+#if 1
+ if (IS_EXPLOSION_PROOF(element))
+ continue;
+#else
+ if ((IS_INDESTRUCTIBLE(element) &&
+ (game.engine_version < VERSION_IDENT(2,2,0) ||
+ (!IS_WALKABLE_OVER(element) && !IS_WALKABLE_UNDER(element)))) ||
+ element == EL_FLAMES)
+ continue;
+#endif
+
+ if (IS_PLAYER(x, y) && SHIELD_ON(PLAYERINFO(x, y)))
+ {
+ if (IS_ACTIVE_BOMB(element))
+ {
+ /* re-activate things under the bomb like gate or penguin */
+ Feld[x][y] = (Store[x][y] ? Store[x][y] : EL_EMPTY);
+ Store[x][y] = 0;
+ }
+
+ continue;
+ }
+
+ /* save walkable background elements while explosion on same tile */
+ if (IS_INDESTRUCTIBLE(element))
+ Back[x][y] = element;
+
+ /* ignite explodable elements reached by other explosion */
+ if (element == EL_EXPLOSION)
+ element = Store2[x][y];
+
+ if (IS_PLAYER(ex, ey) && !PLAYER_PROTECTED(ex, ey))
+ {
+ switch(StorePlayer[ex][ey])
+ {
+ case EL_PLAYER_2:
+ Store[x][y] = EL_EMERALD_RED;
+ break;
+ case EL_PLAYER_3:
+ Store[x][y] = EL_EMERALD;
+ break;
+ case EL_PLAYER_4:
+ Store[x][y] = EL_EMERALD_PURPLE;
+ break;
+ case EL_PLAYER_1:
+ default:
+ Store[x][y] = EL_EMERALD_YELLOW;
+ break;
+ }
+
+ if (game.emulation == EMU_SUPAPLEX)
+ Store[x][y] = EL_EMPTY;
+ }
+ else if (center_element == EL_MOLE)
+ Store[x][y] = EL_EMERALD_RED;
+ else if (center_element == EL_PENGUIN)
+ Store[x][y] = EL_EMERALD_PURPLE;
+ else if (center_element == EL_BUG)
+ Store[x][y] = ((x == ex && y == ey) ? EL_DIAMOND : EL_EMERALD);
+ else if (center_element == EL_BD_BUTTERFLY)
+ Store[x][y] = EL_BD_DIAMOND;
+ else if (center_element == EL_SP_ELECTRON)
+ Store[x][y] = EL_SP_INFOTRON;
+ else if (center_element == EL_AMOEBA_TO_DIAMOND)
+ Store[x][y] = level.amoeba_content;
+ else if (center_element == EL_YAMYAM)
+ Store[x][y] =
+ level.yamyam_content[game.yamyam_content_nr][x - ex + 1][y - ey + 1];
+ else if (IS_CUSTOM_ELEMENT(center_element))
+ Store[x][y] =
+ CUSTOM_ELEMENT_INFO(center_element).content[x - ex + 1][y - ey + 1];
+ else if (element == EL_WALL_EMERALD)
+ Store[x][y] = EL_EMERALD;
+ else if (element == EL_WALL_DIAMOND)
+ Store[x][y] = EL_DIAMOND;
+ else if (element == EL_WALL_BD_DIAMOND)
+ Store[x][y] = EL_BD_DIAMOND;
+ else if (element == EL_WALL_EMERALD_YELLOW)
+ Store[x][y] = EL_EMERALD_YELLOW;
+ else if (element == EL_WALL_EMERALD_RED)
+ Store[x][y] = EL_EMERALD_RED;
+ else if (element == EL_WALL_EMERALD_PURPLE)
+ Store[x][y] = EL_EMERALD_PURPLE;
+ else if (element == EL_WALL_PEARL)
+ Store[x][y] = EL_PEARL;
+ else if (element == EL_WALL_CRYSTAL)
+ Store[x][y] = EL_CRYSTAL;
+ else
+ Store[x][y] = EL_EMPTY;
+
+ if (x != ex || y != ey ||
+ center_element == EL_AMOEBA_TO_DIAMOND || mode == EX_BORDER)
+ Store2[x][y] = element;
+
+ if (AmoebaNr[x][y] &&
+ (element == EL_AMOEBA_FULL ||
+ element == EL_BD_AMOEBA ||
+ element == EL_AMOEBA_GROWING))
+ {
+ AmoebaCnt[AmoebaNr[x][y]]--;
+ AmoebaCnt2[AmoebaNr[x][y]]--;
+ }
+
+ Feld[x][y] = EL_EXPLOSION;
+ GfxElement[x][y] = EL_UNDEFINED;
+ MovDir[x][y] = MovPos[x][y] = 0;
+ AmoebaNr[x][y] = 0;
+ ExplodePhase[x][y] = 1;
+ Stop[x][y] = TRUE;
+ }
+
+ if (center_element == EL_YAMYAM)
+ game.yamyam_content_nr =
+ (game.yamyam_content_nr + 1) % level.num_yamyam_contents;
+
+ return;
+ }
+
+ if (Stop[ex][ey])
+ return;
+
+ x = ex;
+ y = ey;
+
+ ExplodePhase[x][y] = (phase < last_phase ? phase + 1 : 0);
+
+ if (phase == first_phase_after_start)
+ {
+ int element = Store2[x][y];
+
+ if (element == EL_BLACK_ORB)
+ {
+ Feld[x][y] = Store2[x][y];
+ Store2[x][y] = 0;
+ Bang(x, y);
+ }
+ }
+ else if (phase == half_phase)
+ {
+ int element = Store2[x][y];
+
+ if (IS_PLAYER(x, y))
+ KillHeroUnlessProtected(x, y);
+ else if (CAN_EXPLODE(element))
+ {
+ Feld[x][y] = Store2[x][y];
+ Store2[x][y] = 0;
+ Bang(x, y);
+ }
+ else if (element == EL_AMOEBA_TO_DIAMOND)
+ AmoebeUmwandeln(x, y);
+ }
+
+ if (phase == last_phase)
+ {
+ int element;
+
+ element = Feld[x][y] = Store[x][y];
+ Store[x][y] = Store2[x][y] = 0;
+
+ if (Back[x][y] && IS_INDESTRUCTIBLE(Back[x][y]))
+ element = Feld[x][y] = Back[x][y];
+ Back[x][y] = 0;
+
+ MovDir[x][y] = MovPos[x][y] = MovDelay[x][y] = 0;
+ InitField(x, y, FALSE);
+ if (CAN_MOVE(element))
+ InitMovDir(x, y);
+ DrawLevelField(x, y);
+
+ if (IS_PLAYER(x, y) && !PLAYERINFO(x,y)->present)
+ StorePlayer[x][y] = 0;
+ }
+ else if (phase >= delay && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+ {
+ int stored = Store[x][y];
+ int graphic = (game.emulation != EMU_SUPAPLEX ? IMG_EXPLOSION :
+ stored == EL_SP_INFOTRON ? IMG_SP_EXPLOSION_INFOTRON :
+ IMG_SP_EXPLOSION);
+ int frame = getGraphicAnimationFrame(graphic, phase - delay);
+
+ if (phase == delay)
+ DrawLevelFieldCrumbledSand(x, y);
+
+ if (IS_WALKABLE_OVER(Back[x][y]) && Back[x][y] != EL_EMPTY)
+ {
+ DrawLevelElement(x, y, Back[x][y]);
+ DrawGraphicThruMask(SCREENX(x), SCREENY(y), graphic, frame);
+ }
+ else if (IS_WALKABLE_UNDER(Back[x][y]))
+ {
+ DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+ DrawLevelElementThruMask(x, y, Back[x][y]);
+ }
+ else if (!IS_WALKABLE_INSIDE(Back[x][y]))
+ DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+ }
+}
+
+void DynaExplode(int ex, int ey)
+{
+ int i, j;
+ int dynabomb_size = 1;
+ boolean dynabomb_xl = FALSE;
+ struct PlayerInfo *player;
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+
+ if (IS_ACTIVE_BOMB(Feld[ex][ey]))
+ {
+ player = &stored_player[Feld[ex][ey] - EL_DYNABOMB_PLAYER_1_ACTIVE];
+ dynabomb_size = player->dynabomb_size;
+ dynabomb_xl = player->dynabomb_xl;
+ player->dynabombs_left++;
+ }
+
+ Explode(ex, ey, EX_PHASE_START, EX_CENTER);
+
+ for (i=0; i<4; i++)
+ {
+ for (j=1; j<=dynabomb_size; j++)
+ {
+ int x = ex + j * xy[i % 4][0];
+ int y = ey + j * xy[i % 4][1];
+ int element;
+
+ if (!IN_LEV_FIELD(x, y) || IS_INDESTRUCTIBLE(Feld[x][y]))
+ break;
+
+ element = Feld[x][y];
+
+ /* do not restart explosions of fields with active bombs */
+ if (element == EL_EXPLOSION && IS_ACTIVE_BOMB(Store2[x][y]))
+ continue;
+
+ Explode(x, y, EX_PHASE_START, EX_BORDER);
+
+ if (element != EL_EMPTY &&
+ element != EL_SAND &&
+ element != EL_EXPLOSION &&
+ !dynabomb_xl)
+ break;
+ }
+ }
+}
+
+void Bang(int x, int y)
+{
+ int element = Feld[x][y];
+
+ if (game.emulation == EMU_SUPAPLEX)
+ PlaySoundLevel(x, y, SND_SP_ELEMENT_EXPLODING);
+ else
+ PlaySoundLevel(x, y, SND_ELEMENT_EXPLODING);
+
+#if 0
+ if (IS_PLAYER(x, y)) /* remove objects that might cause smaller explosion */
+ element = EL_EMPTY;
+#endif
+
+ switch(element)
+ {
+ case EL_BUG:
+ case EL_SPACESHIP:
+ case EL_BD_BUTTERFLY:
+ case EL_BD_FIREFLY:
+ case EL_YAMYAM:
+ case EL_DARK_YAMYAM:
+ case EL_ROBOT:
+ case EL_PACMAN:
+ case EL_MOLE:
+ RaiseScoreElement(element);
+ Explode(x, y, EX_PHASE_START, EX_NORMAL);
+ break;
+ case EL_DYNABOMB_PLAYER_1_ACTIVE:
+ case EL_DYNABOMB_PLAYER_2_ACTIVE:
+ case EL_DYNABOMB_PLAYER_3_ACTIVE:
+ case EL_DYNABOMB_PLAYER_4_ACTIVE:
+ case EL_DYNABOMB_INCREASE_NUMBER:
+ case EL_DYNABOMB_INCREASE_SIZE:
+ case EL_DYNABOMB_INCREASE_POWER:
+ DynaExplode(x, y);
+ break;
+ case EL_PENGUIN:
+ case EL_LAMP:
+ case EL_LAMP_ACTIVE:
+ if (IS_PLAYER(x, y))
+ Explode(x, y, EX_PHASE_START, EX_NORMAL);
+ else
+ Explode(x, y, EX_PHASE_START, EX_CENTER);
+ break;
+ default:
+ Explode(x, y, EX_PHASE_START, EX_NORMAL);
+ break;
+ }
+}
+
+void SplashAcid(int x, int y)
+{
+ int element = Feld[x][y];
+
+ if (element != EL_ACID_SPLASH_LEFT &&
+ element != EL_ACID_SPLASH_RIGHT)
+ {
+ PlaySoundLevel(x, y, SND_ACID_SPLASHING);
+
+ if (IN_LEV_FIELD(x-1, y) && IS_FREE(x-1, y) &&
+ (!IN_LEV_FIELD(x-1, y-1) ||
+ !CAN_FALL(MovingOrBlocked2Element(x-1, y-1))))
+ Feld[x-1][y] = EL_ACID_SPLASH_LEFT;
+
+ if (IN_LEV_FIELD(x+1, y) && IS_FREE(x+1, y) &&
+ (!IN_LEV_FIELD(x+1, y-1) ||
+ !CAN_FALL(MovingOrBlocked2Element(x+1, y-1))))
+ Feld[x+1][y] = EL_ACID_SPLASH_RIGHT;
+ }
+}
+
+static void InitBeltMovement()
+{
+ static int belt_base_element[4] =
+ {
+ EL_CONVEYOR_BELT_1_LEFT,
+ EL_CONVEYOR_BELT_2_LEFT,
+ EL_CONVEYOR_BELT_3_LEFT,
+ EL_CONVEYOR_BELT_4_LEFT
+ };
+ static int belt_base_active_element[4] =
+ {
+ EL_CONVEYOR_BELT_1_LEFT_ACTIVE,
+ EL_CONVEYOR_BELT_2_LEFT_ACTIVE,
+ EL_CONVEYOR_BELT_3_LEFT_ACTIVE,
+ EL_CONVEYOR_BELT_4_LEFT_ACTIVE
+ };
+
+ int x, y, i, j;
+
+ /* set frame order for belt animation graphic according to belt direction */
+ for (i=0; i<4; i++)
+ {
+ int belt_nr = i;
+
+ for (j=0; j<3; j++)
+ {
+ int element = belt_base_active_element[belt_nr] + j;
+ int graphic = el2img(element);
+
+ if (game.belt_dir[i] == MV_LEFT)
+ graphic_info[graphic].anim_mode &= ~ANIM_REVERSE;
+ else
+ graphic_info[graphic].anim_mode |= ANIM_REVERSE;
+ }
+ }
+
+ for(y=0; y<lev_fieldy; y++)
+ {
+ for(x=0; x<lev_fieldx; x++)
+ {
+ int element = Feld[x][y];
+
+ for (i=0; i<4; i++)
+ {
+ if (IS_BELT(element) && game.belt_dir[i] != MV_NO_MOVING)
+ {
+ int e_belt_nr = getBeltNrFromBeltElement(element);
+ int belt_nr = i;
+
+ if (e_belt_nr == belt_nr)
+ {
+ int belt_part = Feld[x][y] - belt_base_element[belt_nr];
+
+ Feld[x][y] = belt_base_active_element[belt_nr] + belt_part;
+ }
+ }
+ }
+ }
+ }
+}
+
+static void ToggleBeltSwitch(int x, int y)
+{
+ static int belt_base_element[4] =
+ {
+ EL_CONVEYOR_BELT_1_LEFT,
+ EL_CONVEYOR_BELT_2_LEFT,
+ EL_CONVEYOR_BELT_3_LEFT,
+ EL_CONVEYOR_BELT_4_LEFT
+ };
+ static int belt_base_active_element[4] =
+ {
+ EL_CONVEYOR_BELT_1_LEFT_ACTIVE,
+ EL_CONVEYOR_BELT_2_LEFT_ACTIVE,
+ EL_CONVEYOR_BELT_3_LEFT_ACTIVE,
+ EL_CONVEYOR_BELT_4_LEFT_ACTIVE
+ };
+ static int belt_base_switch_element[4] =
+ {
+ EL_CONVEYOR_BELT_1_SWITCH_LEFT,
+ EL_CONVEYOR_BELT_2_SWITCH_LEFT,
+ EL_CONVEYOR_BELT_3_SWITCH_LEFT,
+ EL_CONVEYOR_BELT_4_SWITCH_LEFT
+ };
+ static int belt_move_dir[4] =
+ {
+ MV_LEFT,
+ MV_NO_MOVING,
+ MV_RIGHT,
+ MV_NO_MOVING,
+ };
+
+ int element = Feld[x][y];
+ int belt_nr = getBeltNrFromBeltSwitchElement(element);
+ int belt_dir_nr = (game.belt_dir_nr[belt_nr] + 1) % 4;
+ int belt_dir = belt_move_dir[belt_dir_nr];
+ int xx, yy, i;
+
+ if (!IS_BELT_SWITCH(element))
+ return;
+
+ game.belt_dir_nr[belt_nr] = belt_dir_nr;
+ game.belt_dir[belt_nr] = belt_dir;