问单位接地状态对角色来说是闪烁的。.isGrounded正在使用，但仍在闪烁

EN

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerCharacterController: MonoBehaviour {

    static Animator anim;

    public bool walking;

    public GameObject playerModel, Hero;
    //Transforms
    public Transform playerCam, character, centerPoint;

    private Vector3 moveDirection;

    //character controller declaration
    CharacterController player;

    //Mouse Rotation
    private float rotX, rotY;
    //Mouse Y Position
    public float mouseYPosition = 1f; 
    //Mouse Sensitivity
    public float Sensitivity = 10f;
    //Mouse Zoom
    private float zoom;
    public float zoomSpeed = 2;
    //Clamping Zoom
    public float zoomMin = -2f;
    public float zoomMax = -10f;
    public float rotationSpeed = 5f;
    //Move Front Back left & Right
    private float moveFB, moveLR;   
    //Movement Speed
    public float Speed = 2f;
    //Velocity of Gravity
    public float verticalVelocity;
    //Jump Distance
    public float jumpDist = 5f;
    //Multiple Jumps
    int jumpTimes;
    //To use with Dialogue Manager
    public DialogueManager DiagM;

    public AudioClip jumpSound;
    public AudioClip HurtSound;
    public AudioClip PunchSound;

    AudioSource audioSource;

    //knockback

    public float knockBackForce;
    public float knockBackTime;
    private float knockBackCounter;


    // Use this for initialization
    void Start ()   
    {
        //character controller
        player = GameObject.Find("Player").GetComponent<CharacterController> ();

        StartCoroutine(MyCoroutine(character));

        anim = GetComponent<Animator>();

        //mouse zoom
        zoom = -3;  
        centerPoint.transform.position = playerCam.transform.position;
        centerPoint.transform.parent = null;
        audioSource = GetComponent<AudioSource>();
    }

    IEnumerator MyCoroutine (Transform character)
    {
        if (player.isGrounded == true)

        {
        anim.SetBool("isFalling",false);
        //anim.SetBool("isIdling", true);
        yield return new WaitForSeconds(0);
        }

    }
    // Update is called once per frame

    void Update ()
    {        
        //Mouse Zoom Input
        zoom += Input.GetAxis ("Mouse ScrollWheel") * zoomSpeed;

        if (zoom > zoomMin)
            zoom = zoomMin;
        if (zoom < zoomMax)
            zoom = zoomMax;

        //Mouse Camera Input
        playerCam.transform.localPosition = new Vector3 (0, 0, zoom);

        //Mouse Rotation

        rotX += Input.GetAxis ("Mouse X") * Sensitivity;
        rotY -= Input.GetAxis ("Mouse Y") * Sensitivity;      

        //Clamp Camera
        rotY = Mathf.Clamp (rotY, -60f, 60f);
        playerCam.LookAt (centerPoint);
        centerPoint.localRotation = Quaternion.Euler (rotY, rotX, 0);

        //Movement Speed
        if (knockBackCounter <= 0)
        {   
            moveDirection = (transform.forward * Input.GetAxis("Vertical")) + (transform.right * Input.GetAxis("Horizontal"));
            moveDirection = moveDirection * Speed;
            moveDirection.y = verticalVelocity;

            player.Move(moveDirection * Time.deltaTime);



            //Movement Rotation

            centerPoint.position = new Vector3 (character.position.x, character.position.y + mouseYPosition, character.position.z);

            //knockback disable
            //Movement Input

            if (Input.GetAxis("Vertical") != 0 || Input.GetAxis("Horizontal") != 0)

            {
                transform.rotation = Quaternion.Euler(0f, centerPoint.rotation.eulerAngles.y, 0f);
                Quaternion turnAngle = Quaternion.LookRotation(new Vector3(moveDirection.x, 0f, moveDirection.z));
                playerModel.transform.rotation = Quaternion.Slerp(playerModel.transform.rotation, turnAngle, Time.deltaTime * rotationSpeed);

                if (player.isGrounded == true)
                {
                    anim.SetBool("isWalking", true);
                    anim.Play("Running");
                }
            }
            else 
            {
                StartCoroutine(MyCoroutine(character));
            }

            if (Input.GetButtonDown("LHand"))
            {
                audioSource.PlayOneShot(PunchSound, 1F);
                anim.Play("RPunch");
            }

            if (player.isGrounded == true)
            {
                jumpTimes = 0;
                //verticalVelocity = -Physics.gravity.y * Time.deltaTime;
                verticalVelocity = 0;
            }
            else
            {
                verticalVelocity += Physics.gravity.y * Time.deltaTime;
                anim.SetBool("isWalking", false);
                anim.SetBool("isFalling", true);
            }


            if (jumpTimes < 1)
            {
                if (Input.GetButtonDown("Jump"))
                {
                    verticalVelocity += jumpDist;
                    anim.Play("Jump");
                    audioSource.PlayOneShot(jumpSound, 1F);
                    jumpTimes += 1;
                }
            }
        }
        else
        {
            knockBackCounter -= Time.deltaTime;
        }
    }

    public void Knockback(Vector3 direction)
    {
        knockBackCounter = knockBackTime;
        anim.Play("Jump");
        audioSource.PlayOneShot(HurtSound, 50F);
        moveDirection = direction * knockBackForce;
        moveDirection.y = knockBackForce;
    }
}