Method intersectsWith

src/main/java/fieldbox/boxes/Drops.java:33–37

(Box x, Vec2 position)

	}

	private boolean intersectsWith(Box x, Vec2 position) {
		Rect f = x.properties.get(Box.frame);
		if (f == null) return false;
		return f.intersects(position.get());
	}

	private Box selection(Box root) {
		return root.breadthFirst(root.both())