Knight.java

import java.lang.Math;

public class Knight extends Empty {
    //inherits location, symbol
    public Knight(int _color) {
        super(_color);
        this.symbols = new String[2];
        this.symbols[0] = "♘";
        this.symbols[1] = "♞";
    }

    public boolean move(Empty[][] map, int[] attempt, int[] location) {
        int aX = attempt[0];
        int aY = attempt[1];
        Empty selected = map[aY][aX];
        
        if(selected.color == this.color) {
            return false;
        }

        if(Math.abs(aX - location[0]) > 2 || Math.abs(aY - location[1]) > 2) {
            return false;
        }
        if(Math.abs(aX - location[0]) < 1 || Math.abs(aY - location[1]) < 1) {
            return false;
        }
        if(Math.abs(aX - location[0]) == Math.abs(aY - location[1])) {
            return false;
        }
        return true;
    }
}