unity3d相机跟随物体平滑移动（C#代码）

using UnityEngine;

using System.Collections;


public class CameraFollow : MonoBehaviour {

    

        public Transform target;

        private Vector3 wantedPosition;

    

        private float currentX;

        private float currentY;

        private float currentZ;

    

        private float xVelocity = 0.0F;

        private float yVelocity = 0.0F;

        private float zVelocity = 0.0f;

        private float distanceSnapTime = 0.1f;

    

    // Update is called once per frame

    void Update () {

    

            Vector3 targetPos = target.position;

            

            wantedPosition.x =  targetPos.x;

            

            wantedPosition.z = targetPos.z - 5f;//Vector3.forward*distance;   

            

            wantedPosition.y = targetPos.y -2f;// + heightAbovePlayer;

            

            currentX = Mathf.SmoothDamp(currentX, wantedPosition.x, ref xVelocity, distanceSnapTime);

            

            currentY = Mathf.SmoothDamp(currentY, wantedPosition.y, ref yVelocity, distanceSnapTime);

            

            currentZ = Mathf.SmoothDamp(currentZ, wantedPosition.z, ref zVelocity, 0.5f);

            

            transform.position = new Vector3(currentX,currentY,currentZ);

            transform.LookAt(transform.position + new Vector3(0f,0.95f,1));

    }

}