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78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/*
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* MapViewCache.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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#include "../../lib/Point.h"
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VCMI_LIB_NAMESPACE_BEGIN
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class ObjectInstanceID;
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VCMI_LIB_NAMESPACE_END
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class IImage;
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class CAnimation;
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class Canvas;
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class MapRenderer;
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class IMapRendererContext;
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class MapViewModel;
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/// Class responsible for rendering of entire map view
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/// uses rendering parameters provided by owner class
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class MapViewCache
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{
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struct TileChecksum
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{
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int tileX = std::numeric_limits<int>::min();
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int tileY = std::numeric_limits<int>::min();
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std::array<uint8_t, 8> checksum{};
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bool operator==(const TileChecksum & other) const
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{
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return tileX == other.tileX && tileY == other.tileY && checksum == other.checksum;
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}
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};
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boost::multi_array<TileChecksum, 2> terrainChecksum;
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boost::multi_array<bool, 2> tilesUpToDate;
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Point cachedPosition;
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int cachedLevel;
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std::shared_ptr<MapViewModel> model;
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std::unique_ptr<Canvas> terrain;
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std::unique_ptr<Canvas> terrainTransition;
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std::unique_ptr<Canvas> intermediate;
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std::unique_ptr<MapRenderer> mapRenderer;
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std::unique_ptr<CAnimation> iconsStorage;
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Canvas getTile(const int3 & coordinates);
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void updateTile(const std::shared_ptr<IMapRendererContext> & context, const int3 & coordinates);
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std::shared_ptr<IImage> getOverlayImageForTile(const std::shared_ptr<IMapRendererContext> & context, const int3 & coordinates);
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public:
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explicit MapViewCache(const std::shared_ptr<MapViewModel> & model);
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~MapViewCache();
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/// invalidates cache of specified object
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void invalidate(const std::shared_ptr<IMapRendererContext> & context, const ObjectInstanceID & object);
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/// updates internal terrain cache according to provided time delta
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void update(const std::shared_ptr<IMapRendererContext> & context);
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/// renders updated terrain cache onto provided canvas
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void render(const std::shared_ptr<IMapRendererContext> & context, Canvas & target, bool fullRedraw);
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/// creates snapshot of current view and stores it into internal canvas
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/// used for view transition, e.g. Dimension Door spell or teleporters (Subterra gates / Monolith)
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void createTransitionSnapshot(const std::shared_ptr<IMapRendererContext> & context);
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};
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