Minestom/src/main/java/net/minestom/server/utils/Direction.java

package net.minestom.server.utils;

public enum Direction {
    NORTH(0, 0, -1),
    EAST(1, 0, 0),
    SOUTH(0, 0, 1),
    WEST(-1, 0, 0),
    UP(0, 1, 0),
    DOWN(0, -1, 0);

    public static final Direction[] HORIZONTAL = { SOUTH, WEST, NORTH, EAST };

    private final int normalX;
    private final int normalY;
    private final int normalZ;

    Direction(int normalX, int normalY, int normalZ) {
        this.normalX = normalX;
        this.normalY = normalY;
        this.normalZ = normalZ;
    }

    public int normalX() {
        return normalX;
    }

    public int normalY() {
        return normalY;
    }

    public int normalZ() {
        return normalZ;
    }

    public Direction opposite() {
        switch (this) {
            case UP:
                return DOWN;
            case DOWN:
                return UP;
            case EAST:
                return WEST;
            case WEST:
                return EAST;
            case NORTH:
                return SOUTH;
            case SOUTH:
                return NORTH;
            default:
                throw new IllegalArgumentException();
        }
    }
}