Unity3D Mecanim 角色在转弯前停止

Question

所以在过去的几天里，我一直在使用 mecanim 在 Unity3D 中开发角色控制器。它不是基于我自己的代码，而是基于我在网上找到的教程，当然该教程是针对 Unity 4 的，所以我运行会遇到一些小问题，但我什么都做不到。到现在还没修复。

所以基本问题是当我尝试进行 180 度大转弯时，我的角色似乎（毫无理由地）停止了他所有的动力并慢慢转身，之后他又继续像往常一样运行 ,但我不明白他为什么突然不转了。

这是我的角色逻辑脚本：

using UnityEngine;
using System.Collections;

public class characterLogic : MonoBehaviour {

[SerializeField]
private Animator animator;
[SerializeField]
private FollowCamera gamecam;
[SerializeField]
private float directionSpeed = 1.5f;
[SerializeField]
private float directionDampTime = 0.25f;
[SerializeField]
private float rotationDegreePerSecond = 120f;
[SerializeField]
private float speedDampTime = 0.05f;

private float speed = 0.0f;
private float direction = 0.0f;
private float charAngle = 0f;
private float horizontal = 0.0f;
private float vertical = 0.0f;
private AnimatorStateInfo stateInfo;
private AnimatorTransitionInfo transInfo;

private int m_LocomotionId = 0;
private int m_LocomotionPivotLId = 0;
private int m_LocomotionPivotRId = 0;
private int m_LocomotionPivotLTransId = 0;  
private int m_LocomotionPivotRTransId = 0;  

public Animator Animator
{
    get
    {
        return this.animator;
    }
}

public float Speed
{
    get
    {
        return this.speed;
    }
}

public float LocomotionThreshold { get { return 0.2f; } }


// Use this for initialization
void Start () {


    animator = GetComponent<Animator>();

    if(animator.layerCount >= 2)
    {
        animator.SetLayerWeight(1, 1);
    }   

    m_LocomotionId = Animator.StringToHash("Base Layer.Locomotion");
    m_LocomotionPivotLId = Animator.StringToHash("Base Layer.LocomotionPivotL");
    m_LocomotionPivotRId = Animator.StringToHash("Base Layer.LocomotionPivotR");
    m_LocomotionPivotLTransId = Animator.StringToHash("Base Layer.Locomotion -> Base Layer.LocomotionPivotL");
    m_LocomotionPivotRTransId = Animator.StringToHash("Base Layer.Locomotion -> Base Layer.LocomotionPivotR");

}

public void keysToWorldSpace (Transform root, Transform camera, ref float directionOut, ref float speedOut, ref float angleOut, bool isPivoting){

    Vector3 rootDirection = root.forward;

    Vector3 keyDirection = new Vector3 (horizontal, 0, vertical);

    speedOut = keyDirection.sqrMagnitude;

    //get camera rotation
    Vector3 cameraDirection = camera.forward;
    cameraDirection.y = 0.0f;
    Quaternion referentialShift = Quaternion.FromToRotation (Vector3.forward, cameraDirection);

    //convert key input to world space coordinates
    Vector3 moveDirection = referentialShift * keyDirection;
    Vector3 axisSign = Vector3.Cross (moveDirection, rootDirection);

    Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), moveDirection, Color.green);
    Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), axisSign, Color.red);
    Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), rootDirection, Color.magenta);
    Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), keyDirection, Color.blue);

    float angleRootToMove = Vector3.Angle(rootDirection, moveDirection) * (axisSign.y >= 0 ? -1f : 1f);
    if (!isPivoting)
    {
        angleOut = angleRootToMove;
    }

    angleRootToMove /= 180f;

    directionOut = angleRootToMove * directionSpeed;

}

// Update is called once per frame
void Update () {

    if (animator) {

        stateInfo = animator.GetCurrentAnimatorStateInfo(0);
        transInfo = animator.GetAnimatorTransitionInfo(0);

        horizontal = Input.GetAxis("Horizontal");
        vertical = Input.GetAxis("Vertical");

        charAngle = 0f;
        direction = 0f;

        keysToWorldSpace (this.transform, gamecam.transform, ref direction, ref speed, ref charAngle, isInPivot());

        animator.SetFloat ("Speed", speed);
        animator.SetFloat ("Direction", direction, directionDampTime, Time.deltaTime);

        if(speed > LocomotionThreshold){

            if(!isInPivot()){

                Animator.SetFloat("Angle", charAngle);

            }

        }
        if(speed < LocomotionThreshold && Mathf.Abs(horizontal) < 0.05f){

            animator.SetFloat("Direction", 0f);
            animator.SetFloat("Speed", speed, speedDampTime, Time.deltaTime);

        }

        Debug.Log(Speed);
        Debug.Log(charAngle);

    }

}

void FixedUpdate() {

    if (IsInLocomotion () && ((direction >= 0 && horizontal >= 0) || (direction < 0 && horizontal < 0))) {

        Vector3 rotationAmount = Vector3.Lerp(Vector3.zero, new Vector3(0f, rotationDegreePerSecond * (horizontal < 0f ? -1f : 1f), 0f), Mathf.Abs(horizontal));
        Quaternion deltaRotation = Quaternion.Euler(rotationAmount * Time.deltaTime);
        this.transform.rotation = (this.transform.rotation * deltaRotation);

    }

}

public bool isInPivot(){

    return stateInfo.fullPathHash == m_LocomotionPivotLId || 
            stateInfo.fullPathHash == m_LocomotionPivotRId || 
            transInfo.nameHash == m_LocomotionPivotLTransId || 
            transInfo.nameHash == m_LocomotionPivotRTransId;

}

public bool IsInLocomotion(){

    return stateInfo.fullPathHash == m_LocomotionId;

}

}

我认为它要么与此脚本有关，要么与 mecanim 中的转换有关。我还将本教程的成品（在此处找到： https://github.com/jm991/UnityThirdPersonTutorial ）移植到 Unity 5 并且在那里没有遇到同样的问题，我不完全确定给我这个问题的区别是什么，但是如果有知道的或者知道的请告诉我

Answer 1

我自己已经发现问题了！

如果有人对未来感兴趣，这里是新代码：

using UnityEngine;
using System.Collections;

public class characterLogic : MonoBehaviour {

[SerializeField]
private Animator animator;
[SerializeField]
private FollowCamera gamecam;
[SerializeField]
private float directionSpeed = 1.5f;
[SerializeField]
private float directionDampTime = 0.25f;
[SerializeField]
private float rotationDegreePerSecond = 120f;
[SerializeField]
private float speedDampTime = 0.05f;
[SerializeField]
private float fovDampTime = 3f;

private float horizontal = 0.0f;
private float vertical = 0.0f;
private float speed = 0.0f;
private float direction = 0.0f;
private float charAngle = 0f;
private const float SPRINT_SPEED = 2.0f;
private const float SPRINT_FOV = 75.0f;
private const float NORMAL_FOV = 60.0f;
private const float WALK_SPEED = 0.1f;
private AnimatorStateInfo stateInfo;
private AnimatorTransitionInfo transInfo;

private int m_LocomotionId = 0;
private int m_LocomotionPivotLId = 0;
private int m_LocomotionPivotRId = 0;
private int m_LocomotionPivotLTransId = 0;  
private int m_LocomotionPivotRTransId = 0;  

public Animator Animator
{
    get
    {
        return this.animator;
    }
}

public float Speed
{
    get
    {
        return this.speed;
    }
}

public float LocomotionThreshold { get { return 0.2f; } }


// Use this for initialization
void Start () {


    animator = GetComponent<Animator>();

    if(animator.layerCount >= 2)
    {
        animator.SetLayerWeight(1, 1);
    }   

    m_LocomotionId = Animator.StringToHash("Base Layer.Locomotion");
    m_LocomotionPivotLId = Animator.StringToHash("Base Layer.LocomotionPivotL");
    m_LocomotionPivotRId = Animator.StringToHash("Base Layer.LocomotionPivotR");
    m_LocomotionPivotLTransId = Animator.StringToHash("Base Layer.Locomotion -> Base Layer.LocomotionPivotL");
    m_LocomotionPivotRTransId = Animator.StringToHash("Base Layer.Locomotion -> Base Layer.LocomotionPivotR");

}

public void keysToWorldSpace (Transform root, Transform camera, ref float directionOut, ref float speedOut, ref float angleOut, bool isPivoting){

    Vector3 rootDirection = root.forward;

    Vector3 keyDirection = new Vector3 (horizontal, 0, vertical);

    speedOut = keyDirection.sqrMagnitude;

    //get camera rotation
    Vector3 cameraDirection = camera.forward;
    cameraDirection.y = 0.0f;
    Quaternion referentialShift = Quaternion.FromToRotation(Vector3.forward, Vector3.Normalize(cameraDirection));

    //convert key input to world space coordinates
    Vector3 moveDirection = referentialShift * keyDirection;
    Vector3 axisSign = Vector3.Cross (moveDirection, rootDirection);

    Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), moveDirection, Color.green);
    Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), axisSign, Color.red);
    Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), rootDirection, Color.magenta);
    Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), keyDirection, Color.blue);

    float angleRootToMove = Vector3.Angle(rootDirection, moveDirection) * (axisSign.y >= 0 ? -1f : 1f);
    if (!isPivoting)
    {
        angleOut = angleRootToMove;
    }

    angleRootToMove /= 180f;

    directionOut = angleRootToMove * directionSpeed;

}

// Update is called once per frame
void Update () {

    if (animator) {

        stateInfo = animator.GetCurrentAnimatorStateInfo(0);
        transInfo = animator.GetAnimatorTransitionInfo(0);

        horizontal = Input.GetAxis("Horizontal");
        vertical = Input.GetAxis("Vertical");

        charAngle = 0f;
        direction = 0f;
        float charSpeed = 0f;

        keysToWorldSpace (this.transform, gamecam.transform, ref direction, ref charSpeed, ref charAngle, isInPivot());

        if (Input.GetButton("Sprint"))
        {
            speed = Mathf.Lerp(speed, SPRINT_SPEED, Time.deltaTime);
            gamecam.GetComponent<Camera>().fieldOfView = Mathf.Lerp(gamecam.GetComponent<Camera>().fieldOfView, SPRINT_FOV, fovDampTime * Time.deltaTime);
        }
        else
        {
            speed = charSpeed;
            gamecam.GetComponent<Camera>().fieldOfView = Mathf.Lerp(gamecam.GetComponent<Camera>().fieldOfView, NORMAL_FOV, fovDampTime * Time.deltaTime);      
        }

        if (Input.GetButton("Walk"))
        {
            speed = Mathf.Lerp(speed, WALK_SPEED, Time.deltaTime);
        }
        else
        {
            speed = charSpeed;      
        }

        animator.SetFloat("Speed", speed, speedDampTime, Time.deltaTime);
        animator.SetFloat("Direction", direction, directionDampTime, Time.deltaTime);

        if(speed > LocomotionThreshold){

            if(!isInPivot()){

                Animator.SetFloat("Angle", charAngle);

            }

        }
        if(speed < LocomotionThreshold && Mathf.Abs(horizontal) < 0.05f){

            animator.SetFloat("Direction", 0f);
            animator.SetFloat("Speed", speed, speedDampTime, Time.deltaTime);

        }

        Debug.Log(Speed);
        Debug.Log(charAngle);

    }

}

void FixedUpdate() {

    if (IsInLocomotion () && ((direction >= 0 && horizontal >= 0) || (direction < 0 && horizontal < 0))) {

        Vector3 rotationAmount = Vector3.Lerp(Vector3.zero, new Vector3(0f, rotationDegreePerSecond * (horizontal < 0f ? -1f : 1f), 0f), Mathf.Abs(horizontal));
        Quaternion deltaRotation = Quaternion.Euler(rotationAmount * Time.deltaTime);
        this.transform.rotation = (this.transform.rotation * deltaRotation);

    }

}

public bool isInPivot(){

    return stateInfo.fullPathHash == m_LocomotionPivotLId || 
            stateInfo.fullPathHash == m_LocomotionPivotRId || 
            transInfo.nameHash == m_LocomotionPivotLTransId || 
            transInfo.nameHash == m_LocomotionPivotRTransId;

}

public bool IsInLocomotion(){

    return stateInfo.fullPathHash == m_LocomotionId;

}

}

事实证明，编写原始代码的人在他的速度上使用了 dampTime，因此如果他松开按钮，他不会立即站着不动。这是他还没有在他的教程中解释的东西，所以我一定是错过了。无论如何，我希望这可以帮助将来遇到类似问题的任何人。

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