Preload sequences and fix #5382

OpenRA.Game/FileSystem/GlobalFileSystem.cs

@@ -168,18 +168,27 @@ namespace OpenRA.FileSystem
 		public static Stream Open(string filename) { return OpenWithExts(filename, ""); }
 
 		public static Stream OpenWithExts(string filename, params string[] exts)
+		{
+			Stream s;
+			if (!TryOpenWithExts(filename, exts, out s))
+				throw new FileNotFoundException("File not found: {0}".F(filename), filename);
+
+			return s;
+		}
+
+		public static bool TryOpenWithExts(string filename, string[] exts, out Stream s)
 		{
 			if (filename.IndexOfAny(new char[] { '/', '\\' }) == -1)
 			{
 				foreach (var ext in exts)
 				{
-					var s = GetFromCache(PackageHashType.Classic, filename + ext);
+					s = GetFromCache(PackageHashType.Classic, filename + ext);
 					if (s != null)
-						return s;
+						return true;
 
 					s = GetFromCache(PackageHashType.CRC32, filename + ext);
 					if (s != null)
-						return s;
+						return true;
 				}
 			}
 
@@ -191,10 +200,14 @@ namespace OpenRA.FileSystem
 					.FirstOrDefault();
 
 				if (folder != null)
-					return folder.GetContent(filename + ext);
+				{
+					s = folder.GetContent(filename + ext);
+					return true;
+				}
 			}
 
-			throw new FileNotFoundException("File not found: {0}".F(filename), filename);
+			s = null;
+			return false;
 		}
 
 		public static bool Exists(string filename) { return MountedFolders.Any(f => f.Exists(filename)); }

OpenRA.Game/Graphics/SequenceProvider.cs

@@ -58,6 +58,21 @@ namespace OpenRA.Graphics
 
 			return unitSeq.Value.Keys;
 		}
+
+		public void Preload()
+		{
+			foreach (var unitSeq in sequences.Value.Values)
+			{
+				try
+				{
+					foreach (var seq in unitSeq.Value.Values);
+				}
+				catch (FileNotFoundException ex)
+				{
+					Log.Write("debug", ex.Message);
+				}
+			}
+		}
 	}
 
 	public class SequenceCache
@@ -101,7 +116,10 @@ namespace OpenRA.Graphics
 				{
 					t = Exts.Lazy(() => (IReadOnlyDictionary<string, Sequence>)new ReadOnlyDictionary<string, Sequence>(
 						node.Value.NodesDict.ToDictionary(x => x.Key, x =>
-							new Sequence(spriteLoader.Value, node.Key, x.Key, x.Value))));
+						{
+							using (new Support.PerfTimer("new Sequence(\"{0}\")".F(node.Key), 20))
+								return new Sequence(spriteLoader.Value, node.Key, x.Key, x.Value);
+						})));
 					sequenceCache.Add(key, t);
 					items.Add(node.Key, t);
 				}

OpenRA.Game/ModData.cs

@@ -134,8 +134,10 @@ namespace OpenRA
 			// Mount map package so custom assets can be used. TODO: check priority.
 			GlobalFileSystem.Mount(GlobalFileSystem.OpenPackage(map.Path, null, int.MaxValue));
 
-			using (new Support.PerfTimer("Map.LoadRules"))
+			using (new Support.PerfTimer("Map.PreloadRules"))
 				map.PreloadRules();
+			using (new Support.PerfTimer("Map.SequenceProvider.Preload"))
+				map.SequenceProvider.Preload();
 
 			VoxelProvider.Initialize(Manifest.VoxelSequences, map.VoxelSequenceDefinitions);