mmorpg2d/Assets/Script/FarmingManager.cs

using System.Collections;
using System.Collections.Generic;
using Mirror;
using UnityEngine;

public class FarmingManager : NetworkBehaviour
{
    public static FarmingManager instance;
    void Awake(){
        instance = this;
    }
    
    void Start()
    {
        if(!isServer){
            Destroy(this);
        }

        farmingItems = new List<FarmingPositionEntry>();

        foreach(FarmingSpawnPoints point in farmingPoints){
            for(int i=0; i < point.pointsParent.childCount; i++){
                farmingItems.Add(new FarmingPositionEntry(){prefab = point.prefab, spawnLocation = point.pointsParent.GetChild(i)});
            }
        }

        for(int i = 0; i<farmingItems.Count; i++ ){
            farmingItems[i].destroyedTime = -timeToReSpawn;
        }
    }

    public float timeToReSpawn = 180f;
    
    public List<FarmingSpawnPoints> farmingPoints;
    public List<FarmingPositionEntry> farmingItems;
    
    void Update()
    {
        for(int i = 0; i<farmingItems.Count; i++ ){
            FarmingPositionEntry farmingItem = farmingItems[i];
            if(farmingItem.spawnedItem == null ){
                if(Time.time - farmingItem.destroyedTime > timeToReSpawn ){
                    Spawn(i);
                }
            }
        }
    }

    public void Spawn(int index){
        FarmingPositionEntry item = farmingItems[index];
        GameObject spawn = Instantiate(item.prefab , item.spawnLocation.position , Quaternion.identity);
        farmingItems[index].spawnedItem = spawn;
        NetworkServer.Spawn(spawn, NetworkConnectionToServer.LocalConnectionId);
    }

    public void DestroyItem(GameObject item){
        int targetIndex =0;
        for(int i=0; i < farmingItems.Count; i++){
            if(farmingItems[i].spawnedItem == item){
                targetIndex = i;
                break;
            }
        }

        farmingItems[targetIndex].destroyedTime = Time.time;
        farmingItems[targetIndex].spawnedItem = null;
        
        NetworkServer.Destroy(item);
    }

    public void DestroyItemByID(uint itemNetId){
        Debug.Log("Destroying farming item " + itemNetId);
        int targetIndex = 0;
        for(int i =0; i < farmingItems.Count; i++){
            if(farmingItems[i].spawnedItem == null){continue;}
            if(farmingItems[i].spawnedItem.GetComponent<NetworkIdentity>().netId == itemNetId){
                targetIndex =i;
                farmingItems[i].spawnedItem.GetComponent<FarmItem>().DestroySelf();
                break;
            }
        }

        farmingItems[targetIndex].destroyedTime = Time.time;
        farmingItems[targetIndex].spawnedItem = null;
    }

}

[System.Serializable]
public class FarmingPositionEntry{
    public Transform spawnLocation;
    public GameObject prefab;
    public GameObject spawnedItem;
    public float destroyedTime;

}


[System.Serializable]
public class FarmingSpawnPoints{
    public Transform pointsParent;
    public GameObject prefab;
}