+ if (element_name[max_chars_per_line] == ' ')
+ next_pos++;
+ else
+ {
+ int i;
+
+ for (i = max_chars_per_line - 1; i >= 0; i--)
+ if (buffer[i] == ' ')
+ break;
+
+ if (strlen(&element_name[i + 1]) <= max_chars_per_line)
+ {
+ buffer[i] = '\0';
+ next_pos = i + 1;
+ }
+ }
+
+ DrawTextS(x, y - font_height / 2, font_nr, buffer);
+
+ strncpy(buffer, &element_name[next_pos], max_chars_per_line);
+ buffer[max_chars_per_line] = '\0';
+
+ DrawTextS(x, y + font_height / 2, font_nr, buffer);
+ }
+}
+
+static void DrawPropertiesWindow()
+{
+ int xstart = 2;
+ int ystart = 4;
+
+ stick_element_properties_window = FALSE;
+
+ /* make sure that previous properties edit mode exists for this element */
+ if (edit_mode_properties > ED_MODE_PROPERTIES_CONFIG &&
+ !IS_CUSTOM_ELEMENT(properties_element))
+ edit_mode_properties = ED_MODE_PROPERTIES_CONFIG;
+
+ if (edit_mode_properties == ED_MODE_PROPERTIES_CONFIG &&
+ IS_CUSTOM_ELEMENT(properties_element))
+ edit_mode_properties = ED_MODE_PROPERTIES_CONFIG_1;
+
+ CopyElementPropertiesToEditor(properties_element);
+
+ UnmapLevelEditorWindowGadgets();
+ UnmapLevelEditorToolboxDrawingGadgets();
+ UnmapLevelEditorToolboxCustomGadgets();
+
+ if (IS_CUSTOM_ELEMENT(properties_element) ||
+ IS_GROUP_ELEMENT(properties_element))
+ MapLevelEditorToolboxCustomGadgets();
+
+ SetMainBackgroundImage(IMG_BACKGROUND_EDITOR);
+ ClearWindow();
+
+#if 0
+ DrawTextSCentered(ED_SETTINGS1_YPOS, FONT_TITLE_1, "Element Settings");
+#else
+ DrawText(SX + ED_SETTINGS2_XPOS, SY + ED_SETTINGS1_YPOS,
+ "Element Settings", FONT_TITLE_1);
+#endif
+
+ FrameCounter = 0; /* restart animation frame counter */
+
+ DrawElementBorder(SX + xstart * MINI_TILEX,
+ SY + ystart * MINI_TILEY + MINI_TILEY / 2,
+ TILEX, TILEY, FALSE);
+
+ DrawEditorElementAnimation(SX + xstart * MINI_TILEX,
+ SY + ystart * MINI_TILEY + MINI_TILEY / 2);
+
+ DrawEditorElementName((xstart + 3) * MINI_TILEX + 1,
+ (ystart + 1) * MINI_TILEY + 1,
+ properties_element);
+
+ DrawPropertiesTabulatorGadgets();
+
+ if (edit_mode_properties == ED_MODE_PROPERTIES_INFO)
+ DrawPropertiesInfo();
+ else if (edit_mode_properties == ED_MODE_PROPERTIES_CHANGE)
+ DrawPropertiesChange();
+ else /* (edit_mode_properties == ED_MODE_PROPERTIES_CONFIG[_1|_2]) */
+ DrawPropertiesConfig();
+}
+
+static void UpdateCustomElementGraphicGadgets()
+{
+ int i;
+
+ ModifyEditorElementList();
+ RedrawDrawingElements();
+
+ /* force redraw of all mapped drawing area gadgets */
+ for (i = 0; i < ED_NUM_DRAWING_AREAS; i++)
+ {
+ struct GadgetInfo *gi = level_editor_gadget[drawingarea_info[i].gadget_id];
+
+ if (gi->mapped)
+ MapDrawingArea(i);
+ }
+}
+
+static int getDirectionFromTube(int element)
+{
+ switch (element)
+ {
+ case EL_TUBE_LEFT_UP: return (MV_LEFT | MV_UP);
+ case EL_TUBE_LEFT_DOWN: return (MV_LEFT | MV_DOWN);
+ case EL_TUBE_RIGHT_UP: return (MV_RIGHT | MV_UP);
+ case EL_TUBE_RIGHT_DOWN: return (MV_RIGHT | MV_DOWN);
+ case EL_TUBE_HORIZONTAL: return (MV_HORIZONTAL);
+ case EL_TUBE_HORIZONTAL_UP: return (MV_HORIZONTAL | MV_UP);
+ case EL_TUBE_HORIZONTAL_DOWN: return (MV_HORIZONTAL | MV_DOWN);
+ case EL_TUBE_VERTICAL: return (MV_VERTICAL);
+ case EL_TUBE_VERTICAL_LEFT: return (MV_VERTICAL | MV_LEFT);
+ case EL_TUBE_VERTICAL_RIGHT: return (MV_VERTICAL | MV_RIGHT);
+ case EL_TUBE_ANY: return (MV_ANY_DIRECTION);
+ }
+
+ return MV_NONE;
+}
+
+static int getTubeFromDirection(int direction)
+{
+ switch (direction)
+ {
+ case (MV_LEFT | MV_UP): return EL_TUBE_LEFT_UP;
+ case (MV_LEFT | MV_DOWN): return EL_TUBE_LEFT_DOWN;
+ case (MV_RIGHT | MV_UP): return EL_TUBE_RIGHT_UP;
+ case (MV_RIGHT | MV_DOWN): return EL_TUBE_RIGHT_DOWN;
+ case (MV_HORIZONTAL): return EL_TUBE_HORIZONTAL;
+ case (MV_HORIZONTAL | MV_UP): return EL_TUBE_HORIZONTAL_UP;
+ case (MV_HORIZONTAL | MV_DOWN): return EL_TUBE_HORIZONTAL_DOWN;
+ case (MV_VERTICAL): return EL_TUBE_VERTICAL;
+ case (MV_VERTICAL | MV_LEFT): return EL_TUBE_VERTICAL_LEFT;
+ case (MV_VERTICAL | MV_RIGHT): return EL_TUBE_VERTICAL_RIGHT;
+ case (MV_ANY_DIRECTION): return EL_TUBE_ANY;
+
+ /* if only one direction, fall back to simple tube with that direction */
+ case (MV_LEFT): return EL_TUBE_HORIZONTAL;
+ case (MV_RIGHT): return EL_TUBE_HORIZONTAL;
+ case (MV_UP): return EL_TUBE_VERTICAL;
+ case (MV_DOWN): return EL_TUBE_VERTICAL;
+ }
+
+ return EL_EMPTY;
+}
+
+static int getTubeFromDirectionNotEmpty(int direction, int element_old)
+{
+ int element_new = getTubeFromDirection(direction);
+
+ return (element_new != EL_EMPTY ? element_new : element_old);
+}
+
+static int getOpenDirectionFromBelt(int element)
+{
+ int belt_dir = getBeltDirFromBeltElement(element);
+
+ return (belt_dir == MV_LEFT ? MV_RIGHT :
+ belt_dir == MV_RIGHT ? MV_LEFT :
+ belt_dir == MV_NONE ? MV_HORIZONTAL : belt_dir);
+}
+
+static int getBeltFromNrAndOpenDirection(int nr, int direction)
+{
+ int belt_dir = (direction == MV_LEFT ? MV_RIGHT :
+ direction == MV_RIGHT ? MV_LEFT :
+ direction == MV_HORIZONTAL ? MV_NONE : direction);
+
+ return getBeltElementFromBeltNrAndBeltDir(nr, belt_dir);
+}
+
+static int getClosedTube(int x, int y)
+{
+ static int xy[4][2] =
+ {
+ { -1, 0 },
+ { +1, 0 },
+ { 0, -1 },
+ { 0, +1 }
+ };
+ int element_old = IntelliDrawBuffer[x][y];
+ int tube_direction_old = getDirectionFromTube(element_old);
+ int tube_direction_new = MV_NONE;
+ int i;
+
+ for (i = 0; i < NUM_DIRECTIONS; i++)
+ {
+ int xx = x + xy[i][0];
+ int yy = y + xy[i][1];
+ int dir = MV_DIR_FROM_BIT(i);
+ int dir_opposite = MV_DIR_OPPOSITE(dir);
+
+ if (IN_LEV_FIELD(xx, yy) && IS_TUBE(IntelliDrawBuffer[xx][yy]) &&
+ (tube_direction_old & dir) &&
+ (getDirectionFromTube(IntelliDrawBuffer[xx][yy]) & dir_opposite))
+ tube_direction_new |= dir;
+ }
+
+ return getTubeFromDirectionNotEmpty(tube_direction_new, element_old);
+}
+
+static int getClosedBelt(int x, int y)
+{
+ static int xy[2][2] =
+ {
+ { -1, 0 },
+ { +1, 0 },
+ };
+ int element_old = IntelliDrawBuffer[x][y];
+ int belt_nr = getBeltNrFromBeltElement(element_old);
+ int belt_direction_old = getOpenDirectionFromBelt(element_old);
+ int belt_direction_new = MV_NONE;
+ int i;
+
+ for (i = 0; i < 2; i++)
+ {
+ int xx = x + xy[i][0];
+ int yy = y + xy[i][1];
+ int dir = MV_DIR_FROM_BIT(i);
+ int dir_opposite = MV_DIR_OPPOSITE(dir);
+
+ if (IN_LEV_FIELD(xx, yy) && IS_BELT(IntelliDrawBuffer[xx][yy]) &&
+ (belt_direction_old & dir) &&
+ (getOpenDirectionFromBelt(IntelliDrawBuffer[xx][yy]) & dir_opposite))
+ belt_direction_new |= dir;
+ }
+
+ return getBeltFromNrAndOpenDirection(belt_nr, belt_direction_new);
+}
+
+static void SetElementSimple(int x, int y, int element, boolean change_level)
+{
+ if (change_level)
+ Feld[x][y] = element;
+
+ IntelliDrawBuffer[x][y] = element;
+
+ if (IN_ED_FIELD(x - level_xpos, y - level_ypos))
+ DrawMiniElement(x - level_xpos, y - level_ypos, element);
+}
+
+static void SetElementIntelliDraw(int x, int y, int new_element,
+ boolean change_level)
+{
+ static int last_x = -1;
+ static int last_y = -1;
+ int old_element = IntelliDrawBuffer[x][y];
+
+ if (new_element == EL_UNDEFINED)
+ {
+ last_x = -1;
+ last_y = -1;
+
+ return;
+ }
+
+ if (IS_TUBE(new_element))
+ {
+ static int xy[4][2] =
+ {
+ { -1, 0 },
+ { +1, 0 },
+ { 0, -1 },
+ { 0, +1 }
+ };
+ boolean last_element_is_neighbour = FALSE;
+ int last_element_new;
+ int direction = MV_NONE;
+ int i;
+
+ /* if existing element is tube, keep all existing tube directions */
+ if (IS_TUBE(old_element))
+ direction |= getDirectionFromTube(old_element);
+
+ for (i = 0; i < NUM_DIRECTIONS; i++)
+ {
+ int xx = x + xy[i][0];
+ int yy = y + xy[i][1];
+
+ if (last_x == xx && last_y == yy && IN_LEV_FIELD(last_x, last_y) &&
+ IS_TUBE(IntelliDrawBuffer[last_x][last_y]))
+ {
+ int dir = MV_DIR_FROM_BIT(i);
+ int dir_opposite = MV_DIR_OPPOSITE(dir);
+ int last_element_old = IntelliDrawBuffer[last_x][last_y];
+ int last_direction_old = getDirectionFromTube(last_element_old);
+ int last_direction_new = last_direction_old | dir_opposite;
+
+ last_element_new = getTubeFromDirection(last_direction_new);
+ last_element_is_neighbour = TRUE;
+
+ direction |= dir;
+ }
+ }
+
+ new_element = getTubeFromDirectionNotEmpty(direction, new_element);
+
+ /* reduce connections of neighbour tube elements to minimal connections */
+ if (last_element_is_neighbour)
+ {
+ /* set neighbour tube elements to newly determined tube connections */
+ SetElementSimple(x, y, new_element, change_level);
+ SetElementSimple(last_x, last_y, last_element_new, change_level);
+
+ /* remove all open tube connections of neighbour tube elements */
+ new_element = getClosedTube(x, y);
+ last_element_new = getClosedTube(last_x, last_y);
+
+ /* set neighbour tube elements to new, minimized tube connections */
+ SetElementSimple(x, y, new_element, change_level);
+ SetElementSimple(last_x, last_y, last_element_new, change_level);
+ }
+ }
+ else if (IS_ACID_POOL(new_element))
+ {
+ int last_element_new = EL_UNDEFINED;
+
+ if (IS_ACID_POOL(old_element))
+ {
+ new_element = old_element;
+ }
+
+ if (last_x == x - 1 && last_y == y && IN_LEV_FIELD(last_x, last_y) &&
+ IS_ACID_POOL(IntelliDrawBuffer[last_x][last_y]))
+ {
+ if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPLEFT)
+ {
+ new_element = EL_ACID_POOL_TOPRIGHT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPRIGHT)
+ {
+ last_element_new = EL_ACID;
+ new_element = EL_ACID_POOL_TOPRIGHT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMLEFT)
+ {
+ new_element = EL_ACID_POOL_BOTTOMRIGHT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMRIGHT)
+ {
+ last_element_new = EL_ACID_POOL_BOTTOM;
+ new_element = EL_ACID_POOL_BOTTOMRIGHT;
+ }
+ }
+ else if (last_x == x + 1 && last_y == y && IN_LEV_FIELD(last_x, last_y) &&
+ IS_ACID_POOL(IntelliDrawBuffer[last_x][last_y]))
+ {
+ if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPLEFT)
+ {
+ last_element_new = EL_ACID;
+ new_element = EL_ACID_POOL_TOPLEFT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPRIGHT)
+ {
+ new_element = EL_ACID_POOL_TOPLEFT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMLEFT)
+ {
+ last_element_new = EL_ACID_POOL_BOTTOM;
+ new_element = EL_ACID_POOL_BOTTOMLEFT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMRIGHT)
+ {
+ new_element = EL_ACID_POOL_BOTTOMLEFT;
+ }
+ }
+ else if (last_x == x && last_y == y - 1 && IN_LEV_FIELD(last_x, last_y) &&
+ IS_ACID_POOL(IntelliDrawBuffer[last_x][last_y]))
+ {
+ if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPLEFT)
+ {
+ new_element = EL_ACID_POOL_BOTTOMLEFT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPRIGHT)
+ {
+ new_element = EL_ACID_POOL_BOTTOMRIGHT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMLEFT)
+ {
+ last_element_new = EL_ACID_POOL_TOPLEFT;
+ new_element = EL_ACID_POOL_BOTTOMLEFT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMRIGHT)
+ {
+ last_element_new = EL_ACID_POOL_TOPRIGHT;
+ new_element = EL_ACID_POOL_BOTTOMRIGHT;
+ }
+ else
+ {
+ last_element_new = EL_ACID;
+ new_element = EL_ACID_POOL_BOTTOM;
+ }
+ }
+ else if (last_x == x && last_y == y + 1 && IN_LEV_FIELD(last_x, last_y) &&
+ IS_ACID_POOL(IntelliDrawBuffer[last_x][last_y]))
+ {
+ if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPLEFT)
+ {
+ new_element = EL_ACID_POOL_TOPLEFT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_TOPRIGHT)
+ {
+ new_element = EL_ACID_POOL_TOPRIGHT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMLEFT)
+ {
+ new_element = EL_ACID_POOL_TOPLEFT;
+ }
+ else if (IntelliDrawBuffer[last_x][last_y] == EL_ACID_POOL_BOTTOMRIGHT)
+ {
+ new_element = EL_ACID_POOL_TOPRIGHT;
+ }
+ else
+ {
+ last_element_new = EL_ACID;
+ new_element = EL_ACID;
+ }
+ }
+
+ if (last_element_new != EL_UNDEFINED)
+ SetElementSimple(last_x, last_y, last_element_new, change_level);
+ }
+ else if (IS_BELT(new_element))
+ {
+ int last_element_new = EL_UNDEFINED;
+ int belt_nr = getBeltNrFromBeltElement(new_element);
+#if 0
+ int belt_left = getBeltElementFromBeltNrAndBeltDir(belt_nr, MV_LEFT);
+#endif
+ int belt_middle = getBeltElementFromBeltNrAndBeltDir(belt_nr, MV_NONE);
+#if 0
+ int belt_right = getBeltElementFromBeltNrAndBeltDir(belt_nr, MV_RIGHT);
+#endif
+ boolean last_element_is_neighbour = FALSE;
+
+#if 0
+ if (IS_BELT(old_element))