using Cinemachine;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace UnityCommon
{
    public class CinemachineState : CameraState
    {
        public CinemachineState(Camera camera) : base(camera)
        {
        }
        CinemachineBrain cinemachineBrain;
        CinemachineVirtualCamera virtualCamera;
        private float fov = 40;
        public override void Enter()
        {
            base.Enter();
            m_camera.enabled = true;
            cinemachineBrain = m_camera.gameObject.AddComponentOnlyOne<CinemachineBrain>();

            Utility.DelayExe(2, () =>
            {
                virtualCamera = cinemachineBrain.ActiveVirtualCamera.VirtualCameraGameObject.GetComponent<CinemachineVirtualCamera>();
                fov = virtualCamera.m_Lens.FieldOfView;
            });
        }
        public override void Exit()
        {
            base.Exit();
            if (virtualCamera != null)
                virtualCamera.m_Lens.FieldOfView = fov;
            cinemachineBrain.enabled = false;
            GameObject.Destroy(cinemachineBrain);
            cinemachineBrain = null;
        }
        public override void OnZoom(float zoom)
        {
            base.OnZoom(zoom);
            //Debug.Log(cinemachineBrain);
            if (virtualCamera)
            {
                virtualCamera.m_Lens.FieldOfView = Mathf.Clamp(virtualCamera.m_Lens.FieldOfView + (zoom * -10), 40, 70);
            }
        }
    }
}