added using setup option for displaying overlay touch buttons
[rocksndiamonds.git] / src / game.c
index 78101becf1c76f8e48e12a5ef252c4344c753350..abf350ce93311d668bc344cc1301affb90fa0a1e 100644 (file)
@@ -1058,7 +1058,10 @@ static void CheckGravityMovementWhenNotMoving(struct PlayerInfo *);
 static void KillPlayerUnlessEnemyProtected(int, int);
 static void KillPlayerUnlessExplosionProtected(int, int);
 
+static void CheckNextToConditions(int, int);
+static void TestIfPlayerNextToCustomElement(int, int);
 static void TestIfPlayerTouchesCustomElement(int, int);
+static void TestIfElementNextToCustomElement(int, int);
 static void TestIfElementTouchesCustomElement(int, int);
 static void TestIfElementHitsCustomElement(int, int, int);
 
@@ -1106,7 +1109,7 @@ void ContinueMoving(int, int);
 void Bang(int, int);
 void InitMovDir(int, int);
 void InitAmoebaNr(int, int);
-int NewHighScore(int);
+void NewHighScore(int, boolean);
 
 void TestIfGoodThingHitsBadThing(int, int, int);
 void TestIfBadThingHitsGoodThing(int, int, int);
@@ -1834,15 +1837,15 @@ static void InitField(int x, int y, boolean init_game)
       break;
 
     case EL_STONEBLOCK:
-      if (x < lev_fieldx-1 && Tile[x+1][y] == EL_ACID)
+      if (x < lev_fieldx - 1 && Tile[x + 1][y] == EL_ACID)
        Tile[x][y] = EL_ACID_POOL_TOPLEFT;
-      else if (x > 0 && Tile[x-1][y] == EL_ACID)
+      else if (x > 0 && Tile[x - 1][y] == EL_ACID)
        Tile[x][y] = EL_ACID_POOL_TOPRIGHT;
-      else if (y > 0 && Tile[x][y-1] == EL_ACID_POOL_TOPLEFT)
+      else if (y > 0 && Tile[x][y - 1] == EL_ACID_POOL_TOPLEFT)
        Tile[x][y] = EL_ACID_POOL_BOTTOMLEFT;
-      else if (y > 0 && Tile[x][y-1] == EL_ACID)
+      else if (y > 0 && Tile[x][y - 1] == EL_ACID)
        Tile[x][y] = EL_ACID_POOL_BOTTOM;
-      else if (y > 0 && Tile[x][y-1] == EL_ACID_POOL_TOPRIGHT)
+      else if (y > 0 && Tile[x][y - 1] == EL_ACID_POOL_TOPRIGHT)
        Tile[x][y] = EL_ACID_POOL_BOTTOMRIGHT;
       break;
 
@@ -2025,6 +2028,14 @@ static void InitField(int x, int y, boolean init_game)
 
        InitField(x, y, init_game);
       }
+      else if (IS_EMPTY_ELEMENT(element))
+      {
+       GfxElementEmpty[x][y] = element;
+       Tile[x][y] = EL_EMPTY;
+
+       if (element_info[element].use_gfx_element)
+         game.use_masked_elements = TRUE;
+      }
 
       break;
   }
@@ -2670,15 +2681,25 @@ static void DisplayGameControlValues(void)
     if (type == TYPE_INTEGER)
     {
       if (nr == GAME_PANEL_LEVEL_NUMBER ||
+         nr == GAME_PANEL_INVENTORY_COUNT ||
+         nr == GAME_PANEL_SCORE ||
+         nr == GAME_PANEL_HIGHSCORE ||
          nr == GAME_PANEL_TIME)
       {
        boolean use_dynamic_size = (size == -1 ? TRUE : FALSE);
 
        if (use_dynamic_size)           // use dynamic number of digits
        {
-         int value_change = (nr == GAME_PANEL_LEVEL_NUMBER ? 100 : 1000);
-         int size1 = (nr == GAME_PANEL_LEVEL_NUMBER ? 2 : 3);
-         int size2 = size1 + 1;
+         int value_change = (nr == GAME_PANEL_LEVEL_NUMBER ? 100 :
+                             nr == GAME_PANEL_INVENTORY_COUNT ||
+                             nr == GAME_PANEL_TIME ? 1000 : 100000);
+         int size_add = (nr == GAME_PANEL_LEVEL_NUMBER ||
+                         nr == GAME_PANEL_INVENTORY_COUNT ||
+                         nr == GAME_PANEL_TIME ? 1 : 2);
+         int size1 = (nr == GAME_PANEL_LEVEL_NUMBER ? 2 :
+                      nr == GAME_PANEL_INVENTORY_COUNT ||
+                      nr == GAME_PANEL_TIME ? 3 : 5);
+         int size2 = size1 + size_add;
          int font1 = pos->font;
          int font2 = pos->font_alt;
 
@@ -3542,7 +3563,6 @@ void InitGame(void)
   int fade_mask = REDRAW_FIELD;
 
   boolean emulate_bd = TRUE;   // unless non-BOULDERDASH elements found
-  boolean emulate_sb = TRUE;   // unless non-SOKOBAN     elements found
   boolean emulate_sp = TRUE;   // unless non-SUPAPLEX    elements found
   int initial_move_dir = MV_DOWN;
   int i, j, x, y;
@@ -3835,6 +3855,9 @@ void InitGame(void)
 
   game.envelope_active = FALSE;
 
+  // special case: set custom artwork setting to initial value
+  game.use_masked_elements = game.use_masked_elements_initial;
+
   for (i = 0; i < NUM_BELTS; i++)
   {
     game.belt_dir[i] = MV_NONE;
@@ -3876,7 +3899,9 @@ void InitGame(void)
 
     GfxFrame[x][y] = 0;
     GfxRandom[x][y] = INIT_GFX_RANDOM();
+    GfxRandomStatic[x][y] = INIT_GFX_RANDOM();
     GfxElement[x][y] = EL_UNDEFINED;
+    GfxElementEmpty[x][y] = EL_EMPTY;
     GfxAction[x][y] = ACTION_DEFAULT;
     GfxDir[x][y] = MV_NONE;
     GfxRedraw[x][y] = GFX_REDRAW_NONE;
@@ -3886,8 +3911,6 @@ void InitGame(void)
   {
     if (emulate_bd && !IS_BD_ELEMENT(Tile[x][y]))
       emulate_bd = FALSE;
-    if (emulate_sb && !IS_SB_ELEMENT(Tile[x][y]))
-      emulate_sb = FALSE;
     if (emulate_sp && !IS_SP_ELEMENT(Tile[x][y]))
       emulate_sp = FALSE;
 
@@ -3912,7 +3935,6 @@ void InitGame(void)
   }
 
   game.emulation = (emulate_bd ? EMU_BOULDERDASH :
-                   emulate_sb ? EMU_SOKOBAN :
                    emulate_sp ? EMU_SUPAPLEX : EMU_NONE);
 
   // initialize type of slippery elements
@@ -4310,7 +4332,7 @@ void InitGame(void)
        {
          // check for player created from custom element as single target
          content = element_info[element].change_page[i].target_element;
-         is_player = ELEM_IS_PLAYER(content);
+         is_player = IS_PLAYER_ELEMENT(content);
 
          if (is_player && (found_rating < 3 ||
                            (found_rating == 3 && element < found_element)))
@@ -4328,7 +4350,7 @@ void InitGame(void)
       {
        // check for player created from custom element as explosion content
        content = element_info[element].content.e[xx][yy];
-       is_player = ELEM_IS_PLAYER(content);
+       is_player = IS_PLAYER_ELEMENT(content);
 
        if (is_player && (found_rating < 2 ||
                          (found_rating == 2 && element < found_element)))
@@ -4349,7 +4371,7 @@ void InitGame(void)
          content =
            element_info[element].change_page[i].target_content.e[xx][yy];
 
-         is_player = ELEM_IS_PLAYER(content);
+         is_player = IS_PLAYER_ELEMENT(content);
 
          if (is_player && (found_rating < 1 ||
                            (found_rating == 1 && element < found_element)))
@@ -4480,6 +4502,8 @@ void InitGame(void)
     if (setup.sound_music)
       PlayLevelMusic();
   }
+
+  SetPlayfieldMouseCursorEnabled(!game.use_mouse_actions);
 }
 
 void UpdateEngineValues(int actual_scroll_x, int actual_scroll_y,
@@ -4700,6 +4724,40 @@ void InitAmoebaNr(int x, int y)
   AmoebaCnt2[group_nr]++;
 }
 
+static void LevelSolved_SetFinalGameValues(void)
+{
+  game.time_final = (game.no_time_limit ? TimePlayed : TimeLeft);
+  game.score_time_final = (level.use_step_counter ? TimePlayed :
+                          TimePlayed * FRAMES_PER_SECOND + TimeFrames);
+
+  game.score_final = (level.game_engine_type == GAME_ENGINE_TYPE_EM ?
+                     game_em.lev->score :
+                     level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+                     game_mm.score :
+                     game.score);
+
+  game.health_final = (level.game_engine_type == GAME_ENGINE_TYPE_MM ?
+                      MM_HEALTH(game_mm.laser_overload_value) :
+                      game.health);
+
+  game.LevelSolved_CountingTime = game.time_final;
+  game.LevelSolved_CountingScore = game.score_final;
+  game.LevelSolved_CountingHealth = game.health_final;
+}
+
+static void LevelSolved_DisplayFinalGameValues(int time, int score, int health)
+{
+  game.LevelSolved_CountingTime = time;
+  game.LevelSolved_CountingScore = score;
+  game.LevelSolved_CountingHealth = health;
+
+  game_panel_controls[GAME_PANEL_TIME].value = time;
+  game_panel_controls[GAME_PANEL_SCORE].value = score;
+  game_panel_controls[GAME_PANEL_HEALTH].value = health;
+
+  DisplayGameControlValues();
+}
+
 static void LevelSolved(void)
 {
   if (level.game_engine_type == GAME_ENGINE_TYPE_RND &&
@@ -4708,6 +4766,9 @@ static void LevelSolved(void)
 
   game.LevelSolved = TRUE;
   game.GameOver = TRUE;
+
+  // needed here to display correct panel values while player walks into exit
+  LevelSolved_SetFinalGameValues();
 }
 
 void GameWon(void)
@@ -4730,23 +4791,8 @@ void GameWon(void)
     if (local_player->active && local_player->MovPos)
       return;
 
-    game.time_final = (game.no_time_limit ? TimePlayed : TimeLeft);
-    game.score_time_final = (level.use_step_counter ? TimePlayed :
-                            TimePlayed * FRAMES_PER_SECOND + TimeFrames);
-
-    game.score_final = (level.game_engine_type == GAME_ENGINE_TYPE_EM ?
-                       game_em.lev->score :
-                       level.game_engine_type == GAME_ENGINE_TYPE_MM ?
-                       game_mm.score :
-                       game.score);
-
-    game.health_final = (level.game_engine_type == GAME_ENGINE_TYPE_MM ?
-                        MM_HEALTH(game_mm.laser_overload_value) :
-                        game.health);
-
-    game.LevelSolved_CountingTime = game.time_final;
-    game.LevelSolved_CountingScore = game.score_final;
-    game.LevelSolved_CountingHealth = game.health_final;
+    // calculate final game values after player finished walking into exit
+    LevelSolved_SetFinalGameValues();
 
     game.LevelSolved_GameWon = TRUE;
     game.LevelSolved_SaveTape = tape.recording;
@@ -4772,6 +4818,10 @@ void GameWon(void)
     score = score_final = game.score_final;
     health = health_final = game.health_final;
 
+    // update game panel values before (delayed) counting of score (if any)
+    LevelSolved_DisplayFinalGameValues(time, score, health);
+
+    // if level has time score defined, calculate new final game values
     if (time_score > 0)
     {
       int time_final_max = 999;
@@ -4805,18 +4855,13 @@ void GameWon(void)
       game.health_final = health_final;
     }
 
+    // if not counting score after game, immediately update game panel values
     if (level_editor_test_game || !setup.count_score_after_game)
     {
       time = time_final;
       score = score_final;
 
-      game.LevelSolved_CountingTime = time;
-      game.LevelSolved_CountingScore = score;
-
-      game_panel_controls[GAME_PANEL_TIME].value = time;
-      game_panel_controls[GAME_PANEL_SCORE].value = score;
-
-      DisplayGameControlValues();
+      LevelSolved_DisplayFinalGameValues(time, score, health);
     }
 
     if (level.game_engine_type == GAME_ENGINE_TYPE_RND)
@@ -4893,13 +4938,7 @@ void GameWon(void)
       if (time == time_final)
        score = score_final;
 
-      game.LevelSolved_CountingTime = time;
-      game.LevelSolved_CountingScore = score;
-
-      game_panel_controls[GAME_PANEL_TIME].value = time;
-      game_panel_controls[GAME_PANEL_SCORE].value = score;
-
-      DisplayGameControlValues();
+      LevelSolved_DisplayFinalGameValues(time, score, health);
 
       if (time == time_final)
        StopSound(SND_GAME_LEVELTIME_BONUS);
@@ -4925,13 +4964,7 @@ void GameWon(void)
       health += health_count_dir;
       score  += time_score;
 
-      game.LevelSolved_CountingHealth = health;
-      game.LevelSolved_CountingScore = score;
-
-      game_panel_controls[GAME_PANEL_HEALTH].value = health;
-      game_panel_controls[GAME_PANEL_SCORE].value = score;
-
-      DisplayGameControlValues();
+      LevelSolved_DisplayFinalGameValues(time, score, health);
 
       if (health == health_final)
        StopSound(SND_GAME_LEVELTIME_BONUS);
@@ -4960,17 +4993,18 @@ void GameEnd(void)
 {
   // used instead of "level_nr" (needed for network games)
   int last_level_nr = levelset.level_nr;
-  int highlight_position;
+  boolean tape_saved = FALSE;
 
   game.LevelSolved_GameEnd = TRUE;
 
-  if (game.LevelSolved_SaveTape)
+  if (game.LevelSolved_SaveTape && !score_info_tape_play)
   {
     // make sure that request dialog to save tape does not open door again
     if (!global.use_envelope_request)
       CloseDoor(DOOR_CLOSE_1);
 
-    SaveTapeChecked_LevelSolved(tape.level_nr);                // ask to save tape
+    // ask to save tape
+    tape_saved = SaveTapeChecked_LevelSolved(tape.level_nr);
 
     // set unique basename for score tape (also saved in high score table)
     strcpy(tape.score_tape_basename, getScoreTapeBasename(setup.player_name));
@@ -4979,7 +5013,7 @@ void GameEnd(void)
   // if no tape is to be saved, close both doors simultaneously
   CloseDoor(DOOR_CLOSE_ALL);
 
-  if (level_editor_test_game)
+  if (level_editor_test_game || score_info_tape_play)
   {
     SetGameStatus(GAME_MODE_MAIN);
 
@@ -5004,6 +5038,9 @@ void GameEnd(void)
     SaveLevelSetup_SeriesInfo();
   }
 
+  // save score and score tape before potentially erasing tape below
+  NewHighScore(last_level_nr, tape_saved);
+
   if (setup.increment_levels &&
       level_nr < leveldir_current->last_level &&
       !network_playing)
@@ -5013,23 +5050,22 @@ void GameEnd(void)
 
     if (setup.auto_play_next_level)
     {
+      scores.continue_playing = TRUE;
+      scores.next_level_nr = level_nr;
+
       LoadLevel(level_nr);
 
       SaveLevelSetup_SeriesInfo();
     }
   }
 
-  highlight_position = NewHighScore(last_level_nr);
-
-  if (highlight_position >= 0 && setup.show_scores_after_game)
+  if (scores.last_added >= 0 && setup.show_scores_after_game)
   {
     SetGameStatus(GAME_MODE_SCORES);
 
-    DrawHallOfFame(last_level_nr, highlight_position);
+    DrawHallOfFame(last_level_nr);
   }
-  else if (setup.auto_play_next_level && setup.increment_levels &&
-          last_level_nr < leveldir_current->last_level &&
-          !network_playing)
+  else if (scores.continue_playing)
   {
     StartGameActions(network.enabled, setup.autorecord, level.random_seed);
   }
@@ -5041,12 +5077,12 @@ void GameEnd(void)
   }
 }
 
-static int addScoreEntry(struct ScoreInfo *list, struct ScoreEntry *new_entry)
+static int addScoreEntry(struct ScoreInfo *list, struct ScoreEntry *new_entry,
+                        boolean one_score_entry_per_name)
 {
-  boolean one_score_entry_per_name = !program.many_scores_per_name;
   int i;
 
-  if (strEqual(setup.player_name, EMPTY_PLAYER_NAME))
+  if (strEqual(new_entry->name, EMPTY_PLAYER_NAME))
     return -1;
 
   for (i = 0; i < MAX_SCORE_ENTRIES; i++)
@@ -5065,6 +5101,19 @@ static int addScoreEntry(struct ScoreInfo *list, struct ScoreEntry *new_entry)
     boolean entry_is_empty = (entry->score == 0 &&
                              entry->time == 0);
 
+    // prevent adding server score entries if also existing in local score file
+    // (special case: historic score entries have an empty tape basename entry)
+    if (strEqual(new_entry->tape_basename, entry->tape_basename) &&
+       !strEqual(new_entry->tape_basename, UNDEFINED_FILENAME))
+    {
+      // special case: use server score instead of local score value if higher
+      // (historic scores might have been truncated to 16-bit values locally)
+      if (score_is_better)
+       entry->score = new_entry->score;
+
+      return -1;
+    }
+
     if (is_better || entry_is_empty)
     {
       // player has made it to the hall of fame
@@ -5077,7 +5126,7 @@ static int addScoreEntry(struct ScoreInfo *list, struct ScoreEntry *new_entry)
        if (one_score_entry_per_name)
        {
          for (l = i; l < MAX_SCORE_ENTRIES; l++)
-           if (strEqual(list->entry[l].name, setup.player_name))
+           if (strEqual(list->entry[l].name, new_entry->name))
              m = l;
 
          if (m == i)   // player's new highscore overwrites his old one
@@ -5095,7 +5144,7 @@ static int addScoreEntry(struct ScoreInfo *list, struct ScoreEntry *new_entry)
       return i;
     }
     else if (one_score_entry_per_name &&
-            strEqual(entry->name, setup.player_name))
+            strEqual(entry->name, new_entry->name))
     {
       // player already in high score list with better score or time
 
@@ -5103,12 +5152,14 @@ static int addScoreEntry(struct ScoreInfo *list, struct ScoreEntry *new_entry)
     }
   }
 
-  return -1;
+  // special case: new score is beyond the last high score list position
+  return MAX_SCORE_ENTRIES;
 }
 
-int NewHighScore(int level_nr)
+void NewHighScore(int level_nr, boolean tape_saved)
 {
   struct ScoreEntry new_entry = {{ 0 }}; // (prevent warning from GCC bug 53119)
+  boolean one_per_name = FALSE;
 
   strncpy(new_entry.tape_basename, tape.score_tape_basename, MAX_FILENAME_LEN);
   strncpy(new_entry.name, setup.player_name, MAX_PLAYER_NAME_LEN);
@@ -5118,17 +5169,78 @@ int NewHighScore(int level_nr)
 
   LoadScore(level_nr);
 
-  int position = addScoreEntry(&scores, &new_entry);
+  scores.last_added = addScoreEntry(&scores, &new_entry, one_per_name);
+
+  if (scores.last_added >= MAX_SCORE_ENTRIES)
+  {
+    scores.last_added = MAX_SCORE_ENTRIES - 1;
+    scores.force_last_added = TRUE;
+
+    scores.entry[scores.last_added] = new_entry;
+
+    // store last added local score entry (before merging server scores)
+    scores.last_added_local = scores.last_added;
+
+    return;
+  }
+
+  if (scores.last_added < 0)
+    return;
+
+  SaveScore(level_nr);
+
+  // store last added local score entry (before merging server scores)
+  scores.last_added_local = scores.last_added;
+
+  if (!game.LevelSolved_SaveTape)
+    return;
+
+  SaveScoreTape(level_nr);
 
-  if (position >= 0)
+  if (setup.ask_for_using_api_server)
   {
-    SaveScore(level_nr);
+    setup.use_api_server =
+      Request("Upload your score and tape to the high score server?", REQ_ASK);
 
-    if (game.LevelSolved_SaveTape)
-      SaveScoreTape(level_nr);
+    if (!setup.use_api_server)
+      Request("Not using high score server! Use setup menu to enable again!",
+             REQ_CONFIRM);
+
+    runtime.use_api_server = setup.use_api_server;
+
+    // after asking for using API server once, do not ask again
+    setup.ask_for_using_api_server = FALSE;
+
+    SaveSetup_ServerSetup();
   }
 
-  return position;
+  SaveServerScore(level_nr, tape_saved);
+}
+
+void MergeServerScore(void)
+{
+  struct ScoreEntry last_added_entry;
+  boolean one_per_name = FALSE;
+  int i;
+
+  if (scores.last_added >= 0)
+    last_added_entry = scores.entry[scores.last_added];
+
+  for (i = 0; i < server_scores.num_entries; i++)
+  {
+    int pos = addScoreEntry(&scores, &server_scores.entry[i], one_per_name);
+
+    if (pos >= 0 && pos <= scores.last_added)
+      scores.last_added++;
+  }
+
+  if (scores.last_added >= MAX_SCORE_ENTRIES)
+  {
+    scores.last_added = MAX_SCORE_ENTRIES - 1;
+    scores.force_last_added = TRUE;
+
+    scores.entry[scores.last_added] = last_added_entry;
+  }
 }
 
 static int getElementMoveStepsizeExt(int x, int y, int direction)
@@ -5408,7 +5520,7 @@ void DrawDynamite(int x, int y)
   else if (game.use_masked_elements)
     DrawLevelElement(x, y, EL_EMPTY);
 
-  frame = getGraphicAnimationFrame(graphic, GfxFrame[x][y]);
+  frame = getGraphicAnimationFrameXY(graphic, x, y);
 
   if (Back[x][y] || Store[x][y] || game.use_masked_elements)
     DrawGraphicThruMask(sx, sy, graphic, frame);
@@ -5651,7 +5763,7 @@ static void RelocatePlayer(int jx, int jy, int el_player_raw)
      possible that the relocation target field did not contain a player element,
      but a walkable element, to which the new player was relocated -- in this
      case, restore that (already initialized!) element on the player field */
-  if (!ELEM_IS_PLAYER(element))        // player may be set on walkable element
+  if (!IS_PLAYER_ELEMENT(element))     // player may be set on walkable element
   {
     Tile[jx][jy] = element;    // restore previously existing element
   }
@@ -5821,7 +5933,7 @@ static void Explode(int ex, int ey, int phase, int mode)
 
       // !!! check this case -- currently needed for rnd_rado_negundo_v,
       // !!! levels 015 018 019 020 021 022 023 026 027 028 !!!
-      else if (ELEM_IS_PLAYER(center_element))
+      else if (IS_PLAYER_ELEMENT(center_element))
        Store[x][y] = EL_EMPTY;
       else if (center_element == EL_YAMYAM)
        Store[x][y] = level.yamyam_content[game.yamyam_content_nr].e[xx][yy];
@@ -5913,6 +6025,10 @@ static void Explode(int ex, int ey, int phase, int mode)
       return;
   }
 
+  // this can happen if the player was just killed by an explosion
+  if (GfxElement[x][y] == EL_UNDEFINED)
+    GfxElement[x][y] = EL_EMPTY;
+
   if (phase == last_phase)
   {
     int element;
@@ -5961,13 +6077,13 @@ static void Explode(int ex, int ey, int phase, int mode)
     if (IS_PLAYER(x, y) && !PLAYERINFO(x, y)->present)
       StorePlayer[x][y] = 0;
 
-    if (ELEM_IS_PLAYER(element))
+    if (IS_PLAYER_ELEMENT(element))
       RelocatePlayer(x, y, element);
   }
   else if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
   {
     int graphic = el_act2img(GfxElement[x][y], ACTION_EXPLODING);
-    int frame = getGraphicAnimationFrame(graphic, GfxFrame[x][y]);
+    int frame = getGraphicAnimationFrameXY(graphic, x, y);
 
     if (phase == delay)
       TEST_DrawLevelFieldCrumbled(x, y);
@@ -5979,11 +6095,11 @@ static void Explode(int ex, int ey, int phase, int mode)
     }
     else if (IS_WALKABLE_UNDER(Back[x][y]))
     {
-      DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+      DrawLevelGraphic(x, y, graphic, frame);
       DrawLevelElementThruMask(x, y, Back[x][y]);
     }
     else if (!IS_WALKABLE_INSIDE(Back[x][y]))
-      DrawScreenGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+      DrawLevelGraphic(x, y, graphic, frame);
   }
 }
 
@@ -8156,7 +8272,7 @@ static void StartMoving(int x, int y)
                       dir == MV_RIGHT  ? IMG_FLAMES_1_RIGHT :
                       dir == MV_UP     ? IMG_FLAMES_1_UP :
                       dir == MV_DOWN   ? IMG_FLAMES_1_DOWN : IMG_EMPTY);
-       int frame = getGraphicAnimationFrame(graphic, GfxFrame[x][y]);
+       int frame = getGraphicAnimationFrameXY(graphic, x, y);
 
        GfxAction[x][y] = ACTION_ATTACKING;
 
@@ -8194,7 +8310,7 @@ static void StartMoving(int x, int y)
            if (IN_SCR_FIELD(sx, sy))
            {
              TEST_DrawLevelFieldCrumbled(xx, yy);
-             DrawGraphic(sx, sy, flame_graphic, frame);
+             DrawScreenGraphic(sx, sy, flame_graphic, frame);
            }
          }
          else
@@ -8343,6 +8459,9 @@ static void StartMoving(int x, int y)
          GfxDir[x][y] = diagonal_move_dir;
          ChangeDelay[x][y] = change_delay;
 
+         if (Store[x][y] == EL_EMPTY)
+           Store[x][y] = GfxElementEmpty[x][y];
+
          graphic = el_act_dir2img(GfxElement[x][y], GfxAction[x][y],
                                   GfxDir[x][y]);
 
@@ -8747,7 +8866,7 @@ void ContinueMoving(int x, int y)
     if (GFX_CRUMBLED(Tile[x][y]))
       TEST_DrawLevelFieldCrumbledNeighbours(x, y);
 
-    if (ELEM_IS_PLAYER(move_leave_element))
+    if (IS_PLAYER_ELEMENT(move_leave_element))
       RelocatePlayer(x, y, move_leave_element);
   }
 
@@ -9041,7 +9160,7 @@ static void AmoebaGrowing(int x, int y)
       int frame = getGraphicAnimationFrame(IMG_AMOEBA_GROWING,
                                           6 - MovDelay[x][y]);
 
-      DrawGraphic(SCREENX(x), SCREENY(y), IMG_AMOEBA_GROWING, frame);
+      DrawLevelGraphic(x, y, IMG_AMOEBA_GROWING, frame);
     }
 
     if (!MovDelay[x][y])
@@ -9074,7 +9193,7 @@ static void AmoebaShrinking(int x, int y)
       int frame = getGraphicAnimationFrame(IMG_AMOEBA_SHRINKING,
                                           6 - MovDelay[x][y]);
 
-      DrawGraphic(SCREENX(x), SCREENY(y), IMG_AMOEBA_SHRINKING, frame);
+      DrawLevelGraphic(x, y, IMG_AMOEBA_SHRINKING, frame);
     }
 
     if (!MovDelay[x][y])
@@ -9328,7 +9447,7 @@ static void Life(int ax, int ay)
          num_neighbours <= life_parameter[3])
       {
        Tile[xx][yy] = element;
-       MovDelay[xx][yy] = (element == EL_GAME_OF_LIFE ? 0 : life_time-1);
+       MovDelay[xx][yy] = (element == EL_GAME_OF_LIFE ? 0 : life_time - 1);
        if (Tile[xx][yy] != old_element)
          TEST_DrawLevelField(xx, yy);
        Stop[xx][yy] = TRUE;
@@ -9592,7 +9711,7 @@ static void MauerWaechst(int x, int y)
       int graphic = el_dir2img(Tile[x][y], GfxDir[x][y]);
       int frame = getGraphicAnimationFrame(graphic, 17 - MovDelay[x][y]);
 
-      DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+      DrawLevelGraphic(x, y, graphic, frame);
     }
 
     if (!MovDelay[x][y])
@@ -9649,13 +9768,13 @@ static void MauerAbleger(int ax, int ay)
       return;
   }
 
-  if (IN_LEV_FIELD(ax, ay-1) && IS_FREE(ax, ay-1))
+  if (IN_LEV_FIELD(ax, ay - 1) && IS_FREE(ax, ay - 1))
     oben_frei = TRUE;
-  if (IN_LEV_FIELD(ax, ay+1) && IS_FREE(ax, ay+1))
+  if (IN_LEV_FIELD(ax, ay + 1) && IS_FREE(ax, ay + 1))
     unten_frei = TRUE;
-  if (IN_LEV_FIELD(ax-1, ay) && IS_FREE(ax-1, ay))
+  if (IN_LEV_FIELD(ax - 1, ay) && IS_FREE(ax - 1, ay))
     links_frei = TRUE;
-  if (IN_LEV_FIELD(ax+1, ay) && IS_FREE(ax+1, ay))
+  if (IN_LEV_FIELD(ax + 1, ay) && IS_FREE(ax + 1, ay))
     rechts_frei = TRUE;
 
   if (element == EL_EXPANDABLE_WALL_VERTICAL ||
@@ -9663,22 +9782,20 @@ static void MauerAbleger(int ax, int ay)
   {
     if (oben_frei)
     {
-      Tile[ax][ay-1] = EL_EXPANDABLE_WALL_GROWING;
-      Store[ax][ay-1] = element;
-      GfxDir[ax][ay-1] = MovDir[ax][ay-1] = MV_UP;
-      if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay-1)))
-       DrawGraphic(SCREENX(ax), SCREENY(ay - 1),
-                   IMG_EXPANDABLE_WALL_GROWING_UP, 0);
+      Tile[ax][ay - 1] = EL_EXPANDABLE_WALL_GROWING;
+      Store[ax][ay - 1] = element;
+      GfxDir[ax][ay - 1] = MovDir[ax][ay - 1] = MV_UP;
+      if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay - 1)))
+       DrawLevelGraphic(ax, ay - 1, IMG_EXPANDABLE_WALL_GROWING_UP, 0);
       new_wall = TRUE;
     }
     if (unten_frei)
     {
-      Tile[ax][ay+1] = EL_EXPANDABLE_WALL_GROWING;
-      Store[ax][ay+1] = element;
-      GfxDir[ax][ay+1] = MovDir[ax][ay+1] = MV_DOWN;
-      if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay+1)))
-       DrawGraphic(SCREENX(ax), SCREENY(ay + 1),
-                   IMG_EXPANDABLE_WALL_GROWING_DOWN, 0);
+      Tile[ax][ay + 1] = EL_EXPANDABLE_WALL_GROWING;
+      Store[ax][ay + 1] = element;
+      GfxDir[ax][ay + 1] = MovDir[ax][ay + 1] = MV_DOWN;
+      if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay + 1)))
+       DrawLevelGraphic(ax, ay + 1, IMG_EXPANDABLE_WALL_GROWING_DOWN, 0);
       new_wall = TRUE;
     }
   }
@@ -9690,23 +9807,21 @@ static void MauerAbleger(int ax, int ay)
   {
     if (links_frei)
     {
-      Tile[ax-1][ay] = EL_EXPANDABLE_WALL_GROWING;
-      Store[ax-1][ay] = element;
-      GfxDir[ax-1][ay] = MovDir[ax-1][ay] = MV_LEFT;
-      if (IN_SCR_FIELD(SCREENX(ax-1), SCREENY(ay)))
-       DrawGraphic(SCREENX(ax - 1), SCREENY(ay),
-                   IMG_EXPANDABLE_WALL_GROWING_LEFT, 0);
+      Tile[ax - 1][ay] = EL_EXPANDABLE_WALL_GROWING;
+      Store[ax - 1][ay] = element;
+      GfxDir[ax - 1][ay] = MovDir[ax - 1][ay] = MV_LEFT;
+      if (IN_SCR_FIELD(SCREENX(ax - 1), SCREENY(ay)))
+       DrawLevelGraphic(ax - 1, ay, IMG_EXPANDABLE_WALL_GROWING_LEFT, 0);
       new_wall = TRUE;
     }
 
     if (rechts_frei)
     {
-      Tile[ax+1][ay] = EL_EXPANDABLE_WALL_GROWING;
-      Store[ax+1][ay] = element;
-      GfxDir[ax+1][ay] = MovDir[ax+1][ay] = MV_RIGHT;
-      if (IN_SCR_FIELD(SCREENX(ax+1), SCREENY(ay)))
-       DrawGraphic(SCREENX(ax + 1), SCREENY(ay),
-                   IMG_EXPANDABLE_WALL_GROWING_RIGHT, 0);
+      Tile[ax + 1][ay] = EL_EXPANDABLE_WALL_GROWING;
+      Store[ax + 1][ay] = element;
+      GfxDir[ax + 1][ay] = MovDir[ax + 1][ay] = MV_RIGHT;
+      if (IN_SCR_FIELD(SCREENX(ax + 1), SCREENY(ay)))
+       DrawLevelGraphic(ax + 1, ay, IMG_EXPANDABLE_WALL_GROWING_RIGHT, 0);
       new_wall = TRUE;
     }
   }
@@ -9714,13 +9829,13 @@ static void MauerAbleger(int ax, int ay)
   if (element == EL_EXPANDABLE_WALL && (links_frei || rechts_frei))
     TEST_DrawLevelField(ax, ay);
 
-  if (!IN_LEV_FIELD(ax, ay-1) || IS_WALL(Tile[ax][ay-1]))
+  if (!IN_LEV_FIELD(ax, ay - 1) || IS_WALL(Tile[ax][ay - 1]))
     oben_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax, ay+1) || IS_WALL(Tile[ax][ay+1]))
+  if (!IN_LEV_FIELD(ax, ay + 1) || IS_WALL(Tile[ax][ay + 1]))
     unten_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax-1, ay) || IS_WALL(Tile[ax-1][ay]))
+  if (!IN_LEV_FIELD(ax - 1, ay) || IS_WALL(Tile[ax - 1][ay]))
     links_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax+1, ay) || IS_WALL(Tile[ax+1][ay]))
+  if (!IN_LEV_FIELD(ax + 1, ay) || IS_WALL(Tile[ax + 1][ay]))
     rechts_massiv = TRUE;
 
   if (((oben_massiv && unten_massiv) ||
@@ -9757,13 +9872,13 @@ static void MauerAblegerStahl(int ax, int ay)
       return;
   }
 
-  if (IN_LEV_FIELD(ax, ay-1) && IS_FREE(ax, ay-1))
+  if (IN_LEV_FIELD(ax, ay - 1) && IS_FREE(ax, ay - 1))
     oben_frei = TRUE;
-  if (IN_LEV_FIELD(ax, ay+1) && IS_FREE(ax, ay+1))
+  if (IN_LEV_FIELD(ax, ay + 1) && IS_FREE(ax, ay + 1))
     unten_frei = TRUE;
-  if (IN_LEV_FIELD(ax-1, ay) && IS_FREE(ax-1, ay))
+  if (IN_LEV_FIELD(ax - 1, ay) && IS_FREE(ax - 1, ay))
     links_frei = TRUE;
-  if (IN_LEV_FIELD(ax+1, ay) && IS_FREE(ax+1, ay))
+  if (IN_LEV_FIELD(ax + 1, ay) && IS_FREE(ax + 1, ay))
     rechts_frei = TRUE;
 
   if (element == EL_EXPANDABLE_STEELWALL_VERTICAL ||
@@ -9771,22 +9886,20 @@ static void MauerAblegerStahl(int ax, int ay)
   {
     if (oben_frei)
     {
-      Tile[ax][ay-1] = EL_EXPANDABLE_STEELWALL_GROWING;
-      Store[ax][ay-1] = element;
-      GfxDir[ax][ay-1] = MovDir[ax][ay-1] = MV_UP;
-      if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay-1)))
-       DrawGraphic(SCREENX(ax), SCREENY(ay - 1),
-                   IMG_EXPANDABLE_STEELWALL_GROWING_UP, 0);
+      Tile[ax][ay - 1] = EL_EXPANDABLE_STEELWALL_GROWING;
+      Store[ax][ay - 1] = element;
+      GfxDir[ax][ay - 1] = MovDir[ax][ay - 1] = MV_UP;
+      if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay - 1)))
+       DrawLevelGraphic(ax, ay - 1, IMG_EXPANDABLE_STEELWALL_GROWING_UP, 0);
       new_wall = TRUE;
     }
     if (unten_frei)
     {
-      Tile[ax][ay+1] = EL_EXPANDABLE_STEELWALL_GROWING;
-      Store[ax][ay+1] = element;
-      GfxDir[ax][ay+1] = MovDir[ax][ay+1] = MV_DOWN;
-      if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay+1)))
-       DrawGraphic(SCREENX(ax), SCREENY(ay + 1),
-                   IMG_EXPANDABLE_STEELWALL_GROWING_DOWN, 0);
+      Tile[ax][ay + 1] = EL_EXPANDABLE_STEELWALL_GROWING;
+      Store[ax][ay + 1] = element;
+      GfxDir[ax][ay + 1] = MovDir[ax][ay + 1] = MV_DOWN;
+      if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay + 1)))
+       DrawLevelGraphic(ax, ay + 1, IMG_EXPANDABLE_STEELWALL_GROWING_DOWN, 0);
       new_wall = TRUE;
     }
   }
@@ -9796,34 +9909,32 @@ static void MauerAblegerStahl(int ax, int ay)
   {
     if (links_frei)
     {
-      Tile[ax-1][ay] = EL_EXPANDABLE_STEELWALL_GROWING;
-      Store[ax-1][ay] = element;
-      GfxDir[ax-1][ay] = MovDir[ax-1][ay] = MV_LEFT;
-      if (IN_SCR_FIELD(SCREENX(ax-1), SCREENY(ay)))
-       DrawGraphic(SCREENX(ax - 1), SCREENY(ay),
-                   IMG_EXPANDABLE_STEELWALL_GROWING_LEFT, 0);
+      Tile[ax - 1][ay] = EL_EXPANDABLE_STEELWALL_GROWING;
+      Store[ax - 1][ay] = element;
+      GfxDir[ax - 1][ay] = MovDir[ax - 1][ay] = MV_LEFT;
+      if (IN_SCR_FIELD(SCREENX(ax - 1), SCREENY(ay)))
+       DrawLevelGraphic(ax - 1, ay, IMG_EXPANDABLE_STEELWALL_GROWING_LEFT, 0);
       new_wall = TRUE;
     }
 
     if (rechts_frei)
     {
-      Tile[ax+1][ay] = EL_EXPANDABLE_STEELWALL_GROWING;
-      Store[ax+1][ay] = element;
-      GfxDir[ax+1][ay] = MovDir[ax+1][ay] = MV_RIGHT;
-      if (IN_SCR_FIELD(SCREENX(ax+1), SCREENY(ay)))
-       DrawGraphic(SCREENX(ax + 1), SCREENY(ay),
-                   IMG_EXPANDABLE_STEELWALL_GROWING_RIGHT, 0);
+      Tile[ax + 1][ay] = EL_EXPANDABLE_STEELWALL_GROWING;
+      Store[ax + 1][ay] = element;
+      GfxDir[ax + 1][ay] = MovDir[ax + 1][ay] = MV_RIGHT;
+      if (IN_SCR_FIELD(SCREENX(ax + 1), SCREENY(ay)))
+       DrawLevelGraphic(ax + 1, ay, IMG_EXPANDABLE_STEELWALL_GROWING_RIGHT, 0);
       new_wall = TRUE;
     }
   }
 
-  if (!IN_LEV_FIELD(ax, ay-1) || IS_WALL(Tile[ax][ay-1]))
+  if (!IN_LEV_FIELD(ax, ay - 1) || IS_WALL(Tile[ax][ay - 1]))
     oben_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax, ay+1) || IS_WALL(Tile[ax][ay+1]))
+  if (!IN_LEV_FIELD(ax, ay + 1) || IS_WALL(Tile[ax][ay + 1]))
     unten_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax-1, ay) || IS_WALL(Tile[ax-1][ay]))
+  if (!IN_LEV_FIELD(ax - 1, ay) || IS_WALL(Tile[ax - 1][ay]))
     links_massiv = TRUE;
-  if (!IN_LEV_FIELD(ax+1, ay) || IS_WALL(Tile[ax+1][ay]))
+  if (!IN_LEV_FIELD(ax + 1, ay) || IS_WALL(Tile[ax + 1][ay]))
     rechts_massiv = TRUE;
 
   if (((oben_massiv && unten_massiv) ||
@@ -10557,7 +10668,7 @@ static void CreateFieldExt(int x, int y, int element, boolean is_change)
   int previous_move_direction = MovDir[x][y];
   int last_ce_value = CustomValue[x][y];
   boolean player_explosion_protected = PLAYER_EXPLOSION_PROTECTED(x, y);
-  boolean new_element_is_player = ELEM_IS_PLAYER(new_element);
+  boolean new_element_is_player = IS_PLAYER_ELEMENT(new_element);
   boolean add_player_onto_element = (new_element_is_player &&
                                     new_element != EL_SOKOBAN_FIELD_PLAYER &&
                                     IS_WALKABLE(old_element));
@@ -10733,7 +10844,7 @@ static boolean ChangeElement(int x, int y, int element, int page)
          (change->replace_when == CP_WHEN_COLLECTIBLE  && is_collectible) ||
          (change->replace_when == CP_WHEN_REMOVABLE    && is_removable) ||
          (change->replace_when == CP_WHEN_DESTRUCTIBLE && is_destructible)) &&
-        !(IS_PLAYER(ex, ey) && ELEM_IS_PLAYER(content_element)));
+        !(IS_PLAYER(ex, ey) && IS_PLAYER_ELEMENT(content_element)));
 
       if (!can_replace[xx][yy])
        complete_replace = FALSE;
@@ -10795,6 +10906,10 @@ static boolean ChangeElement(int x, int y, int element, int page)
       Store[x][y] = EL_EMPTY;
     }
 
+    // special case: element changes to player (and may be kept if walkable)
+    if (IS_PLAYER_ELEMENT(target_element) && !level.keep_walkable_ce)
+      CreateElementFromChange(x, y, EL_EMPTY);
+
     CreateElementFromChange(x, y, target_element);
 
     PlayLevelSoundElementAction(x, y, element, ACTION_CHANGING);
@@ -11084,7 +11199,8 @@ static boolean CheckElementChangeExt(int x, int y,
        different to element changes that affect other elements to change on the
        whole playfield (which is handeld by CheckTriggeredElementChangeExt()) */
     boolean check_trigger_element =
-      (trigger_event == CE_TOUCHING_X ||
+      (trigger_event == CE_NEXT_TO_X ||
+       trigger_event == CE_TOUCHING_X ||
        trigger_event == CE_HITTING_X ||
        trigger_event == CE_HIT_BY_X ||
        trigger_event == CE_DIGGING_X); // this one was forgotten until 3.2.3
@@ -11511,6 +11627,35 @@ static void CheckLevelSolved(void)
   }
 }
 
+static void CheckLevelTime_StepCounter(void)
+{
+  int i;
+
+  TimePlayed++;
+
+  if (TimeLeft > 0)
+  {
+    TimeLeft--;
+
+    if (TimeLeft <= 10 && setup.time_limit && !game.LevelSolved)
+      PlaySound(SND_GAME_RUNNING_OUT_OF_TIME);
+
+    game_panel_controls[GAME_PANEL_TIME].value = TimeLeft;
+
+    DisplayGameControlValues();
+
+    if (!TimeLeft && setup.time_limit && !game.LevelSolved)
+      for (i = 0; i < MAX_PLAYERS; i++)
+       KillPlayer(&stored_player[i]);
+  }
+  else if (game.no_time_limit && !game.all_players_gone)
+  {
+    game_panel_controls[GAME_PANEL_TIME].value = TimePlayed;
+
+    DisplayGameControlValues();
+  }
+}
+
 static void CheckLevelTime(void)
 {
   int i;
@@ -11633,6 +11778,9 @@ void StartGameActions(boolean init_network_game, boolean record_tape,
   if (record_tape)
     TapeStartRecording(new_random_seed);
 
+  if (setup.auto_pause_on_start && !tape.pausing)
+    TapeTogglePause(TAPE_TOGGLE_MANUAL);
+
   if (init_network_game)
   {
     SendToServer_LevelFile();
@@ -11665,7 +11813,7 @@ static void GameActionsExt(void)
     Warn("element '%s' caused endless loop in game engine",
         EL_NAME(recursion_loop_element));
 
-    RequestQuitGameExt(FALSE, level_editor_test_game, message);
+    RequestQuitGameExt(program.headless, level_editor_test_game, message);
 
     recursion_loop_detected = FALSE;   // if game should be continued
 
@@ -12136,6 +12284,9 @@ void GameActions_RND(void)
        TEST_DrawLevelField(x, y);
 
        TestFieldAfterSnapping(x, y, element, move_direction, player_index_bit);
+
+       if (IS_ENVELOPE(element))
+         local_player->show_envelope = element;
       }
     }
 
@@ -12206,6 +12357,25 @@ void GameActions_RND(void)
     CheckElementChangeByMouse(x, y, element, CE_PRESSED_BY_MOUSE, ch_button);
     CheckTriggeredElementChangeByMouse(x, y, element, CE_MOUSE_PRESSED_ON_X,
                                       ch_button);
+
+    if (level.use_step_counter)
+    {
+      boolean counted_click = FALSE;
+
+      // element clicked that can change when clicked/pressed
+      if (CAN_CHANGE_OR_HAS_ACTION(element) &&
+         (HAS_ANY_CHANGE_EVENT(element, CE_CLICKED_BY_MOUSE) ||
+          HAS_ANY_CHANGE_EVENT(element, CE_PRESSED_BY_MOUSE)))
+       counted_click = TRUE;
+
+      // element clicked that can trigger change when clicked/pressed
+      if (trigger_events[element][CE_MOUSE_CLICKED_ON_X] ||
+         trigger_events[element][CE_MOUSE_PRESSED_ON_X])
+       counted_click = TRUE;
+
+      if (new_button && counted_click)
+       CheckLevelTime_StepCounter();
+    }
   }
 
   SCAN_PLAYFIELD(x, y)
@@ -12214,6 +12384,9 @@ void GameActions_RND(void)
     graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
     last_gfx_frame = GfxFrame[x][y];
 
+    if (element == EL_EMPTY)
+      graphic = el2img(GfxElementEmpty[x][y]);
+
     ResetGfxFrame(x, y);
 
     if (GfxFrame[x][y] != last_gfx_frame && !Stop[x][y])
@@ -12247,6 +12420,8 @@ void GameActions_RND(void)
       graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
     }
 
+    CheckNextToConditions(x, y);
+
     if (!IS_MOVING(x, y) && (CAN_FALL(element) || CAN_MOVE(element)))
     {
       StartMoving(x, y);
@@ -12379,10 +12554,10 @@ void GameActions_RND(void)
           element == EL_ACID_SPLASH_LEFT ||
           element == EL_ACID_SPLASH_RIGHT))
       {
-       if ((IN_LEV_FIELD(x, y-1) && Tile[x][y-1] == EL_AMOEBA_WET) ||
-           (IN_LEV_FIELD(x-1, y) && Tile[x-1][y] == EL_AMOEBA_WET) ||
-           (IN_LEV_FIELD(x+1, y) && Tile[x+1][y] == EL_AMOEBA_WET) ||
-           (IN_LEV_FIELD(x, y+1) && Tile[x][y+1] == EL_AMOEBA_WET))
+       if ((IN_LEV_FIELD(x, y - 1) && Tile[x][y - 1] == EL_AMOEBA_WET) ||
+           (IN_LEV_FIELD(x - 1, y) && Tile[x - 1][y] == EL_AMOEBA_WET) ||
+           (IN_LEV_FIELD(x + 1, y) && Tile[x + 1][y] == EL_AMOEBA_WET) ||
+           (IN_LEV_FIELD(x, y + 1) && Tile[x][y + 1] == EL_AMOEBA_WET))
          Tile[x][y] = EL_AMOEBA_DROP;
       }
 
@@ -13078,9 +13253,6 @@ void ScrollPlayer(struct PlayerInfo *player, int mode)
       }
     }
 
-    player->last_jx = jx;
-    player->last_jy = jy;
-
     if (Tile[jx][jy] == EL_EXIT_OPEN ||
        Tile[jx][jy] == EL_EM_EXIT_OPEN ||
        Tile[jx][jy] == EL_EM_EXIT_OPENING ||
@@ -13098,6 +13270,9 @@ void ScrollPlayer(struct PlayerInfo *player, int mode)
        LevelSolved();
     }
 
+    player->last_jx = jx;
+    player->last_jy = jy;
+
     // this breaks one level: "machine", level 000
     {
       int move_direction = player->MovDir;
@@ -13159,33 +13334,7 @@ void ScrollPlayer(struct PlayerInfo *player, int mode)
     }
 
     if (level.use_step_counter)
-    {
-      int i;
-
-      TimePlayed++;
-
-      if (TimeLeft > 0)
-      {
-       TimeLeft--;
-
-       if (TimeLeft <= 10 && setup.time_limit && !game.LevelSolved)
-         PlaySound(SND_GAME_RUNNING_OUT_OF_TIME);
-
-       game_panel_controls[GAME_PANEL_TIME].value = TimeLeft;
-
-       DisplayGameControlValues();
-
-       if (!TimeLeft && setup.time_limit && !game.LevelSolved)
-         for (i = 0; i < MAX_PLAYERS; i++)
-           KillPlayer(&stored_player[i]);
-      }
-      else if (game.no_time_limit && !game.all_players_gone)
-      {
-       game_panel_controls[GAME_PANEL_TIME].value = TimePlayed;
-
-       DisplayGameControlValues();
-      }
-    }
+      CheckLevelTime_StepCounter();
 
     if (tape.single_step && tape.recording && !tape.pausing &&
        !player->programmed_action)
@@ -13224,6 +13373,76 @@ void ScrollScreen(struct PlayerInfo *player, int mode)
     ScreenMovDir = MV_NONE;
 }
 
+void CheckNextToConditions(int x, int y)
+{
+  int element = Tile[x][y];
+
+  if (IS_PLAYER(x, y))
+    TestIfPlayerNextToCustomElement(x, y);
+
+  if (CAN_CHANGE_OR_HAS_ACTION(element) &&
+      HAS_ANY_CHANGE_EVENT(element, CE_NEXT_TO_X))
+    TestIfElementNextToCustomElement(x, y);
+}
+
+void TestIfPlayerNextToCustomElement(int x, int y)
+{
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+  static int trigger_sides[4][2] =
+  {
+    // center side       border side
+    { CH_SIDE_TOP,     CH_SIDE_BOTTOM  },      // check top
+    { CH_SIDE_LEFT,    CH_SIDE_RIGHT   },      // check left
+    { CH_SIDE_RIGHT,   CH_SIDE_LEFT    },      // check right
+    { CH_SIDE_BOTTOM,  CH_SIDE_TOP     }       // check bottom
+  };
+  int i;
+
+  if (!IS_PLAYER(x, y))
+    return;
+
+  struct PlayerInfo *player = PLAYERINFO(x, y);
+
+  if (player->is_moving)
+    return;
+
+  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;
+
+    if (!IN_LEV_FIELD(xx, yy))
+      continue;
+
+    if (IS_MOVING(xx, yy) || IS_BLOCKED(xx, yy))
+      continue;                // center and border element not connected
+
+    border_element = Tile[xx][yy];
+
+    CheckElementChangeByPlayer(xx, yy, border_element, CE_NEXT_TO_PLAYER,
+                               player->index_bit, border_side);
+    CheckTriggeredElementChangeByPlayer(xx, yy, border_element,
+                                        CE_PLAYER_NEXT_TO_X,
+                                        player->index_bit, border_side);
+
+    /* 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") */
+
+    CheckElementChangeBySide(xx, yy, border_element, player->initial_element,
+                             CE_NEXT_TO_X, border_side);
+  }
+}
+
 void TestIfPlayerTouchesCustomElement(int x, int y)
 {
   static int xy[4][2] =
@@ -13324,6 +13543,51 @@ void TestIfPlayerTouchesCustomElement(int x, int y)
   }
 }
 
+void TestIfElementNextToCustomElement(int x, int y)
+{
+  static int xy[4][2] =
+  {
+    { 0, -1 },
+    { -1, 0 },
+    { +1, 0 },
+    { 0, +1 }
+  };
+  static int trigger_sides[4][2] =
+  {
+    // center side     border side
+    { CH_SIDE_TOP,     CH_SIDE_BOTTOM  },      // check top
+    { CH_SIDE_LEFT,    CH_SIDE_RIGHT   },      // check left
+    { CH_SIDE_RIGHT,   CH_SIDE_LEFT    },      // check right
+    { CH_SIDE_BOTTOM,  CH_SIDE_TOP     }       // check bottom
+  };
+  int center_element = Tile[x][y];     // should always be non-moving!
+  int i;
+
+  if (IS_MOVING(x, y) || IS_BLOCKED(x, y))
+    return;
+
+  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;
+
+    if (!IN_LEV_FIELD(xx, yy))
+      continue;
+
+    if (IS_MOVING(xx, yy) || IS_BLOCKED(xx, yy))
+      continue;                        // center and border element not connected
+
+    border_element = Tile[xx][yy];
+
+    // check for change of center element (but change it only once)
+    if (CheckElementChangeBySide(x, y, center_element, border_element,
+                                 CE_NEXT_TO_X, border_side))
+      break;
+  }
+}
+
 void TestIfElementTouchesCustomElement(int x, int y)
 {
   static int xy[4][2] =
@@ -13919,7 +14183,11 @@ static void TestFieldAfterSnapping(int x, int y, int element, int direction,
   if (level.finish_dig_collect)
   {
     int dig_side = MV_DIR_OPPOSITE(direction);
+    int change_event = (IS_DIGGABLE(element) ? CE_PLAYER_DIGS_X :
+                       CE_PLAYER_COLLECTS_X);
 
+    CheckTriggeredElementChangeByPlayer(x, y, element, change_event,
+                                       player_index_bit, dig_side);
     CheckTriggeredElementChangeByPlayer(x, y, element, CE_PLAYER_SNAPS_X,
                                        player_index_bit, dig_side);
   }
@@ -14002,7 +14270,6 @@ static int DigField(struct PlayerInfo *player,
       return MP_NO_ACTION;
     }
   }
-
   if (IS_TUBE(Back[jx][jy]) && game.engine_version >= VERSION_IDENT(2,2,0,0))
     old_element = Back[jx][jy];
 
@@ -14293,7 +14560,10 @@ static int DigField(struct PlayerInfo *player,
     }
     else if (IS_ENVELOPE(element))
     {
-      player->show_envelope = element;
+      boolean wait_for_snapping = (mode == DF_SNAP && level.block_snap_field);
+
+      if (!wait_for_snapping)
+       player->show_envelope = element;
     }
     else if (element == EL_EMC_LENSES)
     {
@@ -14480,7 +14750,7 @@ static int DigField(struct PlayerInfo *player,
       if (sokoban_task_solved &&
          game.sokoban_fields_still_needed == 0 &&
          game.sokoban_objects_still_needed == 0 &&
-         (game.emulation == EMU_SOKOBAN || level.auto_exit_sokoban))
+         level.auto_exit_sokoban)
       {
        game.players_still_needed = 0;
 
@@ -15422,9 +15692,10 @@ void RequestQuitGameExt(boolean skip_request, boolean quick_quit, char *message)
     {
       // prevent short reactivation of overlay buttons while closing door
       SetOverlayActive(FALSE);
+      UnmapGameButtons();
 
       // door may still be open due to skipped or envelope style request
-      CloseDoor(DOOR_CLOSE_1);
+      CloseDoor(score_info_tape_play ? DOOR_CLOSE_ALL : DOOR_CLOSE_1);
     }
 
     if (network.enabled)
@@ -15457,7 +15728,7 @@ void RequestQuitGame(boolean escape_key_pressed)
   boolean quick_quit = ((escape_key_pressed && !ask_on_escape) ||
                        level_editor_test_game);
   boolean skip_request = (game.all_players_gone || !setup.ask_on_quit_game ||
-                         quick_quit);
+                         quick_quit || score_info_tape_play);
 
   RequestQuitGameExt(skip_request, quick_quit,
                     "Do you really want to quit the game?");
@@ -15769,6 +16040,7 @@ static ListNode *SaveEngineSnapshotBuffers(void)
 
   SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(GfxFrame));
   SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(GfxRandom));
+  SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(GfxRandomStatic));
   SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(GfxElement));
   SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(GfxAction));
   SaveSnapshotBuffer(&buffers, ARGS_ADDRESS_AND_SIZEOF(GfxDir));
@@ -16028,6 +16300,10 @@ void CreateGameButtons(void)
     int y = (is_touch_button ? pos->y : GDI_ACTIVE_POS(pos->y));
     int id = i;
 
+    // do not use touch buttons if overlay touch buttons are disabled
+    if (is_touch_button && !setup.touch.overlay_buttons)
+      continue;
+
     if (gfx->bitmap == NULL)
     {
       game_gadget[id] = NULL;
@@ -16110,12 +16386,18 @@ static void UnmapGameButtonsAtSamePosition(int id)
 
 static void UnmapGameButtonsAtSamePosition_All(void)
 {
-  if (setup.show_snapshot_buttons)
+  if (setup.show_load_save_buttons)
   {
     UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_SAVE);
     UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PAUSE2);
     UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_LOAD);
   }
+  else if (setup.show_undo_redo_buttons)
+  {
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_UNDO);
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_PAUSE2);
+    UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_REDO);
+  }
   else
   {
     UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_STOP);
@@ -16128,17 +16410,13 @@ static void UnmapGameButtonsAtSamePosition_All(void)
   }
 }
 
-static void MapGameButtonsAtSamePosition(int id)
+void MapLoadSaveButtons(void)
 {
-  int i;
-
-  for (i = 0; i < NUM_GAME_BUTTONS; i++)
-    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]);
+  UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_LOAD);
+  UnmapGameButtonsAtSamePosition(GAME_CTRL_ID_SAVE);
 
-  UnmapGameButtonsAtSamePosition_All();
+  MapGadget(game_gadget[GAME_CTRL_ID_LOAD]);
+  MapGadget(game_gadget[GAME_CTRL_ID_SAVE]);
 }
 
 void MapUndoRedoButtons(void)
@@ -16150,15 +16428,6 @@ void MapUndoRedoButtons(void)
   MapGadget(game_gadget[GAME_CTRL_ID_REDO]);
 }
 
-void UnmapUndoRedoButtons(void)
-{
-  UnmapGadget(game_gadget[GAME_CTRL_ID_UNDO]);
-  UnmapGadget(game_gadget[GAME_CTRL_ID_REDO]);
-
-  MapGameButtonsAtSamePosition(GAME_CTRL_ID_UNDO);
-  MapGameButtonsAtSamePosition(GAME_CTRL_ID_REDO);
-}
-
 void ModifyPauseButtons(void)
 {
   static int ids[] =
@@ -16180,10 +16449,15 @@ static void MapGameButtonsExt(boolean on_tape)
   int i;
 
   for (i = 0; i < NUM_GAME_BUTTONS; i++)
-    if ((!on_tape || gamebutton_info[i].allowed_on_tape) &&
-       i != GAME_CTRL_ID_UNDO &&
-       i != GAME_CTRL_ID_REDO)
+  {
+    if ((i == GAME_CTRL_ID_UNDO ||
+        i == GAME_CTRL_ID_REDO) &&
+       game_status != GAME_MODE_PLAYING)
+      continue;
+
+    if (!on_tape || gamebutton_info[i].allowed_on_tape)
       MapGadget(game_gadget[i]);
+  }
 
   UnmapGameButtonsAtSamePosition_All();
 
@@ -16274,6 +16548,8 @@ static void GameUndoRedoExt(void)
   DrawVideoDisplay(VIDEO_STATE_FRAME_ON, FrameCounter);
   DrawVideoDisplay(VIDEO_STATE_1STEP(tape.single_step), 0);
 
+  ModifyPauseButtons();
+
   BackToFront();
 }
 
@@ -16282,8 +16558,12 @@ static void GameUndo(int steps)
   if (!CheckEngineSnapshotList())
     return;
 
+  int tape_property_bits = tape.property_bits;
+
   LoadEngineSnapshot_Undo(steps);
 
+  tape.property_bits |= tape_property_bits | TAPE_PROPERTY_SNAPSHOT;
+
   GameUndoRedoExt();
 }
 
@@ -16292,8 +16572,12 @@ static void GameRedo(int steps)
   if (!CheckEngineSnapshotList())
     return;
 
+  int tape_property_bits = tape.property_bits;
+
   LoadEngineSnapshot_Redo(steps);
 
+  tape.property_bits |= tape_property_bits | TAPE_PROPERTY_SNAPSHOT;
+
   GameUndoRedoExt();
 }
 
@@ -16313,13 +16597,7 @@ static void HandleGameButtonsExt(int id, int button)
     case GAME_CTRL_ID_STOP:
     case GAME_CTRL_ID_PANEL_STOP:
     case GAME_CTRL_ID_TOUCH_STOP:
-      if (game_status == GAME_MODE_MAIN)
-       break;
-
-      if (tape.playing)
-       TapeStop();
-      else
-       RequestQuitGame(FALSE);
+      TapeStopGame();
 
       break;