rnd-20081007-1-src
[rocksndiamonds.git] / src / game.c
index f600e0462613cf1b878924af1dfccfc25802e06e..717ea8d2f263fd0d3ab1d3d99677ac860a469acc 100644 (file)
 
 #define USE_FIX_KILLED_BY_NON_WALKABLE (USE_NEW_STUFF          * 1)
 #define USE_FIX_IMPACT_COLLISION       (USE_NEW_STUFF          * 1)
+#define USE_FIX_CE_ACTION_WITH_PLAYER  (USE_NEW_STUFF          * 1)
+#define USE_FIX_NO_ACTION_AFTER_CHANGE (USE_NEW_STUFF          * 1)
+
+#define USE_PLAYER_REANIMATION         (USE_NEW_STUFF          * 1)
 
 #define USE_GFX_RESET_WHEN_NOT_MOVING  (USE_NEW_STUFF          * 1)
 
+#define USE_NEW_PLAYER_ASSIGNMENTS     (USE_NEW_STUFF          * 1)
+
+#define USE_DELAYED_GFX_REDRAW         (USE_NEW_STUFF          * 0)
+
+#if USE_DELAYED_GFX_REDRAW
+#define TEST_DrawLevelField(x, y)                              \
+       GfxRedraw[x][y] |= GFX_REDRAW_TILE
+#define TEST_DrawLevelFieldCrumbledSand(x, y)                  \
+       GfxRedraw[x][y] |= GFX_REDRAW_TILE_CRUMBLED
+#define TEST_DrawLevelFieldCrumbledSandNeighbours(x, y)                \
+       GfxRedraw[x][y] |= GFX_REDRAW_TILE_CRUMBLED_NEIGHBOURS
+#define TEST_DrawTwinkleOnField(x, y)                          \
+       GfxRedraw[x][y] |= GFX_REDRAW_TILE_TWINKLED
+#else
+#define TEST_DrawLevelField(x, y)                              \
+            DrawLevelField(x, y)
+#define TEST_DrawLevelFieldCrumbledSand(x, y)                  \
+            DrawLevelFieldCrumbledSand(x, y)
+#define TEST_DrawLevelFieldCrumbledSandNeighbours(x, y)                \
+            DrawLevelFieldCrumbledSandNeighbours(x, y)
+#define TEST_DrawTwinkleOnField(x, y)                          \
+            DrawTwinkleOnField(x, y)
+#endif
+
 
 /* for DigField() */
 #define DF_NO_PUSH             0
 #define GAME_PANEL_KEY_WHITE                   27
 #define GAME_PANEL_KEY_WHITE_COUNT             28
 #define GAME_PANEL_SCORE                       29
-#define GAME_PANEL_TIME                                30
-#define GAME_PANEL_TIME_HH                     31
-#define GAME_PANEL_TIME_MM                     32
-#define GAME_PANEL_TIME_SS                     33
-#define GAME_PANEL_SHIELD_NORMAL               34
-#define GAME_PANEL_SHIELD_NORMAL_TIME          35
-#define GAME_PANEL_SHIELD_DEADLY               36
-#define GAME_PANEL_SHIELD_DEADLY_TIME          37
-#define GAME_PANEL_EXIT                                38
-#define GAME_PANEL_EMC_MAGIC_BALL              39
-#define GAME_PANEL_EMC_MAGIC_BALL_SWITCH       40
-#define GAME_PANEL_LIGHT_SWITCH                        41
-#define GAME_PANEL_LIGHT_SWITCH_TIME           42
-#define GAME_PANEL_TIMEGATE_SWITCH             43
-#define GAME_PANEL_TIMEGATE_SWITCH_TIME                44
-#define GAME_PANEL_SWITCHGATE_SWITCH           45
-#define GAME_PANEL_EMC_LENSES                  46
-#define GAME_PANEL_EMC_LENSES_TIME             47
-#define GAME_PANEL_EMC_MAGNIFIER               48
-#define GAME_PANEL_EMC_MAGNIFIER_TIME          49
-#define GAME_PANEL_BALLOON_SWITCH              50
-#define GAME_PANEL_DYNABOMB_NUMBER             51
-#define GAME_PANEL_DYNABOMB_SIZE               52
-#define GAME_PANEL_DYNABOMB_POWER              53
-#define GAME_PANEL_PENGUINS                    54
-#define GAME_PANEL_SOKOBAN_OBJECTS             55
-#define GAME_PANEL_SOKOBAN_FIELDS              56
-#define GAME_PANEL_ROBOT_WHEEL                 57
-#define GAME_PANEL_CONVEYOR_BELT_1             58
-#define GAME_PANEL_CONVEYOR_BELT_2             59
-#define GAME_PANEL_CONVEYOR_BELT_3             60
-#define GAME_PANEL_CONVEYOR_BELT_4             61
-#define GAME_PANEL_CONVEYOR_BELT_1_SWITCH      62
-#define GAME_PANEL_CONVEYOR_BELT_2_SWITCH      63
-#define GAME_PANEL_CONVEYOR_BELT_3_SWITCH      64
-#define GAME_PANEL_CONVEYOR_BELT_4_SWITCH      65
-#define GAME_PANEL_MAGIC_WALL                  66
-#define GAME_PANEL_MAGIC_WALL_TIME             67
-#define GAME_PANEL_GRAVITY_STATE               68
-#define GAME_PANEL_ELEMENT_1                   69
-#define GAME_PANEL_ELEMENT_2                   70
-#define GAME_PANEL_ELEMENT_3                   71
-#define GAME_PANEL_ELEMENT_4                   72
-#define GAME_PANEL_ELEMENT_5                   73
-#define GAME_PANEL_ELEMENT_6                   74
-#define GAME_PANEL_ELEMENT_7                   75
-#define GAME_PANEL_ELEMENT_8                   76
-#define GAME_PANEL_ELEMENT_COUNT_1             77
-#define GAME_PANEL_ELEMENT_COUNT_2             78
-#define GAME_PANEL_ELEMENT_COUNT_3             79
-#define GAME_PANEL_ELEMENT_COUNT_4             80
-#define GAME_PANEL_ELEMENT_COUNT_5             81
-#define GAME_PANEL_ELEMENT_COUNT_6             82
-#define GAME_PANEL_ELEMENT_COUNT_7             83
-#define GAME_PANEL_ELEMENT_COUNT_8             84
-#define GAME_PANEL_CE_SCORE_1                  85
-#define GAME_PANEL_CE_SCORE_2                  86
-#define GAME_PANEL_CE_SCORE_3                  87
-#define GAME_PANEL_CE_SCORE_4                  88
-#define GAME_PANEL_CE_SCORE_5                  89
-#define GAME_PANEL_CE_SCORE_6                  90
-#define GAME_PANEL_CE_SCORE_7                  91
-#define GAME_PANEL_CE_SCORE_8                  92
-#define GAME_PANEL_CE_SCORE_1_ELEMENT          93
-#define GAME_PANEL_CE_SCORE_2_ELEMENT          94
-#define GAME_PANEL_CE_SCORE_3_ELEMENT          95
-#define GAME_PANEL_CE_SCORE_4_ELEMENT          96
-#define GAME_PANEL_CE_SCORE_5_ELEMENT          97
-#define GAME_PANEL_CE_SCORE_6_ELEMENT          98
-#define GAME_PANEL_CE_SCORE_7_ELEMENT          99
-#define GAME_PANEL_CE_SCORE_8_ELEMENT          100
-#define GAME_PANEL_PLAYER_NAME                 101
-#define GAME_PANEL_LEVEL_NAME                  102
-#define GAME_PANEL_LEVEL_AUTHOR                        103
-
-#define NUM_GAME_PANEL_CONTROLS                        104
+#define GAME_PANEL_HIGHSCORE                   30
+#define GAME_PANEL_TIME                                31
+#define GAME_PANEL_TIME_HH                     32
+#define GAME_PANEL_TIME_MM                     33
+#define GAME_PANEL_TIME_SS                     34
+#define GAME_PANEL_SHIELD_NORMAL               35
+#define GAME_PANEL_SHIELD_NORMAL_TIME          36
+#define GAME_PANEL_SHIELD_DEADLY               37
+#define GAME_PANEL_SHIELD_DEADLY_TIME          38
+#define GAME_PANEL_EXIT                                39
+#define GAME_PANEL_EMC_MAGIC_BALL              40
+#define GAME_PANEL_EMC_MAGIC_BALL_SWITCH       41
+#define GAME_PANEL_LIGHT_SWITCH                        42
+#define GAME_PANEL_LIGHT_SWITCH_TIME           43
+#define GAME_PANEL_TIMEGATE_SWITCH             44
+#define GAME_PANEL_TIMEGATE_SWITCH_TIME                45
+#define GAME_PANEL_SWITCHGATE_SWITCH           46
+#define GAME_PANEL_EMC_LENSES                  47
+#define GAME_PANEL_EMC_LENSES_TIME             48
+#define GAME_PANEL_EMC_MAGNIFIER               49
+#define GAME_PANEL_EMC_MAGNIFIER_TIME          50
+#define GAME_PANEL_BALLOON_SWITCH              51
+#define GAME_PANEL_DYNABOMB_NUMBER             52
+#define GAME_PANEL_DYNABOMB_SIZE               53
+#define GAME_PANEL_DYNABOMB_POWER              54
+#define GAME_PANEL_PENGUINS                    55
+#define GAME_PANEL_SOKOBAN_OBJECTS             56
+#define GAME_PANEL_SOKOBAN_FIELDS              57
+#define GAME_PANEL_ROBOT_WHEEL                 58
+#define GAME_PANEL_CONVEYOR_BELT_1             59
+#define GAME_PANEL_CONVEYOR_BELT_2             60
+#define GAME_PANEL_CONVEYOR_BELT_3             61
+#define GAME_PANEL_CONVEYOR_BELT_4             62
+#define GAME_PANEL_CONVEYOR_BELT_1_SWITCH      63
+#define GAME_PANEL_CONVEYOR_BELT_2_SWITCH      64
+#define GAME_PANEL_CONVEYOR_BELT_3_SWITCH      65
+#define GAME_PANEL_CONVEYOR_BELT_4_SWITCH      66
+#define GAME_PANEL_MAGIC_WALL                  67
+#define GAME_PANEL_MAGIC_WALL_TIME             68
+#define GAME_PANEL_GRAVITY_STATE               69
+#define GAME_PANEL_GRAPHIC_1                   70
+#define GAME_PANEL_GRAPHIC_2                   71
+#define GAME_PANEL_GRAPHIC_3                   72
+#define GAME_PANEL_GRAPHIC_4                   73
+#define GAME_PANEL_GRAPHIC_5                   74
+#define GAME_PANEL_GRAPHIC_6                   75
+#define GAME_PANEL_GRAPHIC_7                   76
+#define GAME_PANEL_GRAPHIC_8                   77
+#define GAME_PANEL_ELEMENT_1                   78
+#define GAME_PANEL_ELEMENT_2                   79
+#define GAME_PANEL_ELEMENT_3                   80
+#define GAME_PANEL_ELEMENT_4                   81
+#define GAME_PANEL_ELEMENT_5                   82
+#define GAME_PANEL_ELEMENT_6                   83
+#define GAME_PANEL_ELEMENT_7                   84
+#define GAME_PANEL_ELEMENT_8                   85
+#define GAME_PANEL_ELEMENT_COUNT_1             86
+#define GAME_PANEL_ELEMENT_COUNT_2             87
+#define GAME_PANEL_ELEMENT_COUNT_3             88
+#define GAME_PANEL_ELEMENT_COUNT_4             89
+#define GAME_PANEL_ELEMENT_COUNT_5             90
+#define GAME_PANEL_ELEMENT_COUNT_6             91
+#define GAME_PANEL_ELEMENT_COUNT_7             92
+#define GAME_PANEL_ELEMENT_COUNT_8             93
+#define GAME_PANEL_CE_SCORE_1                  94
+#define GAME_PANEL_CE_SCORE_2                  95
+#define GAME_PANEL_CE_SCORE_3                  96
+#define GAME_PANEL_CE_SCORE_4                  97
+#define GAME_PANEL_CE_SCORE_5                  98
+#define GAME_PANEL_CE_SCORE_6                  99
+#define GAME_PANEL_CE_SCORE_7                  100
+#define GAME_PANEL_CE_SCORE_8                  101
+#define GAME_PANEL_CE_SCORE_1_ELEMENT          102
+#define GAME_PANEL_CE_SCORE_2_ELEMENT          103
+#define GAME_PANEL_CE_SCORE_3_ELEMENT          104
+#define GAME_PANEL_CE_SCORE_4_ELEMENT          105
+#define GAME_PANEL_CE_SCORE_5_ELEMENT          106
+#define GAME_PANEL_CE_SCORE_6_ELEMENT          107
+#define GAME_PANEL_CE_SCORE_7_ELEMENT          108
+#define GAME_PANEL_CE_SCORE_8_ELEMENT          109
+#define GAME_PANEL_PLAYER_NAME                 110
+#define GAME_PANEL_LEVEL_NAME                  111
+#define GAME_PANEL_LEVEL_AUTHOR                        112
+
+#define NUM_GAME_PANEL_CONTROLS                        113
 
 struct GamePanelOrderInfo
 {
@@ -411,6 +448,11 @@ static struct GamePanelControlInfo game_panel_controls[] =
     &game.panel.score,
     TYPE_INTEGER,
   },
+  {
+    GAME_PANEL_HIGHSCORE,
+    &game.panel.highscore,
+    TYPE_INTEGER,
+  },
   {
     GAME_PANEL_TIME,
     &game.panel.time,
@@ -606,6 +648,46 @@ static struct GamePanelControlInfo game_panel_controls[] =
     &game.panel.gravity_state,
     TYPE_STRING,
   },
+  {
+    GAME_PANEL_GRAPHIC_1,
+    &game.panel.graphic[0],
+    TYPE_ELEMENT,
+  },
+  {
+    GAME_PANEL_GRAPHIC_2,
+    &game.panel.graphic[1],
+    TYPE_ELEMENT,
+  },
+  {
+    GAME_PANEL_GRAPHIC_3,
+    &game.panel.graphic[2],
+    TYPE_ELEMENT,
+  },
+  {
+    GAME_PANEL_GRAPHIC_4,
+    &game.panel.graphic[3],
+    TYPE_ELEMENT,
+  },
+  {
+    GAME_PANEL_GRAPHIC_5,
+    &game.panel.graphic[4],
+    TYPE_ELEMENT,
+  },
+  {
+    GAME_PANEL_GRAPHIC_6,
+    &game.panel.graphic[5],
+    TYPE_ELEMENT,
+  },
+  {
+    GAME_PANEL_GRAPHIC_7,
+    &game.panel.graphic[6],
+    TYPE_ELEMENT,
+  },
+  {
+    GAME_PANEL_GRAPHIC_8,
+    &game.panel.graphic[7],
+    TYPE_ELEMENT,
+  },
   {
     GAME_PANEL_ELEMENT_1,
     &game.panel.element[0],
@@ -848,6 +930,9 @@ static struct GamePanelControlInfo game_panel_controls[] =
         (be) + (e) - EL_SELF > EL_CUSTOM_END   ? EL_CUSTOM_END :       \
         (be) + (e) - EL_SELF)
 
+#define GET_PLAYER_FROM_BITS(p)                                                \
+       (EL_PLAYER_1 + ((p) != PLAYER_BITS_ANY ? log_2(p) : 0))
+
 #define GET_TARGET_ELEMENT(be, e, ch, cv, cs)                          \
        ((e) == EL_TRIGGER_PLAYER   ? (ch)->actual_trigger_player    :  \
         (e) == EL_TRIGGER_ELEMENT  ? (ch)->actual_trigger_element   :  \
@@ -976,7 +1061,10 @@ static boolean MovePlayer(struct PlayerInfo *, int, int);
 static void ScrollPlayer(struct PlayerInfo *, int);
 static void ScrollScreen(struct PlayerInfo *, int);
 
-int DigField(struct PlayerInfo *, int, int, int, int, int, int, int);
+static int DigField(struct PlayerInfo *, int, int, int, int, int, int, int);
+static boolean DigFieldByCE(int, int, int);
+static boolean SnapField(struct PlayerInfo *, int, int);
+static boolean DropElement(struct PlayerInfo *);
 
 static void InitBeltMovement(void);
 static void CloseAllOpenTimegates(void);
@@ -1043,14 +1131,12 @@ void TestIfBadThingRunsIntoPlayer(int, int, int);
 void TestIfFriendTouchesBadThing(int, int);
 void TestIfBadThingTouchesFriend(int, int);
 void TestIfBadThingTouchesOtherBadThing(int, int);
+void TestIfGoodThingGetsHitByBadThing(int, int, int);
 
 void KillPlayer(struct PlayerInfo *);
 void BuryPlayer(struct PlayerInfo *);
 void RemovePlayer(struct PlayerInfo *);
 
-boolean SnapField(struct PlayerInfo *, int, int);
-boolean DropElement(struct PlayerInfo *);
-
 static int getInvisibleActiveFromInvisibleElement(int);
 static int getInvisibleFromInvisibleActiveElement(int);
 
@@ -1083,6 +1169,8 @@ static int recursion_loop_depth;
 static boolean recursion_loop_detected;
 static boolean recursion_loop_element;
 
+static int map_player_action[MAX_PLAYERS];
+
 
 /* ------------------------------------------------------------------------- */
 /* definition of elements that automatically change to other elements after  */
@@ -1641,6 +1729,7 @@ static void InitPlayerField(int x, int y, int element, boolean init_game)
       }
       else
       {
+       stored_player[0].initial_element = element;
        stored_player[0].use_murphy = TRUE;
 
        if (!level.use_artwork_element[0])
@@ -1699,6 +1788,17 @@ static void InitPlayerField(int x, int y, int element, boolean init_game)
     player->jx = player->last_jx = x;
     player->jy = player->last_jy = y;
   }
+
+#if USE_PLAYER_REANIMATION
+  if (!init_game)
+  {
+    int player_nr = GET_PLAYER_NR(element);
+    struct PlayerInfo *player = &stored_player[player_nr];
+
+    if (player->active && player->killed)
+      player->reanimated = TRUE; /* if player was just killed, reanimate him */
+  }
+#endif
 }
 
 static void InitField(int x, int y, boolean init_game)
@@ -1886,6 +1986,34 @@ static void InitField(int x, int y, boolean init_game)
        Feld[x][y] = EL_EMC_MAGIC_BALL_SWITCH_ACTIVE;
       break;
 
+    case EL_TRIGGER_PLAYER:
+    case EL_TRIGGER_ELEMENT:
+    case EL_TRIGGER_CE_VALUE:
+    case EL_TRIGGER_CE_SCORE:
+    case EL_SELF:
+    case EL_ANY_ELEMENT:
+    case EL_CURRENT_CE_VALUE:
+    case EL_CURRENT_CE_SCORE:
+    case EL_PREV_CE_1:
+    case EL_PREV_CE_2:
+    case EL_PREV_CE_3:
+    case EL_PREV_CE_4:
+    case EL_PREV_CE_5:
+    case EL_PREV_CE_6:
+    case EL_PREV_CE_7:
+    case EL_PREV_CE_8:
+    case EL_NEXT_CE_1:
+    case EL_NEXT_CE_2:
+    case EL_NEXT_CE_3:
+    case EL_NEXT_CE_4:
+    case EL_NEXT_CE_5:
+    case EL_NEXT_CE_6:
+    case EL_NEXT_CE_7:
+    case EL_NEXT_CE_8:
+      /* reference elements should not be used on the playfield */
+      Feld[x][y] = EL_EMPTY;
+      break;
+
     default:
       if (IS_CUSTOM_ELEMENT(element))
       {
@@ -2027,7 +2155,7 @@ void InitGameControlValues()
 
     if (nr != i)
     {
-      Error(ERR_INFO, "'game_panel_controls' structure corrupted");
+      Error(ERR_INFO, "'game_panel_controls' structure corrupted at %d", i);
       Error(ERR_EXIT, "this should not happen -- please debug");
     }
 
@@ -2060,8 +2188,17 @@ void InitGameControlValues()
 
 void UpdatePlayfieldElementCount()
 {
+  boolean use_element_count = FALSE;
   int i, j, x, y;
 
+  /* first check if it is needed at all to calculate playfield element count */
+  for (i = GAME_PANEL_ELEMENT_COUNT_1; i <= GAME_PANEL_ELEMENT_COUNT_8; i++)
+    if (!PANEL_DEACTIVATED(game_panel_controls[i].pos))
+      use_element_count = TRUE;
+
+  if (!use_element_count)
+    return;
+
   for (i = 0; i < MAX_NUM_ELEMENTS; i++)
     element_info[i].element_count = 0;
 
@@ -2184,6 +2321,7 @@ void UpdateGameControlValues()
   }
 
   game_panel_controls[GAME_PANEL_SCORE].value = score;
+  game_panel_controls[GAME_PANEL_HIGHSCORE].value = highscore[0].Score;
 
   game_panel_controls[GAME_PANEL_TIME].value = time;
 
@@ -2280,6 +2418,9 @@ void UpdateGameControlValues()
   game_panel_controls[GAME_PANEL_GRAVITY_STATE].value = game.gravity;
 #endif
 
+  for (i = 0; i < NUM_PANEL_GRAPHICS; i++)
+    game_panel_controls[GAME_PANEL_GRAPHIC_1 + i].value = EL_GRAPHIC_1 + i;
+
   for (i = 0; i < NUM_PANEL_ELEMENTS; i++)
     game_panel_controls[GAME_PANEL_ELEMENT_1 + i].value =
       (IS_DRAWABLE_ELEMENT(game.panel.element[i].id) ?
@@ -2288,8 +2429,7 @@ void UpdateGameControlValues()
   for (i = 0; i < NUM_PANEL_ELEMENTS; i++)
     game_panel_controls[GAME_PANEL_ELEMENT_COUNT_1 + i].value =
       (IS_VALID_ELEMENT(game.panel.element_count[i].id) ?
-       element_info[game.panel.element_count[i].id].element_count :
-       EL_UNDEFINED);
+       element_info[game.panel.element_count[i].id].element_count : 0);
 
   for (i = 0; i < NUM_PANEL_CE_SCORE; i++)
     game_panel_controls[GAME_PANEL_CE_SCORE_1 + i].value =
@@ -2314,35 +2454,38 @@ void UpdateGameControlValues()
 
     if (gpc->type == TYPE_ELEMENT)
     {
-      int last_anim_random_frame = gfx.anim_random_frame;
-      int element = gpc->value;
-      int graphic = el2panelimg(element);
-
-      if (gpc->value != gpc->last_value)
-      {
-       gpc->gfx_frame = 0;
-       gpc->gfx_random = INIT_GFX_RANDOM();
-      }
-      else
+      if (gpc->value != EL_UNDEFINED && gpc->value != EL_EMPTY)
       {
-       gpc->gfx_frame++;
+       int last_anim_random_frame = gfx.anim_random_frame;
+       int element = gpc->value;
+       int graphic = el2panelimg(element);
 
-       if (ANIM_MODE(graphic) == ANIM_RANDOM &&
-           IS_NEXT_FRAME(gpc->gfx_frame, graphic))
+       if (gpc->value != gpc->last_value)
+       {
+         gpc->gfx_frame = 0;
          gpc->gfx_random = INIT_GFX_RANDOM();
-      }
+       }
+       else
+       {
+         gpc->gfx_frame++;
+
+         if (ANIM_MODE(graphic) == ANIM_RANDOM &&
+             IS_NEXT_FRAME(gpc->gfx_frame, graphic))
+           gpc->gfx_random = INIT_GFX_RANDOM();
+       }
 
-      if (ANIM_MODE(graphic) == ANIM_RANDOM)
-       gfx.anim_random_frame = gpc->gfx_random;
+       if (ANIM_MODE(graphic) == ANIM_RANDOM)
+         gfx.anim_random_frame = gpc->gfx_random;
 
-      if (ANIM_MODE(graphic) == ANIM_CE_SCORE)
-       gpc->gfx_frame = element_info[element].collect_score;
+       if (ANIM_MODE(graphic) == ANIM_CE_SCORE)
+         gpc->gfx_frame = element_info[element].collect_score;
 
-      gpc->frame = getGraphicAnimationFrame(el2panelimg(gpc->value),
-                                           gpc->gfx_frame);
+       gpc->frame = getGraphicAnimationFrame(el2panelimg(gpc->value),
+                                             gpc->gfx_frame);
 
-      if (ANIM_MODE(graphic) == ANIM_RANDOM)
-       gfx.anim_random_frame = last_anim_random_frame;
+       if (ANIM_MODE(graphic) == ANIM_RANDOM)
+         gfx.anim_random_frame = last_anim_random_frame;
+      }
     }
   }
 }
@@ -2487,6 +2630,13 @@ void DisplayGameControlValues()
        element = value;
        graphic = el2panelimg(value);
 
+       // printf("::: %d, '%s' [%d]\n", element, EL_NAME(element), size);
+
+#if 1
+       if (element >= EL_GRAPHIC_1 && element <= EL_GRAPHIC_8 && size == 0)
+         size = TILESIZE;
+#endif
+
        getSizedGraphicSource(graphic, frame, size, &src_bitmap,
                              &src_x, &src_y);
 
@@ -2593,6 +2743,15 @@ void DisplayGameControlValues()
   game_status = GAME_MODE_PLAYING;
 }
 
+void UpdateAndDisplayGameControlValues()
+{
+  if (tape.warp_forward)
+    return;
+
+  UpdateGameControlValues();
+  DisplayGameControlValues();
+}
+
 void DrawGameValue_Emeralds(int value)
 {
   struct TextPosInfo *pos = &game.panel.gems;
@@ -3228,7 +3387,7 @@ static void InitGameEngine()
     SET_PROPERTY(ch_delay->element, EP_CAN_CHANGE_OR_HAS_ACTION, TRUE);
   }
 
-  /* ---------- initialize internal run-time variables ------------- */
+  /* ---------- initialize internal run-time variables --------------------- */
 
   for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
   {
@@ -3266,6 +3425,27 @@ static void InitGameEngine()
     }
   }
 
+#if 1
+  /* ---------- initialize reference elements in change conditions --------- */
+
+  for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
+  {
+    int element = EL_CUSTOM_START + i;
+    struct ElementInfo *ei = &element_info[element];
+
+    for (j = 0; j < ei->num_change_pages; j++)
+    {
+      int trigger_element = ei->change_page[j].initial_trigger_element;
+
+      if (trigger_element >= EL_PREV_CE_8 &&
+         trigger_element <= EL_NEXT_CE_8)
+       trigger_element = RESOLVED_REFERENCE_ELEMENT(element, trigger_element);
+
+      ei->change_page[j].trigger_element = trigger_element;
+    }
+  }
+#endif
+
   /* ---------- initialize run-time trigger player and element ------------- */
 
   for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
@@ -3275,7 +3455,8 @@ static void InitGameEngine()
     for (j = 0; j < ei->num_change_pages; j++)
     {
       ei->change_page[j].actual_trigger_element = EL_EMPTY;
-      ei->change_page[j].actual_trigger_player = EL_PLAYER_1;
+      ei->change_page[j].actual_trigger_player = EL_EMPTY;
+      ei->change_page[j].actual_trigger_player_bits = CH_PLAYER_NONE;
       ei->change_page[j].actual_trigger_side = CH_SIDE_NONE;
       ei->change_page[j].actual_trigger_ce_value = 0;
       ei->change_page[j].actual_trigger_ce_score = 0;
@@ -3503,6 +3684,11 @@ void InitGame()
   boolean emulate_sp = TRUE;   /* unless non-SUPAPLEX    elements found */
 #if 0
   boolean do_fading = (game_status == GAME_MODE_MAIN);
+#endif
+#if 1
+  int initial_move_dir = MV_DOWN;
+#else
+  int initial_move_dir = MV_NONE;
 #endif
   int i, j, x, y;
 
@@ -3524,7 +3710,10 @@ void InitGame()
 
     player->present = FALSE;
     player->active = FALSE;
+    player->mapped = FALSE;
+
     player->killed = FALSE;
+    player->reanimated = FALSE;
 
     player->action = 0;
     player->effective_action = 0;
@@ -3548,18 +3737,19 @@ void InitGame()
     player->dynabombs_left = 0;
     player->dynabomb_xl = FALSE;
 
-    player->MovDir = MV_NONE;
+    player->MovDir = initial_move_dir;
     player->MovPos = 0;
     player->GfxPos = 0;
-    player->GfxDir = MV_NONE;
+    player->GfxDir = initial_move_dir;
     player->GfxAction = ACTION_DEFAULT;
     player->Frame = 0;
     player->StepFrame = 0;
 
-    player->use_murphy = FALSE;
+    player->initial_element = player->element_nr;
     player->artwork_element =
       (level.use_artwork_element[i] ? level.artwork_element[i] :
        player->element_nr);
+    player->use_murphy = FALSE;
 
     player->block_last_field = FALSE;  /* initialized in InitPlayerField() */
     player->block_delay_adjustment = 0;        /* initialized in InitPlayerField() */
@@ -3572,7 +3762,7 @@ void InitGame()
 
     player->step_counter = 0;
 
-    player->last_move_dir = MV_NONE;
+    player->last_move_dir = initial_move_dir;
 
     player->is_active = FALSE;
 
@@ -3596,7 +3786,7 @@ void InitGame()
     player->anim_delay_counter = 0;
     player->post_delay_counter = 0;
 
-    player->dir_waiting = MV_NONE;
+    player->dir_waiting = initial_move_dir;
     player->action_waiting = ACTION_DEFAULT;
     player->last_action_waiting = ACTION_DEFAULT;
     player->special_action_bored = ACTION_DEFAULT;
@@ -3629,6 +3819,26 @@ void InitGame()
     player->inventory_infinite_element = EL_UNDEFINED;
     player->inventory_size = 0;
 
+    if (level.use_initial_inventory[i])
+    {
+      for (j = 0; j < level.initial_inventory_size[i]; j++)
+      {
+       int element = level.initial_inventory_content[i][j];
+       int collect_count = element_info[element].collect_count_initial;
+       int k;
+
+       if (!IS_CUSTOM_ELEMENT(element))
+         collect_count = 1;
+
+       if (collect_count == 0)
+         player->inventory_infinite_element = element;
+       else
+         for (k = 0; k < collect_count; k++)
+           if (player->inventory_size < MAX_INVENTORY_SIZE)
+             player->inventory_element[player->inventory_size++] = element;
+      }
+    }
+
     DigField(player, 0, 0, 0, 0, 0, 0, DF_NO_PUSH);
     SnapField(player, 0, 0);
 
@@ -3642,6 +3852,8 @@ void InitGame()
     player->LevelSolved_SaveScore = FALSE;
     player->LevelSolved_CountingTime = 0;
     player->LevelSolved_CountingScore = 0;
+
+    map_player_action[i] = i;
   }
 
   network_player_action_received = FALSE;
@@ -3745,6 +3957,7 @@ void InitGame()
     GfxElement[x][y] = EL_UNDEFINED;
     GfxAction[x][y] = ACTION_DEFAULT;
     GfxDir[x][y] = MV_NONE;
+    GfxRedraw[x][y] = GFX_REDRAW_NONE;
   }
 
   SCAN_PLAYFIELD(x, y)
@@ -3833,6 +4046,124 @@ void InitGame()
     if (game.belt_dir[i] == MV_NONE)
       game.belt_dir_nr[i] = 3;         /* not moving, next moving left */
 
+#if USE_NEW_PLAYER_ASSIGNMENTS
+  /* !!! SAME AS init.c:InitPlayerInfo() -- FIX THIS !!! */
+  /* choose default local player */
+  local_player = &stored_player[0];
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+    stored_player[i].connected = FALSE;
+
+  local_player->connected = TRUE;
+  /* !!! SAME AS init.c:InitPlayerInfo() -- FIX THIS !!! */
+
+  if (tape.playing)
+  {
+    /* try to guess locally connected team mode players (needed for correct
+       assignment of player figures from level to locally playing players) */
+
+    for (i = 0; i < MAX_PLAYERS; i++)
+      if (tape.player_participates[i])
+       stored_player[i].connected = TRUE;
+  }
+  else if (setup.team_mode && !options.network)
+  {
+    /* try to guess locally connected team mode players (needed for correct
+       assignment of player figures from level to locally playing players) */
+
+    for (i = 0; i < MAX_PLAYERS; i++)
+      if (setup.input[i].use_joystick ||
+         setup.input[i].key.left != KSYM_UNDEFINED)
+       stored_player[i].connected = TRUE;
+  }
+
+#if 0
+  for (i = 0; i < MAX_PLAYERS; i++)
+    printf("::: player %d: %s\n", i,
+          (stored_player[i].connected ? "connected" : "not connected"));
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+    printf("::: player %d: %s\n", i,
+          (stored_player[i].present ? "present" : "not present"));
+#endif
+
+  /* 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)
+    {
+      struct PlayerInfo *field_player = NULL;
+
+#if 0
+      printf("::: looking for field player for player %d ...\n", i);
+#endif
+
+      /* assign first free player found that is present in the playfield */
+
+      /* first try: look for unmapped playfield player that is not connected */
+      if (field_player == NULL)
+       for (j = 0; j < MAX_PLAYERS; j++)
+         if (stored_player[j].present &&
+             !stored_player[j].mapped &&
+             !stored_player[j].connected)
+           field_player = &stored_player[j];
+
+      /* second try: look for *any* unmapped playfield player */
+      if (field_player == NULL)
+       for (j = 0; j < MAX_PLAYERS; j++)
+         if (stored_player[j].present &&
+             !stored_player[j].mapped)
+           field_player = &stored_player[j];
+
+      if (field_player != NULL)
+      {
+       int jx = field_player->jx, jy = field_player->jy;
+
+#if 0
+       printf("::: found player figure %d\n", field_player->index_nr);
+#endif
+
+       player->present = FALSE;
+       player->active = FALSE;
+
+       field_player->present = TRUE;
+       field_player->active = TRUE;
+
+       /*
+       player->initial_element = field_player->initial_element;
+       player->artwork_element = field_player->artwork_element;
+
+       player->block_last_field       = field_player->block_last_field;
+       player->block_delay_adjustment = field_player->block_delay_adjustment;
+       */
+
+       StorePlayer[jx][jy] = field_player->element_nr;
+
+       field_player->jx = field_player->last_jx = jx;
+       field_player->jy = field_player->last_jy = jy;
+
+       if (local_player == player)
+         local_player = field_player;
+
+       map_player_action[field_player->index_nr] = i;
+
+       field_player->mapped = TRUE;
+
+#if 0
+       printf("::: map_player_action[%d] == %d\n",
+              field_player->index_nr, i);
+#endif
+      }
+    }
+
+    if (player->connected && player->present)
+      player->mapped = TRUE;
+  }
+
+#else
+
   /* check if any connected player was not found in playfield */
   for (i = 0; i < MAX_PLAYERS; i++)
   {
@@ -3842,24 +4173,26 @@ void InitGame()
     {
       for (j = 0; j < MAX_PLAYERS; j++)
       {
-       struct PlayerInfo *some_player = &stored_player[j];
-       int jx = some_player->jx, jy = some_player->jy;
+       struct PlayerInfo *field_player = &stored_player[j];
+       int jx = field_player->jx, jy = field_player->jy;
 
        /* assign first free player found that is present in the playfield */
-       if (some_player->present && !some_player->connected)
+       if (field_player->present && !field_player->connected)
        {
          player->present = TRUE;
          player->active = TRUE;
 
-         some_player->present = FALSE;
-         some_player->active = FALSE;
+         field_player->present = FALSE;
+         field_player->active = FALSE;
 
-         player->artwork_element = some_player->artwork_element;
+         player->initial_element = field_player->initial_element;
+         player->artwork_element = field_player->artwork_element;
 
-         player->block_last_field       = some_player->block_last_field;
-         player->block_delay_adjustment = some_player->block_delay_adjustment;
+         player->block_last_field       = field_player->block_last_field;
+         player->block_delay_adjustment = field_player->block_delay_adjustment;
 
          StorePlayer[jx][jy] = player->element_nr;
+
          player->jx = player->last_jx = jx;
          player->jy = player->last_jy = jy;
 
@@ -3868,11 +4201,31 @@ void InitGame()
       }
     }
   }
+#endif
+
+#if 0
+  printf("::: local_player->present == %d\n", local_player->present);
+#endif
 
   if (tape.playing)
   {
     /* when playing a tape, eliminate all players who do not participate */
 
+#if USE_NEW_PLAYER_ASSIGNMENTS
+    for (i = 0; i < MAX_PLAYERS; i++)
+    {
+      if (stored_player[i].active &&
+         !tape.player_participates[map_player_action[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
     for (i = 0; i < MAX_PLAYERS; i++)
     {
       if (stored_player[i].active && !tape.player_participates[i])
@@ -3885,6 +4238,7 @@ void InitGame()
        Feld[jx][jy] = EL_EMPTY;
       }
     }
+#endif
   }
   else if (!options.network && !setup.team_mode)       /* && !tape.playing */
   {
@@ -3915,9 +4269,15 @@ void InitGame()
   /* when recording the game, store which players take part in the game */
   if (tape.recording)
   {
+#if USE_NEW_PLAYER_ASSIGNMENTS
+    for (i = 0; i < MAX_PLAYERS; i++)
+      if (stored_player[i].connected)
+       tape.player_participates[i] = TRUE;
+#else
     for (i = 0; i < MAX_PLAYERS; i++)
       if (stored_player[i].active)
        tape.player_participates[i] = TRUE;
+#endif
   }
 
   if (options.debug)
@@ -4066,8 +4426,10 @@ void InitGame()
                local_player->jy - MIDPOSY);
   }
 
+#if 0
   /* do not use PLAYING mask for fading out from main screen */
   game_status = GAME_MODE_MAIN;
+#endif
 
   StopAnimation();
 
@@ -4093,7 +4455,9 @@ void InitGame()
     FadeOut(REDRAW_FIELD);
 #endif
 
+#if 0
   game_status = GAME_MODE_PLAYING;
+#endif
 
   /* !!! FIX THIS (START) !!! */
   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
@@ -4139,8 +4503,12 @@ void InitGame()
   SetPanelBackground();
   SetDrawBackgroundMask(REDRAW_DOOR_1);
 
+#if 1
+  UpdateAndDisplayGameControlValues();
+#else
   UpdateGameDoorValues();
   DrawGameDoorValues();
+#endif
 
   if (!game.restart_level)
   {
@@ -4967,6 +5335,10 @@ static void RemoveField(int x, int y)
   GfxElement[x][y] = EL_UNDEFINED;
   GfxAction[x][y] = ACTION_DEFAULT;
   GfxDir[x][y] = MV_NONE;
+#if 0
+  /* !!! this would prevent the removed tile from being redrawn !!! */
+  GfxRedraw[x][y] = GFX_REDRAW_NONE;
+#endif
 }
 
 void RemoveMovingField(int x, int y)
@@ -4992,7 +5364,7 @@ void RemoveMovingField(int x, int y)
 
       Store[oldx][oldy] = Store2[oldx][oldy] = 0;
 
-      DrawLevelField(oldx, oldy);
+      TEST_DrawLevelField(oldx, oldy);
 
       return;
     }
@@ -5021,8 +5393,8 @@ void RemoveMovingField(int x, int y)
   if (next_element != EL_UNDEFINED)
     Feld[oldx][oldy] = next_element;
 
-  DrawLevelField(oldx, oldy);
-  DrawLevelField(newx, newy);
+  TEST_DrawLevelField(oldx, oldy);
+  TEST_DrawLevelField(newx, newy);
 }
 
 void DrawDynamite(int x, int y)
@@ -5373,6 +5745,21 @@ void RelocatePlayer(int jx, int jy, int el_player_raw)
 
   CheckTriggeredElementChangeByPlayer(jx, jy, element, CE_PLAYER_ENTERS_X,
                                      player->index_bit, enter_side);
+
+#if 1
+  if (player->is_switching)
+  {
+    /* ensure that relocation while still switching an element does not cause
+       a new element to be treated as also switched directly after relocation
+       (this is important for teleporter switches that teleport the player to
+       a place where another teleporter switch is in the same direction, which
+       would then incorrectly be treated as immediately switched before the
+       direction key that caused the switch was released) */
+
+    player->switch_x += jx - old_jx;
+    player->switch_y += jy - old_jy;
+  }
+#endif
 }
 
 void Explode(int ex, int ey, int phase, int mode)
@@ -5685,12 +6072,12 @@ void Explode(int ex, int ey, int phase, int mode)
 
     InitField_WithBug2(x, y, FALSE);
 
-    DrawLevelField(x, y);
+    TEST_DrawLevelField(x, y);
 
     TestIfElementTouchesCustomElement(x, y);
 
     if (GFX_CRUMBLED(element))
-      DrawLevelFieldCrumbledSandNeighbours(x, y);
+      TEST_DrawLevelFieldCrumbledSandNeighbours(x, y);
 
     if (IS_PLAYER(x, y) && !PLAYERINFO(x, y)->present)
       StorePlayer[x][y] = 0;
@@ -5704,7 +6091,7 @@ void Explode(int ex, int ey, int phase, int mode)
     int frame = getGraphicAnimationFrame(graphic, GfxFrame[x][y]);
 
     if (phase == delay)
-      DrawLevelFieldCrumbledSand(x, y);
+      TEST_DrawLevelFieldCrumbledSand(x, y);
 
     if (IS_WALKABLE_OVER(Back[x][y]) && Back[x][y] != EL_EMPTY)
     {
@@ -5781,8 +6168,12 @@ void Bang(int x, int y)
   {
     struct PlayerInfo *player = PLAYERINFO(x, y);
 
+#if USE_FIX_CE_ACTION_WITH_PLAYER
+    element = Feld[x][y] = player->initial_element;
+#else
     element = Feld[x][y] = (player->use_murphy ? EL_SP_MURPHY :
                            player->element_nr);
+#endif
 
     if (level.use_explosion_element[player->index_nr])
     {
@@ -6007,7 +6398,7 @@ static void ToggleBeltSwitch(int x, int y)
       if (e_belt_nr == belt_nr)
       {
        Feld[xx][yy] = belt_base_switch_element[belt_nr] + belt_dir_nr;
-       DrawLevelField(xx, yy);
+       TEST_DrawLevelField(xx, yy);
       }
     }
     else if (IS_BELT(element) && belt_dir != MV_NONE)
@@ -6019,7 +6410,7 @@ static void ToggleBeltSwitch(int x, int y)
        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);
+       TEST_DrawLevelField(xx, yy);
       }
     }
     else if (IS_BELT_ACTIVE(element) && belt_dir == MV_NONE)
@@ -6031,7 +6422,7 @@ static void ToggleBeltSwitch(int x, int y)
        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);
+       TEST_DrawLevelField(xx, yy);
       }
     }
   }
@@ -6052,34 +6443,34 @@ static void ToggleSwitchgateSwitch(int x, int y)
        element == EL_SWITCHGATE_SWITCH_DOWN)
     {
       Feld[xx][yy] = EL_SWITCHGATE_SWITCH_UP + game.switchgate_pos;
-      DrawLevelField(xx, yy);
+      TEST_DrawLevelField(xx, yy);
     }
     else if (element == EL_DC_SWITCHGATE_SWITCH_UP ||
             element == EL_DC_SWITCHGATE_SWITCH_DOWN)
     {
       Feld[xx][yy] = EL_DC_SWITCHGATE_SWITCH_UP + game.switchgate_pos;
-      DrawLevelField(xx, yy);
+      TEST_DrawLevelField(xx, yy);
     }
 #else
     if (element == EL_SWITCHGATE_SWITCH_UP)
     {
       Feld[xx][yy] = EL_SWITCHGATE_SWITCH_DOWN;
-      DrawLevelField(xx, yy);
+      TEST_DrawLevelField(xx, yy);
     }
     else if (element == EL_SWITCHGATE_SWITCH_DOWN)
     {
       Feld[xx][yy] = EL_SWITCHGATE_SWITCH_UP;
-      DrawLevelField(xx, yy);
+      TEST_DrawLevelField(xx, yy);
     }
     else if (element == EL_DC_SWITCHGATE_SWITCH_UP)
     {
       Feld[xx][yy] = EL_DC_SWITCHGATE_SWITCH_DOWN;
-      DrawLevelField(xx, yy);
+      TEST_DrawLevelField(xx, yy);
     }
     else if (element == EL_DC_SWITCHGATE_SWITCH_DOWN)
     {
       Feld[xx][yy] = EL_DC_SWITCHGATE_SWITCH_UP;
-      DrawLevelField(xx, yy);
+      TEST_DrawLevelField(xx, yy);
     }
 #endif
     else if (element == EL_SWITCHGATE_OPEN ||
@@ -6127,25 +6518,25 @@ static void RedrawAllLightSwitchesAndInvisibleElements()
        game.light_time_left > 0)
     {
       Feld[x][y] = EL_LIGHT_SWITCH_ACTIVE;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_LIGHT_SWITCH_ACTIVE &&
             game.light_time_left == 0)
     {
       Feld[x][y] = EL_LIGHT_SWITCH;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_EMC_DRIPPER &&
             game.light_time_left > 0)
     {
       Feld[x][y] = EL_EMC_DRIPPER_ACTIVE;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_EMC_DRIPPER_ACTIVE &&
             game.light_time_left == 0)
     {
       Feld[x][y] = EL_EMC_DRIPPER;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_INVISIBLE_STEELWALL ||
             element == EL_INVISIBLE_WALL ||
@@ -6154,11 +6545,11 @@ static void RedrawAllLightSwitchesAndInvisibleElements()
       if (game.light_time_left > 0)
        Feld[x][y] = getInvisibleActiveFromInvisibleElement(element);
 
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
 
       /* uncrumble neighbour fields, if needed */
       if (element == EL_INVISIBLE_SAND)
-       DrawLevelFieldCrumbledSandNeighbours(x, y);
+       TEST_DrawLevelFieldCrumbledSandNeighbours(x, y);
     }
     else if (element == EL_INVISIBLE_STEELWALL_ACTIVE ||
             element == EL_INVISIBLE_WALL_ACTIVE ||
@@ -6167,11 +6558,11 @@ static void RedrawAllLightSwitchesAndInvisibleElements()
       if (game.light_time_left == 0)
        Feld[x][y] = getInvisibleFromInvisibleActiveElement(element);
 
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
 
       /* re-crumble neighbour fields, if needed */
       if (element == EL_INVISIBLE_SAND)
-       DrawLevelFieldCrumbledSandNeighbours(x, y);
+       TEST_DrawLevelFieldCrumbledSandNeighbours(x, y);
     }
   }
 }
@@ -6188,13 +6579,13 @@ static void RedrawAllInvisibleElementsForLenses()
        game.lenses_time_left > 0)
     {
       Feld[x][y] = EL_EMC_DRIPPER_ACTIVE;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_EMC_DRIPPER_ACTIVE &&
             game.lenses_time_left == 0)
     {
       Feld[x][y] = EL_EMC_DRIPPER;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_INVISIBLE_STEELWALL ||
             element == EL_INVISIBLE_WALL ||
@@ -6203,11 +6594,11 @@ static void RedrawAllInvisibleElementsForLenses()
       if (game.lenses_time_left > 0)
        Feld[x][y] = getInvisibleActiveFromInvisibleElement(element);
 
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
 
       /* uncrumble neighbour fields, if needed */
       if (element == EL_INVISIBLE_SAND)
-       DrawLevelFieldCrumbledSandNeighbours(x, y);
+       TEST_DrawLevelFieldCrumbledSandNeighbours(x, y);
     }
     else if (element == EL_INVISIBLE_STEELWALL_ACTIVE ||
             element == EL_INVISIBLE_WALL_ACTIVE ||
@@ -6216,11 +6607,11 @@ static void RedrawAllInvisibleElementsForLenses()
       if (game.lenses_time_left == 0)
        Feld[x][y] = getInvisibleFromInvisibleActiveElement(element);
 
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
 
       /* re-crumble neighbour fields, if needed */
       if (element == EL_INVISIBLE_SAND)
-       DrawLevelFieldCrumbledSandNeighbours(x, y);
+       TEST_DrawLevelFieldCrumbledSandNeighbours(x, y);
     }
   }
 }
@@ -6237,13 +6628,13 @@ static void RedrawAllInvisibleElementsForMagnifier()
        game.magnify_time_left > 0)
     {
       Feld[x][y] = EL_EMC_FAKE_GRASS_ACTIVE;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_EMC_FAKE_GRASS_ACTIVE &&
             game.magnify_time_left == 0)
     {
       Feld[x][y] = EL_EMC_FAKE_GRASS;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (IS_GATE_GRAY(element) &&
             game.magnify_time_left > 0)
@@ -6254,8 +6645,10 @@ static void RedrawAllInvisibleElementsForMagnifier()
                    element - EL_EM_GATE_1_GRAY + EL_EM_GATE_1_GRAY_ACTIVE :
                    IS_EMC_GATE_GRAY(element) ?
                    element - EL_EMC_GATE_5_GRAY + EL_EMC_GATE_5_GRAY_ACTIVE :
+                   IS_DC_GATE_GRAY(element) ?
+                   EL_DC_GATE_WHITE_GRAY_ACTIVE :
                    element);
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (IS_GATE_GRAY_ACTIVE(element) &&
             game.magnify_time_left == 0)
@@ -6266,8 +6659,10 @@ static void RedrawAllInvisibleElementsForMagnifier()
                    element - EL_EM_GATE_1_GRAY_ACTIVE + EL_EM_GATE_1_GRAY :
                    IS_EMC_GATE_GRAY_ACTIVE(element) ?
                    element - EL_EMC_GATE_5_GRAY_ACTIVE + EL_EMC_GATE_5_GRAY :
+                   IS_DC_GATE_GRAY_ACTIVE(element) ?
+                   EL_DC_GATE_WHITE_GRAY :
                    element);
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
   }
 }
@@ -6304,7 +6699,7 @@ static void ActivateTimegateSwitch(int x, int y)
     else if (element == EL_TIMEGATE_SWITCH_ACTIVE)
     {
       Feld[xx][yy] = EL_TIMEGATE_SWITCH;
-      DrawLevelField(xx, yy);
+      TEST_DrawLevelField(xx, yy);
     }
     */
 
@@ -6346,7 +6741,7 @@ void Impact(int x, int y)
       RemoveMovingField(x, y + 1);
       Feld[x][y + 1] = EL_QUICKSAND_EMPTY;
       Feld[x][y + 2] = EL_ROCK;
-      DrawLevelField(x, y + 2);
+      TEST_DrawLevelField(x, y + 2);
 
       object_hit = TRUE;
     }
@@ -6356,7 +6751,7 @@ void Impact(int x, int y)
       RemoveMovingField(x, y + 1);
       Feld[x][y + 1] = EL_QUICKSAND_FAST_EMPTY;
       Feld[x][y + 2] = EL_ROCK;
-      DrawLevelField(x, y + 2);
+      TEST_DrawLevelField(x, y + 2);
 
       object_hit = TRUE;
     }
@@ -6380,7 +6775,7 @@ void Impact(int x, int y)
       el_act_dir2img(element, GfxAction[x][y], MV_DOWN) != el2img(element))
   {
     ResetGfxAnimation(x, y);
-    DrawLevelField(x, y);
+    TEST_DrawLevelField(x, y);
   }
 
   if (impact && CAN_EXPLODE_IMPACT(element))
@@ -6854,7 +7249,7 @@ inline static void TurnRoundExt(int x, int y)
       {
        Feld[move_x][move_y] = EL_EMC_SPRING_BUMPER_ACTIVE;
        ResetGfxAnimation(move_x, move_y);
-       DrawLevelField(move_x, move_y);
+       TEST_DrawLevelField(move_x, move_y);
 
        MovDir[x][y] = back_dir;
       }
@@ -7471,10 +7866,18 @@ void StartMoving(int x, int y)
       else if (Feld[x][y + 1] == EL_QUICKSAND_EMPTY)
       {
        if (!MovDelay[x][y])
+       {
          MovDelay[x][y] = TILEY + 1;
 
+         ResetGfxAnimation(x, y);
+         ResetGfxAnimation(x, y + 1);
+       }
+
        if (MovDelay[x][y])
        {
+         DrawLevelElement(x, y, EL_QUICKSAND_EMPTYING);
+         DrawLevelElement(x, y + 1, EL_QUICKSAND_FILLING);
+
          MovDelay[x][y]--;
          if (MovDelay[x][y])
            return;
@@ -7485,6 +7888,33 @@ void StartMoving(int x, int y)
        Store[x][y + 1] = Store[x][y];
        Store[x][y] = 0;
 
+       PlayLevelSoundAction(x, y, ACTION_FILLING);
+      }
+      else if (Feld[x][y + 1] == EL_QUICKSAND_FAST_EMPTY)
+      {
+       if (!MovDelay[x][y])
+       {
+         MovDelay[x][y] = TILEY + 1;
+
+         ResetGfxAnimation(x, y);
+         ResetGfxAnimation(x, y + 1);
+       }
+
+       if (MovDelay[x][y])
+       {
+         DrawLevelElement(x, y, EL_QUICKSAND_EMPTYING);
+         DrawLevelElement(x, y + 1, EL_QUICKSAND_FAST_FILLING);
+
+         MovDelay[x][y]--;
+         if (MovDelay[x][y])
+           return;
+       }
+
+       Feld[x][y] = EL_QUICKSAND_EMPTY;
+       Feld[x][y + 1] = EL_QUICKSAND_FAST_FULL;
+       Store[x][y + 1] = Store[x][y];
+       Store[x][y] = 0;
+
        PlayLevelSoundAction(x, y, ACTION_FILLING);
       }
     }
@@ -7508,10 +7938,18 @@ void StartMoving(int x, int y)
       else if (Feld[x][y + 1] == EL_QUICKSAND_FAST_EMPTY)
       {
        if (!MovDelay[x][y])
+       {
          MovDelay[x][y] = TILEY + 1;
 
+         ResetGfxAnimation(x, y);
+         ResetGfxAnimation(x, y + 1);
+       }
+
        if (MovDelay[x][y])
        {
+         DrawLevelElement(x, y, EL_QUICKSAND_FAST_EMPTYING);
+         DrawLevelElement(x, y + 1, EL_QUICKSAND_FAST_FILLING);
+
          MovDelay[x][y]--;
          if (MovDelay[x][y])
            return;
@@ -7524,20 +7962,47 @@ void StartMoving(int x, int y)
 
        PlayLevelSoundAction(x, y, ACTION_FILLING);
       }
-    }
-    else if ((element == EL_ROCK || element == EL_BD_ROCK) &&
-            Feld[x][y + 1] == EL_QUICKSAND_EMPTY)
-    {
-      InitMovingField(x, y, MV_DOWN);
-      started_moving = TRUE;
+      else if (Feld[x][y + 1] == EL_QUICKSAND_EMPTY)
+      {
+       if (!MovDelay[x][y])
+       {
+         MovDelay[x][y] = TILEY + 1;
 
-      Feld[x][y] = EL_QUICKSAND_FILLING;
-      Store[x][y] = element;
+         ResetGfxAnimation(x, y);
+         ResetGfxAnimation(x, y + 1);
+       }
 
-      PlayLevelSoundAction(x, y, ACTION_FILLING);
-    }
-    else if ((element == EL_ROCK || element == EL_BD_ROCK) &&
-            Feld[x][y + 1] == EL_QUICKSAND_FAST_EMPTY)
+       if (MovDelay[x][y])
+       {
+         DrawLevelElement(x, y, EL_QUICKSAND_FAST_EMPTYING);
+         DrawLevelElement(x, y + 1, EL_QUICKSAND_FILLING);
+
+         MovDelay[x][y]--;
+         if (MovDelay[x][y])
+           return;
+       }
+
+       Feld[x][y] = EL_QUICKSAND_FAST_EMPTY;
+       Feld[x][y + 1] = EL_QUICKSAND_FULL;
+       Store[x][y + 1] = Store[x][y];
+       Store[x][y] = 0;
+
+       PlayLevelSoundAction(x, y, ACTION_FILLING);
+      }
+    }
+    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;
+
+      PlayLevelSoundAction(x, y, ACTION_FILLING);
+    }
+    else if ((element == EL_ROCK || element == EL_BD_ROCK) &&
+            Feld[x][y + 1] == EL_QUICKSAND_FAST_EMPTY)
     {
       InitMovingField(x, y, MV_DOWN);
       started_moving = TRUE;
@@ -7889,7 +8354,7 @@ void StartMoving(int x, int y)
                               element == EL_SP_SNIKSNAK ||
                               element == EL_SP_ELECTRON ||
                               element == EL_MOLE))
-         DrawLevelField(x, y);
+         TEST_DrawLevelField(x, y);
       }
     }
 
@@ -7923,7 +8388,7 @@ void StartMoving(int x, int y)
        if (IS_PLAYER(x, y))
          DrawPlayerField(x, y);
        else
-         DrawLevelField(x, y);
+         TEST_DrawLevelField(x, y);
 
        PlayLevelSoundActionIfLoop(x, y, ACTION_ATTACKING);
 
@@ -7963,7 +8428,7 @@ void StartMoving(int x, int y)
 
            if (IN_SCR_FIELD(sx, sy))
            {
-             DrawLevelFieldCrumbledSand(xx, yy);
+             TEST_DrawLevelFieldCrumbledSand(xx, yy);
              DrawGraphic(sx, sy, flame_graphic, frame);
            }
          }
@@ -7971,7 +8436,7 @@ void StartMoving(int x, int y)
          {
            if (Feld[xx][yy] == EL_FLAMES)
              Feld[xx][yy] = EL_EMPTY;
-           DrawLevelField(xx, yy);
+           TEST_DrawLevelField(xx, yy);
          }
        }
       }
@@ -8014,7 +8479,7 @@ void StartMoving(int x, int y)
          Feld[newx][newy] == EL_EM_STEEL_EXIT_OPEN)
       {
        RemoveField(x, y);
-       DrawLevelField(x, y);
+       TEST_DrawLevelField(x, y);
 
        PlayLevelSound(newx, newy, SND_PENGUIN_PASSING);
        if (IN_SCR_FIELD(SCREENX(newx), SCREENY(newy)))
@@ -8030,7 +8495,7 @@ void StartMoving(int x, int y)
       else if (IS_FOOD_PENGUIN(Feld[newx][newy]))
       {
        if (DigField(local_player, x, y, newx, newy, 0,0, DF_DIG) == MP_MOVING)
-         DrawLevelField(newx, newy);
+         TEST_DrawLevelField(newx, newy);
        else
          GfxDir[x][y] = MovDir[x][y] = MV_NONE;
       }
@@ -8041,7 +8506,7 @@ void StartMoving(int x, int y)
        if (IS_PLAYER(x, y))
          DrawPlayerField(x, y);
        else
-         DrawLevelField(x, y);
+         TEST_DrawLevelField(x, y);
 
        return;
       }
@@ -8055,7 +8520,7 @@ void StartMoving(int x, int y)
        else
        {
          Feld[newx][newy] = EL_EMPTY;
-         DrawLevelField(newx, newy);
+         TEST_DrawLevelField(newx, newy);
        }
 
        PlayLevelSound(x, y, SND_PIG_DIGGING);
@@ -8065,7 +8530,7 @@ void StartMoving(int x, int y)
        if (IS_PLAYER(x, y))
          DrawPlayerField(x, y);
        else
-         DrawLevelField(x, y);
+         TEST_DrawLevelField(x, y);
 
        return;
       }
@@ -8144,7 +8609,7 @@ void StartMoving(int x, int y)
        else
        {
          Feld[newx][newy] = EL_EMPTY;
-         DrawLevelField(newx, newy);
+         TEST_DrawLevelField(newx, newy);
 
          PlayLevelSoundAction(x, y, ACTION_DIGGING);
        }
@@ -8155,7 +8620,7 @@ void StartMoving(int x, int y)
        if (IS_PLAYER(x, y))
          DrawPlayerField(x, y);
        else
-         DrawLevelField(x, y);
+         TEST_DrawLevelField(x, y);
 #endif
 
        return;
@@ -8164,6 +8629,10 @@ void StartMoving(int x, int y)
     else if (IS_CUSTOM_ELEMENT(element) &&
             CUSTOM_ELEMENT_CAN_ENTER_FIELD(element, newx, newy))
     {
+#if 1
+      if (!DigFieldByCE(newx, newy, element))
+       return;
+#else
       int new_element = Feld[newx][newy];
 
       if (!IS_FREE(newx, newy))
@@ -8192,7 +8661,7 @@ void StartMoving(int x, int y)
        else
        {
          RemoveField(newx, newy);
-         DrawLevelField(newx, newy);
+         TEST_DrawLevelField(newx, newy);
        }
 
        /* if digged element was about to explode, prevent the explosion */
@@ -8202,6 +8671,7 @@ void StartMoving(int x, int y)
       }
 
       Store[newx][newy] = EL_EMPTY;
+
 #if 1
       /* this makes it possible to leave the removed element again */
       if (IS_EQUAL_OR_IN_GROUP(new_element, MOVE_ENTER_EL(element)))
@@ -8215,6 +8685,8 @@ void StartMoving(int x, int y)
        Store[newx][newy] = (move_leave_element == EL_TRIGGER_ELEMENT ?
                             new_element : move_leave_element);
       }
+#endif
+
 #endif
 
       if (move_pattern & MV_MAZE_RUNNER_STYLE)
@@ -8230,7 +8702,7 @@ void StartMoving(int x, int y)
        if (IS_PLAYER(x, y))
          DrawPlayerField(x, y);
        else
-         DrawLevelField(x, y);
+         TEST_DrawLevelField(x, y);
 
        return;
       }
@@ -8257,7 +8729,7 @@ void StartMoving(int x, int y)
          if (IS_PLAYER(x, y))
            DrawPlayerField(x, y);
          else
-           DrawLevelField(x, y);
+           TEST_DrawLevelField(x, y);
 
          PlayLevelSound(x, y, SND_DRAGON_ATTACKING);
 
@@ -8295,7 +8767,7 @@ void StartMoving(int x, int y)
       else
       {
        Feld[newx][newy] = EL_EMPTY;
-       DrawLevelField(newx, newy);
+       TEST_DrawLevelField(newx, newy);
       }
 
       PlayLevelSound(x, y, SND_YAMYAM_DIGGING);
@@ -8326,7 +8798,7 @@ void StartMoving(int x, int y)
       else
       {
        Feld[newx][newy] = EL_EMPTY;
-       DrawLevelField(newx, newy);
+       TEST_DrawLevelField(newx, newy);
       }
 
       PlayLevelSound(x, y, SND_DARK_YAMYAM_DIGGING);
@@ -8349,7 +8821,7 @@ void StartMoving(int x, int y)
 
        ResetGfxAnimation(x, y);
        GfxAction[x][y] = ACTION_DIGGING;
-       DrawLevelField(x, y);
+       TEST_DrawLevelField(x, y);
 
        MovDelay[newx][newy] = 0;       /* start amoeba shrinking delay */
 
@@ -8358,7 +8830,7 @@ void StartMoving(int x, int y)
       else     /* element == EL_PACMAN */
       {
        Feld[newx][newy] = EL_EMPTY;
-       DrawLevelField(newx, newy);
+       TEST_DrawLevelField(newx, newy);
        PlayLevelSound(x, y, SND_PACMAN_DIGGING);
       }
     }
@@ -8440,7 +8912,7 @@ void ContinueMoving(int x, int y)
           GfxAction[x][y], GfxDir[x][y], GfxFrame[x][y]);
 #endif
 
-    DrawLevelField(x, y);
+    TEST_DrawLevelField(x, y);
 
     return;    /* element is still moving */
   }
@@ -8459,7 +8931,7 @@ void ContinueMoving(int x, int y)
   {
     Feld[x][y] = EL_SAND;
 
-    DrawLevelFieldCrumbledSandNeighbours(x, y);
+    TEST_DrawLevelFieldCrumbledSandNeighbours(x, y);
   }
   else if (element == EL_QUICKSAND_FILLING)
   {
@@ -8568,7 +9040,7 @@ void ContinueMoving(int x, int y)
   }
 
 #if USE_NEW_CUSTOM_VALUE
-    CustomValue[newx][newy] = CustomValue[x][y];
+  CustomValue[newx][newy] = CustomValue[x][y];
 #endif
 
   ChangeDelay[x][y] = 0;
@@ -8626,7 +9098,7 @@ void ContinueMoving(int x, int y)
     InitField(x, y, FALSE);
 
     if (GFX_CRUMBLED(Feld[x][y]))
-      DrawLevelFieldCrumbledSandNeighbours(x, y);
+      TEST_DrawLevelFieldCrumbledSandNeighbours(x, y);
 
     if (ELEM_IS_PLAYER(move_leave_element))
       RelocatePlayer(x, y, move_leave_element);
@@ -8642,8 +9114,8 @@ void ContinueMoving(int x, int y)
        element_info[element].move_pattern == MV_WHEN_DROPPED)))
     GfxDir[x][y] = MovDir[newx][newy] = 0;
 
-  DrawLevelField(x, y);
-  DrawLevelField(newx, newy);
+  TEST_DrawLevelField(x, y);
+  TEST_DrawLevelField(newx, newy);
 
   Stop[newx][newy] = TRUE;     /* ignore this element until the next frame */
 
@@ -8688,6 +9160,11 @@ void ContinueMoving(int x, int y)
   else if (element == EL_PENGUIN)
     TestIfFriendTouchesBadThing(newx, newy);
 
+  if (DONT_GET_HIT_BY(element))
+  {
+    TestIfGoodThingGetsHitByBadThing(newx, newy, direction);
+  }
+
   /* give the player one last chance (one more frame) to move away */
   if (CAN_FALL(element) && direction == MV_DOWN &&
       (last_line || (!IS_FREE(x, newy + 1) &&
@@ -8905,7 +9382,7 @@ void AmoebeUmwandelnBD(int ax, int ay, int new_element)
       AmoebaNr[x][y] = 0;
       Feld[x][y] = new_element;
       InitField(x, y, FALSE);
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
       done = TRUE;
     }
   }
@@ -8947,7 +9424,7 @@ void AmoebeWaechst(int x, int y)
     {
       Feld[x][y] = Store[x][y];
       Store[x][y] = 0;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
   }
 }
@@ -8979,7 +9456,7 @@ void AmoebaDisappearing(int x, int y)
     if (!MovDelay[x][y])
     {
       Feld[x][y] = EL_EMPTY;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
 
       /* don't let mole enter this field in this cycle;
         (give priority to objects falling to this field from above) */
@@ -9006,7 +9483,7 @@ void AmoebeAbleger(int ax, int ay)
   if (!level.amoeba_speed && element != EL_EMC_DRIPPER)
   {
     Feld[ax][ay] = EL_AMOEBA_DEAD;
-    DrawLevelField(ax, ay);
+    TEST_DrawLevelField(ax, ay);
     return;
   }
 
@@ -9076,7 +9553,7 @@ void AmoebeAbleger(int ax, int ay)
       if (i == 4 && (!waiting_for_player || element == EL_BD_AMOEBA))
       {
        Feld[ax][ay] = EL_AMOEBA_DEAD;
-       DrawLevelField(ax, ay);
+       TEST_DrawLevelField(ax, ay);
        AmoebaCnt[AmoebaNr[ax][ay]]--;
 
        if (AmoebaCnt[AmoebaNr[ax][ay]] <= 0)   /* amoeba is completely dead */
@@ -9140,7 +9617,7 @@ void AmoebeAbleger(int ax, int ay)
     return;
   }
 
-  DrawLevelField(newax, neway);
+  TEST_DrawLevelField(newax, neway);
 }
 
 void Life(int ax, int ay)
@@ -9198,7 +9675,7 @@ void Life(int ax, int ay)
       {
        Feld[xx][yy] = EL_EMPTY;
        if (!Stop[xx][yy])
-         DrawLevelField(xx, yy);
+         TEST_DrawLevelField(xx, yy);
        Stop[xx][yy] = TRUE;
        changed = TRUE;
       }
@@ -9211,7 +9688,7 @@ void Life(int ax, int ay)
        Feld[xx][yy] = element;
        MovDelay[xx][yy] = (element == EL_GAME_OF_LIFE ? 0 : life_time-1);
        if (!Stop[xx][yy])
-         DrawLevelField(xx, yy);
+         TEST_DrawLevelField(xx, yy);
        Stop[xx][yy] = TRUE;
        changed = TRUE;
       }
@@ -9439,9 +9916,6 @@ void DrawTwinkleOnField(int x, int y)
   {
     MovDelay[x][y]--;
 
-    if (setup.direct_draw && MovDelay[x][y])
-      SetDrawtoField(DRAW_BUFFERED);
-
     DrawLevelElementAnimation(x, y, Feld[x][y]);
 
     if (MovDelay[x][y] != 0)
@@ -9450,18 +9924,6 @@ void DrawTwinkleOnField(int x, int y)
                                           10 - MovDelay[x][y]);
 
       DrawGraphicThruMask(SCREENX(x), SCREENY(y), IMG_TWINKLE_WHITE, frame);
-
-      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);
-      }
     }
   }
 }
@@ -9490,28 +9952,28 @@ void MauerWaechst(int x, int y)
       if (MovDir[x][y] == MV_LEFT)
       {
        if (IN_LEV_FIELD(x - 1, y) && IS_WALL(Feld[x - 1][y]))
-         DrawLevelField(x - 1, y);
+         TEST_DrawLevelField(x - 1, y);
       }
       else if (MovDir[x][y] == MV_RIGHT)
       {
        if (IN_LEV_FIELD(x + 1, y) && IS_WALL(Feld[x + 1][y]))
-         DrawLevelField(x + 1, y);
+         TEST_DrawLevelField(x + 1, y);
       }
       else if (MovDir[x][y] == MV_UP)
       {
        if (IN_LEV_FIELD(x, y - 1) && IS_WALL(Feld[x][y - 1]))
-         DrawLevelField(x, y - 1);
+         TEST_DrawLevelField(x, y - 1);
       }
       else
       {
        if (IN_LEV_FIELD(x, y + 1) && IS_WALL(Feld[x][y + 1]))
-         DrawLevelField(x, y + 1);
+         TEST_DrawLevelField(x, y + 1);
       }
 
       Feld[x][y] = Store[x][y];
       Store[x][y] = 0;
       GfxDir[x][y] = MovDir[x][y] = MV_NONE;
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
   }
 }
@@ -9602,7 +10064,7 @@ void MauerAbleger(int ax, int ay)
   }
 
   if (element == EL_EXPANDABLE_WALL && (links_frei || rechts_frei))
-    DrawLevelField(ax, ay);
+    TEST_DrawLevelField(ax, ay);
 
   if (!IN_LEV_FIELD(ax, ay-1) || IS_WALL(Feld[ax][ay-1]))
     oben_massiv = TRUE;
@@ -9720,7 +10182,7 @@ void MauerAblegerStahl(int ax, int ay)
        element == EL_EXPANDABLE_STEELWALL_HORIZONTAL) &&
       ((links_massiv && rechts_massiv) ||
        element == EL_EXPANDABLE_STEELWALL_VERTICAL))
-    Feld[ax][ay] = EL_WALL;
+    Feld[ax][ay] = EL_STEELWALL;
 
   if (new_wall)
     PlayLevelSoundAction(ax, ay, ACTION_GROWING);
@@ -9766,7 +10228,7 @@ void CheckForDragon(int x, int y)
        if (IN_LEV_FIELD(xx, yy) && Feld[xx][yy] == EL_FLAMES)
        {
          Feld[xx][yy] = EL_EMPTY;
-         DrawLevelField(xx, yy);
+         TEST_DrawLevelField(xx, yy);
        }
        else
          break;
@@ -9830,7 +10292,7 @@ static void ChangeActiveTrap(int x, int y)
 
   /* if new animation frame was drawn, correct crumbled sand border */
   if (IS_NEW_FRAME(GfxFrame[x][y], graphic))
-    DrawLevelFieldCrumbledSand(x, y);
+    TEST_DrawLevelFieldCrumbledSand(x, y);
 }
 
 static int getSpecialActionElement(int element, int number, int base_element)
@@ -9864,6 +10326,7 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
   int action_type = change->action_type;
   int action_mode = change->action_mode;
   int action_arg = change->action_arg;
+  int action_element = change->action_element;
   int i;
 
   if (!change->has_action)
@@ -9875,11 +10338,21 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
     (level.time > 0 ? TimeLeft :
      TimePlayed);
 
-  int action_arg_element =
+  int action_arg_element_raw =
     (action_arg == CA_ARG_PLAYER_TRIGGER  ? change->actual_trigger_player :
      action_arg == CA_ARG_ELEMENT_TRIGGER ? change->actual_trigger_element :
      action_arg == CA_ARG_ELEMENT_TARGET  ? change->target_element :
+     action_arg == CA_ARG_ELEMENT_ACTION  ? change->action_element :
+     action_arg == CA_ARG_INVENTORY_RM_TRIGGER ? change->actual_trigger_element:
+     action_arg == CA_ARG_INVENTORY_RM_TARGET  ? change->target_element :
+     action_arg == CA_ARG_INVENTORY_RM_ACTION  ? change->action_element :
      EL_EMPTY);
+  int action_arg_element = GetElementFromGroupElement(action_arg_element_raw);
+
+#if 0
+  if (action_arg_element_raw == EL_GROUP_START)
+    printf("::: %d,%d: %d ('%s')\n", x, y, element, EL_NAME(element));
+#endif
 
   int action_arg_direction =
     (action_arg >= CA_ARG_DIRECTION_LEFT &&
@@ -9936,10 +10409,13 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
      action_arg == CA_ARG_NUMBER_LEVEL_SCORE ? local_player->score :
      action_arg == CA_ARG_ELEMENT_CV_TARGET ? GET_NEW_CE_VALUE(target_element):
      action_arg == CA_ARG_ELEMENT_CV_TRIGGER ? change->actual_trigger_ce_value:
+     action_arg == CA_ARG_ELEMENT_CV_ACTION ? GET_NEW_CE_VALUE(action_element):
      action_arg == CA_ARG_ELEMENT_CS_TARGET ? GET_CE_SCORE(target_element) :
      action_arg == CA_ARG_ELEMENT_CS_TRIGGER ? change->actual_trigger_ce_score:
+     action_arg == CA_ARG_ELEMENT_CS_ACTION ? GET_CE_SCORE(action_element) :
      action_arg == CA_ARG_ELEMENT_NR_TARGET  ? change->target_element :
      action_arg == CA_ARG_ELEMENT_NR_TRIGGER ? change->actual_trigger_element :
+     action_arg == CA_ARG_ELEMENT_NR_ACTION  ? change->action_element :
      -1);
 
   int action_arg_number_old =
@@ -9955,16 +10431,23 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
                            action_mode, action_arg_number,
                            action_arg_number_min, action_arg_number_max);
 
+#if 1
+  int trigger_player_bits =
+    (change->actual_trigger_player_bits != CH_PLAYER_NONE ?
+     change->actual_trigger_player_bits : change->trigger_player);
+#else
   int trigger_player_bits =
     (change->actual_trigger_player >= EL_PLAYER_1 &&
      change->actual_trigger_player <= EL_PLAYER_4 ?
      (1 << (change->actual_trigger_player - EL_PLAYER_1)) :
      PLAYER_BITS_ANY);
+#endif
 
   int action_arg_player_bits =
     (action_arg >= CA_ARG_PLAYER_1 &&
      action_arg <= CA_ARG_PLAYER_4 ? action_arg - CA_ARG_PLAYER :
      action_arg == CA_ARG_PLAYER_TRIGGER ? trigger_player_bits :
+     action_arg == CA_ARG_PLAYER_ACTION ? 1 << GET_PLAYER_NR(action_element) :
      PLAYER_BITS_ANY);
 
   /* ---------- execute action  -------------------------------------------- */
@@ -10066,6 +10549,33 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
       break;
     }
 
+    case CA_SET_LEVEL_RANDOM_SEED:
+    {
+#if 1
+      /* ensure that setting a new random seed while playing is predictable */
+      InitRND(action_arg_number_new ? action_arg_number_new : RND(1000000) + 1);
+#else
+      InitRND(action_arg_number_new);
+#endif
+
+#if 0
+      printf("::: %d -> %d\n", action_arg_number_new, RND(10));
+#endif
+
+#if 0
+      {
+       int i;
+
+       printf("::: ");
+       for (i = 0; i < 9; i++)
+         printf("%d, ", RND(2));
+       printf("\n");
+      }
+#endif
+
+      break;
+    }
+
     /* ---------- player actions  ------------------------------------------ */
 
     case CA_MOVE_PLAYER:
@@ -10120,6 +10630,10 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
 
     case CA_SET_PLAYER_SPEED:
     {
+#if 0
+      printf("::: trigger_player_bits == %d\n", trigger_player_bits);
+#endif
+
       for (i = 0; i < MAX_PLAYERS; i++)
       {
        if (trigger_player_bits & (1 << i))
@@ -10237,6 +10751,104 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
       break;
     }
 
+    case CA_SET_PLAYER_INVENTORY:
+    {
+      for (i = 0; i < MAX_PLAYERS; i++)
+      {
+       struct PlayerInfo *player = &stored_player[i];
+       int j, k;
+
+       if (trigger_player_bits & (1 << i))
+       {
+         int inventory_element = action_arg_element;
+
+         if (action_arg == CA_ARG_ELEMENT_TARGET ||
+             action_arg == CA_ARG_ELEMENT_TRIGGER ||
+             action_arg == CA_ARG_ELEMENT_ACTION)
+         {
+           int element = inventory_element;
+           int collect_count = element_info[element].collect_count_initial;
+
+           if (!IS_CUSTOM_ELEMENT(element))
+             collect_count = 1;
+
+           if (collect_count == 0)
+             player->inventory_infinite_element = element;
+           else
+             for (k = 0; k < collect_count; k++)
+               if (player->inventory_size < MAX_INVENTORY_SIZE)
+                 player->inventory_element[player->inventory_size++] =
+                   element;
+         }
+         else if (action_arg == CA_ARG_INVENTORY_RM_TARGET ||
+                  action_arg == CA_ARG_INVENTORY_RM_TRIGGER ||
+                  action_arg == CA_ARG_INVENTORY_RM_ACTION)
+         {
+           if (player->inventory_infinite_element != EL_UNDEFINED &&
+               IS_EQUAL_OR_IN_GROUP(player->inventory_infinite_element,
+                                    action_arg_element_raw))
+             player->inventory_infinite_element = EL_UNDEFINED;
+
+           for (k = 0, j = 0; j < player->inventory_size; j++)
+           {
+             if (!IS_EQUAL_OR_IN_GROUP(player->inventory_element[j],
+                                       action_arg_element_raw))
+               player->inventory_element[k++] = player->inventory_element[j];
+           }
+
+           player->inventory_size = k;
+         }
+         else if (action_arg == CA_ARG_INVENTORY_RM_FIRST)
+         {
+           if (player->inventory_size > 0)
+           {
+             for (j = 0; j < player->inventory_size - 1; j++)
+               player->inventory_element[j] = player->inventory_element[j + 1];
+
+             player->inventory_size--;
+           }
+         }
+         else if (action_arg == CA_ARG_INVENTORY_RM_LAST)
+         {
+           if (player->inventory_size > 0)
+             player->inventory_size--;
+         }
+         else if (action_arg == CA_ARG_INVENTORY_RM_ALL)
+         {
+           player->inventory_infinite_element = EL_UNDEFINED;
+           player->inventory_size = 0;
+         }
+         else if (action_arg == CA_ARG_INVENTORY_RESET)
+         {
+           player->inventory_infinite_element = EL_UNDEFINED;
+           player->inventory_size = 0;
+
+           if (level.use_initial_inventory[i])
+           {
+             for (j = 0; j < level.initial_inventory_size[i]; j++)
+             {
+               int element = level.initial_inventory_content[i][j];
+               int collect_count = element_info[element].collect_count_initial;
+
+               if (!IS_CUSTOM_ELEMENT(element))
+                 collect_count = 1;
+
+               if (collect_count == 0)
+                 player->inventory_infinite_element = element;
+               else
+                 for (k = 0; k < collect_count; k++)
+                   if (player->inventory_size < MAX_INVENTORY_SIZE)
+                     player->inventory_element[player->inventory_size++] =
+                       element;
+             }
+           }
+         }
+       }
+      }
+
+      break;
+    }
+
     /* ---------- CE actions  ---------------------------------------------- */
 
     case CA_SET_CE_VALUE:
@@ -10305,6 +10917,38 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
       break;
     }
 
+    case CA_SET_CE_ARTWORK:
+    {
+      int artwork_element = action_arg_element;
+      boolean reset_frame = FALSE;
+      int xx, yy;
+
+      if (action_arg == CA_ARG_ELEMENT_RESET)
+       artwork_element = (ei->use_gfx_element ? ei->gfx_element_initial :
+                          element);
+
+      if (ei->gfx_element != artwork_element)
+       reset_frame = TRUE;
+
+      ei->gfx_element = artwork_element;
+
+      SCAN_PLAYFIELD(xx, yy)
+      {
+       if (Feld[xx][yy] == element)
+       {
+         if (reset_frame)
+         {
+           ResetGfxAnimation(xx, yy);
+           ResetRandomAnimationValue(xx, yy);
+         }
+
+         TEST_DrawLevelField(xx, yy);
+       }
+      }
+
+      break;
+    }
+
     /* ---------- engine actions  ------------------------------------------ */
 
     case CA_SET_ENGINE_SCAN_MODE:
@@ -10381,10 +11025,10 @@ static void CreateFieldExt(int x, int y, int element, boolean is_change)
     ResetRandomAnimationValue(x, y);
 #endif
 
-    DrawLevelField(x, y);
+    TEST_DrawLevelField(x, y);
 
     if (GFX_CRUMBLED(new_element))
-      DrawLevelFieldCrumbledSandNeighbours(x, y);
+      TEST_DrawLevelFieldCrumbledSandNeighbours(x, y);
   }
 
 #if 1
@@ -10464,7 +11108,8 @@ static boolean ChangeElement(int x, int y, int element, int page)
   {
     /* reset actual trigger element, trigger player and action element */
     change->actual_trigger_element = EL_EMPTY;
-    change->actual_trigger_player = EL_PLAYER_1;
+    change->actual_trigger_player = EL_EMPTY;
+    change->actual_trigger_player_bits = CH_PLAYER_NONE;
     change->actual_trigger_side = CH_SIDE_NONE;
     change->actual_trigger_ce_value = 0;
     change->actual_trigger_ce_score = 0;
@@ -10624,6 +11269,7 @@ static void HandleElementChange(int x, int y, int page)
   int element = MovingOrBlocked2Element(x, y);
   struct ElementInfo *ei = &element_info[element];
   struct ElementChangeInfo *change = &ei->change_page[page];
+  boolean handle_action_before_change = FALSE;
 
 #ifdef DEBUG
   if (!CAN_CHANGE_OR_HAS_ACTION(element) &&
@@ -10706,6 +11352,15 @@ static void HandleElementChange(int x, int y, int page)
       return;
     }
 
+#if 1
+    /* special case: set new level random seed before changing element */
+    if (change->has_action && change->action_type == CA_SET_LEVEL_RANDOM_SEED)
+      handle_action_before_change = TRUE;
+
+    if (change->has_action && handle_action_before_change)
+      ExecuteCustomElementAction(x, y, element, page);
+#endif
+
     if (change->can_change)
     {
       if (ChangeElement(x, y, element, page))
@@ -10715,7 +11370,7 @@ static void HandleElementChange(int x, int y, int page)
       }
     }
 
-    if (change->has_action)
+    if (change->has_action && !handle_action_before_change)
       ExecuteCustomElementAction(x, y, element, page);
   }
 }
@@ -10845,11 +11500,17 @@ static boolean CheckTriggeredElementChangeExt(int trigger_x, int trigger_y,
          IS_EQUAL_OR_IN_GROUP(trigger_element, change->trigger_element))
       {
        change->actual_trigger_element = trigger_element;
-       change->actual_trigger_player = EL_PLAYER_1 + log_2(trigger_player);
+       change->actual_trigger_player = GET_PLAYER_FROM_BITS(trigger_player);
+       change->actual_trigger_player_bits = trigger_player;
        change->actual_trigger_side = trigger_side;
        change->actual_trigger_ce_value = CustomValue[trigger_x][trigger_y];
        change->actual_trigger_ce_score = GET_CE_SCORE(trigger_element);
 
+#if 0
+       printf("::: TRIGGERED CHANGE FOUND: %d ['%s'], %d\n",
+              element, EL_NAME(element), p);
+#endif
+
        if ((change->can_change && !change_done) || change->has_action)
        {
          int x, y;
@@ -10860,6 +11521,21 @@ static boolean CheckTriggeredElementChangeExt(int trigger_x, int trigger_y,
            {
              if (change->can_change && !change_done)
              {
+#if USE_FIX_NO_ACTION_AFTER_CHANGE
+               /* if element already changed in this frame, not only prevent
+                  another element change (checked in ChangeElement()), but
+                  also prevent additional element actions for this element */
+
+               if (ChangeCount[x][y] >= game.max_num_changes_per_frame &&
+                   !level.use_action_after_change_bug)
+                 continue;
+#endif
+
+#if 0
+               printf("::: TRIGGERED CHANGE FOUND: %d ['%s'], %d -- CHANGE\n",
+                      element, EL_NAME(element), p);
+#endif
+
                ChangeDelay[x][y] = 1;
                ChangeEvent[x][y] = trigger_event;
 
@@ -10868,6 +11544,22 @@ static boolean CheckTriggeredElementChangeExt(int trigger_x, int trigger_y,
 #if USE_NEW_DELAYED_ACTION
              else if (change->has_action)
              {
+#if USE_FIX_NO_ACTION_AFTER_CHANGE
+               /* if element already changed in this frame, not only prevent
+                  another element change (checked in ChangeElement()), but
+                  also prevent additional element actions for this element */
+
+               if (ChangeCount[x][y] >= game.max_num_changes_per_frame &&
+                   !level.use_action_after_change_bug)
+                 continue;
+#endif
+
+
+#if 0
+               printf("::: TRIGGERED CHANGE FOUND: %d ['%s'], %d -- ACTION\n",
+                      element, EL_NAME(element), p);
+#endif
+
                ExecuteCustomElementAction(x, y, element, p);
                PlayLevelSoundElementAction(x, y, element, ACTION_PAGE_1 + p);
              }
@@ -10885,6 +11577,12 @@ static boolean CheckTriggeredElementChangeExt(int trigger_x, int trigger_y,
          {
            change_done = TRUE;
            change_done_any = TRUE;
+
+#if 0
+           printf("::: TRIGGERED CHANGE FOUND: %d ['%s'], %d -- DONE\n",
+                  element, EL_NAME(element), p);
+#endif
+
          }
        }
       }
@@ -10939,6 +11637,10 @@ static boolean CheckElementChangeExt(int x, int y,
 
   RECURSION_LOOP_DETECTION_START(trigger_element, FALSE);
 
+#if 0
+  printf("::: X: trigger_player_bits == %d\n", trigger_player);
+#endif
+
   for (p = 0; p < element_info[element].num_change_pages; p++)
   {
     struct ElementChangeInfo *change = &element_info[element].change_page[p];
@@ -10964,7 +11666,8 @@ static boolean CheckElementChangeExt(int x, int y,
         IS_EQUAL_OR_IN_GROUP(trigger_element, change->trigger_element)))
     {
       change->actual_trigger_element = trigger_element;
-      change->actual_trigger_player = EL_PLAYER_1 + log_2(trigger_player);
+      change->actual_trigger_player = GET_PLAYER_FROM_BITS(trigger_player);
+      change->actual_trigger_player_bits = trigger_player;
       change->actual_trigger_side = trigger_side;
       change->actual_trigger_ce_value = CustomValue[x][y];
       change->actual_trigger_ce_score = GET_CE_SCORE(trigger_element);
@@ -11355,8 +12058,12 @@ static void CheckLevelTime()
       DrawVideoDisplay(VIDEO_STATE_TIME_ON, TapeTime);
   }
 
+#if 1
+  UpdateAndDisplayGameControlValues();
+#else
   UpdateGameDoorValues();
   DrawGameDoorValues();
+#endif
 }
 
 void AdvanceFrameAndPlayerCounters(int player_nr)
@@ -11459,7 +12166,7 @@ void GameActions()
   }
 
   if (game.restart_level)
-    StartGameActions(options.network, setup.autorecord, NEW_RANDOMIZE);
+    StartGameActions(options.network, setup.autorecord, level.random_seed);
 
   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
   {
@@ -11539,6 +12246,15 @@ void GameActions()
     game.set_centered_player = TRUE;
   }
 
+#if 0 /* USE_NEW_PLAYER_ASSIGNMENTS */
+  for (i = 0; i < MAX_PLAYERS; i++)
+  {
+    summarized_player_action |= stored_player[i].mapped_action;
+
+    if (!network_playing)
+      stored_player[i].effective_action = stored_player[i].mapped_action;
+  }
+#else
   for (i = 0; i < MAX_PLAYERS; i++)
   {
     summarized_player_action |= stored_player[i].action;
@@ -11546,6 +12262,7 @@ void GameActions()
     if (!network_playing)
       stored_player[i].effective_action = stored_player[i].action;
   }
+#endif
 
 #if defined(NETWORK_AVALIABLE)
   if (network_playing)
@@ -11562,13 +12279,25 @@ void GameActions()
        (i == game.centered_player_nr ? summarized_player_action : 0);
   }
 
+#if 0 /* USE_NEW_PLAYER_ASSIGNMENTS */
+  if (recorded_player_action != NULL)
+    for (i = 0; i < MAX_PLAYERS; i++)
+      stored_player[i].effective_action =
+       recorded_player_action[map_player_action[i]];
+#else
   if (recorded_player_action != NULL)
     for (i = 0; i < MAX_PLAYERS; i++)
-      stored_player[i].effective_action = recorded_player_action[i];
+      stored_player[i].effective_action =
+       recorded_player_action[i];
+#endif
 
   for (i = 0; i < MAX_PLAYERS; i++)
   {
+#if 0 /* USE_NEW_PLAYER_ASSIGNMENTS */
+    tape_action[i] = stored_player[i].action;
+#else
     tape_action[i] = stored_player[i].effective_action;
+#endif
 
     /* (this can only happen in the R'n'D game engine) */
     if (tape.recording && tape_action[i] && !tape.player_participates[i])
@@ -11579,6 +12308,37 @@ void GameActions()
   if (tape.recording)
     TapeRecordAction(tape_action);
 
+#if USE_NEW_PLAYER_ASSIGNMENTS
+  {
+#if 0
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+    stored_player[i].mapped_action = stored_player[map_player_action[i]].action;
+
+#else
+
+#if 1
+    byte unmapped_action[MAX_PLAYERS];
+
+    for (i = 0; i < MAX_PLAYERS; i++)
+      unmapped_action[i] = stored_player[i].effective_action;
+
+    for (i = 0; i < MAX_PLAYERS; i++)
+      stored_player[i].effective_action = unmapped_action[map_player_action[i]];
+#endif
+
+#if 0
+    for (i = 0; i < MAX_PLAYERS; i++)
+      printf("::: %d: %d [%d]\n", i, stored_player[i].effective_action,
+            map_player_action[i]);
+#endif
+#endif
+  }
+#else
+  for (i = 0; i < MAX_PLAYERS; i++)
+    stored_player[i].mapped_action = stored_player[i].action;
+#endif
+
   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
   {
     GameActions_EM_Main();
@@ -11745,7 +12505,7 @@ void GameActions_RND()
       if (MovDelay[x][y] <= 0)
       {
        RemoveField(x, y);
-       DrawLevelField(x, y);
+       TEST_DrawLevelField(x, y);
 
        TestIfElementTouchesCustomElement(x, y);        /* for empty space */
       }
@@ -11779,7 +12539,7 @@ void GameActions_RND()
     if (GfxAction[x][y] == ACTION_PUSHING && !IS_MOVING(x, y))
     {
       ResetGfxAnimation(x, y);
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
 
 #if DEBUG
@@ -11914,7 +12674,7 @@ void GameActions_RND()
        DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
 
       if (IS_GEM(element) || element == EL_SP_INFOTRON)
-       DrawTwinkleOnField(x, y);
+       TEST_DrawTwinkleOnField(x, y);
     }
     else if (IS_MOVING(x, y))
       ContinueMoving(x, y);
@@ -12049,7 +12809,7 @@ void GameActions_RND()
        DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
 
       if (IS_GEM(element) || element == EL_SP_INFOTRON)
-       DrawTwinkleOnField(x, y);
+       TEST_DrawTwinkleOnField(x, y);
     }
     else if ((element == EL_ACID ||
              element == EL_EXIT_OPEN ||
@@ -12234,19 +12994,19 @@ void GameActions_RND()
              element == EL_MAGIC_WALL_FULL)
          {
            Feld[x][y] = EL_MAGIC_WALL_DEAD;
-           DrawLevelField(x, y);
+           TEST_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);
+           TEST_DrawLevelField(x, y);
          }
          else if (element == EL_DC_MAGIC_WALL_ACTIVE ||
                   element == EL_DC_MAGIC_WALL_FULL)
          {
            Feld[x][y] = EL_DC_MAGIC_WALL_DEAD;
-           DrawLevelField(x, y);
+           TEST_DrawLevelField(x, y);
          }
        }
 
@@ -12300,6 +13060,36 @@ void GameActions_RND()
     }
   }
 
+#if USE_DELAYED_GFX_REDRAW
+  SCAN_PLAYFIELD(x, y)
+  {
+#if 1
+    if (GfxRedraw[x][y] != GFX_REDRAW_NONE)
+#else
+    if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)) &&
+       GfxRedraw[x][y] != GFX_REDRAW_NONE)
+#endif
+    {
+      /* !!! PROBLEM: THIS REDRAWS THE PLAYFIELD _AFTER_ THE SCAN, BUT TILES
+        !!! MAY HAVE CHANGED AFTER BEING DRAWN DURING PLAYFIELD SCAN !!! */
+
+      if (GfxRedraw[x][y] & GFX_REDRAW_TILE)
+       DrawLevelField(x, y);
+
+      if (GfxRedraw[x][y] & GFX_REDRAW_TILE_CRUMBLED)
+       DrawLevelFieldCrumbledSand(x, y);
+
+      if (GfxRedraw[x][y] & GFX_REDRAW_TILE_CRUMBLED_NEIGHBOURS)
+       DrawLevelFieldCrumbledSandNeighbours(x, y);
+
+      if (GfxRedraw[x][y] & GFX_REDRAW_TILE_TWINKLED)
+       DrawTwinkleOnField(x, y);
+    }
+
+    GfxRedraw[x][y] = GFX_REDRAW_NONE;
+  }
+#endif
+
   CheckLevelTime();
 
   DrawAllPlayers();
@@ -12384,12 +13174,13 @@ static boolean AllPlayersInVisibleScreen()
 
 void ScrollLevel(int dx, int dy)
 {
-#if 1
+#if 0
+  /* (directly solved in BlitBitmap() now) */
   static Bitmap *bitmap_db_field2 = NULL;
   int softscroll_offset = (setup.soft_scrolling ? TILEX : 0);
   int x, y;
 #else
-  int i, x, y;
+  int x, y;
 #endif
 
 #if 0
@@ -12399,7 +13190,8 @@ void ScrollLevel(int dx, int dy)
     return;
 #endif
 
-#if 1
+#if 0
+  /* (directly solved in BlitBitmap() now) */
   if (bitmap_db_field2 == NULL)
     bitmap_db_field2 = CreateBitmap(FXSIZE, FYSIZE, DEFAULT_DEPTH);
 
@@ -12422,7 +13214,7 @@ void ScrollLevel(int dx, int dy)
 
 #else
 
-#if 1
+#if 0
   /* !!! DOES NOT WORK FOR DIAGONAL PLAYER RELOCATION !!! */
   int xsize = (BX2 - BX1 + 1);
   int ysize = (BY2 - BY1 + 1);
@@ -12857,7 +13649,7 @@ boolean MovePlayer(struct PlayerInfo *player, int dx, int dy)
     else if (old_jx == jx && old_jy != jy)
       player->MovDir = (old_jy < jy ? MV_DOWN : MV_UP);
 
-    DrawLevelField(jx, jy);    /* for "crumbled sand" */
+    TEST_DrawLevelField(jx, jy);       /* for "crumbled sand" */
 
     player->last_move_dir = player->MovDir;
     player->is_moving = TRUE;
@@ -13002,8 +13794,14 @@ void ScrollPlayer(struct PlayerInfo *player, int mode)
 
     if (Feld[jx][jy] == EL_EXIT_OPEN ||
        Feld[jx][jy] == EL_EM_EXIT_OPEN ||
+#if 1
+       Feld[jx][jy] == EL_EM_EXIT_OPENING ||
+#endif
        Feld[jx][jy] == EL_STEEL_EXIT_OPEN ||
        Feld[jx][jy] == EL_EM_STEEL_EXIT_OPEN ||
+#if 1
+       Feld[jx][jy] == EL_EM_STEEL_EXIT_OPENING ||
+#endif
        Feld[jx][jy] == EL_SP_EXIT_OPEN ||
        Feld[jx][jy] == EL_SP_EXIT_OPENING)     /* <-- special case */
     {
@@ -13042,8 +13840,13 @@ void ScrollPlayer(struct PlayerInfo *player, int mode)
                                          CE_PLAYER_ENTERS_X,
                                          player->index_bit, enter_side);
 
+#if USE_FIX_CE_ACTION_WITH_PLAYER
+      CheckTriggeredElementChangeBySide(jx, jy, player->initial_element,
+                                       CE_MOVE_OF_X, move_direction);
+#else
       CheckTriggeredElementChangeBySide(jx, jy, player->element_nr,
                                        CE_MOVE_OF_X, move_direction);
+#endif
     }
 
     if (game.engine_version >= VERSION_IDENT(3,0,7,0))
@@ -13170,7 +13973,7 @@ void TestIfPlayerTouchesCustomElement(int x, int y)
     if (!IN_LEV_FIELD(xx, yy))
       continue;
 
-    if (IS_PLAYER(x, y))
+    if (IS_PLAYER(x, y))               /* player found at center element */
     {
       struct PlayerInfo *player = PLAYERINFO(x, y);
 
@@ -13188,8 +13991,21 @@ void TestIfPlayerTouchesCustomElement(int x, int y)
       CheckTriggeredElementChangeByPlayer(xx, yy, border_element,
                                          CE_PLAYER_TOUCHES_X,
                                          player->index_bit, border_side);
+
+#if USE_FIX_CE_ACTION_WITH_PLAYER
+      {
+       /* use player element that is initially defined in the level playfield,
+          not the player element that corresponds to the runtime player number
+          (example: a level that contains EL_PLAYER_3 as the only player would
+          incorrectly give EL_PLAYER_1 for "player->element_nr") */
+       int player_element = PLAYERINFO(x, y)->initial_element;
+
+       CheckElementChangeBySide(xx, yy, border_element, player_element,
+                                CE_TOUCHING_X, border_side);
+      }
+#endif
     }
-    else if (IS_PLAYER(xx, yy))
+    else if (IS_PLAYER(xx, yy))                /* player found at border element */
     {
       struct PlayerInfo *player = PLAYERINFO(xx, yy);
 
@@ -13204,6 +14020,20 @@ void TestIfPlayerTouchesCustomElement(int x, int y)
       CheckTriggeredElementChangeByPlayer(x, y, center_element,
                                          CE_PLAYER_TOUCHES_X,
                                          player->index_bit, center_side);
+
+#if USE_FIX_CE_ACTION_WITH_PLAYER
+      {
+       /* use player element that is initially defined in the level playfield,
+          not the player element that corresponds to the runtime player number
+          (example: a level that contains EL_PLAYER_3 as the only player would
+          incorrectly give EL_PLAYER_1 for "player->element_nr") */
+       int player_element = PLAYERINFO(xx, yy)->initial_element;
+
+       CheckElementChangeBySide(x, y, center_element, player_element,
+                                CE_TOUCHING_X, center_side);
+      }
+#endif
+
       break;
     }
   }
@@ -13276,10 +14106,14 @@ void TestIfElementTouchesCustomElement(int x, int y)
     /* check for change of border element */
     CheckElementChangeBySide(xx, yy, border_element, center_element,
                             CE_TOUCHING_X, center_side);
+
+    /* (center element cannot be player, so we dont have to check this here) */
   }
 
   for (i = 0; i < NUM_DIRECTIONS; i++)
   {
+    int xx = x + xy[i][0];
+    int yy = y + xy[i][1];
     int border_side = trigger_sides[i][1];
     int border_element = border_element_old[i];
 
@@ -13291,6 +14125,20 @@ void TestIfElementTouchesCustomElement(int x, int y)
       change_center_element =
        CheckElementChangeBySide(x, y, center_element, border_element,
                                 CE_TOUCHING_X, border_side);
+
+#if USE_FIX_CE_ACTION_WITH_PLAYER
+    if (IS_PLAYER(xx, yy))
+    {
+      /* use player element that is initially defined in the level playfield,
+        not the player element that corresponds to the runtime player number
+        (example: a level that contains EL_PLAYER_3 as the only player would
+        incorrectly give EL_PLAYER_1 for "player->element_nr") */
+      int player_element = PLAYERINFO(xx, yy)->initial_element;
+
+      CheckElementChangeBySide(x, y, center_element, player_element,
+                              CE_TOUCHING_X, border_side);
+    }
+#endif
   }
 }
 
@@ -13388,11 +14236,25 @@ void TestIfElementHitsCustomElement(int x, int y, int direction)
       CheckElementChangeBySide(x, y, hitting_element, touched_element,
                               CE_HITTING_X, touched_side);
 
-      CheckElementChangeBySide(hitx, hity, touched_element,
-                              hitting_element, CE_HIT_BY_X, hitting_side);
+      CheckElementChangeBySide(hitx, hity, touched_element, hitting_element,
+                              CE_HIT_BY_X, hitting_side);
 
       CheckElementChangeBySide(hitx, hity, touched_element, hitting_element,
                               CE_HIT_BY_SOMETHING, opposite_direction);
+
+#if USE_FIX_CE_ACTION_WITH_PLAYER
+      if (IS_PLAYER(hitx, hity))
+      {
+       /* use player element that is initially defined in the level playfield,
+          not the player element that corresponds to the runtime player number
+          (example: a level that contains EL_PLAYER_3 as the only player would
+          incorrectly give EL_PLAYER_1 for "player->element_nr") */
+       int player_element = PLAYERINFO(hitx, hity)->initial_element;
+
+       CheckElementChangeBySide(x, y, hitting_element, player_element,
+                                CE_HITTING_X, touched_side);
+      }
+#endif
     }
   }
 
@@ -13565,6 +14427,7 @@ void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
 
     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;
 
@@ -13595,12 +14458,14 @@ void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
 
        kill_x = test_x;
        kill_y = test_y;
+
        break;
       }
       else if (test_element == EL_PENGUIN)
       {
        kill_x = test_x;
        kill_y = test_y;
+
        break;
       }
     }
@@ -13623,6 +14488,63 @@ void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
   }
 }
 
+void TestIfGoodThingGetsHitByBadThing(int bad_x, int bad_y, int bad_move_dir)
+{
+  int bad_element = Feld[bad_x][bad_y];
+  int dx = (bad_move_dir == MV_LEFT ? -1 : bad_move_dir == MV_RIGHT ? +1 : 0);
+  int dy = (bad_move_dir == MV_UP   ? -1 : bad_move_dir == MV_DOWN  ? +1 : 0);
+  int test_x = bad_x + dx, test_y = bad_y + dy;
+  int test_move_dir, test_element;
+  int kill_x = -1, kill_y = -1;
+
+  if (!IN_LEV_FIELD(test_x, test_y))
+    return;
+
+  test_move_dir =
+    (IS_MOVING(test_x, test_y) ? MovDir[test_x][test_y] : MV_NONE);
+
+  test_element = Feld[test_x][test_y];
+
+  if (test_move_dir != bad_move_dir)
+  {
+    /* good thing can be player or penguin that does not move away */
+    if (IS_PLAYER(test_x, test_y))
+    {
+      struct PlayerInfo *player = PLAYERINFO(test_x, test_y);
+
+      /* (note: in comparison to DONT_RUN_TO and DONT_TOUCH, also handle the
+        player as being hit when he is moving towards the bad thing, because
+        the "get hit by" condition would be lost after the player stops) */
+      if (player->MovPos != 0 && player->MovDir == bad_move_dir)
+       return;         /* player moves away from bad thing */
+
+      kill_x = test_x;
+      kill_y = test_y;
+    }
+    else if (test_element == EL_PENGUIN)
+    {
+      kill_x = test_x;
+      kill_y = test_y;
+    }
+  }
+
+  if (kill_x != -1 || kill_y != -1)
+  {
+    if (IS_PLAYER(kill_x, kill_y))
+    {
+      struct PlayerInfo *player = PLAYERINFO(kill_x, kill_y);
+
+      if (player->shield_deadly_time_left > 0 &&
+         !IS_INDESTRUCTIBLE(bad_element))
+       Bang(bad_x, bad_y);
+      else if (!PLAYER_ENEMY_PROTECTED(kill_x, kill_y))
+       KillPlayer(player);
+    }
+    else
+      Bang(kill_x, kill_y);
+  }
+}
+
 void TestIfPlayerTouchesBadThing(int x, int y)
 {
   TestIfGoodThingHitsBadThing(x, y, MV_NONE);
@@ -13694,6 +14616,11 @@ void KillPlayer(struct PlayerInfo *player)
   if (!player->active)
     return;
 
+#if 0
+  printf("::: 0: killed == %d, active == %d, reanimated == %d\n",
+        player->killed, player->active, player->reanimated);
+#endif
+
   /* the following code was introduced to prevent an infinite loop when calling
      -> Bang()
      -> CheckTriggeredElementChangeExt()
@@ -13718,8 +14645,31 @@ void KillPlayer(struct PlayerInfo *player)
   player->shield_normal_time_left = 0;
   player->shield_deadly_time_left = 0;
 
+#if 0
+  printf("::: 1: killed == %d, active == %d, reanimated == %d\n",
+        player->killed, player->active, player->reanimated);
+#endif
+
   Bang(jx, jy);
+
+#if 0
+  printf("::: 2: killed == %d, active == %d, reanimated == %d\n",
+        player->killed, player->active, player->reanimated);
+#endif
+
+#if USE_PLAYER_REANIMATION
+#if 1
+  if (player->reanimated)      /* killed player may have been reanimated */
+    player->killed = player->reanimated = FALSE;
+  else
+    BuryPlayer(player);
+#else
+  if (player->killed)          /* player may have been reanimated */
+    BuryPlayer(player);
+#endif
+#else
   BuryPlayer(player);
+#endif
 }
 
 static void KillPlayerUnlessEnemyProtected(int x, int y)
@@ -13760,7 +14710,7 @@ void RemovePlayer(struct PlayerInfo *player)
     StorePlayer[jx][jy] = 0;
 
   if (player->is_moving)
-    DrawLevelField(player->last_jx, player->last_jy);
+    TEST_DrawLevelField(player->last_jx, player->last_jy);
 
   for (i = 0; i < MAX_PLAYERS; i++)
     if (stored_player[i].active)
@@ -13831,9 +14781,9 @@ static boolean checkDiagonalPushing(struct PlayerInfo *player,
   =============================================================================
 */
 
-int DigField(struct PlayerInfo *player,
-            int oldx, int oldy, int x, int y,
-            int real_dx, int real_dy, int mode)
+static int DigField(struct PlayerInfo *player,
+                   int oldx, int oldy, int x, int y,
+                   int real_dx, int real_dy, int mode)
 {
   boolean is_player = (IS_PLAYER(oldx, oldy) || mode != DF_DIG);
   boolean player_was_pushing = player->is_pushing;
@@ -13988,8 +14938,14 @@ int DigField(struct PlayerInfo *player,
     }
     else if (element == EL_EXIT_OPEN ||
             element == EL_EM_EXIT_OPEN ||
+#if 1
+            element == EL_EM_EXIT_OPENING ||
+#endif
             element == EL_STEEL_EXIT_OPEN ||
             element == EL_EM_STEEL_EXIT_OPEN ||
+#if 1
+            element == EL_EM_STEEL_EXIT_OPENING ||
+#endif
             element == EL_SP_EXIT_OPEN ||
             element == EL_SP_EXIT_OPENING)
     {
@@ -14312,8 +15268,10 @@ int DigField(struct PlayerInfo *player,
 
     if (!(IN_LEV_FIELD(nextx, nexty) &&
          (IS_FREE(nextx, nexty) ||
-          (Feld[nextx][nexty] == EL_SOKOBAN_FIELD_EMPTY &&
-           IS_SB_ELEMENT(element)))))
+          (IS_SB_ELEMENT(element) &&
+           Feld[nextx][nexty] == EL_SOKOBAN_FIELD_EMPTY) ||
+          (IS_CUSTOM_ELEMENT(element) &&
+           CUSTOM_ELEMENT_CAN_ENTER_FIELD(element, nextx, nexty)))))
       return MP_NO_ACTION;
 
     if (!checkDiagonalPushing(player, x, y, real_dx, real_dy))
@@ -14333,6 +15291,13 @@ int DigField(struct PlayerInfo *player,
       return MP_NO_ACTION;
     }
 
+    if (IS_CUSTOM_ELEMENT(element) &&
+       CUSTOM_ELEMENT_CAN_ENTER_FIELD(element, nextx, nexty))
+    {
+      if (!DigFieldByCE(nextx, nexty, element))
+       return MP_NO_ACTION;
+    }
+
     if (IS_SB_ELEMENT(element))
     {
       if (element == EL_SOKOBAN_FIELD_FULL)
@@ -14418,7 +15383,7 @@ int DigField(struct PlayerInfo *player,
 
       game.robot_wheel_active = TRUE;
 
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_SP_TERMINAL)
     {
@@ -14473,7 +15438,7 @@ int DigField(struct PlayerInfo *player,
       local_player->lights_still_needed--;
 
       ResetGfxAnimation(x, y);
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_TIME_ORB_FULL)
     {
@@ -14493,7 +15458,7 @@ int DigField(struct PlayerInfo *player,
       }
 
       ResetGfxAnimation(x, y);
-      DrawLevelField(x, y);
+      TEST_DrawLevelField(x, y);
     }
     else if (element == EL_EMC_MAGIC_BALL_SWITCH ||
             element == EL_EMC_MAGIC_BALL_SWITCH_ACTIVE)
@@ -14575,7 +15540,66 @@ int DigField(struct PlayerInfo *player,
   return MP_MOVING;
 }
 
-boolean SnapField(struct PlayerInfo *player, int dx, int dy)
+static boolean DigFieldByCE(int x, int y, int digging_element)
+{
+  int element = Feld[x][y];
+
+  if (!IS_FREE(x, y))
+  {
+    int action = (IS_DIGGABLE(element) ? ACTION_DIGGING :
+                 IS_COLLECTIBLE(element) ? ACTION_COLLECTING :
+                 ACTION_BREAKING);
+
+    /* no element can dig solid indestructible elements */
+    if (IS_INDESTRUCTIBLE(element) &&
+       !IS_DIGGABLE(element) &&
+       !IS_COLLECTIBLE(element))
+      return FALSE;
+
+    if (AmoebaNr[x][y] &&
+       (element == EL_AMOEBA_FULL ||
+        element == EL_BD_AMOEBA ||
+        element == EL_AMOEBA_GROWING))
+    {
+      AmoebaCnt[AmoebaNr[x][y]]--;
+      AmoebaCnt2[AmoebaNr[x][y]]--;
+    }
+
+    if (IS_MOVING(x, y))
+      RemoveMovingField(x, y);
+    else
+    {
+      RemoveField(x, y);
+      TEST_DrawLevelField(x, y);
+    }
+
+    /* if digged element was about to explode, prevent the explosion */
+    ExplodeField[x][y] = EX_TYPE_NONE;
+
+    PlayLevelSoundAction(x, y, action);
+  }
+
+  Store[x][y] = EL_EMPTY;
+
+#if 1
+  /* this makes it possible to leave the removed element again */
+  if (IS_EQUAL_OR_IN_GROUP(element, MOVE_ENTER_EL(digging_element)))
+    Store[x][y] = element;
+#else
+  if (IS_EQUAL_OR_IN_GROUP(element, MOVE_ENTER_EL(digging_element)))
+  {
+    int move_leave_element = element_info[digging_element].move_leave_element;
+
+    /* this makes it possible to leave the removed element again */
+    Store[x][y] = (move_leave_element == EL_TRIGGER_ELEMENT ?
+                  element : move_leave_element);
+  }
+#endif
+
+  return TRUE;
+}
+
+static boolean SnapField(struct PlayerInfo *player, int dx, int dy)
 {
   int jx = player->jx, jy = player->jy;
   int x = jx + dx, y = jy + dy;
@@ -14648,14 +15672,14 @@ boolean SnapField(struct PlayerInfo *player, int dx, int dy)
   }
 
   if (player->MovPos != 0)     /* prevent graphic bugs in versions < 2.2.0 */
-    DrawLevelField(player->last_jx, player->last_jy);
+    TEST_DrawLevelField(player->last_jx, player->last_jy);
 
-  DrawLevelField(x, y);
+  TEST_DrawLevelField(x, y);
 
   return TRUE;
 }
 
-boolean DropElement(struct PlayerInfo *player)
+static boolean DropElement(struct PlayerInfo *player)
 {
   int old_element, new_element;
   int dropx = player->jx, dropy = player->jy;