restorablebuttoneventlistener.java

Java版拼图游戏

/*
 * @(#)RestorableButtonListener.java 1.0 03/08/22
 * Copyright 2003 Entao Zhang, All rights reserved.
 */

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

/**
 * 拼图一般方式的事件处理类(仅鼠标事件)
 */
public class RestorableButtonEventListener extends
		ComponentsEventListener implements ActionListener{
	private int loc,locX,locY;
	private int swapX,swapY;
	private int temp,x,swap;
	private int grids[];

	public RestorableButtonEventListener(ImageRevertUnitPane ir){
		super(ir);
	}

	public void addListener(Component c){
		((JButton)c).addActionListener(this);
	}
	
	public void actionPerformed(ActionEvent e){
		if (ir.isConfused()){
			x=ir.x;
			grids=ir.grids;
			swap=ir.swap;

			loc=Integer.parseInt(((Component)e.getSource()).getName());
			locX=loc%x;	locY=loc/x;
			swapX=swap%x; swapY=swap/x;
				if (swapX==locX | swapY==locY){
				ir.cm.swapStateChange(true);
				temp=grids[swap];
				int step=(swapX==locX)?(swapY<locY?x:-x):(swapX<locX?1:-1);
				for(int i=swap ;i!=loc ;i+=step ){
					grids[i]=grids[i+step];
					ir.cm.componentStateChange(i);
				}
				grids[loc]=temp;
				ir.swap=loc;
				ir.cm.swapStateChange(false);
				ir.isDone();
			}else{
				//附加功能.
			}
		}
		else{
			ir.questionToStart();
		}
	}
}