minetestmapper/include/BlockDecoder.h

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#pragma once
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#include <cstdint>
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#include <unordered_map>
#include "types.h"
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#include <ZstdDecompressor.h>
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class BlockDecoder {
public:
BlockDecoder();
void reset();
void decode(const ustring &data);
bool isEmpty() const;
// returns "" for air, ignore and invalid nodes
const std::string &getNode(u8 x, u8 y, u8 z) const;
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private:
typedef std::unordered_map<uint16_t, std::string> NameMap;
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NameMap m_nameMap;
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uint16_t m_blockAirId, m_blockIgnoreId;
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u8 m_version, m_contentWidth;
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ustring m_mapData;
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// one instance for performance
ZstdDecompressor m_zstd_decompressor;
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};