using UnityEngine;

public class VRCameraIdleMotion : MonoBehaviour
{
    [Header("Position Settings")]
    public float positionAmplitude = 0.01f; // How far it moves (in meters)
    public float positionFrequency = 1.5f;  // How fast it moves

    [Header("Rotation Settings")]
    public float rotationAmplitude = 1.0f;  // Max degrees for tilt
    public float rotationFrequency = 1.2f;  // How fast it rotates

    private Vector3 initialPosition;
    private Quaternion initialRotation;
    private float timeOffset;

    void Start()
    {
        initialPosition = transform.localPosition;
        initialRotation = transform.localRotation;
        timeOffset = Random.Range(0f, 100f); // Each camera can feel slightly different
    }

    void Update()
    {
        float time = Time.time + timeOffset;

        // Subtle position drift (sinusoidal)
        float posOffsetY = Mathf.Sin(time * positionFrequency) * positionAmplitude;
        float posOffsetX = Mathf.Cos(time * positionFrequency * 0.7f) * positionAmplitude * 0.5f;
        float posOffsetZ = Mathf.Sin(time * positionFrequency * 0.5f) * positionAmplitude * 0.3f;

        transform.localPosition = initialPosition + new Vector3(posOffsetX, posOffsetY, posOffsetZ);

        // Subtle rotation drift (pitch & yaw mainly)
        float rotOffsetX = Mathf.Sin(time * rotationFrequency) * rotationAmplitude;  // pitch
        float rotOffsetY = Mathf.Cos(time * rotationFrequency * 1.2f) * rotationAmplitude; // yaw
        float rotOffsetZ = Mathf.Sin(time * rotationFrequency * 0.8f) * rotationAmplitude * 0.5f; // roll

        transform.localRotation = initialRotation * Quaternion.Euler(rotOffsetX, rotOffsetY, rotOffsetZ);
    }
}