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

public class GameSystem : MonoBehaviour
{
    public static GameSystem Instance { get; private set; }
    public List<IGameComponent> gameComponents { get; private set; } = new List<IGameComponent>();

    public void AddGameComponent(IGameComponent component)
    {
        if(!gameComponents.Contains(component))
            gameComponents.Add(component);
    }

    void Awake()
    {
        Instance = this;
    }

    void Start()
    {
        GameSystem[] gameSystems = FindObjectsOfType<GameSystem>();
        if(gameSystems.Length > 1)
        {
            Destroy(this.gameObject);
            return;
        }

        DontDestroyOnLoad(this);
    }

    void Update()
    {
        for(int i = 0; i < gameComponents.Count; i++)
            gameComponents[i].OnUpdate();
    }

    void FixedUpdate()
    {
        for(int i = 0; i < gameComponents.Count; i++)
            gameComponents[i].OnFixedUpdate();
    }

    void LateUpdate()
    {
        for(int i = 0; i < gameComponents.Count; i++)
            gameComponents[i].OnLateUpdate();
    }

    public void RemoveGameComponent(IGameComponent component)
    {
        if(gameComponents.Contains(component))
            gameComponents.Remove(component);
    }
}