1 files changed, 421 insertions, 0 deletions
diff --git a/Tools/QtBiomeVisualiser/ChunkSource.cpp b/Tools/QtBiomeVisualiser/ChunkSource.cpp
new file mode 100644
index 000000000..bebf89a0a
--- /dev/null
+++ b/Tools/QtBiomeVisualiser/ChunkSource.cpp
@@ -0,0 +1,421 @@
+#include "Globals.h"
+#include "ChunkSource.h"
+#include <QThread>
+#include "src/Generating/BioGen.h"
+#include "src/StringCompression.h"
+#include "src/WorldStorage/FastNBT.h"
+#include "inifile/iniFile.h"
+
+
+
+
+
+/** Map for converting biome values to colors. Initialized from biomeColors[]. */
+static uchar biomeToColor[256 * 4];
+
+/** Map for converting biome values to colors. Used to initialize biomeToColor[].*/
+static struct
+{
+	EMCSBiome m_Biome;
+	uchar m_Color[3];
+} biomeColors[] =
+{
+	{ biOcean,                { 0x00, 0x00, 0x70 }, },
+	{ biPlains,               { 0x8d, 0xb3, 0x60 }, },
+	{ biDesert,               { 0xfa, 0x94, 0x18 }, },
+	{ biExtremeHills,         { 0x60, 0x60, 0x60 }, },
+	{ biForest,               { 0x05, 0x66, 0x21 }, },
+	{ biTaiga,                { 0x0b, 0x66, 0x59 }, },
+	{ biSwampland,            { 0x2f, 0xff, 0xda }, },
+	{ biRiver,                { 0x30, 0x30, 0xaf }, },
+	{ biHell,                 { 0x7f, 0x00, 0x00 }, },
+	{ biSky,                  { 0x00, 0x7f, 0xff }, },
+	{ biFrozenOcean,          { 0xa0, 0xa0, 0xdf }, },
+	{ biFrozenRiver,          { 0xa0, 0xa0, 0xff }, },
+	{ biIcePlains,            { 0xff, 0xff, 0xff }, },
+	{ biIceMountains,         { 0xa0, 0xa0, 0xa0 }, },
+	{ biMushroomIsland,       { 0xff, 0x00, 0xff }, },
+	{ biMushroomShore,        { 0xa0, 0x00, 0xff }, },
+	{ biBeach,                { 0xfa, 0xde, 0x55 }, },
+	{ biDesertHills,          { 0xd2, 0x5f, 0x12 }, },
+	{ biForestHills,          { 0x22, 0x55, 0x1c }, },
+	{ biTaigaHills,           { 0x16, 0x39, 0x33 }, },
+	{ biExtremeHillsEdge,     { 0x7f, 0x8f, 0x7f }, },
+	{ biJungle,               { 0x53, 0x7b, 0x09 }, },
+	{ biJungleHills,          { 0x2c, 0x42, 0x05 }, },
+
+	{ biJungleEdge,           { 0x62, 0x8b, 0x17 }, },
+	{ biDeepOcean,            { 0x00, 0x00, 0x30 },	},
+	{ biStoneBeach,           { 0xa2, 0xa2, 0x84 },	},
+	{ biColdBeach,            { 0xfa, 0xf0, 0xc0 },	},
+	{ biBirchForest,          { 0x30, 0x74, 0x44 },	},
+	{ biBirchForestHills,     { 0x1f, 0x5f, 0x32 },	},
+	{ biRoofedForest,         { 0x40, 0x51, 0x1a },	},
+	{ biColdTaiga,            { 0x31, 0x55, 0x4a },	},
+	{ biColdTaigaHills,       { 0x59, 0x7d, 0x72 },	},
+	{ biMegaTaiga,            { 0x59, 0x66, 0x51 },	},
+	{ biMegaTaigaHills,       { 0x59, 0x66, 0x59 },	},
+	{ biExtremeHillsPlus,     { 0x50, 0x70, 0x50 },	},
+	{ biSavanna,              { 0xbd, 0xb2, 0x5f },	},
+	{ biSavannaPlateau,       { 0xa7, 0x9d, 0x64 },	},
+	{ biMesa,                 { 0xd9, 0x45, 0x15 },	},
+	{ biMesaPlateauF,         { 0xb0, 0x97, 0x65 },	},
+	{ biMesaPlateau,          { 0xca, 0x8c, 0x65 },	},
+
+	// M variants:
+	{ biSunflowerPlains,      { 0xb5, 0xdb, 0x88 }, },
+	{ biDesertM,              { 0xff, 0xbc, 0x40 }, },
+	{ biExtremeHillsM,        { 0x88, 0x88, 0x88 }, },
+	{ biFlowerForest,         { 0x2d, 0x8e, 0x49 }, },
+	{ biTaigaM,               { 0x33, 0x8e, 0x81 }, },
+	{ biSwamplandM,           { 0x07, 0xf9, 0xb2 }, },
+	{ biIcePlainsSpikes,      { 0xb4, 0xdc, 0xdc }, },
+	{ biJungleM,              { 0x7b, 0xa3, 0x31 }, },
+	{ biJungleEdgeM,          { 0x62, 0x8b, 0x17 }, },
+	{ biBirchForestM,         { 0x58, 0x9c, 0x6c }, },
+	{ biBirchForestHillsM,    { 0x47, 0x87, 0x5a }, },
+	{ biRoofedForestM,        { 0x68, 0x79, 0x42 }, },
+	{ biColdTaigaM,           { 0x24, 0x3f, 0x36 }, },
+	{ biMegaSpruceTaiga,      { 0x45, 0x4f, 0x3e }, },
+	{ biMegaSpruceTaigaHills, { 0x45, 0x4f, 0x4e }, },
+	{ biExtremeHillsPlusM,    { 0x78, 0x98, 0x78 }, },
+	{ biSavannaM,             { 0xe5, 0xda, 0x87 }, },
+	{ biSavannaPlateauM,      { 0xa7, 0x9d, 0x74 }, },
+	{ biMesaBryce,            { 0xff, 0x6d, 0x3d }, },
+	{ biMesaPlateauFM,        { 0xd8, 0xbf, 0x8d }, },
+	{ biMesaPlateauM,         { 0xf2, 0xb4, 0x8d }, },
+} ;
+
+
+
+
+
+static class BiomeColorsInitializer
+{
+public:
+	BiomeColorsInitializer(void)
+	{
+		// Reset all colors to gray:
+		for (size_t i = 0; i < ARRAYCOUNT(biomeToColor); i++)
+		{
+			biomeToColor[i] = 0x7f;
+		}
+
+		// Set known biomes to their colors:
+		for (size_t i = 0; i < ARRAYCOUNT(biomeColors); i++)
+		{
+			uchar * color = &biomeToColor[4 * biomeColors[i].m_Biome];
+			color[0] = biomeColors[i].m_Color[2];
+			color[1] = biomeColors[i].m_Color[1];
+			color[2] = biomeColors[i].m_Color[0];
+			color[3] = 0xff;
+		}
+	}
+} biomeColorInitializer;
+
+
+
+
+
+/** Converts biomes in an array into the chunk image data. */
+static void biomesToImage(cChunkDef::BiomeMap & a_Biomes, Chunk::Image & a_Image)
+{
+	// Make sure the two arrays are of the same size, compile-time.
+	// Note that a_Image is actually 4 items per pixel, so the array is 4 times bigger:
+	static const char Check1[4 * ARRAYCOUNT(a_Biomes) - ARRAYCOUNT(a_Image)      + 1] = {};
+	static const char Check2[ARRAYCOUNT(a_Image)      - 4 * ARRAYCOUNT(a_Biomes) + 1] = {};
+
+	// Convert the biomes into color:
+	for (size_t i = 0; i < ARRAYCOUNT(a_Biomes); i++)
+	{
+		a_Image[4 * i + 0] = biomeToColor[4 * a_Biomes[i] + 0];
+		a_Image[4 * i + 1] = biomeToColor[4 * a_Biomes[i] + 1];
+		a_Image[4 * i + 2] = biomeToColor[4 * a_Biomes[i] + 2];
+		a_Image[4 * i + 3] = biomeToColor[4 * a_Biomes[i] + 3];
+	}
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// BioGenSource:
+
+BioGenSource::BioGenSource(cIniFilePtr a_IniFile) :
+	m_IniFile(a_IniFile),
+	m_Mtx(QMutex::Recursive)
+{
+	reload();
+}
+
+
+
+
+
+void BioGenSource::getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk)
+{
+	cChunkDef::BiomeMap biomes;
+	{
+		QMutexLocker lock(&m_Mtx);
+		m_BiomeGen->GenBiomes(a_ChunkX, a_ChunkZ, biomes);
+	}
+	Chunk::Image img;
+	biomesToImage(biomes, img);
+	a_DestChunk->setImage(img);
+}
+
+
+
+
+
+void BioGenSource::reload()
+{
+	int seed = m_IniFile->GetValueSetI("Generator", "Seed", 0);
+	bool unused = false;
+	QMutexLocker lock(&m_Mtx);
+	m_BiomeGen.reset(cBiomeGen::CreateBiomeGen(*m_IniFile, seed, unused));
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// AnvilSource::AnvilFile
+
+class AnvilSource::AnvilFile
+{
+public:
+	/** Coordinates of the region file. */
+	int m_RegionX, m_RegionZ;
+
+	/** True iff the file contains proper data. */
+	bool m_IsValid;
+
+
+
+	/** Creates a new instance with the specified region coords. Reads the file header. */
+	AnvilFile(int a_RegionX, int a_RegionZ, const AString & a_WorldPath) :
+		m_RegionX(a_RegionX),
+		m_RegionZ(a_RegionZ),
+		m_IsValid(false)
+	{
+		readFile(Printf("%s/r.%d.%d.mca", a_WorldPath.c_str(), a_RegionX, a_RegionZ));
+	}
+
+
+
+	/** Returns the compressed data of the specified chunk.
+	Returns an empty string when chunk not present. */
+	AString getChunkData(int a_ChunkX, int a_ChunkZ)
+	{
+		if (!m_IsValid)
+		{
+			return "";
+		}
+
+		// Translate to local coords:
+		int RelChunkX = a_ChunkX - m_RegionX * 32;
+		int RelChunkZ = a_ChunkZ - m_RegionZ * 32;
+		ASSERT((RelChunkX >= 0) && (RelChunkX < 32));
+		ASSERT((RelChunkZ >= 0) && (RelChunkZ < 32));
+
+		// Get the chunk data location:
+		UInt32 chunkOffset = m_Header[RelChunkX + 32 * RelChunkZ] >> 8;
+		UInt32 numChunkSectors = m_Header[RelChunkX + 32 * RelChunkZ] & 0xff;
+		if ((chunkOffset < 2) || (numChunkSectors == 0))
+		{
+			return "";
+		}
+
+		// Get the real data size:
+		const char * chunkData = m_FileData.data() + chunkOffset * 4096;
+		UInt32 chunkSize = GetBEInt(chunkData);
+		if ((chunkSize < 2) || (chunkSize / 4096 > numChunkSectors))
+		{
+			// Bad data, bail out
+			return "";
+		}
+
+		// Check the compression method:
+		if (chunkData[4] != 2)
+		{
+			// Chunk is in an unknown compression
+			return "";
+		}
+		chunkSize--;
+
+		// Read the chunk data:
+		return m_FileData.substr(chunkOffset * 4096 + 5, chunkSize);
+	}
+
+protected:
+	AString m_FileData;
+	UInt32 m_Header[2048];
+
+
+	/** Reads the whole specified file contents and parses the header. */
+	void readFile(const AString & a_FileName)
+	{
+		// Read the entire file:
+		m_FileData = cFile::ReadWholeFile(a_FileName);
+		if (m_FileData.size() < sizeof(m_Header))
+		{
+			return;
+		}
+
+		// Parse the header - change endianness:
+		const char * hdr = m_FileData.data();
+		for (size_t i = 0; i < ARRAYCOUNT(m_Header); i++)
+		{
+			m_Header[i] = GetBEInt(hdr + 4 * i);
+		}
+		m_IsValid = true;
+	}
+};
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// AnvilSource:
+
+AnvilSource::AnvilSource(QString a_WorldRegionFolder) :
+	m_WorldRegionFolder(a_WorldRegionFolder)
+{
+}
+
+
+
+
+
+void AnvilSource::getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk)
+{
+	// Load the compressed data:
+	AString compressedChunkData = getCompressedChunkData(a_ChunkX, a_ChunkZ);
+	if (compressedChunkData.empty())
+	{
+		return;
+	}
+
+	// Uncompress the chunk data:
+	AString uncompressed;
+	int res = InflateString(compressedChunkData.data(), compressedChunkData.size(), uncompressed);
+	if (res != Z_OK)
+	{
+		return;
+	}
+
+	// Parse the NBT data:
+	cParsedNBT nbt(uncompressed.data(), uncompressed.size());
+	if (!nbt.IsValid())
+	{
+		return;
+	}
+
+	// Get the biomes out of the NBT:
+	int Level = nbt.FindChildByName(0, "Level");
+	if (Level < 0)
+	{
+		return;
+	}
+	cChunkDef::BiomeMap biomeMap;
+	int mcsBiomes = nbt.FindChildByName(Level, "MCSBiomes");
+	if ((mcsBiomes >= 0) && (nbt.GetDataLength(mcsBiomes) == sizeof(biomeMap)))
+	{
+		// Convert the biomes from BigEndian to platform native numbers:
+		const char * beBiomes = nbt.GetData(mcsBiomes);
+		for (size_t i = 0; i < ARRAYCOUNT(biomeMap); i++)
+		{
+			biomeMap[i] = (EMCSBiome)GetBEInt(beBiomes + 4 * i);
+		}
+		// Render the biomes:
+		Chunk::Image img;
+		biomesToImage(biomeMap, img);
+		a_DestChunk->setImage(img);
+		return;
+	}
+
+	// MCS biomes not found, load Vanilla biomes instead:
+	int biomes = nbt.FindChildByName(Level, "Biomes");
+	if ((biomes < 0) || (nbt.GetDataLength(biomes) != ARRAYCOUNT(biomeMap)))
+	{
+		return;
+	}
+	// Convert the biomes from Vanilla to EMCSBiome:
+	const char * vanillaBiomes = nbt.GetData(biomes);
+	for (size_t i = 0; i < ARRAYCOUNT(biomeMap); i++)
+	{
+		biomeMap[i] = EMCSBiome(vanillaBiomes[i]);
+	}
+	// Render the biomes:
+	Chunk::Image img;
+	biomesToImage(biomeMap, img);
+	a_DestChunk->setImage(img);
+}
+
+
+
+
+
+void AnvilSource::reload()
+{
+	// Remove all files from the cache:
+	QMutexLocker lock(&m_Mtx);
+	m_Files.clear();
+}
+
+
+
+
+
+void AnvilSource::chunkToRegion(int a_ChunkX, int a_ChunkZ, int & a_RegionX, int & a_RegionZ)
+{
+	a_RegionX = a_ChunkX >> 5;
+	a_RegionZ = a_ChunkZ >> 5;
+}
+
+
+
+
+
+AString AnvilSource::getCompressedChunkData(int a_ChunkX, int a_ChunkZ)
+{
+	return getAnvilFile(a_ChunkX, a_ChunkZ)->getChunkData(a_ChunkX, a_ChunkZ);
+}
+
+
+
+
+
+AnvilSource::AnvilFilePtr AnvilSource::getAnvilFile(int a_ChunkX, int a_ChunkZ)
+{
+	int RegionX, RegionZ;
+	chunkToRegion(a_ChunkX, a_ChunkZ, RegionX, RegionZ);
+
+	// Search the cache for the file:
+	QMutexLocker lock(&m_Mtx);
+	for (auto itr = m_Files.cbegin(), end = m_Files.cend(); itr != end; ++itr)
+	{
+		if (((*itr)->m_RegionX == RegionX) && ((*itr)->m_RegionZ == RegionZ))
+		{
+			// Found the file in the cache, move it to front and return it:
+			AnvilFilePtr file(*itr);
+			m_Files.erase(itr);
+			m_Files.push_front(file);
+			return file;
+		}
+	}
+
+	// File not in cache, create it:
+	AnvilFilePtr file(new AnvilFile(RegionX, RegionZ, m_WorldRegionFolder.toStdString()));
+	m_Files.push_front(file);
+	return file;
+}
+
+
+
+
+