60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
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/*
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Moonfall Copyright (C) 2008 Alex Yatskov
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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template <typename T, typename V>
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class Grid
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{
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public:
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Grid(int chunkDims = 256);
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bool Add(const T& data, const V& id, const Vector2i& position);
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bool Remove(const V& id);
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bool Update(const V& id, const Vector2i& position);
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bool Contains(const V& id) const;
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const T* Get(const V& id) const;
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T* Get(const V& id);
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void Query(std::vector<T>* data, const Rect4i& bounds) const;
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void Enumerate(std::vector<T>* data) const;
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void Clear();
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private:
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struct Entry;
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typedef qword ChunkKey;
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typedef dword ChunkKeyCoord;
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typedef std::map<V, boost::shared_ptr<Entry> > DataMap;
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typedef std::map<ChunkKey, DataMap> ChunkMap;
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ChunkKey PositionToKey(const Vector2i& position) const;
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struct Entry
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{
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Entry (const T& data, const Vector2i& position) :
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data(data), position(position) { }
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T data;
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Vector2i position;
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};
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ChunkMap m_chunks;
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DataMap m_data;
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int m_chunkDims;
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};
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#include "Grid.inl"
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