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// Caves.h

// Interfaces to the various cave structure generators:
//   - cStructGenWormNestCaves
//   - cStructGenMarbleCaves
//   - cStructGenNetherCaves





#pragma once

#include "GridStructGen.h"





class cStructGenMarbleCaves : public cFinishGen
{
  public:
	cStructGenMarbleCaves(int a_Seed) :
		m_Seed(a_Seed)
	{
	}

  protected:
	int m_Seed;

	// cFinishGen override:
	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
};





class cStructGenDualRidgeCaves : public cFinishGen
{
  public:
	cStructGenDualRidgeCaves(int a_Seed, float a_Threshold) :
		m_Noise1(a_Seed), m_Noise2(2 * a_Seed + 19999), m_Seed(a_Seed), m_Threshold(a_Threshold)
	{
	}

  protected:
	cNoise m_Noise1;
	cNoise m_Noise2;
	int m_Seed;
	float m_Threshold;

	// cFinishGen override:
	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
};





class cStructGenWormNestCaves : public cGridStructGen
{
	using Super = cGridStructGen;

  public:
	cStructGenWormNestCaves(int a_Seed, int a_Size = 64, int a_Grid = 96, int a_MaxOffset = 128) :
		Super(a_Seed, a_Grid, a_Grid, a_MaxOffset, a_MaxOffset, a_Size, a_Size, 100),
		m_Size(a_Size),
		m_MaxOffset(a_MaxOffset),
		m_Grid(a_Grid)
	{
	}

  protected:
	class cCaveSystem;  // fwd: Caves.cpp

	int m_Size;  // relative size of the cave systems' caves. Average number of blocks of each initial tunnel
	int m_MaxOffset;  // maximum offset of the cave nest origin from the grid cell the nest belongs to
	int m_Grid;  // average spacing of the nests

	// cGridStructGen override:
	virtual cStructurePtr CreateStructure(int a_GridX, int a_GridZ, int a_OriginX, int a_OriginZ) override;
};