UNITY 虚拟相机 Cinemachine 第三人称视角 新输入系统 超简单

在人物模型添加一个空的子物体，作为相机的跟随点，位置大概在胸口。

添加一个虚拟相机

虚拟相机配置如下

在人物模型上添加PlayerInput组件

Action文件配置如下

创建NeirInputs和NeirController脚本并挂载到人物模型上
NeirInputs负责玩家输入
NeirController负责根据输入的值旋转相机

脚本如下

NeirInputs

using UnityEngine;
#if ENABLE_INPUT_SYSTEM && STARTER_ASSETS_PACKAGES_CHECKED
using UnityEngine.InputSystem;
#endif

public class NeirInputs : MonoBehaviour
{
    [Header("角色输入值")]
    public Vector2 look;

#if !UNITY_IOS || !UNITY_ANDROID
    public bool cursorLocked = true;
    public bool cursorInputForLook = true;
#endif

#if ENABLE_INPUT_SYSTEM && STARTER_ASSETS_PACKAGES_CHECKED
	public void OnLook(InputValue value)
	{
		if (cursorInputForLook)
		{
			LookInput(value.Get());
		}
	}
#else
	// old input sys if we do decide to have it (most likely wont)...
#endif

	public void LookInput(Vector2 newLookDirection)
    {
        look = newLookDirection;
    }

#if !UNITY_IOS || !UNITY_ANDROID
    private void OnApplicationFocus(bool focus)
    {
        SetCursorState(cursorLocked);
    }

    private void SetCursorState(bool newState)
    {
        Cursor.lockState = newState ? CursorLockMode.Locked : CursorLockMode.None;
    }
#endif
}

NeirController

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

[RequireComponent(typeof(CharacterController))]
public class NeirController : MonoBehaviour
{

    [Header("虚拟相机")]
    [Tooltip("")]
    public GameObject CinemachineCameraTarget;
    [Tooltip("")]
    public float TopClamp = 70.0f;
    [Tooltip("")]
    public float BottomClamp = -30.0f;
    [Tooltip("")]
    public float CameraAngleOverrride = 0.0f;
    [Tooltip("")]
    public bool LockCAmeraPosition = false;

    //cinemachine
    private float _cinemachineTargetYaw;
    private float _cinemachineTargetPitch;

    private NeirInputs _input;
    private GameObject _mainCamera;

    private const float _threshold = 0.01f;

    private void Awake()
    {
        if(_mainCamera == null)
        {
            _mainCamera = GameObject.FindGameObjectWithTag("MainCamera");
        }
    }

    private void Start()
    {
        _input = GetComponent();
    }

    private void LateUpdate()
    {
        CameraRotation();
    }

    private void CameraRotation()
    {
        if(_input.look.sqrMagnitude >= _threshold && !LockCAmeraPosition)
        {
            _cinemachineTargetYaw += _input.look.x * Time.deltaTime;
            _cinemachineTargetPitch += _input.look.y * Time.deltaTime;
        }

        _cinemachineTargetYaw = ClampAngle(_cinemachineTargetYaw, float.MinValue, float.MaxValue);
        _cinemachineTargetPitch = ClampAngle(_cinemachineTargetPitch, BottomClamp, TopClamp);

        CinemachineCameraTarget.transform.rotation = Quaternion.Euler(_cinemachineTargetPitch + CameraAngleOverrride, _cinemachineTargetYaw, 0.0f);
    }

    private static float ClampAngle(float lfAngle, float lfMin, float lfMax)
    {
        if (lfAngle < -360f) lfAngle += 360f;
        if (lfAngle > 360f) lfAngle -= 360f;
        return Mathf.Clamp(lfAngle, lfMin, lfMax);
    }
}