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resourcereference.h

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00001 /* ResidualVM - A 3D game interpreter
00002  *
00003  * ResidualVM is the legal property of its developers, whose names
00004  * are too numerous to list here. Please refer to the AUTHORS
00005  * file distributed with this source distribution.
00006  *
00007  * This program is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU General Public License
00009  * as published by the Free Software Foundation; either version 2
00010  * of the License, or (at your option) any later version.
00011  *
00012  * This program is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00020  *
00021  */
00022 
00023 #ifndef STARK_RESOURCES_RESOURCE_REFERENCE_H
00024 #define STARK_RESOURCES_RESOURCE_REFERENCE_H
00025 
00026 #include "common/array.h"
00027 #include "common/stream.h"
00028 
00029 #include "engines/stark/resources/object.h"
00030 
00031 namespace Stark {
00032 
00040 class ResourceReference {
00041 public:
00042     ResourceReference();
00043 
00044     Common::String describe() const;
00045 
00047     void loadFromStream(Common::ReadStream *stream);
00048 
00050     void saveToStream(Common::WriteStream *stream);
00051 
00053     void buildFromResource(Resources::Object *resource);
00054 
00056     template <class T>
00057     T* resolve() const;
00058 
00060     bool empty() const;
00061 
00063     bool canResolve() const;
00064 private:
00065     void addPathElement(Resources::Type type, uint16 index);
00066     Resources::Object *resolve() const;
00067 
00068     class PathElement {
00069     public:
00070         PathElement(Resources::Type type, uint16 index);
00071         Common::String describe() const;
00072 
00073         Resources::Type getType() const { return _type; }
00074         uint16 getIndex() const { return _index; }
00075 
00076     private:
00077         Resources::Type _type;
00078         uint16 _index;
00079     };
00080 
00081     Common::Array<PathElement> _path;
00082 };
00083 
00084 template<class T>
00085 T* ResourceReference::resolve() const {
00086     return Resources::Object::cast<T>(resolve());
00087 }
00088 
00089 } // End of namespace Stark
00090 
00091 #endif // STARK_RESOURCES_RESOURCE_REFERENCE_H


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