用于游戏菜单的 Unity 协程

Question

我正在 Unity 网站的教程上构建一个类似滚球游戏的游戏，现在我专注于游戏结束菜单，当玩家失去所有生命时，我激活游戏结束文本，是和否text 和默认情况下显示在 yes 文本后面的 rawImage ，问题是我希望 yes 文本后面的图像使用箭头键下降到 no 并上升到 yes 。我想我用按键实现了它，但我觉得我需要一个协程来构建它，因为它只是离开游戏结束功能，而不等待用户输入，所以在此之后我怎样才能以正确的模式构建它？

我现在这样做了：

public class Manager : MonoBehaviour {

private float checkPoint = 0;
public GameObject Ball;
private GameObject cam;
private Object newBall;
public int lifes;
public Text Lifetext;
private bool gameIsOver = false;
private Text gameOver;
private Text playAgain;
private Text yes;
private Text no;
private RawImage TopMenuBall;


void Awake(){
    Lifetext = GameObject.Find("Lifes").GetComponent<Text>();
    gameOver = GameObject.Find("GameOver").GetComponent<Text>();
    playAgain = GameObject.Find("PlayAgain").GetComponent<Text>();
    yes = GameObject.Find("Yes").GetComponent<Text>();
    no = GameObject.Find("No").GetComponent<Text>();
    TopMenuBall = GameObject.Find("TopMenuBall").GetComponent<RawImage>();

    gameOver.enabled = false;
    playAgain.enabled = false;
    yes.enabled = false;
    no.enabled = false;
    TopMenuBall.enabled = false;
    TopMenuBall.transform.localPosition = new Vector3(-68,-41,0);

}

void Start(){
    lifes = 3;
    Lifetext.text = " x" + lifes;
    SpawnBall ();
    cam = GameObject.Find ("Main Camera");

}

public void LifeUp(){
    lifes++;
    Lifetext.text = "X " + lifes; 
}

public void LifeDown(){
    if (lifes <= 0) {
        GameOver ();
    } else {
        lifes--;
        Lifetext.text = "X " + lifes;
    }
}

public void GameOver(){
    Debug.Log ("gameover");
    gameOver.enabled = true;
    playAgain.enabled = true;
    yes.enabled = true;
    no.enabled = true;
    TopMenuBall.enabled = true;

    if (Input.GetKeyDown (KeyCode.DownArrow)) {
        TopMenuBall.transform.localPosition = new Vector3 (-68, -82, 0);
        Debug.Log ("up");
    }
    else if (Input.GetKeyDown(KeyCode.UpArrow))
        TopMenuBall.transform.localPosition = new Vector3(-68,-41,0);
}

void SpawnBall(){
    Vector3 spawnPosition = new Vector3 (0.02f,1.4f,-39f);
    Quaternion spawnRotation = Quaternion.identity;
    newBall = Instantiate (Ball, spawnPosition, spawnRotation);
    Camera.main.GetComponent<cameraMove>().player = (GameObject)newBall;
}

当用户失去所有生命时进入游戏结束功能并出现问题，我该如何解决？

Answer 1

您应该使用Update() 方法来获取用户输入。因为你需要不断地检查它，而Update方法正是针对这种情况而存在的，每帧调用一次。

所以，你的代码应该是这样的：

void Update() {
    if (TopMenuBall.enabled) {
        if (Input.GetKeyDown (KeyCode.DownArrow)) {
            TopMenuBall.transform.localPosition = new Vector3 (-68, -82, 0);
            Debug.Log ("up");
        }
        else if (Input.GetKeyDown(KeyCode.UpArrow))
            TopMenuBall.transform.localPosition = new Vector3(-68,-41,0);
    }
}