java - 有人可以解释一下吗？ (运动无法正常工作)

Question

我在我的游戏中添加了一个东西，这样当你按空格键时，你会得到一个小的速度提升。然而，只有当您使用 WASD 键时它才能正常工作。如果按向上、向左或向下、向右箭头键，则增强将不起作用，但否则会起作用。谁能解释一下为什么这样做？

代码如下:

    boostTimer += Gdx.graphics.getDeltaTime();

    if(boostTimer > 3){
    snailBoost = 0;
    boostTimer = 0;
    }

    //movement
    if(Gdx.input.isKeyPressed(Keys.LEFT) || Gdx.input.isKeyPressed(Keys.A)){

        if(Gdx.input.isKeyPressed(Keys.SPACE) && snailBoost < 20){
            snailBoost++;
            snail.getBounds().x -= (snailSpeed + 100) * delta;
        }

        //flips the sprite
        snail.getSprite().setFlip(false, true);
        snail.getBounds().x -= snailSpeed * delta;

        //handles what happens when you go outside the game world
        if(snail.getBounds().x < -100)snail.getBounds().x = 1920;
    }

    if(Gdx.input.isKeyPressed(Keys.RIGHT) || Gdx.input.isKeyPressed(Keys.D)){

        if(Gdx.input.isKeyPressed(Keys.SPACE) && snailBoost < 20){
            snailBoost++;
            snail.getBounds().x += (snailSpeed + 100) * delta;
        }

        snail.getSprite().setFlip(true, true);
        snail.getBounds().x += snailSpeed * delta;

        if(snail.getBounds().x > 2020)snail.getBounds().x = -100;
    }

    if(Gdx.input.isKeyPressed(Keys.UP) || Gdx.input.isKeyPressed(Keys.W)){

        if(Gdx.input.isKeyPressed(Keys.SPACE) && snailBoost < 20){
            snailBoost++;
            snail.getBounds().y -= (snailSpeed + 100) * delta;
        }

        snail.getBounds().y -= snailSpeed * delta;

        if(snail.getBounds().y < -100)snail.getBounds().y = 1080;
    }

    if(Gdx.input.isKeyPressed(Keys.DOWN) || Gdx.input.isKeyPressed(Keys.S)){

        if(Gdx.input.isKeyPressed(Keys.SPACE) && snailBoost < 20){
            snailBoost++;
            snail.getBounds().y += (snailSpeed + 100) * delta;
        }

        snail.getBounds().y += snailSpeed * delta;

        if(snail.getBounds().y > 1080)snail.getBounds().y = -100;
    }

抱歉，代码困惑。 :P 对于游戏开发来说还是个新手。

Answer 1

廉价键盘共享按键的控制线，因此某些组合键无法正确注册，并且尝试同时按下 3-4 个以上的按键将导致任何结果。

要么购买更昂贵的键盘，要么选择可以使用的按键(例如您已经注意到的著名的 WASD)。与代码无关。