Question

如果我将我的player1和player2向上移动，让我说我按下player1的向下键，我的播放器就会停止向上移动。我找不到问题。有人可以帮助我并解释我做错了吗？

package game;

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class KeyInput extends KeyAdapter{

    private Handler handler;
    private boolean [] keyPressed = new boolean [4];

    public KeyInput(Handler handler){
        this.handler = handler;
    }
    public void keyPressed(KeyEvent e){
        int key = e.getKeyCode();

        keyPressed[0]= false;
        keyPressed[1]= false;
        keyPressed[2]= false;
        keyPressed[3]= false;

        for(int i = 0; i <handler.object.size(); i++){
            GameObject tempobject= handler.object.get(i);
            if (tempobject.getId()== ID.Player1){
                if (key == KeyEvent.VK_UP){tempobject.setSpeedy(-7); keyPressed[0] = true;}
                if (key == KeyEvent.VK_DOWN){tempobject.setSpeedy(7); keyPressed[1] = true;}
            }
            if(tempobject.getId()== ID.player2)
                if (key == KeyEvent.VK_W){tempobject.setSpeedy2(-7); keyPressed[2] = true;}
                if (key == KeyEvent.VK_S){tempobject.setSpeedy2(7); keyPressed[3] = true;}
        }
        if(key == KeyEvent.VK_ESCAPE)System.exit(1);
    }
    public void keyReleased(KeyEvent e){
        int key = e.getKeyCode();
        for(int i = 0; i <handler.object.size(); i++){
            GameObject tempobject= handler.object.get(i);
            if (tempobject.getId()== ID.Player1){
                if (key == KeyEvent.VK_UP) keyPressed[0] = false;
                if (key == KeyEvent.VK_DOWN) keyPressed[1] = false;

                if(!keyPressed[0] && !keyPressed[1])tempobject.setSpeedy(0);

            }
            if (tempobject.getId()== ID.player2){
                if (key == KeyEvent.VK_W) keyPressed[2] = false;
                if (key == KeyEvent.VK_S) keyPressed[3] = false;

                if(!keyPressed[2] && !keyPressed[3])tempobject.setSpeedy2(0);
            }
        }
    }
}

Answer 1

这可能与此有关：

keyPressed[0]= false;
keyPressed[1]= false;
keyPressed[2]= false;
keyPressed[3]= false;

这样可以使得无论何时按下任何键，其他键都设置为false，即使它们仍然被按下。

如果player2移动另一个方向，则player1停止移动

1 个答案: