首先我们要在场景中添加一个quad平面作为地板， 然后指定Layer为Floor，，然后移除mesh renderer组件
然后添加脚本
脚本主要思想是从屏幕中心投出一条射线到地板， 然后获取对应坐标，然后转化成角度
最后然角色平滑转到该角度即可
using UnityEngine;public class PlayerMovement : MonoBehaviour{public float turnSmoothing = 5f;public float rayLength = 100f;private int floorMask;void Awake(){floorMask = LayerMask.GetMask("Floor");}void FixedUpdate(){TurningWithMouse();}void TurningWithMouse(){Ray camRay = Camera.main.ScreenPointToRay(Input.mousePosition);RaycastHit floorHit;if (Physics.Raycast(camRay, out floorHit, rayLength, floorMask)){Vector3 playerToMouse = floorHit.point – transform.position;playerToMouse.y = 0f;Quaternion targetRotation = Quaternion.LookRotation(playerToMouse, Vector3.up);Quaternion newRotation = Quaternion.Lerp(rigidbody.rotation, targetRotation, turnSmoothing * Time.deltaTime);rigidbody.MoveRotation(newRotation);}}}
找一个让心里安静和干净的地方，自己变得跟水晶一般透明，
