Northbound/Assets/Scripts/ResourcePickup.cs

using Unity.Netcode;
using UnityEngine;

namespace Northbound
{
    /// <summary>
    /// 일회용 자원 아이템 - 상호작용 시 자원 획득 후 사라짐
    /// </summary>
    public class ResourcePickup : NetworkBehaviour, IInteractable
    {
        [Header("Resource Settings")]
        public int resourceAmount = 50; // 획득할 자원량
        public string resourceName = "보급품";

        [Header("Animation")]
        public string interactionAnimationTrigger = "PickUp"; // 플레이어 애니메이션 트리거

        [Header("Equipment")]
        public EquipmentData equipmentData = new EquipmentData
        {
            socketName = "",
            equipmentPrefab = null,
            attachOnStart = false,
            detachOnEnd = false
        };

        [Header("Visual")]
        public GameObject pickupEffectPrefab;
        public Transform effectSpawnPoint;

        private bool _isCollected = false;

        public bool CanInteract(ulong playerId)
        {
            if (_isCollected)
                return false;

            var resourceManager = ServerResourceManager.Instance;
            if (resourceManager != null)
            {
                if (resourceManager.GetAvailableSpace(playerId) <= 0)
                    return false;
            }

            return true;
        }

        public void Interact(ulong playerId)
        {
            if (!CanInteract(playerId))
                return;

            CollectResourceServerRpc(playerId);
        }

        [Rpc(SendTo.Server, InvokePermission = RpcInvokePermission.Everyone)]
        private void CollectResourceServerRpc(ulong playerId)
        {
            if (!CanInteract(playerId))
                return;

            if (_isCollected)
                return;

            _isCollected = true;

            var resourceManager = ServerResourceManager.Instance;
            if (resourceManager == null)
            {
                Debug.LogWarning("ServerResourceManager 인스턴스를 찾을 수 없습니다.");
                _isCollected = false;
                return;
            }

            int playerAvailableSpace = resourceManager.GetAvailableSpace(playerId);
            int collectedAmount = Mathf.Min(resourceAmount, playerAvailableSpace);

            if (collectedAmount <= 0)
            {
                _isCollected = false;
                return;
            }

            resourceManager.AddResource(playerId, collectedAmount);
            UpdatePlayerResourcesClientRpc(playerId);

            ShowPickupEffectClientRpc();
            Invoke(nameof(DestroyPickup), 0.1f);
        }

        [Rpc(SendTo.Owner)]
        private void UpdatePlayerResourcesClientRpc(ulong playerId)
        {
            var playerObject = NetworkManager.Singleton.ConnectedClients[playerId]?.PlayerObject;
            if (playerObject == null)
                return;

            var playerInventory = playerObject.GetComponent<PlayerResourceInventory>();
            playerInventory?.RequestResourceUpdateServerRpc();
        }

        [Rpc(SendTo.ClientsAndHost)]
        private void ShowPickupEffectClientRpc()
        {
            if (pickupEffectPrefab != null)
            {
                Transform spawnPoint = effectSpawnPoint != null ? effectSpawnPoint : transform;
                GameObject effect = Instantiate(pickupEffectPrefab, spawnPoint.position, spawnPoint.rotation);
                Destroy(effect, 2f);
            }

            // 오브젝트를 즉시 비활성화하여 재상호작용 방지
            gameObject.SetActive(false);
        }

        private void DestroyPickup()
        {
            if (IsServer && NetworkObject != null)
            {
                NetworkObject.Despawn(true);
            }
        }

        public string GetInteractionPrompt()
        {
            return $"[E] {resourceName} Get (+{resourceAmount})";
        }

        public string GetInteractionAnimation()
        {
            return interactionAnimationTrigger;
        }

        public EquipmentData GetEquipmentData()
        {
            return equipmentData;
        }

        public Transform GetTransform()
        {
            return transform;
        }
    }
}