+ if (CAN_BE_CRUMBLED(Feld[x][y]))
+ DrawLevelFieldCrumbledSandNeighbours(x, y);
+
+ TestIfBadThingTouchesHero(x, y);
+ TestIfPlayerTouchesCustomElement(x, y);
+ TestIfElementTouchesCustomElement(x, y);
+}
+
+static void ChangeElementNow(int x, int y, int element)
+{
+ struct ElementChangeInfo *change = &element_info[element].change;
+
+ /* prevent CheckTriggeredElementChange() from looping */
+ Changing[x][y] = TRUE;
+
+ CheckTriggeredElementChange(x, y, Feld[x][y], CE_OTHER_IS_CHANGING);
+
+ Changing[x][y] = FALSE;
+
+ if (change->explode)
+ {
+ Bang(x, y);
+ return;
+ }
+
+ if (change->use_content)
+ {
+ boolean complete_change = TRUE;
+ boolean can_change[3][3];
+ int xx, yy;
+
+ for (yy = 0; yy < 3; yy++) for(xx = 0; xx < 3 ; xx++)
+ {
+ boolean half_destructible;
+ int ex = x + xx - 1;
+ int ey = y + yy - 1;
+ int e;
+
+ can_change[xx][yy] = TRUE;
+
+ if (ex == x && ey == y) /* do not check changing element itself */
+ continue;
+
+ if (change->content[xx][yy] == EL_EMPTY_SPACE)
+ {
+ can_change[xx][yy] = FALSE; /* do not change empty borders */
+
+ continue;
+ }
+
+ if (!IN_LEV_FIELD(ex, ey))
+ {
+ can_change[xx][yy] = FALSE;
+ complete_change = FALSE;
+
+ continue;
+ }
+
+ e = Feld[ex][ey];
+
+ if (IS_MOVING(ex, ey) || IS_BLOCKED(ex, ey))
+ e = MovingOrBlocked2Element(ex, ey);
+
+ half_destructible = (IS_FREE(ex, ey) || IS_DIGGABLE(e));
+
+ if ((change->power <= CP_NON_DESTRUCTIVE && !IS_FREE(ex, ey)) ||
+ (change->power <= CP_HALF_DESTRUCTIVE && !half_destructible) ||
+ (change->power <= CP_FULL_DESTRUCTIVE && IS_INDESTRUCTIBLE(e)))
+ {
+ can_change[xx][yy] = FALSE;
+ complete_change = FALSE;
+ }
+ }
+
+ if (!change->only_complete || complete_change)
+ {
+ boolean something_has_changed = FALSE;
+
+ if (change->only_complete && change->use_random_change &&
+ RND(100) < change->random)
+ return;
+
+ for (yy = 0; yy < 3; yy++) for(xx = 0; xx < 3 ; xx++)
+ {
+ int ex = x + xx - 1;
+ int ey = y + yy - 1;
+
+ if (can_change[xx][yy] && (!change->use_random_change ||
+ RND(100) < change->random))
+ {
+ if (IS_MOVING(ex, ey) || IS_BLOCKED(ex, ey))
+ RemoveMovingField(ex, ey);
+
+ ChangeElementNowExt(ex, ey, change->content[xx][yy]);
+
+ something_has_changed = TRUE;
+
+ /* for symmetry reasons, stop newly created border elements */
+ if (ex != x || ey != y)
+ Stop[ex][ey] = TRUE;
+ }
+ }
+
+ if (something_has_changed)
+ PlaySoundLevelElementAction(x, y, element, ACTION_CHANGING);
+ }
+ }
+ else
+ {
+ ChangeElementNowExt(x, y, change->target_element);
+
+ PlaySoundLevelElementAction(x, y, element, ACTION_CHANGING);
+ }
+}
+
+static void ChangeElement(int x, int y)
+{
+#if 1
+ int element = MovingOrBlocked2Element(x, y);
+#else
+ int element = Feld[x][y];
+#endif
+ struct ElementChangeInfo *change = &element_info[element].change;
+
+ if (ChangeDelay[x][y] == 0) /* initialize element change */
+ {
+#if 1
+ ChangeDelay[x][y] = ( change->delay_fixed * change->delay_frames +
+ RND(change->delay_random * change->delay_frames)) + 1;
+#else
+ ChangeDelay[x][y] = changing_element[element].change_delay + 1;
+
+ if (IS_CUSTOM_ELEMENT(element) && HAS_CHANGE_EVENT(element, CE_DELAY))
+ {
+ int max_random_delay = element_info[element].change.delay_random;
+ int delay_frames = element_info[element].change.delay_frames;
+
+ ChangeDelay[x][y] += RND(max_random_delay * delay_frames);
+ }
+#endif
+
+ ResetGfxAnimation(x, y);
+ ResetRandomAnimationValue(x, y);
+
+#if 1
+ if (change->pre_change_function)
+ change->pre_change_function(x, y);
+#else
+ if (changing_element[element].pre_change_function)
+ changing_element[element].pre_change_function(x, y);
+#endif
+ }
+
+ ChangeDelay[x][y]--;
+
+ if (ChangeDelay[x][y] != 0) /* continue element change */
+ {
+ int graphic = el_act_dir2img(element, GfxAction[x][y], MovDir[x][y]);
+
+ if (IS_ANIMATED(graphic))
+ DrawLevelGraphicAnimationIfNeeded(x, y, graphic);
+
+#if 1
+ if (change->change_function)
+ change->change_function(x, y);
+#else