def move(self, dx, dy,speed=None) :
Movable.move(self,dx,dy,speed)
# Check if dummy is still on the grid (it won't be if my movement caused us both to die).
if self.dummy.square :
self.dummy.move(dx, dy, speed)
def move( self, dx, dy, speed=None ) :
Movable.move( self, dx, dy, speed )
for part in self.parts :
part.move( dx, dy, speed )
