Added Leaderboard.AttachRemoteFile

Facepunch.Steamworks/Client/Leaderboard.cs

@@ -161,6 +161,32 @@ public bool AddScore( bool onlyIfBeatsOldScore, int score, int[] subscores = nul
             return true;
         }
 
+        public delegate void AttachRemoteFileCallback( bool success );
+
+        public bool AttachRemoteFile( RemoteFile file, AttachRemoteFileCallback callback = null )
+        {
+            if ( file.IsShared )
+            {
+                client.native.userstats.AttachLeaderboardUGC( BoardId, file.UGCHandle, ( result, error ) =>
+                {
+                    callback?.Invoke( !error && result.Result == Result.OK );
+                } );
+                return true;
+            }
+
+            file.Share( success =>
+            {
+                if ( !success || !file.IsShared )
+                {
+                    callback?.Invoke( false );
+                    return;
+                }
+
+                AttachRemoteFile( file, callback );
+            } );
+            return true;
+        }
+
         /// <summary>
         ///     Fetch a subset of scores. The scores end up in Results.
         /// </summary>

Facepunch.Steamworks/Client/RemoteStorage.cs

@@ -113,6 +113,9 @@ public class RemoteFile
         private ulong _ownerId;
 
         public bool Exists { get; internal set; }
+        public bool IsShared { get { return _handle.Value != 0; } }
+
+        internal UGCHandle_t UGCHandle { get { return _handle; } }
 
         public string FileName
         {