X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fgame.c;h=e69b1e6182af1d54529f3bfb883cc2d9d0851816;hb=667288cc3f60989bfc84ac50bb69dae0c7bb5b22;hp=26cc84cc2a8a61d0e95a9cd347f74368a549ebff;hpb=0918c3eb2f6219a8cc72aa85bd9c4889788dd474;p=rocksndiamonds.git

diff --git a/src/game.c b/src/game.c
index 26cc84cc..e69b1e61 100644
--- a/src/game.c
+++ b/src/game.c
@@ -99,6 +99,62 @@
 /* to control special behaviour of certain game elements */
 int game_emulation = EMU_NONE;
 
+
+
+
+#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)
+    {
+      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++ * Frame[x][y];
+    checksum += mult++ * AmoebaNr[x][y];
+    checksum += mult++ * JustHit[x][y];
+    checksum += mult++ * Stop[x][y];
+    */
+  }
+
+  if (counter == 3 && first_game)
+    first_game = FALSE;
+
+  return checksum;
+}
+#endif
+#endif
+
+
+
+
 void GetPlayerConfig()
 {
   if (sound_status == SOUND_OFF)
@@ -115,6 +171,138 @@ void GetPlayerConfig()
   InitJoysticks();
 }
 
+static void InitField(int x, int y, boolean init_game)
+{
+  switch (Feld[x][y])
+  {
+    case EL_SPIELFIGUR:
+      if (init_game)
+	Feld[x][y] = EL_SPIELER1;
+      /* no break! */
+    case EL_SPIELER1:
+    case EL_SPIELER2:
+    case EL_SPIELER3:
+    case EL_SPIELER4:
+      if (init_game)
+      {
+	struct PlayerInfo *player = &stored_player[Feld[x][y] - EL_SPIELER1];
+	int jx = player->jx, jy = player->jy;
+
+	player->present = TRUE;
+
+	/*
+	if (!network_playing || player->connected)
+	*/
+
+	if (!options.network || player->connected)
+	{
+	  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.verbose)
+	  {
+	    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_LEERRAUM;
+	player->jx = player->last_jx = x;
+	player->jy = player->last_jy = y;
+      }
+      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_BUTTERFLY_R:
+    case EL_BUTTERFLY_O:
+    case EL_BUTTERFLY_L:
+    case EL_BUTTERFLY_U:
+    case EL_BUTTERFLY:
+    case EL_FIREFLY_R:
+    case EL_FIREFLY_O:
+    case EL_FIREFLY_L:
+    case EL_FIREFLY_U:
+    case EL_FIREFLY:
+    case EL_PACMAN_R:
+    case EL_PACMAN_O:
+    case EL_PACMAN_L:
+    case EL_PACMAN_U:
+    case EL_MAMPFER:
+    case EL_MAMPFER2:
+    case EL_ROBOT:
+    case EL_PACMAN:
+      InitMovDir(x, y);
+      break;
+
+    case EL_AMOEBE_VOLL:
+    case EL_AMOEBE_BD:
+      InitAmoebaNr(x, y);
+      break;
+
+    case EL_TROPFEN:
+      if (y == lev_fieldy - 1)
+      {
+	Feld[x][y] = EL_AMOEBING;
+	Store[x][y] = EL_AMOEBE_NASS;
+      }
+      break;
+
+    case EL_DYNAMIT:
+      MovDelay[x][y] = 96;
+      break;
+
+    case EL_BIRNE_AUS:
+      local_player->lights_still_needed++;
+      break;
+
+    case EL_SOKOBAN_FELD_LEER:
+      local_player->sokobanfields_still_needed++;
+      break;
+
+    case EL_MAULWURF:
+    case EL_PINGUIN:
+      local_player->friends_still_needed++;
+      break;
+
+    case EL_SCHWEIN:
+    case EL_DRACHE:
+      MovDir[x][y] = 1 << RND(4);
+      break;
+
+    default:
+      break;
+  }
+}
+
 void InitGame()
 {
   int i, j, x, y;
@@ -201,7 +389,20 @@ void InitGame()
   ScreenMovPos = 0;
   ScreenGfxPos = 0;
 
-  AllPlayersGone = SiebAktiv = FALSE;
+  if (level.high_speed)
+  {
+    MoveSpeed = 4;
+    ScrollStepSize = TILEX/4;
+  }
+  else
+  {
+    MoveSpeed = 8;
+    ScrollStepSize = TILEX/8;
+  }
+
+  AllPlayersGone = FALSE;
+  SiebAktiv = FALSE;
+  SiebCount = 0;
 
   for (i=0; i<MAX_NUM_AMOEBA; i++)
     AmoebaCnt[i] = AmoebaCnt2[i] = 0;
@@ -227,123 +428,7 @@ void InitGame()
     if (emulate_sb && !IS_SB_ELEMENT(Feld[x][y]))
       emulate_sb = FALSE;
 
-    switch (Feld[x][y])
-    {
-      case EL_SPIELFIGUR:
-	Feld[x][y] = EL_SPIELER1;
-	/* no break! */
-      case EL_SPIELER1:
-      case EL_SPIELER2:
-      case EL_SPIELER3:
-      case EL_SPIELER4:
-      {
-	struct PlayerInfo *player = &stored_player[Feld[x][y] - EL_SPIELER1];
-	int jx = player->jx, jy = player->jy;
-
-	player->present = TRUE;
-
-	/*
-	if (!network_playing || player->connected)
-	*/
-
-	if (!options.network || player->connected)
-	{
-	  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.verbose)
-	  {
-	    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_LEERRAUM;
-	player->jx = player->last_jx = x;
-	player->jy = player->last_jy = y;
-
-	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_BUTTERFLY_R:
-      case EL_BUTTERFLY_O:
-      case EL_BUTTERFLY_L:
-      case EL_BUTTERFLY_U:
-      case EL_BUTTERFLY:
-      case EL_FIREFLY_R:
-      case EL_FIREFLY_O:
-      case EL_FIREFLY_L:
-      case EL_FIREFLY_U:
-      case EL_FIREFLY:
-      case EL_PACMAN_R:
-      case EL_PACMAN_O:
-      case EL_PACMAN_L:
-      case EL_PACMAN_U:
-      case EL_MAMPFER:
-      case EL_MAMPFER2:
-      case EL_ROBOT:
-      case EL_PACMAN:
-	InitMovDir(x, y);
-	break;
-      case EL_AMOEBE_VOLL:
-      case EL_AMOEBE_BD:
-	InitAmoebaNr(x, y);
-	break;
-      case EL_TROPFEN:
-	if (y == lev_fieldy - 1)
-	{
-	  Feld[x][y] = EL_AMOEBING;
-	  Store[x][y] = EL_AMOEBE_NASS;
-	}
-	break;
-      case EL_DYNAMIT:
-	MovDelay[x][y] = 96;
-	break;
-      case EL_BIRNE_AUS:
-	local_player->lights_still_needed++;
-	break;
-      case EL_SOKOBAN_FELD_LEER:
-	local_player->sokobanfields_still_needed++;
-	break;
-      case EL_MAULWURF:
-      case EL_PINGUIN:
-	local_player->friends_still_needed++;
-	break;
-      case EL_SCHWEIN:
-      case EL_DRACHE:
-	MovDir[x][y] = 1 << RND(4);
-	break;
-      default:
-	break;
-    }
+    InitField(x, y, TRUE);
   }
 
   /* check if any connected player was not found in playfield */
@@ -997,7 +1082,7 @@ void Explode(int ex, int ey, int phase, int mode)
     }
 
     if (center_element == EL_MAMPFER)
-      MampferNr = (MampferNr+1) % 4;
+      MampferNr = (MampferNr + 1) % MampferMax;
 
     return;
   }
@@ -1033,6 +1118,7 @@ void Explode(int ex, int ey, int phase, int mode)
     element = Feld[x][y] = Store[x][y];
     Store[x][y] = Store2[x][y] = 0;
     MovDir[x][y] = MovPos[x][y] = MovDelay[x][y] = 0;
+    InitField(x, y, FALSE);
     if (CAN_MOVE(element) || COULD_MOVE(element))
       InitMovDir(x, y);
     DrawLevelField(x, y);
@@ -1217,8 +1303,22 @@ void Impact(int x, int y)
   if (!lastline && object_hit)		/* check which object was hit */
   {
     if (CAN_CHANGE(element) && 
-	(smashed == EL_SIEB_LEER || smashed == EL_SIEB2_LEER) && !SiebAktiv)
-      SiebAktiv = level.dauer_sieb * FRAMES_PER_SECOND;
+	(smashed == EL_SIEB_INAKTIV || smashed == EL_SIEB2_INAKTIV))
+    {
+      int x, y;
+      int activated_magic_wall =
+	(smashed == EL_SIEB_INAKTIV ? EL_SIEB_LEER : EL_SIEB2_LEER);
+
+      /* activate magic wall / mill */
+
+      for (y=0; y<lev_fieldy; y++)
+	for (x=0; x<lev_fieldx; x++)
+	  if (Feld[x][y] == smashed)
+	    Feld[x][y] = activated_magic_wall;
+
+      SiebCount = level.dauer_sieb * FRAMES_PER_SECOND;
+      SiebAktiv = TRUE;
+    }
 
     if (IS_PLAYER(x, y+1))
     {
@@ -1811,7 +1911,7 @@ void StartMoving(int x, int y)
 	Store2[x][y] = 0;
       }
     }
-    else if (SiebAktiv && CAN_CHANGE(element) &&
+    else if (CAN_CHANGE(element) &&
 	     (Feld[x][y+1] == EL_SIEB_LEER || Feld[x][y+1] == EL_SIEB2_LEER))
     {
       InitMovingField(x, y, MV_DOWN);
@@ -2245,13 +2345,13 @@ int AmoebeNachbarNr(int ax, int ay)
 
   for (i=0; i<4; i++)
   {
-    int x = ax+xy[i%4][0];
-    int y = ay+xy[i%4][1];
+    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)
+    if (Feld[x][y] == element && AmoebaNr[x][y] > 0)
       group_nr = AmoebaNr[x][y];
   }
 
@@ -2270,13 +2370,13 @@ void AmoebenVereinigen(int ax, int ay)
     { 0, +1 }
   };
 
-  if (!new_group_nr)
+  if (new_group_nr == 0)
     return;
 
   for (i=0; i<4; i++)
   {
-    x = ax+xy[i%4][0];
-    y = ay+xy[i%4][1];
+    x = ax + xy[i][0];
+    y = ay + xy[i][1];
 
     if (!IN_LEV_FIELD(x, y))
       continue;
@@ -2288,14 +2388,22 @@ void AmoebenVereinigen(int ax, int ay)
     {
       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;
+      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;
+	}
+      }
     }
   }
 }
@@ -2303,33 +2411,47 @@ void AmoebenVereinigen(int ax, int ay)
 void AmoebeUmwandeln(int ax, int ay)
 {
   int i, x, y;
-  int group_nr = AmoebaNr[ax][ay];
-  static int xy[4][2] =
-  {
-    { 0, -1 },
-    { -1, 0 },
-    { +1, 0 },
-    { 0, +1 }
-  };
 
   if (Feld[ax][ay] == EL_AMOEBE_TOT)
   {
-    for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+    int group_nr = AmoebaNr[ax][ay];
+
+#ifdef DEBUG
+    if (group_nr == 0)
     {
-      if (Feld[x][y] == EL_AMOEBE_TOT && AmoebaNr[x][y] == group_nr)
+      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++)
       {
-	AmoebaNr[x][y] = 0;
-	Feld[x][y] = EL_AMOEBA2DIAM;
+	if (Feld[x][y] == EL_AMOEBE_TOT && AmoebaNr[x][y] == group_nr)
+	{
+	  AmoebaNr[x][y] = 0;
+	  Feld[x][y] = EL_AMOEBA2DIAM;
+	}
       }
     }
     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%4][0];
-      y = ay+xy[i%4][1];
+      x = ax + xy[i][0];
+      y = ay + xy[i][1];
 
       if (!IN_LEV_FIELD(x, y))
 	continue;
@@ -2340,23 +2462,36 @@ void AmoebeUmwandeln(int ax, int ay)
   }
 }
 
-void AmoebeUmwandeln2(int ax, int ay, int new_element)
+void AmoebeUmwandelnBD(int ax, int ay, int new_element)
 {
   int x, y;
   int group_nr = AmoebaNr[ax][ay];
   boolean done = FALSE;
 
-  for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+#ifdef DEBUG
+  if (group_nr == 0)
   {
-    if (AmoebaNr[x][y] == group_nr &&
-	(Feld[x][y] == EL_AMOEBE_TOT ||
-	 Feld[x][y] == EL_AMOEBE_BD ||
-	 Feld[x][y] == EL_AMOEBING))
+    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++)
     {
-      AmoebaNr[x][y] = 0;
-      Feld[x][y] = new_element;
-      DrawLevelField(x, y);
-      done = TRUE;
+      if (AmoebaNr[x][y] == group_nr &&
+	  (Feld[x][y] == EL_AMOEBE_TOT ||
+	   Feld[x][y] == EL_AMOEBE_BD ||
+	   Feld[x][y] == EL_AMOEBING))
+      {
+	AmoebaNr[x][y] = 0;
+	Feld[x][y] = new_element;
+	InitField(x, y, FALSE);
+	DrawLevelField(x, y);
+	done = TRUE;
+      }
     }
   }
 
@@ -2385,7 +2520,7 @@ void AmoebeWaechst(int x, int y)
   {
     MovDelay[x][y]--;
     if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-      DrawGraphic(SCREENX(x), SCREENY(y), GFX_AMOEBING+3-MovDelay[x][y]/2);
+      DrawGraphic(SCREENX(x), SCREENY(y), GFX_AMOEBING + 3 - MovDelay[x][y]/2);
 
     if (!MovDelay[x][y])
     {
@@ -2417,7 +2552,7 @@ void AmoebeAbleger(int ax, int ay)
   }
 
   if (!MovDelay[ax][ay])	/* start making new amoeba field */
-    MovDelay[ax][ay] = RND(FRAMES_PER_SECOND * 25/(1+level.tempo_amoebe));
+    MovDelay[ax][ay] = RND(FRAMES_PER_SECOND * 25 / (1 + level.tempo_amoebe));
 
   if (MovDelay[ax][ay])		/* wait some time before making new amoeba */
   {
@@ -2429,8 +2564,8 @@ void AmoebeAbleger(int ax, int ay)
   if (element == EL_AMOEBE_NASS)	/* object is an acid / amoeba drop */
   {
     int start = RND(4);
-    int x = ax+xy[start][0];
-    int y = ay+xy[start][1];
+    int x = ax + xy[start][0];
+    int y = ay + xy[start][1];
 
     if (!IN_LEV_FIELD(x, y))
       return;
@@ -2445,16 +2580,16 @@ void AmoebeAbleger(int ax, int ay)
     if (newax == ax && neway == ay)
       return;
   }
-  else				/* normal or "filled" amoeba */
+  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];
+      int j = (start + i) % 4;
+      int x = ax + xy[j][0];
+      int y = ay + xy[j][1];
 
       if (!IN_LEV_FIELD(x, y))
 	continue;
@@ -2470,7 +2605,7 @@ void AmoebeAbleger(int ax, int ay)
 	waiting_for_player = TRUE;
     }
 
-    if (newax == ax && neway == ay)
+    if (newax == ax && neway == ay)		/* amoeba cannot grow */
     {
       if (i == 4 && !waiting_for_player)
       {
@@ -2478,35 +2613,48 @@ void AmoebeAbleger(int ax, int ay)
 	DrawLevelField(ax, ay);
 	AmoebaCnt[AmoebaNr[ax][ay]]--;
 
-	if (AmoebaCnt[AmoebaNr[ax][ay]]<=0)	/* amoeba is completely dead */
+	if (AmoebaCnt[AmoebaNr[ax][ay]] <= 0)	/* amoeba is completely dead */
 	{
 	  if (element == EL_AMOEBE_VOLL)
 	    AmoebeUmwandeln(ax, ay);
 	  else if (element == EL_AMOEBE_BD)
-	    AmoebeUmwandeln2(ax, ay, level.amoebe_inhalt);
+	    AmoebeUmwandelnBD(ax, ay, level.amoebe_inhalt);
 	}
       }
       return;
     }
     else if (element == EL_AMOEBE_VOLL || element == EL_AMOEBE_BD)
     {
+      /* 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 (AmoebaCnt2[new_group_nr] >= 200 && element == EL_AMOEBE_BD)
+      if (element == EL_AMOEBE_BD && AmoebaCnt2[new_group_nr] >= 200)
       {
-	AmoebeUmwandeln2(newax, neway, EL_FELSBROCKEN);
+	AmoebeUmwandelnBD(newax, neway, EL_FELSBROCKEN);
 	return;
       }
     }
   }
 
-  if (element!=EL_AMOEBE_NASS || neway<ay || !IS_FREE(newax, neway) ||
-      (neway == lev_fieldy-1 && newax!=ax))
+  if (element != EL_AMOEBE_NASS || neway < ay || !IS_FREE(newax, neway) ||
+      (neway == lev_fieldy - 1 && newax != ax))
   {
     Feld[newax][neway] = EL_AMOEBING;
     Store[newax][neway] = element;
@@ -2673,10 +2821,9 @@ void NussKnacken(int x, int y)
 
 void SiebAktivieren(int x, int y, int typ)
 {
-  if (!(SiebAktiv % 4) && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-    DrawGraphic(SCREENX(x), SCREENY(y),
-		(typ == 1 ? GFX_SIEB_VOLL :
-		 GFX_SIEB2_VOLL) + 3 - (SiebAktiv % 16) / 4);
+  int graphic = (typ == 1 ? GFX_SIEB_VOLL : GFX_SIEB2_VOLL) + 3;
+
+  DrawGraphicAnimation(x, y, graphic, 4, 4, ANIM_REVERSE);
 }
 
 void AusgangstuerPruefen(int x, int y)
@@ -3325,29 +3472,35 @@ void GameActions()
 
   if (SiebAktiv)
   {
-    if (!(SiebAktiv%4))
+    if (!(SiebCount % 4))
       PlaySoundLevel(sieb_x, sieb_y, SND_MIEP);
-    SiebAktiv--;
-    if (!SiebAktiv)
+
+    if (SiebCount > 0)
     {
-      for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+      SiebCount--;
+      if (!SiebCount)
       {
-	element = Feld[x][y];
-	if (element == EL_SIEB_LEER || element == EL_SIEB_VOLL)
-	{
-	  Feld[x][y] = EL_SIEB_TOT;
-	  DrawLevelField(x, y);
-	}
-	else if (element == EL_SIEB2_LEER || element == EL_SIEB2_VOLL)
+	for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
 	{
-	  Feld[x][y] = EL_SIEB2_TOT;
-	  DrawLevelField(x, y);
+	  element = Feld[x][y];
+	  if (element == EL_SIEB_LEER || element == EL_SIEB_VOLL)
+	  {
+	    Feld[x][y] = EL_SIEB_TOT;
+	    DrawLevelField(x, y);
+	  }
+	  else if (element == EL_SIEB2_LEER || element == EL_SIEB2_VOLL)
+	  {
+	    Feld[x][y] = EL_SIEB2_TOT;
+	    DrawLevelField(x, y);
+	  }
 	}
+
+	SiebAktiv = FALSE;
       }
     }
   }
 
-  if (TimeLeft>0 && TimeFrames>=(1000/GameFrameDelay) && !tape.pausing)
+  if (TimeLeft > 0 && TimeFrames >= (1000 / GameFrameDelay) && !tape.pausing)
   {
     TimeFrames = 0;
     TimeLeft--;
@@ -3489,7 +3642,7 @@ boolean MoveFigureOneStep(struct PlayerInfo *player,
   jy = player->jy = new_jy;
   StorePlayer[jx][jy] = player->element_nr;
 
-  player->MovPos = (dx > 0 || dy > 0 ? -1 : 1) * 7*TILEX/8;
+  player->MovPos = (dx > 0 || dy > 0 ? -1 : 1) * (TILEX - TILEX / MoveSpeed);
 
   ScrollFigure(player, SCROLL_INIT);
 
@@ -3513,10 +3666,15 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
     /* should only happen if pre-1.2 tape recordings are played */
     /* this is only for backward compatibility */
 
+    int old_move_speed = MoveSpeed;
+
 #if DEBUG
     printf("THIS SHOULD ONLY HAPPEN WITH PRE-1.2 LEVEL TAPES.\n");
 #endif
 
+    /* scroll remaining steps with finest movement resolution */
+    MoveSpeed = 8;
+
     while (player->MovPos)
     {
       ScrollFigure(player, SCROLL_GO_ON);
@@ -3525,6 +3683,8 @@ boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
       DrawAllPlayers();
       BackToFront();
     }
+
+    MoveSpeed = old_move_speed;
   }
 
   if (player->last_move_dir & (MV_LEFT | MV_RIGHT))
@@ -3659,7 +3819,7 @@ void ScrollFigure(struct PlayerInfo *player, int mode)
   else if (!FrameReached(&player->actual_frame_counter, 1))
     return;
 
-  player->MovPos += (player->MovPos > 0 ? -1 : 1) * TILEX/8;
+  player->MovPos += (player->MovPos > 0 ? -1 : 1) * TILEX / MoveSpeed;
   player->GfxPos = ScrollStepSize * (player->MovPos / ScrollStepSize);
 
   if (Feld[last_jx][last_jy] == EL_PLAYER_IS_LEAVING)
@@ -3699,7 +3859,7 @@ void ScrollScreen(struct PlayerInfo *player, int mode)
 
   if (ScreenMovPos)
   {
-    ScreenMovPos += (ScreenMovPos > 0 ? -1 : 1) * TILEX/8;
+    ScreenMovPos += (ScreenMovPos > 0 ? -1 : 1) * TILEX / MoveSpeed;
     ScreenGfxPos = ScrollStepSize * (ScreenMovPos / ScrollStepSize);
     redraw_mask |= REDRAW_FIELD;
   }
@@ -3948,6 +4108,7 @@ int DigField(struct PlayerInfo *player,
     case EL_EDELSTEIN_ROT:
     case EL_EDELSTEIN_LILA:
     case EL_DIAMANT:
+    case EL_SP_INFOTRON:
       RemoveField(x, y);
       local_player->gems_still_needed -= (element == EL_DIAMANT ? 3 : 1);
       if (local_player->gems_still_needed < 0)
@@ -3959,6 +4120,13 @@ int DigField(struct PlayerInfo *player,
       PlaySoundLevel(x, y, SND_PONG);
       break;
 
+    case EL_SPEED_PILL:
+      RemoveField(x, y);
+      MoveSpeed = 4;
+      ScrollStepSize = TILEX/4;
+      PlaySoundLevel(x, y, SND_PONG);
+      break;
+
     case EL_DYNAMIT_AUS:
       RemoveField(x, y);
       player->dynamite++;
@@ -4195,7 +4363,11 @@ int DigField(struct PlayerInfo *player,
       break;
 
     default:
-      return MF_NO_ACTION;
+      if (IS_EATABLE(element))		/* other kinds of 'dirt' */
+	Feld[x][y] = EL_LEERRAUM;
+      else
+	return MF_NO_ACTION;
+
       break;
   }