fn offset_piece_kind(
kind: &MineshaftPieceKind,
room_child_entrance_boxes: &[BoundingBox],
y_offset: i32,
) -> MineshaftPieceKindfn offset_piece_kind(
kind: &MineshaftPieceKind,
room_child_entrance_boxes: &[BoundingBox],
y_offset: i32,
) -> MineshaftPieceKind