第一人称视角操作

此功能主要是借鉴YouTube上一个博主的教程，写的蛮好我就搬运过来让大家也试试。

1、控制对象与镜头是子父级关系

2、控制器对象添加CharacterController，Rigidbody组件如下：

3、重头戏：创建PlayerController脚本并比此脚本挂到控制器上

其原理是：左右旋转是控制父物体的欧拉角的Y轴

 transform.Rotate(0, Input.GetAxis("Mouse X") * sensetivity,0);

上下点头是子物体相机的欧拉角Z轴

 playerCamera.Rotate(-Input.GetAxis("Mouse Y") * sensetivity, 0, 0);

水平方向

   moveDirection = new Vector3(Input.GetAxis("Horizontal")*moveSpeed, moveDirection.y, Input.GetAxis("Vertical")*moveSpeed);
   moveDirection = transform.TransformDirection(moveDirection);

跳跃：

 if (controller.isGrounded)
 {
     if (Input.GetButton("Jump"))
         moveDirection.y = jumpForce;
     else
         moveDirection.y = 0;
 }

移动

        moveDirection.y -= gravity * Time.deltaTime;
        controller.Move(moveDirection*Time.deltaTime);

4、源代码奉上：

using UnityEngine;

public class PlayerController : MonoBehaviour
{
    [SerializeField] private float moveSpeed = 6f;
    [SerializeField] private float jumpForce = 10;
    [SerializeField] private float gravity = 15f;

    private Vector3 moveDirection;

    [Header("Camera details")]
    public float sensetivity = 1f;
    private Transform playerCamera;
    private CharacterController controller;

    void Start()
    {
        controller = GetComponent();
        playerCamera = GetComponentInChildren().transform;

        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;
    }

    void Update()
    {
        transform.Rotate(0, Input.GetAxis("Mouse X") * sensetivity,0);
        playerCamera.Rotate(-Input.GetAxis("Mouse Y") * sensetivity, 0, 0);
        if (playerCamera.localRotation.eulerAngles.y != 0) 
            playerCamera.Rotate(Input.GetAxis("Mouse Y")*sensetivity,0,0);
        

        moveDirection = new Vector3(Input.GetAxis("Horizontal")*moveSpeed, moveDirection.y, Input.GetAxis("Vertical")*moveSpeed);
        moveDirection = transform.TransformDirection(moveDirection);

        if (controller.isGrounded)
        {
            if (Input.GetButton("Jump"))
                moveDirection.y = jumpForce;
            else
                moveDirection.y = 0;
        }

        moveDirection.y -= gravity * Time.deltaTime;
        controller.Move(moveDirection*Time.deltaTime);
    }
}