我需要将其实现到我的程序中的确切代码。我只想玩游戏一分钟，然后在一分钟后打印到游戏结束。如果有人能准确地告诉我它在我的程序中应该放在哪里，我也将不胜感激。请有人帮我解决这个问题。我的时间真的很紧迫。谢谢
这是我的代码:
import java.awt.Canvas;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.swing.JFrame;
public class Game extends Canvas implements Runnable {
/**
*
*/
private static final long serialVersionUID = 1L;
public static final int WIDTH = 320;
public static final int HEIGHT = WIDTH / 12 * 9;
public static final int SCALE =2;
public final String TITLE ="2D SPACE GAME";
public final String NAME ="Sound";
private boolean running = false;
private Thread thread;
private BufferedImage image =
new BufferedImage(WIDTH,HEIGHT,BufferedImage.TYPE_INT_RGB);
private BufferedImage spriteSheet= null;
private BufferedImage background = null;
private boolean is_shooting = false;
private Player p;
private Controller c;
private Textures tex;
public void init(){
//which will let the ship move better
requestFocus();
Sound.sound2.play();
BufferedImageLoader loader= new BufferedImageLoader();
try{
spriteSheet = loader.loadImage("/sprite_sheet.png");
background = loader.loadImage("/background.png");
}catch(IOException e){
e.printStackTrace();
}
addKeyListener(new KeyInput(this));
tex = new Textures(this);
//we have to initlise the p under the try and catch or it will not work
//"this" is refering to game from the player class 200 are the coordinates
// tex will contain all the images
p = new Player(200,200,tex);
c = new Controller(this,tex);
}
//if running equals true we just return out of the method
private synchronized void start(){
if (running)
return;
running=true;
thread = new Thread(this);
thread.start();
}
private synchronized void stop(){
if (!running)
return;
//this will stop the game loop
running=false;
try {
thread.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.exit(1);
}
public void run(){
init();
long lastTime = System.nanoTime();
final double amountOfTicks = 60.0; //game updates 60 times
double ns = 1000000000 / amountOfTicks;
double delta =0;
int updates =0;
int frames =0;
long timer = System.currentTimeMillis();
//fps helps us update.
while(running){
//loop for the game the heart of the game.
long now = System.nanoTime();
delta += (now-lastTime ) / ns;
lastTime = now;
if (delta >=1){
tick();
updates++;
delta--;
}
render();
frames++;
//calcuating the fps, we want to do every second.
if(System.currentTimeMillis() - timer > 1000){
timer+=1000;
System.out.println(updates+ "Ticks fps "+ frames);
updates =0;
frames=0;
}
}
stop();
}
private void tick(){
p.tick();
c.tick();
}
private void render(){
//this. referes to the canvas class thats were we are getting this
BufferStrategy bs = this.getBufferStrategy();
//we want to intilaze once it from loading billions of times
//we want to introduce tripple buffering
if (bs==null)
{
createBufferStrategy(3);
return;
}
Graphics g = bs.getDrawGraphics();
///////////////////////////were we draw the image
g.drawImage(image,0,0, getWidth(), getHeight(), this);
g.drawImage(background,0,0, null);
p.render(g);
c.render(g);
/////////////////////////
//disposing the buffered image
g.dispose();
bs.show();
}
public void keyPressed(KeyEvent e){
int key = e.getKeyCode();
if(key==KeyEvent.VK_RIGHT){
p.setVelX(5);
}else if (key==KeyEvent.VK_LEFT){
p.setVelX(-5);
}else if (key==KeyEvent.VK_DOWN){
p.setVelY(5);
}else if (key==KeyEvent.VK_UP){
p.setVelY(-5);
}else if (key==KeyEvent.VK_SPACE && !is_shooting ){
is_shooting = true;
c.addBullet(new Bullet(p.getX(),p.getY(), tex ));
Sound.sound1.play();
}
}
public void keyReleased(KeyEvent e){
int key = e.getKeyCode();
if(key==KeyEvent.VK_RIGHT){
p.setVelX(0);
}else if (key==KeyEvent.VK_LEFT){
p.setVelX(0);
}else if (key==KeyEvent.VK_DOWN){
p.setVelY(0);
}else if (key==KeyEvent.VK_UP){
p.setVelY(0);
}else if (key ==KeyEvent.VK_SPACE){
is_shooting = false; // this is going to force the player to realise the key in order to be able to shoot another bullet
}
}
public static void main(String args[]){
Game game = new Game();
game.setPreferredSize(new Dimension(WIDTH * SCALE, HEIGHT * SCALE ));
game.setMaximumSize(new Dimension(WIDTH * SCALE, HEIGHT * SCALE ));
game.setMinimumSize(new Dimension(WIDTH * SCALE, HEIGHT * SCALE ));
JFrame frame = new JFrame(game.TITLE);
frame.add(game);
frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
game.start();
}
public BufferedImage getSpriteSheet(){
return spriteSheet;
}
}
最佳答案
使用 JPanel 代替 awt.Canvas
JPanel 不需要使用 BufferStrategy(用于此作业)
使用paintComponent代替render()
使用 Swing Timer 而不是从 util.Timer 调用的 Runnable#Thread
使用 KeyBinding 而不是 KeyListener
否则 AWT 或 Swing 容器必须可针对 KeyEvents (setFocusable()) 获得焦点
这里有一堆带有动画的线程，带有paintComponent，由Swing Timer调用/延迟，由KeyBindings监听
我不建议混合使用 AWT 组件和 Swing JComponent
将所需动画的元素添加到 PaintComponent 内的 util.List 中，以在此列表中循环(或移动到/显示所需元素)
关于java - 如何在 java 2d 射击游戏中将计时器设置为 1 分钟？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16129787/