Unity 点击按钮摄像机围绕物体旋转指定角度

可以使用以下代码实现：

public class RotateCamera : MonoBehaviour
{
    public Transform target;
    public float rotationSpeed = 5.0f;
    public float maxRotationAngle = 90.0f;

    private Vector3 offset;

    void Start()
    {
        offset = transform.position - target.position;
    }

    void LateUpdate()
    {
        float horizontal = Input.GetAxis("Horizontal") * rotationSpeed;
        float vertical = Input.GetAxis("Vertical") * rotationSpeed;

        transform.RotateAround(target.position, Vector3.up, horizontal);

        Vector3 cameraPosition = transform.position;
        Vector3 targetPosition = target.position + offset;

        Vector3 direction = cameraPosition - targetPosition;
        Quaternion rotation = Quaternion.LookRotation(direction, Vector3.up);

        float angle = Quaternion.Angle(transform.rotation, rotation);

        if (angle < maxRotationAngle)
        {
            transform.rotation = rotation;
        }
    }
}

这段代码实现了一个摄像机围绕物体旋转的效果，可以通过水平和垂直输入控制旋转方向和速度，同时限制了最大旋转角度。