我完全不懂java图形。
我写了一个简单的“游戏”,你用箭头键控制一个盒子
以下是源代码:
package com.thundercrust.graphics;
public class Drawings extends Canvas implements KeyListener, Runnable {
public static Thread thread;
public static Drawings draw;
private static final long serialVersionUID = 1L;
public static boolean running = false;
public static int x = 640;
public static int y = 320;
public static int bulletX = 0;
public static int bulletY = 0;
public static int direction = 2;
public static boolean fired = false;
public static boolean show = false;
public static String colorCode;
public static final int WIDTH = 1366;
public static final int HEIGHT = WIDTH / 16 * 9;
public static final String title = "A Moving Box!";
JFrame frame = new JFrame();
public void paint(Graphics g) {
Graphics2D g2D = (Graphics2D) g;
g2D.setColor(Color.black);
g2D.fillRect(0, 0, 1366, 768);
g2D.setColor(Color.pink);
g2D.fillRect(50, 50, 1266, 668);
if (colorCode.equals("red")) g2D.setColor(Color.red);
if (colorCode.equals("orange")) g2D.setColor(Color.orange);
if (colorCode.equals("yellow")) g2D.setColor(Color.yellow);
if (colorCode.equals("green")) g2D.setColor(Color.green);
if (colorCode.equals("blue")) g2D.setColor(Color.blue);
if (colorCode.equals("cyan")) g2D.setColor(Color.cyan);
if (colorCode.equals("gray")) g2D.setColor(Color.gray);
g2D.fillRect(x, y, 50, 50);
}
public Drawings() {
frame.addKeyListener(this);
frame.setTitle(title);
frame.setSize(WIDTH, HEIGHT);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
frame.setVisible(true);
frame.add(this);
}
public void display() {
while (running = true) {
repaint();
try {
Thread.sleep(30);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public static void main(String args[]) {
colorCode = JOptionPane.showInputDialog("Enter the color of the box: ");
running = true;
draw = new Drawings();
draw.start();
}
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if (keyCode == KeyEvent.VK_UP) { y-= 5; direction = 0; }
if (keyCode == KeyEvent.VK_DOWN) { y+= 5; direction = 2; }
if (keyCode == KeyEvent.VK_LEFT) {x-= 5; direction = 3;}
if (keyCode == KeyEvent.VK_RIGHT) {x+= 5; direction = 1;}
if (keyCode == KeyEvent.VK_Z) System.out.println("You pressed z");
}
public void keyReleased(KeyEvent e) {
}
public void keyTyped(KeyEvent e) {
}
public synchronized void start() {
running = true;
thread = new Thread(this, "Display");
thread.start();
}
public synchronized void stop() {
running = false;
try {
thread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void run() {
while (running = true) {
System.out.println("The Game is Running!");
repaint();
try {
Thread.sleep(60);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
我之所以请求帮助,是因为应用程序总是闪烁,它变得非常烦人。
有什么办法解决这个问题吗?
任何帮助都将不胜感激。
1条答案
按热度按时间lfapxunr1#
canvas不是双缓冲的,我建议不要这样使用它。相反,可以考虑使用
JPanel
覆盖它的是paintComponent
方法,这将免费为您提供双重缓冲。请参见awt和swing中的绘画和一些细节的定制绘画
或者,你可以使用
BufferStrategy
,这将允许您定义自己的双缓冲策略并完全控制绘制过程,允许您控制何时绘制画布(又称活动绘制)