Question

我对java很新。

我试图通过观看在线教程来使用java语言制作游戏。在我的代码中，我有一个游戏循环，它调用render方法来显示我想要显示的游戏对象。但是出于某种原因，我的代码似乎不像在线教程描述的那样工作。

以下是我迄今为游戏开发编写的代码。

游戏类

import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferStrategy;

public class Game extends Canvas implements Runnable{
    private static final long serialVersionUID = 1902147405213257243L;

    public static final int WIDTH = 640, HEIGHT = WIDTH/12*9;
    private Thread thread;
    private boolean running = false;

    public Game() {
        new Window(WIDTH, HEIGHT, "Practice Game", this);
    }

    public synchronized void start() {
        thread = new Thread(this);
        thread.start();
        running = true;
    }

    public synchronized void stop() {
        try {
            thread.join();
            running = false;
        } catch(Exception e) {
            e.printStackTrace();
        }
    }

    public void run() {
        long lastTime = System.nanoTime();
        double amountOfTicks = 60.0;
        double ns = 1000000000 / amountOfTicks;
        double delta = 0;
        long timer = System.currentTimeMillis();
        int frames = 0 ;
        while (running) {
            long now = System.nanoTime();
            delta += (now - lastTime) / ns;
            lastTime = now;
            while (delta >= 1) {
                tick();
                delta--;
            }
            if(running)
                render();
            frames++;

            if(System.currentTimeMillis() - timer > 1000) {
                timer += 1000;
                System.out.println("FPS: " + frames);
                frames = 0;
            }
        }
        stop();
    }

    private void tick() {

    }

    private void render() {
        BufferStrategy bs = this.getBufferStrategy();
        if(bs == null) {
            this.createBufferStrategy(3);
            return;
        }

        Graphics g = bs.getDrawGraphics();
        g.setColor(Color.black);
        g.fillRect(0, 0, WIDTH, HEIGHT);

        g.dispose();
        bs.show();
    }

    public static void main(String[] args) {
        new Game();
    }
}

窗口类

import java.awt.Canvas;
import java.awt.Dimension;

import javax.swing.JFrame;

public class Window extends Canvas {
    public Window (int width, int height, String title, Game game) {
        JFrame frame = new JFrame(title);

        frame.setPreferredSize(new Dimension(width, height));
        frame.setMaximumSize(new Dimension(width, height));
        frame.setMinimumSize(new Dimension(width, height));

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
        frame.setLocationRelativeTo(null);
        frame.add(game);
        game.start();
    }
}

此代码的问题是框架的背景颜色仍然是默认颜色，而不是呈现黑色背景。

我还注意到，使用三重缓冲运行游戏导致打印FPS大约800,000，而使用双缓冲导致2,000个奇怪的原因。

我正在使用eclipse和java版本8.我正在使用mac。

无法使用BufferStrategy进行渲染

0 个答案: