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#pragma once
#include "Globals.h"
#include <QString>
#include <QMutex>
#include "QtChunk.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. */
cBiomeGenPtr 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);
};
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