fixed fading complete screen if playfield viewport has changed
[rocksndiamonds.git] / src / game.c
index ae9346768b163531732e0fe2b5feca802ba7d630..1de51be5b909b1e0cc2b0f735fa0e7f989fc7771 100644 (file)
@@ -19,6 +19,7 @@
 #include "files.h"
 #include "tape.h"
 #include "network.h"
+#include "anim.h"
 
 
 /* DEBUG SETTINGS */
 #define GAME_PANEL_TIME_HH                     32
 #define GAME_PANEL_TIME_MM                     33
 #define GAME_PANEL_TIME_SS                     34
-#define GAME_PANEL_FRAME                       35
-#define GAME_PANEL_SHIELD_NORMAL               36
-#define GAME_PANEL_SHIELD_NORMAL_TIME          37
-#define GAME_PANEL_SHIELD_DEADLY               38
-#define GAME_PANEL_SHIELD_DEADLY_TIME          39
-#define GAME_PANEL_EXIT                                40
-#define GAME_PANEL_EMC_MAGIC_BALL              41
-#define GAME_PANEL_EMC_MAGIC_BALL_SWITCH       42
-#define GAME_PANEL_LIGHT_SWITCH                        43
-#define GAME_PANEL_LIGHT_SWITCH_TIME           44
-#define GAME_PANEL_TIMEGATE_SWITCH             45
-#define GAME_PANEL_TIMEGATE_SWITCH_TIME                46
-#define GAME_PANEL_SWITCHGATE_SWITCH           47
-#define GAME_PANEL_EMC_LENSES                  48
-#define GAME_PANEL_EMC_LENSES_TIME             49
-#define GAME_PANEL_EMC_MAGNIFIER               50
-#define GAME_PANEL_EMC_MAGNIFIER_TIME          51
-#define GAME_PANEL_BALLOON_SWITCH              52
-#define GAME_PANEL_DYNABOMB_NUMBER             53
-#define GAME_PANEL_DYNABOMB_SIZE               54
-#define GAME_PANEL_DYNABOMB_POWER              55
-#define GAME_PANEL_PENGUINS                    56
-#define GAME_PANEL_SOKOBAN_OBJECTS             57
-#define GAME_PANEL_SOKOBAN_FIELDS              58
-#define GAME_PANEL_ROBOT_WHEEL                 59
-#define GAME_PANEL_CONVEYOR_BELT_1             60
-#define GAME_PANEL_CONVEYOR_BELT_2             61
-#define GAME_PANEL_CONVEYOR_BELT_3             62
-#define GAME_PANEL_CONVEYOR_BELT_4             63
-#define GAME_PANEL_CONVEYOR_BELT_1_SWITCH      64
-#define GAME_PANEL_CONVEYOR_BELT_2_SWITCH      65
-#define GAME_PANEL_CONVEYOR_BELT_3_SWITCH      66
-#define GAME_PANEL_CONVEYOR_BELT_4_SWITCH      67
-#define GAME_PANEL_MAGIC_WALL                  68
-#define GAME_PANEL_MAGIC_WALL_TIME             69
-#define GAME_PANEL_GRAVITY_STATE               70
-#define GAME_PANEL_GRAPHIC_1                   71
-#define GAME_PANEL_GRAPHIC_2                   72
-#define GAME_PANEL_GRAPHIC_3                   73
-#define GAME_PANEL_GRAPHIC_4                   74
-#define GAME_PANEL_GRAPHIC_5                   75
-#define GAME_PANEL_GRAPHIC_6                   76
-#define GAME_PANEL_GRAPHIC_7                   77
-#define GAME_PANEL_GRAPHIC_8                   78
-#define GAME_PANEL_ELEMENT_1                   79
-#define GAME_PANEL_ELEMENT_2                   80
-#define GAME_PANEL_ELEMENT_3                   81
-#define GAME_PANEL_ELEMENT_4                   82
-#define GAME_PANEL_ELEMENT_5                   83
-#define GAME_PANEL_ELEMENT_6                   84
-#define GAME_PANEL_ELEMENT_7                   85
-#define GAME_PANEL_ELEMENT_8                   86
-#define GAME_PANEL_ELEMENT_COUNT_1             87
-#define GAME_PANEL_ELEMENT_COUNT_2             88
-#define GAME_PANEL_ELEMENT_COUNT_3             89
-#define GAME_PANEL_ELEMENT_COUNT_4             90
-#define GAME_PANEL_ELEMENT_COUNT_5             91
-#define GAME_PANEL_ELEMENT_COUNT_6             92
-#define GAME_PANEL_ELEMENT_COUNT_7             93
-#define GAME_PANEL_ELEMENT_COUNT_8             94
-#define GAME_PANEL_CE_SCORE_1                  95
-#define GAME_PANEL_CE_SCORE_2                  96
-#define GAME_PANEL_CE_SCORE_3                  97
-#define GAME_PANEL_CE_SCORE_4                  98
-#define GAME_PANEL_CE_SCORE_5                  99
-#define GAME_PANEL_CE_SCORE_6                  100
-#define GAME_PANEL_CE_SCORE_7                  101
-#define GAME_PANEL_CE_SCORE_8                  102
-#define GAME_PANEL_CE_SCORE_1_ELEMENT          103
-#define GAME_PANEL_CE_SCORE_2_ELEMENT          104
-#define GAME_PANEL_CE_SCORE_3_ELEMENT          105
-#define GAME_PANEL_CE_SCORE_4_ELEMENT          106
-#define GAME_PANEL_CE_SCORE_5_ELEMENT          107
-#define GAME_PANEL_CE_SCORE_6_ELEMENT          108
-#define GAME_PANEL_CE_SCORE_7_ELEMENT          109
-#define GAME_PANEL_CE_SCORE_8_ELEMENT          110
-#define GAME_PANEL_PLAYER_NAME                 111
-#define GAME_PANEL_LEVEL_NAME                  112
-#define GAME_PANEL_LEVEL_AUTHOR                        113
-
-#define NUM_GAME_PANEL_CONTROLS                        114
+#define GAME_PANEL_TIME_ANIM                   35
+#define GAME_PANEL_HEALTH                      36
+#define GAME_PANEL_HEALTH_ANIM                 37
+#define GAME_PANEL_FRAME                       38
+#define GAME_PANEL_SHIELD_NORMAL               39
+#define GAME_PANEL_SHIELD_NORMAL_TIME          40
+#define GAME_PANEL_SHIELD_DEADLY               41
+#define GAME_PANEL_SHIELD_DEADLY_TIME          42
+#define GAME_PANEL_EXIT                                43
+#define GAME_PANEL_EMC_MAGIC_BALL              44
+#define GAME_PANEL_EMC_MAGIC_BALL_SWITCH       45
+#define GAME_PANEL_LIGHT_SWITCH                        46
+#define GAME_PANEL_LIGHT_SWITCH_TIME           47
+#define GAME_PANEL_TIMEGATE_SWITCH             48
+#define GAME_PANEL_TIMEGATE_SWITCH_TIME                49
+#define GAME_PANEL_SWITCHGATE_SWITCH           50
+#define GAME_PANEL_EMC_LENSES                  51
+#define GAME_PANEL_EMC_LENSES_TIME             52
+#define GAME_PANEL_EMC_MAGNIFIER               53
+#define GAME_PANEL_EMC_MAGNIFIER_TIME          54
+#define GAME_PANEL_BALLOON_SWITCH              55
+#define GAME_PANEL_DYNABOMB_NUMBER             56
+#define GAME_PANEL_DYNABOMB_SIZE               57
+#define GAME_PANEL_DYNABOMB_POWER              58
+#define GAME_PANEL_PENGUINS                    59
+#define GAME_PANEL_SOKOBAN_OBJECTS             60
+#define GAME_PANEL_SOKOBAN_FIELDS              61
+#define GAME_PANEL_ROBOT_WHEEL                 62
+#define GAME_PANEL_CONVEYOR_BELT_1             63
+#define GAME_PANEL_CONVEYOR_BELT_2             64
+#define GAME_PANEL_CONVEYOR_BELT_3             65
+#define GAME_PANEL_CONVEYOR_BELT_4             66
+#define GAME_PANEL_CONVEYOR_BELT_1_SWITCH      67
+#define GAME_PANEL_CONVEYOR_BELT_2_SWITCH      68
+#define GAME_PANEL_CONVEYOR_BELT_3_SWITCH      69
+#define GAME_PANEL_CONVEYOR_BELT_4_SWITCH      70
+#define GAME_PANEL_MAGIC_WALL                  71
+#define GAME_PANEL_MAGIC_WALL_TIME             72
+#define GAME_PANEL_GRAVITY_STATE               73
+#define GAME_PANEL_GRAPHIC_1                   74
+#define GAME_PANEL_GRAPHIC_2                   75
+#define GAME_PANEL_GRAPHIC_3                   76
+#define GAME_PANEL_GRAPHIC_4                   77
+#define GAME_PANEL_GRAPHIC_5                   78
+#define GAME_PANEL_GRAPHIC_6                   79
+#define GAME_PANEL_GRAPHIC_7                   80
+#define GAME_PANEL_GRAPHIC_8                   81
+#define GAME_PANEL_ELEMENT_1                   82
+#define GAME_PANEL_ELEMENT_2                   83
+#define GAME_PANEL_ELEMENT_3                   84
+#define GAME_PANEL_ELEMENT_4                   85
+#define GAME_PANEL_ELEMENT_5                   86
+#define GAME_PANEL_ELEMENT_6                   87
+#define GAME_PANEL_ELEMENT_7                   88
+#define GAME_PANEL_ELEMENT_8                   89
+#define GAME_PANEL_ELEMENT_COUNT_1             90
+#define GAME_PANEL_ELEMENT_COUNT_2             91
+#define GAME_PANEL_ELEMENT_COUNT_3             92
+#define GAME_PANEL_ELEMENT_COUNT_4             93
+#define GAME_PANEL_ELEMENT_COUNT_5             94
+#define GAME_PANEL_ELEMENT_COUNT_6             95
+#define GAME_PANEL_ELEMENT_COUNT_7             96
+#define GAME_PANEL_ELEMENT_COUNT_8             97
+#define GAME_PANEL_CE_SCORE_1                  98
+#define GAME_PANEL_CE_SCORE_2                  99
+#define GAME_PANEL_CE_SCORE_3                  100
+#define GAME_PANEL_CE_SCORE_4                  101
+#define GAME_PANEL_CE_SCORE_5                  102
+#define GAME_PANEL_CE_SCORE_6                  103
+#define GAME_PANEL_CE_SCORE_7                  104
+#define GAME_PANEL_CE_SCORE_8                  105
+#define GAME_PANEL_CE_SCORE_1_ELEMENT          106
+#define GAME_PANEL_CE_SCORE_2_ELEMENT          107
+#define GAME_PANEL_CE_SCORE_3_ELEMENT          108
+#define GAME_PANEL_CE_SCORE_4_ELEMENT          109
+#define GAME_PANEL_CE_SCORE_5_ELEMENT          110
+#define GAME_PANEL_CE_SCORE_6_ELEMENT          111
+#define GAME_PANEL_CE_SCORE_7_ELEMENT          112
+#define GAME_PANEL_CE_SCORE_8_ELEMENT          113
+#define GAME_PANEL_PLAYER_NAME                 114
+#define GAME_PANEL_LEVEL_NAME                  115
+#define GAME_PANEL_LEVEL_AUTHOR                        116
+
+#define NUM_GAME_PANEL_CONTROLS                        117
 
 struct GamePanelOrderInfo
 {
@@ -218,6 +222,8 @@ struct GamePanelControlInfo
   struct TextPosInfo *pos;
   int type;
 
+  int graphic, graphic_active;
+
   int value, last_value;
   int frame, last_frame;
   int gfx_frame;
@@ -401,6 +407,27 @@ static struct GamePanelControlInfo game_panel_controls[] =
     &game.panel.time_ss,
     TYPE_INTEGER,
   },
+  {
+    GAME_PANEL_TIME_ANIM,
+    &game.panel.time_anim,
+    TYPE_GRAPHIC,
+
+    IMG_GFX_GAME_PANEL_TIME_ANIM,
+    IMG_GFX_GAME_PANEL_TIME_ANIM_ACTIVE
+  },
+  {
+    GAME_PANEL_HEALTH,
+    &game.panel.health,
+    TYPE_INTEGER,
+  },
+  {
+    GAME_PANEL_HEALTH_ANIM,
+    &game.panel.health_anim,
+    TYPE_GRAPHIC,
+
+    IMG_GFX_GAME_PANEL_HEALTH_ANIM,
+    IMG_GFX_GAME_PANEL_HEALTH_ANIM_ACTIVE
+  },
   {
     GAME_PANEL_FRAME,
     &game.panel.frame,
@@ -826,6 +853,14 @@ static struct GamePanelControlInfo game_panel_controls[] =
 #define DOUBLE_PLAYER_SPEED(p) (HALVE_MOVE_DELAY( (p)->move_delay_value))
 #define HALVE_PLAYER_SPEED(p)  (DOUBLE_MOVE_DELAY((p)->move_delay_value))
 
+/* values for scroll positions */
+#define SCROLL_POSITION_X(x)   ((x) < SBX_Left  + MIDPOSX ? SBX_Left : \
+                                (x) > SBX_Right + MIDPOSX ? SBX_Right :\
+                                (x) - MIDPOSX)
+#define SCROLL_POSITION_Y(y)   ((y) < SBY_Upper + MIDPOSY ? SBY_Upper :\
+                                (y) > SBY_Lower + MIDPOSY ? SBY_Lower :\
+                                (y) - MIDPOSY)
+
 /* values for other actions */
 #define MOVE_STEPSIZE_NORMAL   (TILEX / MOVE_DELAY_NORMAL_SPEED)
 #define MOVE_STEPSIZE_MIN      (1)
@@ -967,6 +1002,8 @@ static struct GamePanelControlInfo game_panel_controls[] =
 #define IS_PASSABLE_FROM(e, d)         (IS_PASSABLE(e)   && ACCESS_FROM(e, d))
 #define IS_ACCESSIBLE_FROM(e, d)       (IS_ACCESSIBLE(e) && ACCESS_FROM(e, d))
 
+#define MM_HEALTH(x)           (MIN(MAX(0, MAX_HEALTH - (x)), MAX_HEALTH))
+
 /* game button identifiers */
 #define GAME_CTRL_ID_STOP              0
 #define GAME_CTRL_ID_PAUSE             1
@@ -976,11 +1013,17 @@ static struct GamePanelControlInfo game_panel_controls[] =
 #define GAME_CTRL_ID_SAVE              5
 #define GAME_CTRL_ID_PAUSE2            6
 #define GAME_CTRL_ID_LOAD              7
-#define SOUND_CTRL_ID_MUSIC            8
-#define SOUND_CTRL_ID_LOOPS            9
-#define SOUND_CTRL_ID_SIMPLE           10
+#define GAME_CTRL_ID_PANEL_STOP                8
+#define GAME_CTRL_ID_PANEL_PAUSE       9
+#define GAME_CTRL_ID_PANEL_PLAY                10
+#define SOUND_CTRL_ID_MUSIC            11
+#define SOUND_CTRL_ID_LOOPS            12
+#define SOUND_CTRL_ID_SIMPLE           13
+#define SOUND_CTRL_ID_PANEL_MUSIC      14
+#define SOUND_CTRL_ID_PANEL_LOOPS      15
+#define SOUND_CTRL_ID_PANEL_SIMPLE     16
 
-#define NUM_GAME_BUTTONS               11
+#define NUM_GAME_BUTTONS               17
 
 
 /* forward declaration for internal use */
@@ -1043,6 +1086,7 @@ static void PlayLevelSoundElementActionIfLoop(int, int, int, int);
 static void PlayLevelSoundActionIfLoop(int, int, int);
 static void StopLevelSoundActionIfLoop(int, int, int);
 static void PlayLevelMusic();
+static void FadeLevelSoundsAndMusic();
 
 static void HandleGameButtons(struct GadgetInfo *);
 
@@ -1610,7 +1654,6 @@ void GetPlayerConfig()
   setup.sound = (setup.sound_simple || setup.sound_loops || setup.sound_music);
 
   SetAudioMode(setup.sound);
-  InitJoysticks();
 }
 
 int GetElementFromGroupElement(int element)
@@ -1949,7 +1992,7 @@ static void InitField(int x, int y, boolean init_game)
     CheckTriggeredElementChange(x, y, element, CE_CREATION_OF_X);
 }
 
-static inline void InitField_WithBug1(int x, int y, boolean init_game)
+inline static void InitField_WithBug1(int x, int y, boolean init_game)
 {
   InitField(x, y, init_game);
 
@@ -1959,7 +2002,7 @@ static inline void InitField_WithBug1(int x, int y, boolean init_game)
     InitMovDir(x, y);
 }
 
-static inline void InitField_WithBug2(int x, int y, boolean init_game)
+inline static void InitField_WithBug2(int x, int y, boolean init_game)
 {
   int old_element = Feld[x][y];
 
@@ -2049,6 +2092,16 @@ static int compareGamePanelOrderInfo(const void *object1, const void *object2)
   return compare_result;
 }
 
+int getPlayerInventorySize(int player_nr)
+{
+  if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
+    return level.native_em_level->ply[player_nr]->dynamite;
+  else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
+    return level.native_sp_level->game_sp->red_disk_count;
+  else
+    return stored_player[player_nr].inventory_size;
+}
+
 void InitGameControlValues()
 {
   int i;
@@ -2131,6 +2184,8 @@ void UpdateGameControlValues()
              level.native_em_level->lev->time :
              level.game_engine_type == GAME_ENGINE_TYPE_SP ?
              level.native_sp_level->game_sp->time_played :
+             level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+             game_mm.energy_left :
              game.no_time_limit ? TimePlayed : TimeLeft);
   int score = (local_player->LevelSolved ?
               local_player->LevelSolved_CountingScore :
@@ -2138,19 +2193,31 @@ void UpdateGameControlValues()
               level.native_em_level->lev->score :
               level.game_engine_type == GAME_ENGINE_TYPE_SP ?
               level.native_sp_level->game_sp->score :
+              level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+              game_mm.score :
               local_player->score);
   int gems = (level.game_engine_type == GAME_ENGINE_TYPE_EM ?
              level.native_em_level->lev->required :
              level.game_engine_type == GAME_ENGINE_TYPE_SP ?
              level.native_sp_level->game_sp->infotrons_still_needed :
+             level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+             game_mm.kettles_still_needed :
              local_player->gems_still_needed);
   int exit_closed = (level.game_engine_type == GAME_ENGINE_TYPE_EM ?
                     level.native_em_level->lev->required > 0 :
                     level.game_engine_type == GAME_ENGINE_TYPE_SP ?
                     level.native_sp_level->game_sp->infotrons_still_needed > 0 :
+                    level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+                    game_mm.kettles_still_needed > 0 ||
+                    game_mm.lights_still_needed > 0 :
                     local_player->gems_still_needed > 0 ||
                     local_player->sokobanfields_still_needed > 0 ||
                     local_player->lights_still_needed > 0);
+  int health = (local_player->LevelSolved ?
+               local_player->LevelSolved_CountingHealth :
+               level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+               MM_HEALTH(game_mm.laser_overload_value) :
+               local_player->health);
 
   UpdatePlayfieldElementCount();
 
@@ -2186,15 +2253,8 @@ void UpdateGameControlValues()
            get_key_element_from_nr(k);
       }
 
-      if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
-       game_panel_controls[GAME_PANEL_INVENTORY_COUNT].value +=
-         level.native_em_level->ply[i]->dynamite;
-      else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
-       game_panel_controls[GAME_PANEL_INVENTORY_COUNT].value +=
-         level.native_sp_level->game_sp->red_disk_count;
-      else
-       game_panel_controls[GAME_PANEL_INVENTORY_COUNT].value +=
-         stored_player[i].inventory_size;
+      game_panel_controls[GAME_PANEL_INVENTORY_COUNT].value +=
+       getPlayerInventorySize(i);
 
       if (stored_player[i].num_white_keys > 0)
        game_panel_controls[GAME_PANEL_KEY_WHITE].value =
@@ -2221,15 +2281,8 @@ void UpdateGameControlValues()
          get_key_element_from_nr(k);
     }
 
-    if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
-      game_panel_controls[GAME_PANEL_INVENTORY_COUNT].value +=
-       level.native_em_level->ply[player_nr]->dynamite;
-    else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
-      game_panel_controls[GAME_PANEL_INVENTORY_COUNT].value +=
-       level.native_sp_level->game_sp->red_disk_count;
-    else
-      game_panel_controls[GAME_PANEL_INVENTORY_COUNT].value +=
-       stored_player[player_nr].inventory_size;
+    game_panel_controls[GAME_PANEL_INVENTORY_COUNT].value +=
+      getPlayerInventorySize(player_nr);
 
     if (stored_player[player_nr].num_white_keys > 0)
       game_panel_controls[GAME_PANEL_KEY_WHITE].value = EL_DC_KEY_WHITE;
@@ -2255,6 +2308,14 @@ void UpdateGameControlValues()
   game_panel_controls[GAME_PANEL_TIME_MM].value = (time / 60) % 60;
   game_panel_controls[GAME_PANEL_TIME_SS].value = time % 60;
 
+  if (game.no_time_limit)
+    game_panel_controls[GAME_PANEL_TIME_ANIM].value = 100;
+  else
+    game_panel_controls[GAME_PANEL_TIME_ANIM].value = time * 100 / level.time;
+
+  game_panel_controls[GAME_PANEL_HEALTH].value = health;
+  game_panel_controls[GAME_PANEL_HEALTH_ANIM].value = health;
+
   game_panel_controls[GAME_PANEL_FRAME].value = FrameCounter;
 
   game_panel_controls[GAME_PANEL_SHIELD_NORMAL].value =
@@ -2407,6 +2468,36 @@ void UpdateGameControlValues()
        gpc->frame = getGraphicAnimationFrame(el2panelimg(gpc->value),
                                              gpc->gfx_frame);
 
+       if (ANIM_MODE(graphic) == ANIM_RANDOM)
+         gfx.anim_random_frame = last_anim_random_frame;
+      }
+    }
+    else if (gpc->type == TYPE_GRAPHIC)
+    {
+      if (gpc->graphic != IMG_UNDEFINED)
+      {
+       int last_anim_random_frame = gfx.anim_random_frame;
+       int graphic = gpc->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;
+
+       gpc->frame = getGraphicAnimationFrame(graphic, gpc->gfx_frame);
+
        if (ANIM_MODE(graphic) == ANIM_RANDOM)
          gfx.anim_random_frame = last_anim_random_frame;
       }
@@ -2446,7 +2537,7 @@ void DisplayGameControlValues()
   /* redraw game control buttons */
   RedrawGameButtons();
 
-  game_status = GAME_MODE_PSEUDO_PANEL;
+  SetGameStatus(GAME_MODE_PSEUDO_PANEL);
 
   for (i = 0; i < NUM_GAME_PANEL_CONTROLS; i++)
   {
@@ -2530,6 +2621,94 @@ void DisplayGameControlValues()
                     dst_x, dst_y);
       }
     }
+    else if (type == TYPE_GRAPHIC)
+    {
+      int graphic        = gpc->graphic;
+      int graphic_active = gpc->graphic_active;
+      Bitmap *src_bitmap;
+      int src_x, src_y;
+      int width, height;
+      int dst_x = PANEL_XPOS(pos);
+      int dst_y = PANEL_YPOS(pos);
+      boolean skip = (pos->class == get_hash_from_key("mm_engine_only") &&
+                     level.game_engine_type != GAME_ENGINE_TYPE_MM);
+
+      if (graphic != IMG_UNDEFINED && !skip)
+      {
+       if (pos->style == STYLE_REVERSE)
+         value = 100 - value;
+
+       getGraphicSource(graphic_active, frame, &src_bitmap, &src_x, &src_y);
+
+       if (pos->direction & MV_HORIZONTAL)
+       {
+         width  = graphic_info[graphic_active].width * value / 100;
+         height = graphic_info[graphic_active].height;
+
+         if (pos->direction == MV_LEFT)
+         {
+           src_x += graphic_info[graphic_active].width - width;
+           dst_x += graphic_info[graphic_active].width - width;
+         }
+       }
+       else
+       {
+         width  = graphic_info[graphic_active].width;
+         height = graphic_info[graphic_active].height * value / 100;
+
+         if (pos->direction == MV_UP)
+         {
+           src_y += graphic_info[graphic_active].height - height;
+           dst_y += graphic_info[graphic_active].height - height;
+         }
+       }
+
+       if (draw_masked)
+         BlitBitmapMasked(src_bitmap, drawto, src_x, src_y, width, height,
+                          dst_x, dst_y);
+       else
+         BlitBitmap(src_bitmap, drawto, src_x, src_y, width, height,
+                    dst_x, dst_y);
+
+       getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
+
+       if (pos->direction & MV_HORIZONTAL)
+       {
+         if (pos->direction == MV_RIGHT)
+         {
+           src_x += width;
+           dst_x += width;
+         }
+         else
+         {
+           dst_x = PANEL_XPOS(pos);
+         }
+
+         width = graphic_info[graphic].width - width;
+       }
+       else
+       {
+         if (pos->direction == MV_DOWN)
+         {
+           src_y += height;
+           dst_y += height;
+         }
+         else
+         {
+           dst_y = PANEL_YPOS(pos);
+         }
+
+         height = graphic_info[graphic].height - height;
+       }
+
+       if (draw_masked)
+         BlitBitmapMasked(src_bitmap, drawto, src_x, src_y, width, height,
+                          dst_x, dst_y);
+       else
+         BlitBitmap(src_bitmap, drawto, src_x, src_y, width, height,
+                    dst_x, dst_y);
+      }
+    }
     else if (type == TYPE_STRING)
     {
       boolean active = (value != 0);
@@ -2574,7 +2753,7 @@ void DisplayGameControlValues()
     redraw_mask |= REDRAW_DOOR_1;
   }
 
-  game_status = GAME_MODE_PLAYING;
+  SetGameStatus(GAME_MODE_PLAYING);
 }
 
 void UpdateAndDisplayGameControlValues()
@@ -2694,6 +2873,12 @@ static void InitGameEngine()
   game.use_block_last_field_bug =
     (game.engine_version < VERSION_IDENT(3,1,1,0));
 
+  game_em.use_single_button =
+    (game.engine_version > VERSION_IDENT(4,0,0,2));
+
+  game_em.use_snap_key_bug =
+    (game.engine_version < VERSION_IDENT(4,0,1,0));
+
   /* ---------------------------------------------------------------------- */
 
   /* set maximal allowed number of custom element changes per game frame */
@@ -3040,11 +3225,20 @@ static void InitGameEngine()
   for (i = 0; i < MAX_PLAYERS; i++)
     game.snapshot.last_action[i] = 0;
   game.snapshot.changed_action = FALSE;
+  game.snapshot.collected_item = FALSE;
   game.snapshot.mode =
     (strEqual(setup.engine_snapshot_mode, STR_SNAPSHOT_MODE_EVERY_STEP) ?
      SNAPSHOT_MODE_EVERY_STEP :
      strEqual(setup.engine_snapshot_mode, STR_SNAPSHOT_MODE_EVERY_MOVE) ?
-     SNAPSHOT_MODE_EVERY_MOVE : SNAPSHOT_MODE_OFF);
+     SNAPSHOT_MODE_EVERY_MOVE :
+     strEqual(setup.engine_snapshot_mode, STR_SNAPSHOT_MODE_EVERY_COLLECT) ?
+     SNAPSHOT_MODE_EVERY_COLLECT : SNAPSHOT_MODE_OFF);
+  game.snapshot.save_snapshot = FALSE;
+
+  /* ---------- initialize level time for Supaplex engine ------------------- */
+  /* Supaplex levels with time limit currently unsupported -- should be added */
+  if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
+    level.time = 0;
 }
 
 int get_num_special_action(int element, int action_first, int action_last)
@@ -3091,28 +3285,35 @@ void InitGame()
   int initial_move_dir = MV_DOWN;
   int i, j, x, y;
 
-  game_status = GAME_MODE_PLAYING;
-
-  StopAnimation();
+  // required here to update video display before fading (FIX THIS)
+  DrawMaskedBorder(REDRAW_DOOR_2);
 
   if (!game.restart_level)
     CloseDoor(DOOR_CLOSE_1);
 
-  /* needed if different viewport properties defined for playing */
-  ChangeViewportPropertiesIfNeeded();
+  SetGameStatus(GAME_MODE_PLAYING);
 
   if (level_editor_test_game)
     FadeSkipNextFadeIn();
   else
     FadeSetEnterScreen();
 
-  if (CheckIfRedrawGlobalBorderIsNeeded())
+  if (CheckIfGlobalBorderOrPlayfieldViewportHasChanged())
     fade_mask = REDRAW_ALL;
 
+  FadeLevelSoundsAndMusic();
+
+  ExpireSoundLoops(TRUE);
+
   FadeOut(fade_mask);
 
+  /* needed if different viewport properties defined for playing */
+  ChangeViewportPropertiesIfNeeded();
+
   ClearField();
 
+  OpenDoor(GetDoorState() | DOOR_NO_DELAY | DOOR_FORCE_REDRAW);
+
   DrawCompleteVideoDisplay();
 
   InitGameEngine();
@@ -3140,9 +3341,20 @@ void InitGame()
     player->effective_action = 0;
     player->programmed_action = 0;
 
+    player->mouse_action.lx = 0;
+    player->mouse_action.ly = 0;
+    player->mouse_action.button = 0;
+
+    player->effective_mouse_action.lx = 0;
+    player->effective_mouse_action.ly = 0;
+    player->effective_mouse_action.button = 0;
+
     player->score = 0;
     player->score_final = 0;
 
+    player->health = MAX_HEALTH;
+    player->health_final = MAX_HEALTH;
+
     player->gems_still_needed = level.gems_needed;
     player->sokobanfields_still_needed = 0;
     player->lights_still_needed = 0;
@@ -3201,6 +3413,13 @@ void InitGame()
     player->is_bored = FALSE;
     player->is_sleeping = FALSE;
 
+    player->was_waiting = TRUE;
+    player->was_moving = FALSE;
+    player->was_snapping = FALSE;
+    player->was_dropping = FALSE;
+
+    player->force_dropping = FALSE;
+
     player->frame_counter_bored = -1;
     player->frame_counter_sleeping = -1;
 
@@ -3271,8 +3490,10 @@ void InitGame()
     player->LevelSolved_PanelOff = FALSE;
     player->LevelSolved_SaveTape = FALSE;
     player->LevelSolved_SaveScore = FALSE;
+
     player->LevelSolved_CountingTime = 0;
     player->LevelSolved_CountingScore = 0;
+    player->LevelSolved_CountingHealth = 0;
 
     map_player_action[i] = i;
   }
@@ -3883,23 +4104,13 @@ void InitGame()
       }
     }
 
-    scroll_x = (start_x < SBX_Left  + MIDPOSX ? SBX_Left :
-               start_x > SBX_Right + MIDPOSX ? SBX_Right :
-               start_x - MIDPOSX);
-
-    scroll_y = (start_y < SBY_Upper + MIDPOSY ? SBY_Upper :
-               start_y > SBY_Lower + MIDPOSY ? SBY_Lower :
-               start_y - MIDPOSY);
+    scroll_x = SCROLL_POSITION_X(start_x);
+    scroll_y = SCROLL_POSITION_Y(start_y);
   }
   else
   {
-    scroll_x = (local_player->jx < SBX_Left  + MIDPOSX ? SBX_Left :
-               local_player->jx > SBX_Right + MIDPOSX ? SBX_Right :
-               local_player->jx - MIDPOSX);
-
-    scroll_y = (local_player->jy < SBY_Upper + MIDPOSY ? SBY_Upper :
-               local_player->jy > SBY_Lower + MIDPOSY ? SBY_Lower :
-               local_player->jy - MIDPOSY);
+    scroll_x = SCROLL_POSITION_X(local_player->jx);
+    scroll_y = SCROLL_POSITION_Y(local_player->jy);
   }
 
   /* !!! FIX THIS (START) !!! */
@@ -3911,6 +4122,10 @@ void InitGame()
   {
     InitGameEngine_SP();
   }
+  else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+  {
+    InitGameEngine_MM();
+  }
   else
   {
     DrawLevel(REDRAW_FIELD);
@@ -3925,6 +4140,8 @@ void InitGame()
   BlitScreenToBitmap(backbuffer);
   /* !!! FIX THIS (END) !!! */
 
+  DrawMaskedBorder(fade_mask);
+
   FadeIn(fade_mask);
 
 #if 1
@@ -3954,9 +4171,10 @@ void InitGame()
   {
     UnmapGameButtons();
     UnmapTapeButtons();
-    game_gadget[SOUND_CTRL_ID_MUSIC]->checked = setup.sound_music;
-    game_gadget[SOUND_CTRL_ID_LOOPS]->checked = setup.sound_loops;
-    game_gadget[SOUND_CTRL_ID_SIMPLE]->checked = setup.sound_simple;
+
+    FreeGameButtons();
+    CreateGameButtons();
+
     MapGameButtons();
     MapTapeButtons();
 
@@ -4010,16 +4228,30 @@ void InitGame()
 
   game.restart_level = FALSE;
 
+  if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+    InitGameActions_MM();
+
   SaveEngineSnapshotToListInitial();
 }
 
-void UpdateEngineValues(int actual_scroll_x, int actual_scroll_y)
+void UpdateEngineValues(int actual_scroll_x, int actual_scroll_y,
+                       int actual_player_x, int actual_player_y)
 {
   /* this is used for non-R'n'D game engines to update certain engine values */
 
+  if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
+  {
+    actual_player_x = correctLevelPosX_EM(actual_player_x);
+    actual_player_y = correctLevelPosY_EM(actual_player_y);
+  }
+
   /* needed to determine if sounds are played within the visible screen area */
   scroll_x = actual_scroll_x;
   scroll_y = actual_scroll_y;
+
+  /* needed to get player position for "follow finger" playing input method */
+  local_player->jx = actual_player_x;
+  local_player->jy = actual_player_y;
 }
 
 void InitMovDir(int x, int y)
@@ -4226,21 +4458,32 @@ static void PlayerWins(struct PlayerInfo *player)
   player->GameOver = TRUE;
 
   player->score_final = (level.game_engine_type == GAME_ENGINE_TYPE_EM ?
-                        level.native_em_level->lev->score : player->score);
+                        level.native_em_level->lev->score :
+                        level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+                        game_mm.score :
+                        player->score);
+  player->health_final = (level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+                         MM_HEALTH(game_mm.laser_overload_value) :
+                         player->health);
 
   player->LevelSolved_CountingTime = (game.no_time_limit ? TimePlayed :
                                      TimeLeft);
   player->LevelSolved_CountingScore = player->score_final;
+  player->LevelSolved_CountingHealth = player->health_final;
 }
 
 void GameWon()
 {
+  static int time_count_steps;
   static int time, time_final;
   static int score, score_final;
+  static int health, health_final;
   static int game_over_delay_1 = 0;
   static int game_over_delay_2 = 0;
+  static int game_over_delay_3 = 0;
   int game_over_delay_value_1 = 50;
-  int game_over_delay_value_2 = 50;
+  int game_over_delay_value_2 = 25;
+  int game_over_delay_value_3 = 50;
 
   if (!local_player->LevelSolved_GameWon)
   {
@@ -4266,24 +4509,42 @@ void GameWon()
 
     TapeStop();
 
-    game_over_delay_1 = game_over_delay_value_1;
-    game_over_delay_2 = game_over_delay_value_2;
+    game_over_delay_1 = 0;
+    game_over_delay_2 = 0;
+    game_over_delay_3 = game_over_delay_value_3;
 
     time = time_final = (game.no_time_limit ? TimePlayed : TimeLeft);
     score = score_final = local_player->score_final;
+    health = health_final = local_player->health_final;
 
-    if (TimeLeft > 0)
-    {
-      time_final = 0;
-      score_final += TimeLeft * level.score[SC_TIME_BONUS];
-    }
-    else if (game.no_time_limit && TimePlayed < 999)
+    if (level.score[SC_TIME_BONUS] > 0)
     {
-      time_final = 999;
-      score_final += (999 - TimePlayed) * level.score[SC_TIME_BONUS];
-    }
+      if (TimeLeft > 0)
+      {
+       time_final = 0;
+       score_final += TimeLeft * level.score[SC_TIME_BONUS];
+      }
+      else if (game.no_time_limit && TimePlayed < 999)
+      {
+       time_final = 999;
+       score_final += (999 - TimePlayed) * level.score[SC_TIME_BONUS];
+      }
+
+      time_count_steps = MAX(1, ABS(time_final - time) / 100);
+
+      game_over_delay_1 = game_over_delay_value_1;
 
-    local_player->score_final = score_final;
+      if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+      {
+       health_final = 0;
+       score_final += health * level.score[SC_TIME_BONUS];
+
+       game_over_delay_2 = game_over_delay_value_2;
+      }
+
+      local_player->score_final = score_final;
+      local_player->health_final = health_final;
+    }
 
     if (level_editor_test_game)
     {
@@ -4355,7 +4616,9 @@ void GameWon()
   {
     int time_to_go = ABS(time_final - time);
     int time_count_dir = (time < time_final ? +1 : -1);
-    int time_count_steps = (time_to_go > 100 && time_to_go % 10 == 0 ? 10 : 1);
+
+    if (time_to_go < time_count_steps)
+      time_count_steps = 1;
 
     time  += time_count_steps * time_count_dir;
     score += time_count_steps * level.score[SC_TIME_BONUS];
@@ -4378,8 +4641,6 @@ void GameWon()
     return;
   }
 
-  local_player->LevelSolved_PanelOff = TRUE;
-
   if (game_over_delay_2 > 0)
   {
     game_over_delay_2--;
@@ -4387,6 +4648,40 @@ void GameWon()
     return;
   }
 
+  if (health != health_final)
+  {
+    int health_count_dir = (health < health_final ? +1 : -1);
+
+    health += health_count_dir;
+    score  += level.score[SC_TIME_BONUS];
+
+    local_player->LevelSolved_CountingHealth = health;
+    local_player->LevelSolved_CountingScore = score;
+
+    game_panel_controls[GAME_PANEL_HEALTH].value = health;
+    game_panel_controls[GAME_PANEL_SCORE].value = score;
+
+    DisplayGameControlValues();
+
+    if (health == health_final)
+      StopSound(SND_GAME_LEVELTIME_BONUS);
+    else if (setup.sound_loops)
+      PlaySoundLoop(SND_GAME_LEVELTIME_BONUS);
+    else
+      PlaySound(SND_GAME_LEVELTIME_BONUS);
+
+    return;
+  }
+
+  local_player->LevelSolved_PanelOff = TRUE;
+
+  if (game_over_delay_3 > 0)
+  {
+    game_over_delay_3--;
+
+    return;
+  }
+
   GameEnd();
 }
 
@@ -4409,7 +4704,7 @@ void GameEnd()
 
   if (level_editor_test_game)
   {
-    game_status = GAME_MODE_MAIN;
+    SetGameStatus(GAME_MODE_MAIN);
 
     DrawMainMenu();
 
@@ -4418,9 +4713,7 @@ void GameEnd()
 
   if (!local_player->LevelSolved_SaveScore)
   {
-    FadeOut(REDRAW_FIELD);
-
-    game_status = GAME_MODE_MAIN;
+    SetGameStatus(GAME_MODE_MAIN);
 
     DrawMainMenu();
 
@@ -4434,12 +4727,13 @@ void GameEnd()
     SaveLevelSetup_SeriesInfo();
   }
 
-  if (level_nr < leveldir_current->last_level)
+  if (setup.increment_levels &&
+      level_nr < leveldir_current->last_level)
     raise_level = TRUE;                        /* advance to next level */
 
   if ((hi_pos = NewHiScore()) >= 0) 
   {
-    game_status = GAME_MODE_SCORES;
+    SetGameStatus(GAME_MODE_SCORES);
 
     DrawHallOfFame(hi_pos);
 
@@ -4451,9 +4745,7 @@ void GameEnd()
   }
   else
   {
-    FadeOut(REDRAW_FIELD);
-
-    game_status = GAME_MODE_MAIN;
+    SetGameStatus(GAME_MODE_MAIN);
 
     if (raise_level)
     {
@@ -4469,6 +4761,7 @@ int NewHiScore()
 {
   int k, l;
   int position = -1;
+  boolean one_score_entry_per_name = !program.many_scores_per_name;
 
   LoadScore(level_nr);
 
@@ -4486,13 +4779,15 @@ int NewHiScore()
       {
        int m = MAX_SCORE_ENTRIES - 1;
 
-#ifdef ONE_PER_NAME
-       for (l = k; l < MAX_SCORE_ENTRIES; l++)
-         if (strEqual(setup.player_name, highscore[l].Name))
-           m = l;
-       if (m == k)     /* player's new highscore overwrites his old one */
-         goto put_into_list;
-#endif
+       if (one_score_entry_per_name)
+       {
+         for (l = k; l < MAX_SCORE_ENTRIES; l++)
+           if (strEqual(setup.player_name, highscore[l].Name))
+             m = l;
+
+         if (m == k)   /* player's new highscore overwrites his old one */
+           goto put_into_list;
+       }
 
        for (l = m; l > k; l--)
        {
@@ -4501,22 +4796,19 @@ int NewHiScore()
        }
       }
 
-#ifdef ONE_PER_NAME
       put_into_list:
-#endif
+
       strncpy(highscore[k].Name, setup.player_name, MAX_PLAYER_NAME_LEN);
       highscore[k].Name[MAX_PLAYER_NAME_LEN] = '\0';
       highscore[k].Score = local_player->score_final; 
       position = k;
+
       break;
     }
-
-#ifdef ONE_PER_NAME
-    else if (!strncmp(setup.player_name, highscore[k].Name,
+    else if (one_score_entry_per_name &&
+            !strncmp(setup.player_name, highscore[k].Name,
                      MAX_PLAYER_NAME_LEN))
       break;   /* player already there with a higher score */
-#endif
-
   }
 
   if (position >= 0) 
@@ -4563,11 +4855,14 @@ void InitPlayerGfxAnimation(struct PlayerInfo *player, int action, int dir)
   }
 }
 
-static void ResetGfxFrame(int x, int y, boolean redraw)
+static void ResetGfxFrame(int x, int y)
 {
+  // profiling showed that "autotest" spends 10~20% of its time in this function
+  if (DrawingDeactivatedField())
+    return;
+
   int element = Feld[x][y];
   int graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
-  int last_gfx_frame = GfxFrame[x][y];
 
   if (graphic_info[graphic].anim_global_sync)
     GfxFrame[x][y] = FrameCounter;
@@ -4577,9 +4872,6 @@ static void ResetGfxFrame(int x, int y, boolean redraw)
     GfxFrame[x][y] = element_info[element].collect_score;
   else if (ANIM_MODE(graphic) == ANIM_CE_DELAY)
     GfxFrame[x][y] = ChangeDelay[x][y];
-
-  if (redraw && GfxFrame[x][y] != last_gfx_frame)
-    DrawLevelGraphicAnimation(x, y, graphic);
 }
 
 static void ResetGfxAnimation(int x, int y)
@@ -4588,7 +4880,7 @@ static void ResetGfxAnimation(int x, int y)
   GfxDir[x][y] = MovDir[x][y];
   GfxFrame[x][y] = 0;
 
-  ResetGfxFrame(x, y, FALSE);
+  ResetGfxFrame(x, y);
 }
 
 static void ResetRandomAnimationValue(int x, int y)
@@ -4881,168 +5173,92 @@ static void setScreenCenteredToAllPlayers(int *sx, int *sy)
 void DrawRelocateScreen(int old_x, int old_y, int x, int y, int move_dir,
                        boolean center_screen, boolean quick_relocation)
 {
+  unsigned int frame_delay_value_old = GetVideoFrameDelay();
   boolean ffwd_delay = (tape.playing && tape.fast_forward);
   boolean no_delay = (tape.warp_forward);
   int frame_delay_value = (ffwd_delay ? FfwdFrameDelay : GameFrameDelay);
   int wait_delay_value = (no_delay ? 0 : frame_delay_value);
+  int new_scroll_x, new_scroll_y;
 
-  if (quick_relocation)
+  if (level.lazy_relocation && IN_VIS_FIELD(SCREENX(x), SCREENY(y)))
   {
-    if (!IN_VIS_FIELD(SCREENX(x), SCREENY(y)) || center_screen)
-    {
-      if (!level.shifted_relocation || center_screen)
-      {
-       /* quick relocation (without scrolling), with centering of screen */
-
-       scroll_x = (x < SBX_Left  + MIDPOSX ? SBX_Left :
-                   x > SBX_Right + MIDPOSX ? SBX_Right :
-                   x - MIDPOSX);
-
-       scroll_y = (y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                   y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                   y - MIDPOSY);
-      }
-      else
-      {
-       /* quick relocation (without scrolling), but do not center screen */
-
-       int center_scroll_x = (old_x < SBX_Left  + MIDPOSX ? SBX_Left :
-                              old_x > SBX_Right + MIDPOSX ? SBX_Right :
-                              old_x - MIDPOSX);
-
-       int center_scroll_y = (old_y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                              old_y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                              old_y - MIDPOSY);
-
-       int offset_x = x + (scroll_x - center_scroll_x);
-       int offset_y = y + (scroll_y - center_scroll_y);
-
-       scroll_x = (offset_x < SBX_Left  + MIDPOSX ? SBX_Left :
-                   offset_x > SBX_Right + MIDPOSX ? SBX_Right :
-                   offset_x - MIDPOSX);
-
-       scroll_y = (offset_y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                   offset_y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                   offset_y - MIDPOSY);
-      }
-    }
-    else
-    {
-      if (!level.shifted_relocation || center_screen)
-      {
-       /* quick relocation (without scrolling), with centering of screen */
-
-       scroll_x = (x < SBX_Left  + MIDPOSX ? SBX_Left :
-                   x > SBX_Right + MIDPOSX ? SBX_Right :
-                   x - MIDPOSX);
-
-       scroll_y = (y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                   y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                   y - MIDPOSY);
-      }
-      else
-      {
-       /* quick relocation (without scrolling), but do not center screen */
-
-       int center_scroll_x = (old_x < SBX_Left  + MIDPOSX ? SBX_Left :
-                              old_x > SBX_Right + MIDPOSX ? SBX_Right :
-                              old_x - MIDPOSX);
+    /* case 1: quick relocation inside visible screen (without scrolling) */
 
-       int center_scroll_y = (old_y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                              old_y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                              old_y - MIDPOSY);
+    RedrawPlayfield();
 
-       int offset_x = x + (scroll_x - center_scroll_x);
-       int offset_y = y + (scroll_y - center_scroll_y);
-
-       scroll_x = (offset_x < SBX_Left  + MIDPOSX ? SBX_Left :
-                   offset_x > SBX_Right + MIDPOSX ? SBX_Right :
-                   offset_x - MIDPOSX);
+    return;
+  }
 
-       scroll_y = (offset_y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                   offset_y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                   offset_y - MIDPOSY);
-      }
-    }
+  if (!level.shifted_relocation || center_screen)
+  {
+    /* relocation _with_ centering of screen */
 
-    RedrawPlayfield(TRUE, 0,0,0,0);
+    new_scroll_x = SCROLL_POSITION_X(x);
+    new_scroll_y = SCROLL_POSITION_Y(y);
   }
   else
   {
-    int scroll_xx, scroll_yy;
+    /* relocation _without_ centering of screen */
 
-    if (!level.shifted_relocation || center_screen)
-    {
-      /* visible relocation (with scrolling), with centering of screen */
+    int center_scroll_x = SCROLL_POSITION_X(old_x);
+    int center_scroll_y = SCROLL_POSITION_Y(old_y);
+    int offset_x = x + (scroll_x - center_scroll_x);
+    int offset_y = y + (scroll_y - center_scroll_y);
 
-      scroll_xx = (x < SBX_Left  + MIDPOSX ? SBX_Left :
-                  x > SBX_Right + MIDPOSX ? SBX_Right :
-                  x - MIDPOSX);
+    /* for new screen position, apply previous offset to center position */
+    new_scroll_x = SCROLL_POSITION_X(offset_x);
+    new_scroll_y = SCROLL_POSITION_Y(offset_y);
+  }
 
-      scroll_yy = (y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                  y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                  y - MIDPOSY);
-    }
-    else
-    {
-      /* visible relocation (with scrolling), but do not center screen */
+  if (quick_relocation)
+  {
+    /* case 2: quick relocation (redraw without visible scrolling) */
 
-      int center_scroll_x = (old_x < SBX_Left  + MIDPOSX ? SBX_Left :
-                            old_x > SBX_Right + MIDPOSX ? SBX_Right :
-                            old_x - MIDPOSX);
+    scroll_x = new_scroll_x;
+    scroll_y = new_scroll_y;
 
-      int center_scroll_y = (old_y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                            old_y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                            old_y - MIDPOSY);
+    RedrawPlayfield();
 
-      int offset_x = x + (scroll_x - center_scroll_x);
-      int offset_y = y + (scroll_y - center_scroll_y);
+    return;
+  }
 
-      scroll_xx = (offset_x < SBX_Left  + MIDPOSX ? SBX_Left :
-                  offset_x > SBX_Right + MIDPOSX ? SBX_Right :
-                  offset_x - MIDPOSX);
+  /* case 3: visible relocation (with scrolling to new position) */
 
-      scroll_yy = (offset_y < SBY_Upper + MIDPOSY ? SBY_Upper :
-                  offset_y > SBY_Lower + MIDPOSY ? SBY_Lower :
-                  offset_y - MIDPOSY);
-    }
+  ScrollScreen(NULL, SCROLL_GO_ON);    /* scroll last frame to full tile */
 
+  SetVideoFrameDelay(wait_delay_value);
 
-    ScrollScreen(NULL, SCROLL_GO_ON);  /* scroll last frame to full tile */
+  while (scroll_x != new_scroll_x || scroll_y != new_scroll_y)
+  {
+    int dx = 0, dy = 0;
+    int fx = FX, fy = FY;
 
-    while (scroll_x != scroll_xx || scroll_y != scroll_yy)
-    {
-      int dx = 0, dy = 0;
-      int fx = FX, fy = FY;
+    dx = (new_scroll_x < scroll_x ? +1 : new_scroll_x > scroll_x ? -1 : 0);
+    dy = (new_scroll_y < scroll_y ? +1 : new_scroll_y > scroll_y ? -1 : 0);
 
-      dx = (scroll_xx < scroll_x ? +1 : scroll_xx > scroll_x ? -1 : 0);
-      dy = (scroll_yy < scroll_y ? +1 : scroll_yy > scroll_y ? -1 : 0);
+    if (dx == 0 && dy == 0)            /* no scrolling needed at all */
+      break;
 
-      if (dx == 0 && dy == 0)          /* no scrolling needed at all */
-       break;
+    scroll_x -= dx;
+    scroll_y -= dy;
 
-      scroll_x -= dx;
-      scroll_y -= dy;
+    fx += dx * TILEX / 2;
+    fy += dy * TILEY / 2;
 
-      fx += dx * TILEX / 2;
-      fy += dy * TILEY / 2;
+    ScrollLevel(dx, dy);
+    DrawAllPlayers();
 
-      ScrollLevel(dx, dy);
-      DrawAllPlayers();
+    /* scroll in two steps of half tile size to make things smoother */
+    BlitBitmap(drawto_field, window, fx, fy, SXSIZE, SYSIZE, SX, SY);
 
-      /* scroll in two steps of half tile size to make things smoother */
-      BlitBitmap(drawto_field, window, fx, fy, SXSIZE, SYSIZE, SX, SY);
-      Delay(wait_delay_value);
+    /* scroll second step to align at full tile size */
+    BlitScreenToBitmap(window);
+  }
 
-      /* scroll second step to align at full tile size */
-      BackToFront();
-      Delay(wait_delay_value);
-    }
+  DrawAllPlayers();
+  BackToFront();
 
-    DrawAllPlayers();
-    BackToFront();
-    Delay(wait_delay_value);
-  }
+  SetVideoFrameDelay(frame_delay_value_old);
 }
 
 void RelocatePlayer(int jx, int jy, int el_player_raw)
@@ -5092,8 +5308,7 @@ void RelocatePlayer(int jx, int jy, int el_player_raw)
 
       DrawPlayer(player);
 
-      BackToFront();
-      Delay(wait_delay_value);
+      BackToFront_WithFrameDelay(wait_delay_value);
     }
 
     DrawPlayer(player);                /* needed here only to cleanup last field */
@@ -7111,7 +7326,7 @@ static void TurnRound(int x, int y)
   if (MovDelay[x][y])
     GfxAction[x][y] = ACTION_TURNING_FROM_LEFT + MV_DIR_TO_BIT(direction);
 
-  ResetGfxFrame(x, y, FALSE);
+  ResetGfxFrame(x, y);
 }
 
 static boolean JustBeingPushed(int x, int y)
@@ -9551,6 +9766,8 @@ static void ExecuteCustomElementAction(int x, int y, int element, int page)
     {
       local_player->gems_still_needed = action_arg_number_new;
 
+      game.snapshot.collected_item = TRUE;
+
       game_panel_controls[GAME_PANEL_GEMS].value =
        local_player->gems_still_needed;
 
@@ -10239,9 +10456,50 @@ static void HandleElementChange(int x, int y, int page)
     {
       /* !!! not clear why graphic animation should be reset at all here !!! */
       /* !!! UPDATE: but is needed for correct Snake Bite tail animation !!! */
+      /* !!! SOLUTION: do not reset if graphics engine set to 4 or above !!! */
+
+      /*
+       GRAPHICAL BUG ADDRESSED BY CHECKING GRAPHICS ENGINE VERSION:
+
+       When using an animation frame delay of 1 (this only happens with
+       "sp_zonk.moving.left/right" in the classic graphics), the default
+       (non-moving) animation shows wrong animation frames (while the
+       moving animation, like "sp_zonk.moving.left/right", is correct,
+       so this graphical bug never shows up with the classic graphics).
+       For an animation with 4 frames, this causes wrong frames 0,0,1,2
+       be drawn instead of the correct frames 0,1,2,3. This is caused by
+       "GfxFrame[][]" being reset *twice* (in two successive frames) after
+       an element change: First when the change delay ("ChangeDelay[][]")
+       counter has reached zero after decrementing, then a second time in
+       the next frame (after "GfxFrame[][]" was already incremented) when
+       "ChangeDelay[][]" is reset to the initial delay value again.
+
+       This causes frame 0 to be drawn twice, while the last frame won't
+       be drawn anymore, resulting in the wrong frame sequence 0,0,1,2.
+
+       As some animations may already be cleverly designed around this bug
+       (at least the "Snake Bite" snake tail animation does this), it cannot
+       simply be fixed here without breaking such existing animations.
+       Unfortunately, it cannot easily be detected if a graphics set was
+       designed "before" or "after" the bug was fixed. As a workaround,
+       a new graphics set option "game.graphics_engine_version" was added
+       to be able to specify the game's major release version for which the
+       graphics set was designed, which can then be used to decide if the
+       bugfix should be used (version 4 and above) or not (version 3 or
+       below, or if no version was specified at all, as with old sets).
+
+       (The wrong/fixed animation frames can be tested with the test level set
+       "test_gfxframe" and level "000", which contains a specially prepared
+       custom element at level position (x/y) == (11/9) which uses the zonk
+       animation mentioned above. Using "game.graphics_engine_version: 4"
+       fixes the wrong animation frames, showing the correct frames 0,1,2,3.
+       This can also be seen from the debug output for this test element.)
+      */
+
       /* when a custom element is about to change (for example by change delay),
         do not reset graphic animation when the custom element is moving */
-      if (!IS_MOVING(x, y))
+      if (game.graphics_engine_version < 4 &&
+         !IS_MOVING(x, y))
       {
        ResetGfxAnimation(x, y);
        ResetRandomAnimationValue(x, y);
@@ -10693,32 +10951,28 @@ static void SetPlayerWaiting(struct PlayerInfo *player, boolean is_waiting)
 
 static void CheckSaveEngineSnapshot(struct PlayerInfo *player)
 {
-  static boolean player_was_moving = FALSE;
-  static boolean player_was_snapping = FALSE;
-  static boolean player_was_dropping = FALSE;
-
-  if ((!player->is_moving  && player_was_moving) ||
-      (player->MovPos == 0 && player_was_moving) ||
-      (player->is_snapping && !player_was_snapping) ||
-      (player->is_dropping && !player_was_dropping))
+  if ((!player->is_moving  && player->was_moving) ||
+      (player->MovPos == 0 && player->was_moving) ||
+      (player->is_snapping && !player->was_snapping) ||
+      (player->is_dropping && !player->was_dropping))
   {
-    if (!SaveEngineSnapshotToList())
+    if (!CheckSaveEngineSnapshotToList())
       return;
 
-    player_was_moving = FALSE;
-    player_was_snapping = TRUE;
-    player_was_dropping = TRUE;
+    player->was_moving = FALSE;
+    player->was_snapping = TRUE;
+    player->was_dropping = TRUE;
   }
   else
   {
     if (player->is_moving)
-      player_was_moving = TRUE;
+      player->was_moving = TRUE;
 
     if (!player->is_snapping)
-      player_was_snapping = FALSE;
+      player->was_snapping = FALSE;
 
     if (!player->is_dropping)
-      player_was_dropping = FALSE;
+      player->was_dropping = FALSE;
   }
 }
 
@@ -10728,7 +10982,9 @@ static void CheckSingleStepMode(struct PlayerInfo *player)
   {
     /* as it is called "single step mode", just return to pause mode when the
        player stopped moving after one tile (or never starts moving at all) */
-    if (!player->is_moving && !player->is_pushing)
+    if (!player->is_moving &&
+       !player->is_pushing &&
+       !player->is_dropping_pressed)
     {
       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
       SnapField(player, 0, 0);                 /* stop snapping */
@@ -10794,6 +11050,28 @@ static byte PlayerActions(struct PlayerInfo *player, byte player_action)
   }
 }
 
+static void SetMouseActionFromTapeAction(struct MouseActionInfo *mouse_action,
+                                        byte *tape_action)
+{
+  if (!tape.use_mouse)
+    return;
+
+  mouse_action->lx     = tape_action[TAPE_ACTION_LX];
+  mouse_action->ly     = tape_action[TAPE_ACTION_LY];
+  mouse_action->button = tape_action[TAPE_ACTION_BUTTON];
+}
+
+static void SetTapeActionFromMouseAction(byte *tape_action,
+                                        struct MouseActionInfo *mouse_action)
+{
+  if (!tape.use_mouse)
+    return;
+
+  tape_action[TAPE_ACTION_LX]     = mouse_action->lx;
+  tape_action[TAPE_ACTION_LY]     = mouse_action->ly;
+  tape_action[TAPE_ACTION_BUTTON] = mouse_action->button;
+}
+
 static void CheckLevelTime()
 {
   int i;
@@ -10831,6 +11109,21 @@ static void CheckLevelTime()
     if (game_sp.GameOver)                              /* game lost */
       AllPlayersGone = TRUE;
   }
+  else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+  {
+    if (game_mm.level_solved &&
+       !game_mm.game_over)                             /* game won */
+    {
+      PlayerWins(local_player);
+
+      game_mm.game_over = TRUE;
+
+      AllPlayersGone = TRUE;
+    }
+
+    if (game_mm.game_over)                             /* game lost */
+      AllPlayersGone = TRUE;
+  }
 
   if (TimeFrames >= FRAMES_PER_SECOND)
   {
@@ -10963,32 +11256,17 @@ void StartGameActions(boolean init_network_game, boolean record_tape,
   InitGame();
 }
 
-void GameActions()
+void GameActionsExt()
 {
+#if 0
   static unsigned int game_frame_delay = 0;
+#endif
   unsigned int game_frame_delay_value;
   byte *recorded_player_action;
   byte summarized_player_action = 0;
   byte tape_action[MAX_PLAYERS];
   int i;
 
-  for (i = 0; i < MAX_PLAYERS; i++)
-  {
-    struct PlayerInfo *player = &stored_player[i];
-
-    // allow engine snapshot if movement attempt was stopped
-    if ((game.snapshot.last_action[i] & KEY_MOTION) != 0 &&
-       (player->action & KEY_MOTION) == 0)
-      game.snapshot.changed_action = TRUE;
-
-    // allow engine snapshot in case of snapping/dropping attempt
-    if ((game.snapshot.last_action[i] & KEY_BUTTON) == 0 &&
-       (player->action & KEY_BUTTON) != 0)
-      game.snapshot.changed_action = TRUE;
-
-    game.snapshot.last_action[i] = player->action;
-  }
-
   /* detect endless loops, caused by custom element programming */
   if (recursion_loop_detected && recursion_loop_depth == 0)
   {
@@ -11044,6 +11322,21 @@ void GameActions()
     if (game_sp.GameOver)                              /* game lost */
       AllPlayersGone = TRUE;
   }
+  else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+  {
+    if (game_mm.level_solved &&
+       !game_mm.game_over)                             /* game won */
+    {
+      PlayerWins(local_player);
+
+      game_mm.game_over = TRUE;
+
+      AllPlayersGone = TRUE;
+    }
+
+    if (game_mm.game_over)                             /* game lost */
+      AllPlayersGone = TRUE;
+  }
 
   if (local_player->LevelSolved && !local_player->LevelSolved_GameEnd)
     GameWon();
@@ -11060,6 +11353,9 @@ void GameActions()
   if (tape.playing && tape.warp_forward && !tape.pausing)
     game_frame_delay_value = 0;
 
+  SetVideoFrameDelay(game_frame_delay_value);
+
+#if 0
 #if 0
   /* ---------- main game synchronization point ---------- */
 
@@ -11071,6 +11367,7 @@ void GameActions()
   /* ---------- main game synchronization point ---------- */
 
   WaitUntilDelayReached(&game_frame_delay, game_frame_delay_value);
+#endif
 #endif
 
   if (network_playing && !network_player_action_received)
@@ -11102,6 +11399,12 @@ void GameActions()
   /* when playing tape, read previously recorded player input from tape data */
   recorded_player_action = (tape.playing ? TapePlayAction() : NULL);
 
+  local_player->effective_mouse_action = local_player->mouse_action;
+
+  if (recorded_player_action != NULL)
+    SetMouseActionFromTapeAction(&local_player->effective_mouse_action,
+                                recorded_player_action);
+
   /* TapePlayAction() may return NULL when toggling to "pause before death" */
   if (tape.pausing)
     return;
@@ -11125,8 +11428,11 @@ void GameActions()
     SendToServer_MovePlayer(summarized_player_action);
 #endif
 
+  // summarize all actions at local players mapped input device position
+  // (this allows using different input devices in single player mode)
   if (!options.network && !game.team_mode)
-    local_player->effective_action = summarized_player_action;
+    stored_player[map_player_action[local_player->index_nr]].effective_action =
+      summarized_player_action;
 
   if (tape.recording &&
       setup.team_mode &&
@@ -11155,6 +11461,9 @@ void GameActions()
       tape.player_participates[i] = TRUE;
   }
 
+  SetTapeActionFromMouseAction(tape_action,
+                              &local_player->effective_mouse_action);
+
   /* only record actions from input devices, but not programmed actions */
   if (tape.recording)
     TapeRecordAction(tape_action);
@@ -11162,6 +11471,7 @@ void GameActions()
 #if USE_NEW_PLAYER_ASSIGNMENTS
   // !!! also map player actions in single player mode !!!
   // if (game.team_mode)
+  if (1)
   {
     byte mapped_action[MAX_PLAYERS];
 
@@ -11195,6 +11505,21 @@ void GameActions()
 #endif
 #endif
 
+  for (i = 0; i < MAX_PLAYERS; i++)
+  {
+    // allow engine snapshot in case of changed movement attempt
+    if ((game.snapshot.last_action[i] & KEY_MOTION) !=
+       (stored_player[i].effective_action & KEY_MOTION))
+      game.snapshot.changed_action = TRUE;
+
+    // allow engine snapshot in case of snapping/dropping attempt
+    if ((game.snapshot.last_action[i] & KEY_BUTTON) == 0 &&
+       (stored_player[i].effective_action & KEY_BUTTON) != 0)
+      game.snapshot.changed_action = TRUE;
+
+    game.snapshot.last_action[i] = stored_player[i].effective_action;
+  }
+
   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
   {
     GameActions_EM_Main();
@@ -11203,6 +11528,10 @@ void GameActions()
   {
     GameActions_SP_Main();
   }
+  else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+  {
+    GameActions_MM_Main();
+  }
   else
   {
     GameActions_RND_Main();
@@ -11214,7 +11543,7 @@ void GameActions()
 
   AdvanceFrameAndPlayerCounters(-1);   /* advance counters for all players */
 
-  if (options.debug)                   /* calculate frames per second */
+  if (global.show_frames_per_second)
   {
     static unsigned int fps_counter = 0;
     static int fps_frames = 0;
@@ -11222,18 +11551,41 @@ void GameActions()
 
     fps_frames++;
 
-    if (fps_delay_ms >= 500)   /* calculate fps every 0.5 seconds */
+    if (fps_delay_ms >= 500)   /* calculate FPS every 0.5 seconds */
     {
       global.frames_per_second = 1000 * (float)fps_frames / fps_delay_ms;
 
       fps_frames = 0;
       fps_counter = Counter();
+
+      /* always draw FPS to screen after FPS value was updated */
+      redraw_mask |= REDRAW_FPS;
     }
 
-    redraw_mask |= REDRAW_FPS;
+    /* only draw FPS if no screen areas are deactivated (invisible warp mode) */
+    if (GetDrawDeactivationMask() == REDRAW_NONE)
+      redraw_mask |= REDRAW_FPS;
   }
 }
 
+static void GameActions_CheckSaveEngineSnapshot()
+{
+  if (!game.snapshot.save_snapshot)
+    return;
+
+  // clear flag for saving snapshot _before_ saving snapshot
+  game.snapshot.save_snapshot = FALSE;
+
+  SaveEngineSnapshotToList();
+}
+
+void GameActions()
+{
+  GameActionsExt();
+
+  GameActions_CheckSaveEngineSnapshot();
+}
+
 void GameActions_EM_Main()
 {
   byte effective_action[MAX_PLAYERS];
@@ -11256,6 +11608,21 @@ void GameActions_SP_Main()
     effective_action[i] = stored_player[i].effective_action;
 
   GameActions_SP(effective_action, warp_mode);
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+  {
+    if (stored_player[i].force_dropping)
+      stored_player[i].action |= KEY_BUTTON_DROP;
+
+    stored_player[i].force_dropping = FALSE;
+  }
+}
+
+void GameActions_MM_Main()
+{
+  boolean warp_mode = (tape.playing && tape.warp_forward && !tape.pausing);
+
+  GameActions_MM(local_player->effective_mouse_action, warp_mode);
 }
 
 void GameActions_RND_Main()
@@ -11266,7 +11633,7 @@ void GameActions_RND_Main()
 void GameActions_RND()
 {
   int magic_wall_x = 0, magic_wall_y = 0;
-  int i, x, y, element, graphic;
+  int i, x, y, element, graphic, last_gfx_frame;
 
   InitPlayfieldScanModeVars();
 
@@ -11453,8 +11820,12 @@ void GameActions_RND()
   {
     element = Feld[x][y];
     graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
+    last_gfx_frame = GfxFrame[x][y];
+
+    ResetGfxFrame(x, y);
 
-    ResetGfxFrame(x, y, TRUE);
+    if (GfxFrame[x][y] != last_gfx_frame && !Stop[x][y])
+      DrawLevelGraphicAnimation(x, y, graphic);
 
     if (ANIM_MODE(graphic) == ANIM_RANDOM &&
        IS_NEXT_FRAME(GfxFrame[x][y], graphic))
@@ -11499,8 +11870,12 @@ void GameActions_RND()
       if (IS_GEM(element) || element == EL_SP_INFOTRON)
        TEST_DrawTwinkleOnField(x, y);
     }
-    else if ((element == EL_ACID ||
-             element == EL_EXIT_OPEN ||
+    else if (element == EL_ACID)
+    {
+      if (!Stop[x][y])
+       DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
+    }
+    else if ((element == EL_EXIT_OPEN ||
              element == EL_EM_EXIT_OPEN ||
              element == EL_SP_EXIT_OPEN ||
              element == EL_STEEL_EXIT_OPEN ||
@@ -12064,7 +12439,7 @@ boolean MovePlayer(struct PlayerInfo *player, int dx, int dy)
       AdvanceFrameAndPlayerCounters(player->index_nr);
 
       DrawAllPlayers();
-      BackToFront();
+      BackToFront_WithFrameDelay(0);
     }
 
     player->move_delay_value = original_move_delay_value;
@@ -13476,6 +13851,8 @@ static int DigField(struct PlayerInfo *player,
       if (local_player->gems_still_needed < 0)
        local_player->gems_still_needed = 0;
 
+      game.snapshot.collected_item = TRUE;
+
       game_panel_controls[GAME_PANEL_GEMS].value = local_player->gems_still_needed;
 
       DisplayGameControlValues();
@@ -13674,9 +14051,16 @@ static int DigField(struct PlayerInfo *player,
       SCAN_PLAYFIELD(xx, yy)
       {
        if (Feld[xx][yy] == EL_SP_DISK_YELLOW)
+       {
          Bang(xx, yy);
+       }
        else if (Feld[xx][yy] == EL_SP_TERMINAL)
+       {
          Feld[xx][yy] = EL_SP_TERMINAL_ACTIVE;
+
+         ResetGfxAnimation(xx, yy);
+         TEST_DrawLevelField(xx, yy);
+       }
       }
     }
     else if (IS_BELT_SWITCH(element))
@@ -13950,8 +14334,6 @@ static boolean DropElement(struct PlayerInfo *player)
   int drop_side = drop_direction;
   int drop_element = get_next_dropped_element(player);
 
-  player->is_dropping_pressed = TRUE;
-
   /* do not drop an element on top of another element; when holding drop key
      pressed without moving, dropped element must move away before the next
      element can be dropped (this is especially important if the next element
@@ -13979,6 +14361,9 @@ static boolean DropElement(struct PlayerInfo *player)
   if (new_element == EL_UNDEFINED)
     return FALSE;
 
+  /* only set if player has anything that can be dropped */
+  player->is_dropping_pressed = TRUE;
+
   /* check if drop key was pressed long enough for EM style dynamite */
   if (new_element == EL_EM_DYNAMITE && player->drop_pressed_delay < 40)
     return FALSE;
@@ -14185,12 +14570,43 @@ static void StopLevelSoundActionIfLoop(int x, int y, int action)
     StopSound(sound_effect);
 }
 
-static void PlayLevelMusic()
+static int getLevelMusicNr()
 {
   if (levelset.music[level_nr] != MUS_UNDEFINED)
-    PlayMusic(levelset.music[level_nr]);       /* from config file */
+    return levelset.music[level_nr];           /* from config file */
   else
-    PlayMusic(MAP_NOCONF_MUSIC(level_nr));     /* from music dir */
+    return MAP_NOCONF_MUSIC(level_nr);         /* from music dir */
+}
+
+static void FadeLevelSounds()
+{
+  FadeSounds();
+}
+
+static void FadeLevelMusic()
+{
+  int music_nr = getLevelMusicNr();
+  char *curr_music = getCurrentlyPlayingMusicFilename();
+  char *next_music = getMusicInfoEntryFilename(music_nr);
+
+  if (!strEqual(curr_music, next_music))
+    FadeMusic();
+}
+
+void FadeLevelSoundsAndMusic()
+{
+  FadeLevelSounds();
+  FadeLevelMusic();
+}
+
+static void PlayLevelMusic()
+{
+  int music_nr = getLevelMusicNr();
+  char *curr_music = getCurrentlyPlayingMusicFilename();
+  char *next_music = getMusicInfoEntryFilename(music_nr);
+
+  if (!strEqual(curr_music, next_music))
+    PlayMusic(music_nr);
 }
 
 void PlayLevelSound_EM(int xx, int yy, int element_em, int sample)
@@ -14364,6 +14780,50 @@ void PlayLevelSound_SP(int xx, int yy, int element_sp, int action_sp)
   PlayLevelSoundElementAction(x, y, element, action);
 }
 
+void PlayLevelSound_MM(int xx, int yy, int element_mm, int action_mm)
+{
+  int element = map_element_MM_to_RND(element_mm);
+  int action = map_action_MM_to_RND(action_mm);
+  int offset = 0;
+  int x = xx - offset;
+  int y = yy - offset;
+
+  if (!IS_MM_ELEMENT(element))
+    element = EL_MM_DEFAULT;
+
+  PlayLevelSoundElementAction(x, y, element, action);
+}
+
+void PlaySound_MM(int sound_mm)
+{
+  int sound = map_sound_MM_to_RND(sound_mm);
+
+  if (sound == SND_UNDEFINED)
+    return;
+
+  PlaySound(sound);
+}
+
+void PlaySoundLoop_MM(int sound_mm)
+{
+  int sound = map_sound_MM_to_RND(sound_mm);
+
+  if (sound == SND_UNDEFINED)
+    return;
+
+  PlaySoundLoop(sound);
+}
+
+void StopSound_MM(int sound_mm)
+{
+  int sound = map_sound_MM_to_RND(sound_mm);
+
+  if (sound == SND_UNDEFINED)
+    return;
+
+  StopSound(sound);
+}
+
 void RaiseScore(int value)
 {
   local_player->score += value;
@@ -14468,19 +14928,11 @@ void RequestQuitGameExt(boolean skip_request, boolean quick_quit, char *message)
 #endif
     {
       if (quick_quit)
-      {
        FadeSkipNextFadeIn();
 
-       game_status = GAME_MODE_MAIN;
-
-       DrawMainMenu();
-      }
-      else
-      {
-       game_status = GAME_MODE_MAIN;
+      SetGameStatus(GAME_MODE_MAIN);
 
-       DrawMainMenu();
-      }
+      DrawMainMenu();
     }
   }
   else         /* continue playing the game */
@@ -14660,6 +15112,8 @@ ListNode *SaveEngineSnapshotBuffers()
     SaveEngineSnapshotValues_EM();
   if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
     SaveEngineSnapshotValues_SP(&buffers);
+  if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+    SaveEngineSnapshotValues_MM(&buffers);
 
   /* save values stored in special snapshot structure */
 
@@ -14669,6 +15123,8 @@ ListNode *SaveEngineSnapshotBuffers()
     SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(engine_snapshot_em));
   if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
     SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(engine_snapshot_sp));
+  if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+    SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(engine_snapshot_mm));
 
   /* save further RND engine values */
 
@@ -14765,39 +15221,39 @@ void SaveEngineSnapshotSingle()
   snapshot_level_nr = level_nr;
 }
 
-static boolean SaveEngineSnapshotToListExt(boolean initial_snapshot)
+boolean CheckSaveEngineSnapshotToList()
 {
   boolean save_snapshot =
-    (initial_snapshot ||
-     (game.snapshot.mode == SNAPSHOT_MODE_EVERY_STEP) ||
+    ((game.snapshot.mode == SNAPSHOT_MODE_EVERY_STEP) ||
      (game.snapshot.mode == SNAPSHOT_MODE_EVERY_MOVE &&
-      game.snapshot.changed_action));
+      game.snapshot.changed_action) ||
+     (game.snapshot.mode == SNAPSHOT_MODE_EVERY_COLLECT &&
+      game.snapshot.collected_item));
 
   game.snapshot.changed_action = FALSE;
+  game.snapshot.collected_item = FALSE;
+  game.snapshot.save_snapshot = save_snapshot;
 
+  return save_snapshot;
+}
+
+void SaveEngineSnapshotToList()
+{
   if (game.snapshot.mode == SNAPSHOT_MODE_OFF ||
-      tape.quick_resume ||
-      !save_snapshot)
-    return FALSE;
+      tape.quick_resume)
+    return;
 
   ListNode *buffers = SaveEngineSnapshotBuffers();
 
   /* finally save all snapshot buffers to snapshot list */
   SaveSnapshotToList(buffers);
-
-  return TRUE;
-}
-
-boolean SaveEngineSnapshotToList()
-{
-  return SaveEngineSnapshotToListExt(FALSE);
 }
 
 void SaveEngineSnapshotToListInitial()
 {
   FreeEngineSnapshotList();
 
-  SaveEngineSnapshotToListExt(TRUE);
+  SaveEngineSnapshotToList();
 }
 
 void LoadEngineSnapshotValues()
@@ -14810,6 +15266,8 @@ void LoadEngineSnapshotValues()
     LoadEngineSnapshotValues_EM();
   if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
     LoadEngineSnapshotValues_SP();
+  if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
+    LoadEngineSnapshotValues_MM();
 }
 
 void LoadEngineSnapshotSingle()
@@ -14852,52 +15310,95 @@ static struct
   int graphic;
   struct XY *pos;
   int gadget_id;
+  boolean *setup_value;
+  boolean allowed_on_tape;
   char *infotext;
 } gamebutton_info[NUM_GAME_BUTTONS] =
 {
   {
-    IMG_GAME_BUTTON_GFX_STOP,          &game.button.stop,
-    GAME_CTRL_ID_STOP,                 "stop game"
+    IMG_GFX_GAME_BUTTON_STOP,                  &game.button.stop,
+    GAME_CTRL_ID_STOP,                         NULL,
+    TRUE,                                      "stop game"
+  },
+  {
+    IMG_GFX_GAME_BUTTON_PAUSE,                 &game.button.pause,
+    GAME_CTRL_ID_PAUSE,                                NULL,
+    TRUE,                                      "pause game"
+  },
+  {
+    IMG_GFX_GAME_BUTTON_PLAY,                  &game.button.play,
+    GAME_CTRL_ID_PLAY,                         NULL,
+    TRUE,                                      "play game"
+  },
+  {
+    IMG_GFX_GAME_BUTTON_UNDO,                  &game.button.undo,
+    GAME_CTRL_ID_UNDO,                         NULL,
+    TRUE,                                      "undo step"
+  },
+  {
+    IMG_GFX_GAME_BUTTON_REDO,                  &game.button.redo,
+    GAME_CTRL_ID_REDO,                         NULL,
+    TRUE,                                      "redo step"
+  },
+  {
+    IMG_GFX_GAME_BUTTON_SAVE,                  &game.button.save,
+    GAME_CTRL_ID_SAVE,                         NULL,
+    TRUE,                                      "save game"
+  },
+  {
+    IMG_GFX_GAME_BUTTON_PAUSE2,                        &game.button.pause2,
+    GAME_CTRL_ID_PAUSE2,                       NULL,
+    TRUE,                                      "pause game"
   },
   {
-    IMG_GAME_BUTTON_GFX_PAUSE,         &game.button.pause,
-    GAME_CTRL_ID_PAUSE,                        "pause game"
+    IMG_GFX_GAME_BUTTON_LOAD,                  &game.button.load,
+    GAME_CTRL_ID_LOAD,                         NULL,
+    TRUE,                                      "load game"
   },
   {
-    IMG_GAME_BUTTON_GFX_PLAY,          &game.button.play,
-    GAME_CTRL_ID_PLAY,                 "play game"
+    IMG_GFX_GAME_BUTTON_PANEL_STOP,            &game.button.panel_stop,
+    GAME_CTRL_ID_PANEL_STOP,                   NULL,
+    FALSE,                                     "stop game"
   },
   {
-    IMG_GAME_BUTTON_GFX_UNDO,          &game.button.undo,
-    GAME_CTRL_ID_UNDO,                 "undo step"
+    IMG_GFX_GAME_BUTTON_PANEL_PAUSE,           &game.button.panel_pause,
+    GAME_CTRL_ID_PANEL_PAUSE,                  NULL,
+    FALSE,                                     "pause game"
   },
   {
-    IMG_GAME_BUTTON_GFX_REDO,          &game.button.redo,
-    GAME_CTRL_ID_REDO,                 "redo step"
+    IMG_GFX_GAME_BUTTON_PANEL_PLAY,            &game.button.panel_play,
+    GAME_CTRL_ID_PANEL_PLAY,                   NULL,
+    FALSE,                                     "play game"
   },
   {
-    IMG_GAME_BUTTON_GFX_SAVE,          &game.button.save,
-    GAME_CTRL_ID_SAVE,                 "save game"
+    IMG_GFX_GAME_BUTTON_SOUND_MUSIC,           &game.button.sound_music,
+    SOUND_CTRL_ID_MUSIC,                       &setup.sound_music,
+    TRUE,                                      "background music on/off"
   },
   {
-    IMG_GAME_BUTTON_GFX_PAUSE2,                &game.button.pause2,
-    GAME_CTRL_ID_PAUSE2,               "pause game"
+    IMG_GFX_GAME_BUTTON_SOUND_LOOPS,           &game.button.sound_loops,
+    SOUND_CTRL_ID_LOOPS,                       &setup.sound_loops,
+    TRUE,                                      "sound loops on/off"
   },
   {
-    IMG_GAME_BUTTON_GFX_LOAD,          &game.button.load,
-    GAME_CTRL_ID_LOAD,                 "load game"
+    IMG_GFX_GAME_BUTTON_SOUND_SIMPLE,          &game.button.sound_simple,
+    SOUND_CTRL_ID_SIMPLE,                      &setup.sound_simple,
+    TRUE,                                      "normal sounds on/off"
   },
   {
-    IMG_GAME_BUTTON_GFX_SOUND_MUSIC,   &game.button.sound_music,
-    SOUND_CTRL_ID_MUSIC,               "background music on/off"
+    IMG_GFX_GAME_BUTTON_PANEL_SOUND_MUSIC,     &game.button.panel_sound_music,
+    SOUND_CTRL_ID_PANEL_MUSIC,                 &setup.sound_music,
+    FALSE,                                     "background music on/off"
   },
   {
-    IMG_GAME_BUTTON_GFX_SOUND_LOOPS,   &game.button.sound_loops,
-    SOUND_CTRL_ID_LOOPS,               "sound loops on/off"
+    IMG_GFX_GAME_BUTTON_PANEL_SOUND_LOOPS,     &game.button.panel_sound_loops,
+    SOUND_CTRL_ID_PANEL_LOOPS,                 &setup.sound_loops,
+    FALSE,                                     "sound loops on/off"
   },
   {
-    IMG_GAME_BUTTON_GFX_SOUND_SIMPLE,  &game.button.sound_simple,
-    SOUND_CTRL_ID_SIMPLE,              "normal sounds on/off"
+    IMG_GFX_GAME_BUTTON_PANEL_SOUND_SIMPLE,    &game.button.panel_sound_simple,
+    SOUND_CTRL_ID_PANEL_SIMPLE,                        &setup.sound_simple,
+    FALSE,                                     "normal sounds on/off"
   }
 };
 
@@ -14913,8 +15414,10 @@ void CreateGameButtons()
     int button_type;
     boolean checked;
     unsigned int event_mask;
-    int base_x = (tape.show_game_buttons ? VX : DX);
-    int base_y = (tape.show_game_buttons ? VY : DY);
+    boolean allowed_on_tape = gamebutton_info[i].allowed_on_tape;
+    boolean on_tape = (tape.show_game_buttons && allowed_on_tape);
+    int base_x = (on_tape ? VX : DX);
+    int base_y = (on_tape ? VY : DY);
     int gd_x   = gfx->src_x;
     int gd_y   = gfx->src_y;
     int gd_xp  = gfx->src_x + gfx->pressed_xoffset;
@@ -14933,7 +15436,9 @@ void CreateGameButtons()
     }
 
     if (id == GAME_CTRL_ID_STOP ||
+       id == GAME_CTRL_ID_PANEL_STOP ||
        id == GAME_CTRL_ID_PLAY ||
+       id == GAME_CTRL_ID_PANEL_PLAY ||
        id == GAME_CTRL_ID_SAVE ||
        id == GAME_CTRL_ID_LOAD)
     {
@@ -14951,10 +15456,8 @@ void CreateGameButtons()
     else
     {
       button_type = GD_TYPE_CHECK_BUTTON;
-      checked =
-       ((id == SOUND_CTRL_ID_MUSIC && setup.sound_music) ||
-        (id == SOUND_CTRL_ID_LOOPS && setup.sound_loops) ||
-        (id == SOUND_CTRL_ID_SIMPLE && setup.sound_simple) ? TRUE : FALSE);
+      checked = (gamebutton_info[i].setup_value != NULL ?
+                *gamebutton_info[i].setup_value : FALSE);
       event_mask = GD_EVENT_PRESSED;
     }
 
@@ -14991,7 +15494,7 @@ void FreeGameButtons()
     FreeGadget(game_gadget[i]);
 }
 
-static void MapGameButtonsAtSamePosition(int id)
+static void UnmapGameButtonsAtSamePosition(int id)
 {
   int i;
 
@@ -14999,10 +15502,30 @@ static void MapGameButtonsAtSamePosition(int id)
     if (i != id &&
        gamebutton_info[i].pos->x == gamebutton_info[id].pos->x &&
        gamebutton_info[i].pos->y == gamebutton_info[id].pos->y)
-      MapGadget(game_gadget[i]);
+      UnmapGadget(game_gadget[i]);
 }
 
-static void UnmapGameButtonsAtSamePosition(int id)
+static void UnmapGameButtonsAtSamePosition_All()
+{
+  if (setup.show_snapshot_buttons)
+  {
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_SAVE);
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PAUSE2);
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_LOAD);
+  }
+  else
+  {
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_STOP);
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PAUSE);
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PLAY);
+
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PANEL_STOP);
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PANEL_PAUSE);
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PANEL_PLAY);
+  }
+}
+
+static void MapGameButtonsAtSamePosition(int id)
 {
   int i;
 
@@ -15010,7 +15533,9 @@ static void UnmapGameButtonsAtSamePosition(int id)
     if (i != id &&
        gamebutton_info[i].pos->x == gamebutton_info[id].pos->x &&
        gamebutton_info[i].pos->y == gamebutton_info[id].pos->y)
-      UnmapGadget(game_gadget[i]);
+      MapGadget(game_gadget[i]);
+
+  UnmapGameButtonsAtSamePosition_All();
 }
 
 void MapUndoRedoButtons()
@@ -15020,6 +15545,8 @@ void MapUndoRedoButtons()
 
   MapGadget(game_gadget[GAME_CTRL_ID_UNDO]);
   MapGadget(game_gadget[GAME_CTRL_ID_REDO]);
+
+  ModifyGadget(game_gadget[GAME_CTRL_ID_PAUSE2], GDI_CHECKED, TRUE, GDI_END);
 }
 
 void UnmapUndoRedoButtons()
@@ -15029,52 +15556,98 @@ void UnmapUndoRedoButtons()
 
   MapGameButtonsAtSamePosition(GAME_CTRL_ID_UNDO);
   MapGameButtonsAtSamePosition(GAME_CTRL_ID_REDO);
+
+  ModifyGadget(game_gadget[GAME_CTRL_ID_PAUSE2], GDI_CHECKED, FALSE, GDI_END);
 }
 
-void MapGameButtons()
+void MapGameButtonsExt(boolean on_tape)
 {
   int i;
 
   for (i = 0; i < NUM_GAME_BUTTONS; i++)
-    if (i != GAME_CTRL_ID_UNDO &&
+    if ((!on_tape || gamebutton_info[i].allowed_on_tape) &&
+       i != GAME_CTRL_ID_UNDO &&
        i != GAME_CTRL_ID_REDO)
       MapGadget(game_gadget[i]);
 
-  if (setup.show_snapshot_buttons)
-  {
-    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_SAVE);
-    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PAUSE2);
-    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_LOAD);
-  }
-  else
-  {
-    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_STOP);
-    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PAUSE);
-    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PLAY);
-  }
+  UnmapGameButtonsAtSamePosition_All();
 
   RedrawGameButtons();
 }
 
-void UnmapGameButtons()
+void UnmapGameButtonsExt(boolean on_tape)
 {
   int i;
 
   for (i = 0; i < NUM_GAME_BUTTONS; i++)
-    UnmapGadget(game_gadget[i]);
+    if (!on_tape || gamebutton_info[i].allowed_on_tape)
+      UnmapGadget(game_gadget[i]);
 }
 
-void RedrawGameButtons()
+void RedrawGameButtonsExt(boolean on_tape)
 {
   int i;
 
   for (i = 0; i < NUM_GAME_BUTTONS; i++)
-    RedrawGadget(game_gadget[i]);
+    if (!on_tape || gamebutton_info[i].allowed_on_tape)
+      RedrawGadget(game_gadget[i]);
 
   // RedrawGadget() may have set REDRAW_ALL if buttons are defined off-area
   redraw_mask &= ~REDRAW_ALL;
 }
 
+void SetGadgetState(struct GadgetInfo *gi, boolean state)
+{
+  if (gi == NULL)
+    return;
+
+  gi->checked = state;
+}
+
+void RedrawSoundButtonGadget(int id)
+{
+  int id2 = (id == SOUND_CTRL_ID_MUSIC        ? SOUND_CTRL_ID_PANEL_MUSIC :
+            id == SOUND_CTRL_ID_LOOPS        ? SOUND_CTRL_ID_PANEL_LOOPS :
+            id == SOUND_CTRL_ID_SIMPLE       ? SOUND_CTRL_ID_PANEL_SIMPLE :
+            id == SOUND_CTRL_ID_PANEL_MUSIC  ? SOUND_CTRL_ID_MUSIC :
+            id == SOUND_CTRL_ID_PANEL_LOOPS  ? SOUND_CTRL_ID_LOOPS :
+            id == SOUND_CTRL_ID_PANEL_SIMPLE ? SOUND_CTRL_ID_SIMPLE :
+            id);
+
+  SetGadgetState(game_gadget[id2], *gamebutton_info[id2].setup_value);
+  RedrawGadget(game_gadget[id2]);
+}
+
+void MapGameButtons()
+{
+  MapGameButtonsExt(FALSE);
+}
+
+void UnmapGameButtons()
+{
+  UnmapGameButtonsExt(FALSE);
+}
+
+void RedrawGameButtons()
+{
+  RedrawGameButtonsExt(FALSE);
+}
+
+void MapGameButtonsOnTape()
+{
+  MapGameButtonsExt(TRUE);
+}
+
+void UnmapGameButtonsOnTape()
+{
+  UnmapGameButtonsExt(TRUE);
+}
+
+void RedrawGameButtonsOnTape()
+{
+  RedrawGameButtonsExt(TRUE);
+}
+
 void GameUndoRedoExt()
 {
   ClearPlayerAction();
@@ -15087,8 +15660,7 @@ void GameUndoRedoExt()
   DrawCompleteVideoDisplay();
   DrawVideoDisplay(VIDEO_STATE_TIME_ON, TapeTime);
   DrawVideoDisplay(VIDEO_STATE_FRAME_ON, FrameCounter);
-  DrawVideoDisplay((tape.single_step ? VIDEO_STATE_1STEP_ON :
-                   VIDEO_STATE_1STEP_OFF), 0);
+  DrawVideoDisplay(VIDEO_STATE_1STEP(tape.single_step), 0);
 
   BackToFront();
 }
@@ -15115,6 +15687,7 @@ void GameRedo(int steps)
 
 static void HandleGameButtonsExt(int id, int button)
 {
+  static boolean game_undo_executed = FALSE;
   int steps = BUTTON_STEPSIZE(button);
   boolean handle_game_buttons =
     (game_status == GAME_MODE_PLAYING ||
@@ -15126,6 +15699,7 @@ static void HandleGameButtonsExt(int id, int button)
   switch (id)
   {
     case GAME_CTRL_ID_STOP:
+    case GAME_CTRL_ID_PANEL_STOP:
       if (game_status == GAME_MODE_MAIN)
        break;
 
@@ -15138,6 +15712,7 @@ static void HandleGameButtonsExt(int id, int button)
 
     case GAME_CTRL_ID_PAUSE:
     case GAME_CTRL_ID_PAUSE2:
+    case GAME_CTRL_ID_PANEL_PAUSE:
       if (options.network && game_status == GAME_MODE_PLAYING)
       {
 #if defined(NETWORK_AVALIABLE)
@@ -15149,9 +15724,13 @@ static void HandleGameButtonsExt(int id, int button)
       }
       else
        TapeTogglePause(TAPE_TOGGLE_MANUAL);
+
+      game_undo_executed = FALSE;
+
       break;
 
     case GAME_CTRL_ID_PLAY:
+    case GAME_CTRL_ID_PANEL_PLAY:
       if (game_status == GAME_MODE_MAIN)
       {
         StartGameActions(options.network, setup.autorecord, level.random_seed);
@@ -15163,11 +15742,22 @@ static void HandleGameButtonsExt(int id, int button)
          SendToServer_ContinuePlaying();
        else
 #endif
-         TapeTogglePause(TAPE_TOGGLE_MANUAL);
+         TapeTogglePause(TAPE_TOGGLE_MANUAL | TAPE_TOGGLE_PLAY_PAUSE);
       }
       break;
 
     case GAME_CTRL_ID_UNDO:
+      // Important: When using "save snapshot when collecting an item" mode,
+      // load last (current) snapshot for first "undo" after pressing "pause"
+      // (else the last-but-one snapshot would be loaded, because the snapshot
+      // pointer already points to the last snapshot when pressing "pause",
+      // which is fine for "every step/move" mode, but not for "every collect")
+      if (game.snapshot.mode == SNAPSHOT_MODE_EVERY_COLLECT &&
+         !game_undo_executed)
+       steps--;
+
+      game_undo_executed = TRUE;
+
       GameUndo(steps);
       break;
 
@@ -15184,6 +15774,7 @@ static void HandleGameButtonsExt(int id, int button)
       break;
 
     case SOUND_CTRL_ID_MUSIC:
+    case SOUND_CTRL_ID_PANEL_MUSIC:
       if (setup.sound_music)
       { 
        setup.sound_music = FALSE;
@@ -15196,11 +15787,16 @@ static void HandleGameButtonsExt(int id, int button)
 
        SetAudioMode(setup.sound);
 
-       PlayLevelMusic();
+       if (game_status == GAME_MODE_PLAYING)
+         PlayLevelMusic();
       }
+
+      RedrawSoundButtonGadget(id);
+
       break;
 
     case SOUND_CTRL_ID_LOOPS:
+    case SOUND_CTRL_ID_PANEL_LOOPS:
       if (setup.sound_loops)
        setup.sound_loops = FALSE;
       else if (audio.loops_available)
@@ -15209,9 +15805,13 @@ static void HandleGameButtonsExt(int id, int button)
 
        SetAudioMode(setup.sound);
       }
+
+      RedrawSoundButtonGadget(id);
+
       break;
 
     case SOUND_CTRL_ID_SIMPLE:
+    case SOUND_CTRL_ID_PANEL_SIMPLE:
       if (setup.sound_simple)
        setup.sound_simple = FALSE;
       else if (audio.sound_available)
@@ -15220,6 +15820,9 @@ static void HandleGameButtonsExt(int id, int button)
 
        SetAudioMode(setup.sound);
       }
+
+      RedrawSoundButtonGadget(id);
+
       break;
 
     default:
@@ -15234,7 +15837,6 @@ static void HandleGameButtons(struct GadgetInfo *gi)
 
 void HandleSoundButtonKeys(Key key)
 {
-
   if (key == setup.shortcut.sound_simple)
     ClickOnGadget(game_gadget[SOUND_CTRL_ID_SIMPLE], MB_LEFTBUTTON);
   else if (key == setup.shortcut.sound_loops)