--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gamelib/animations.py	Fri Sep 04 20:23:30 2009 +0000
@@ -0,0 +1,52 @@
+"""Animation Loops"""
+
+from pgu.vid import Sprite
+
+import imagecache
+from misc import Position
+
+class Animation(Sprite):
+    """Animation loop.
+
+       These are derived from sprites, since they behave similiary in most
+       respects, but, to ensure draw ordering, we don't add them to
+       the sprites list.
+       
+       Ideally, animations should be quite short."""
+
+    def __init__(self, sequence, tile_pos):
+        # Create the first frame
+        self.iter = iter(sequence)
+        Sprite.__init__(self, self.iter.next(), (-1000, -1000))
+        if hasattr(tile_pos, 'to_tuple'):
+            self.pos = tile_pos
+        else:
+            self.pos = Position(tile_pos[0], tile_pos[1])
+        self.removed = False
+
+    def fix_pos(self, tv):
+        ppos = tv.tile_to_view(self.pos.to_tuple())
+        self.rect.x = ppos[0]
+        self.rect.y = ppos[1]
+
+    def animate(self):
+        """Step to the next frame.
+
+           Set removed flag when we hit the end of the sequence"""
+        try:
+            self.setimage(self.iter.next())
+        except StopIteration:
+            self.removed = True
+
+class MuzzleFlash(Animation):
+
+    SEQUENCE_LEFT = [imagecache.load_image('sprites/muzzle_flash.png')]
+    SEQUENCE_RIGHT = [imagecache.load_image('sprites/muzzle_flash.png',
+        ("right_facing",))]
+
+    def __init__(self, chicken):
+        if chicken.facing == 'right':
+            Animation.__init__(self, self.SEQUENCE_RIGHT, chicken.pos)
+        else:
+            Animation.__init__(self, self.SEQUENCE_LEFT, chicken.pos)
+