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package dukeman;

// @author Pavel Porvatov

public def ALL_DIRECTIONS = [
    Direction {
        offsetY: -1
    },
    Direction {
        offsetX: 1
    },
    Direction {
        offsetY: 1
    },
    Direction {
        offsetX: -1
    }
];
public class Direction {
    public var offsetX: Integer;		// Possible values are -1, 0 and 1
    public var offsetY: Integer;		// Possible values are -1, 0 and 1

    public function isEmpty(): Boolean {
        return offsetX == 0 and offsetY == 0;
    }
}