如何设置刷新率的JFrame？ [英] How do I set up a JFrame with a refresh rate?

问题描述

我有一个2D游戏，整个结构完全编码，除了图形。我只是更新JFrame的单个组件，它是一个包含50个图像的Graphic。每一帧图像都在不同的位置，因此需要刷新率。

I have a 2d game which the entire structure is completely coded except the graphics. I am just updating the single component of a JFrame which is a Graphic containing 50 images. Each frame the images are in a different location hence the need for a refresh rate.

要绘制，我已经覆盖了paintComponent（）方法，所以我真的需要do是每40ms重新绘制一个组件（再次，只是一个Graphic）。

To paint, I have overridden the paintComponent() method, so all I really need to do is repaint the component (which, again, is just a Graphic) every 40ms.

如何设置一个25FPS的JFrame？

How do you set up a JFrame with 25FPS?

推荐答案

此 AnimationTest 使用 javax.swing.Timer中 。 40 ms的周期将给出25 Hz的速率。

This AnimationTest uses javax.swing.Timer. A period of 40 ms would give a rate of 25 Hz.

private final Timer timer = new Timer(40, this);

附录：计时器的 ActionListener 通过调用来响应 repaint（），随后调用被覆盖的 paintComponent（）方法

Addendum: The timer's ActionListener responds by invoking repaint(), which subsequently calls your overridden paintComponent() method

@Override
public void actionPerformed(ActionEvent e) {
    this.repaint();
}

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