draw_move_node_shadow = function()
	if dist(vx(Move.node.x), vy(Move.node.y), vx(Move.oldx), vy(Move.oldy)) > 10 then
		-- signal that a move will cause collisions
		App.color{r=0.8, g=0.8, b=0.8}
		love.graphics.rectangle('fill',
		vx(Move.node.pos.x-Move.node.hs.x),
		vy(Move.node.pos.y-Move.node.hs.y),
		scale(Move.node.hs.x*2),
		scale(Move.node.hs.y*2))

		-- show original location of node, to help put it back
		love.graphics.rectangle('line', vx(Move.oldx), vy(Move.oldy), scale(Move.node.w), scale(Move.node.h))
	end
end