根據B站狂神說java視訊 一點一點寫的貪吃蛇小遊戲(自己又補充了一些功能)不能撞牆-不能掉頭
直接上原始碼
StartGame.java
package codeyuaiiao;
import javax.swing.*;
/**
* 遊戲開始
* by:codeyuaiiao
*/
public class StartGame {
public static void main(String[] args) {
//1.繪製一個靜態視窗
JFrame jf = new JFrame("codeyuaiiao-java貪吃蛇小遊戲");
jf.setBounds(10,10,900,720);//給視窗制定位置和長寬大小
jf.setResizable(false);//自動更改視窗大小
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//是否可以手動關閉視窗
//2.繪製一個面板 新增元件到JFrame
jf.add(new GamePanel());
//3.顯示視窗
jf.setVisible(true);
}
}
GamePanel.java
package codeyuaiiao;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;
/**
* 遊戲畫板
* by:codeyuaiiao
*/
public class GamePanel extends JPanel implements KeyListener, ActionListener {
int length;//蛇的長度
int[] snakeX = new int[600];//蛇的座標X
int[] snakeY = new int[500];//蛇的座標Y
String fx; //"R":right;"D":down;"U":up;"L":Left;
boolean isStart = false;//遊戲開始
Timer timer = new Timer(100,this);//定時器
//食物座標
int foodX;
int foodY;
Random random = new Random();//生成亂數
//死亡判斷
boolean isfail = false;
//積分
int score;
//構造器
public GamePanel(){
init();
//獲取鍵盤的監聽事件
this.setFocusable(true);//設定焦點
this.addKeyListener(this);//新增事件監聽事件
timer.start();//定時器開始
}
//初始化
public void init(){
length = 3;
snakeX[0] = 100;snakeY[0] = 100;//頭
snakeX[1] = 75; snakeY[1] = 100;//第一個身體
snakeX[2] = 50;snakeY[2] = 100;//第二個身體
fx = "R";
foodX = 25 + 25*random.nextInt(34);
foodY = 75 + 25*random.nextInt(24);
score = 0;
}
//畫面板 Ctrl+O 重寫
//Graphics g: 畫筆
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);//清屏
this.setBackground(Color.white);//設定背景顏色
Date.header.paintIcon(this,g,25,11); //繪製頭部廣告欄
g.fillRect(25,75,850,600);//繪製遊戲區域
//畫一條靜態的小蛇
if(fx.equals("R")){
Date.right.paintIcon(this,g,snakeX[0],snakeY[0]);
}
if(fx.equals("D")){
Date.down.paintIcon(this,g,snakeX[0],snakeY[0]);
}
if(fx.equals("U")){
Date.up.paintIcon(this,g,snakeX[0],snakeY[0]);
}
if(fx.equals("L")){
Date.left.paintIcon(this,g,snakeX[0],snakeY[0]);
}
//通過控制length的長度來控制小蛇的長度
for (int i = 1; i < length; i++) {
Date.body.paintIcon(this,g,snakeX[i],snakeY[i]);
}
//畫積分
g.setColor(Color.white);
g.setFont(new Font("楷體",Font.BOLD,16));
g.drawString("長度"+length,750,35);
g.drawString("分數"+score,750,55);
//畫食物
Date.food.paintIcon(this,g,foodX,foodY);
if(snakeX[0]==foodX && snakeY[0]==foodY){
//小蛇長度+1
length++;
//積分+10
score += 10;
foodX = 25 + 25*random.nextInt(34);
foodY = 75 + 25*random.nextInt(24);
}
//畫開始文字
if(isStart == false){
g.setColor(Color.white);
g.setFont(new Font("楷體",Font.BOLD,40));//設定字型
g.drawString("按下空格開始遊戲",300,300);
}
//畫失敗文字
if(isfail){
g.setColor(Color.RED);
g.setFont(new Font("楷體",Font.BOLD,40));//設定字型
g.drawString("遊戲失敗,按下空格開始遊戲",200,300);
}
}
//按鍵監聽
public void keyPressed(KeyEvent e) {
//獲取鍵盤按下的是哪個按鍵
int keyCode = e.getKeyCode();
//判斷按鍵與設定的按鍵是否一致
if(keyCode == KeyEvent.VK_SPACE){
if(isfail){//失敗,再來一遍
isfail = false;
init();
}else{//暫停遊戲
isStart = !isStart;
}
repaint();//重新整理介面
}
//監聽鍵盤按鍵,頭部變換方向(圖片)
//小蛇不能掉頭
if(keyCode == KeyEvent.VK_LEFT){
if(fx.equals("R")){
fx = "R";
}else{
fx = "L";
}
} else if (keyCode == KeyEvent.VK_RIGHT){
if(fx.equals("L")){
fx = "L";
}else{
fx = "R";
}
}if(keyCode == KeyEvent.VK_UP){
if(fx.equals("D")){
fx = "D";
}else{
fx = "U";
}
} else if (keyCode == KeyEvent.VK_DOWN){
if(fx.equals("U")){
fx = "U";
}else{
fx = "D";
}
}
}
//定時器 監聽事件.幀:執行定時操作
public void actionPerformed(ActionEvent e) {
if (isStart && isfail == false) {//如果遊戲開始,且遊戲沒有失敗
//右移
for (int i = length - 1; i > 0; i--) {
snakeX[i] = snakeX[i - 1];
snakeY[i] = snakeY[i - 1];
}
if (fx.equals("R")) {
snakeX[0] = snakeX[0] + 25;
//小蛇碰牆迴圈
// if (snakeX[0] > 850) {
// snakeX[0] = 25;
// }
} else if (fx.equals("L")) {
snakeX[0] = snakeX[0] - 25;
//小蛇碰牆迴圈
// if (snakeX[0] < 25) {
// snakeX[0] = 850;
// }
} else if (fx.equals("U")) {
snakeY[0] = snakeY[0] - 25;
//小蛇碰牆迴圈
// if (snakeY[0] < 75) {
// snakeY[0] = 650;
// }
} else if (fx.equals("D")) {
snakeY[0] = snakeY[0] + 25;
//小蛇碰牆迴圈
// if (snakeY[0] > 650) {
// snakeY[0] = 75;
// }
}
//碰撞檢測---小蛇頭和身體
for (int i = 1; i < length; i++) {
if (snakeX[0] == snakeX[i] && snakeY[0] == snakeY[i]) {
isfail = true;
}
}
//碰撞檢測--小蛇頭和牆壁
if ((snakeX[0]<25 || snakeX[0]>850)||(snakeY[0]<75 || snakeY[0]>650 ) ){
isfail = true;
}
repaint();//重新整理介面
}
timer.start();
}
public void keyReleased(KeyEvent e) {}
public void keyTyped(KeyEvent e) {}
}
Date.java
package codeyuaiiao;
import javax.swing.*;
import java.net.URL;
/**
* 存放外部資料
* by:codeyuaiiao
*/
public class Date {
//頭部
public static URL headerURL = Date.class.getResource("/main/java/statics/header.png");
public static ImageIcon header = new ImageIcon(headerURL);
//貪吃蛇 頭部上下左右
public static URL upURL = Date.class.getResource("/main/java/statics/up.png");
public static URL downURL = Date.class.getResource("/main/java/statics/down.png");
public static URL leftURL = Date.class.getResource("/main/java/statics/left.png");
public static URL rightURL = Date.class.getResource("/main/java/statics/right.png");
public static ImageIcon up = new ImageIcon(upURL);//上
public static ImageIcon down = new ImageIcon(downURL);//下
public static ImageIcon left = new ImageIcon(leftURL);//左
public static ImageIcon right = new ImageIcon(rightURL);//右
//身體
public static URL bodyURL = Date.class.getResource("/main/java/statics/body.png");
public static ImageIcon body = new ImageIcon(bodyURL);
//食物
public static URL foodURL = Date.class.getResource("/main/java/statics/food.png");
public static ImageIcon food = new ImageIcon(foodURL);
}
pom.xml
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>codeyuaiiao.StartGame</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
一共三個類
還有一個pom檔案 裡面的這些程式碼 用於maven打包 如果沒有pom中這些程式碼 匯出來的jar包會出現錯誤"找不到主類"
可以看我另一篇部落格
maven匯出jar包出現"找不到主類"錯誤
最後是程式執行的成果