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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, false, false
}
np = p // last resort reset p
if np.Floor(f) && np.Y < 0 {
return np, true, true
}
return np, np.Floor(f), false
}
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