GEEKING

App/include/voxel/ChunkMap.h

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+#pragma once
+
+#include "Util/SpatialRegion.h"
+
+#include <vector>
+#include <boost/unordered_map.hpp>
+
+namespace RBX { namespace Voxel {
+
+// Associative container for mapping SpatialRegion::Id to a value type.
+// ValueType should implement no-arg constructor and assignment operator.
+template<class ValueType>
+class ChunkMap {
+	typedef boost::unordered_map<SpatialRegion::Id, ValueType, SpatialRegion::Id::boost_compatible_hash_value> ValueMap;
+
+public:
+	ChunkMap();
+
+	// Mutating accessor, will insert a new ValueType if the id wasn't already
+	// contained in this container.
+	ValueType& insert(const SpatialRegion::Id& id);
+
+	// Constant accessor, returns NULL if id is not contained.
+	const ValueType* find(const SpatialRegion::Id& id) const;
+	ValueType* find(const SpatialRegion::Id& id);
+
+	// Removes the key/value pair for the given id. Does nothing if the key
+	// is not present.
+	void erase(const SpatialRegion::Id& id);
+
+    // Get all chunks
+    std::vector<SpatialRegion::Id> getChunks() const;
+
+    // Get number of chunks
+    size_t size() const;
+
+private:
+	ValueMap values;
+};
+
+} }
+
+#include "ChunkMap.inl"