HelixJump/Assets/DarkMatter/Code/Presentation/Pool/ObjectPool.cs

using Darkmatter.Core;
using System.Collections.Generic;
using System.Runtime.InteropServices.WindowsRuntime;
using UnityEngine;
using VContainer;
using VContainer.Unity;

namespace Darkmatter.Presentation
{
    public class ObjectPool<T> : MonoBehaviour,IPool<T> where T : MonoBehaviour, IPoolable
    {
        [SerializeField] T prefab;
        [SerializeField] private Transform prefabParent;
        [SerializeField] private int poolSize = 15;

        public Queue<T> pool = new Queue<T>();
        [Inject] IObjectResolver resolver;

        public IReadOnlyCollection<T> All => pool;

        private void Awake()
        {
            CreateObjectPool();
        }

        private void CreateObjectPool()
        {
            for(int i=0;i<poolSize; i++)
            {
                T obj = Instantiate(prefab, prefabParent);
                resolver.InjectGameObject(obj.gameObject);
                obj.OnSpawn();
                obj.gameObject.SetActive(false);
                pool.Enqueue(obj);
            }
        }

        public T GetFromPool()
        {
            if(pool.Count == 0)
            {
                T obj = Instantiate(prefab, prefabParent);
                resolver.InjectGameObject(obj.gameObject);
                obj.OnSpawn();
                obj.gameObject.SetActive(true);
                pool.Enqueue(obj);
                return obj;
            }
            T returningObj = pool.Dequeue();
            return returningObj;
        }

        public void ReturnToPool(T obj)
        {
            obj.OnDespawn();
            obj.gameObject.SetActive(false);
            pool.Enqueue(obj);
        }
    }
}