rnd-20040114-1-src
[rocksndiamonds.git] / src / editor.c
index 2c878e4a47f878e57d6dd2d8186c5fff4bdec92e..44823d10c19a4bb4a055ca036c0e8373b5ed926f 100644 (file)
                                         ED_GADGET_DISTANCE)
 /* custom element content */
 #define ED_AREA_ELEM_CONTENT4_XPOS     (29 * MINI_TILEX)
-#define ED_AREA_ELEM_CONTENT4_YPOS     (ED_SETTINGS_YPOS(12) + \
+#define ED_AREA_ELEM_CONTENT4_YPOS     (ED_SETTINGS_YPOS(13) + \
                                         ED_GADGET_DISTANCE - MINI_TILEY)
+/* movement enter/leave element */
+#define ED_AREA_ELEM_CONTENT4a_XPOS    (29 * MINI_TILEX)
+#define ED_AREA_ELEM_CONTENT4a_YPOS    (ED_SETTINGS_YPOS(7) + \
+                                        ED_GADGET_DISTANCE)
+#define ED_AREA_ELEM_CONTENT4b_XPOS    (29 * MINI_TILEX)
+#define ED_AREA_ELEM_CONTENT4b_YPOS    (ED_SETTINGS_YPOS(7) + \
+                                        ED_GADGET_DISTANCE)
 /* custom change trigger element */
 #define ED_AREA_ELEM_CONTENT5_YPOS     (ED_SETTINGS_YPOS(6) + \
                                         ED_GADGET_DISTANCE)
 #define GADGET_ID_AMOEBA_CONTENT       (GADGET_ID_DRAWING_AREA_FIRST + 9)
 #define GADGET_ID_CUSTOM_GRAPHIC       (GADGET_ID_DRAWING_AREA_FIRST + 10)
 #define GADGET_ID_CUSTOM_CONTENT       (GADGET_ID_DRAWING_AREA_FIRST + 11)
-#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_GROUP_CONTENT                (GADGET_ID_DRAWING_AREA_FIRST + 15)
-#define GADGET_ID_RANDOM_BACKGROUND    (GADGET_ID_DRAWING_AREA_FIRST + 16)
+#define GADGET_ID_CUSTOM_MOVE_ENTER    (GADGET_ID_DRAWING_AREA_FIRST + 12)
+#define GADGET_ID_CUSTOM_MOVE_LEAVE    (GADGET_ID_DRAWING_AREA_FIRST + 13)
+#define GADGET_ID_CUSTOM_CHANGE_TARGET (GADGET_ID_DRAWING_AREA_FIRST + 14)
+#define GADGET_ID_CUSTOM_CHANGE_CONTENT        (GADGET_ID_DRAWING_AREA_FIRST + 15)
+#define GADGET_ID_CUSTOM_CHANGE_TRIGGER        (GADGET_ID_DRAWING_AREA_FIRST + 16)
+#define GADGET_ID_GROUP_CONTENT                (GADGET_ID_DRAWING_AREA_FIRST + 17)
+#define GADGET_ID_RANDOM_BACKGROUND    (GADGET_ID_DRAWING_AREA_FIRST + 18)
 
 /* text input identifiers */
-#define GADGET_ID_TEXT_INPUT_FIRST     (GADGET_ID_DRAWING_AREA_FIRST + 17)
+#define GADGET_ID_TEXT_INPUT_FIRST     (GADGET_ID_DRAWING_AREA_FIRST + 19)
 
 #define GADGET_ID_LEVEL_NAME           (GADGET_ID_TEXT_INPUT_FIRST + 0)
 #define GADGET_ID_LEVEL_AUTHOR         (GADGET_ID_TEXT_INPUT_FIRST + 1)
 #define ED_DRAWING_ID_AMOEBA_CONTENT           9
 #define ED_DRAWING_ID_CUSTOM_GRAPHIC           10
 #define ED_DRAWING_ID_CUSTOM_CONTENT           11
-#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_GROUP_CONTENT            15
-#define ED_DRAWING_ID_RANDOM_BACKGROUND                16
+#define ED_DRAWING_ID_CUSTOM_MOVE_ENTER                12
+#define ED_DRAWING_ID_CUSTOM_MOVE_LEAVE                13
+#define ED_DRAWING_ID_CUSTOM_CHANGE_TARGET     14
+#define ED_DRAWING_ID_CUSTOM_CHANGE_CONTENT    15
+#define ED_DRAWING_ID_CUSTOM_CHANGE_TRIGGER    16
+#define ED_DRAWING_ID_GROUP_CONTENT            17
+#define ED_DRAWING_ID_RANDOM_BACKGROUND                18
 
-#define ED_NUM_DRAWING_AREAS                   17
+#define ED_NUM_DRAWING_AREAS                   19
 
 
 /*
@@ -947,7 +958,7 @@ static struct
     NULL,                              "+random", NULL
   },
   {
-    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(7),
+    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(9),
     0,                                 999,
     GADGET_ID_MOVE_DELAY_FIX_DOWN,     GADGET_ID_MOVE_DELAY_FIX_UP,
     GADGET_ID_MOVE_DELAY_FIX_TEXT,     GADGET_ID_NONE,
@@ -955,7 +966,7 @@ static struct
     NULL,                              "move delay", NULL
   },
   {
-    -1,                                        ED_SETTINGS_YPOS(7),
+    -1,                                        ED_SETTINGS_YPOS(9),
     0,                                 999,
     GADGET_ID_MOVE_DELAY_RND_DOWN,     GADGET_ID_MOVE_DELAY_RND_UP,
     GADGET_ID_MOVE_DELAY_RND_TEXT,     GADGET_ID_MOVE_DELAY_FIX_UP,
@@ -1296,7 +1307,7 @@ static struct
     "move/fall speed", NULL,           "speed of element movement"
   },
   {
-    -1,                                        ED_SETTINGS_YPOS(9),
+    -1,                                        ED_SETTINGS_YPOS(10),
     GADGET_ID_CUSTOM_SMASH_TARGETS,    GADGET_ID_CUSTOM_CAN_SMASH,
     -1,
     options_smash_targets,
@@ -1304,7 +1315,7 @@ static struct
     "can smash", NULL,                 "elements that can be smashed"
   },
   {
-    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(10),
+    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(11),
     GADGET_ID_CUSTOM_SLIPPERY_TYPE,    GADGET_ID_NONE,
     -1,
     options_slippery_type,
@@ -1312,7 +1323,7 @@ static struct
     "slippery", NULL,                  "where other elements fall down"
   },
   {
-    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(11),
+    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(12),
     GADGET_ID_CUSTOM_DEADLINESS,       GADGET_ID_NONE,
     -1,
     options_deadliness,
@@ -1320,7 +1331,7 @@ static struct
     "deadly when", NULL,               "deadliness of element"
   },
   {
-    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(12),
+    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(13),
     GADGET_ID_CUSTOM_CONSISTENCY,      GADGET_ID_NONE,
     -1,
     options_consistency,
@@ -1632,49 +1643,49 @@ static struct
     NULL, NULL,                                "element can move in some direction"
   },
   {
-    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(9),
+    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(10),
     GADGET_ID_CUSTOM_CAN_FALL,         GADGET_ID_NONE,
     &custom_element_properties[EP_CAN_FALL],
     NULL, "can fall",                  "element can fall down"
   },
   {
-    -1,                                        ED_SETTINGS_YPOS(9),
+    -1,                                        ED_SETTINGS_YPOS(10),
     GADGET_ID_CUSTOM_CAN_SMASH,                GADGET_ID_CUSTOM_CAN_FALL,
     &custom_element_properties[EP_CAN_SMASH],
     " ", NULL,                         "element can smash other elements"
   },
   {
-    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(10),
+    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(11),
     GADGET_ID_CUSTOM_SLIPPERY,         GADGET_ID_NONE,
     &custom_element_properties[EP_SLIPPERY],
     NULL, NULL,                                "other elements can fall down from it"
   },
   {
-    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(11),
+    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(12),
     GADGET_ID_CUSTOM_DEADLY,           GADGET_ID_NONE,
     &custom_element_properties[EP_DEADLY],
     NULL, NULL,                                "element can kill the player"
   },
   {
-    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(12),
+    ED_SETTINGS_XPOS(0),               ED_SETTINGS_YPOS(13),
     GADGET_ID_CUSTOM_EXPLODE_RESULT,   GADGET_ID_NONE,
     &custom_element_properties[EP_EXPLODE_RESULT],
     NULL, NULL,                                "set consistency/destructibility"
   },
   {
-    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(13),
+    ED_SETTINGS_XPOS(1),               ED_SETTINGS_YPOS(14),
     GADGET_ID_CUSTOM_EXPLODE_FIRE,     GADGET_ID_NONE,
     &custom_element.can_explode_by_fire,
     NULL, "by fire",                   "element can explode by fire/explosion"
   },
   {
-    -1,                                        ED_SETTINGS_YPOS(13),
+    -1,                                        ED_SETTINGS_YPOS(14),
     GADGET_ID_CUSTOM_EXPLODE_SMASH,    GADGET_ID_CUSTOM_EXPLODE_FIRE,
     &custom_element.can_explode_smashed,
     " ", "smashed",                    "element can explode when smashed"
   },
   {
-    -1,                                        ED_SETTINGS_YPOS(13),
+    -1,                                        ED_SETTINGS_YPOS(14),
     GADGET_ID_CUSTOM_EXPLODE_IMPACT,   GADGET_ID_CUSTOM_EXPLODE_SMASH,
     &custom_element.can_explode_impact,
     " ", "impact",                     "element can explode on impact"
@@ -1840,6 +1851,22 @@ static struct
     "content:", NULL,                  NULL
   },
 
+  /* ---------- custom enter and leave element (when moving) --------------- */
+
+  {
+    ED_SETTINGS_XPOS(1),               ED_AREA_ELEM_CONTENT4a_YPOS,
+    1, 1,
+    GADGET_ID_CUSTOM_MOVE_ENTER,       GADGET_ID_NONE,
+    "can dig:", " ",                   NULL
+  },
+
+  {
+    -1,                                        ED_AREA_ELEM_CONTENT4b_YPOS,
+    1, 1,
+    GADGET_ID_CUSTOM_MOVE_LEAVE,       GADGET_ID_CUSTOM_MOVE_ENTER,
+    "can leave behind:", NULL,         NULL
+  },
+
   /* ---------- custom change target --------------------------------------- */
 
   {
@@ -2182,11 +2209,7 @@ 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,
 
@@ -3381,6 +3404,12 @@ static void DrawDrawingArea(int id)
        DrawMiniGraphicExt(drawto,
                           gi->x + x * MINI_TILEX, gi->y + y * MINI_TILEY,
                           el2edimg(custom_element.content[x][y]));
+  else if (id == ED_DRAWING_ID_CUSTOM_MOVE_ENTER)
+    DrawMiniGraphicExt(drawto, gi->x, gi->y,
+                      el2edimg(custom_element.move_enter_element));
+  else if (id == ED_DRAWING_ID_CUSTOM_MOVE_LEAVE)
+    DrawMiniGraphicExt(drawto, gi->x, gi->y,
+                      el2edimg(custom_element.move_leave_element));
   else if (id == ED_DRAWING_ID_CUSTOM_CHANGE_TARGET)
     DrawMiniGraphicExt(drawto, gi->x, gi->y,
                       el2edimg(custom_element_change.target_element));
@@ -6218,6 +6247,8 @@ static void DrawPropertiesConfig()
 
     /* draw drawing area gadgets */
     DrawCustomContentArea();
+    MapDrawingArea(ED_DRAWING_ID_CUSTOM_MOVE_ENTER);
+    MapDrawingArea(ED_DRAWING_ID_CUSTOM_MOVE_LEAVE);
 
     /* draw text input gadgets */
     MapTextInputGadget(ED_TEXTINPUT_ID_ELEMENT_NAME);
@@ -7161,6 +7192,18 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
 
          CopyCustomElementPropertiesToGame(properties_element);
        }
+       else if (id == GADGET_ID_CUSTOM_MOVE_ENTER)
+       {
+         custom_element.move_enter_element = new_element;
+
+         CopyCustomElementPropertiesToGame(properties_element);
+       }
+       else if (id == GADGET_ID_CUSTOM_MOVE_LEAVE)
+       {
+         custom_element.move_leave_element = new_element;
+
+         CopyCustomElementPropertiesToGame(properties_element);
+       }
        else if (id == GADGET_ID_CUSTOM_CHANGE_TARGET)
        {
          custom_element_change.target_element = new_element;
@@ -7295,6 +7338,10 @@ static void HandleDrawingAreas(struct GadgetInfo *gi)
        PickDrawingElement(button, custom_element.gfx_element);
       else if (id == GADGET_ID_CUSTOM_CONTENT)
        PickDrawingElement(button, custom_element.content[sx][sy]);
+      else if (id == GADGET_ID_CUSTOM_MOVE_ENTER)
+       PickDrawingElement(button, custom_element.move_enter_element);
+      else if (id == GADGET_ID_CUSTOM_MOVE_LEAVE)
+       PickDrawingElement(button, custom_element.move_leave_element);
       else if (id == GADGET_ID_CUSTOM_CHANGE_TARGET)
        PickDrawingElement(button, custom_element_change.target_element);
       else if (id == GADGET_ID_CUSTOM_CHANGE_CONTENT)
@@ -8072,7 +8119,6 @@ void HandleEditorGadgetInfoText(void *ptr)
 static void HandleDrawingAreaInfo(struct GadgetInfo *gi)
 {
   static int start_lx, start_ly;
-  char *infotext;
   int id = gi->custom_id;
   int sx = gi->event.x;
   int sy = gi->event.y;
@@ -8082,6 +8128,11 @@ static void HandleDrawingAreaInfo(struct GadgetInfo *gi)
   int max_sx = gi->drawing.area_xsize - 1;
   int max_sy = gi->drawing.area_ysize - 1;
   int actual_drawing_function = drawing_function;
+  int max_infotext_len = getMaxInfoTextLength();
+  char infotext[MAX_OUTPUT_LINESIZE + 1];
+  char *text;
+
+  infotext[0] = '\0';          /* start with empty info text */
 
   /* pressed Control key: simulate picking element */
   if (GetKeyModState() & KMOD_Control)
@@ -8129,41 +8180,48 @@ static void HandleDrawingAreaInfo(struct GadgetInfo *gi)
        switch (actual_drawing_function)
        {
          case GADGET_ID_SINGLE_ITEMS:
-           infotext = "Drawing single items";
+           text = "Drawing single items";
            break;
          case GADGET_ID_CONNECTED_ITEMS:
-           infotext = "Drawing connected items";
+           text = "Drawing connected items";
            break;
          case GADGET_ID_LINE:
-           infotext = "Drawing line";
+           text = "Drawing line";
            break;
          case GADGET_ID_ARC:
-           infotext = "Drawing arc";
+           text = "Drawing arc";
            break;
          case GADGET_ID_TEXT:
-           infotext = "Setting text cursor";
+           text = "Setting text cursor";
            break;
          case GADGET_ID_RECTANGLE:
-           infotext = "Drawing rectangle";
+           text = "Drawing rectangle";
            break;
          case GADGET_ID_FILLED_BOX:
-           infotext = "Drawing filled box";
+           text = "Drawing filled box";
            break;
          case GADGET_ID_FLOOD_FILL:
-           infotext = "Flood fill";
+           text = "Flood fill";
            break;
          case GADGET_ID_GRAB_BRUSH:
-           infotext = "Grabbing brush";
+           text = "Grabbing brush";
            break;
          case GADGET_ID_PICK_ELEMENT:
-           infotext = "Picking element";
+           text = "Picking element";
            break;
 
          default:
-           infotext = "Drawing position";
+           text = "Drawing position";
            break;
        }
 
+#if 1
+       if (actual_drawing_function == GADGET_ID_PICK_ELEMENT)
+         sprintf(infotext, "%s: %d, %d", text, lx, ly);
+       else
+         sprintf(infotext, "%s: %d, %d", text,
+                 ABS(lx - start_lx) + 1, ABS(ly - start_ly) + 1);
+#else
        if (actual_drawing_function == GADGET_ID_PICK_ELEMENT)
          DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
                    "%s: %d, %d", infotext, lx, ly);
@@ -8171,13 +8229,21 @@ static void HandleDrawingAreaInfo(struct GadgetInfo *gi)
          DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
                    "%s: %d, %d", infotext,
                    ABS(lx - start_lx) + 1, ABS(ly - start_ly) + 1);
+#endif
       }
+#if 1
+      else if (actual_drawing_function == GADGET_ID_PICK_ELEMENT)
+       strncpy(infotext, getElementInfoText(Feld[lx][ly]), max_infotext_len);
+      else
+       sprintf(infotext, "Level position: %d, %d", lx, ly);
+#else
       else if (actual_drawing_function == GADGET_ID_PICK_ELEMENT)
        DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
                  "%s", getElementInfoText(Feld[lx][ly]));
       else
        DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
                  "Level position: %d, %d", lx, ly);
+#endif
     }
 
     /* misuse this function to draw brush cursor, if needed */
@@ -8191,71 +8257,66 @@ static void HandleDrawingAreaInfo(struct GadgetInfo *gi)
   }
   else if (actual_drawing_function == GADGET_ID_PICK_ELEMENT)
   {
+    int element = EL_EMPTY;
+
     if (id == GADGET_ID_AMOEBA_CONTENT)
-      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
-               getElementInfoText(level.amoeba_content));
+      element = level.amoeba_content;
     else if (id == GADGET_ID_CUSTOM_GRAPHIC)
-      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
-               getElementInfoText(custom_element.gfx_element));
+      element = custom_element.gfx_element;
     else if (id == GADGET_ID_CUSTOM_CONTENT)
-      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
-               getElementInfoText(custom_element.content[sx][sy]));
+      element = custom_element.content[sx][sy];
+    else if (id == GADGET_ID_CUSTOM_MOVE_ENTER)
+      element = custom_element.move_enter_element;
+    else if (id == GADGET_ID_CUSTOM_MOVE_LEAVE)
+      element = custom_element.move_leave_element;
     else if (id == GADGET_ID_CUSTOM_CHANGE_TARGET)
-      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
-               getElementInfoText(custom_element_change.target_element));
+      element = custom_element_change.target_element;
     else if (id == GADGET_ID_CUSTOM_CHANGE_CONTENT)
-      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
-               getElementInfoText(custom_element_change.content[sx][sy]));
+      element = custom_element_change.content[sx][sy];
     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));
+      element = 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]));
+      element = 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));
+      element = random_placement_background_element;
     else if (id >= GADGET_ID_ELEMENT_CONTENT_0 &&
             id <= GADGET_ID_ELEMENT_CONTENT_7)
-    {
-      int i = id - GADGET_ID_ELEMENT_CONTENT_0;
+      element = level.yamyam_content[id - GADGET_ID_ELEMENT_CONTENT_0][sx][sy];
 
-      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, "%s",
-               getElementInfoText(level.yamyam_content[i][sx][sy]));
-    }
+    strncpy(infotext, getElementInfoText(element), max_infotext_len);
   }
   else
   {
     if (id == GADGET_ID_AMOEBA_CONTENT)
-      DrawTextS(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
-               "Amoeba content");
+      strcpy(infotext, "Amoeba content");
     else if (id == GADGET_ID_CUSTOM_GRAPHIC)
-      DrawTextS(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
-               "Custom graphic element");
+      strcpy(infotext, "Custom graphic element");
     else if (id == GADGET_ID_CUSTOM_CONTENT)
-      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
-               "Custom element content position: %d, %d", sx, sy);
+      sprintf(infotext, "Custom element content position: %d, %d", sx, sy);
+    else if (id == GADGET_ID_CUSTOM_MOVE_ENTER)
+      strcpy(infotext, "Element that can be digged/collected");
+    else if (id == GADGET_ID_CUSTOM_MOVE_LEAVE)
+      strcpy(infotext, "Element that will be left behind");
     else if (id == GADGET_ID_CUSTOM_CHANGE_TARGET)
-      DrawTextS(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
-               "New element after change");
+      strcpy(infotext, "New element after change");
     else if (id == GADGET_ID_CUSTOM_CHANGE_CONTENT)
-      DrawTextS(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
-               "New extended elements after change");
+      strcpy(infotext, "New extended elements after change");
     else if (id == GADGET_ID_CUSTOM_CHANGE_TRIGGER)
-      DrawTextS(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
-               "Other element triggering change");
+      strcpy(infotext, "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);
+      sprintf(infotext, "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");
+      strcpy(infotext, "Random placement background");
     else if (id >= GADGET_ID_ELEMENT_CONTENT_0 &&
             id <= GADGET_ID_ELEMENT_CONTENT_7)
-      DrawTextF(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2,
-               "Content area %d position: %d, %d",
-               id - GADGET_ID_ELEMENT_CONTENT_0 + 1, sx, sy);
+      sprintf(infotext, "Content area %d position: %d, %d",
+             id - GADGET_ID_ELEMENT_CONTENT_0 + 1, sx, sy);
   }
+
+  infotext[max_infotext_len] = '\0';
+
+  if (strlen(infotext) > 0)
+    DrawTextS(INFOTEXT_XPOS - SX, INFOTEXT_YPOS - SY, FONT_TEXT_2, infotext);
 }
 
 void RequestExitLevelEditor(boolean ask_if_level_has_changed)