package {
	public class Direction {
		public static const NORTH:int = 0;
		public static const EAST:int = 1;
		public static const SOUTH:int = 2;
		public static const WEST:int = 3;
		
		public static function toVector(direction:int):Vector2 {
			switch (direction) {
				case NORTH:
					return new Vector2(0, -1);
				case EAST:
					return new Vector2(1, 0);
				case SOUTH:
					return new Vector2(0, 1);
				case WEST:
					return new Vector2(-1, 0);
			}
			return null;
		}
	}
}