Does this code destroy the GameObject: Memory isn't Decreasing

Hello

I am attempting to delete a GameObject that is just a Plane with a texture on it. I am deleting it because I want to free up the memory its using (the texture requires alot of memory). But I dont think that the Plane is being destroyed - certainly I am not seeing any stabilisation or reduction in my games memory usage. I think it might be because I still have a reference to the Plane somewhere and C# isn't releasing the memory.

Do you think my code is successfully releasing all the memory? Can you suggest what I can do to ensure that the GameObject is destroyed?

Code (csharp):

1.  
2. public class TerrainManager : MonoBehaviour
3. {
4.     protected Dictionary<LatLonCoordinate, TerrainManagerNs.Plane> planes   = new Dictionary<LatLonCoordinate, TerrainManagerNs.Plane>();
5.  
6.     protected void clearTerrain() {
7.         StopAllCoroutines();
8.        
9.         foreach (TerrainManagerNs.Plane plane in planes.Values) {
10.             Debugger.print ("Deleting plane");
11.             Destroy(plane);
12.         }
13.        
14.         // Knowtice that the dictionary planes still refers to each Plane at this point in code
15.         // So did the destroy above work even though planes still referred to the planes?
16.         planes.Clear ();
17.         //System.GC.Collect();
18.     }
19. }
20.  
21. public class Plane : MonoBehaviour
22. {
23.     void OnDestroy() {
24.         Debugger.print ("Plane");
25.         destroy ();
26.     }
27.    
28.     private virtual void destroy() {
29.         StopAllCoroutines();
30.         Debug.Log ("Plane::Destroy()");
31.         Destroy(this.gameObject.rigidbody);
32.         Destroy(this.gameObject.collider);
33.         Destroy(this.gameObject);
34.         Destroy(this);
35.     }
36. }

 

I'm not quite sure what is going on here, but have a look at this question on Unity Answers about Garbage Collection, also be sure that you understand how garbage collection in mono works as manually collecting the garbage is usually a bad idea, and just like in your own home it's best to let someone else take care of it.

 

Destroy does destroy objects, but Unity objects are not part of Mono and are not garbage collected. You can use Resources.UnloadUnusedAssets.

--Eric