Java贪吃蛇游戏
package snake.game;
import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Insets;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Timer;
import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
public class SnakeGame implements ActionListener,KeyListener,MouseListener{
private long initTime ;
SnakeGame.InterClassSnake innerSnake;
boolean signal=false;
private Timer tim;
int douX=120,douY=120,direct;
private ArrayList<Point> snake = new ArrayList<Point>();
JFrame jf = new JFrame(“贪吃蛇游戏”);
JPanel mainPane = new JPanel();
//欢迎界面、开始界面、游戏界面
WelcomPanel wp = new WelcomPanel();
StartPanel sp = new StartPanel();
JPanel gamePane= new JPanel();
BallDemo bd ;
JButton [] btns = {new JButton(“下一步”),new JButton(“上一步”),new JButton(“开始”)};
Color[] yanse = {Color.black,Color.blue,Color.cyan,Color.green};
CardLayout gld= new CardLayout();
{
snake.add(new Point(90,150));
snake.add(new Point(90,120));
snake.add(new Point(90,90));
snake.add(new Point(90,60));
snake.add(new Point(90,30));
wp.setLayout(null);
wp.setBounds(0, 0, 500, 450);
btns[0].setMargin(new Insets(0,0,0,0));
btns[0].setBounds(350, 350, 50, 30);
wp.add(btns[0]);
sp.setLayout(null);
sp.setBounds(0, 0, 500, 450);
btns[1].setMargin(new Insets(0,0,0,0));
btns[1].setBounds(300, 350, 50, 30);
btns[2].setMargin(new Insets(0,0,0,0));
btns[2].setBounds(350, 350, 50, 30);
sp.add(btns[1]);
sp.add(btns[2]);
btns[0].addActionListener(this);
btns[1].addActionListener(this);
btns[2].addActionListener(this);
gamePane.addMouseListener(this);
jf.addKeyListener(this);
mainPane.setLayout(gld);
mainPane.add(wp,”1″);
mainPane.add(sp, “2”);
mainPane.add(gamePane, “3”);
bd=new BallDemo(500,450,gamePane);
mainPane.setSize(500,450);
mainPane.setVisible(true);
}
public SnakeGame(){
innerSnake =this. new InterClassSnake();
jf.add(mainPane);
jf.setSize(500, 450);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setVisible(true);
}
/**
* @param args
*/
public static void main(String[] args) {
SnakeGame sg=new SnakeGame();
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource()==btns[0]){
gld.show(mainPane, “2”);
}
if(e.getSource()==btns[1]){
gld.show(mainPane, “1”);
}
if(e.getSource()== btns[2]){
gld.show(mainPane, “3”);
initTime=System.currentTimeMillis();
tim = new Timer();
tim.scheduleAtFixedRate(new TimerCounts(initTime), 0,50000); //间隔大概10分钟提醒一次
innerSnake.setDaemon(true);
innerSnake.start();
}
}
class InterClassSnake extends Thread {
int tempDouX,tempDouY;
public void run(){
while(true){
this.displaySnake(gamePane.getGraphics());
this.displayDou(gamePane.getGraphics());
if(signal){moveSnake();signal=false;gamePane.repaint(); }
if(this.isEatDou()){
snake.add(0, new Point(douX,douY));System.out.println(“hello world 1”);
makeDou();
}
if(this.isEatSelf() || this.isOverBounds()){System.out.println(“hello world 2”);
JOptionPane.showMessageDialog(null, “你玩完了”);
System.exit(0);
}
}
}
/*造豆和造蛇、显示蛇、显示豆子函数*/
public void makeDou(){
douX=(int)((int)(Math.random()*10));
douY=(int)((int)(Math.random()*8));
if(douX>15)douX=douX-4;
if(douY>14)douY=douY-4;
douX=douX*30;douY=douY*30;
for(Point x:snake){
int tempX=x.x;
int tempY=x.y;
if(tempX==douX&&tempY==douY){
makeDou();
}
}
}
public void displaySnake(Graphics g){
for(Point pos:snake){
if(pos==snake.get(0)){
g.setColor(Color.green);
g.fillRect(pos.x, pos.y, 30, 30);
}
else
g.setColor(Color.red);
g.fillRect(pos.x, pos.y, 30, 30);
}
}
public void displayDou(Graphics g){
g.setColor(gamePane.getBackground());
g.drawRect(tempDouX, tempDouY, 30, 30);
g.setColor(Color.blue);
g.fillRect(douX, douY, 30, 30);
tempDouX=douX;tempDouY=douY;
}
//eat the bean ,return true if eat successfully,otherwise return false;
public boolean isEatDou(){
if(douX==snake.get(0).x && douY==snake.get(0).y){
return true;
}
return false;
}
public boolean isEatSelf(){
int x=snake.get(0).x , y =snake.get(0).y;
for(int i=snake.size()-1;i>1;i–){
if(x==snake.get(i).x && y==snake.get(i).y)
return true;
}
return false;
}
public boolean isOverBounds(){
int x=snake.get(0).x,y=snake.get(0).y;
if(x<0 || x>480 || y<0 ||y>450)
return true;
return false;
}
public void moveSnake(){
for(int i =snake.size()-1;i>0;i–){
snake.get(i).x=snake.get(i-1).x;
snake.get(i).y=snake.get(i-1).y;
}
int tx=snake.get(0).x , ty=snake.get(0).y;
switch(direct){
case 1: if(snake.get(1).y<snake.get(0).y){System.out.println(“不能往上”);}
else ty -=30;
break;
case 2: if(tx-snake.get(1).x==0){
tx=tx-30;
}
else{
ty=ty+30;
}
break;
case 3: if(tx-snake.get(1).x==0){
tx=tx+30;
}
else{
ty=ty-30;
}
break;
case 4: if(snake.get(1).y>snake.get(0).y){System.out.println(“不能往下”);}
else ty += 30;
case 5:
break;
}
snake.remove(snake.size()-1);
snake.add(0, new Point(tx,ty));
}
}
@Override
public void keyTyped(KeyEvent e) {
}
@Override
public void keyPressed(KeyEvent e) {
signal = true;
switch(e.getKeyCode()){
case KeyEvent.VK_UP: direct=1;
break;
case KeyEvent.VK_LEFT: direct =2;
break;
case KeyEvent.VK_RIGHT: direct =3;
break;
case KeyEvent.VK_DOWN: direct =4;
break;
default :direct=5;
}
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
class BallDemo { //小球运动，
private int x=50; //初始位置
private int y=50;
private final int XSIZE=30;
private final int YSIZE=30;
private int dx=2;
private int dy=2;
private int tempX=50;
private int tempY=50;
private final int retangleX;
private final int retangleY;
private JPanel pane; //用于得到背景面板
private Color c=new Color(5);
public BallDemo(int x,int y,JPanel jtp){
retangleX=x;
retangleY=y;
this.pane=jtp;
}
public void left(){
x -= dx;
}
public void right(){
x += dx;
}
public void up(){
y -= dy;
}
public void down(){
y += dy;
}
public void move(){
x += dx;
y += dy;
if(x<2){
dx = -dx;
}
if(x+XSIZE>retangleX){
dx = -dx;
}
if(y<YSIZE){
dy = -dy;
}
if(y+YSIZE>=retangleY){
dy = -dy;
}
}
protected void setColor(Color co){
this.c=co;
}
public void paint(Graphics g){
g.setColor(pane.getBackground()); //这条语句用于擦除小球轨迹,让这条语句不起作用你就知道了
g.fillOval(tempX, tempY, XSIZE, YSIZE);
g.setColor(c);
g.fillOval(x, y, XSIZE, YSIZE);
tempX=x;tempY=y;
}
}
}
//定时器类，工作任务类
class TimerCounts extends java.util.TimerTask{
private long init;
private JFrame jf=new JFrame(“游戏时间提示框”);
private JLabel label = new JLabel ();
public TimerCounts(long i){
this.init=i;
jf.setSize(200, 100);
jf.add(label);
jf.setVisible(true);
}
@Override
public void run(){
long j=System.currentTimeMillis();
byte tim =(byte)( (j-init)/6000); //minutes
if(tim>=20){
JOptionPane.showMessageDialog(null,”你已经玩了很久了，要退出游戏休息了”);
System.exit(0);
}
else{
label.setText(“游戏时间已经过了”+tim+”分钟”);
}
}
}
//欢迎界面
class WelcomPanel extends JPanel{
private static final long serialVersionUID = 1L;
Image img;
WelcomPanel(){
try{
img = ImageIO.read(new File(“e:\\ok1.jpg”));
}catch(IOException e){
System.out.println(“welcompanel”);
}
}
@Override
public void paintComponent(Graphics g){
super.paintComponent(g);
g.drawImage(img, getX(), getY(), null);
}
}
//开始界面
class StartPanel extends JPanel{
private static final long serialVersionUID = 1L;
Image img;
StartPanel(){
try{
img = ImageIO.read(new File(“e:\\ok2.jpg”));
}catch(IOException e){
System.out.println(“startpanel”);
}
}
@Override
public void paintComponent(Graphics g){
super.paintComponent(g);
g.drawImage(img, getX(), getY(), null);
}
}