1 files changed, 107 insertions, 0 deletions

diff --git a/Tools/QtBiomeVisualiser/ChunkSource.h b/Tools/QtBiomeVisualiser/ChunkSource.h
new file mode 100644
index 000000000..05e8ac5de
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/ChunkSource.h
@@ -0,0 +1,107 @@
+#pragma once
+#include "Globals.h"
+#include <QString>
+#include <QMutex>
+#include "Chunk.h"
+
+
+
+
+
+// fwd:
+class cBiomeGen;
+typedef std::shared_ptr<cBiomeGen> cBiomeGenPtr;
+class cIniFile;
+typedef std::shared_ptr<cIniFile> cIniFilePtr;
+
+
+
+
+
+/** Abstract interface for getting biome data for chunks. */
+class ChunkSource
+{
+public:
+	virtual ~ChunkSource() {}
+
+	/** Fills the a_DestChunk with the biomes for the specified coords.
+	It is expected to be thread-safe and re-entrant. Usually QThread::idealThreadCount() threads are used. */
+	virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) = 0;
+
+	/** Forces a fresh reload of the source. Useful mainly for the generator, whose underlying definition file may have been changed. */
+	virtual void reload() = 0;
+};
+
+
+
+
+
+
+class BioGenSource :
+	public ChunkSource
+{
+public:
+	/** Constructs a new BioGenSource based on the biome generator that is defined in the specified world.ini file. */
+	BioGenSource(cIniFilePtr a_IniFile);
+
+	// ChunkSource overrides:
+	virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) override;
+	virtual void reload(void) override;
+
+protected:
+	/** The world.ini contents from which the generator is created and re-created on reload(). */
+	cIniFilePtr m_IniFile;
+
+	/** The generator used for generating biomes. */
+	std::unique_ptr<cBiomeGen> m_BiomeGen;
+
+	/** Guards m_BiomeGen against multithreaded access. */
+	QMutex m_Mtx;
+};
+
+
+
+
+class AnvilSource :
+	public ChunkSource
+{
+public:
+	/** Constructs a new AnvilSource based on the world path. */
+	AnvilSource(QString a_WorldRegionFolder);
+
+	// ChunkSource overrides:
+	virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) override;
+	virtual void reload() override;
+
+protected:
+	class AnvilFile;
+	typedef std::shared_ptr<AnvilFile> AnvilFilePtr;
+
+
+	/** Folder where the individual Anvil Region files are located. */
+	QString m_WorldRegionFolder;
+
+	/** List of currently loaded files. Acts as a cache so that a file is not opened and closed over and over again.
+	Protected against multithreaded access by m_Mtx. */
+	std::list<AnvilFilePtr> m_Files;
+
+	/** Guards m_Files agains multithreaded access. */
+	QMutex m_Mtx;
+
+
+	/** Converts chunk coords to region coords. */
+	void chunkToRegion(int a_ChunkX, int a_ChunkZ, int & a_RegionX, int & a_RegionZ);
+
+	/** Returns the compressed data of the specified chunk.
+	Returns an empty string if the chunk is not available. */
+	AString getCompressedChunkData(int a_ChunkX, int a_ChunkZ);
+
+	/** Returns the file object that contains the specified chunk.
+	The file is taken from the cache if available there, otherwise it is created anew. */
+	AnvilFilePtr getAnvilFile(int a_ChunkX, int a_ChunkZ);
+
+};
+
+
+
+