urho3d.UrhoSharp/Bindings/Portable/Scene.cs

using System;
using System.Runtime.InteropServices;
using Urho.IO;
using Urho.Resources;

namespace Urho
{
	partial class Scene
	{
		[DllImport(Consts.NativeImport, CallingConvention = CallingConvention.Cdecl)]
		internal static extern bool Scene_LoadXMLFromCache(IntPtr handle, IntPtr cache, string file);

		public bool LoadXmlFromCache(ResourceCache cache, string file)
		{
			Runtime.ValidateRefCounted(this);
			return Scene_LoadXMLFromCache(handle, cache.Handle, file);
		}

		public bool LoadXml(string path)
		{
			Runtime.ValidateRefCounted(this);
			using (var file = new File(Context, path, FileMode.Read))
			{
				return LoadXml(file);
			}
		}

		public bool SaveXml(string path, string indentation = "\t")
		{
			Runtime.ValidateRefCounted(this);
			using (var file = new File(Context, path, FileMode.Write))
			{
				return SaveXml(file, indentation);
			}
		}

		unsafe partial void OnSceneCreated()
		{
			ComponentCloned += Scene_ComponentCloned;
		}

		void Scene_ComponentCloned(ComponentClonedEventArgs e)
		{
			if (e.CloneComponent.GetType() != e.Component.GetType())
			{
				// it means Component to clone is a managed subclass.
				// Let's wrap this Handle with that Managed class and re-register in the internal cache.
				var clonedManagedComponent = (Component)Activator.CreateInstance(e.Component.GetType(), e.CloneComponent.Handle);
				clonedManagedComponent.OnCloned(e.Scene, e.Component);
				Runtime.RegisterObject(clonedManagedComponent);
			}
		}
	}
}