VRCycling/Assets/Scripts/ResetPlayerPosition/ResetPositionViaTransforms.cs

using UnityEngine;

namespace ResetPlayerPosition
{
    public class ResetPositionViaTransforms : MonoBehaviour
    {
        [Tooltip("Desired head position of player when seated")]
        public Transform desiredHeadPosition;
 
        //Assign these variables in the inspector, or find them some other way (eg. in Start() )
        public Transform steamCamera;
        public Transform cameraRig;

        private void Update()
        {
            if (Input.GetKeyDown(KeyCode.Space))
            {
                if (desiredHeadPosition != null)
                {
                    ResetSeatedPos(desiredHeadPosition);
                }
                else
                {
                    Debug.LogError("Target Transform required. Assign in inspector.", gameObject);
                }
            }
        }
 
        private void ResetSeatedPos(Transform desiredHeadPos)
        {
            if ((steamCamera != null) && (cameraRig != null))
            {
                //ROTATION
                // Get current head heading in scene (y-only, to avoid tilting the floor)
                float offsetAngle = steamCamera.rotation.eulerAngles.y;
                // Now rotate CameraRig in opposite direction to compensate
                cameraRig.Rotate(0f, -offsetAngle, 0f);
 
                //POSITION
                // Calculate postional offset between CameraRig and Camera
                Vector3 offsetPos = steamCamera.position - cameraRig.position;
                // Reposition CameraRig to desired position minus offset
                cameraRig.position = (desiredHeadPos.position - offsetPos);
 
                Debug.Log("Seat recentered!");
            }
            else
            {
                Debug.Log("Error: SteamVR objects not found!");
            }
        }
    }
}