package mightypork.rogue.world;


public class Sides {

	//@formatter:off
	public static final byte NW = (byte) 0b10000000;
	public static final byte N  = 0b01000000;
	public static final byte NE = 0b00100000;
	public static final byte E  = 0b00010000;
	public static final byte SE = 0b00001000;
	public static final byte S  = 0b00000100;
	public static final byte SW = 0b00000010;
	public static final byte W  = 0b00000001;
	
	public static final byte CARDINAL = N|S|E|W;
	public static final byte DIAGONAL = NE|NW|SE|SW;
	
	public static final byte NW_CORNER = W|NW|N;
	public static final byte NE_CORNER = E|NE|N;
	public static final byte SW_CORNER = W|SW|S;
	public static final byte SE_CORNER = E|SE|S;
	
	private final static Coord[] side = {
			Coord.make(-1, -1),
			Coord.make(0, -1),
			Coord.make(1, -1),
			Coord.make(1, 0),
			Coord.make(1, 1),
			Coord.make(0, 1),
			Coord.make(-1, 1),
			Coord.make(-1, 0)
	};
	//@formatter:on

	public static Coord get(int i)
	{
		return side[i]; // FIXME Coord is mutable
	}

	public static byte bit(int i)
	{
		return (byte) (1 << (7 - i));
	}
}