Question

[在此处输入图片描述] [1]我刚刚开始按照教程系列来学习如何创建Java 3D游戏引擎，但是当Youtuber运行以下代码时，他的程序运行流畅，并且不在乎任何东西。但是，当我运行完全相同的代码时，它首先具有2 FPS，然后崩溃并显示错误消息“ Java（TM）二进制SE没有响应...

教程系列： post

代码：


import java.util.ArrayList;
import org.lwjgl.input.Keyboard;

public class Input {

    public static final int NUM_KEYCODES = 256;

    private static ArrayList<Integer> currentKeys = new ArrayList<Integer>();
    private static ArrayList<Integer> downKeys = new ArrayList<Integer>();
    private static ArrayList<Integer> upKeys = new ArrayList<Integer>();

    //I call  this method in my main method and this is also what causes the lag
    // I think it has to do with the indexing of the keys, but on his computer, it runs smoothly
    public static void update() {

        // these 3 blocks of code clear out the Arraylists above and check if a is pressed / pressed down / or released
        upKeys.clear();

        for(int i = 0; i < NUM_KEYCODES; i++)
            if(!getKey(i) && currentKeys.contains(i))
                upKeys.add(i);

        downKeys.clear();

        for(int i = 0; i < NUM_KEYCODES; i++)
            if(getKey(i) && !currentKeys.contains(i))
                downKeys.add(i);

        currentKeys.clear();

        for(int i = 0; i < NUM_KEYCODES; i++)
            if(getKey(i))
                currentKeys.add(i);
    }

    public static boolean getKey(int keyCode) {
        return Keyboard.isKeyDown(keyCode);
    }

    public static boolean getKeyDown(int keyCode) {
        if(downKeys.contains(keyCode))
            return true;
        else
            return false;
    }

    public static boolean getKeyUp(int keyCode) {
        if(upKeys.contains(keyCode))
            return true;
        else
            return false;
    }
}```


  [1]: https://i.stack.imgur.com/P7POD.jpg

Eclipse程序崩溃/ Java TM没有响应

0 个答案: