Added new statistics module to AnvilStats - cHeightMap.

This paints the heightmap of each region file into a separate BMP file.

git-svn-id: http://mc-server.googlecode.com/svn/trunk@1163 0a769ca7-a7f5-676a-18bf-c427514a06d6

AnvilStats/AnvilStats.cpp

@@ -7,6 +7,7 @@
 #include "Processor.h"
 #include "Statistics.h"
 #include "BiomeMap.h"
+#include "HeightMap.h"
 
 
 
@@ -20,6 +21,7 @@ int main(int argc, char * argv[])
 		LOG("Available methods:");
 		LOG("  0 - statistics");
 		LOG("  1 - biome map");
+		LOG("  2 - height map");
 		LOG("\nNo method number present, aborting.");
 		return -1;
 	}
@@ -39,6 +41,7 @@ int main(int argc, char * argv[])
 	{
 		case 0: Factory = new cStatisticsFactory; break;
 		case 1: Factory = new cBiomeMapFactory; break;
+		case 2: Factory = new cHeightMapFactory; break;
 		default:
 		{
 			LOG("Unknown method \"%s\", aborting.", argv[1]);

AnvilStats/AnvilStats.vcproj

@@ -305,6 +305,14 @@
 				RelativePath=".\Globals.h"
 				>
 			</File>
+			<File
+				RelativePath=".\HeightMap.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\HeightMap.h"
+				>
+			</File>
 			<File
 				RelativePath=".\Processor.cpp"
 				>

AnvilStats/Callback.h

@@ -56,7 +56,10 @@ public:
 	
 	virtual bool OnBiomes(const unsigned char * a_BiomeData) { return true; }
 	
-	virtual bool OnHeightMap(const int * a_HeightMap) { return true; }
+	/** Called when a heightmap for the chunk is read from the file.
+	Note that the heightmap is given in big-endian ints, so if you want it, you need to ntohl() it first!
+	*/
+	virtual bool OnHeightMap(const int * a_HeightMapBE) { return true; }
 	
 	/** If there is data for the section, this callback is called; otherwise OnEmptySection() is called instead.
 	All OnSection() callbacks are called first, and only then all the remaining sections are reported in OnEmptySection().
@@ -75,6 +78,10 @@ public:
 	*/
 	virtual bool OnEmptySection(unsigned char a_Y) { return false; }
 	
+	/** Called after all sections have been processed via either OnSection() or OnEmptySection().
+	*/
+	virtual bool OnSectionsFinished(void) { return true; }
+	
 	/** Called for each entity in the chunk.
 	Common parameters are parsed from the NBT.
 	The callback may parse any other param from the a_NBT and a_NBTTag parameters.

AnvilStats/HeightMap.cpp

@@ -0,0 +1,265 @@
+
+// HeightMap.cpp
+
+// Implements the cHeightMap class representing a cCallback descendant that draws a B&W map of heights for the world
+
+#include "Globals.h"
+#include "HeightMap.h"
+
+
+
+
+static const unsigned char g_BMPHeader[] =
+{
+	0x42, 0x4D, 0x36, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00, 0x28, 0x00,
+	0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0xfe, 0xff, 0xff, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x13, 0x0B, 0x00, 0x00, 0x13, 0x0B, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+} ;
+
+
+
+
+
+cHeightMap::cHeightMap(void) :
+	m_CurrentRegionX(0),
+	m_CurrentRegionZ(0),
+	m_IsCurrentRegionValid(false)
+{
+}
+
+
+
+
+
+void cHeightMap::Finish(void)
+{
+	if (m_IsCurrentRegionValid)
+	{
+		StartNewRegion(0, 0);
+	}
+}
+
+
+
+
+
+bool cHeightMap::OnNewChunk(int a_ChunkX, int a_ChunkZ)
+{
+	int RegionX = (a_ChunkX < 0) ? (a_ChunkX - 31) / 32 : a_ChunkX / 32;
+	int RegionZ = (a_ChunkZ < 0) ? (a_ChunkZ - 31) / 32 : a_ChunkZ / 32;
+	if ((RegionX != m_CurrentRegionX) || (RegionZ != m_CurrentRegionZ))
+	{
+		if (m_IsCurrentRegionValid)
+		{
+			StartNewRegion(RegionX, RegionZ);
+		}
+		m_CurrentRegionX = RegionX;
+		m_CurrentRegionZ = RegionZ;
+	}
+	m_IsCurrentRegionValid = true;
+	m_CurrentChunkX = a_ChunkX;
+	m_CurrentChunkZ = a_ChunkZ;
+	m_CurrentChunkOffX = m_CurrentChunkX - m_CurrentRegionX * 32;
+	m_CurrentChunkOffZ = m_CurrentChunkZ - m_CurrentRegionZ * 32;
+	memset(m_BlockTypes, 0, sizeof(m_BlockTypes));
+	return false;
+}
+
+
+
+
+
+bool cHeightMap::OnHeightMap(const int * a_HeightMapBE)
+{
+	ASSERT(m_CurrentChunkOffX >= 0);
+	ASSERT(m_CurrentChunkOffX < 32);
+	ASSERT(m_CurrentChunkOffZ >= 0);
+	ASSERT(m_CurrentChunkOffZ < 32);
+	int * BaseHeight = m_Height + m_CurrentChunkOffZ * 16 * 512 + m_CurrentChunkOffX * 16;
+	for (int z = 0; z < 16; z++)
+	{
+		int * Row = BaseHeight + z * 512;
+		for (int x = 0; x < 16; x++)
+		{
+			Row[x] = ntohl(a_HeightMapBE[z * 16 + x]);
+		}
+	}  // for z
+	return false;  // Still want blockdata to remove trees from the heightmap
+}
+
+
+
+
+
+bool cHeightMap::OnSection(
+	unsigned char a_Y,
+	const BLOCKTYPE * a_BlockTypes,
+	const NIBBLETYPE * a_BlockAdditional,
+	const NIBBLETYPE * a_BlockMeta,
+	const NIBBLETYPE * a_BlockLight,
+	const NIBBLETYPE * a_BlockSkyLight
+)
+{
+	// Copy the section data into the appropriate place in the internal buffer
+	memcpy(m_BlockTypes + a_Y * 16 * 16 * 16, a_BlockTypes, 16 * 16 * 16);
+	return false;
+}
+
+
+
+
+
+bool cHeightMap::OnSectionsFinished(void)
+{
+	// Remove trees from the heightmap:
+	for (int z = 0; z < 16; z++)
+	{
+		for (int x = 0; x < 16; x++)
+		{
+			for (int y = m_Height[512 * (16 * m_CurrentChunkOffZ + z) + 16 * m_CurrentChunkOffX + x]; y >= 0; y--)
+			{
+				if (IsGround(m_BlockTypes[256 * y + 16 * z + x]))
+				{
+					m_Height[512 * (16 * m_CurrentChunkOffZ + z) + 16 * m_CurrentChunkOffX + x] = y;
+					break;  // for y
+				}
+			}  // for y
+		}  // for x
+	}  // for z
+	return true;
+}
+
+
+
+
+
+void cHeightMap::StartNewRegion(int a_RegionX, int a_RegionZ)
+{
+	AString FileName;
+	Printf(FileName, "Height.%d.%d.bmp", m_CurrentRegionX, m_CurrentRegionZ);
+	cFile f;
+	if (!f.Open(FileName, cFile::fmWrite))
+	{
+		LOG("Cannot open file \"%s\" for writing the height map. Data for this region lost.", FileName.c_str());
+	}
+	else
+	{
+		f.Write(g_BMPHeader, sizeof(g_BMPHeader));
+		for (int z = 0; z < 512; z++)
+		{
+			int RowData[512];
+			int * HeightRow = m_Height + z * 512;
+			for (int x = 0; x < 512; x++)
+			{
+				RowData[x] = std::max(std::min(HeightRow[x], 255), 0) * 0x010101;
+			}
+			f.Write(RowData, sizeof(RowData));
+		}  // for z
+	}
+
+	memset(m_Height, 0, sizeof(m_Height));
+	m_CurrentRegionX = a_RegionX;
+	m_CurrentRegionZ = a_RegionZ;
+}
+
+
+
+
+
+bool cHeightMap::IsGround(BLOCKTYPE a_BlockType)
+{
+	// Name all blocks that are NOT ground, return false for them:
+	switch (a_BlockType)
+	{
+		case E_BLOCK_AIR:
+		case E_BLOCK_BED:
+		case E_BLOCK_BREWING_STAND:
+		case E_BLOCK_BROWN_MUSHROOM:
+		case E_BLOCK_CACTUS:
+		case E_BLOCK_CAKE:
+		case E_BLOCK_CARROTS:
+		case E_BLOCK_CAULDRON:
+		case E_BLOCK_CHEST:
+		case E_BLOCK_COBBLESTONE_WALL:
+		case E_BLOCK_COBWEB:
+		case E_BLOCK_COCOA_POD:
+		case E_BLOCK_CROPS:
+		case E_BLOCK_DEAD_BUSH:
+		case E_BLOCK_DETECTOR_RAIL:
+		case E_BLOCK_DIRT:
+		case E_BLOCK_DRAGON_EGG:
+		case E_BLOCK_END_PORTAL:
+		case E_BLOCK_ENDER_CHEST:
+		case E_BLOCK_FENCE:
+		case E_BLOCK_FENCE_GATE:
+		case E_BLOCK_FIRE:
+		case E_BLOCK_FLOWER_POT:
+		case E_BLOCK_HEAD:
+		case E_BLOCK_IRON_BARS:
+		case E_BLOCK_LADDER:
+		case E_BLOCK_LAVA:
+		case E_BLOCK_LEAVES:
+		case E_BLOCK_LEVER:
+		case E_BLOCK_LILY_PAD:
+		case E_BLOCK_LOG:  // NOTE: This block is actually solid, but we don't want it because it's the thing that trees are made of, and we're getting rid of trees
+		case E_BLOCK_MELON:
+		case E_BLOCK_MELON_STEM:
+		case E_BLOCK_NETHER_BRICK_FENCE:
+		case E_BLOCK_NETHER_PORTAL:
+		case E_BLOCK_POWERED_RAIL:
+		case E_BLOCK_PUMPKIN:
+		case E_BLOCK_PUMPKIN_STEM:
+		case E_BLOCK_RAIL:
+		case E_BLOCK_RED_ROSE:
+		case E_BLOCK_RED_MUSHROOM:
+		case E_BLOCK_REDSTONE_REPEATER_OFF:
+		case E_BLOCK_REDSTONE_REPEATER_ON:
+		case E_BLOCK_REDSTONE_TORCH_OFF:
+		case E_BLOCK_REDSTONE_TORCH_ON:
+		case E_BLOCK_REDSTONE_WIRE:
+		case E_BLOCK_REEDS:
+		case E_BLOCK_SAPLING:
+		case E_BLOCK_SIGN_POST:
+		case E_BLOCK_SNOW:
+		case E_BLOCK_STATIONARY_LAVA:
+		case E_BLOCK_STATIONARY_WATER:
+		case E_BLOCK_STONE_BUTTON:
+		case E_BLOCK_STONE_PRESSURE_PLATE:
+		case E_BLOCK_TALL_GRASS:
+		case E_BLOCK_TORCH:
+		case E_BLOCK_TRIPWIRE:
+		case E_BLOCK_TRIPWIRE_HOOK:
+		case E_BLOCK_VINES:
+		case E_BLOCK_WALLSIGN:
+		case E_BLOCK_WATER:
+		case E_BLOCK_WOODEN_BUTTON:
+		case E_BLOCK_WOODEN_PRESSURE_PLATE:
+		case E_BLOCK_YELLOW_FLOWER:
+		{
+			return false;
+		}
+	}
+	return true;
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cHeightMapFactory:
+
+cHeightMapFactory::~cHeightMapFactory()
+{
+	// Force all threads to save their last regions:
+	for (cCallbacks::iterator itr = m_Callbacks.begin(), end = m_Callbacks.end(); itr != end; ++itr)
+	{
+		((cHeightMap *)(*itr))->Finish();
+	}
+	// TODO: Join all the files into one giant image file
+}
+
+
+
+

AnvilStats/HeightMap.h

@@ -0,0 +1,81 @@
+
+// HeightMap.h
+
+// Declares the cHeightMap class representing a cCallback descendant that draws a B&W map of heights for the world
+
+
+
+
+
+#pragma once
+
+#include "Callback.h"
+
+
+
+
+
+class cHeightMap :
+	public cCallback
+{
+public:
+	cHeightMap(void);
+	
+	void Finish(void);
+	
+protected:
+	int m_CurrentChunkX;  // Absolute chunk coords
+	int m_CurrentChunkZ;
+	int m_CurrentChunkOffX;  // Chunk offset from the start of the region
+	int m_CurrentChunkOffZ;
+	int m_CurrentRegionX;
+	int m_CurrentRegionZ;
+	bool m_IsCurrentRegionValid;
+	int  m_Height[16 * 32 * 16 * 32];  ///< Height-map of the entire current region [x + 16 * 32 * z]
+	BLOCKTYPE m_BlockTypes[16 * 16 * 256];  ///< Block data of the currently processed chunk (between OnSection() and OnSectionsFinished() )
+	
+	// cCallback overrides:
+	virtual bool OnNewChunk(int a_ChunkX, int a_ChunkZ) override;
+	virtual bool OnHeader(int a_FileOffset, unsigned char a_NumSectors, int a_Timestamp) override { return false; }
+	virtual bool OnCompressedDataSizePos(int a_CompressedDataSize, int a_DataOffset, char a_CompressionMethod) override { return false; }
+	virtual bool OnDecompressedData(const char * a_DecompressedNBT, int a_DataSize) override { return false; }
+	virtual bool OnRealCoords(int a_ChunkX, int a_ChunkZ) override { return false; }
+	virtual bool OnLastUpdate(Int64 a_LastUpdate) override { return false; }
+	virtual bool OnTerrainPopulated(bool a_Populated) override { return !a_Populated; }  // If not populated, we don't want it!
+	virtual bool OnBiomes(const unsigned char * a_BiomeData) { return false; }
+	virtual bool OnHeightMap(const int * a_HeightMapBE) override;
+	virtual bool OnSection(
+		unsigned char a_Y,
+		const BLOCKTYPE * a_BlockTypes,
+		const NIBBLETYPE * a_BlockAdditional,
+		const NIBBLETYPE * a_BlockMeta,
+		const NIBBLETYPE * a_BlockLight,
+		const NIBBLETYPE * a_BlockSkyLight
+	) override;
+	virtual bool OnSectionsFinished(void) override;
+
+	void StartNewRegion(int a_RegionX, int a_RegionZ);
+	
+	static bool IsGround(BLOCKTYPE a_BlockType);
+} ;
+
+
+
+
+
+class cHeightMapFactory :
+	public cCallbackFactory
+{
+public:
+	virtual ~cHeightMapFactory();
+	
+	virtual cCallback * CreateNewCallback(void)
+	{
+		return new cHeightMap;
+	}
+
+} ;
+
+
+
+

AnvilStats/Processor.cpp

@@ -326,10 +326,18 @@ bool cProcessor::cThread::ProcessChunkSections(int a_ChunkX, int a_ChunkZ, cPars
 	{
 		if (!SectionProcessed[y])
 		{
-			m_Callback.OnEmptySection(y);
+			if (m_Callback.OnEmptySection(y))
+			{
+				return true;
+			}
 		}
 	}
 	
+	if (m_Callback.OnSectionsFinished())
+	{
+		return true;
+	}
+	
 	return false;
 }
 
@@ -498,6 +506,14 @@ void cProcessor::ProcessWorld(const AString & a_WorldFolder, cCallbackFactory &
 	// Start as many threads as there are cores, plus one:
 	// (One more thread can be in the file-read IO block while all other threads crunch the numbers)
 	int NumThreads = GetNumCores() + 1;
+	
+	/*
+	// Limit the number of threads in DEBUG mode to 1 for easier debugging
+	#ifdef _DEBUG
+	NumThreads = 1;
+	#endif  // _DEBUG
+	*/
+	
 	for (int i = 0; i < NumThreads; i++)
 	{
 		cCallback * Callback = a_CallbackFactory.GetNewCallback();