DrawGraphicThruMask(SCREENX(jx), SCREENY(jy), IMG_DYNAMITE_ACTIVE, 0);
+    }
+
+    PlaySoundLevel(jx, jy, SND_DYNAMITE_DROPPING);
   }
   else
   {
-    Feld[JX][JY] = EL_DYNABOMB;
-    MovDelay[JX][JY] = 48;
-    DynaBombsLeft--;
+    Feld[jx][jy] =
+      EL_DYNABOMB_PLAYER1_ACTIVE + (player->element_nr - EL_PLAYER1);
+    player->dynabombs_left--;
 
-    /* ändern, wenn Maske für DYNABOMB vorliegt! */
+    if (IN_SCR_FIELD(SCREENX(jx), SCREENY(jy)))
+      DrawGraphicThruMask(SCREENX(jx), SCREENY(jy), el2img(Feld[jx][jy]), 0);
 
-    DrawGraphicThruMask(SCROLLX(JX),SCROLLY(JY),GFX_DYNAMIT);
+    PlaySoundLevel(jx, jy, SND_DYNABOMB_DROPPING);
   }
 
-  CheckExploding = TRUE;
-  return(TRUE);
+  return TRUE;
 }
 
-void PlaySoundLevel(int x, int y, int sound_nr)
+static void PlaySoundLevel(int x, int y, int nr)
 {
-  int sx = SCROLLX(x), sy = SCROLLY(y);
-  int volume, stereo;
-
-  if (!sound_loops_on && IS_LOOP_SOUND(sound_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;
+  int type = (IS_LOOP_SOUND(nr) ? SND_CTRL_PLAY_LOOP : SND_CTRL_PLAY_SOUND);
+
+  if ((!setup.sound_simple && !IS_LOOP_SOUND(nr)) ||
+      (!setup.sound_loops && IS_LOOP_SOUND(nr)))
     return;
 
-  if (!IN_LEV_FIELD(x,y))
+  if (!IN_LEV_FIELD(x, y) ||
+      sx < -max_distance || sx >= SCR_FIELDX + max_distance ||
+      sy < -max_distance || sy >= SCR_FIELDY + max_distance)
     return;
 
-  volume = PSND_MAX_VOLUME;
-  stereo = (sx-SCR_FIELDX/2)*12;
+  volume = SOUND_MAX_VOLUME;
 
-  if (!IN_SCR_FIELD(sx,sy))
+  if (!IN_SCR_FIELD(sx, sy))
   {
-    if (sx<0 || sx>=SCR_FIELDX)
-      volume = PSND_MAX_VOLUME - 2*ABS(sx-SCR_FIELDX/2);
-    else
-      volume = PSND_MAX_VOLUME - 2*ABS(sy-SCR_FIELDY/2);
-  }
+    int dx = ABS(sx - SCR_FIELDX / 2) - SCR_FIELDX / 2;
+    int dy = ABS(sy - SCR_FIELDY / 2) - SCR_FIELDY / 2;
 
-  PlaySoundExt(sound_nr, volume, stereo, PSND_NO_LOOP);
-}
+    volume -= volume * (dx > dy ? dx : dy) / max_distance;
+  }
 
-void RaiseScore(int value)
-{
-  Score += value;
-  DrawText(DX_SCORE,DY_SCORE,int2str(Score,5),FS_SMALL,FC_YELLOW);
-  BackToFront();
-}
+  stereo_position = (SOUND_MAX_LEFT +
+		     (sx + max_distance) * SOUND_MAX_LEFT2RIGHT /
+		     (SCR_FIELDX + 2 * max_distance));
 
-void TapeInitRecording()
-{
-  time_t zeit1 = time(NULL);
-  struct tm *zeit2 = localtime(&zeit1);
+  if (IS_LOOP_SOUND(nr))
+  {
+    /* This assures that quieter loop sounds do not overwrite louder ones,
+       while restarting sound volume comparison with each new game frame. */
 
-  if (tape.recording || tape.playing)
-    return;
+    if (loop_sound_volume[nr] > volume && loop_sound_frame[nr] == FrameCounter)
+      return;
 
-  tape.level_nr = level_nr;
-  tape.recording = TRUE;
-  tape.pausing = TRUE;
-  tape.date =
-    10000*(zeit2->tm_year%100) + 100*zeit2->tm_mon + zeit2->tm_mday;
+    loop_sound_volume[nr] = volume;
+    loop_sound_frame[nr] = FrameCounter;
+  }
 
-  DrawVideoDisplay(VIDEO_STATE_REC_ON | VIDEO_STATE_PAUSE_ON,0);
-  DrawVideoDisplay(VIDEO_STATE_DATE_ON,tape.date);
-  DrawVideoDisplay(VIDEO_STATE_TIME_ON,0);
+  PlaySoundExt(nr, volume, stereo_position, type);
 }
 
-void TapeStartRecording()
+static void PlaySoundLevelNearest(int x, int y, int sound_action)
 {
-  tape.length = 0;
-  tape.counter = 0;
-  tape.pos[tape.counter].delay = 0;
-  tape.recording = TRUE;
-  tape.playing = FALSE;
-  tape.pausing = FALSE;
-  tape.random_seed = InitRND(NEW_RANDOMIZE);
-  DrawVideoDisplay(VIDEO_STATE_REC_ON | VIDEO_STATE_PAUSE_OFF,0);
+  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);
 }
 
-void TapeStopRecording()
+static void PlaySoundLevelAction(int x, int y, int sound_action)
 {
-  if (!tape.recording)
-    return;
+  PlaySoundLevelElementAction(x, y, Feld[x][y], sound_action);
+}
 
-  tape.length = tape.counter;
-  tape.recording = FALSE;
-  tape.pausing = FALSE;
-  DrawVideoDisplay(VIDEO_STATE_REC_OFF,0);
+static void PlaySoundLevelElementAction(int x, int y, int element,
+					int sound_action)
+{
+  int sound_effect = element_info[element].sound[sound_action];
 
-  master_tape = tape;
+  if (sound_effect != SND_UNDEFINED)
+    PlaySoundLevel(x, y, sound_effect);
 }
 
-void TapeRecordAction(int joy)
+void RaiseScore(int value)
 {
-  if (!tape.recording || tape.pausing)
-    return;
+  local_player->score += value;
+  DrawText(DX_SCORE, DY_SCORE, int2str(local_player->score, 5),
+	   FS_SMALL, FC_YELLOW);
+}
 
-  if (tape.counter>=MAX_TAPELEN-1)
+void RaiseScoreElement(int element)
+{
+  switch(element)
   {
-    TapeStopRecording();
-    return;
+    case EL_EMERALD:
+    case EL_BD_DIAMOND:
+    case EL_EMERALD_YELLOW:
+    case EL_EMERALD_RED:
+    case EL_EMERALD_PURPLE:
+      RaiseScore(level.score[SC_EDELSTEIN]);
+      break;
+    case EL_DIAMOND:
+      RaiseScore(level.score[SC_DIAMANT]);
+      break;
+    case EL_BUG:
+    case EL_BD_BUTTERFLY:
+      RaiseScore(level.score[SC_KAEFER]);
+      break;
+    case EL_SPACESHIP:
+    case EL_BD_FIREFLY:
+      RaiseScore(level.score[SC_FLIEGER]);
+      break;
+    case EL_YAMYAM:
+    case EL_DARK_YAMYAM:
+      RaiseScore(level.score[SC_MAMPFER]);
+      break;
+    case EL_ROBOT:
+      RaiseScore(level.score[SC_ROBOT]);
+      break;
+    case EL_PACMAN:
+      RaiseScore(level.score[SC_PACMAN]);
+      break;
+    case EL_NUT:
+      RaiseScore(level.score[SC_KOKOSNUSS]);
+      break;
+    case EL_DYNAMITE:
+      RaiseScore(level.score[SC_DYNAMIT]);
+      break;
+    case EL_KEY1:
+    case EL_KEY2:
+    case EL_KEY3:
+    case EL_KEY4:
+      RaiseScore(level.score[SC_SCHLUESSEL]);
+      break;
+    default:
+      break;
   }
+}
 
-  if (joy)
+void RequestQuitGame(boolean ask_if_really_quit)
+{
+  if (AllPlayersGone ||
+      !ask_if_really_quit ||
+      level_editor_test_game ||
+      Request("Do you really want to quit the game ?",
+	      REQ_ASK | REQ_STAY_CLOSED))
+  {
+#if defined(PLATFORM_UNIX)
+    if (options.network)
+      SendToServer_StopPlaying();
+    else
+#endif
+    {
+      game_status = MAINMENU;
+      DrawMainMenu();
+    }
+  }
+  else
   {
-    tape.pos[tape.counter].joystickdata = joy;
-    tape.counter++;
-    tape.pos[tape.counter].delay = 0;
+    OpenDoor(DOOR_OPEN_1 | DOOR_COPY_BACK);
   }
 }
 
-void TapeRecordDelay()
-{
-  if (!tape.recording || tape.pausing)
-    return;
 
-  if (tape.counter>=MAX_TAPELEN)
-  {
-    TapeStopRecording();
-    return;
-  }
+/* ---------- new game button stuff ---------------------------------------- */
+
+/* graphic position values for game buttons */
+#define GAME_BUTTON_XSIZE	30
+#define GAME_BUTTON_YSIZE	30
+#define GAME_BUTTON_XPOS	5
+#define GAME_BUTTON_YPOS	215
+#define SOUND_BUTTON_XPOS	5
+#define SOUND_BUTTON_YPOS	(GAME_BUTTON_YPOS + GAME_BUTTON_YSIZE)
 
-  tape.pos[tape.counter].delay++;
+#define GAME_BUTTON_STOP_XPOS	(GAME_BUTTON_XPOS + 0 * GAME_BUTTON_XSIZE)
+#define GAME_BUTTON_PAUSE_XPOS	(GAME_BUTTON_XPOS + 1 * GAME_BUTTON_XSIZE)
+#define GAME_BUTTON_PLAY_XPOS	(GAME_BUTTON_XPOS + 2 * GAME_BUTTON_XSIZE)
+#define SOUND_BUTTON_MUSIC_XPOS	(SOUND_BUTTON_XPOS + 0 * GAME_BUTTON_XSIZE)
+#define SOUND_BUTTON_LOOPS_XPOS	(SOUND_BUTTON_XPOS + 1 * GAME_BUTTON_XSIZE)
+#define SOUND_BUTTON_SIMPLE_XPOS (SOUND_BUTTON_XPOS + 2 * GAME_BUTTON_XSIZE)
 
-  if (tape.pos[tape.counter].delay>=255)
+static struct
+{
+  int x, y;
+  int gadget_id;
+  char *infotext;
+} gamebutton_info[NUM_GAME_BUTTONS] =
+{
   {
-    tape.pos[tape.counter].joystickdata = 0;
-    tape.counter++;
-    tape.pos[tape.counter].delay = 0;
+    GAME_BUTTON_STOP_XPOS,	GAME_BUTTON_YPOS,
+    GAME_CTRL_ID_STOP,
+    "stop game"
+  },
+  {
+    GAME_BUTTON_PAUSE_XPOS,	GAME_BUTTON_YPOS,
+    GAME_CTRL_ID_PAUSE,
+    "pause game"
+  },
+  {
+    GAME_BUTTON_PLAY_XPOS,	GAME_BUTTON_YPOS,
+    GAME_CTRL_ID_PLAY,
+    "play game"
+  },
+  {
+    SOUND_BUTTON_MUSIC_XPOS,	SOUND_BUTTON_YPOS,
+    SOUND_CTRL_ID_MUSIC,
+    "background music on/off"
+  },
+  {
+    SOUND_BUTTON_LOOPS_XPOS,	SOUND_BUTTON_YPOS,
+    SOUND_CTRL_ID_LOOPS,
+    "sound loops on/off"
+  },
+  {
+    SOUND_BUTTON_SIMPLE_XPOS,	SOUND_BUTTON_YPOS,
+    SOUND_CTRL_ID_SIMPLE,
+    "normal sounds on/off"
   }
-}
+};
 
-void TapeTogglePause()
+void CreateGameButtons()
 {
-  if (!tape.recording && !tape.playing)
-    return;
+  int i;
 
-  if (tape.pausing)
-  {
-    tape.pausing = FALSE;
-    DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF,0);
-    if (game_status==MAINMENU)
-      HandleMainMenu(SX+16,SY+7*32+16,0,0,MB_MENU_CHOICE);
-  }
-  else
+  for (i=0; i<NUM_GAME_BUTTONS; i++)
   {
-    tape.pausing = TRUE;
-    DrawVideoDisplay(VIDEO_STATE_PAUSE_ON,0);
+    Bitmap *gd_bitmap = graphic_info[IMG_GLOBAL_DOOR].bitmap;
+    struct GadgetInfo *gi;
+    int button_type;
+    boolean checked;
+    unsigned long event_mask;
+    int gd_xoffset, gd_yoffset;
+    int gd_x1, gd_x2, gd_y1, gd_y2;
+    int id = i;
+
+    gd_xoffset = gamebutton_info[i].x;
+    gd_yoffset = gamebutton_info[i].y;
+    gd_x1 = DOOR_GFX_PAGEX4 + gd_xoffset;
+    gd_x2 = DOOR_GFX_PAGEX3 + gd_xoffset;
+
+    if (id == GAME_CTRL_ID_STOP ||
+	id == GAME_CTRL_ID_PAUSE ||
+	id == GAME_CTRL_ID_PLAY)
+    {
+      button_type = GD_TYPE_NORMAL_BUTTON;
+      checked = FALSE;
+      event_mask = GD_EVENT_RELEASED;
+      gd_y1  = DOOR_GFX_PAGEY1 + gd_yoffset - GAME_BUTTON_YSIZE;
+      gd_y2  = DOOR_GFX_PAGEY1 + gd_yoffset - GAME_BUTTON_YSIZE;
+    }
+    else
+    {
+      button_type = GD_TYPE_CHECK_BUTTON;
+      checked =
+	((id == SOUND_CTRL_ID_MUSIC && setup.sound_music) ||
+	 (id == SOUND_CTRL_ID_LOOPS && setup.sound_loops) ||
+	 (id == SOUND_CTRL_ID_SIMPLE && setup.sound_simple) ? TRUE : FALSE);
+      event_mask = GD_EVENT_PRESSED;
+      gd_y1  = DOOR_GFX_PAGEY1 + gd_yoffset;
+      gd_y2  = DOOR_GFX_PAGEY1 + gd_yoffset - GAME_BUTTON_YSIZE;
+    }
+
+    gi = CreateGadget(GDI_CUSTOM_ID, id,
+		      GDI_INFO_TEXT, gamebutton_info[i].infotext,
+		      GDI_X, DX + gd_xoffset,
+		      GDI_Y, DY + gd_yoffset,
+		      GDI_WIDTH, GAME_BUTTON_XSIZE,
+		      GDI_HEIGHT, GAME_BUTTON_YSIZE,
+		      GDI_TYPE, button_type,
+		      GDI_STATE, GD_BUTTON_UNPRESSED,
+		      GDI_CHECKED, checked,
+		      GDI_DESIGN_UNPRESSED, gd_bitmap, gd_x1, gd_y1,
+		      GDI_DESIGN_PRESSED, gd_bitmap, gd_x2, gd_y1,
+		      GDI_ALT_DESIGN_UNPRESSED, gd_bitmap, gd_x1, gd_y2,
+		      GDI_ALT_DESIGN_PRESSED, gd_bitmap, gd_x2, gd_y2,
+		      GDI_EVENT_MASK, event_mask,
+		      GDI_CALLBACK_ACTION, HandleGameButtons,
+		      GDI_END);
+
+    if (gi == NULL)
+      Error(ERR_EXIT, "cannot create gadget");
+
+    game_gadget[id] = gi;
   }
 }
 
-void TapeInitPlaying()
+void FreeGameButtons()
 {
-  if (tape.recording || tape.playing || TAPE_IS_EMPTY(tape))
-    return;
+  int i;
 
-  tape.playing = TRUE;
-  tape.pausing = TRUE;
-  DrawVideoDisplay(VIDEO_STATE_PLAY_ON | VIDEO_STATE_PAUSE_ON,0);
-  DrawVideoDisplay(VIDEO_STATE_DATE_ON,tape.date);
-  DrawVideoDisplay(VIDEO_STATE_TIME_ON,0);
+  for (i=0; i<NUM_GAME_BUTTONS; i++)
+    FreeGadget(game_gadget[i]);
 }
 
-void TapeStartPlaying()
+static void MapGameButtons()
 {
-  tape = master_tape;
+  int i;
 
-  tape.counter = 0;
-  tape.recording = FALSE;
-  tape.playing = TRUE;
-  tape.pausing = FALSE;
-  InitRND(tape.random_seed);
-  DrawVideoDisplay(VIDEO_STATE_PLAY_ON | VIDEO_STATE_PAUSE_OFF,0);
+  for (i=0; i<NUM_GAME_BUTTONS; i++)
+    MapGadget(game_gadget[i]);
 }
 
-void TapeStopPlaying()
+void UnmapGameButtons()
 {
-  if (!tape.playing)
-    return;
+  int i;
 
-  tape.playing = FALSE;
-  tape.pausing = FALSE;
-  DrawVideoDisplay(VIDEO_STATE_PLAY_OFF,0);
+  for (i=0; i<NUM_GAME_BUTTONS; i++)
+    UnmapGadget(game_gadget[i]);
 }
 
-int TapePlayAction()
+static void HandleGameButtons(struct GadgetInfo *gi)
 {
-  if (!tape.playing || tape.pausing)
-    return(0);
+  int id = gi->custom_id;
 
-  if (tape.counter>=tape.length)
-  {
-    TapeStopPlaying();
-    return(0);
-  }
+  if (game_status != PLAYING)
+    return;
 
-  if (!tape.pos[tape.counter].delay)
+  switch (id)
   {
-    tape.counter++;
-    return(tape.pos[tape.counter-1].joystickdata);
-  }
-  else
-    return(0);
-}
+    case GAME_CTRL_ID_STOP:
+      RequestQuitGame(TRUE);
+      break;
 
-BOOL TapePlayDelay()
-{
-  if (!tape.playing || tape.pausing)
-    return(0);
+    case GAME_CTRL_ID_PAUSE:
+      if (options.network)
+      {
+#if defined(PLATFORM_UNIX)
+	if (tape.pausing)
+	  SendToServer_ContinuePlaying();
+	else
+	  SendToServer_PausePlaying();
+#endif
+      }
+      else
+	TapeTogglePause(TAPE_TOGGLE_MANUAL);
+      break;
 
-  if (tape.counter>=tape.length)
-  {
-    TapeStopPlaying();
-    return(TRUE);
-  }
+    case GAME_CTRL_ID_PLAY:
+      if (tape.pausing)
+      {
+#if defined(PLATFORM_UNIX)
+	if (options.network)
+	  SendToServer_ContinuePlaying();
+	else
+#endif
+	{
+	  tape.pausing = FALSE;
+	  DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF,0);
+	}
+      }
+      break;
 
-  if (tape.pos[tape.counter].delay)
-  {
-    tape.pos[tape.counter].delay--;
-    return(TRUE);
-  }
-  else
-    return(FALSE);
-}
+    case SOUND_CTRL_ID_MUSIC:
+      if (setup.sound_music)
+      { 
+	setup.sound_music = FALSE;
+	FadeMusic();
+      }
+      else if (audio.music_available)
+      { 
+	setup.sound = setup.sound_music = TRUE;
+	PlayMusic(level_nr);
+      }
+      break;
 
-void TapeStop()
-{
-  TapeStopRecording();
-  TapeStopPlaying();
-  DrawVideoDisplay(VIDEO_ALL_OFF,0);
-  if (tape.date && tape.length)
-  {
-    DrawVideoDisplay(VIDEO_STATE_DATE_ON,tape.date);
-    DrawVideoDisplay(VIDEO_STATE_TIME_ON,0);
-  }
-}
+    case SOUND_CTRL_ID_LOOPS:
+      if (setup.sound_loops)
+	setup.sound_loops = FALSE;
+      else if (audio.loops_available)
+	setup.sound = setup.sound_loops = TRUE;
+      break;
 
-void TapeErase()
-{
-  tape.length = 0;
+    case SOUND_CTRL_ID_SIMPLE:
+      if (setup.sound_simple)
+	setup.sound_simple = FALSE;
+      else if (audio.sound_available)
+	setup.sound = setup.sound_simple = TRUE;
+      break;
+
+    default:
+      break;
+  }
 }