FIFE  2008.0
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layercache.h
00001 /***************************************************************************
00002  *   Copyright (C) 2005-2008 by the FIFE team                              *
00003  *   http://www.fifengine.de                                               *
00004  *   This file is part of FIFE.                                            *
00005  *                                                                         *
00006  *   FIFE is free software; you can redistribute it and/or                 *
00007  *   modify it under the terms of the GNU Lesser General Public            *
00008  *   License as published by the Free Software Foundation; either          *
00009  *   version 2.1 of the License, or (at your option) any later version.    *
00010  *                                                                         *
00011  *   This library is distributed in the hope that it will be useful,       *
00012  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00013  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00014  *   Lesser General Public License for more details.                       *
00015  *                                                                         *
00016  *   You should have received a copy of the GNU Lesser General Public      *
00017  *   License along with this library; if not, write to the                 *
00018  *   Free Software Foundation, Inc.,                                       *
00019  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
00020  ***************************************************************************/
00021 
00022 #ifndef FIFE_VIEW_LAYERCACHE_H
00023 #define FIFE_VIEW_LAYERCACHE_H
00024 
00025 // Standard C++ library includes
00026 #include <string>
00027 #include <map>
00028 #include <set>
00029 
00030 // 3rd party library includes
00031 
00032 // FIFE includes
00033 // These includes are split up in two parts, separated by one empty line
00034 // First block: files included from the FIFE root src directory
00035 // Second block: files included from the same folder
00036 #include "model/structures/location.h"
00037 #include "util/math/matrix.h"
00038 #include "util/structures/rect.h"
00039 #include "util/structures/quadtree.h"
00040 #include "model/metamodel/grids/cellgrid.h"
00041 
00042 #include "rendererbase.h"
00043 
00044 namespace FIFE {
00045 
00046     class Camera;
00047     class CacheLayerChangeListener;
00048 
00049     class LayerCache {
00050     public:
00051         typedef QuadTree<std::set<int> > CacheTree;
00052 
00053         LayerCache(Camera* camera, ImagePool* image_pool, AnimationPool* animation_pool);
00054         ~LayerCache();
00055 
00056         void setLayer(Layer* layer);
00057         void update(Camera::Transform transform, RenderList& renderlist);
00058 
00059         void addInstance(Instance* instance);
00060         void removeInstance(Instance* instance);
00061 
00062         void updateInstance(Instance* instance);
00063 
00064 
00065     private:
00066         void collect(const Rect& viewport, std::vector<int>& indices);
00067         void reset();
00068         void fullUpdate();
00069 
00070         struct Entry {
00072             CacheTree::Node* node;
00073 
00075             unsigned instance_index;
00076 
00078             unsigned entry_index;
00080             bool force_update;
00081         };
00082 
00083         ImagePool* m_image_pool;
00084         AnimationPool* m_animation_pool;
00085         Camera* m_camera;
00086         Layer* m_layer;
00087         CacheLayerChangeListener* m_layer_observer;
00088 
00089         void updateEntry(Entry& item);
00090 
00091         std::map<Instance*,int> m_instance_map;
00092         std::vector<Entry> m_entries;
00093 
00094         CacheTree* m_tree;
00095         std::vector<RenderItem> m_instances;
00096     };
00097 
00098 }
00099 #endif