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Question by curtisdh0 · Apr 11, 2021 at 04:38 PM · c#componentcomponentspoolinggeneric

Generic use of Components through typeof(Component) | Convert from Unity's generic Component into a desired one

Hey all, I'm having an issue figuring out how to convert a generic Component into my desired component class.


Essentially I've created a pooling system that takes in a Type and a Component. I'll add the relevant code below.


The issue I'm having is accessing the component once I've pulled it out of the pool.

 private Dictionary<Type, List<Component>> _pooledObjects = new Dictionary<Type, List<Component>>();
      public void PoolObject(Type componentType,Component component, bool add = true)
             {
                 if (add)
                 {
                     if (_pooledObjects.ContainsKey(componentType))
                     {
                         _pooledObjects[componentType].Add(component);
                         return;
                     }
                     _pooledObjects.Add(componentType,new List<Component>{component});
                     return;
                 }
                 _pooledObjects[componentType].Remove(component);
             }



Requesting from the Pool

       public Component RequestComponentFromPool(Type componentType)
         {
             if (_pooledObjects[componentType][0] != null)
             {
                 return _pooledObjects[componentType][0];
             }
             return null; // TODO 
         }

In this case, I'm wanting to reuse TextPopup's from the pool and adjust the text accordingly. I guess my question is how do I convert from Unity's generic Component into the desired one. While I could just access the GameObject from the returned component and use GetComponent I'm just sure there must be a way to access it without.

     public class Utility : MonoBehaviour
     {
         public static void GenerateWorldText(string text,GameObject obj, float speed,float duration)
         {
             var textobj = Managers.PoolManager.
                 PoolManager.Instance.RequestComponentFromPool(typeof(TextPopup));
 
         }
     }










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Answer by Hellium · Apr 11, 2021 at 05:38 PM

 private Dictionary<Type, List<Component>> _pooledObjects = new Dictionary<Type, List<Component>>();
 public void PoolObject<T>(T component, bool add = true)
     where T : Component
 {
     Type componentType = typeof(T);

     if (!_pooledObjects.ContainsKey(componentType))
     {
         _pooledObjects.Add(componentType, new List<Component>());
     }

     if(add)
     {
         _pooledObjects[componentType].Add(component);
     }
     else
     {
         _pooledObjects[componentType].Remove(component);
     }
 }

 public T RequestComponentFromPool<T>()
     where T : Component
 {
     Type componentType = typeof(T);
     if (_pooledObjects.ContainsKey(componentType) && _pooledObjects[componentType].Count > 0)
     {
         return _pooledObjects[componentType][0] as T;
     }
     return null;
 }


 PoolObject(GetComponent<Collider>());
 Collider collider = RequestComponentFromPool<Collider>();
 Debug.Log(collider);
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avatar image curtisdh0 · Apr 12, 2021 at 01:05 PM 0
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Thanks so much!

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