Hasebe/Assets/Code/OfficeGame/Location/PlayerLocationChecker.cs

using System;
using System.Linq;
using Code.Infrastructure.Camera;
using Code.OfficeGame.Player;
using Cysharp.Threading.Tasks;
using Reflex.Attributes;
using UnityEngine;

namespace Code.Game.OfficeGame.Location
{
    public class PlayerLocationChecker : MonoBehaviour
    {
        [Inject] private CameraStateMachine _cameraStateMachine;

        private LocationSegment _currentSegment;
        private LocationSegment _previousSegment;

        private async void OnTriggerEnter(Collider other)
        {
            try
            {
                if (!other.TryGetComponent(out LocationSegmentTrigger locationSegmentTrigger))
                    return;

                Debug.Log("Entered " + locationSegmentTrigger.segment.locationID);

                _previousSegment = _currentSegment;

                _currentSegment = locationSegmentTrigger.segment;

                if (_previousSegment == null || locationSegmentTrigger.segment == null) return;

                var point = locationSegmentTrigger.segment.transitionPoints
                    .SingleOrDefault(x => x.locationID == _previousSegment.locationID);

                if (point == null) return;

                _cameraStateMachine.SwitchState(CameraMode.LocationTransition).Forget();

                ((LocationTransitionState)_cameraStateMachine.CurrentBaseState).SetTarget(point.transform);

                await _cameraStateMachine.SwitchState(CameraMode.OpenMovement);
            }
            catch (Exception e)
            {
                Debug.LogException(e);
            }
        }
        
        private async void OnTriggerExit(Collider other)
        {
            try
            {
                if (!other.TryGetComponent(out LocationSegmentTrigger locationSegmentTrigger))
                    return;

                Debug.Log("Exited " + locationSegmentTrigger.segment.locationID);

                if (_currentSegment != locationSegmentTrigger.segment) return;

                (_previousSegment, _currentSegment) = (_currentSegment, _previousSegment);

                _currentSegment = locationSegmentTrigger.segment;

                if (_previousSegment == null || locationSegmentTrigger.segment == null) return;

                var point = locationSegmentTrigger.segment.transitionPoints
                    .SingleOrDefault(x => x.locationID == _previousSegment.locationID);

                if (point == null) return;

                _cameraStateMachine.SwitchState(CameraMode.LocationTransition).Forget();

                ((LocationTransitionState)_cameraStateMachine.CurrentBaseState).SetTarget(point.transform);

                await _cameraStateMachine.SwitchState(CameraMode.OpenMovement);
            }
            catch (Exception e)
            {
                Debug.LogException(e);
            }
        }
    }
}