+ default: return element;
+ }
+}
+
+#if 0
+int el_act_dir2img(int element, int action, int direction)
+{
+ element = GFX_ELEMENT(element);
+
+ if (direction == MV_NONE)
+ return element_info[element].graphic[action];
+
+ direction = MV_DIR_TO_BIT(direction);
+
+ return element_info[element].direction_graphic[action][direction];
+}
+#else
+int el_act_dir2img(int element, int action, int direction)
+{
+ element = GFX_ELEMENT(element);
+ direction = MV_DIR_TO_BIT(direction); /* default: MV_NONE => MV_DOWN */
+
+ /* direction_graphic[][] == graphic[] for undefined direction graphics */
+ return element_info[element].direction_graphic[action][direction];
+}
+#endif
+
+#if 0
+static int el_act_dir2crm(int element, int action, int direction)
+{
+ element = GFX_ELEMENT(element);
+
+ if (direction == MV_NONE)
+ return element_info[element].crumbled[action];
+
+ direction = MV_DIR_TO_BIT(direction);
+
+ return element_info[element].direction_crumbled[action][direction];
+}
+#else
+static int el_act_dir2crm(int element, int action, int direction)
+{
+ element = GFX_ELEMENT(element);
+ direction = MV_DIR_TO_BIT(direction); /* default: MV_NONE => MV_DOWN */
+
+ /* direction_graphic[][] == graphic[] for undefined direction graphics */
+ return element_info[element].direction_crumbled[action][direction];
+}
+#endif
+
+int el_act2img(int element, int action)
+{
+ element = GFX_ELEMENT(element);
+
+ return element_info[element].graphic[action];
+}
+
+int el_act2crm(int element, int action)
+{
+ element = GFX_ELEMENT(element);
+
+ return element_info[element].crumbled[action];
+}
+
+int el_dir2img(int element, int direction)
+{
+ element = GFX_ELEMENT(element);
+
+ return el_act_dir2img(element, ACTION_DEFAULT, direction);
+}
+
+int el2baseimg(int element)
+{
+ return element_info[element].graphic[ACTION_DEFAULT];
+}
+
+int el2img(int element)
+{
+ element = GFX_ELEMENT(element);
+
+ return element_info[element].graphic[ACTION_DEFAULT];
+}
+
+int el2edimg(int element)
+{
+ element = GFX_ELEMENT(element);
+
+ return element_info[element].special_graphic[GFX_SPECIAL_ARG_EDITOR];
+}
+
+int el2preimg(int element)
+{
+ element = GFX_ELEMENT(element);
+
+ return element_info[element].special_graphic[GFX_SPECIAL_ARG_PREVIEW];
+}
+
+int el2panelimg(int element)
+{
+ element = GFX_ELEMENT(element);
+
+ return element_info[element].special_graphic[GFX_SPECIAL_ARG_PANEL];
+}
+
+int font2baseimg(int font_nr)
+{
+ return font_info[font_nr].special_graphic[GFX_SPECIAL_ARG_DEFAULT];
+}
+
+int getBeltNrFromBeltElement(int element)
+{
+ return (element < EL_CONVEYOR_BELT_2_LEFT ? 0 :
+ element < EL_CONVEYOR_BELT_3_LEFT ? 1 :
+ element < EL_CONVEYOR_BELT_4_LEFT ? 2 : 3);
+}
+
+int getBeltNrFromBeltActiveElement(int element)
+{
+ return (element < EL_CONVEYOR_BELT_2_LEFT_ACTIVE ? 0 :
+ element < EL_CONVEYOR_BELT_3_LEFT_ACTIVE ? 1 :
+ element < EL_CONVEYOR_BELT_4_LEFT_ACTIVE ? 2 : 3);
+}
+
+int getBeltNrFromBeltSwitchElement(int element)
+{
+ return (element < EL_CONVEYOR_BELT_2_SWITCH_LEFT ? 0 :
+ element < EL_CONVEYOR_BELT_3_SWITCH_LEFT ? 1 :
+ element < EL_CONVEYOR_BELT_4_SWITCH_LEFT ? 2 : 3);
+}
+
+int getBeltDirNrFromBeltElement(int element)
+{
+ 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
+ };
+
+ int belt_nr = getBeltNrFromBeltElement(element);
+ int belt_dir_nr = element - belt_base_element[belt_nr];
+
+ return (belt_dir_nr % 3);
+}
+
+int getBeltDirNrFromBeltSwitchElement(int element)
+{
+ static int belt_base_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
+ };
+
+ int belt_nr = getBeltNrFromBeltSwitchElement(element);
+ int belt_dir_nr = element - belt_base_element[belt_nr];
+
+ return (belt_dir_nr % 3);
+}
+
+int getBeltDirFromBeltElement(int element)
+{
+ static int belt_move_dir[3] =
+ {
+ MV_LEFT,
+ MV_NONE,
+ MV_RIGHT
+ };
+
+ int belt_dir_nr = getBeltDirNrFromBeltElement(element);
+
+ return belt_move_dir[belt_dir_nr];
+}
+
+int getBeltDirFromBeltSwitchElement(int element)
+{
+ static int belt_move_dir[3] =
+ {
+ MV_LEFT,
+ MV_NONE,
+ MV_RIGHT
+ };
+
+ int belt_dir_nr = getBeltDirNrFromBeltSwitchElement(element);
+
+ return belt_move_dir[belt_dir_nr];
+}
+
+int getBeltElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
+{
+ 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
+ };
+
+ return belt_base_element[belt_nr] + belt_dir_nr;
+}
+
+int getBeltElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
+{
+ int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
+
+ return getBeltElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
+}
+
+int getBeltSwitchElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
+{
+ static int belt_base_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
+ };
+
+ return belt_base_element[belt_nr] + belt_dir_nr;
+}
+
+int getBeltSwitchElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
+{
+ int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
+
+ return getBeltSwitchElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
+}
+
+int getNumActivePlayers_EM()
+{
+ int num_players = 0;
+ int i;
+
+ if (!tape.playing)
+ return -1;
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ if (tape.player_participates[i])
+ num_players++;
+
+ return num_players;
+}
+
+int getGameFrameDelay_EM(int native_em_game_frame_delay)
+{
+ int game_frame_delay_value;
+
+ game_frame_delay_value =
+ (tape.playing && tape.fast_forward ? FfwdFrameDelay :
+ GameFrameDelay == GAME_FRAME_DELAY ? native_em_game_frame_delay :
+ GameFrameDelay);
+
+ if (tape.playing && tape.warp_forward && !tape.pausing)
+ game_frame_delay_value = 0;
+
+ return game_frame_delay_value;
+}
+
+unsigned int InitRND(long seed)
+{
+ if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
+ return InitEngineRandom_EM(seed);
+ else
+ return InitEngineRandom_RND(seed);
+}
+
+#if 1
+static struct Mapping_EM_to_RND_object object_mapping[TILE_MAX];
+static struct Mapping_EM_to_RND_player player_mapping[MAX_PLAYERS][SPR_MAX];
+#endif
+
+void ResetGfxAnimation_EM(int x, int y, int tile)
+{
+ GfxFrame[x][y] = 0;
+}
+
+void SetGfxAnimation_EM(int tile, int frame_em, int x, int y)
+{
+#if 0
+ int element = object_mapping[tile].element_rnd;
+#endif
+ int action = object_mapping[tile].action;
+ int direction = object_mapping[tile].direction;
+ boolean is_backside = object_mapping[tile].is_backside;
+ boolean action_removing = (action == ACTION_DIGGING ||
+ action == ACTION_SNAPPING ||
+ action == ACTION_COLLECTING);
+
+#if 0
+ printf("::: SET: %d, %d: '%s'\n", x, y, EL_NAME(element));
+#endif
+
+#if 1
+ if (action_removing)
+ {
+#if 0
+ printf("::: %d, %d: action_removing [%s]\n", x, y, EL_NAME(element));
+#endif
+
+ GfxFrame[x][y] = 7 - frame_em;
+ }
+ else if (action == ACTION_FALLING ||
+ action == ACTION_MOVING ||
+ action == ACTION_PUSHING ||
+ action == ACTION_EATING ||
+ action == ACTION_FILLING ||
+ action == ACTION_EMPTYING)
+ {
+ int move_dir =
+ (action == ACTION_FALLING ||
+ action == ACTION_FILLING ||
+ action == ACTION_EMPTYING ? MV_DOWN : direction);
+
+ if (is_backside)
+ {
+ GfxFrame[x][y]++;
+
+ if (move_dir == MV_LEFT)
+ GfxFrame[x - 1][y] = GfxFrame[x][y];
+ else if (move_dir == MV_RIGHT)
+ GfxFrame[x + 1][y] = GfxFrame[x][y];
+ else if (move_dir == MV_UP)
+ GfxFrame[x][y - 1] = GfxFrame[x][y];
+ else if (move_dir == MV_DOWN)
+ GfxFrame[x][y + 1] = GfxFrame[x][y];
+ }
+
+#if 0
+ printf("::: %d, %d: %s, %d, %d [%d]\n", x, y, EL_NAME(element), is_backside,
+ move_dir, GfxFrame[x][y]);
+#endif
+ }
+ else
+ GfxFrame[x][y]++;
+#else
+ GfxFrame[x][y] = 7 - frame_em;
+#endif
+}
+
+#if 1
+
+int get_effective_element_EM(int tile, int frame)
+{
+ int i = tile;
+ int j = 7 - frame;
+
+ int element = object_mapping[tile].element_rnd;
+ int action = object_mapping[tile].action;
+ int direction = object_mapping[tile].direction;
+ boolean is_backside = object_mapping[tile].is_backside;
+ boolean action_removing = (action == ACTION_DIGGING ||
+ action == ACTION_SNAPPING ||
+ action == ACTION_COLLECTING);
+#if 0
+ boolean action_exploding = ((action == ACTION_EXPLODING ||
+ action == ACTION_SMASHED_BY_ROCK ||
+ action == ACTION_SMASHED_BY_SPRING) &&
+ element != EL_DIAMOND);
+ boolean action_active = (action == ACTION_ACTIVE);
+ boolean action_other = (action == ACTION_OTHER);
+#endif
+
+ {
+ {
+ int effective_element = (j > 5 && i == Yacid_splash_eB ? EL_EMPTY :
+ j > 5 && i == Yacid_splash_wB ? EL_EMPTY :
+ j < 7 ? element :
+ i == Xdrip_stretch ? element :
+ i == Xdrip_stretchB ? element :
+ i == Ydrip_s1 ? element :
+ i == Ydrip_s1B ? element :
+ i == Xball_1B ? element :
+ i == Xball_2 ? element :
+ i == Xball_2B ? element :
+ i == Yball_eat ? element :
+ i == Ykey_1_eat ? element :
+ i == Ykey_2_eat ? element :
+ i == Ykey_3_eat ? element :
+ i == Ykey_4_eat ? element :
+ i == Ykey_5_eat ? element :
+ i == Ykey_6_eat ? element :
+ i == Ykey_7_eat ? element :
+ i == Ykey_8_eat ? element :
+ i == Ylenses_eat ? element :
+ i == Ymagnify_eat ? element :
+ i == Ygrass_eat ? element :
+ i == Ydirt_eat ? element :
+ i == Yemerald_stone ? EL_EMERALD :
+ i == Ydiamond_stone ? EL_ROCK :
+ i == Xsand_stonein_1 ? element :
+ i == Xsand_stonein_2 ? element :
+ i == Xsand_stonein_3 ? element :
+ i == Xsand_stonein_4 ? element :
+ is_backside ? EL_EMPTY :
+ action_removing ? EL_EMPTY :
+ element);
+
+ return effective_element;
+ }
+ }
+}
+
+void getGraphicSourceObjectExt_EM(struct GraphicInfo_EM *g_em,
+ int tile, int frame_em, int x, int y)
+{
+ int element = object_mapping[tile].element_rnd;
+ int action = object_mapping[tile].action;
+ int direction = object_mapping[tile].direction;
+ boolean is_backside = object_mapping[tile].is_backside;
+ boolean action_removing = (action == ACTION_DIGGING ||
+ action == ACTION_SNAPPING ||
+ action == ACTION_COLLECTING);
+#if 1
+ int effective_element = get_effective_element_EM(tile, frame_em);
+#else
+ int effective_element = (frame_em > 0 ? element :
+ is_backside ? EL_EMPTY :
+ action_removing ? EL_EMPTY :
+ element);
+#endif
+ int graphic = (direction == MV_NONE ?
+ el_act2img(effective_element, action) :
+ el_act_dir2img(effective_element, action, direction));
+ int crumbled = (direction == MV_NONE ?
+ el_act2crm(effective_element, action) :
+ el_act_dir2crm(effective_element, action, direction));
+ int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
+ int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
+ boolean has_crumbled_graphics = (base_crumbled != base_graphic);
+ struct GraphicInfo *g = &graphic_info[graphic];
+ struct GraphicInfo *g_crumbled = &graphic_info[crumbled];
+ int sync_frame;
+
+#if 0
+ printf("::: GET: %d, %d: '%s'\n", x, y, EL_NAME(element));
+#endif
+
+#if 0
+ if (GfxFrame[x][y] < 8)
+ printf("::: %d, %d: %d [%s]\n", x, y, GfxFrame[x][y], EL_NAME(element));
+#endif
+
+#if 1
+ if (frame_em == 7) /* reset animation frame for certain elements */
+ {
+ if (tile == Xboom_1 ||
+ tile == Xdynamite_1 ||
+ tile == Ybug_w_n ||
+ tile == Ybug_n_e ||
+ tile == Ybug_e_s ||
+ tile == Ybug_s_w ||
+ tile == Ybug_e_n ||
+ tile == Ybug_s_e ||
+ tile == Ybug_w_s ||
+ tile == Ybug_n_w ||
+ tile == Ytank_w_n ||
+ tile == Ytank_n_e ||
+ tile == Ytank_e_s ||
+ tile == Ytank_s_w ||
+ tile == Ytank_e_n ||
+ tile == Ytank_s_e ||
+ tile == Ytank_w_s ||
+ tile == Ytank_n_w)
+ GfxFrame[x][y] = 0;
+ }
+#endif
+
+#if 1
+ if (graphic_info[graphic].anim_global_sync)
+ sync_frame = FrameCounter;
+ else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
+ sync_frame = GfxFrame[x][y];
+ else
+ sync_frame = 0; /* steel border */
+#else
+ if (graphic_info[graphic].anim_global_sync)
+ sync_frame = FrameCounter;
+ else
+ sync_frame = 7 - frame_em;
+#endif
+
+ SetRandomAnimationValue(x, y);