gistfile1.txt

Layer.tick : (dT) ->
  sprite_nodes.map (s) ->
		loc = s.getLocation()
		unless s.vel?
			s.vel = cc.p (Math.random() - 0.5) * 10, (Math.random() - 0.5) * 10

		s.setLocation cc.p loc.x + s.vel.x * dT, loc.y + s.vel.y * dT

	bboxes = sprite_nodes.map (n) -> n.getBoundingBox()

	for i in [0..bbox.length-1]
		for j in [i+1...bbox.length-1]
			if cc.rectContainsRect bboxes[i], bboxes[j]
				sprite_nodes[i].vel = cc.p 0, 0
				sprite_nodes[j].vel = cc.p 0, 0