Direction.java

gehe zur Dokumentation dieser Datei

package de.lathanda.eos.base.util;
public enum Direction {
    SOUTH( 0,-1, 0),
    WEST(-1, 0, 1),
    NORTH( 0, 1, 2),
    EAST( 1, 0, 3);
    static {
        WEST.left = SOUTH;
        WEST.right = NORTH;
        EAST.left = NORTH;
        EAST.right = SOUTH;
        NORTH.left = WEST;
        NORTH.right = EAST;
        SOUTH.left = EAST;
        SOUTH.right = WEST;
    }
    public final int dx;
    public final int dy;
    public final int index;
    private Direction left;
    private Direction right;
    private Direction(int dx, int dy, int index) {
        this.dx = dx;
        this.dy = dy;
        this.index = index;
    }
    public final Direction getLeft() {
        return left;
    }
    public final Direction getRight() {
        return right;
    }
    public Direction getBack() {
        return left.left;
    }
    public static Direction getDirection(int index) {
        switch(index) {
        case 0: return SOUTH;
        case 1: return WEST;
        case 2: return NORTH;
        case 3: return EAST;
        default:
            return EAST;
        }
    }
    public float getAngle() {
        switch(index) {
        case 0: return 180f;
        case 1: return 90f;
        case 2: return 0f;
        case 3: return 270f;
        default:
            return 270;
        }       
    }
    @Override
    public String toString() {
        switch (this) {
        case EAST:
            return "E";
        case SOUTH:
            return "S";
        case NORTH:
            return "N";
        case WEST:
            return "W";         
        }
        return "";
    }
    
}