local love=love
local max,min=math.max,math.min
local float=0
return function(y,key1,key2)
	if y>0 then
		float=max(float,0)+y^1.2
	elseif y<0 then
		if float>0 then float=0 end
		float=min(float,0)-(-y)^1.2
	end
	while float>=1 do
		love.keypressed(key1 or"up")
		float=float-1
	end
	while float<=-1 do
		love.keypressed(key2 or"down")
		float=float+1
	end
end