UnityFPSスクリプト歩行モーション込み

using UnityEngine;

public class fps : MonoBehaviour
{
    public float moveSpeed = 10f;
    public float lookSpeed = 2f;
    public float jumpForce = 5f;
    public float rotationDamping = 0.95f;
    public Transform playerCamera;
    public Camera firstPersonCamera;
    public Camera thirdPersonCamera;
    public Animator animator;
    private Rigidbody rb;
    private float xRotation = 0f;
    private bool isFirstPerson = true;


    void Start()
    {
        rb = GetComponent<Rigidbody>();
        rb.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationZ;
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;

        // 初期状態で一人称視点カメラを有効にする
        firstPersonCamera.enabled = true;
        thirdPersonCamera.enabled = false;
        animator = GetComponent<Animator>();
    }

    void FixedUpdate()
    {
        MovePlayer();
        DampenRotation();
    }

    void Update()
    {
        LookAround();
        Jump();
        SwitchCamera();
    }

    void MovePlayer()
    {
        float moveHorizontal = Input.GetAxis("Horizontal");
        float moveVertical = Input.GetAxis("Vertical");

        Vector3 movement = transform.right * moveHorizontal + transform.forward * moveVertical;
        Vector3 force = movement * moveSpeed;

        rb.AddForce(new Vector3(force.x, 0, force.z));
        if (movement != Vector3.zero) {
            animator.SetBool("isWalking", true);
            Debug.Log("running");
        }
        else{
            Debug.Log("stop");
            animator.SetBool("isWalking", false);
        }
    }

    void LookAround()
    {
        float mouseX = Input.GetAxis("Mouse X") * lookSpeed;
        float mouseY = Input.GetAxis("Mouse Y") * lookSpeed;

        xRotation -= mouseY;
        xRotation = Mathf.Clamp(xRotation, -90f, 90f);

        playerCamera.localRotation = Quaternion.Euler(xRotation, 0f, 0f);
        transform.Rotate(Vector3.up * mouseX);
    }

    void DampenRotation()
    {
        Vector3 angularVelocity = rb.angularVelocity;
        angularVelocity.x *= rotationDamping;
        angularVelocity.z *= rotationDamping;
        rb.angularVelocity = angularVelocity;
    }

    void Jump()
    {
        if (Input.GetButtonDown("Jump"))
        {
            rb.AddForce(Vector3.up * jumpForce, ForceMode.Impulse);
            animator.SetBool("isJump", true);
        }
        else
        {
            animator.SetBool("isJump", false);
        }
    }

    void SwitchCamera()
    {
        // カメラを切り替える
        if (Input.GetKeyDown(KeyCode.C))
        {
            isFirstPerson = !isFirstPerson;
            firstPersonCamera.enabled = isFirstPerson;
            thirdPersonCamera.enabled = !isFirstPerson;

            // プレイヤーのカメラを設定する
            playerCamera = isFirstPerson ? firstPersonCamera.transform : thirdPersonCamera.transform;
        }
    }
}