OldBlueWater/BlueWater/Assets/02.Scripts/Item/ItemController.cs

using System;
using System.Collections;
using Sirenix.OdinInspector;
using UnityEngine;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public class ItemController : MonoBehaviour
    {
        [Title("아이템")]
        [SerializeField] private Item item;
        [SerializeField] private GameObject itemUiPrefab;
        [SerializeField] private GameObject pointingArrowUiPrefab;
        [ShowIf("@pointingArrowUiPrefab")]
        [SerializeField] private float arrowOffset = 10f;
        
        [Title("자동 파괴")]
        [SerializeField] private bool useAutoDestroy = true;
        [ShowIf("@useAutoDestroy")]
        [SerializeField] private float autoDestroyTime = 30f;

        [Title("획득")]
        [SerializeField] private bool drawGizmos = true;
        [SerializeField] private float radius = 5f;
        [SerializeField] private float acquisitionTime = 1f;
        [SerializeField] private LayerMask targetLayer;

        private Collider[] hitColliders = new Collider[1];
        private Collider targetCollider;
        private WaitForSeconds lootCoroutineTime = new(0.5f);
        private AudioSource audioSource;
        private ItemUiController itemLootUi;
        private Transform pointingArrowUi;

        private void OnDrawGizmosSelected()
        {
            if (!drawGizmos) return;
            
            Gizmos.DrawWireSphere(transform.position, radius);
        }

        public void Init(Item newItem)
        {
            item = newItem;

            var myPos = transform.position;
            var screenPos = CameraManager.Inst.MainCam.WorldToScreenPoint(myPos);
            itemLootUi = Instantiate(itemUiPrefab, screenPos, Quaternion.identity, UiManager.Inst.OceanUi.ItemsLoot).GetComponent<ItemUiController>();
            if (pointingArrowUiPrefab)
            {
                pointingArrowUi = Instantiate(pointingArrowUiPrefab, screenPos, Quaternion.identity, UiManager.Inst.OceanUi.InstantiateUi).transform;
                pointingArrowUi.gameObject.SetActive(false);
            }
            itemLootUi.Init(transform);
        }

        private void Awake()
        {
            audioSource = transform.parent.Find("Audio").GetComponent<AudioSource>();
        }
        
        private void Start()
        {
            if (useAutoDestroy)
            {
                Destroy(transform.parent.gameObject, autoDestroyTime);
                Destroy(itemLootUi.gameObject, autoDestroyTime);
            }

            StartCoroutine(LootCoroutine());
        }

        private void LateUpdate()
        {
            PointingArrowUi();
        }

        private IEnumerator LootCoroutine()
        {
            while (true)
            {
                var maxSize = Physics.OverlapSphereNonAlloc(transform.position, radius, hitColliders, targetLayer);
                if (maxSize > 0)
                {
                    targetCollider = hitColliders[0];
                    itemLootUi.ItemAcquisition();
                    break;
                }
                
                yield return lootCoroutineTime;
            }
            
            var startPosition = transform.position;
            var elapsedTime = 0f;
            
            while (elapsedTime < acquisitionTime)
            {
                elapsedTime += Time.deltaTime;
                var t = elapsedTime / acquisitionTime;
                t = Mathf.SmoothStep(0f, 1f, t);

                transform.position = Vector3.Lerp(startPosition, targetCollider.transform.position, t);
                yield return null;
            }

            item.Acquire();
            itemLootUi.gameObject.SetActive(false);
            UiManager.Inst.OceanUi.DropItemGroupController.ShowDropItemInfoUi(item);
            
            if (audioSource && audioSource.resource)
            {
                audioSource.Play();
            }

            yield return new WaitForSeconds(audioSource.clip.length);
            
            Destroy(transform.parent.gameObject);
            Destroy(itemLootUi.gameObject);
        }

        private void PointingArrowUi()
        {
            if (!itemLootUi || !pointingArrowUi) return;
            
            var planes = GeometryUtility.CalculateFrustumPlanes(CameraManager.Inst.MainCam);
            var centerPosition = GameManager.Inst.ShipPlayer.transform.position;
            var direction = transform.position - centerPosition;
            var ray = new Ray(centerPosition, direction);
            var rayMinDistance = Mathf.Infinity;
            for (var i = 0; i < 4; i++)
            {
                if (planes[i].Raycast(ray, out var distance) && distance < rayMinDistance)
                {
                    rayMinDistance = distance;
                }
            }
            rayMinDistance = Mathf.Clamp(rayMinDistance, 0f, direction.magnitude);
            pointingArrowUi.gameObject.SetActive(direction.magnitude > rayMinDistance);

            var angle = Mathf.Atan2(direction.normalized.z, direction.normalized.x) * Mathf.Rad2Deg;
            pointingArrowUi.transform.rotation = Quaternion.Euler(0, 0, angle + 90f);

            var screenPosition = CameraManager.Inst.MainCam.WorldToScreenPoint(ray.GetPoint(rayMinDistance));
            
            screenPosition.x = Mathf.Clamp(screenPosition.x, arrowOffset, Screen.width - arrowOffset);
            screenPosition.y = Mathf.Clamp(screenPosition.y, arrowOffset, Screen.height - arrowOffset);
    
            pointingArrowUi.transform.position = screenPosition;
        }
    }
}