1.效果实现：
简易版链接: /s/1kC9DOpQztD-a6G-cM42tgQ 提取码: ure9
全视角旋转简易视频
带动画版视频：
全视角（人物动画，人物方向）
2.进行Preject Settings设置
Input Manager
复制Horizontal，改轴
复制Vertical，改轴
将MouseY修改反向，使得鼠标上下移动控制摄像机正常
3.代码实现
PlayerCharacter
代码主要实现了功能有：
1.判断物体是否在地板上，主要是为了实现落地时的动画
2.动画实现：静止，行走，跑步，跳跃，落地动画（这里是Asset Store资源自带的动画,可自行去寻找资源，进行参数调整即可，或直接Asset Store里面查询3D角色，可以找到同一个资源）
3.人物朝向摄像机方向水平分量，并以此为正方向进行前后左右移动并旋转
注意：设置一个root，也就是摄像对准的目标
PlayerCharacter挂在在人物身上，将摄像机和对准目标进行选定
using UnityEngine;[RequireComponent(typeof(Rigidbody))]public class PlayerCharacter : MonoBehaviour{[SerializeField] private float m_WalkSpeed = 2.0f;//行走速度[SerializeField] private float m_RunSpeed = 3.5f;//跑步速度[SerializeField] private float m_RotateSpeed = 3.0f;//旋转速度[SerializeField] private float m_JumpForce = 300.0f;//跳跃力度[SerializeField] private float m_RunningStart = 1.0f;// 跑步启动时长[SerializeField] private Photographer _photographer;//摄像机[SerializeField] private Transform _followingTarget;//摄像对准public Vector3 CurrentInput { get; private set; }public float MaxWalkSpeed = 5;// memberprivate Rigidbody m_RigidBody;private Animator m_Animator = null;//动画private float m_MoveTime = 0;private float m_MoveSpeed = 0.0f;private bool m_IsGround = true;private void Awake(){m_RigidBody = GetComponent<Rigidbody>();m_Animator = this.GetComponentInChildren<Animator>();//动画m_MoveSpeed = m_WalkSpeed;_photographer.InitCamera(_followingTarget);}private void Update(){if (m_RigidBody == null) return;//为空直接返回if (m_Animator == null) return;// 是否离地float rayDistance = 0.3f;//射线的距离Vector3 rayOrigin = (this.transform.position + (Vector3.up * rayDistance * 0.5f));//射线的距离bool ground = Physics.Raycast(rayOrigin, Vector3.down, rayDistance, LayerMask.GetMask("Default")); //判断角色当前是否在地面上if (ground != m_IsGround){m_IsGround = ground;// landing动画if (m_IsGround){m_Animator.Play("landing");}}// inputfloat h = Input.GetAxis("Horizontal");//水平float v = Input.GetAxis("Vertical");//垂直bool isMove = ((h != 0) || (v != 0));m_MoveTime = isMove ? (m_MoveTime + Time.deltaTime) : 0;bool isRun = (m_RunningStart <= m_MoveTime);// move speed (walk / run)float moveSpeed = isRun ? m_RunSpeed : m_WalkSpeed;m_MoveSpeed = isMove ? Mathf.Lerp(m_MoveSpeed, moveSpeed, (8.0f * Time.deltaTime)) : m_WalkSpeed;if (isMove){// 获取当前摄像机的朝向Vector3 cameraForward = _photographer.transform.forward;cameraForward.y = 0;cameraForward.Normalize();// 将物体的旋转朝向设为摄像机的朝向transform.rotation = Quaternion.LookRotation(cameraForward);Vector3 inputDirection = new Vector3(h, 0, v);if (inputDirection != Vector3.zero){float rotationAmount = Vector3.Angle(Vector3.forward, inputDirection) * Mathf.Sign(inputDirection.x);transform.Rotate(0, rotationAmount, 0);}}m_Animator.SetBool("isMove", isMove);m_Animator.SetBool("isRun", isRun);// jumpif (Input.GetButtonDown("Jump") && m_IsGround)//按键jump并且在地面{m_Animator.Play("jump");m_RigidBody.AddForce(Vector3.up * m_JumpForce);}UpdateMovementInput();}private void FixedUpdate(){m_RigidBody.MovePosition(m_RigidBody.position + CurrentInput * m_MoveSpeed * Time.fixedDeltaTime);}private void UpdateMovementInput(){Quaternion rot = Quaternion.Euler(0, _photographer.Yaw, 0);SetMovementInput(rot * Vector3.forward * Input.GetAxis("Vertical") +rot * Vector3.right * Input.GetAxis("Horizontal"));}public void SetMovementInput(Vector3 input){CurrentInput = Vector3.ClampMagnitude(input, 1);}}
Photographer
实现摄像机由鼠标控制全方位旋转
注意：Photographer代码挂在在Photographer上，并对参数进行调整，将ArmLengthCurve前后坐标设置为（-90，0.8），（90，10），实现上下旋转时镜头的拉近和推远，每个结点要选择Clamp平滑
using System;using System.Collections;using System.Collections.Generic;using TMPro;using UnityEngine;public class Photographer : MonoBehaviour{public float Pitch { get; private set; }//记录绕X旋转量public float Yaw { get; private set; }//绕y轴旋转public float mouseSensitivity = 5;//鼠标灵敏度public float cameraRotatingSpeed = 80;public float cameraYSpeed = 5;private Transform _target;private Transform _camera;[SerializeField] private AnimationCurve _armLengthCurve;private void Awake(){_camera = transform.GetChild(0);}// Start is called before the first frame updateprivate void Start(){}public void InitCamera(Transform target){_target = target;transform.position = target.position;}// Update is called once per frameprivate void Update(){UpdateRotation();UpdatePosition();UpdateArmLength();}private void UpdateRotation(){Yaw += Input.GetAxis("Mouse X") * mouseSensitivity;Yaw += Input.GetAxis("CameraRateX") * cameraRotatingSpeed * Time.deltaTime;Pitch += Input.GetAxis("Mouse Y") * mouseSensitivity;Pitch += Input.GetAxis("CameraRateY") * cameraRotatingSpeed * Time.deltaTime;Pitch = Mathf.Clamp(Pitch, -90, 90);//限制在上下90度transform.rotation = Quaternion.Euler(Pitch, Yaw, 0);}private void UpdatePosition(){Vector3 position = _target.position;float newY = Mathf.Lerp(transform.position.y, position.y, Time.deltaTime * cameraYSpeed);transform.position = new Vector3(position.x, newY, position.z);}private void UpdateArmLength(){_camera.localPosition = new Vector3(0, 0, _armLengthCurve.Evaluate(Pitch) * -1);}}
4.总结
实现摄像机全视角旋转和人物移动
学习参考：【Unity创作心得#11】第三人称自由视角与移动：一个比较完备的实现方法_哔哩哔哩_bilibili
