fixed bug when checking out-of-bounds frames im graphics definitions

- this bug was caused by getFixedGraphicSource() always using 32x32 tile
  size even if element graphic was defined using smaller tile size like
  16x16, resulting in correct definitions to be assumed as out of bounds
- fixed by using getGraphicSourceXY() instead, which only uses width and
  height attributes (which are set to the correct tile size for elements)

diff --git a/src/init.c b/src/init.c
index 54f4277d736fc9843ce9a583c9983dc10fc0782e..6980eb9aecf61ac491540be33597d16563365fb1 100644 (file)
--- a/src/init.c
+++ b/src/init.c
@@ -1717,10 +1717,10 @@ static void InitGraphicInfo()
 
   for (i = 0; i < num_images; i++)
   {
-    Bitmap *src_bitmap;
+    Bitmap *src_bitmap = graphic_info[i].bitmap;
     int src_x, src_y;
     int width, height;
-    int first_frame, last_frame;
+    int last_frame;
     int src_bitmap_width, src_bitmap_height;
 
     /* now check if no animation frames are outside of the loaded image */
@@ -1738,9 +1738,7 @@ static void InitGraphicInfo()
 
     /* check if first animation frame is inside specified bitmap */
 
-    first_frame = 0;
-    getFixedGraphicSource(i, first_frame, &src_bitmap, &src_x, &src_y);
-
+    /* do not use getGraphicSourceXY() here to get position of first frame; */
     /* this avoids calculating wrong start position for out-of-bounds frame */
     src_x = graphic_info[i].src_x;
     src_y = graphic_info[i].src_y;
@@ -1770,12 +1768,15 @@ static void InitGraphicInfo()
       Error(ERR_INFO_LINE, "-");
 
       graphic_info[i] = graphic_info[fallback_graphic];
+
+      /* if first frame out of bounds, do not check last frame anymore */
+      continue;
     }
 
     /* check if last animation frame is inside specified bitmap */
 
     last_frame = graphic_info[i].anim_frames - 1;
-    getFixedGraphicSource(i, last_frame, &src_bitmap, &src_x, &src_y);
+    getGraphicSourceXY(i, last_frame, &src_x, &src_y, FALSE);
 
     if (src_x < 0 || src_y < 0 ||
        src_x + width  > src_bitmap_width ||