Asset bundle building

gistfile1.cs

	public static void Build( string strPath, BuildTarget target )
	{
		if ( !System.IO.Directory.Exists( strPath ) )
			System.IO.Directory.CreateDirectory( strPath );

		AssetBundleBuild[] existingBundles = AssetDatabase.GetAllAssetBundleNames().Select( x => new AssetBundleBuild() { assetBundleName = x, assetBundleVariant = "", assetNames = AssetDatabase.GetAssetPathsFromAssetBundle( x ) } ).ToArray();

		EditorUtility.DisplayProgressBar( "SplitContent", "", 0 );
		var newBundles = SplitContent( existingBundles );

		BuildPipeline.BuildAssetBundles( strPath, newBundles, BuildAssetBundleOptions.UncompressedAssetBundle | BuildAssetBundleOptions.DeterministicAssetBundle, target );

		EditorUtility.ClearProgressBar();
	}


	static AssetBundleBuild[] SplitContent( AssetBundleBuild[] existingBundles )
	{
		EditorUtility.DisplayProgressBar( "SplitContent", "Get Explicitly Included Content", 0 );
		var explicitlyIncluded = existingBundles.SelectMany( x => x.assetNames ).ToArray();

		EditorUtility.DisplayProgressBar( "SplitContent", "Find All Included Files", 0 );
		var allIncludes = explicitlyIncluded.SelectMany( x =>
			{
				if ( System.IO.Directory.Exists( x ) )
				{
					return AssetDatabase.FindAssets( "", new[] { x } ).Select( y => AssetDatabase.GUIDToAssetPath( y ) );
				}
				else
				{
					return new[] { x };
				}
			} ).Distinct().ToArray();


		EditorUtility.DisplayProgressBar( "SplitContent", "GetDependencies", 0 );
		var allDependancies = AssetDatabase.GetDependencies( allIncludes ) // Get all dependencies
												.Where( x => !allIncludes.Contains( x ) ) // that aren't included explicitly
												.Distinct();


		var extraIncludes = new List<AssetBundleBuild>();


		EditorUtility.DisplayProgressBar( "SplitContent", "Textures", 0 );
		{
			var allContent = allDependancies.Where( x => { return		x.EndsWith( ".tga", System.StringComparison.CurrentCultureIgnoreCase ) || 
																		x.EndsWith( ".tif", System.StringComparison.CurrentCultureIgnoreCase ) ||
																		x.EndsWith( ".png", System.StringComparison.CurrentCultureIgnoreCase ) ||
																		x.EndsWith( ".jpg", System.StringComparison.CurrentCultureIgnoreCase ) ||
																		x.EndsWith( ".psd", System.StringComparison.CurrentCultureIgnoreCase )
																		; } );

			foreach ( var group in allContent.GroupBy( x => Mathf.Abs( x.GetHashCode() % 128 ) ) )
			{
				extraIncludes.Add( new AssetBundleBuild() { assetNames = group.ToArray(), assetBundleVariant = "", assetBundleName = "content/textures/" + group.Key.ToString( "000" ) + ".content" } );
			}
		}

		EditorUtility.DisplayProgressBar( "SplitContent", "Audio", 0 );
		{
			var allContent = allDependancies.Where( x => { return		x.EndsWith( ".wav", System.StringComparison.CurrentCultureIgnoreCase ) || 
																		x.EndsWith( ".mp3", System.StringComparison.CurrentCultureIgnoreCase ) ||
																		x.EndsWith( ".ogg", System.StringComparison.CurrentCultureIgnoreCase )
																		; } );

			foreach ( var group in allContent.GroupBy( x => Mathf.Abs( x.GetHashCode() % 128 ) ) )
			{
				extraIncludes.Add( new AssetBundleBuild() { assetNames = group.ToArray(), assetBundleVariant = "", assetBundleName = "content/audio/" + group.Key.ToString( "000" ) + ".content" } );
			}
		}

		extraIncludes.AddRange( existingBundles );

		return extraIncludes.ToArray();
	}