snakepanel.java

这是一个Java写的贪吃蛇源码

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

public class SnakePanel extends JPanel 
		implements Runnable,KeyListener{
	
	public SnakePanel(SnakeFrame parent){
		
		this.parent=parent;
		
		grids=new JPanel[row][col];
		others=new LinkedList();
		snakeBody=new LinkedList();
		snakeHead=new ArrayIndexReadOnly(0,0);
		tempBlock=new ArrayIndexReadOnly(0,0);
		direction=new ArrayIndex(0,1);
		
		setLayout(new GridLayout(row,col,1,1));
		
		for(int i=0;i<row;i++){
			for(int j=0;j<col;j++){
				grids[i][j]=new JPanel();
				grids[i][j].setBackground(othersColor);
				add(grids[i][j]);
			}
		}
		
		addKeyListener(this);
	}
	
	public void newGame(long speedTime){
		this.speedTime=speedTime;
				
		if (gameHaveExit) {
		
			snake.initializeV();
		}else{
			//System.out.println("gameHaveExit=false");
			snake=new SnakeModel(row,col);
			gameHaveExit=true;
			t=new Thread(this);
			t.start();

		}
		
		requestFocus();
		direction.setX(0);
		direction.setY(1);
		gameScore=0;
		updateTextFiled(""+gameScore);
		isEnd=false;
		
	}
	public void stopGame(){
		
		requestFocus();
		isEnd=true;
	}

	public void resumeGame(){
		
		requestFocus();	
		isEnd=false;	
	}
	public int getGameScore(){
		return gameScore;
	}
	private void updateTextFiled(String str){
		((SnakeFrame)parent).scoreField.setText(str);
	}
	private void updateBg(){
		
		snakeBody=snake.getSnake();
		Iterator e =snakeBody.iterator();
		while(e.hasNext()){
			ArrayIndexReadOnly t=(ArrayIndexReadOnly)(e.next());
			grids[t.getX()][t.getY()].setBackground(bodyColor);
		}
		//设定蛇头颜色
		snakeHead=snake.getSnakeHead();
		grids[snakeHead.getX()][snakeHead.getY()].setBackground(headColor);
		//设定背景颜色
		others=snake.getOthers();
		e =others.iterator();
		while(e.hasNext()){
			ArrayIndexReadOnly t=(ArrayIndexReadOnly)(e.next());
			grids[t.getX()][t.getY()].setBackground(othersColor);
		}
		//设定临时块的颜色
		tempBlock=snake.getTempBlock();
		grids[tempBlock.getX()][tempBlock.getY()].setBackground(tempColor);		
	}
	// allow panel to get input focus
	public boolean isFocusTraversable()
	{  
		return true; 
	}	
	
	//实现Runnable接口
	public void run(){
		
			while(true){
				
			try{
				Thread.sleep(speedTime);
			}catch (InterruptedException e){}
				if(!isEnd){
					isEnd=!snake.move(direction);
					updateBg();
					if(snake.getReadyAddScore()){
						gameScore+=1;
						updateTextFiled(""+gameScore);
					}
				}
									
			}		
	}
	
	//实现KeyListener接口;;;;;;;;;;;;{
	
	public void keyPressed(KeyEvent event)
	      {  
	         int keyCode = event.getKeyCode();

			 if(gameHaveExit){
		         if (keyCode == KeyEvent.VK_LEFT) {

		         	direction.setX(0);
		         	direction.setY(-1);		         		
		         	

		         	
		         }
		         else if (keyCode == KeyEvent.VK_RIGHT) {

		         	direction.setX(0);
		         	direction.setY(1);		         		
		         	
		         }
		         else if (keyCode == KeyEvent.VK_UP) {


		         	direction.setX(-1);
		         	direction.setY(0);		         		
		         	
		         	
		         }
		         else if (keyCode == KeyEvent.VK_DOWN) {


		         	direction.setX(1);
		         	direction.setY(0);		         		
		         	
		         	
		         }			 	
				 else if (keyCode == KeyEvent.VK_ENTER){
				 	isEnd=!isEnd;
				 }			 	
			 }
		 

	      }
		public void keyReleased(KeyEvent event){}
		public void keyTyped(KeyEvent event){}	
		
		//实现KeyListener接口;;;;;;;;;;;;}
		
		
		//数据成员
		JFrame parent=new JFrame();
		private int row=15;
		private int col=25;
		private JPanel[][] grids;
		private ArrayIndex direction;
		
		private SnakeModel snake;
		private LinkedList snakeBody;
		private LinkedList others;
		private ArrayIndexReadOnly snakeHead;
		private ArrayIndexReadOnly tempBlock;
		
		private long speedTime;
		private Color bodyColor=Color.red;
		private Color headColor=Color.green;
		private Color tempColor=Color.orange;
		private Color othersColor=Color.blue;
		private int gameScore=0;
		private boolean readyAddScore;
		
		private Thread t; 
		private boolean isEnd;
		private static boolean gameHaveExit;
}