Question

我在Unity中有一个使用移动脚本的角色，每次按下相应的按钮时都会转换它的位置x，y或z。现在我想改变我的代码只是在用户按下“a”或“d”时旋转字符并且不移动它，但是如果用户按下“w”按钮则向前移动它。我已经在互联网上找了它，发现我需要以某种方式使用Vector3.forward，但它不起作用。

这是我的剧本：

这是实际移动角色的脚本：（它附加到包含可移动字符的Player对象）

public class Move : MonoBehaviour {
float lerpTime;
float currentLerpTime;
float perc = 1;

Vector3 startPos;
Vector3 endPos;

bool firstInput;
public bool justJump;

// Update is called once per frame
void Update () {
    if (Input.GetButtonDown("up") || Input.GetButtonDown("down") || Input.GetButtonDown("left") || Input.GetButtonDown("right")) {
        if (perc == 1) {
            lerpTime = 1;
            currentLerpTime = 0;
            firstInput = true;
            justJump = true;
        }
    }
    startPos = gameObject.transform.position;

    if (Input.GetButtonDown("right") && gameObject.transform.position == endPos) {
        endPos = new Vector3(transform.position.x + 0.5f, transform.position.y, transform.position.z);
    }
    if (Input.GetButtonDown("left") && gameObject.transform.position == endPos) {
        endPos = new Vector3(transform.position.x - 0.5f, transform.position.y, transform.position.z);
    }
    if (Input.GetButtonDown("up") && gameObject.transform.position == endPos) {
        endPos = new Vector3(transform.position.x, transform.position.y, transform.position.z + 0.5f);
    }
    if (Input.GetButtonDown("down") && gameObject.transform.position == endPos) {
        endPos = new Vector3(transform.position.x, transform.position.y, transform.position.z - 0.5f);
    }

    if (firstInput == true) {
        currentLerpTime += Time.deltaTime * 5;
        perc = currentLerpTime / lerpTime;
        gameObject.transform.position = Vector3.Lerp(startPos, endPos, perc);
        if (perc > 0.8f)  {
            perc = 1;
        }

        if (Mathf.Round(perc) == 1) {
            justJump = false;
        }
    }
}

}

这是我的“旋转脚本”，它附加到可移动角色本身：

public class AnimationController : MonoBehaviour {

    Animator anim;
    public GameObject thePlayer;

    // Use this for initialization
    void Start () {
        anim = gameObject.GetComponent<Animator>();
    }

    // Update is called once per frame
    void Update () {
        Move moveScript = thePlayer.GetComponent<Move>();
        if (moveScript.justJump == true) {
            anim.SetBool("Jump", true);
        }
        else {
            anim.SetBool("Jump", false);
        }

        if (Input.GetButtonDown("right")) {
            gameObject.transform.rotation = Quaternion.Euler(0, 90, 0);
        }
        if (Input.GetButtonDown("left")) {
            gameObject.transform.rotation = Quaternion.Euler(0, -90, 0);
        }
        if (Input.GetButtonDown("up")) {
            gameObject.transform.rotation = Quaternion.Euler(0, 0, 0);
        }
        if (Input.GetButtonDown("down")) {
            gameObject.transform.rotation = Quaternion.Euler(0, 180, 0);
        }
    }
}

你能帮我一下吗？（最好带代码，如果可以:)）

Answer 1

假设您希望角色移动到它所面对的位置，并且尝试不对代码进行大量更改，这就是可以做到的：

首先，将您的脚本直接附加到您的可移动角色。

然后，将您的Move脚本更改为：

public class Move : MonoBehaviour {
float lerpTime;
float currentLerpTime;
float perc = 1;

Vector3 startPos;
Vector3 endPos;

bool firstInput;
public bool justJump;

// Update is called once per frame
void Update () {
    if (Input.GetButtonDown("up") || Input.GetButtonDown("down") || Input.GetButtonDown("left") || Input.GetButtonDown("right")) {
        if (perc == 1) {
            lerpTime = 1;
            currentLerpTime = 0;
            firstInput = true;
            justJump = true;
        }
    }
    startPos = gameObject.transform.position;

    if (Input.GetButtonDown("up") && gameObject.transform.position == endPos) {
        endPos = transform.position + gameObject.transform.rotation * (new Vector3(0, 0, 0.5f));
    }
    if (Input.GetButtonDown("down") && gameObject.transform.position == endPos) {
        endPos = transform.position + gameObject.transform.rotation * (new Vector3(0, 0, 0.5f));
    }

    if (firstInput == true) {
        currentLerpTime += Time.deltaTime * 5;
        perc = currentLerpTime / lerpTime;
        gameObject.transform.position = Vector3.Lerp(startPos, endPos, perc);
        if (perc > 0.8f)  {
            perc = 1;
        }

        if (Mathf.Round(perc) == 1) {
            justJump = false;
        }
    }
}

}

你的AnimationController脚本

public class AnimationController : MonoBehaviour {

    Animator anim;
    public GameObject thePlayer;

    // Use this for initialization
    void Start () {
        anim = gameObject.GetComponent<Animator>();
    }

    // Update is called once per frame
    void Update () {
        Move moveScript = thePlayer.GetComponent<Move>();
        if (moveScript.justJump == true) {
            anim.SetBool("Jump", true);
        }
        else {
            anim.SetBool("Jump", false);
        }

        if (Input.GetButtonDown("right")) {
            gameObject.transform.rotation = gameObject.transform.rotation * Quaternion.Euler(0, 90, 0);
        }
        if (Input.GetButtonDown("left")) {
            gameObject.transform.rotation = gameObject.transform.rotation * Quaternion.Euler(0, 90, 0);
        }
    }
}

这将使您的角色仅在您按下左右按钮时旋转，并且仅在您按下向上和向下按钮时才会移动。虽然这解决了你的问题，但这不是为你的角色运动编写脚本的最佳方式。

我建议您阅读有关状态机设计模式的更多信息。罗伯特·尼斯特罗姆（Robert Nystrom）的这篇book有一章关于它并且非常容易阅读。此外，它可以免费在线阅读：）

如何让我的角色在Unity中向前移动？

1 个答案: