(building) SUpport loading groudsprites with different height

Author: ahyangyi

agrf/lib/building/image_sprite.py

@@ -2,16 +2,16 @@
 from agrf.graphics import SCALE_TO_ZOOM
 
 
-def image_sprite(path, crop=True, child=False):
+def image_sprite(path, y=127, crop=True, child=False):
     return grf.AlternativeSprites(
         grf.FileSprite(
             grf.ImageFile(path),
             0,
             0,
             256,
-            127,
+            y,
             xofs=0 if child else -124,
-            yofs=0,
+            yofs=127 - y,
             bpp=32,
             zoom=SCALE_TO_ZOOM[4],
             crop=crop,