用unity实现第三人称相机控制脚本

可以使用以下脚本来实现Unity中第三人称相机的控制：

using UnityEngine;

public class ThirdPersonCamera : MonoBehaviour
{
    public Transform target;  // 跟随的目标物体
    public float distance = 5.0f;  // 相机与目标物体的距离
    public float height = 2.0f;  // 相机距离目标物体的高度
    public float damping = 2.0f;  // 相机移动的平滑度
    public bool smoothRotation = true;  // 是否平滑旋转

    void LateUpdate()
    {
        if (!target) return;

        float wantedRotationAngle = target.eulerAngles.y;
        float wantedHeight = target.position.y + height;

        float currentRotationAngle = transform.eulerAngles.y;
        float currentHeight = transform.position.y;

        currentRotationAngle = Mathf.LerpAngle(currentRotationAngle, wantedRotationAngle, damping * Time.deltaTime);
        currentHeight = Mathf.Lerp(currentHeight, wantedHeight, damping * Time.deltaTime);

        Quaternion currentRotation = Quaternion.Euler(0, currentRotationAngle, 0);

        transform.position = target.position;
        transform.position -= currentRotation * Vector3.forward * distance;
        transform.position = new Vector3(transform.position.x, currentHeight, transform.position.z);

        if (smoothRotation)
        {
            transform.LookAt(target);
        }
        else
        {
            transform.rotation = target.rotation;
        }
    }
}

将此脚本挂载到相机上，并将要跟随的目标物体指定为target，即可实现第三人称相机的控制。