PBO-C EAS : Bishop

package chessgui.pieces;

import chessgui.Board;

public class Bishop extends Piece {

    public Bishop(int x, int y, boolean is_white, String file_path, Board board)
    {
        super(x,y,is_white,file_path, board);
    }

    @Override
    public boolean canMove(int destination_x, int destination_y){
        // Jika posisi target sudah ada buah catur dan itu milik kita, tidak boleh jalan
        Piece target = board.getPiece(destination_x, destination_y);
        if(target != null){
            if(target.isWhite() && this.isWhite()) return false;
            if(target.isBlack() && this.isBlack()) return false;
        }

        // Jika posisi target tidak miring, tidak boleh jalan
        if(Math.abs(this.getX() - destination_x) != Math.abs(this.getY() - destination_y)) return false;

        // Mencari arah dari target
        String arah = "";
        if(destination_y > this.getY()) arah+= "atas";
        if(destination_y < this.getY()) arah+= "bawah";
        if(destination_x > this.getX()) arah+= "kanan";
        if(destination_x < this.getX()) arah+= "kiri";

        // Cek jika ada buah catur lain disepanjang jalan menuju posisi target
        // Jika ada, tidak boleh jalan
        if(arah.equals("ataskanan")){
            int jarak = Math.abs(destination_y - this.getY());
            for(int i=1; i<jarak; i++){
                Piece jalur = board.getPiece(this.getX()+i,this.getY()+i);
                if(jalur != null) return false;
            }
        }else if(arah.equals("ataskiri")){
            int jarak = Math.abs(destination_y - this.getY());
            for(int i=1; i<jarak; i++){
                Piece jalur = board.getPiece(this.getX()-i,this.getY()+i);
                if(jalur != null) return false;
            }
        }else if(arah.equals("bawahkanan")){
            int jarak = Math.abs(destination_y - this.getY());
            for(int i=1; i<jarak; i++){
                Piece jalur = board.getPiece(this.getX()+i,this.getY()-i);
                if(jalur != null) return false;
            }
        }else if(arah.equals("bawahkiri")){
            int jarak = Math.abs(destination_y - this.getY());
            for(int i=1; i<jarak; i++){
                Piece jalur = board.getPiece(this.getX()-i,this.getY()-i);
                if(jalur != null) return false;
            }
        }
        return true;
    }
}