Third-person view developing

Normally,binding camera with Player into Third-person view equals to let camera be Player's child ,but in our case the Player moving way is rolling ,so the camera will roll with player ,which is not expected

write a script to get and set camera offset relative to Player

declare GameObject instance to bind Player
then declare a vector3 var to store offset

public GameObject player;
private Vector3 m_Offset;

at start function,store initial offset

void Start()
{
    m_Offset = transform.position - player.transform.position;
    // m_Offset = this.transform.position - player.transform.position;
}

then after Player moved,calculate frame(relative to physical system)

void FixedUpdate()
  {
      transform.position = player.transform.position + m_Offset;
  }