1 files changed, 165 insertions, 0 deletions

diff --git a/src/Generating/StructGen.h b/src/Generating/StructGen.h
new file mode 100644
index 000000000..853748bb8
--- /dev/null
+++ b/src/Generating/StructGen.h
@@ -0,0 +1,165 @@
+
+// StructGen.h
+
+/* Interfaces to the various structure generators:
+	- cStructGenTrees
+	- cStructGenMarbleCaves
+	- cStructGenOres
+*/
+
+
+
+
+
+#pragma once
+
+#include "ComposableGenerator.h"
+#include "../Noise.h"
+
+
+
+
+
+class cStructGenTrees :
+	public cStructureGen
+{
+public:
+	cStructGenTrees(int a_Seed, cBiomeGen * a_BiomeGen, cTerrainHeightGen * a_HeightGen, cTerrainCompositionGen * a_CompositionGen) :
+		m_Seed(a_Seed),
+		m_Noise(a_Seed),
+		m_BiomeGen(a_BiomeGen),
+		m_HeightGen(a_HeightGen),
+		m_CompositionGen(a_CompositionGen)
+	{}
+	
+protected:
+
+	int m_Seed;
+	cNoise m_Noise;
+	cBiomeGen *              m_BiomeGen;
+	cTerrainHeightGen *      m_HeightGen;
+	cTerrainCompositionGen * m_CompositionGen;
+	
+	/** Generates and applies an image of a single tree.
+	Parts of the tree inside the chunk are applied to a_BlockX.
+	Parts of the tree outside the chunk are stored in a_OutsideX
+	*/
+	void GenerateSingleTree(
+		int a_ChunkX, int a_ChunkZ, int a_Seq,
+		cChunkDesc & a_ChunkDesc,
+		sSetBlockVector & a_OutsideLogs,
+		sSetBlockVector & a_OutsideOther
+	) ;
+	
+	/// Applies an image into chunk blockdata; all blocks outside the chunk will be appended to a_Overflow
+	void ApplyTreeImage(
+		int a_ChunkX, int a_ChunkZ,
+		cChunkDesc & a_ChunkDesc,
+		const sSetBlockVector & a_Image,
+		sSetBlockVector & a_Overflow
+	);
+
+	int GetNumTrees(
+		int a_ChunkX, int a_ChunkZ,
+		const cChunkDef::BiomeMap & a_Biomes
+	);
+	
+	// cStructureGen override:
+	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+} ;
+
+
+
+
+
+class cStructGenOreNests :
+	public cStructureGen
+{
+public:
+	cStructGenOreNests(int a_Seed) : m_Noise(a_Seed), m_Seed(a_Seed) {}
+	
+protected:
+	cNoise m_Noise;
+	int    m_Seed;
+	
+	// cStructureGen override:
+	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	
+	void GenerateOre(int a_ChunkX, int a_ChunkZ, BLOCKTYPE a_OreType, int a_MaxHeight, int a_NumNests, int a_NestSize, cChunkDef::BlockTypes & a_BlockTypes, int a_Seq);
+} ;
+
+
+
+
+
+class cStructGenLakes :
+	public cStructureGen
+{
+public:
+	cStructGenLakes(int a_Seed, BLOCKTYPE a_Fluid, cTerrainHeightGen & a_HeiGen, int a_Probability) :
+		m_Noise(a_Seed),
+		m_Seed(a_Seed),
+		m_Fluid(a_Fluid),
+		m_HeiGen(a_HeiGen),
+		m_Probability(a_Probability)
+	{
+	}
+	
+protected:
+	cNoise              m_Noise;
+	int                 m_Seed;
+	BLOCKTYPE           m_Fluid;
+	cTerrainHeightGen & m_HeiGen;
+	int                 m_Probability;  ///< Chance, 0 .. 100, of a chunk having the lake
+	
+	// cStructureGen override:
+	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	
+	/// Creates a lake image for the specified chunk into a_Lake
+	void CreateLakeImage(int a_ChunkX, int a_ChunkZ, cBlockArea & a_Lake);
+} ;
+
+
+
+
+
+
+class cStructGenDirectOverhangs :
+	public cStructureGen
+{
+public:
+	cStructGenDirectOverhangs(int a_Seed);
+
+protected:
+	cNoise    m_Noise1;
+	cNoise    m_Noise2;
+	
+	// cStructureGen override:
+	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+
+	bool HasWantedBiome(cChunkDesc & a_ChunkDesc) const;
+} ;
+
+
+
+
+
+class cStructGenDistortedMembraneOverhangs :
+	public cStructureGen
+{
+public:
+	cStructGenDistortedMembraneOverhangs(int a_Seed);
+
+protected:
+	cNoise m_NoiseX;
+	cNoise m_NoiseY;
+	cNoise m_NoiseZ;
+	cNoise m_NoiseH;
+	
+	// cStructureGen override:
+	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+} ;
+
+
+
+