--- a/mamba/snake.py	Sun Sep 11 21:47:44 2011 +0200
+++ b/mamba/snake.py	Sun Sep 11 22:00:18 2011 +0200
@@ -2,20 +2,24 @@
 
 from pygame.sprite import Group
 from pygame.locals import BLEND_MULT
+from pygame.draw import aalines
 
-from mamba.sprites import BaseSprite
+from mamba.sprites import BaseSprite, tile_sizify
 from mamba import mutators
 
 
 class Snake(object):
 
     UP, DOWN, LEFT, RIGHT = [(0, -1), (0, 1), (-1, 0), (1, 0)]
+    SPEED = 20.0  # pixels / s
 
     def __init__(self, tile_pos, orientation):
         self.segments = self.create_segments(tile_pos, orientation)
         self.segment_group = Group()
         self.segment_group.add(*self.segments)
         self.set_orientation(orientation)
+        self.pos = tile_sizify(tile_pos)
+        self.length = 3.0
 
     head = property(fget=lambda self: self.segments[0])
     tail = property(fget=lambda self: self.segments[-1])
@@ -29,17 +33,21 @@
                 ]
 
     def draw(self, surface):
-        self.segment_group.draw(surface)
+        # self.segment_group.draw(surface)
+        x, y = self.pos
+        aalines(surface, (0, 0, 255), False, [(x, y), (x + 60, y)])
 
     def update(self, dt):
-        pass
+        x, y = self.pos
+        ox, oy = self.orientation
+        ds = self.SPEED * dt
+        self.pos = (x + ox * ds, y + oy * ds)
 
     def set_orientation(self, orientation):
         self.orientation = orientation
         #self.orientation = orientation
         #for segment in self.segments:
         #    segment.set_orientation(self)
-        print orientation
 
 
 class Segment(BaseSprite):