+ { 0, 0, 0 },
+ { MV_DOWN, MV_UP, MV_RIGHT },
+ { MV_UP, MV_DOWN, MV_LEFT },
+ { 0, 0, 0 },
+ { MV_LEFT, MV_RIGHT, MV_DOWN },
+ { 0, 0, 0 },
+ { 0, 0, 0 },
+ { 0, 0, 0 },
+ { MV_RIGHT, MV_LEFT, MV_UP }
+ };
+
+ int element = Feld[x][y];
+ int move_pattern = element_info[element].move_pattern;
+
+ int old_move_dir = MovDir[x][y];
+ int left_dir = turn[old_move_dir].left;
+ int right_dir = turn[old_move_dir].right;
+ int back_dir = turn[old_move_dir].back;
+
+ int left_dx = move_xy[left_dir].x, left_dy = move_xy[left_dir].y;
+ int right_dx = move_xy[right_dir].x, right_dy = move_xy[right_dir].y;
+ int move_dx = move_xy[old_move_dir].x, move_dy = move_xy[old_move_dir].y;
+ int back_dx = move_xy[back_dir].x, back_dy = move_xy[back_dir].y;
+
+ int left_x = x + left_dx, left_y = y + left_dy;
+ int right_x = x + right_dx, right_y = y + right_dy;
+ int move_x = x + move_dx, move_y = y + move_dy;
+
+ int xx, yy;
+
+ if (element == EL_BUG || element == EL_BD_BUTTERFLY)
+ {
+ TestIfBadThingTouchesOtherBadThing(x, y);
+
+ if (ENEMY_CAN_ENTER_FIELD(right_x, right_y))
+ MovDir[x][y] = right_dir;
+ else if (!ENEMY_CAN_ENTER_FIELD(move_x, move_y))
+ MovDir[x][y] = left_dir;
+
+ if (element == EL_BUG && MovDir[x][y] != old_move_dir)
+ MovDelay[x][y] = 9;
+ else if (element == EL_BD_BUTTERFLY) /* && MovDir[x][y] == left_dir) */
+ MovDelay[x][y] = 1;
+ }
+ else if (element == EL_SPACESHIP || element == EL_BD_FIREFLY ||
+ element == EL_SP_SNIKSNAK || element == EL_SP_ELECTRON)
+ {
+ TestIfBadThingTouchesOtherBadThing(x, y);
+
+ if (ENEMY_CAN_ENTER_FIELD(left_x, left_y))
+ MovDir[x][y] = left_dir;
+ else if (!ENEMY_CAN_ENTER_FIELD(move_x, move_y))
+ MovDir[x][y] = right_dir;
+
+ if ((element == EL_SPACESHIP ||
+ element == EL_SP_SNIKSNAK ||
+ element == EL_SP_ELECTRON)
+ && MovDir[x][y] != old_move_dir)
+ MovDelay[x][y] = 9;
+ else if (element == EL_BD_FIREFLY) /* && MovDir[x][y] == right_dir) */
+ MovDelay[x][y] = 1;
+ }
+ else if (element == EL_YAMYAM)
+ {
+ boolean can_turn_left = YAMYAM_CAN_ENTER_FIELD(left_x, left_y);
+ boolean can_turn_right = YAMYAM_CAN_ENTER_FIELD(right_x, right_y);
+
+ if (can_turn_left && can_turn_right)
+ MovDir[x][y] = (RND(3) ? (RND(2) ? left_dir : right_dir) : back_dir);
+ else if (can_turn_left)
+ MovDir[x][y] = (RND(2) ? left_dir : back_dir);
+ else if (can_turn_right)
+ MovDir[x][y] = (RND(2) ? right_dir : back_dir);
+ else
+ MovDir[x][y] = back_dir;
+
+ MovDelay[x][y] = 16 + 16 * RND(3);
+ }
+ else if (element == EL_DARK_YAMYAM)
+ {
+ boolean can_turn_left = DARK_YAMYAM_CAN_ENTER_FIELD(left_x, left_y);
+ boolean can_turn_right = DARK_YAMYAM_CAN_ENTER_FIELD(right_x, right_y);
+
+ if (can_turn_left && can_turn_right)
+ MovDir[x][y] = (RND(3) ? (RND(2) ? left_dir : right_dir) : back_dir);
+ else if (can_turn_left)
+ MovDir[x][y] = (RND(2) ? left_dir : back_dir);
+ else if (can_turn_right)
+ MovDir[x][y] = (RND(2) ? right_dir : back_dir);
+ else
+ MovDir[x][y] = back_dir;
+
+ MovDelay[x][y] = 16 + 16 * RND(3);
+ }
+ else if (element == EL_PACMAN)
+ {
+ boolean can_turn_left = PACMAN_CAN_ENTER_FIELD(left_x, left_y);
+ boolean can_turn_right = PACMAN_CAN_ENTER_FIELD(right_x, right_y);
+
+ if (can_turn_left && can_turn_right)
+ MovDir[x][y] = (RND(3) ? (RND(2) ? left_dir : right_dir) : back_dir);
+ else if (can_turn_left)
+ MovDir[x][y] = (RND(2) ? left_dir : back_dir);
+ else if (can_turn_right)
+ MovDir[x][y] = (RND(2) ? right_dir : back_dir);
+ else
+ MovDir[x][y] = back_dir;
+
+ MovDelay[x][y] = 6 + RND(40);
+ }
+ else if (element == EL_PIG)
+ {
+ boolean can_turn_left = PIG_CAN_ENTER_FIELD(left_x, left_y);
+ boolean can_turn_right = PIG_CAN_ENTER_FIELD(right_x, right_y);
+ boolean can_move_on = PIG_CAN_ENTER_FIELD(move_x, move_y);
+ boolean should_turn_left, should_turn_right, should_move_on;
+ int rnd_value = 24;
+ int rnd = RND(rnd_value);
+
+ should_turn_left = (can_turn_left &&
+ (!can_move_on ||
+ IN_LEV_FIELD_AND_NOT_FREE(x + back_dx + left_dx,
+ y + back_dy + left_dy)));
+ should_turn_right = (can_turn_right &&
+ (!can_move_on ||
+ IN_LEV_FIELD_AND_NOT_FREE(x + back_dx + right_dx,
+ y + back_dy + right_dy)));
+ should_move_on = (can_move_on &&
+ (!can_turn_left ||
+ !can_turn_right ||
+ IN_LEV_FIELD_AND_NOT_FREE(x + move_dx + left_dx,
+ y + move_dy + left_dy) ||
+ IN_LEV_FIELD_AND_NOT_FREE(x + move_dx + right_dx,
+ y + move_dy + right_dy)));
+
+ if (should_turn_left || should_turn_right || should_move_on)
+ {
+ if (should_turn_left && should_turn_right && should_move_on)
+ MovDir[x][y] = (rnd < rnd_value / 3 ? left_dir :
+ rnd < 2 * rnd_value / 3 ? right_dir :
+ old_move_dir);
+ else if (should_turn_left && should_turn_right)
+ MovDir[x][y] = (rnd < rnd_value / 2 ? left_dir : right_dir);
+ else if (should_turn_left && should_move_on)
+ MovDir[x][y] = (rnd < rnd_value / 2 ? left_dir : old_move_dir);
+ else if (should_turn_right && should_move_on)
+ MovDir[x][y] = (rnd < rnd_value / 2 ? right_dir : old_move_dir);
+ else if (should_turn_left)
+ MovDir[x][y] = left_dir;
+ else if (should_turn_right)
+ MovDir[x][y] = right_dir;
+ else if (should_move_on)
+ MovDir[x][y] = old_move_dir;
+ }
+ else if (can_move_on && rnd > rnd_value / 8)
+ MovDir[x][y] = old_move_dir;
+ else if (can_turn_left && can_turn_right)
+ MovDir[x][y] = (rnd < rnd_value / 2 ? left_dir : right_dir);
+ else if (can_turn_left && rnd > rnd_value / 8)
+ MovDir[x][y] = left_dir;
+ else if (can_turn_right && rnd > rnd_value/8)
+ MovDir[x][y] = right_dir;
+ else
+ MovDir[x][y] = back_dir;
+
+ xx = x + move_xy[MovDir[x][y]].x;
+ yy = y + move_xy[MovDir[x][y]].y;
+
+ if (!IS_FREE(xx, yy) && !IS_FOOD_PIG(Feld[xx][yy]))
+ MovDir[x][y] = old_move_dir;
+
+ MovDelay[x][y] = 0;
+ }
+ else if (element == EL_DRAGON)
+ {
+ boolean can_turn_left = IN_LEV_FIELD_AND_IS_FREE(left_x, left_y);
+ boolean can_turn_right = IN_LEV_FIELD_AND_IS_FREE(right_x, right_y);
+ boolean can_move_on = IN_LEV_FIELD_AND_IS_FREE(move_x, move_y);
+ int rnd_value = 24;
+ int rnd = RND(rnd_value);
+
+#if 0
+ if (FrameCounter < 1 && x == 0 && y == 29)
+ printf(":2: %d/%d: %d [%d]\n", x, y, MovDir[x][y], FrameCounter);
+#endif
+
+ if (can_move_on && rnd > rnd_value / 8)
+ MovDir[x][y] = old_move_dir;
+ else if (can_turn_left && can_turn_right)
+ MovDir[x][y] = (rnd < rnd_value / 2 ? left_dir : right_dir);
+ else if (can_turn_left && rnd > rnd_value / 8)
+ MovDir[x][y] = left_dir;
+ else if (can_turn_right && rnd > rnd_value / 8)
+ MovDir[x][y] = right_dir;
+ else
+ MovDir[x][y] = back_dir;
+
+ xx = x + move_xy[MovDir[x][y]].x;
+ yy = y + move_xy[MovDir[x][y]].y;
+
+#if 0
+ if (FrameCounter < 1 && x == 0 && y == 29)
+ printf(":3: %d/%d: %d (%d/%d: %d) [%d]\n", x, y, MovDir[x][y],
+ xx, yy, Feld[xx][yy],
+ FrameCounter);
+#endif
+
+#if 1
+ if (!IN_LEV_FIELD_AND_IS_FREE(xx, yy))
+ MovDir[x][y] = old_move_dir;
+#else
+ if (!IS_FREE(xx, yy))
+ MovDir[x][y] = old_move_dir;
+#endif
+
+#if 0
+ if (FrameCounter < 1 && x == 0 && y == 29)
+ printf(":4: %d/%d: %d [%d]\n", x, y, MovDir[x][y], FrameCounter);
+#endif
+
+ MovDelay[x][y] = 0;
+ }
+ else if (element == EL_MOLE)
+ {
+ boolean can_move_on =
+ (MOLE_CAN_ENTER_FIELD(move_x, move_y,
+ IS_AMOEBOID(Feld[move_x][move_y]) ||
+ Feld[move_x][move_y] == EL_AMOEBA_SHRINKING));
+ if (!can_move_on)
+ {
+ boolean can_turn_left =
+ (MOLE_CAN_ENTER_FIELD(left_x, left_y,
+ IS_AMOEBOID(Feld[left_x][left_y])));
+
+ boolean can_turn_right =
+ (MOLE_CAN_ENTER_FIELD(right_x, right_y,
+ IS_AMOEBOID(Feld[right_x][right_y])));
+
+ if (can_turn_left && can_turn_right)
+ MovDir[x][y] = (RND(2) ? left_dir : right_dir);
+ else if (can_turn_left)
+ MovDir[x][y] = left_dir;
+ else
+ MovDir[x][y] = right_dir;
+ }
+
+ if (MovDir[x][y] != old_move_dir)
+ MovDelay[x][y] = 9;
+ }
+ else if (element == EL_BALLOON)
+ {
+ MovDir[x][y] = game.balloon_dir;
+ MovDelay[x][y] = 0;
+ }
+ else if (element == EL_SPRING)
+ {
+ if (MovDir[x][y] & MV_HORIZONTAL &&
+ (!IN_LEV_FIELD_AND_IS_FREE(move_x, move_y) ||
+ IN_LEV_FIELD_AND_IS_FREE(x, y + 1)))
+ MovDir[x][y] = MV_NO_MOVING;
+
+ MovDelay[x][y] = 0;
+ }
+ else if (element == EL_ROBOT ||
+ element == EL_SATELLITE ||
+ element == EL_PENGUIN)
+ {
+ int attr_x = -1, attr_y = -1;
+
+ if (AllPlayersGone)
+ {
+ attr_x = ExitX;
+ attr_y = ExitY;
+ }
+ else
+ {
+ int i;
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ {
+ struct PlayerInfo *player = &stored_player[i];
+ int jx = player->jx, jy = player->jy;
+
+ if (!player->active)
+ continue;
+
+ if (attr_x == -1 ||
+ ABS(jx - x) + ABS(jy - y) < ABS(attr_x - x) + ABS(attr_y - y))
+ {
+ attr_x = jx;
+ attr_y = jy;
+ }
+ }
+ }
+
+ if (element == EL_ROBOT && ZX >= 0 && ZY >= 0)
+ {
+ attr_x = ZX;
+ attr_y = ZY;
+ }
+
+ if (element == EL_PENGUIN)
+ {
+ int i;
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+
+ for (i = 0; i < 4; i++)
+ {
+ int ex = x + xy[i % 4][0];
+ int ey = y + xy[i % 4][1];
+
+ if (IN_LEV_FIELD(ex, ey) && Feld[ex][ey] == EL_EXIT_OPEN)
+ {
+ attr_x = ex;
+ attr_y = ey;
+ break;
+ }
+ }
+ }
+
+ MovDir[x][y] = MV_NO_MOVING;
+ if (attr_x < x)
+ MovDir[x][y] |= (AllPlayersGone ? MV_RIGHT : MV_LEFT);
+ else if (attr_x > x)
+ MovDir[x][y] |= (AllPlayersGone ? MV_LEFT : MV_RIGHT);
+ if (attr_y < y)
+ MovDir[x][y] |= (AllPlayersGone ? MV_DOWN : MV_UP);
+ else if (attr_y > y)
+ MovDir[x][y] |= (AllPlayersGone ? MV_UP : MV_DOWN);
+
+ if (element == EL_ROBOT)
+ {
+ int newx, newy;
+
+ if (MovDir[x][y] & MV_HORIZONTAL && MovDir[x][y] & MV_VERTICAL)
+ MovDir[x][y] &= (RND(2) ? MV_HORIZONTAL : MV_VERTICAL);
+ Moving2Blocked(x, y, &newx, &newy);
+
+ if (IN_LEV_FIELD(newx, newy) && IS_FREE_OR_PLAYER(newx, newy))
+ MovDelay[x][y] = 8 + 8 * !RND(3);
+ else
+ MovDelay[x][y] = 16;
+ }
+ else if (element == EL_PENGUIN)
+ {
+ int newx, newy;
+
+ MovDelay[x][y] = 1;
+
+ if (MovDir[x][y] & MV_HORIZONTAL && MovDir[x][y] & MV_VERTICAL)
+ {
+ boolean first_horiz = RND(2);
+ int new_move_dir = MovDir[x][y];
+
+ MovDir[x][y] =
+ new_move_dir & (first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+ Moving2Blocked(x, y, &newx, &newy);
+
+ if (PENGUIN_CAN_ENTER_FIELD(newx, newy))
+ return;
+
+ MovDir[x][y] =
+ new_move_dir & (!first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+ Moving2Blocked(x, y, &newx, &newy);
+
+ if (PENGUIN_CAN_ENTER_FIELD(newx, newy))
+ return;
+
+ MovDir[x][y] = old_move_dir;
+ return;
+ }
+ }
+ else /* (element == EL_SATELLITE) */
+ {
+ int newx, newy;
+
+ MovDelay[x][y] = 1;
+
+ if (MovDir[x][y] & MV_HORIZONTAL && MovDir[x][y] & MV_VERTICAL)
+ {
+ boolean first_horiz = RND(2);
+ int new_move_dir = MovDir[x][y];
+
+ MovDir[x][y] =
+ new_move_dir & (first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+ Moving2Blocked(x, y, &newx, &newy);
+
+ if (ELEMENT_CAN_ENTER_FIELD_OR_ACID_2(newx, newy))
+ return;
+
+ MovDir[x][y] =
+ new_move_dir & (!first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+ Moving2Blocked(x, y, &newx, &newy);
+
+ if (ELEMENT_CAN_ENTER_FIELD_OR_ACID_2(newx, newy))
+ return;
+
+ MovDir[x][y] = old_move_dir;
+ return;
+ }
+ }
+ }
+ else if (move_pattern == MV_ALL_DIRECTIONS ||
+ move_pattern == MV_TURNING_LEFT ||
+ move_pattern == MV_TURNING_RIGHT)
+ {
+ boolean can_turn_left = ELEMENT_CAN_ENTER_FIELD(element, left_x, left_y);
+ boolean can_turn_right = ELEMENT_CAN_ENTER_FIELD(element, right_x,right_y);
+
+ if (move_pattern == MV_TURNING_LEFT)
+ MovDir[x][y] = left_dir;
+ else if (move_pattern == MV_TURNING_RIGHT)
+ MovDir[x][y] = right_dir;
+ else if (can_turn_left && can_turn_right)
+ MovDir[x][y] = (RND(3) ? (RND(2) ? left_dir : right_dir) : back_dir);
+ else if (can_turn_left)
+ MovDir[x][y] = (RND(2) ? left_dir : back_dir);
+ else if (can_turn_right)
+ MovDir[x][y] = (RND(2) ? right_dir : back_dir);
+ else
+ MovDir[x][y] = back_dir;
+
+ MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+ }
+ else if (move_pattern == MV_HORIZONTAL ||
+ move_pattern == MV_VERTICAL)
+ {
+ if (move_pattern & old_move_dir)
+ MovDir[x][y] = back_dir;
+ else if (move_pattern == MV_HORIZONTAL)
+ MovDir[x][y] = (RND(2) ? MV_LEFT : MV_RIGHT);
+ else if (move_pattern == MV_VERTICAL)
+ MovDir[x][y] = (RND(2) ? MV_UP : MV_DOWN);
+
+ MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+ }
+ else if (move_pattern & MV_ANY_DIRECTION)
+ {
+ MovDir[x][y] = move_pattern;
+ MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+ }
+ else if (move_pattern == MV_ALONG_LEFT_SIDE)
+ {
+ if (ELEMENT_CAN_ENTER_FIELD(element, left_x, left_y))
+ MovDir[x][y] = left_dir;
+ else if (!ELEMENT_CAN_ENTER_FIELD(element, move_x, move_y))
+ MovDir[x][y] = right_dir;
+
+ if (MovDir[x][y] != old_move_dir)
+ MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+ }
+ else if (move_pattern == MV_ALONG_RIGHT_SIDE)
+ {
+ if (ELEMENT_CAN_ENTER_FIELD(element, right_x, right_y))
+ MovDir[x][y] = right_dir;
+ else if (!ELEMENT_CAN_ENTER_FIELD(element, move_x, move_y))
+ MovDir[x][y] = left_dir;
+
+ if (MovDir[x][y] != old_move_dir)
+ MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+ }
+ else if (move_pattern == MV_TOWARDS_PLAYER ||
+ move_pattern == MV_AWAY_FROM_PLAYER)
+ {
+ int attr_x = -1, attr_y = -1;
+ int newx, newy;
+ boolean move_away = (move_pattern == MV_AWAY_FROM_PLAYER);
+
+ if (AllPlayersGone)
+ {
+ attr_x = ExitX;
+ attr_y = ExitY;
+ }
+ else
+ {
+ int i;
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ {
+ struct PlayerInfo *player = &stored_player[i];
+ int jx = player->jx, jy = player->jy;
+
+ if (!player->active)
+ continue;
+
+ if (attr_x == -1 ||
+ ABS(jx - x) + ABS(jy - y) < ABS(attr_x - x) + ABS(attr_y - y))
+ {
+ attr_x = jx;
+ attr_y = jy;
+ }
+ }
+ }
+
+ MovDir[x][y] = MV_NO_MOVING;
+ if (attr_x < x)
+ MovDir[x][y] |= (move_away ? MV_RIGHT : MV_LEFT);
+ else if (attr_x > x)
+ MovDir[x][y] |= (move_away ? MV_LEFT : MV_RIGHT);
+ if (attr_y < y)
+ MovDir[x][y] |= (move_away ? MV_DOWN : MV_UP);
+ else if (attr_y > y)
+ MovDir[x][y] |= (move_away ? MV_UP : MV_DOWN);
+
+ MovDelay[x][y] = GET_NEW_MOVE_DELAY(element);
+
+ if (MovDir[x][y] & MV_HORIZONTAL && MovDir[x][y] & MV_VERTICAL)
+ {
+ boolean first_horiz = RND(2);
+ int new_move_dir = MovDir[x][y];
+
+ MovDir[x][y] =
+ new_move_dir & (first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+ Moving2Blocked(x, y, &newx, &newy);
+
+ if (ELEMENT_CAN_ENTER_FIELD_OR_ACID(element, newx, newy))
+ return;
+
+ MovDir[x][y] =
+ new_move_dir & (!first_horiz ? MV_HORIZONTAL : MV_VERTICAL);
+ Moving2Blocked(x, y, &newx, &newy);
+
+ if (ELEMENT_CAN_ENTER_FIELD_OR_ACID(element, newx, newy))
+ return;
+
+ MovDir[x][y] = old_move_dir;
+ }
+ }
+ else if (move_pattern == MV_WHEN_PUSHED)
+ {
+ if (!IN_LEV_FIELD_AND_IS_FREE(move_x, move_y))
+ MovDir[x][y] = MV_NO_MOVING;
+
+ MovDelay[x][y] = 0;
+ }
+ else if (move_pattern & MV_MAZE_RUNNER_STYLE ||
+ element == EL_MAZE_RUNNER)
+ {
+ static int test_xy[7][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 },
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ };
+ static int test_dir[7] =
+ {
+ MV_UP,
+ MV_LEFT,
+ MV_RIGHT,
+ MV_DOWN,
+ MV_UP,
+ MV_LEFT,
+ MV_RIGHT,
+ };
+ boolean hunter_mode = (move_pattern == MV_MAZE_HUNTER);
+ int move_preference = -1000000; /* start with very low preference */
+ int new_move_dir = MV_NO_MOVING;
+ int start_test = RND(4);
+ int i;
+
+ for (i = 0; i < 4; i++)
+ {
+ int move_dir = test_dir[start_test + i];
+ int move_dir_preference;
+
+ xx = x + test_xy[start_test + i][0];
+ yy = y + test_xy[start_test + i][1];
+
+ if (hunter_mode && IN_LEV_FIELD(xx, yy) &&
+ (IS_PLAYER(xx, yy) || Feld[xx][yy] == EL_PLAYER_IS_LEAVING))
+ {
+ new_move_dir = move_dir;
+
+ break;
+ }
+
+ if (!MAZE_RUNNER_CAN_ENTER_FIELD(xx, yy))
+ continue;
+
+ move_dir_preference = -1 * RunnerVisit[xx][yy];
+ if (hunter_mode && PlayerVisit[xx][yy] > 0)
+ move_dir_preference = PlayerVisit[xx][yy];
+
+ if (move_dir_preference > move_preference)
+ {
+ /* prefer field that has not been visited for the longest time */
+ move_preference = move_dir_preference;
+ new_move_dir = move_dir;
+ }
+ else if (move_dir_preference == move_preference &&
+ move_dir == old_move_dir)
+ {
+ /* prefer last direction when all directions are preferred equally */
+ move_preference = move_dir_preference;
+ new_move_dir = move_dir;
+ }
+ }
+
+ MovDir[x][y] = new_move_dir;
+ if (old_move_dir != new_move_dir)
+ MovDelay[x][y] = 9;
+ }
+}
+
+static void TurnRound(int x, int y)
+{
+ int direction = MovDir[x][y];
+
+#if 0
+ GfxDir[x][y] = MovDir[x][y];
+#endif
+
+ TurnRoundExt(x, y);
+
+#if 1
+ GfxDir[x][y] = MovDir[x][y];
+#endif
+
+ if (direction != MovDir[x][y])
+ GfxFrame[x][y] = 0;
+
+#if 1
+ if (MovDelay[x][y])
+ GfxAction[x][y] = ACTION_TURNING_FROM_LEFT + MV_DIR_BIT(direction);
+#else
+ if (MovDelay[x][y])
+ GfxAction[x][y] = ACTION_WAITING;
+#endif
+}
+
+static boolean JustBeingPushed(int x, int y)
+{
+ int i;
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ {
+ struct PlayerInfo *player = &stored_player[i];
+
+ if (player->active && player->is_pushing && player->MovPos)
+ {
+ int next_jx = player->jx + (player->jx - player->last_jx);
+ int next_jy = player->jy + (player->jy - player->last_jy);
+
+ if (x == next_jx && y == next_jy)
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+void StartMoving(int x, int y)
+{
+ boolean use_spring_bug = (game.engine_version < VERSION_IDENT(2,2,0,0));
+ boolean started_moving = FALSE; /* some elements can fall _and_ move */
+ int element = Feld[x][y];
+
+ if (Stop[x][y])
+ return;
+
+#if 1
+ if (MovDelay[x][y] == 0)
+ GfxAction[x][y] = ACTION_DEFAULT;
+#else
+ /* !!! this should be handled more generic (not only for mole) !!! */
+ if (element != EL_MOLE && GfxAction[x][y] != ACTION_DIGGING)
+ GfxAction[x][y] = ACTION_DEFAULT;
+#endif
+
+ if (CAN_FALL(element) && y < lev_fieldy - 1)
+ {
+ if ((x > 0 && IS_PLAYER(x - 1, y)) ||
+ (x < lev_fieldx-1 && IS_PLAYER(x + 1, y)))
+ if (JustBeingPushed(x, y))
+ return;
+
+ if (element == EL_QUICKSAND_FULL)
+ {
+ if (IS_FREE(x, y + 1))
+ {
+ InitMovingField(x, y, MV_DOWN);
+ started_moving = TRUE;
+
+ Feld[x][y] = EL_QUICKSAND_EMPTYING;
+ Store[x][y] = EL_ROCK;
+#if 1
+ PlayLevelSoundAction(x, y, ACTION_EMPTYING);
+#else
+ PlayLevelSound(x, y, SND_QUICKSAND_EMPTYING);
+#endif
+ }
+ else if (Feld[x][y + 1] == EL_QUICKSAND_EMPTY)
+ {
+ if (!MovDelay[x][y])
+ MovDelay[x][y] = TILEY + 1;
+
+ if (MovDelay[x][y])
+ {
+ MovDelay[x][y]--;
+ if (MovDelay[x][y])
+ return;
+ }
+
+ Feld[x][y] = EL_QUICKSAND_EMPTY;
+ Feld[x][y + 1] = EL_QUICKSAND_FULL;
+ Store[x][y + 1] = Store[x][y];
+ Store[x][y] = 0;
+#if 1
+ PlayLevelSoundAction(x, y, ACTION_FILLING);
+#else
+ PlayLevelSound(x, y, SND_QUICKSAND_FILLING);
+#endif
+ }
+ }
+ else if ((element == EL_ROCK || element == EL_BD_ROCK) &&
+ Feld[x][y + 1] == EL_QUICKSAND_EMPTY)
+ {
+ InitMovingField(x, y, MV_DOWN);
+ started_moving = TRUE;
+
+ Feld[x][y] = EL_QUICKSAND_FILLING;
+ Store[x][y] = element;
+#if 1
+ PlayLevelSoundAction(x, y, ACTION_FILLING);
+#else
+ PlayLevelSound(x, y, SND_QUICKSAND_FILLING);
+#endif
+ }
+ else if (element == EL_MAGIC_WALL_FULL)
+ {
+ if (IS_FREE(x, y + 1))
+ {
+ InitMovingField(x, y, MV_DOWN);
+ started_moving = TRUE;
+
+ Feld[x][y] = EL_MAGIC_WALL_EMPTYING;
+ Store[x][y] = EL_CHANGED(Store[x][y]);
+ }
+ else if (Feld[x][y + 1] == EL_MAGIC_WALL_ACTIVE)
+ {
+ if (!MovDelay[x][y])
+ MovDelay[x][y] = TILEY/4 + 1;
+
+ if (MovDelay[x][y])
+ {
+ MovDelay[x][y]--;
+ if (MovDelay[x][y])
+ return;
+ }
+
+ Feld[x][y] = EL_MAGIC_WALL_ACTIVE;
+ Feld[x][y + 1] = EL_MAGIC_WALL_FULL;
+ Store[x][y + 1] = EL_CHANGED(Store[x][y]);
+ Store[x][y] = 0;
+ }
+ }
+ else if (element == EL_BD_MAGIC_WALL_FULL)
+ {
+ if (IS_FREE(x, y + 1))
+ {
+ InitMovingField(x, y, MV_DOWN);
+ started_moving = TRUE;
+
+ Feld[x][y] = EL_BD_MAGIC_WALL_EMPTYING;
+ Store[x][y] = EL_CHANGED2(Store[x][y]);
+ }
+ else if (Feld[x][y + 1] == EL_BD_MAGIC_WALL_ACTIVE)
+ {
+ if (!MovDelay[x][y])
+ MovDelay[x][y] = TILEY/4 + 1;
+
+ if (MovDelay[x][y])
+ {
+ MovDelay[x][y]--;
+ if (MovDelay[x][y])
+ return;
+ }
+
+ Feld[x][y] = EL_BD_MAGIC_WALL_ACTIVE;
+ Feld[x][y + 1] = EL_BD_MAGIC_WALL_FULL;
+ Store[x][y + 1] = EL_CHANGED2(Store[x][y]);
+ Store[x][y] = 0;
+ }
+ }
+ else if (CAN_PASS_MAGIC_WALL(element) &&
+ (Feld[x][y + 1] == EL_MAGIC_WALL_ACTIVE ||
+ Feld[x][y + 1] == EL_BD_MAGIC_WALL_ACTIVE))
+ {
+ InitMovingField(x, y, MV_DOWN);
+ started_moving = TRUE;
+
+ Feld[x][y] =
+ (Feld[x][y + 1] == EL_MAGIC_WALL_ACTIVE ? EL_MAGIC_WALL_FILLING :
+ EL_BD_MAGIC_WALL_FILLING);
+ Store[x][y] = element;
+ }
+#if 0
+ else if (CAN_SMASH(element) && Feld[x][y + 1] == EL_ACID)
+#else
+ else if (CAN_FALL(element) && Feld[x][y + 1] == EL_ACID)
+#endif
+ {
+ SplashAcid(x, y);
+
+ InitMovingField(x, y, MV_DOWN);
+ started_moving = TRUE;
+
+ Store[x][y] = EL_ACID;
+#if 0
+ /* !!! TEST !!! better use "_FALLING" etc. !!! */
+ GfxAction[x][y + 1] = ACTION_ACTIVE;
+#endif
+ }
+#if 1
+ else if ((game.engine_version < VERSION_IDENT(2,2,0,7) &&
+ CAN_SMASH(element) && WasJustMoving[x][y] && !Pushed[x][y + 1] &&
+ (Feld[x][y + 1] == EL_BLOCKED)) ||
+ (game.engine_version >= VERSION_IDENT(3,0,7,0) &&
+ CAN_SMASH(element) && WasJustFalling[x][y] &&
+ (Feld[x][y + 1] == EL_BLOCKED || IS_PLAYER(x, y + 1))))
+
+#else
+#if 1
+ else if (game.engine_version < VERSION_IDENT(2,2,0,7) &&
+ CAN_SMASH(element) && Feld[x][y + 1] == EL_BLOCKED &&
+ WasJustMoving[x][y] && !Pushed[x][y + 1])
+#else
+ else if (CAN_SMASH(element) && Feld[x][y + 1] == EL_BLOCKED &&
+ WasJustMoving[x][y])
+#endif
+#endif
+
+ {
+ /* this is needed for a special case not covered by calling "Impact()"
+ from "ContinueMoving()": if an element moves to a tile directly below
+ another element which was just falling on that tile (which was empty
+ in the previous frame), the falling element above would just stop
+ instead of smashing the element below (in previous version, the above
+ element was just checked for "moving" instead of "falling", resulting
+ in incorrect smashes caused by horizontal movement of the above
+ element; also, the case of the player being the element to smash was
+ simply not covered here... :-/ ) */
+
+ Impact(x, y);
+ }
+ else if (IS_FREE(x, y + 1) && element == EL_SPRING && use_spring_bug)
+ {
+ if (MovDir[x][y] == MV_NO_MOVING)
+ {
+ InitMovingField(x, y, MV_DOWN);
+ started_moving = TRUE;
+ }
+ }
+ else if (IS_FREE(x, y + 1) || Feld[x][y + 1] == EL_DIAMOND_BREAKING)
+ {
+ if (WasJustFalling[x][y]) /* prevent animation from being restarted */
+ MovDir[x][y] = MV_DOWN;
+
+ InitMovingField(x, y, MV_DOWN);
+ started_moving = TRUE;
+ }
+ else if (element == EL_AMOEBA_DROP)
+ {
+ Feld[x][y] = EL_AMOEBA_GROWING;
+ Store[x][y] = EL_AMOEBA_WET;
+ }
+ /* Store[x][y + 1] must be zero, because:
+ (EL_QUICKSAND_FULL -> EL_ROCK): Store[x][y + 1] == EL_QUICKSAND_EMPTY
+ */
+#if 0
+#if OLD_GAME_BEHAVIOUR
+ else if (IS_SLIPPERY(Feld[x][y + 1]) && !Store[x][y + 1])
+#else
+ else if (IS_SLIPPERY(Feld[x][y + 1]) && !Store[x][y + 1] &&
+ !IS_FALLING(x, y + 1) && !WasJustMoving[x][y + 1] &&
+ element != EL_DX_SUPABOMB)
+#endif
+#else
+ else if (((IS_SLIPPERY(Feld[x][y + 1]) && !IS_PLAYER(x, y + 1)) ||
+ (IS_EM_SLIPPERY_WALL(Feld[x][y + 1]) && IS_GEM(element))) &&
+ !IS_FALLING(x, y + 1) && !WasJustMoving[x][y + 1] &&
+ element != EL_DX_SUPABOMB && element != EL_SP_DISK_ORANGE)
+#endif
+ {
+ boolean can_fall_left = (x > 0 && IS_FREE(x - 1, y) &&
+ (IS_FREE(x - 1, y + 1) ||
+ Feld[x - 1][y + 1] == EL_ACID));
+ boolean can_fall_right = (x < lev_fieldx - 1 && IS_FREE(x + 1, y) &&
+ (IS_FREE(x + 1, y + 1) ||
+ Feld[x + 1][y + 1] == EL_ACID));
+ boolean can_fall_any = (can_fall_left || can_fall_right);
+ boolean can_fall_both = (can_fall_left && can_fall_right);
+
+ if (can_fall_any && IS_CUSTOM_ELEMENT(Feld[x][y + 1]))
+ {
+ int slippery_type = element_info[Feld[x][y + 1]].slippery_type;
+
+ if (slippery_type == SLIPPERY_ONLY_LEFT)
+ can_fall_right = FALSE;
+ else if (slippery_type == SLIPPERY_ONLY_RIGHT)
+ can_fall_left = FALSE;
+ else if (slippery_type == SLIPPERY_ANY_LEFT_RIGHT && can_fall_both)
+ can_fall_right = FALSE;
+ else if (slippery_type == SLIPPERY_ANY_RIGHT_LEFT && can_fall_both)
+ can_fall_left = FALSE;
+
+ can_fall_any = (can_fall_left || can_fall_right);
+ can_fall_both = (can_fall_left && can_fall_right);
+ }
+
+ if (can_fall_any)
+ {
+ if (can_fall_both &&
+ (game.emulation != EMU_BOULDERDASH &&
+ element != EL_BD_ROCK && element != EL_BD_DIAMOND))
+ can_fall_left = !(can_fall_right = RND(2));
+
+ InitMovingField(x, y, can_fall_left ? MV_LEFT : MV_RIGHT);
+ started_moving = TRUE;
+ }
+ }
+ else if (IS_BELT_ACTIVE(Feld[x][y + 1]))
+ {
+ boolean left_is_free = (x > 0 && IS_FREE(x - 1, y));
+ boolean right_is_free = (x < lev_fieldx - 1 && IS_FREE(x + 1, y));
+ int belt_nr = getBeltNrFromBeltActiveElement(Feld[x][y + 1]);
+ int belt_dir = game.belt_dir[belt_nr];
+
+ if ((belt_dir == MV_LEFT && left_is_free) ||
+ (belt_dir == MV_RIGHT && right_is_free))
+ {
+ InitMovingField(x, y, belt_dir);
+ started_moving = TRUE;
+
+ GfxAction[x][y] = ACTION_DEFAULT;
+ }
+ }
+ }
+
+ /* not "else if" because of elements that can fall and move (EL_SPRING) */
+ if (CAN_MOVE(element) && !started_moving)
+ {
+ int move_pattern = element_info[element].move_pattern;
+ int newx, newy;
+
+#if 1
+ if (IS_PUSHABLE(element) && JustBeingPushed(x, y))
+ return;
+#else
+ if ((element == EL_SATELLITE ||
+ element == EL_BALLOON ||
+ element == EL_SPRING)
+ && JustBeingPushed(x, y))
+ return;
+#endif
+
+#if 0
+#if 0
+ if (element == EL_SPRING && MovDir[x][y] == MV_DOWN)
+ Feld[x][y + 1] = EL_EMPTY; /* was set to EL_BLOCKED above */
+#else
+ if (element == EL_SPRING && MovDir[x][y] != MV_NO_MOVING)
+ {
+ Moving2Blocked(x, y, &newx, &newy);
+ if (Feld[newx][newy] == EL_BLOCKED)
+ Feld[newx][newy] = EL_EMPTY; /* was set to EL_BLOCKED above */
+ }
+#endif
+#endif
+
+#if 0
+ if (FrameCounter < 1 && x == 0 && y == 29)
+ printf(":1: %d/%d: %d [%d]\n", x, y, MovDir[x][y], FrameCounter);
+#endif
+
+ if (!MovDelay[x][y]) /* start new movement phase */
+ {
+ /* all objects that can change their move direction after each step
+ (YAMYAM, DARK_YAMYAM and PACMAN go straight until they hit a wall */
+
+ if (element != EL_YAMYAM &&
+ element != EL_DARK_YAMYAM &&
+ element != EL_PACMAN &&
+ !(move_pattern & MV_ANY_DIRECTION) &&
+ move_pattern != MV_TURNING_LEFT &&
+ move_pattern != MV_TURNING_RIGHT)
+ {
+ TurnRound(x, y);
+
+#if 0
+ if (FrameCounter < 1 && x == 0 && y == 29)
+ printf(":9: %d: %d [%d]\n", y, MovDir[x][y], FrameCounter);
+#endif
+
+ if (MovDelay[x][y] && (element == EL_BUG ||
+ element == EL_SPACESHIP ||
+ element == EL_SP_SNIKSNAK ||
+ element == EL_SP_ELECTRON ||
+ element == EL_MOLE))
+ DrawLevelField(x, y);
+ }
+ }
+
+ if (MovDelay[x][y]) /* wait some time before next movement */
+ {
+ MovDelay[x][y]--;
+
+#if 0
+ if (element == EL_YAMYAM)
+ {
+ printf("::: %d\n",
+ el_act_dir2img(EL_YAMYAM, ACTION_WAITING, MV_LEFT));
+ DrawLevelElementAnimation(x, y, element);
+ }
+#endif
+
+ if (MovDelay[x][y]) /* element still has to wait some time */
+ {
+#if 0
+ /* !!! PLACE THIS SOMEWHERE AFTER "TurnRound()" !!! */
+ ResetGfxAnimation(x, y);
+#endif
+
+#if 0
+ if (GfxAction[x][y] != ACTION_WAITING)
+ printf("::: %d: %d != ACTION_WAITING\n", element, GfxAction[x][y]);
+
+ GfxAction[x][y] = ACTION_WAITING;
+#endif
+ }
+
+ if (element == EL_ROBOT ||
+#if 0
+ element == EL_PACMAN ||
+#endif
+ element == EL_YAMYAM ||
+ element == EL_DARK_YAMYAM)
+ {
+#if 0
+ DrawLevelElementAnimation(x, y, element);
+#else
+ DrawLevelElementAnimationIfNeeded(x, y, element);
+#endif
+ PlayLevelSoundAction(x, y, ACTION_WAITING);
+ }
+ else if (element == EL_SP_ELECTRON)
+ DrawLevelElementAnimationIfNeeded(x, y, element);
+ else if (element == EL_DRAGON)
+ {
+ int i;
+ int dir = MovDir[x][y];
+ int dx = (dir == MV_LEFT ? -1 : dir == MV_RIGHT ? +1 : 0);
+ int dy = (dir == MV_UP ? -1 : dir == MV_DOWN ? +1 : 0);
+ int graphic = (dir == MV_LEFT ? IMG_FLAMES_1_LEFT :
+ 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]);
+
+#if 0
+ printf("::: %d, %d\n", GfxAction[x][y], GfxFrame[x][y]);
+#endif
+
+ GfxAction[x][y] = ACTION_ATTACKING;
+
+ if (IS_PLAYER(x, y))
+ DrawPlayerField(x, y);
+ else
+ DrawLevelField(x, y);
+
+ PlayLevelSoundActionIfLoop(x, y, ACTION_ATTACKING);
+
+ for (i = 1; i <= 3; i++)
+ {
+ int xx = x + i * dx;
+ int yy = y + i * dy;
+ int sx = SCREENX(xx);
+ int sy = SCREENY(yy);
+ int flame_graphic = graphic + (i - 1);
+
+ if (!IN_LEV_FIELD(xx, yy) || IS_DRAGONFIRE_PROOF(Feld[xx][yy]))
+ break;
+
+ if (MovDelay[x][y])
+ {
+ int flamed = MovingOrBlocked2Element(xx, yy);
+
+ if (IS_CLASSIC_ENEMY(flamed) || CAN_EXPLODE_BY_FIRE(flamed))
+ Bang(xx, yy);
+ else
+ RemoveMovingField(xx, yy);
+
+ Feld[xx][yy] = EL_FLAMES;
+ if (IN_SCR_FIELD(sx, sy))
+ {
+ DrawLevelFieldCrumbledSand(xx, yy);
+ DrawGraphic(sx, sy, flame_graphic, frame);
+ }
+ }
+ else
+ {
+ if (Feld[xx][yy] == EL_FLAMES)
+ Feld[xx][yy] = EL_EMPTY;
+ DrawLevelField(xx, yy);
+ }
+ }
+ }
+
+ if (MovDelay[x][y]) /* element still has to wait some time */
+ {
+ PlayLevelSoundAction(x, y, ACTION_WAITING);
+
+ return;
+ }
+
+#if 0
+ /* special case of "moving" animation of waiting elements (FIX THIS !!!);
+ for all other elements GfxAction will be set by InitMovingField() */
+ if (element == EL_BD_BUTTERFLY || element == EL_BD_FIREFLY)
+ GfxAction[x][y] = ACTION_MOVING;
+#endif
+ }
+
+ /* now make next step */
+
+ Moving2Blocked(x, y, &newx, &newy); /* get next screen position */
+
+ if (DONT_COLLIDE_WITH(element) &&
+ IN_LEV_FIELD(newx, newy) && IS_PLAYER(newx, newy) &&
+ !PLAYER_PROTECTED(newx, newy))
+ {
+#if 1
+ TestIfBadThingRunsIntoHero(x, y, MovDir[x][y]);
+ return;
+#else
+ /* player killed by element which is deadly when colliding with */
+ MovDir[x][y] = 0;
+ KillHero(PLAYERINFO(newx, newy));
+ return;
+#endif
+
+ }
+ else if ((element == EL_PENGUIN ||
+ element == EL_ROBOT ||
+ element == EL_SATELLITE ||
+ element == EL_BALLOON ||
+ IS_CUSTOM_ELEMENT(element)) &&
+ IN_LEV_FIELD(newx, newy) &&
+ MovDir[x][y] == MV_DOWN && Feld[newx][newy] == EL_ACID)
+ {
+ SplashAcid(x, y);
+ Store[x][y] = EL_ACID;
+ }
+ else if (element == EL_PENGUIN && IN_LEV_FIELD(newx, newy))
+ {
+ if (Feld[newx][newy] == EL_EXIT_OPEN)
+ {
+ Feld[x][y] = EL_EMPTY;
+ DrawLevelField(x, y);
+
+ PlayLevelSound(newx, newy, SND_PENGUIN_PASSING);
+ if (IN_SCR_FIELD(SCREENX(newx), SCREENY(newy)))
+ DrawGraphicThruMask(SCREENX(newx),SCREENY(newy), el2img(element), 0);
+
+ local_player->friends_still_needed--;
+ if (!local_player->friends_still_needed &&
+ !local_player->GameOver && AllPlayersGone)
+ local_player->LevelSolved = local_player->GameOver = TRUE;
+
+ return;
+ }
+ else if (IS_FOOD_PENGUIN(Feld[newx][newy]))
+ {
+ if (DigField(local_player, newx, newy, 0, 0, DF_DIG) == MF_MOVING)
+ DrawLevelField(newx, newy);
+ else
+ GfxDir[x][y] = MovDir[x][y] = MV_NO_MOVING;
+ }
+ else if (!IS_FREE(newx, newy))
+ {
+ GfxAction[x][y] = ACTION_WAITING;
+
+ if (IS_PLAYER(x, y))
+ DrawPlayerField(x, y);
+ else
+ DrawLevelField(x, y);
+ return;
+ }
+ }
+ else if (element == EL_PIG && IN_LEV_FIELD(newx, newy))
+ {
+ if (IS_FOOD_PIG(Feld[newx][newy]))
+ {
+ if (IS_MOVING(newx, newy))
+ RemoveMovingField(newx, newy);
+ else
+ {
+ Feld[newx][newy] = EL_EMPTY;
+ DrawLevelField(newx, newy);
+ }
+
+ PlayLevelSound(x, y, SND_PIG_DIGGING);
+ }
+ else if (!IS_FREE(newx, newy))
+ {
+ if (IS_PLAYER(x, y))
+ DrawPlayerField(x, y);
+ else
+ DrawLevelField(x, y);
+ return;
+ }
+ }
+ else if ((move_pattern & MV_MAZE_RUNNER_STYLE ||
+ element == EL_MAZE_RUNNER) && IN_LEV_FIELD(newx, newy))
+ {
+ if (IS_FOOD_DARK_YAMYAM(Feld[newx][newy]))
+ {
+ if (IS_MOVING(newx, newy))
+ RemoveMovingField(newx, newy);
+ else
+ {
+ Feld[newx][newy] = EL_EMPTY;
+ DrawLevelField(newx, newy);
+ }
+
+ PlayLevelSound(x, y, SND_DARK_YAMYAM_DIGGING);
+ }
+ else if (!IS_FREE(newx, newy))
+ {
+#if 0
+ if (IS_PLAYER(x, y))
+ DrawPlayerField(x, y);
+ else
+ DrawLevelField(x, y);
+#endif
+ return;
+ }
+
+ RunnerVisit[x][y] = FrameCounter;
+ PlayerVisit[x][y] /= 8; /* expire player visit path */
+ }
+ else if (element == EL_DRAGON && IN_LEV_FIELD(newx, newy))
+ {
+ if (!IS_FREE(newx, newy))
+ {
+ if (IS_PLAYER(x, y))
+ DrawPlayerField(x, y);
+ else
+ DrawLevelField(x, y);
+
+ return;
+ }
+ else
+ {
+ boolean wanna_flame = !RND(10);
+ int dx = newx - x, dy = newy - y;
+ int newx1 = newx + 1 * dx, newy1 = newy + 1 * dy;
+ int newx2 = newx + 2 * dx, newy2 = newy + 2 * dy;
+ int element1 = (IN_LEV_FIELD(newx1, newy1) ?
+ MovingOrBlocked2Element(newx1, newy1) : EL_STEELWALL);
+ int element2 = (IN_LEV_FIELD(newx2, newy2) ?
+ MovingOrBlocked2Element(newx2, newy2) : EL_STEELWALL);
+
+ if ((wanna_flame ||
+ IS_CLASSIC_ENEMY(element1) ||
+ IS_CLASSIC_ENEMY(element2)) &&
+ element1 != EL_DRAGON && element2 != EL_DRAGON &&
+ element1 != EL_FLAMES && element2 != EL_FLAMES)
+ {
+#if 1
+ ResetGfxAnimation(x, y);
+ GfxAction[x][y] = ACTION_ATTACKING;
+#endif
+
+ if (IS_PLAYER(x, y))
+ DrawPlayerField(x, y);
+ else
+ DrawLevelField(x, y);
+
+ PlayLevelSound(x, y, SND_DRAGON_ATTACKING);
+
+ MovDelay[x][y] = 50;
+
+ Feld[newx][newy] = EL_FLAMES;
+ if (IN_LEV_FIELD(newx1, newy1) && Feld[newx1][newy1] == EL_EMPTY)
+ Feld[newx1][newy1] = EL_FLAMES;
+ if (IN_LEV_FIELD(newx2, newy2) && Feld[newx2][newy2] == EL_EMPTY)
+ Feld[newx2][newy2] = EL_FLAMES;
+
+ return;
+ }
+ }
+ }
+ else if (element == EL_YAMYAM && IN_LEV_FIELD(newx, newy) &&
+ Feld[newx][newy] == EL_DIAMOND)
+ {
+ if (IS_MOVING(newx, newy))
+ RemoveMovingField(newx, newy);
+ else
+ {
+ Feld[newx][newy] = EL_EMPTY;
+ DrawLevelField(newx, newy);
+ }
+
+ PlayLevelSound(x, y, SND_YAMYAM_DIGGING);
+ }
+ else if (element == EL_DARK_YAMYAM && IN_LEV_FIELD(newx, newy) &&
+ IS_FOOD_DARK_YAMYAM(Feld[newx][newy]))
+ {
+ if (AmoebaNr[newx][newy])
+ {
+ AmoebaCnt2[AmoebaNr[newx][newy]]--;
+ if (Feld[newx][newy] == EL_AMOEBA_FULL ||
+ Feld[newx][newy] == EL_BD_AMOEBA)
+ AmoebaCnt[AmoebaNr[newx][newy]]--;
+ }
+
+ if (IS_MOVING(newx, newy))
+ RemoveMovingField(newx, newy);
+ else
+ {
+ Feld[newx][newy] = EL_EMPTY;
+ DrawLevelField(newx, newy);
+ }
+
+ PlayLevelSound(x, y, SND_DARK_YAMYAM_DIGGING);
+ }
+ else if ((element == EL_PACMAN || element == EL_MOLE)
+ && IN_LEV_FIELD(newx, newy) && IS_AMOEBOID(Feld[newx][newy]))
+ {
+ if (AmoebaNr[newx][newy])
+ {
+ AmoebaCnt2[AmoebaNr[newx][newy]]--;
+ if (Feld[newx][newy] == EL_AMOEBA_FULL ||
+ Feld[newx][newy] == EL_BD_AMOEBA)
+ AmoebaCnt[AmoebaNr[newx][newy]]--;
+ }
+
+ if (element == EL_MOLE)
+ {
+ Feld[newx][newy] = EL_AMOEBA_SHRINKING;
+ PlayLevelSound(x, y, SND_MOLE_DIGGING);
+
+ ResetGfxAnimation(x, y);
+ GfxAction[x][y] = ACTION_DIGGING;
+ DrawLevelField(x, y);
+
+ MovDelay[newx][newy] = 0; /* start amoeba shrinking delay */
+ return; /* wait for shrinking amoeba */
+ }
+ else /* element == EL_PACMAN */
+ {
+ Feld[newx][newy] = EL_EMPTY;
+ DrawLevelField(newx, newy);
+ PlayLevelSound(x, y, SND_PACMAN_DIGGING);
+ }
+ }
+ else if (element == EL_MOLE && IN_LEV_FIELD(newx, newy) &&
+ (Feld[newx][newy] == EL_AMOEBA_SHRINKING ||
+ (Feld[newx][newy] == EL_EMPTY && Stop[newx][newy])))
+ {
+ /* wait for shrinking amoeba to completely disappear */
+ return;
+ }
+ else if (!IN_LEV_FIELD(newx, newy) || !IS_FREE(newx, newy))
+ {
+ /* object was running against a wall */
+
+ TurnRound(x, y);
+
+#if 1
+ if (GFX_ELEMENT(element) != EL_SAND) /* !!! FIX THIS (crumble) !!! */
+ DrawLevelElementAnimation(x, y, element);
+#else
+ if (element == EL_BUG ||
+ element == EL_SPACESHIP ||
+ element == EL_SP_SNIKSNAK)
+ DrawLevelField(x, y);
+ else if (element == EL_MOLE)
+ DrawLevelField(x, y);
+ else if (element == EL_BD_BUTTERFLY ||
+ element == EL_BD_FIREFLY)
+ DrawLevelElementAnimationIfNeeded(x, y, element);
+ else if (element == EL_SATELLITE)
+ DrawLevelElementAnimationIfNeeded(x, y, element);
+ else if (element == EL_SP_ELECTRON)
+ DrawLevelElementAnimationIfNeeded(x, y, element);
+#endif
+
+ if (DONT_TOUCH(element))
+ TestIfBadThingTouchesHero(x, y);
+
+#if 0
+ PlayLevelSoundAction(x, y, ACTION_WAITING);
+#endif
+
+ return;
+ }
+
+ InitMovingField(x, y, MovDir[x][y]);
+
+ PlayLevelSoundAction(x, y, ACTION_MOVING);
+ }
+
+ if (MovDir[x][y])
+ ContinueMoving(x, y);
+}
+
+void ContinueMoving(int x, int y)
+{
+ int element = Feld[x][y];
+ int direction = MovDir[x][y];
+ int dx = (direction == MV_LEFT ? -1 : direction == MV_RIGHT ? +1 : 0);
+ int dy = (direction == MV_UP ? -1 : direction == MV_DOWN ? +1 : 0);
+ int newx = x + dx, newy = y + dy;
+ int nextx = newx + dx, nexty = newy + dy;
+ boolean pushed = Pushed[x][y];
+
+ MovPos[x][y] += getElementMoveStepsize(x, y);
+
+ if (pushed) /* special case: moving object pushed by player */
+ MovPos[x][y] = SIGN(MovPos[x][y]) * (TILEX - ABS(PLAYERINFO(x,y)->MovPos));
+
+ if (ABS(MovPos[x][y]) < TILEX)
+ {
+ DrawLevelField(x, y);
+
+ return; /* element is still moving */
+ }
+
+ /* element reached destination field */
+
+ Feld[x][y] = EL_EMPTY;
+ Feld[newx][newy] = element;
+ MovPos[x][y] = 0; /* force "not moving" for "crumbled sand" */
+
+ if (element == EL_MOLE)
+ {
+ Feld[x][y] = EL_SAND;
+
+ DrawLevelFieldCrumbledSandNeighbours(x, y);
+ }
+ else if (element == EL_QUICKSAND_FILLING)
+ {
+ element = Feld[newx][newy] = get_next_element(element);
+ Store[newx][newy] = Store[x][y];
+ }
+ else if (element == EL_QUICKSAND_EMPTYING)
+ {
+ Feld[x][y] = get_next_element(element);
+ element = Feld[newx][newy] = Store[x][y];
+ }
+ else if (element == EL_MAGIC_WALL_FILLING)
+ {
+ element = Feld[newx][newy] = get_next_element(element);
+ if (!game.magic_wall_active)
+ element = Feld[newx][newy] = EL_MAGIC_WALL_DEAD;
+ Store[newx][newy] = Store[x][y];
+ }
+ else if (element == EL_MAGIC_WALL_EMPTYING)
+ {
+ Feld[x][y] = get_next_element(element);
+ if (!game.magic_wall_active)
+ Feld[x][y] = EL_MAGIC_WALL_DEAD;
+ element = Feld[newx][newy] = Store[x][y];
+ }
+ else if (element == EL_BD_MAGIC_WALL_FILLING)
+ {
+ element = Feld[newx][newy] = get_next_element(element);
+ if (!game.magic_wall_active)
+ element = Feld[newx][newy] = EL_BD_MAGIC_WALL_DEAD;
+ Store[newx][newy] = Store[x][y];
+ }
+ else if (element == EL_BD_MAGIC_WALL_EMPTYING)
+ {
+ Feld[x][y] = get_next_element(element);
+ if (!game.magic_wall_active)
+ Feld[x][y] = EL_BD_MAGIC_WALL_DEAD;
+ element = Feld[newx][newy] = Store[x][y];
+ }
+ else if (element == EL_AMOEBA_DROPPING)
+ {
+ Feld[x][y] = get_next_element(element);
+ element = Feld[newx][newy] = Store[x][y];
+ }
+ else if (element == EL_SOKOBAN_OBJECT)
+ {
+ if (Back[x][y])
+ Feld[x][y] = Back[x][y];
+
+ if (Back[newx][newy])
+ Feld[newx][newy] = EL_SOKOBAN_FIELD_FULL;
+
+ Back[x][y] = Back[newx][newy] = 0;
+ }
+ else if (Store[x][y] == EL_ACID)
+ {
+ element = Feld[newx][newy] = EL_ACID;
+ }
+
+ Store[x][y] = 0;
+ MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
+ MovDelay[newx][newy] = 0;
+
+ /* copy element change control values to new field */
+ ChangeDelay[newx][newy] = ChangeDelay[x][y];
+ ChangePage[newx][newy] = ChangePage[x][y];
+ Changed[newx][newy] = Changed[x][y];
+ ChangeEvent[newx][newy] = ChangeEvent[x][y];
+
+ ChangeDelay[x][y] = 0;
+ ChangePage[x][y] = -1;
+ Changed[x][y] = CE_BITMASK_DEFAULT;
+ ChangeEvent[x][y] = CE_BITMASK_DEFAULT;
+
+ /* copy animation control values to new field */
+ GfxFrame[newx][newy] = GfxFrame[x][y];
+ GfxRandom[newx][newy] = GfxRandom[x][y]; /* keep same random value */
+ GfxAction[newx][newy] = GfxAction[x][y]; /* keep action one frame */
+ GfxDir[newx][newy] = GfxDir[x][y]; /* keep element direction */
+
+ Pushed[x][y] = Pushed[newx][newy] = FALSE;
+
+ ResetGfxAnimation(x, y); /* reset animation values for old field */
+
+#if 0
+ /* 2.1.1 (does not work correctly for spring) */
+ if (!CAN_MOVE(element))
+ MovDir[newx][newy] = 0;
+#else
+
+#if 0
+ /* (does not work for falling objects that slide horizontally) */
+ if (CAN_FALL(element) && MovDir[newx][newy] == MV_DOWN)
+ MovDir[newx][newy] = 0;
+#else
+ /*
+ if (!CAN_MOVE(element) ||
+ (element == EL_SPRING && MovDir[newx][newy] == MV_DOWN))
+ MovDir[newx][newy] = 0;
+ */
+
+ if (!CAN_MOVE(element) ||
+ (CAN_FALL(element) && direction == MV_DOWN))
+ GfxDir[x][y] = MovDir[newx][newy] = 0;
+
+#endif
+#endif
+
+ DrawLevelField(x, y);
+ DrawLevelField(newx, newy);
+
+ Stop[newx][newy] = TRUE; /* ignore this element until the next frame */
+
+ /* prevent pushed element from moving on in pushed direction */
+ if (pushed && CAN_MOVE(element) &&
+ element_info[element].move_pattern & MV_ANY_DIRECTION &&
+ !(element_info[element].move_pattern & direction))
+ TurnRound(newx, newy);
+
+ if (!pushed) /* special case: moving object pushed by player */
+ {
+ WasJustMoving[newx][newy] = 3;
+
+ if (CAN_FALL(element) && direction == MV_DOWN)
+ WasJustFalling[newx][newy] = 3;
+ }
+
+ if (DONT_TOUCH(element)) /* object may be nasty to player or others */
+ {
+ TestIfBadThingTouchesHero(newx, newy);
+ TestIfBadThingTouchesFriend(newx, newy);
+
+ if (!IS_CUSTOM_ELEMENT(element))
+ TestIfBadThingTouchesOtherBadThing(newx, newy);
+ }
+ else if (element == EL_PENGUIN)
+ TestIfFriendTouchesBadThing(newx, newy);
+
+ if (CAN_FALL(element) && direction == MV_DOWN &&
+ (newy == lev_fieldy - 1 || !IS_FREE(x, newy + 1)))
+ Impact(x, newy);
+
+#if 1
+ TestIfElementTouchesCustomElement(x, y); /* for empty space */
+#endif
+
+#if 0
+ if (ChangePage[newx][newy] != -1) /* delayed change */
+ ChangeElement(newx, newy, ChangePage[newx][newy]);
+#endif
+
+ if (!IN_LEV_FIELD(nextx, nexty) || !IS_FREE(nextx, nexty))
+ {
+ /* !!! fix side (direction) orientation here and elsewhere !!! */
+ CheckElementSideChange(newx, newy, Feld[newx][newy],
+ direction, CE_COLLISION_ACTIVE, -1);
+
+#if 0
+ if (IN_LEV_FIELD(nextx, nexty))
+ {
+ static int opposite_directions[] =
+ {
+ MV_RIGHT,
+ MV_LEFT,
+ MV_DOWN,
+ MV_UP
+ };
+ int move_dir_bit = MV_DIR_BIT(direction);
+ int opposite_direction = opposite_directions[move_dir_bit];
+ int hitting_side = direction;
+ int touched_side = opposite_direction;
+ int hitting_element = Feld[newx][newy];
+ int touched_element = MovingOrBlocked2Element(nextx, nexty);
+ boolean object_hit = (!IS_MOVING(nextx, nexty) ||
+ MovDir[nextx][nexty] != direction ||
+ ABS(MovPos[nextx][nexty]) <= TILEY / 2);
+
+ if (object_hit)
+ {
+ int i;
+
+ CheckElementSideChange(nextx, nexty, Feld[nextx][nexty],
+ opposite_direction, CE_COLLISION_PASSIVE, -1);
+
+ if (IS_CUSTOM_ELEMENT(hitting_element) &&
+ HAS_ANY_CHANGE_EVENT(hitting_element, CE_OTHER_IS_COLL_ACTIVE))
+ {
+ for (i = 0; i < element_info[hitting_element].num_change_pages; i++)
+ {
+ struct ElementChangeInfo *change =
+ &element_info[hitting_element].change_page[i];
+
+ if (change->can_change &&
+ change->events & CH_EVENT_BIT(CE_OTHER_IS_COLL_ACTIVE) &&
+ change->sides & touched_side &&
+ change->trigger_element == touched_element)
+ {
+ CheckElementSideChange(newx, newy, hitting_element,
+ CH_SIDE_ANY, CE_OTHER_IS_COLL_ACTIVE, i);
+ break;
+ }
+ }
+ }
+
+ if (IS_CUSTOM_ELEMENT(touched_element) &&
+ HAS_ANY_CHANGE_EVENT(touched_element, CE_OTHER_IS_COLL_PASSIVE))
+ {
+ for (i = 0; i < element_info[touched_element].num_change_pages; i++)
+ {
+ struct ElementChangeInfo *change =
+ &element_info[touched_element].change_page[i];
+
+ if (change->can_change &&
+ change->events & CH_EVENT_BIT(CE_OTHER_IS_COLL_PASSIVE) &&
+ change->sides & hitting_side &&
+ change->trigger_element == hitting_element)
+ {
+ CheckElementSideChange(nextx, nexty, touched_element,
+ CH_SIDE_ANY, CE_OTHER_IS_COLL_PASSIVE, i);
+ break;
+ }
+ }
+ }
+ }
+ }
+#endif
+ }
+
+ TestIfPlayerTouchesCustomElement(newx, newy);
+ TestIfElementTouchesCustomElement(newx, newy);
+}
+
+int AmoebeNachbarNr(int ax, int ay)
+{
+ int i;
+ int element = Feld[ax][ay];
+ int group_nr = 0;
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+
+ for (i = 0; i < 4; i++)
+ {
+ int x = ax + xy[i][0];
+ int y = ay + xy[i][1];
+
+ if (!IN_LEV_FIELD(x, y))
+ continue;
+
+ if (Feld[x][y] == element && AmoebaNr[x][y] > 0)
+ group_nr = AmoebaNr[x][y];
+ }
+
+ return group_nr;
+}
+
+void AmoebenVereinigen(int ax, int ay)
+{
+ int i, x, y, xx, yy;
+ int new_group_nr = AmoebaNr[ax][ay];
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+
+ if (new_group_nr == 0)
+ return;
+
+ for (i = 0; i < 4; i++)
+ {
+ x = ax + xy[i][0];
+ y = ay + xy[i][1];
+
+ if (!IN_LEV_FIELD(x, y))
+ continue;
+
+ if ((Feld[x][y] == EL_AMOEBA_FULL ||
+ Feld[x][y] == EL_BD_AMOEBA ||
+ Feld[x][y] == EL_AMOEBA_DEAD) &&
+ AmoebaNr[x][y] != new_group_nr)
+ {
+ int old_group_nr = AmoebaNr[x][y];
+
+ if (old_group_nr == 0)
+ return;
+
+ AmoebaCnt[new_group_nr] += AmoebaCnt[old_group_nr];
+ AmoebaCnt[old_group_nr] = 0;
+ AmoebaCnt2[new_group_nr] += AmoebaCnt2[old_group_nr];
+ AmoebaCnt2[old_group_nr] = 0;
+
+ for (yy = 0; yy < lev_fieldy; yy++)
+ {
+ for (xx = 0; xx < lev_fieldx; xx++)
+ {
+ if (AmoebaNr[xx][yy] == old_group_nr)
+ AmoebaNr[xx][yy] = new_group_nr;
+ }
+ }
+ }
+ }
+}
+
+void AmoebeUmwandeln(int ax, int ay)
+{
+ int i, x, y;
+
+ if (Feld[ax][ay] == EL_AMOEBA_DEAD)
+ {
+ int group_nr = AmoebaNr[ax][ay];
+
+#ifdef DEBUG
+ if (group_nr == 0)
+ {
+ printf("AmoebeUmwandeln(): ax = %d, ay = %d\n", ax, ay);
+ printf("AmoebeUmwandeln(): This should never happen!\n");
+ return;
+ }
+#endif
+
+ for (y = 0; y < lev_fieldy; y++)
+ {
+ for (x = 0; x < lev_fieldx; x++)
+ {
+ if (Feld[x][y] == EL_AMOEBA_DEAD && AmoebaNr[x][y] == group_nr)
+ {
+ AmoebaNr[x][y] = 0;
+ Feld[x][y] = EL_AMOEBA_TO_DIAMOND;
+ }
+ }
+ }
+ PlayLevelSound(ax, ay, (IS_GEM(level.amoeba_content) ?
+ SND_AMOEBA_TURNING_TO_GEM :
+ SND_AMOEBA_TURNING_TO_ROCK));
+ Bang(ax, ay);
+ }
+ else
+ {
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+
+ for (i = 0; i < 4; i++)
+ {
+ x = ax + xy[i][0];
+ y = ay + xy[i][1];
+
+ if (!IN_LEV_FIELD(x, y))
+ continue;
+
+ if (Feld[x][y] == EL_AMOEBA_TO_DIAMOND)
+ {
+ PlayLevelSound(x, y, (IS_GEM(level.amoeba_content) ?
+ SND_AMOEBA_TURNING_TO_GEM :
+ SND_AMOEBA_TURNING_TO_ROCK));
+ Bang(x, y);
+ }
+ }
+ }
+}
+
+void AmoebeUmwandelnBD(int ax, int ay, int new_element)
+{
+ int x, y;
+ int group_nr = AmoebaNr[ax][ay];
+ boolean done = FALSE;
+
+#ifdef DEBUG
+ if (group_nr == 0)
+ {
+ printf("AmoebeUmwandelnBD(): ax = %d, ay = %d\n", ax, ay);
+ printf("AmoebeUmwandelnBD(): This should never happen!\n");
+ return;
+ }
+#endif
+
+ for (y = 0; y < lev_fieldy; y++)
+ {
+ for (x = 0; x < lev_fieldx; x++)
+ {
+ if (AmoebaNr[x][y] == group_nr &&
+ (Feld[x][y] == EL_AMOEBA_DEAD ||
+ Feld[x][y] == EL_BD_AMOEBA ||
+ Feld[x][y] == EL_AMOEBA_GROWING))
+ {
+ AmoebaNr[x][y] = 0;
+ Feld[x][y] = new_element;
+ InitField(x, y, FALSE);
+ DrawLevelField(x, y);
+ done = TRUE;
+ }
+ }
+ }
+
+ if (done)
+ PlayLevelSound(ax, ay, (new_element == EL_BD_ROCK ?
+ SND_BD_AMOEBA_TURNING_TO_ROCK :
+ SND_BD_AMOEBA_TURNING_TO_GEM));
+}
+
+void AmoebeWaechst(int x, int y)
+{
+ static unsigned long sound_delay = 0;
+ static unsigned long sound_delay_value = 0;
+
+ if (!MovDelay[x][y]) /* start new growing cycle */
+ {
+ MovDelay[x][y] = 7;
+
+ if (DelayReached(&sound_delay, sound_delay_value))
+ {
+#if 1
+ PlayLevelSoundElementAction(x, y, Store[x][y], ACTION_GROWING);
+#else
+ if (Store[x][y] == EL_BD_AMOEBA)
+ PlayLevelSound(x, y, SND_BD_AMOEBA_GROWING);
+ else
+ PlayLevelSound(x, y, SND_AMOEBA_GROWING);
+#endif
+ sound_delay_value = 30;
+ }
+ }
+
+ if (MovDelay[x][y]) /* wait some time before growing bigger */
+ {
+ MovDelay[x][y]--;
+ if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+ {
+ int frame = getGraphicAnimationFrame(IMG_AMOEBA_GROWING,
+ 6 - MovDelay[x][y]);
+
+ DrawGraphic(SCREENX(x), SCREENY(y), IMG_AMOEBA_GROWING, frame);
+ }
+
+ if (!MovDelay[x][y])
+ {
+ Feld[x][y] = Store[x][y];
+ Store[x][y] = 0;
+ DrawLevelField(x, y);
+ }
+ }
+}
+
+void AmoebaDisappearing(int x, int y)
+{
+ static unsigned long sound_delay = 0;
+ static unsigned long sound_delay_value = 0;
+
+ if (!MovDelay[x][y]) /* start new shrinking cycle */
+ {
+ MovDelay[x][y] = 7;
+
+ if (DelayReached(&sound_delay, sound_delay_value))
+ sound_delay_value = 30;
+ }
+
+ if (MovDelay[x][y]) /* wait some time before shrinking */
+ {
+ MovDelay[x][y]--;
+ if (MovDelay[x][y]/2 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+ {
+ int frame = getGraphicAnimationFrame(IMG_AMOEBA_SHRINKING,
+ 6 - MovDelay[x][y]);
+
+ DrawGraphic(SCREENX(x), SCREENY(y), IMG_AMOEBA_SHRINKING, frame);
+ }
+
+ if (!MovDelay[x][y])
+ {
+ Feld[x][y] = EL_EMPTY;
+ DrawLevelField(x, y);
+
+ /* don't let mole enter this field in this cycle;
+ (give priority to objects falling to this field from above) */
+ Stop[x][y] = TRUE;
+ }
+ }
+}
+
+void AmoebeAbleger(int ax, int ay)
+{
+ int i;
+ int element = Feld[ax][ay];
+ int graphic = el2img(element);
+ int newax = ax, neway = ay;
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+
+ if (!level.amoeba_speed)
+ {
+ Feld[ax][ay] = EL_AMOEBA_DEAD;
+ DrawLevelField(ax, ay);
+ return;
+ }
+
+ if (IS_ANIMATED(graphic))
+ DrawLevelGraphicAnimationIfNeeded(ax, ay, graphic);
+
+ if (!MovDelay[ax][ay]) /* start making new amoeba field */
+ MovDelay[ax][ay] = RND(FRAMES_PER_SECOND * 25 / (1 + level.amoeba_speed));
+
+ if (MovDelay[ax][ay]) /* wait some time before making new amoeba */
+ {
+ MovDelay[ax][ay]--;
+ if (MovDelay[ax][ay])
+ return;
+ }
+
+ if (element == EL_AMOEBA_WET) /* object is an acid / amoeba drop */
+ {
+ int start = RND(4);
+ int x = ax + xy[start][0];
+ int y = ay + xy[start][1];
+
+ if (!IN_LEV_FIELD(x, y))
+ return;
+
+ /* !!! extend EL_SAND to anything diggable (but maybe not SP_BASE) !!! */
+ if (IS_FREE(x, y) ||
+ Feld[x][y] == EL_SAND || Feld[x][y] == EL_QUICKSAND_EMPTY)
+ {
+ newax = x;
+ neway = y;
+ }
+
+ if (newax == ax && neway == ay)
+ return;
+ }
+ else /* normal or "filled" (BD style) amoeba */
+ {
+ int start = RND(4);
+ boolean waiting_for_player = FALSE;
+
+ for (i = 0; i < 4; i++)
+ {
+ int j = (start + i) % 4;
+ int x = ax + xy[j][0];
+ int y = ay + xy[j][1];
+
+ if (!IN_LEV_FIELD(x, y))
+ continue;
+
+ /* !!! extend EL_SAND to anything diggable (but maybe not SP_BASE) !!! */
+ if (IS_FREE(x, y) ||
+ Feld[x][y] == EL_SAND || Feld[x][y] == EL_QUICKSAND_EMPTY)
+ {
+ newax = x;
+ neway = y;
+ break;
+ }
+ else if (IS_PLAYER(x, y))
+ waiting_for_player = TRUE;
+ }
+
+ if (newax == ax && neway == ay) /* amoeba cannot grow */
+ {
+ if (i == 4 && (!waiting_for_player || game.emulation == EMU_BOULDERDASH))
+ {
+ Feld[ax][ay] = EL_AMOEBA_DEAD;
+ DrawLevelField(ax, ay);
+ AmoebaCnt[AmoebaNr[ax][ay]]--;
+
+ if (AmoebaCnt[AmoebaNr[ax][ay]] <= 0) /* amoeba is completely dead */
+ {
+ if (element == EL_AMOEBA_FULL)
+ AmoebeUmwandeln(ax, ay);
+ else if (element == EL_BD_AMOEBA)
+ AmoebeUmwandelnBD(ax, ay, level.amoeba_content);
+ }
+ }
+ return;
+ }
+ else if (element == EL_AMOEBA_FULL || element == EL_BD_AMOEBA)
+ {
+ /* amoeba gets larger by growing in some direction */
+
+ int new_group_nr = AmoebaNr[ax][ay];
+
+#ifdef DEBUG
+ if (new_group_nr == 0)
+ {
+ printf("AmoebeAbleger(): newax = %d, neway = %d\n", newax, neway);
+ printf("AmoebeAbleger(): This should never happen!\n");
+ return;
+ }
+#endif
+
+ AmoebaNr[newax][neway] = new_group_nr;
+ AmoebaCnt[new_group_nr]++;
+ AmoebaCnt2[new_group_nr]++;
+
+ /* if amoeba touches other amoeba(s) after growing, unify them */
+ AmoebenVereinigen(newax, neway);
+
+ if (element == EL_BD_AMOEBA && AmoebaCnt2[new_group_nr] >= 200)
+ {
+ AmoebeUmwandelnBD(newax, neway, EL_BD_ROCK);
+ return;
+ }
+ }
+ }
+
+ if (element != EL_AMOEBA_WET || neway < ay || !IS_FREE(newax, neway) ||
+ (neway == lev_fieldy - 1 && newax != ax))
+ {
+ Feld[newax][neway] = EL_AMOEBA_GROWING; /* creation of new amoeba */
+ Store[newax][neway] = element;
+ }
+ else if (neway == ay)
+ {
+ Feld[newax][neway] = EL_AMOEBA_DROP; /* drop left/right of amoeba */
+#if 1
+ PlayLevelSoundAction(newax, neway, ACTION_GROWING);
+#else
+ PlayLevelSound(newax, neway, SND_AMOEBA_GROWING);
+#endif
+ }
+ else
+ {
+ InitMovingField(ax, ay, MV_DOWN); /* drop dripping from amoeba */
+ Feld[ax][ay] = EL_AMOEBA_DROPPING;
+ Store[ax][ay] = EL_AMOEBA_DROP;
+ ContinueMoving(ax, ay);
+ return;
+ }
+
+ DrawLevelField(newax, neway);
+}
+
+void Life(int ax, int ay)
+{
+ int x1, y1, x2, y2;
+ static int life[4] = { 2, 3, 3, 3 }; /* parameters for "game of life" */
+ int life_time = 40;
+ int element = Feld[ax][ay];
+ int graphic = el2img(element);
+ boolean changed = FALSE;
+
+ if (IS_ANIMATED(graphic))
+ DrawLevelGraphicAnimationIfNeeded(ax, ay, graphic);
+
+ if (Stop[ax][ay])
+ return;
+
+ if (!MovDelay[ax][ay]) /* start new "game of life" cycle */
+ MovDelay[ax][ay] = life_time;
+
+ if (MovDelay[ax][ay]) /* wait some time before next cycle */
+ {
+ MovDelay[ax][ay]--;
+ if (MovDelay[ax][ay])
+ return;
+ }
+
+ for (y1 = -1; y1 < 2; y1++) for (x1 = -1; x1 < 2; x1++)
+ {
+ int xx = ax+x1, yy = ay+y1;
+ int nachbarn = 0;
+
+ if (!IN_LEV_FIELD(xx, yy))
+ continue;
+
+ for (y2 = -1; y2 < 2; y2++) for (x2 = -1; x2 < 2; x2++)
+ {
+ int x = xx+x2, y = yy+y2;
+
+ if (!IN_LEV_FIELD(x, y) || (x == xx && y == yy))
+ continue;
+
+ if (((Feld[x][y] == element ||
+ (element == EL_GAME_OF_LIFE && IS_PLAYER(x, y))) &&
+ !Stop[x][y]) ||
+ (IS_FREE(x, y) && Stop[x][y]))
+ nachbarn++;
+ }
+
+ if (xx == ax && yy == ay) /* field in the middle */
+ {
+ if (nachbarn < life[0] || nachbarn > life[1])
+ {
+ Feld[xx][yy] = EL_EMPTY;
+ if (!Stop[xx][yy])
+ DrawLevelField(xx, yy);
+ Stop[xx][yy] = TRUE;
+ changed = TRUE;
+ }
+ }
+ /* !!! extend EL_SAND to anything diggable (but maybe not SP_BASE) !!! */
+ else if (IS_FREE(xx, yy) || Feld[xx][yy] == EL_SAND)
+ { /* free border field */
+ if (nachbarn >= life[2] && nachbarn <= life[3])
+ {
+ Feld[xx][yy] = element;
+ MovDelay[xx][yy] = (element == EL_GAME_OF_LIFE ? 0 : life_time-1);
+ if (!Stop[xx][yy])
+ DrawLevelField(xx, yy);
+ Stop[xx][yy] = TRUE;
+ changed = TRUE;
+ }
+ }
+ }
+
+ if (changed)
+ PlayLevelSound(ax, ay, element == EL_BIOMAZE ? SND_BIOMAZE_GROWING :
+ SND_GAME_OF_LIFE_GROWING);
+}
+
+static void InitRobotWheel(int x, int y)
+{
+ ChangeDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+}
+
+static void RunRobotWheel(int x, int y)
+{
+ PlayLevelSound(x, y, SND_ROBOT_WHEEL_ACTIVE);
+}
+
+static void StopRobotWheel(int x, int y)
+{
+ if (ZX == x && ZY == y)
+ ZX = ZY = -1;
+}
+
+static void InitTimegateWheel(int x, int y)
+{
+ ChangeDelay[x][y] = level.time_wheel * FRAMES_PER_SECOND;
+}
+
+static void RunTimegateWheel(int x, int y)
+{
+ PlayLevelSound(x, y, SND_TIMEGATE_SWITCH_ACTIVE);
+}
+
+void CheckExit(int x, int y)
+{
+ if (local_player->gems_still_needed > 0 ||
+ local_player->sokobanfields_still_needed > 0 ||
+ local_player->lights_still_needed > 0)
+ {
+ int element = Feld[x][y];
+ int graphic = el2img(element);
+
+ if (IS_ANIMATED(graphic))
+ DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
+
+ return;
+ }
+
+ if (AllPlayersGone) /* do not re-open exit door closed after last player */
+ return;
+
+ Feld[x][y] = EL_EXIT_OPENING;
+
+ PlayLevelSoundNearest(x, y, SND_CLASS_EXIT_OPENING);
+}
+
+void CheckExitSP(int x, int y)
+{
+ if (local_player->gems_still_needed > 0)
+ {
+ int element = Feld[x][y];
+ int graphic = el2img(element);
+
+ if (IS_ANIMATED(graphic))
+ DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
+
+ return;
+ }
+
+ if (AllPlayersGone) /* do not re-open exit door closed after last player */
+ return;
+
+ Feld[x][y] = EL_SP_EXIT_OPENING;
+
+ PlayLevelSoundNearest(x, y, SND_CLASS_SP_EXIT_OPENING);
+}
+
+static void CloseAllOpenTimegates()
+{
+ int x, y;
+
+ for (y = 0; y < lev_fieldy; y++)
+ {
+ for (x = 0; x < lev_fieldx; x++)
+ {
+ int element = Feld[x][y];
+
+ if (element == EL_TIMEGATE_OPEN || element == EL_TIMEGATE_OPENING)
+ {
+ Feld[x][y] = EL_TIMEGATE_CLOSING;
+#if 1
+ PlayLevelSoundAction(x, y, ACTION_CLOSING);
+#else
+ PlayLevelSound(x, y, SND_TIMEGATE_CLOSING);
+#endif
+ }
+ }
+ }
+}
+
+void EdelsteinFunkeln(int x, int y)
+{
+ if (!IN_SCR_FIELD(SCREENX(x), SCREENY(y)) || IS_MOVING(x, y))
+ return;
+
+ if (Feld[x][y] == EL_BD_DIAMOND)
+ return;
+
+ if (MovDelay[x][y] == 0) /* next animation frame */
+ MovDelay[x][y] = 11 * !SimpleRND(500);
+
+ if (MovDelay[x][y] != 0) /* wait some time before next frame */
+ {
+ MovDelay[x][y]--;
+
+ if (setup.direct_draw && MovDelay[x][y])
+ SetDrawtoField(DRAW_BUFFERED);
+
+ DrawLevelElementAnimation(x, y, Feld[x][y]);
+
+ if (MovDelay[x][y] != 0)
+ {
+ int frame = getGraphicAnimationFrame(IMG_TWINKLE_WHITE,
+ 10 - MovDelay[x][y]);
+
+ DrawGraphicThruMask(SCREENX(x), SCREENY(y), IMG_TWINKLE_WHITE, frame);
+
+ if (setup.direct_draw)
+ {
+ int dest_x, dest_y;
+
+ dest_x = FX + SCREENX(x) * TILEX;
+ dest_y = FY + SCREENY(y) * TILEY;
+
+ BlitBitmap(drawto_field, window,
+ dest_x, dest_y, TILEX, TILEY, dest_x, dest_y);
+ SetDrawtoField(DRAW_DIRECT);
+ }
+ }
+ }
+}
+
+void MauerWaechst(int x, int y)
+{
+ int delay = 6;
+
+ if (!MovDelay[x][y]) /* next animation frame */
+ MovDelay[x][y] = 3 * delay;
+
+ if (MovDelay[x][y]) /* wait some time before next frame */
+ {
+ MovDelay[x][y]--;
+
+ if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+ {
+ int graphic = el_dir2img(Feld[x][y], GfxDir[x][y]);
+ int frame = getGraphicAnimationFrame(graphic, 17 - MovDelay[x][y]);
+
+ DrawGraphic(SCREENX(x), SCREENY(y), graphic, frame);
+ }
+
+ if (!MovDelay[x][y])
+ {
+ if (MovDir[x][y] == MV_LEFT)
+ {
+ if (IN_LEV_FIELD(x - 1, y) && IS_WALL(Feld[x - 1][y]))
+ DrawLevelField(x - 1, y);
+ }
+ else if (MovDir[x][y] == MV_RIGHT)
+ {
+ if (IN_LEV_FIELD(x + 1, y) && IS_WALL(Feld[x + 1][y]))
+ DrawLevelField(x + 1, y);
+ }
+ else if (MovDir[x][y] == MV_UP)
+ {
+ if (IN_LEV_FIELD(x, y - 1) && IS_WALL(Feld[x][y - 1]))
+ DrawLevelField(x, y - 1);
+ }
+ else
+ {
+ if (IN_LEV_FIELD(x, y + 1) && IS_WALL(Feld[x][y + 1]))
+ DrawLevelField(x, y + 1);
+ }
+
+ Feld[x][y] = Store[x][y];
+ Store[x][y] = 0;
+ GfxDir[x][y] = MovDir[x][y] = MV_NO_MOVING;
+ DrawLevelField(x, y);
+ }
+ }
+}
+
+void MauerAbleger(int ax, int ay)
+{
+ int element = Feld[ax][ay];
+ int graphic = el2img(element);
+ boolean oben_frei = FALSE, unten_frei = FALSE;
+ boolean links_frei = FALSE, rechts_frei = FALSE;
+ boolean oben_massiv = FALSE, unten_massiv = FALSE;
+ boolean links_massiv = FALSE, rechts_massiv = FALSE;
+ boolean new_wall = FALSE;
+
+ if (IS_ANIMATED(graphic))
+ DrawLevelGraphicAnimationIfNeeded(ax, ay, graphic);
+
+ if (!MovDelay[ax][ay]) /* start building new wall */
+ MovDelay[ax][ay] = 6;
+
+ if (MovDelay[ax][ay]) /* wait some time before building new wall */
+ {
+ MovDelay[ax][ay]--;
+ if (MovDelay[ax][ay])
+ return;
+ }
+
+ 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))
+ unten_frei = TRUE;
+ 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))
+ rechts_frei = TRUE;
+
+ if (element == EL_EXPANDABLE_WALL_VERTICAL ||
+ element == EL_EXPANDABLE_WALL_ANY)
+ {
+ if (oben_frei)
+ {
+ Feld[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);
+ new_wall = TRUE;
+ }
+ if (unten_frei)
+ {
+ Feld[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);
+ new_wall = TRUE;
+ }
+ }
+
+ if (element == EL_EXPANDABLE_WALL_HORIZONTAL ||
+ element == EL_EXPANDABLE_WALL_ANY ||
+ element == EL_EXPANDABLE_WALL)
+ {
+ if (links_frei)
+ {
+ Feld[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);
+ new_wall = TRUE;
+ }
+
+ if (rechts_frei)
+ {
+ Feld[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);
+ new_wall = TRUE;
+ }
+ }
+
+ if (element == EL_EXPANDABLE_WALL && (links_frei || rechts_frei))
+ DrawLevelField(ax, ay);
+
+ if (!IN_LEV_FIELD(ax, ay-1) || IS_WALL(Feld[ax][ay-1]))
+ oben_massiv = TRUE;
+ if (!IN_LEV_FIELD(ax, ay+1) || IS_WALL(Feld[ax][ay+1]))
+ unten_massiv = TRUE;
+ if (!IN_LEV_FIELD(ax-1, ay) || IS_WALL(Feld[ax-1][ay]))
+ links_massiv = TRUE;
+ if (!IN_LEV_FIELD(ax+1, ay) || IS_WALL(Feld[ax+1][ay]))
+ rechts_massiv = TRUE;
+
+ if (((oben_massiv && unten_massiv) ||
+ element == EL_EXPANDABLE_WALL_HORIZONTAL ||
+ element == EL_EXPANDABLE_WALL) &&
+ ((links_massiv && rechts_massiv) ||
+ element == EL_EXPANDABLE_WALL_VERTICAL))
+ Feld[ax][ay] = EL_WALL;
+
+ if (new_wall)
+#if 1
+ PlayLevelSoundAction(ax, ay, ACTION_GROWING);
+#else
+ PlayLevelSound(ax, ay, SND_EXPANDABLE_WALL_GROWING);
+#endif
+}
+
+void CheckForDragon(int x, int y)
+{
+ int i, j;
+ boolean dragon_found = FALSE;
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }