基于JAVA的贪吃蛇小游戏
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贪吃蛇小游戏
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import java.io.IOException;
import java.util.Random;
import javax.sound.sampled.*;
import javax.swing.*;
class Tile{
int x;
int y;
public Tile(int x0,int y0){
x = x0;
y = y0;
}
}
class SnakeDemo extends JComponent{
/**
*
*/
private static final long serialVersionUID = 3794762291171148906L;
private final int MAX_SIZE = 400;//蛇身体最长为400节
private Tile temp = new Tile(0,0);
private Tile temp2 = new Tile(0,0);
private Tile head = new Tile(227,100);//头部的位置初始化为(227,100)
private Tile[] body = new Tile[MAX_SIZE];
private String direction = "R";//默认向右走
private String current_direction = "R";//当前方向
private boolean first_launch = false;
private boolean iseaten = false;
private boolean isrun = true;
private int randomx,randomy;
private int body_length = 5;//身体长度初始化为5
private Thread run;
private JLabel label = new JLabel("当前长度：");
private JLabel label2 = new JLabel("所花时间：");
private JLabel label3 = new JLabel("说 明：");
private JTextArea explain = new JTextArea("此游戏是一个贪吃蛇Demo版本，实现简单地移动，得分，判断撞墙和撞自己的功能，"
+ "初始长度为6，头部为红色，身体的颜色渐变。游戏本身代码只有300行，加上一些显示，计时和音效后多了几百行。\\n"
+ "游戏界面按上下左右键实现移动，按ESC重新开始，按空格键可以实现暂停和开始");
private JLabel Score = new JLabel("6");
private JLabel Time = new JLabel("");
private Font f = new Font("微软雅黑",Font.PLAIN,15);
private Font f2 = new Font("微软雅黑",Font.PLAIN,13);
private JPanel p = new JPanel();
private int hour =0;
private int min =0;
private int sec =0 ;
private boolean pause = false;
public SnakeDemo(){
String lookAndFeel =UIManager.getSystemLookAndFeelClassName();
try {
UIManager.setLookAndFeel(lookAndFeel);
} catch (ClassNotFoundException e1) {
// TODO 自动生成的 catch 块
e1.printStackTrace();
} catch (InstantiationException e1) {
// TODO 自动生成的 catch 块
e1.printStackTrace();
} catch (IllegalAccessException e1) {
// TODO 自动生成的 catch 块
e1.printStackTrace();
} catch (UnsupportedLookAndFeelException e1) {
// TODO 自动生成的 catch 块
e1.printStackTrace();
}
//布局
add(label);
label.setBounds(500, 10, 80, 20);
label.setFont(f);
add(Score);
Score.setBounds(500, 35, 80, 20);
Score.setFont(f);
add(label2);
label2.setBounds(500, 60, 80, 20);
label2.setFont(f);
add(Time);
Time.setBounds(500, 85, 80, 20);
Time.setFont(f);
add(p);
p.setBounds(498, 110, 93, 1);
p.setBorder(BorderFactory.createLineBorder(Color.black));
add(label3);
label3.setBounds(500, 115, 80, 20);
label3.setFont(f);
add(explain);
explain.setBounds(498, 138, 100, 350);
explain.setFont(f2);
explain.setLineWrap(true);
explain.setOpaque(false);
for(int i = 0; i < MAX_SIZE;i++)
{
body[i] = new Tile(0,0);
}
addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
super.keyPressed(e);
if(e.getKeyCode() == KeyEvent.VK_RIGHT)
{
if(isrun && current_direction != "L")
{
direction = "R";
}
}
if(e.getKeyCode() == KeyEvent.VK_LEFT)
{
if(isrun && current_direction != "R")
{
direction = "L";
}
}
if(e.getKeyCode() == KeyEvent.VK_UP)
{
if(isrun && current_direction != "D")
{
direction = "U";
}
}
if(e.getKeyCode() == KeyEvent.VK_DOWN)
{
if(isrun && current_direction != "U")
{
direction = "D";
}
}
if(e.getKeyCode() == KeyEvent.VK_ESCAPE)
{
direction = "R";//默认向右走
current_direction = "R";//当前方向
first_launch = false;
iseaten = false;
isrun = true;
body_length = 5;
head = new Tile(227,100);
Score.setText("6");
hour =0;
min =0;
sec =0 ;
for(int i = 0; i < MAX_SIZE;i++)
{
body[i].x = 0;
body[i].y = 0;
}
run = new Thread();
run.start();
System.out.println("Start again");
}
if(e.getKeyCode() == KeyEvent.VK_SPACE)//按空格键开始和暂停暂时没做，还在思考中
{
if(!pause)//暂停
{
pause = true;
isrun = false;
}
else//开始
{
pause = false;
isrun = true;
}
}
}
});
new Timer();
setFocusable(true);
}
public void paintComponent(Graphics g1){
super.paintComponent(g1);
Graphics2D g = (Graphics2D) g1;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
g.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,RenderingHints.VALUE_STROKE_NORMALIZE);
//画头部
g.setColor(Color.red);
g.fillRoundRect(head.x, head.y, 20, 20, 10, 10);
g.setPaint(new GradientPaint(115,135,Color.CYAN,230,135,Color.MAGENTA,true));
if(!first_launch)
{
//初始化身体
int x = head.x;
for(int i = 0;i < body_length;i++)
{
x -= 22;//相邻两个方块的间距为2个像素，方块宽度都为20像素
body[i].x = x;
body[i].y = head.y;
g.fillRoundRect(body[i].x, body[i].y, 20, 20, 10, 10);
}
//初始化食物位置
ProduceRandom();
g.fillOval(randomx, randomy, 19, 19);
}
else
{
//每次刷新身体
for(int i = 0;i < body_length;i++)
{
g.fillRoundRect(body[i].x, body[i].y, 20, 20, 10, 10);
}
if(EatFood())//被吃了重新产生食物
{
ProduceRandom();
g.fillOval(randomx, randomy, 19, 19);
iseaten = false;
}
else
{
g.fillOval(randomx, randomy, 19, 19);
}
}
first_launch = true;
//墙
g.setStroke( new BasicStroke(4,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL));
g.setBackground(Color.black);
g.drawRect(2, 7, 491, 469);
//网格线
for(int i = 1;i < 22;i++)
{
g.setStroke( new BasicStroke(1,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL));
g.setColor(Color.black);
g.drawLine(5+i*22,9,5+i*22,472);
if(i <= 20)
{
g.drawLine(4,10+i*22,491,10+i*22);
}
}
}
public void ProduceRandom(){
boolean flag = true;
Random rand = new Random();
randomx = (rand.nextInt(21) + 1) * 22 + 7;
randomy = (rand.nextInt(20) + 1) *22 + 12;
while(flag)
{
for(int i = 0;i < body_length; i++)
{
if(body[i].x == randomx && body[i].y == randomy)
{
randomx = (rand.nextInt(21) + 1) * 22 + 7;
randomy = (rand.nextInt(20) + 1) *22 + 12;
flag = true;
break;
}
else
{
if(i == body_length - 1)
{
flag = false;
}
}
}
}
}
public void HitWall(){//判断是否撞墙
if(current_direction == "L")
{
if(head.x < 7)
{
new AePlayWave("over.wav").start();
isrun = false;
int result=JOptionPane.showConfirmDialog(null, "Game over! Try again?", "Information", JOptionPane.YES_NO_OPTION);
if(result==JOptionPane.YES_NO_OPTION)
{
direction = "R";//默认向右走
current_direction = "R";//当前方向
first_launch = false;
iseaten = false;
isrun = true;
body_length = 5;
head = new Tile(227,100);
Score.setText("6");
hour =0;
min =0;
sec =0 ;
for(int i = 0; i < MAX_SIZE;i++)
{
body[i].x = 0;
body[i].y = 0;
}
run = new Thread();
run.start();
System.out.println("Start again");
}
else
{
run.stop();
}
}
}
if(current_direction == "R")
{
if(head.x > 489)
{
new AePlayWave("over.wav").start();
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