Engine directory for ticket #1

Engine/source/core/resourceManager.h

@@ -0,0 +1,91 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#ifndef _RESOURCEMANAGER_H_
+#define _RESOURCEMANAGER_H_
+
+#ifndef __RESOURCE_H__
+#include "core/resource.h"
+#endif
+
+#ifndef _TDICTIONARY_H_
+#include "core/util/tDictionary.h"
+#endif
+
+using namespace Torque;
+
+class ResourceManager
+{
+public:
+
+   static ResourceManager &get();
+
+   ResourceBase load(const Torque::Path &path);
+   ResourceBase find(const Torque::Path &path);
+
+   ResourceBase startResourceList( ResourceBase::Signature inSignature = U32_MAX );
+   ResourceBase nextResource();
+
+   void reloadResource( const Torque::Path &path, bool showMessage = false );
+
+   typedef Signal<void(const Torque::Path &path)> ChangedSignal;
+
+   /// Registering with this signal will give an opportunity to handle a change to the
+   /// resource on disk.  For example, if a PNG file is edited by the artist and saved
+   /// the ResourceManager will signal that the file has changed so the TextureManager
+   /// may act appropriately - which probably means to re-init the materials using that PNG.
+   /// The signal passes the Resource's signature so the callee may filter these.
+   ChangedSignal &getChangedSignal() { return mChangeSignal; }
+
+#ifdef TORQUE_DEBUG
+   void  dumpToConsole();
+#endif
+
+   ~ResourceManager();
+
+protected:
+
+   friend class ResourceBase::Header;
+
+   ResourceManager();
+
+   bool remove( ResourceBase::Header* header );
+
+   void  notifiedFileChanged( const Torque::Path &path );
+
+   typedef HashTable<String,ResourceBase::Header*> ResourceHeaderMap;
+
+   /// The map of resources.
+   ResourceHeaderMap mResourceHeaderMap;
+
+   /// The map of old resources which have been replaced by
+   /// new resources from a file change notification.
+   ResourceHeaderMap mPrevResourceHeaderMap;
+
+   ResourceHeaderMap::Iterator mIter;
+
+   U32 mIterSigFilter;
+
+   ChangedSignal mChangeSignal;
+};
+
+#endif