今天用了一个多小时的时间，开发了一个简单的贪吃蛇游戏
成品展示图 其实用到的知识点并不多，下面展示一些自己设计
- 页面布局
- 自己画的几个图片
- 开始创建一个新的项目，并且按下面来写
创建StartGame包，并创建Start.java
目的的创建JFrame窗体
package StartGame;
public class Start {
public static void main(String[] args) {
JFrame jframe = new JFrame();
jframe.setTitle("简单贪吃蛇游戏");
jframe.setBounds(300, 50, 650, 470);
jframe.setResizable(false);
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jframe.add(new GamePanel());
jframe.setVisible(true);
}
}创建Resources包，创建ReadyImages.java
目的是用来存放一些静态的图片信息
package Resources;
public class ReadyImages { //准备好图片
public static URL headleft = ReadyImages.class.getResource("/Resources/snakeheadleft.gif");
public static URL headright = ReadyImages.class.getResource("/Resources/snakeheadright.gif");
public static URL headup = ReadyImages.class.getResource("/Resources/snakeheadup.gif");
public static URL headdown = ReadyImages.class.getResource("/Resources/snakeheaddown.gif");
public static URL body = ReadyImages.class.getResource("/Resources/snakebody.gif");
public static URL food = ReadyImages.class.getResource("/Resources/snakefood.gif");
public static ImageIcon headleftIcon = new ImageIcon(headleft);
public static ImageIcon headrightIcon = new ImageIcon(headright);
public static ImageIcon headupIcon = new ImageIcon(headup);
public static ImageIcon headdownIcon = new ImageIcon(headdown);
public static ImageIcon bodyIcon = new ImageIcon(body);
public static ImageIcon foodIcon = new ImageIcon(food);
}创建Snake包，并创建Snake.java
这个是蛇的实体类
package Snake;
public class Snake implements Runnable { // 创建一个蛇类
public int snakeLength; // 蛇的长度
public int[] snakeX = new int[600]; // 蛇的x坐标
public int[] snakeY = new int[500]; // 蛇的y坐标
public String action = "R"; //蛇的动作，默认是向右
public ImageIcon headimages = ReadyImages.headrightIcon;//头部的图片
public Snake() { // 初始化蛇的位置
// 每一个格子都有（25高25宽）
snakeLength = 3;
snakeX[0] = 100;snakeY[0] = 100;
snakeX[1] = 75;snakeY[1] = 100;
snakeX[2] = 50;snakeY[2] = 100;
}
// 重写run方法，
@Override
public void run() {
for (int i = snakeLength - 1; i > 0; i--) { // 除了头部其他的都向右移
snakeX[i] = snakeX[i - 1];
snakeY[i] = snakeY[i - 1];
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
/** 吃的动作 */
public boolean eatfood(int foodx, int foody) {
// 吃到食物
if (foodx == snakeX[0] && foody == snakeY[0]) {
snakeLength++; // 身体加1
return true;
}
return false;
}
/**吃到自己*/
public boolean eatmyself() {
for (int i = 1; i < snakeLength; i++) {
if (snakeX[0] == snakeX[i] && snakeY[0] == snakeY[i]) {
return true;
}
}
return false;
}
/**蛇的边界问题*/
public void border() {
if (action == "L") { // 判断蛇的动作
snakeX[0] = snakeX[0] - 25;
if (snakeX[0] < 25) {
snakeX[0] = 600;
}
headimages = ReadyImages.headleftIcon;
} else if (action == "R") {
snakeX[0] = snakeX[0] + 25;
if (snakeX[0] > 600) {
snakeX[0] = 25;
}
headimages = ReadyImages.headrightIcon;
} else if (action == "U") {
snakeY[0] = snakeY[0] - 25;
if (snakeY[0] < 75) {
snakeY[0] = 400;
}
headimages = ReadyImages.headupIcon;
} else if (action == "D") {
snakeY[0] = snakeY[0] + 25;
if (snakeY[0] > 400) {
snakeY[0] = 75;
}
headimages = ReadyImages.headdownIcon;
}
}
}创建GamePanel包，并创建GamePanel.java
这个是游戏的主面板，
package GamePanel;
public class GamePanel extends JPanel{
Snake snake; //蛇的类别
GameKeyListener keyListener; //键盘操作
int grade = 0; //积分
boolean start = false; //是否开始游戏。默认不是
boolean dead = false; //蛇是否死亡
int foodX; //设置蛇出现的位置
int foodY;
Random random = new Random();
public GamePanel(){ //初始化游戏界面
initGame(); //初始化
}
/**初始化游戏*/
public void initGame() {
//把线程开起来
snake = new Snake();
keyListener = new GameKeyListener(snake.action,start);
foodX = 25 + 25 * random.nextInt(24); //随机生成食物
foodY = 75 + 25 * random.nextInt(14);
this.setFocusable(true); // 焦点可以在游戏上
this.addKeyListener(keyListener); //添加键盘事件
}
//游戏画板
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
//画一个游戏的面板
g.setColor(Color.WHITE);
g.fillRect(25, 75, 600, 350);
//积分显示块
g.setColor(Color.BLACK);
g.setFont(new Font("微软雅黑", Font.BOLD, 18));
g.drawString("积分" + grade, 500, 50);
//画静态蛇
snake.headimages.paintIcon(this, g, snake.snakeX[0], snake.snakeY[0]);
for(int i = 1; i < snake.snakeLength; i++) { //i需要从1开始，因为头部已经设置了
ReadyImages.bodyIcon.paintIcon(this, g, snake.snakeX[i], snake.snakeY[i]);
}
//画食物
ReadyImages.foodIcon.paintIcon(this, g, foodX, foodY);
//游戏的判断
snake.action = keyListener.snakeAction();
start = keyListener.isStart();
dead = snake.eatmyself(); //吃到自己
//开始游戏
if(start == true && dead == false) {
snake.run(); //让蛇的线程跑起来
snake.border(); //蛇的边界问题
boolean eatting = snake.eatfood(foodX, foodY);//吃到食物
if(eatting) { //吃到食物
foodX = 25 + 25 * random.nextInt(24); //随机生成食物
foodY = 75 + 25 * random.nextInt(14);
grade++;
}
}
//暂停游戏
if (start == false && dead == false) {
g.setColor(Color.BLACK);
g.setFont(new Font("微软雅黑", Font.BOLD, 30));
g.drawString("按下空格键开始游戏", 180, 250);
}
// 是否吃到自己游戏结束
if (dead) {
g.setColor(Color.BLACK);
g.setFont(new Font("微软雅黑", Font.BOLD, 30));
g.drawString("游戏结束,按下空格键开始", 180, 250);
grade = 0;
}
//死亡后
if(start == false && dead == true) {
start = true;
dead = false;
initGame(); //重新游戏
}
//页面刷新（帧）
repaint();
}
}创建Controller包，并创建GameKeyListener.java
这个是用来对键盘的一些监听操作
package Controller;
public class GameKeyListener implements KeyListener{
public String action;
public boolean isstart;
public GameKeyListener(String action, boolean isstart) {
super();
this.action = action;
this.isstart = isstart;
}
/**拿到蛇的操作*/
public String snakeAction() {
return action;
}
/**是否开始游戏*/
public boolean isStart() {
return isstart;
}
@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if (keyCode == KeyEvent.VK_SPACE) { // 按下空格键
isstart = !isstart; //控制暂停
} else if (keyCode == KeyEvent.VK_LEFT) {
action = "L";
} else if (keyCode == KeyEvent.VK_RIGHT) {
action = "R";
} else if (keyCode == KeyEvent.VK_UP) {
action = "U";
} else if (keyCode == KeyEvent.VK_DOWN) {
action = "D";
}
}
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyReleased(KeyEvent e) {
}
}完成上面的编写，就可以运行了。
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