Move source files into folder

src/BlockDecoder.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <cstdint>
+#include <unordered_map>
+#include "types.h"
+#include <ZstdDecompressor.h>
+
+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;
+
+private:
+	typedef std::unordered_map<uint16_t, std::string> NameMap;
+	NameMap m_nameMap;
+	uint16_t m_blockAirId, m_blockIgnoreId;
+
+	u8 m_version, m_contentWidth;
+	ustring m_mapData;
+
+	// one instance for performance
+	ZstdDecompressor m_zstd_decompressor;
+};