package tris

func (p Placement) Floor(f Field) bool {
	fp := p
	fp.Y++
	return fp.Collide(f)
}

func (p Placement) Move(f Field, rot Rotation, x, y int) (np Placement, floor, topout bool) {
	np = p
	np.Rot = rot
	np.X = x
	np.Y = y
	if !np.Collide(f) { // free air
		return np, np.Floor(f), false
	}
	np = p // last resort reset p
	if np.Floor(f) && np.Y < 0 {
		return np, true, true
	}
	return np, np.Floor(f), false
}