ju.java

SWT实现人人的象棋程序 供学习SWT的同志做个参考

package com.catking.chess;

import java.util.HashSet;
import java.util.Set;

import com.catking.Utility.*;


public class Ju extends Chess{

	public Ju(int color){
		super(color);
		
		this.name = '車';
	}
	@Override
	public void go() {
		// TODO Auto-generated method stub
		System.out.print("车");
	}
	@Override
	public Set<Position> availableSteps() {
		// TODO Auto-generated method stub
		Set<Position> set = new HashSet<Position>();
		
		//left
		int temp = y;
		while(temp-- != 0){
			if(!add(set, x, temp))
				break;
		}
		//right
		temp = y;
		while(temp++ != ChessPane.COLS-1){
			if(!add(set, x, temp))
				break;
		}
		//up
		temp = x;
		while(temp-- != 0){
			if(!add(set, temp, y))
				break;
		}
		//down
		temp = x;
		while(temp++ != ChessPane.ROWS-1){
			if(!add(set, temp, y))
				break;
		}
		
		//System.out.println("有"+set.size()+"条道路");
		return set;
	}
	private boolean add(Set<Position>set, int x, int y){
		int clr = ChessPane.chesses[x][y].color;
		//不是同色的棋子
		if( clr != color){
			set.add(new Position(x, y));
			//遇到了第一个对方的棋子
			return clr == KONG;
		}
		return false;
	}

}