rnd-20040112-1-src
[rocksndiamonds.git] / src / editor.c
index 2a26c09f67222d1d7c26b2351796f4aaba71ba41..2c878e4a47f878e57d6dd2d8186c5fff4bdec92e 100644 (file)
 #define ED_AREA_ELEM_CONTENT6_XPOS     (29 * MINI_TILEX)
 #define ED_AREA_ELEM_CONTENT6_YPOS     (ED_SETTINGS_YPOS(10) + \
                                         ED_GADGET_DISTANCE - MINI_TILEY)
+/* group element content */
+#define ED_AREA_GROUP_CONTENT_XPOS     ED_SETTINGS_XPOS(0)
+#define ED_AREA_GROUP_CONTENT_YPOS     (22 * MINI_TILEY)
 
 /* values for random placement background drawing area */
 #define ED_AREA_RANDOM_BACKGROUND_YPOS (31 * MINI_TILEY)
 #define GADGET_ID_CHANGE_CONT_RND_DOWN (GADGET_ID_COUNTER_FIRST + 57)
 #define GADGET_ID_CHANGE_CONT_RND_TEXT (GADGET_ID_COUNTER_FIRST + 58)
 #define GADGET_ID_CHANGE_CONT_RND_UP   (GADGET_ID_COUNTER_FIRST + 59)
+#define GADGET_ID_GROUP_CONTENT_DOWN   (GADGET_ID_COUNTER_FIRST + 60)
+#define GADGET_ID_GROUP_CONTENT_TEXT   (GADGET_ID_COUNTER_FIRST + 61)
+#define GADGET_ID_GROUP_CONTENT_UP     (GADGET_ID_COUNTER_FIRST + 62)
 
 /* drawing area identifiers */
-#define GADGET_ID_DRAWING_AREA_FIRST   (GADGET_ID_COUNTER_FIRST + 60)
+#define GADGET_ID_DRAWING_AREA_FIRST   (GADGET_ID_COUNTER_FIRST + 63)
 
 #define GADGET_ID_DRAWING_LEVEL                (GADGET_ID_DRAWING_AREA_FIRST + 0)
 #define GADGET_ID_ELEMENT_CONTENT_0    (GADGET_ID_DRAWING_AREA_FIRST + 1)
 #define GADGET_ID_CUSTOM_CHANGE_TARGET (GADGET_ID_DRAWING_AREA_FIRST + 12)
 #define GADGET_ID_CUSTOM_CHANGE_CONTENT        (GADGET_ID_DRAWING_AREA_FIRST + 13)
 #define GADGET_ID_CUSTOM_CHANGE_TRIGGER        (GADGET_ID_DRAWING_AREA_FIRST + 14)
-#define GADGET_ID_RANDOM_BACKGROUND    (GADGET_ID_DRAWING_AREA_FIRST + 15)
+#define GADGET_ID_GROUP_CONTENT                (GADGET_ID_DRAWING_AREA_FIRST + 15)
+#define GADGET_ID_RANDOM_BACKGROUND    (GADGET_ID_DRAWING_AREA_FIRST + 16)
 
 /* text input identifiers */
-#define GADGET_ID_TEXT_INPUT_FIRST     (GADGET_ID_DRAWING_AREA_FIRST + 16)
+#define GADGET_ID_TEXT_INPUT_FIRST     (GADGET_ID_DRAWING_AREA_FIRST + 17)
 
 #define GADGET_ID_LEVEL_NAME           (GADGET_ID_TEXT_INPUT_FIRST + 0)
 #define GADGET_ID_LEVEL_AUTHOR         (GADGET_ID_TEXT_INPUT_FIRST + 1)
 #define ED_COUNTER_ID_PUSH_DELAY_RND   14
 #define ED_COUNTER_ID_MOVE_DELAY_FIX   15
 #define ED_COUNTER_ID_MOVE_DELAY_RND   16
-#define ED_COUNTER_ID_CHANGE_DELAY_FIX 17
-#define ED_COUNTER_ID_CHANGE_DELAY_RND 18
-#define ED_COUNTER_ID_CHANGE_CONT_RND  19
+#define ED_COUNTER_ID_GROUP_CONTENT    17
+#define ED_COUNTER_ID_CHANGE_DELAY_FIX 18
+#define ED_COUNTER_ID_CHANGE_DELAY_RND 19
+#define ED_COUNTER_ID_CHANGE_CONT_RND  20
 
-#define ED_NUM_COUNTERBUTTONS          20
+#define ED_NUM_COUNTERBUTTONS          21
 
 #define ED_COUNTER_ID_LEVEL_FIRST      ED_COUNTER_ID_LEVEL_XSIZE
 #define ED_COUNTER_ID_LEVEL_LAST       ED_COUNTER_ID_LEVEL_RANDOM
 #define ED_DRAWING_ID_CUSTOM_CHANGE_TARGET     12
 #define ED_DRAWING_ID_CUSTOM_CHANGE_CONTENT    13
 #define ED_DRAWING_ID_CUSTOM_CHANGE_TRIGGER    14
-#define ED_DRAWING_ID_RANDOM_BACKGROUND                15
+#define ED_DRAWING_ID_GROUP_CONTENT            15
+#define ED_DRAWING_ID_RANDOM_BACKGROUND                16
 
-#define ED_NUM_DRAWING_AREAS                   16
+#define ED_NUM_DRAWING_AREAS                   17
 
 
 /*
@@ -795,6 +804,7 @@ static boolean stick_element_properties_window = FALSE;
 static boolean custom_element_properties[NUM_ELEMENT_PROPERTIES];
 static boolean custom_element_change_events[NUM_CHANGE_EVENTS];
 static struct ElementChangeInfo custom_element_change;
+static struct ElementGroupInfo group_element_info;
 static struct ElementInfo custom_element;
 
 static struct
@@ -902,7 +912,7 @@ static struct
     NULL,                              " ", "height",
   },
 
-  /* ---------- element settings: configure (custom elements) ------------- */
+  /* ---------- element settings: configure (custom elements) -------------- */
 
   {
     ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(3),
@@ -953,6 +963,17 @@ static struct
     NULL,                              "+random", NULL
   },
 
+  /* ---------- element settings: configure (group elements) --------------- */
+
+  {
+    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(6),
+    MIN_ELEMENTS_IN_GROUP,             MAX_ELEMENTS_IN_GROUP,
+    GADGET_ID_GROUP_CONTENT_DOWN,      GADGET_ID_GROUP_CONTENT_UP,
+    GADGET_ID_GROUP_CONTENT_TEXT,      GADGET_ID_NONE,
+    &group_element_info.num_elements,
+    NULL,                              NULL, "number of elements in group"
+  },
+
   /* ---------- element settings: advanced (custom elements) --------------- */
 
   {
@@ -1070,7 +1091,15 @@ static struct ValueTextInfo options_move_pattern[] =
   { MV_ALONG_RIGHT_SIDE,       "along right side"              },
   { MV_TURNING_LEFT,           "turning left"                  },
   { MV_TURNING_RIGHT,          "turning right"                 },
+  { MV_TURNING_LEFT_RIGHT,     "turning left, right"           },
+  { MV_TURNING_RIGHT_LEFT,     "turning right, left"           },
+  { MV_TURNING_RANDOM,         "turning random"                },
   { MV_WHEN_PUSHED,            "when pushed"                   },
+  { MV_WHEN_DROPPED,           "when dropped"                  },
+#if 1
+  { MV_MAZE_RUNNER,            "maze runner style"             },
+  { MV_MAZE_HUNTER,            "maze hunter style"             },
+#endif
   { -1,                                NULL                            }
 };
 
@@ -1125,6 +1154,7 @@ static struct ValueTextInfo options_deadliness[] =
 static struct ValueTextInfo options_consistency[] =
 {
   { EP_CAN_EXPLODE_3X3,                "can explode 3x3"               },
+  { EP_CAN_EXPLODE_DYNA,       "can explode 3+3"               },
   { EP_CAN_EXPLODE_1X1,                "can explode 1x1"               },
   { EP_INDESTRUCTIBLE,         "indestructible"                },
   { -1,                                NULL                            }
@@ -1146,9 +1176,14 @@ static struct ValueTextInfo options_change_direct_action[] =
   { CE_LEFT_BY_PLAYER,         "left by player ..."            },
   { CE_DROPPED_BY_PLAYER,      "dropped by player"             },
   { CE_SWITCHED,               "switched ..."                  },
-  { CE_COLLISION,              "collision ..."                 },
-  { CE_IMPACT,                 "impact"                        },
-  { CE_SMASHED,                        "smashed"                       },
+#if 1
+  { CE_HITTING_SOMETHING,      "hitting something ..."         },
+  { CE_HIT_BY_SOMETHING,       "hit by something ..."          },
+#else
+  { CE_HITTING_SOMETHING,      "collision ..."                 },
+#endif
+  { CE_IMPACT,                 "impact (on something)"         },
+  { CE_SMASHED,                        "smashed (from above)"          },
   { -1,                                NULL                            }
 };
 
@@ -1163,6 +1198,10 @@ static struct ValueTextInfo options_change_other_action[] =
   { CE_OTHER_GETS_COLLECTED,   "player collects"               },
   { CE_OTHER_GETS_DROPPED,     "player drops"                  },
   { CE_OTHER_IS_TOUCHING,      "touching ..."                  },
+#if 1
+  { CE_OTHER_IS_HITTING,       "hitting ..."                   },
+  { CE_OTHER_GETS_HIT,         "hit by ..."                    },
+#endif
   { CE_OTHER_IS_SWITCHING,     "switch of ..."                 },
   { CE_OTHER_IS_CHANGING,      "change of"                     },
   { CE_OTHER_IS_EXPLODING,     "explosion of"                  },
@@ -1177,7 +1216,7 @@ static struct ValueTextInfo options_change_sides[] =
   { CH_SIDE_BOTTOM,            "bottom side"                   },
   { CH_SIDE_LEFT_RIGHT,                "left/right side"               },
   { CH_SIDE_TOP_BOTTOM,                "top/bottom side"               },
-  { CH_SIDE_ANY,               "all sides"                     },
+  { CH_SIDE_ANY,               "any side"                      },
   { -1,                                NULL                            }
 };
 
@@ -1828,6 +1867,15 @@ static struct
     NULL, NULL,                                NULL
   },
 
+  /* ---------- group element content -------------------------------------- */
+
+  {
+    ED_AREA_GROUP_CONTENT_XPOS,                ED_AREA_GROUP_CONTENT_YPOS,
+    MAX_ELEMENTS_IN_GROUP, 1,
+    GADGET_ID_GROUP_CONTENT,           GADGET_ID_NONE,
+    "content:", NULL,                  NULL
+  },
+
   /* ---------- random background (for random painting) -------------------- */
 
   {
@@ -1867,6 +1915,7 @@ static int new_element3 = EL_SAND;
 static void ModifyEditorCounter(int, int);
 static void ModifyEditorCounterLimits(int, int, int);
 static void ModifyEditorSelectbox(int, int);
+static void ModifyEditorDrawingArea(int, int, int);
 static void ModifyEditorElementList();
 static void RedrawDrawingElements();
 static void DrawDrawingWindow();
@@ -2133,7 +2182,11 @@ static int editor_el_more[] =
   EL_BD_FIREFLY,
 
   EL_MOLE_LEFT,
+#if 0
+  EL_MAZE_RUNNER,
+#else
   EL_EMPTY,
+#endif
   EL_MOLE_RIGHT,
   EL_PACMAN,
 
@@ -2882,6 +2935,87 @@ static int *editor_el_custom_more_ptr = editor_el_custom_more;
 static int num_editor_hl_custom_more = SIZEOF_ARRAY_INT(editor_hl_custom_more);
 static int num_editor_el_custom_more = SIZEOF_ARRAY_INT(editor_el_custom_more);
 
+static int editor_hl_group[] =
+{
+  EL_CHAR('G'),
+  EL_CHAR('R'),
+  EL_CHAR('O'),
+  EL_CHAR('U'),
+
+  EL_CHAR('P'),
+  EL_CHAR(' '),
+  EL_CHAR(' '),
+  EL_CHAR(' '),
+
+  EL_CHAR('E'),
+  EL_CHAR('L'),
+  EL_CHAR('E'),
+  EL_CHAR('M'),
+
+  EL_CHAR('E'),
+  EL_CHAR('N'),
+  EL_CHAR('T'),
+  EL_CHAR('S'),
+};
+
+static int editor_el_group[] =
+{
+  EL_GROUP_START + 0,
+  EL_GROUP_START + 1,
+  EL_GROUP_START + 2,
+  EL_GROUP_START + 3,
+
+  EL_GROUP_START + 4,
+  EL_GROUP_START + 5,
+  EL_GROUP_START + 6,
+  EL_GROUP_START + 7,
+
+  EL_GROUP_START + 8,
+  EL_GROUP_START + 9,
+  EL_GROUP_START + 10,
+  EL_GROUP_START + 11,
+
+  EL_GROUP_START + 12,
+  EL_GROUP_START + 13,
+  EL_GROUP_START + 14,
+  EL_GROUP_START + 15
+};
+static int *editor_hl_group_ptr = editor_hl_group;
+static int *editor_el_group_ptr = editor_el_group;
+static int num_editor_hl_group = SIZEOF_ARRAY_INT(editor_hl_group);
+static int num_editor_el_group = SIZEOF_ARRAY_INT(editor_el_group);
+
+static int editor_hl_group_more[] =
+{
+};
+
+static int editor_el_group_more[] =
+{
+  EL_GROUP_START + 16,
+  EL_GROUP_START + 17,
+  EL_GROUP_START + 18,
+  EL_GROUP_START + 19,
+
+  EL_GROUP_START + 20,
+  EL_GROUP_START + 21,
+  EL_GROUP_START + 22,
+  EL_GROUP_START + 23,
+
+  EL_GROUP_START + 24,
+  EL_GROUP_START + 25,
+  EL_GROUP_START + 26,
+  EL_GROUP_START + 27,
+
+  EL_GROUP_START + 28,
+  EL_GROUP_START + 29,
+  EL_GROUP_START + 30,
+  EL_GROUP_START + 31
+};
+static int *editor_hl_group_more_ptr = editor_hl_group_more;
+static int *editor_el_group_more_ptr = editor_el_group_more;
+static int num_editor_hl_group_more = SIZEOF_ARRAY_INT(editor_hl_group_more);
+static int num_editor_el_group_more = SIZEOF_ARRAY_INT(editor_el_group_more);
+
 static int editor_hl_user_defined[] =
 {
   EL_CHAR('U'),
@@ -2982,6 +3116,16 @@ editor_elements_info[] =
     &editor_hl_custom_more_ptr,                &num_editor_hl_custom_more,
     &editor_el_custom_more_ptr,                &num_editor_el_custom_more
   },
+  {
+    &setup.editor.el_custom,
+    &editor_hl_group_ptr,              &num_editor_hl_group,
+    &editor_el_group_ptr,              &num_editor_el_group
+  },
+  {
+    &setup.editor.el_custom_more,
+    &editor_hl_group_more_ptr,         &num_editor_hl_group_more,
+    &editor_el_group_more_ptr,         &num_editor_el_group_more
+  },
   {
     &setup.editor.el_user_defined,
     &editor_hl_user_defined_ptr,       &num_editor_hl_user_defined,
@@ -3058,8 +3202,7 @@ static void ReinitializeElementList()
   int pos = 0;
   int i, j;
 
-  if (editor_elements != NULL)
-    free(editor_elements);
+  checked_free(editor_elements);
 
   if (!initialized)
   {
@@ -3204,8 +3347,8 @@ static void DrawElementBorder(int dest_x, int dest_y, int width, int height,
     (input ? IMG_EDITOR_ELEMENT_BORDER_INPUT : IMG_EDITOR_ELEMENT_BORDER);
   Bitmap *src_bitmap;
   int src_x, src_y;
-  int num_mini_tilex = width / MINI_TILEX + 1;
-  int num_mini_tiley = width / MINI_TILEY + 1;
+  int num_mini_tilex = width  / MINI_TILEX + 1;
+  int num_mini_tiley = height / MINI_TILEY + 1;
   int x, y;
 
   getMiniGraphicSource(border_graphic, &src_bitmap, &src_x, &src_y);
@@ -3250,6 +3393,10 @@ static void DrawDrawingArea(int id)
   else if (id == ED_DRAWING_ID_CUSTOM_CHANGE_TRIGGER)
     DrawMiniGraphicExt(drawto, gi->x, gi->y,
                       el2edimg(custom_element_change.trigger_element));
+  else if (id == ED_DRAWING_ID_GROUP_CONTENT)
+    for (x = 0; x < group_element_info.num_elements; x++)
+      DrawMiniGraphicExt(drawto, gi->x + x * MINI_TILEX, gi->y,
+                        el2edimg(group_element_info.element[x]));
   else if (id >= ED_DRAWING_ID_ELEMENT_CONTENT_0 &&
           id <= ED_DRAWING_ID_ELEMENT_CONTENT_7)
   {
@@ -4606,7 +4753,7 @@ static void UnmapLevelEditorToolboxDrawingGadgets()
 
 static void UnmapDrawingArea(int id)
 {
-  UnmapGadget(level_editor_gadget[id]);
+  UnmapGadget(level_editor_gadget[drawingarea_info[id].gadget_id]);
 }
 
 static void UnmapLevelEditorWindowGadgets()
@@ -4942,11 +5089,13 @@ static void CopyCustomElementPropertiesToEditor(int element)
     (IS_INDESTRUCTIBLE(element) ? EP_INDESTRUCTIBLE :
      CAN_EXPLODE_1X1(element) ? EP_CAN_EXPLODE_1X1 :
      CAN_EXPLODE_3X3(element) ? EP_CAN_EXPLODE_3X3 :
+     CAN_EXPLODE_DYNA(element) ? EP_CAN_EXPLODE_DYNA :
      custom_element.consistency);
   custom_element_properties[EP_EXPLODE_RESULT] =
     (IS_INDESTRUCTIBLE(element) ||
      CAN_EXPLODE_1X1(element) ||
-     CAN_EXPLODE_3X3(element));
+     CAN_EXPLODE_3X3(element) ||
+     CAN_EXPLODE_DYNA(element));
 
   /* special case: sub-settings dependent from main setting */
   if (CAN_EXPLODE_BY_FIRE(element))
@@ -4967,7 +5116,8 @@ static void CopyCustomElementPropertiesToEditor(int element)
      HAS_CHANGE_EVENT(element, CE_LEFT_BY_PLAYER) ? CE_LEFT_BY_PLAYER :
      HAS_CHANGE_EVENT(element, CE_DROPPED_BY_PLAYER) ? CE_DROPPED_BY_PLAYER :
      HAS_CHANGE_EVENT(element, CE_SWITCHED) ? CE_SWITCHED :
-     HAS_CHANGE_EVENT(element, CE_COLLISION) ? CE_COLLISION :
+     HAS_CHANGE_EVENT(element, CE_HITTING_SOMETHING) ? CE_HITTING_SOMETHING :
+     HAS_CHANGE_EVENT(element, CE_HIT_BY_SOMETHING) ? CE_HIT_BY_SOMETHING :
      HAS_CHANGE_EVENT(element, CE_IMPACT) ? CE_IMPACT :
      HAS_CHANGE_EVENT(element, CE_SMASHED) ? CE_SMASHED :
      custom_element_change.direct_action);
@@ -4983,12 +5133,28 @@ static void CopyCustomElementPropertiesToEditor(int element)
      HAS_CHANGE_EVENT(element, CE_OTHER_GETS_COLLECTED) ? CE_OTHER_GETS_COLLECTED :
      HAS_CHANGE_EVENT(element, CE_OTHER_GETS_DROPPED) ? CE_OTHER_GETS_DROPPED :
      HAS_CHANGE_EVENT(element, CE_OTHER_IS_TOUCHING) ? CE_OTHER_IS_TOUCHING :
+     HAS_CHANGE_EVENT(element, CE_OTHER_IS_HITTING) ? CE_OTHER_IS_HITTING :
+     HAS_CHANGE_EVENT(element, CE_OTHER_GETS_HIT) ? CE_OTHER_GETS_HIT :
      HAS_CHANGE_EVENT(element, CE_OTHER_IS_SWITCHING) ? CE_OTHER_IS_SWITCHING :
      HAS_CHANGE_EVENT(element, CE_OTHER_IS_CHANGING) ? CE_OTHER_IS_CHANGING :
      HAS_CHANGE_EVENT(element, CE_OTHER_IS_EXPLODING) ? CE_OTHER_IS_EXPLODING :
      custom_element_change.other_action);
 }
 
+static void CopyGroupElementPropertiesToEditor(int element)
+{
+  group_element_info = *element_info[element].group;
+  custom_element = element_info[element];      /* needed for description */
+}
+
+static void CopyElementPropertiesToEditor(int element)
+{
+  if (IS_CUSTOM_ELEMENT(element))
+    CopyCustomElementPropertiesToEditor(element);
+  else if (IS_GROUP_ELEMENT(element))
+    CopyGroupElementPropertiesToEditor(element);
+}
+
 static void CopyCustomElementPropertiesToGame(int element)
 {
   int i;
@@ -4999,7 +5165,7 @@ static void CopyCustomElementPropertiesToGame(int element)
 
   if (level.use_custom_template)
   {
-    if (Request("Copy and modify level template ?", REQ_ASK))
+    if (Request("Copy and modify level template ?", REQ_ASK))
     {
       level.use_custom_template = FALSE;
       ModifyGadget(level_editor_gadget[GADGET_ID_CUSTOM_USE_TEMPLATE],
@@ -5057,6 +5223,7 @@ static void CopyCustomElementPropertiesToGame(int element)
   custom_element_properties[EP_INDESTRUCTIBLE] = FALSE;
   custom_element_properties[EP_CAN_EXPLODE_1X1] = FALSE;
   custom_element_properties[EP_CAN_EXPLODE_3X3] = FALSE;
+  custom_element_properties[EP_CAN_EXPLODE_DYNA] = FALSE;
   custom_element_properties[EP_CAN_EXPLODE_BY_FIRE] = FALSE;
   custom_element_properties[EP_CAN_EXPLODE_SMASHED] = FALSE;
   custom_element_properties[EP_CAN_EXPLODE_IMPACT] = FALSE;
@@ -5064,8 +5231,9 @@ static void CopyCustomElementPropertiesToGame(int element)
     custom_element_properties[EP_EXPLODE_RESULT];
 
   /* special case: sub-settings dependent from main setting */
-  if (custom_element_properties[EP_CAN_EXPLODE_3X3] ||
-      custom_element_properties[EP_CAN_EXPLODE_1X1])
+  if (custom_element_properties[EP_CAN_EXPLODE_1X1] ||
+      custom_element_properties[EP_CAN_EXPLODE_3X3] ||
+      custom_element_properties[EP_CAN_EXPLODE_DYNA])
   {
     custom_element_properties[EP_CAN_EXPLODE_BY_FIRE] =
       custom_element.can_explode_by_fire;
@@ -5085,7 +5253,8 @@ static void CopyCustomElementPropertiesToGame(int element)
   custom_element_change_events[CE_LEFT_BY_PLAYER] = FALSE;
   custom_element_change_events[CE_DROPPED_BY_PLAYER] = FALSE;
   custom_element_change_events[CE_SWITCHED] = FALSE;
-  custom_element_change_events[CE_COLLISION] = FALSE;
+  custom_element_change_events[CE_HITTING_SOMETHING] = FALSE;
+  custom_element_change_events[CE_HIT_BY_SOMETHING] = FALSE;
   custom_element_change_events[CE_IMPACT] = FALSE;
   custom_element_change_events[CE_SMASHED] = FALSE;
   custom_element_change_events[custom_element_change.direct_action] =
@@ -5101,6 +5270,8 @@ static void CopyCustomElementPropertiesToGame(int element)
   custom_element_change_events[CE_OTHER_GETS_COLLECTED] = FALSE;
   custom_element_change_events[CE_OTHER_GETS_DROPPED] = FALSE;
   custom_element_change_events[CE_OTHER_IS_TOUCHING] = FALSE;
+  custom_element_change_events[CE_OTHER_IS_HITTING] = FALSE;
+  custom_element_change_events[CE_OTHER_GETS_HIT] = FALSE;
   custom_element_change_events[CE_OTHER_IS_SWITCHING] = FALSE;
   custom_element_change_events[CE_OTHER_IS_CHANGING] = FALSE;
   custom_element_change_events[CE_OTHER_IS_EXPLODING] = FALSE;
@@ -5118,6 +5289,23 @@ static void CopyCustomElementPropertiesToGame(int element)
   custom_element_change = *element_info[element].change;
 }
 
+static void CopyGroupElementPropertiesToGame(int element)
+{
+  element_info[element] = custom_element;
+  *element_info[element].group = group_element_info;
+
+  /* mark that this group element has been modified */
+  element_info[element].modified_settings = TRUE;
+}
+
+static void CopyElementPropertiesToGame(int element)
+{
+  if (IS_CUSTOM_ELEMENT(element))
+    CopyCustomElementPropertiesToGame(element);
+  else if (IS_GROUP_ELEMENT(element))
+    CopyGroupElementPropertiesToGame(element);
+}
+
 void DrawLevelEd()
 {
   CloseDoor(DOOR_CLOSE_ALL);
@@ -5309,6 +5497,14 @@ static void ModifyEditorSelectbox(int selectbox_id, int new_value)
   ModifyGadget(gi, GDI_SELECTBOX_INDEX, new_index_value, GDI_END);
 }
 
+static void ModifyEditorDrawingArea(int drawingarea_id, int xsize, int ysize)
+{
+  int gadget_id = drawingarea_info[drawingarea_id].gadget_id;
+  struct GadgetInfo *gi = level_editor_gadget[gadget_id];
+
+  ModifyGadget(gi, GDI_AREA_SIZE, xsize, ysize, GDI_END);
+}
+
 static void ModifyEditorElementList()
 {
   int i;
@@ -5475,7 +5671,7 @@ static void DrawElementContentAreas()
       DrawBackground(SX + drawingarea_info[id].x - MINI_TILEX / 2,
                     SY + drawingarea_info[id].y - MINI_TILEY / 2,
                     4 * MINI_TILEX,
-                    4 * MINI_TILEX + ED_GADGET_TEXT_DISTANCE + font_height);
+                    4 * MINI_TILEY + ED_GADGET_TEXT_DISTANCE + font_height);
     }
   }
 
@@ -5484,6 +5680,28 @@ static void DrawElementContentAreas()
   DrawText(x, y + 2 * MINI_TILEY, "smashed", FONT_TEXT_1);
 }
 
+static void DrawGroupElementArea(int element)
+{
+  int num_elements = group_element_info.num_elements;
+  int id = ED_DRAWING_ID_GROUP_CONTENT;
+  int sx = SX + drawingarea_info[id].x - MINI_TILEX / 2;
+  int sy = SY + drawingarea_info[id].y - MINI_TILEY / 2;
+  int xsize = MAX_ELEMENTS_IN_GROUP;
+  int ysize = 1;
+
+  if (drawingarea_info[id].text_left != NULL)
+    sx += getTextWidthForDrawingArea(drawingarea_info[id].text_left);
+
+  UnmapDrawingArea(id);
+
+  ModifyEditorDrawingArea(id, num_elements, 1);
+
+  /* delete content areas in case of reducing number of them */
+  DrawBackground(sx, sy, (xsize + 1) * MINI_TILEX, (ysize + 1) * MINI_TILEY);
+
+  MapDrawingArea(id);
+}
+
 static void DrawEnvelopeTextArea(int envelope_nr)
 {
   int id = ED_TEXTAREA_ID_ENVELOPE_INFO;
@@ -5510,8 +5728,7 @@ char *getElementDescriptionFilename(int element)
   static char *filename = NULL;
   char basename[MAX_FILENAME_LEN];
 
-  if (filename != NULL)
-    free(filename);
+  checked_free(filename);
 
   /* 1st try: look for element description file for exactly this element */
   sprintf(basename, "%s.txt", element_info[element].token_name);
@@ -5547,6 +5764,26 @@ static boolean PrintInfoText(char *text, int font_nr, int start_line)
   return TRUE;
 }
 
+#if 1
+
+static int PrintElementDescriptionFromFile(char *filename, int start_line)
+{
+  int font_nr = FONT_TEXT_2;
+  int font_width = getFontWidth(font_nr);
+  int font_height = getFontHeight(font_nr);
+  int pad_x = ED_SETTINGS_XPOS(0);
+  int pad_y = ED_SETTINGS_YPOS(0) + ED_BORDER_SIZE;
+  int sx = SX + pad_x;
+  int sy = SY + pad_y + start_line * font_height;
+  int max_chars_per_line = (SXSIZE - 2 * pad_x) / font_width;
+  int max_lines_per_screen = (SYSIZE - pad_y) / font_height - 1;
+
+  return DrawTextFromFile(sx, sy, filename, font_nr, max_chars_per_line,
+                         max_lines_per_screen);
+}
+
+#else
+
 static int PrintElementDescriptionFromFile(char *filename, int start_line)
 {
   int font_nr = FONT_TEXT_2;
@@ -5634,6 +5871,8 @@ static int PrintElementDescriptionFromFile(char *filename, int start_line)
   return (current_line - start_line);
 }
 
+#endif
+
 static void DrawPropertiesTabulatorGadgets()
 {
   struct GadgetInfo *gd_gi = level_editor_gadget[GADGET_ID_PROPERTIES_INFO];
@@ -5646,7 +5885,8 @@ static void DrawPropertiesTabulatorGadgets()
   int i;
 
   /* draw additional "advanced" tabulator for custom elements */
-  if (IS_CUSTOM_ELEMENT(properties_element))
+  if (IS_CUSTOM_ELEMENT(properties_element) ||
+      IS_GROUP_ELEMENT(properties_element))
     id_last = ED_TEXTBUTTON_ID_PROPERTIES_ADVANCED;
 
   for (i = id_first; i <= id_last; i++)
@@ -5748,6 +5988,12 @@ static void DrawPropertiesInfo()
              "[Custom Element %d]", properties_element - EL_CUSTOM_START + 1);
     screen_line++;
   }
+  else if (IS_GROUP_ELEMENT(properties_element))
+  {
+    DrawTextF(pad_x, pad_y + screen_line++ * font2_height, FONT_TEXT_3,
+             "[Group Element %d]", properties_element - EL_GROUP_START + 1);
+    screen_line++;
+  }
 #endif
 
   /* ----- print number of elements / percentage of this element in level */
@@ -5880,6 +6126,7 @@ static boolean checkPropertiesConfig()
 
   if (IS_GEM(properties_element) ||
       IS_CUSTOM_ELEMENT(properties_element) ||
+      IS_GROUP_ELEMENT(properties_element) ||
       IS_ENVELOPE(properties_element) ||
       HAS_CONTENT(properties_element))
     return TRUE;
@@ -5972,6 +6219,22 @@ static void DrawPropertiesConfig()
     /* draw drawing area gadgets */
     DrawCustomContentArea();
 
+    /* draw text input gadgets */
+    MapTextInputGadget(ED_TEXTINPUT_ID_ELEMENT_NAME);
+  }
+  else if (IS_GROUP_ELEMENT(properties_element))
+  {
+    /* draw stickybutton gadget */
+    i = ED_CHECKBUTTON_ID_STICK_ELEMENT;
+    checkbutton_info[i].y = ED_SETTINGS_YPOS(0);
+    MapCheckbuttonGadget(i);
+
+    /* draw counter gadgets */
+    MapCounterButtons(ED_COUNTER_ID_GROUP_CONTENT);
+
+    /* draw drawing area gadgets */
+    DrawGroupElementArea(properties_element);
+
     /* draw text input gadgets */
     MapTextInputGadget(ED_TEXTINPUT_ID_ELEMENT_NAME);
   }
@@ -5980,10 +6243,14 @@ static void DrawPropertiesConfig()
 static void DrawPropertiesAdvancedDrawingAreas()
 {
   MapDrawingArea(ED_DRAWING_ID_CUSTOM_GRAPHIC);
-  MapDrawingArea(ED_DRAWING_ID_CUSTOM_CHANGE_TARGET);
-  MapDrawingArea(ED_DRAWING_ID_CUSTOM_CHANGE_TRIGGER);
 
-  DrawCustomChangeContentArea();
+  if (IS_CUSTOM_ELEMENT(properties_element))
+  {
+    MapDrawingArea(ED_DRAWING_ID_CUSTOM_CHANGE_TARGET);
+    MapDrawingArea(ED_DRAWING_ID_CUSTOM_CHANGE_TRIGGER);
+
+    DrawCustomChangeContentArea();
+  }
 
   redraw_mask |= REDRAW_FIELD;
 }
@@ -5997,27 +6264,42 @@ static void DrawPropertiesAdvanced()
   checkbutton_info[i].y = ED_SETTINGS_YPOS(0);
   MapCheckbuttonGadget(i);
 
-  /* draw checkbutton gadgets */
-  for (i =  ED_CHECKBUTTON_ID_CHANGE_FIRST;
-       i <= ED_CHECKBUTTON_ID_CHANGE_LAST; i++)
+  if (IS_CUSTOM_ELEMENT(properties_element))
+  {
+    /* draw checkbutton gadgets */
+    for (i =  ED_CHECKBUTTON_ID_CHANGE_FIRST;
+        i <= ED_CHECKBUTTON_ID_CHANGE_LAST; i++)
     MapCheckbuttonGadget(i);
 
-  /* draw counter gadgets */
-  for (i = ED_COUNTER_ID_CHANGE_FIRST; i <= ED_COUNTER_ID_CHANGE_LAST; i++)
-    MapCounterButtons(i);
+    /* draw counter gadgets */
+    for (i =  ED_COUNTER_ID_CHANGE_FIRST;
+        i <= ED_COUNTER_ID_CHANGE_LAST; i++)
+      MapCounterButtons(i);
 
-  /* draw selectbox gadgets */
-  for (i = ED_SELECTBOX_ID_CHANGE_FIRST; i <= ED_SELECTBOX_ID_CHANGE_LAST; i++)
-    MapSelectboxGadget(i);
+    /* draw selectbox gadgets */
+    for (i =  ED_SELECTBOX_ID_CHANGE_FIRST;
+        i <= ED_SELECTBOX_ID_CHANGE_LAST; i++)
+      MapSelectboxGadget(i);
 
-  /* draw textbutton gadgets */
-  for (i=ED_TEXTBUTTON_ID_CHANGE_FIRST; i <= ED_TEXTBUTTON_ID_CHANGE_LAST; i++)
-    MapTextbuttonGadget(i);
+    /* draw textbutton gadgets */
+    for (i =  ED_TEXTBUTTON_ID_CHANGE_FIRST;
+        i <= ED_TEXTBUTTON_ID_CHANGE_LAST; i++)
+      MapTextbuttonGadget(i);
+
+    /* draw graphicbutton gadgets */
+    for (i =  ED_GRAPHICBUTTON_ID_CHANGE_FIRST;
+        i <= ED_GRAPHICBUTTON_ID_CHANGE_LAST; i++)
+      MapGraphicbuttonGadget(i);
+  }
+  else if (IS_GROUP_ELEMENT(properties_element))
+  {
+    /* draw checkbutton gadgets */
+    MapCheckbuttonGadget(ED_CHECKBUTTON_ID_CUSTOM_USE_GRAPHIC);
+    MapCheckbuttonGadget(ED_CHECKBUTTON_ID_CUSTOM_USE_TEMPLATE);
 
-  /* draw graphicbutton gadgets */
-  for (i =  ED_GRAPHICBUTTON_ID_CHANGE_FIRST;
-       i <= ED_GRAPHICBUTTON_ID_CHANGE_LAST; i++)
-    MapGraphicbuttonGadget(i);
+    /* draw textbutton gadgets */
+    MapTextbuttonGadget(ED_TEXTBUTTON_ID_SAVE_AS_TEMPLATE);
+  }
 
   /* draw drawing area gadgets */
   DrawPropertiesAdvancedDrawingAreas();
@@ -6077,11 +6359,11 @@ static void DrawPropertiesWindow()
 
   /* make sure that previous properties edit mode exists for this element */
   if (edit_mode_properties == ED_MODE_PROPERTIES_ADVANCED &&
-      !IS_CUSTOM_ELEMENT(properties_element))
+      !IS_CUSTOM_ELEMENT(properties_element) &&
+      !IS_GROUP_ELEMENT(properties_element))
     edit_mode_properties = ED_MODE_PROPERTIES_CONFIG;
 
-  if (IS_CUSTOM_ELEMENT(properties_element))
-    CopyCustomElementPropertiesToEditor(properties_element);
+  CopyElementPropertiesToEditor(properties_element);
 
   UnmapLevelEditorWindowGadgets();
   UnmapLevelEditorToolboxDrawingGadgets();
@@ -6795,7 +7077,10 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
 
   /* clicking into drawing area with pressed Control key picks element */
   if (GetKeyModState() & KMOD_Control)
+  {
+    last_drawing_function = drawing_function;
     actual_drawing_function = GADGET_ID_PICK_ELEMENT;
+  }
 
   switch (actual_drawing_function)
   {
@@ -6864,7 +7149,7 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
          new_element = GFX_ELEMENT(new_element);
          custom_element.gfx_element = new_element;
 
-         CopyCustomElementPropertiesToGame(properties_element);
+         CopyElementPropertiesToGame(properties_element);
 
          UpdateCustomElementGraphicGadgets();
 
@@ -6894,6 +7179,12 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
 
          CopyCustomElementPropertiesToGame(properties_element);
        }
+       else if (id == GADGET_ID_GROUP_CONTENT)
+       {
+         group_element_info.element[sx] = new_element;
+
+         CopyGroupElementPropertiesToGame(properties_element);
+       }
        else if (id == GADGET_ID_RANDOM_BACKGROUND)
          random_placement_background_element = new_element;
        else if (id >= GADGET_ID_ELEMENT_CONTENT_0 &&
@@ -7010,6 +7301,8 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
        PickDrawingElement(button, custom_element_change.content[sx][sy]);
       else if (id == GADGET_ID_CUSTOM_CHANGE_TRIGGER)
        PickDrawingElement(button, custom_element_change.trigger_element);
+      else if (id == GADGET_ID_GROUP_CONTENT)
+       PickDrawingElement(button, group_element_info.element[sx]);
       else if (id == GADGET_ID_RANDOM_BACKGROUND)
        PickDrawingElement(button, random_placement_background_element);
       else if (id >= GADGET_ID_ELEMENT_CONTENT_0 &&
@@ -7065,6 +7358,11 @@ static void HandleCounterButtons(struct GadgetInfo *gi)
       DrawElementContentAreas();
       break;
 
+    case ED_COUNTER_ID_GROUP_CONTENT:
+      DrawGroupElementArea(properties_element);
+      CopyGroupElementPropertiesToGame(properties_element);
+      break;
+
     case ED_COUNTER_ID_ENVELOPE_XSIZE:
     case ED_COUNTER_ID_ENVELOPE_YSIZE:
       DrawEnvelopeTextArea(-1);
@@ -7091,7 +7389,7 @@ static void HandleCounterButtons(struct GadgetInfo *gi)
        counter_id <= ED_COUNTER_ID_CUSTOM_LAST) ||
       (counter_id >= ED_COUNTER_ID_CHANGE_FIRST &&
        counter_id <= ED_COUNTER_ID_CHANGE_LAST))
-    CopyCustomElementPropertiesToGame(properties_element);
+    CopyElementPropertiesToGame(properties_element);
 }
 
 static void HandleTextInputGadgets(struct GadgetInfo *gi)
@@ -7102,7 +7400,7 @@ static void HandleTextInputGadgets(struct GadgetInfo *gi)
 
   if (type_id == ED_TEXTINPUT_ID_ELEMENT_NAME)
   {
-    CopyCustomElementPropertiesToGame(properties_element);
+    CopyElementPropertiesToGame(properties_element);
 
     ModifyEditorElementList(); /* update changed button info text */
   }
@@ -7132,7 +7430,7 @@ static void HandleSelectboxGadgets(struct GadgetInfo *gi)
            type_id <= ED_SELECTBOX_ID_CUSTOM_LAST) ||
           (type_id >= ED_SELECTBOX_ID_CHANGE_FIRST &&
            type_id <= ED_SELECTBOX_ID_CHANGE_LAST))
-    CopyCustomElementPropertiesToGame(properties_element);
+    CopyElementPropertiesToGame(properties_element);
 }
 
 static void HandleTextbuttonGadgets(struct GadgetInfo *gi)
@@ -7149,14 +7447,15 @@ static void HandleTextbuttonGadgets(struct GadgetInfo *gi)
   }
   else if (type_id == ED_TEXTBUTTON_ID_SAVE_AS_TEMPLATE)
   {
-    boolean new_template = (!LevelFileExists(-1));
+    char *template_filename = getDefaultLevelFilename(-1);
+    boolean new_template = !fileExists(template_filename);
 
     if (new_template ||
-       Request("Save this template and kill the old ?", REQ_ASK))
+       Request("Save this template and kill the old ?", REQ_ASK))
       SaveLevelTemplate();
 
     if (new_template)
-      Request("Template saved !", REQ_CONFIRM);
+      Request("Template saved !", REQ_CONFIRM);
   }
   else if (type_id == ED_TEXTBUTTON_ID_ADD_CHANGE_PAGE &&
           custom_element.num_change_pages < MAX_CHANGE_PAGES)
@@ -7228,7 +7527,7 @@ static void HandleCheckbuttons(struct GadgetInfo *gi)
        type_id <= ED_CHECKBUTTON_ID_CHANGE_LAST &&
        type_id != ED_CHECKBUTTON_ID_CUSTOM_USE_TEMPLATE))
   {
-    CopyCustomElementPropertiesToGame(properties_element);
+    CopyElementPropertiesToGame(properties_element);
   }
 
   if (type_id == ED_CHECKBUTTON_ID_CUSTOM_USE_GRAPHIC)
@@ -7237,9 +7536,11 @@ static void HandleCheckbuttons(struct GadgetInfo *gi)
   }
   else if (type_id == ED_CHECKBUTTON_ID_CUSTOM_USE_TEMPLATE)
   {
-    if (level.use_custom_template && !LevelFileExists(-1))
+    char *template_filename = getDefaultLevelFilename(-1);
+
+    if (level.use_custom_template && !fileExists(template_filename))
     {
-      Request("No level template found !", REQ_CONFIRM);
+      Request("No level template found !", REQ_CONFIRM);
 
       level.use_custom_template = FALSE;
       ModifyGadget(gi, GDI_CHECKED, FALSE, GDI_END);
@@ -7520,7 +7821,8 @@ static void HandleControlButtons(struct GadgetInfo *gi)
        Request("No Level without Gregor Mc Duffin please !", REQ_CONFIRM);
       else
       {
-       boolean new_level = (!LevelFileExists(level_nr));
+       char *level_filename = getDefaultLevelFilename(level_nr);
+       boolean new_level = !fileExists(level_filename);
 
        if (new_level ||
            Request("Save this level and kill the old ?", REQ_ASK))
@@ -7907,6 +8209,9 @@ static void HandleDrawingAreaInfo(struct GadgetInfo *gi)
     else if (id == GADGET_ID_CUSTOM_CHANGE_TRIGGER)
       DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
                getElementInfoText(custom_element_change.trigger_element));
+    else if (id == GADGET_ID_GROUP_CONTENT)
+      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
+               getElementInfoText(group_element_info.element[sx]));
     else if (id == GADGET_ID_RANDOM_BACKGROUND)
       DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
                getElementInfoText(random_placement_background_element));
@@ -7939,6 +8244,9 @@ static void HandleDrawingAreaInfo(struct GadgetInfo *gi)
     else if (id == GADGET_ID_CUSTOM_CHANGE_TRIGGER)
       DrawTextS(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
                "Other element triggering change");
+    else if (id == GADGET_ID_GROUP_CONTENT)
+      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
+               "Group element position: %d", sx + 1);
     else if (id == GADGET_ID_RANDOM_BACKGROUND)
       DrawTextS(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
                "Random placement background");