/*
for (int i = 0; i < solids.Count; i++) {
	// standing on top
	if (!(penguin.x - penguin.ex > solids[i].X + tile_ext || penguin.x + penguin.ex < solids[i].X - tile_ext)) {
		if (penguin.y + penguin.ey >= solids[i].Y - tile_ext && penguin.y + penguin.ey <= solids[i].Y) {
			penguin.vely = 0;
			penguin.y = solids[i].Y - tile_ext - penguin.ey;
			onground = true;
		}
	}
}
*/