Java--贪吃蛇

今天仿照网上代码写了一个贪吃蛇游戏，有六个类：

Node类

package snake;

public class Node {//节点类，代表蛇身
    private int nodeX;
    private int nodeY;
    public int getNodeX(){
        return nodeX;
    }
    public int getNodeY(){
        return nodeY;
    }
    public void setNodeX(int nodeX) {
        this.nodeX = nodeX;
    }

    public void setNodeY(int nodeY) {
        this.nodeY = nodeY;
    }

    public Node(int nodeX, int nodeY){
        this.nodeX=nodeX;
        this.nodeY=nodeY;
    }
}

　　Snake类

package snake;

import java.util.LinkedList;
import java.util.Random;

public class Snake {//蛇
    private LinkedList<Node> snakeBody;
    private Random random;

    private int direction=0;//方向
    private SnakeGameView snakeGameView;
    public Snake(int snakeHeadX,int snakeHeadY,SnakeGameView snakeGameView){
        random=new Random();
        snakeBody=new LinkedList<>();
        snakeBody.add(new Node(snakeHeadX,snakeHeadY));
        this.snakeGameView=snakeGameView;
    }
    public int getDirection() {
        return direction;
    }

    public void setDirection(int direction) {
        this.direction = direction;
    }
    public Node getSnakeHead(){
        return snakeBody.getFirst();//获取头结点
    }
    public Node getSnakeTail(){
        return snakeBody.getLast();//获取尾结点
    }
    public LinkedList<Node> getSnakeBody() {
        return snakeBody;//身体
    }
public void snakeMove(){//移动
        switch(direction){
            case 0: snakeBody.addFirst(new Node(getSnakeHead().getNodeX(),getSnakeHead().getNodeY()-DrawView.VIEW_NUMBER));
            break;
            case 1:
                snakeBody.addFirst(new Node(getSnakeHead().getNodeX() + DrawView.VIEW_NUMBER,getSnakeHead().getNodeY()));
                break;
            case 2:
                snakeBody.addFirst(new Node(getSnakeHead().getNodeX(),getSnakeHead().getNodeY()+ DrawView.VIEW_NUMBER));
                break;
            case 3:
                snakeBody.addFirst(new Node(getSnakeHead().getNodeX() - DrawView.VIEW_NUMBER,getSnakeHead().getNodeY()));
                break;
        }
        snakeBody.removeLast();
}
public void eatEgg(Node egg){
        if(snakeBody.getFirst().getNodeX()==egg.getNodeX()&&snakeBody.getFirst().getNodeY()==egg.getNodeY()){
            snakeBody.add(egg);
            snakeGameView.setEgg(random.nextInt(DrawView.VIEW_WIDTH - 1) * DrawView.VIEW_NUMBER,
                    random.nextInt(DrawView.VIEW_WIDTH - 1) * DrawView.VIEW_NUMBER);
            SnakeGameView.gameScore = SnakeGameView.gameScore + 5;
            snakeGameView.getJTextArea().setText(SnakeGameView.gameScore + "");
            System.out.println("吃到蛋了");
        }
}
    public void snakeRunInterface() {//越界判断
        if(this.getSnakeHead().getNodeX() < 0 || this.getSnakeHead().getNodeY() < 0||
                this.getSnakeHead().getNodeX() > (DrawView.VIEW_WIDTH * DrawView.VIEW_NUMBER)||
                this.getSnakeHead().getNodeY() > (DrawView.VIEW_WIDTH * DrawView.VIEW_NUMBER)) {
            SnakeGameView.gameState = false;
        }
    }
}

　　

SnakeGameView类

package snake;
import javax.swing.*;
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Random;
public class SnakeGameView extends Frame{//游戏界面
    private JLabel jl;
    private DrawView drawView;
    private Panel panel;
    private JLabel scoreTitle;
    private JLabel score;
    private Panel rule;
    private JTextArea hint;

    private Random random;
    public static boolean gameState = true;
    public static int gameScore = 0;
    private Snake snake;
    private Node egg;
    private GameRunThread grt;
    private static Thread thread;

    public SnakeGameView() {

        random = new Random();
        //初始化Snake
        snake = new Snake(10 * DrawView.VIEW_NUMBER + random.nextInt(19) * DrawView.VIEW_NUMBER,
                10 * DrawView.VIEW_NUMBER + random.nextInt(19) * DrawView.VIEW_NUMBER,this);
        //初始化Egg
        egg = new Node(random.nextInt(DrawView.VIEW_WIDTH - 1) * DrawView.VIEW_NUMBER,
                random.nextInt(DrawView.VIEW_WIDTH - 1) * DrawView.VIEW_NUMBER);
        //初始化画板
        drawView = new DrawView(snake, egg);
        grt = new GameRunThread(drawView, snake);
        thread = new Thread(grt);

        jl = new JLabel("SnakeGame-3.0",JLabel.CENTER);
        panel = new Panel();
        scoreTitle = new JLabel("Score", JLabel.CENTER);
        score = new JLabel(gameScore + "", JLabel.CENTER);
        rule = new Panel();
        hint = new JTextArea("    操作方式\n      ↑\n  ←      →\n      ↓\n\n【Esc】退出程序\n\n关于\n");
    }
    //设置鸡蛋
    public void setEgg(int eggX, int eggY) {

        this.egg.setNodeX(eggX);
        this.egg.setNodeY(eggY);
    }
    //获得
    public JLabel getJTextArea() {
        return score;
    }
    //主方法
    public static void main(String[] args) {

        new SnakeGameView().showView();
        thread.start();
    }
    public void showView() {
        jl.setFont(new Font("宋体", 1, 18));//设置字体，0正常，1粗体
        jl.setForeground(Color.white);//设置颜色
        jl.setBounds(0, 0, DrawView.VIEW_HEIGHT * DrawView.VIEW_NUMBER + 70, 40);
        drawView.setBackground(new Color(51,51,51));
        drawView.setBounds(20, 50, DrawView.VIEW_WIDTH * DrawView.VIEW_NUMBER + 1, DrawView.VIEW_HEIGHT * DrawView.VIEW_NUMBER + 1);
        panel.setLayout(null);
        panel.setBackground(new Color(0,102,102));
        panel.setBounds(DrawView.VIEW_WIDTH * DrawView.VIEW_NUMBER + 40, 50, 150, DrawView.VIEW_HEIGHT * DrawView.VIEW_NUMBER);
        scoreTitle.setFont(new Font("宋体", 1, 18));//设置字体，0正常，1粗体
        scoreTitle.setForeground(Color.white);//设置颜色
        scoreTitle.setBounds(0, 0, 150, 50);
        score.setFont(new Font("宋体", 1, 20));//设置字体，0正常，1粗体
        score.setForeground(Color.white);//设置颜色
        score.setBounds(0, 50, 150, 40);
        rule.setBackground(new Color(0,128,128));
        rule.setBounds(0, 90, 150, 1);
        hint.setFont(new Font("宋体", 0, 16));//设置字体，0正常，1粗体
        hint.setBounds(10, 100, 130, 150);
        hint.setBackground(new Color(0,102,102));

        panel.add(scoreTitle);
        panel.add(score);
        panel.add(rule);
        panel.add(hint);
        this.add(jl);
        this.setTitle("SnakeGame-3.0");
        this.setSize(DrawView.VIEW_WIDTH * DrawView.VIEW_NUMBER + 210, DrawView.VIEW_HEIGHT * DrawView.VIEW_NUMBER + 70);
        this.setLocation(500, 200);
        this.setLayout(null);
        //this.setUndecorated(true);
        this.setBackground(new Color(0,128,128));
        this.add(drawView);
        this.add(panel);
        this.addKeyListener(new GameControl(snake));
        this.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                System.exit(0);
            }
        });
        this.setVisible(true);

    }

}

　　

DrawView类

package snake;

import java.awt.*;

public class DrawView extends Panel{
    //画板的宽度高度
    public static final int VIEW_WIDTH = 40;
    public static final int VIEW_HEIGHT = 40;
    public static final int VIEW_NUMBER = 15;
    private Image iBuffer;
    private Graphics gBuffer;
    private Snake snake;
    private Node egg;
    public DrawView(Snake snake, Node egg) {
        this.snake = snake;
        this.egg = egg;
    }

    public void paint(Graphics g) {

        snake.snakeMove();
        this.drawGridding(g);
        this.drawSnake(g);
        this.drawEgg(g);
        snake.eatEgg(egg);
        System.out.println("("+snake.getSnakeHead().getNodeX()+","+snake.getSnakeHead().getNodeY()+")");
    }
    public void update(Graphics g) {
        if(iBuffer==null)
        {
            iBuffer=createImage(DrawView.VIEW_WIDTH * DrawView.VIEW_NUMBER + 1, DrawView.VIEW_HEIGHT * DrawView.VIEW_NUMBER + 1);
            gBuffer=iBuffer.getGraphics();
        }
        gBuffer.setColor(getBackground());
        gBuffer.fillRect(0,0,DrawView.VIEW_WIDTH * DrawView.VIEW_NUMBER + 1, DrawView.VIEW_HEIGHT * DrawView.VIEW_NUMBER + 1);
        paint(gBuffer);
        g.drawImage(iBuffer,0,0,this);
    }
    //画表格
    public void drawGridding(Graphics g) {

        g.setColor(new Color(128,128,128));
        for(int i = 0; i < VIEW_WIDTH; i++) {
            g.drawLine(0, i * VIEW_NUMBER, VIEW_WIDTH * VIEW_NUMBER, i * VIEW_NUMBER);
        }
        for(int i = 0; i < VIEW_HEIGHT; i++) {
            g.drawLine(i * VIEW_NUMBER, 0, i * VIEW_NUMBER, VIEW_WIDTH * VIEW_NUMBER);
        }
    }
    //画蛇
    public void drawSnake(Graphics g) {

        for(int i = 0; i < snake.getSnakeBody().size(); i ++) {
            g.setColor(Color.white);
            if(i == 0)
                g.setColor(Color.lightGray);
            g.fillRect(snake.getSnakeBody().get(i).getNodeX(), snake.getSnakeBody().get(i).getNodeY(), VIEW_NUMBER, VIEW_NUMBER);
        }
    }
    //画食物
    public void drawEgg(Graphics g) {

        g.setColor(Color.yellow);
        g.fillRect(egg.getNodeX(), egg.getNodeY(), VIEW_NUMBER, VIEW_NUMBER);
    }
}

　　

GameRunThread类

package snake;

public class GameRunThread implements Runnable{//重画界面
    private int runTime=200;
    private DrawView drawView;
    private Snake snake;
    public GameRunThread(DrawView drawView,Snake snake){
        this.drawView=drawView;
        this.snake=snake;
    }
    public void run(){
        while(true){
            snake.snakeRunInterface();
            if(SnakeGameView.gameState){
                drawView.repaint();
                try{
                    Thread.sleep(runTime);
                }catch(InterruptedException e){
                    e.printStackTrace();
                }
            }
        }
    }
}

　　

GameControl类

package snake;

import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

public class GameControl implements KeyListener{//监听
    private Snake snake;
    public GameControl(Snake snake){
        this.snake=snake;
    }
    public void keyReleased(KeyEvent ke){
        switch(ke.getKeyCode()){
            case KeyEvent.VK_UP:
                snake.setDirection(0);
                break;
            case KeyEvent.VK_RIGHT:
                snake.setDirection(1);
                break;
            case KeyEvent.VK_DOWN:
                snake.setDirection(2);
                break;
            case KeyEvent.VK_LEFT:
                snake.setDirection(3);
                break;
            case KeyEvent.VK_ENTER:

                if (SnakeGameView.gameState == true)
                    SnakeGameView.gameState = false;
                else
                    SnakeGameView.gameState = true;

                break;
            case KeyEvent.VK_ESCAPE:
                System.exit(0);
                break;
        }
    }

    public void keyPressed(KeyEvent arg0) {
    }

    public void keyTyped(KeyEvent arg0) {
    }
        }