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Editor/TerrainBeachGen.h

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+////////////////////////////////////////////////////////////////////////////
+//
+//  Crytek Engine Source File.
+//  Copyright (C), Crytek Studios, 2002.
+// -------------------------------------------------------------------------
+//  File name:   terrainbeachgen.h
+//  Version:     v1.00
+//  Created:     1/7/2003 by Vladimir.
+//  Compilers:   Visual Studio.NET
+//  Description: 
+// -------------------------------------------------------------------------
+//  History:
+//
+////////////////////////////////////////////////////////////////////////////
+
+#ifndef __terrainbeachgen_h__
+#define __terrainbeachgen_h__
+#pragma once
+
+//////////////////////////////////////////////////////////////////////////
+// Dynamic replacement for static 2d array
+//////////////////////////////////////////////////////////////////////////
+template <class T> struct Array2d
+{
+	Array2d() 
+	{ 
+		m_nSize = 0; 
+		m_pData = 0;
+	}
+
+	void GetMemoryUsage(ICrySizer*pSizer)
+	{
+		pSizer->AddObject (m_pData, m_nSize*m_nSize*sizeof(T));
+	}
+
+	void Allocate(int nSize) 
+	{ 
+		if(m_nSize == nSize)
+			return;
+
+		delete m_pData;
+
+		m_nSize = nSize; 
+		m_pData = new T [nSize*nSize];
+		memset(m_pData, 0, nSize*nSize*sizeof(T));
+	}
+
+	~Array2d() 
+	{ 
+		delete [] m_pData;
+	}
+
+	T * m_pData;
+	int m_nSize;
+
+	T * operator [] (const int & nPos) const
+	{
+		assert(nPos>=0 && nPos<m_nSize);
+		return &m_pData[nPos*m_nSize];
+	}
+
+	void operator = (const Array2d & other)
+	{
+		Allocate(other.m_nSize);
+		memcpy(m_pData,other.m_pData,m_nSize*m_nSize*sizeof(T));
+	}
+};
+
+//////////////////////////////////////////////////////////////////////////
+struct CTerrainSectorBeachInfo
+{
+	bool m_bBeachPresent;
+
+	struct BeachPairStruct 
+	{ 
+		BeachPairStruct () { ZeroStruct(*this); }
+		Vec3d pos, water_dir; float distance; int busy; 
+		Vec3d pos1,posm,pos2;
+	};
+#define MAX_BEACH_GROUPS 16
+	std::vector<BeachPairStruct> m_arrlistBeachVerts[MAX_BEACH_GROUPS];
+	std::vector<BeachPairStruct> m_lstUnsortedBeachVerts; // tmp
+
+	CLeafBuffer * m_pLeafBufferBeach;
+	int m_nOriginX, m_nOriginY; // sector origin
+};
+
+// Shore geometry generator
+class CTerrainBeachGenerator
+{
+public:
+	CTerrainBeachGenerator( CHeightmap *pTerrain);
+	void Generate( CFile &file );
+
+private:
+	int MarkWaterAreas();
+	void MakeBeachStage1( CTerrainSectorBeachInfo *pSector );
+	void MakeBeachStage2( CTerrainSectorBeachInfo *pSector );
+
+	float GetZSafe( int x,int y );
+	float GetZSafe( float x,float y );
+	float GetZApr(float x1, float y1);
+
+	int GetSecIndex( CTerrainSectorBeachInfo *pSector )
+	{
+		return (pSector->m_nOriginX/m_sectorSize)*m_sectorTableSize + (pSector->m_nOriginY/m_sectorSize); }
+
+	CHeightmap* m_pTerrain;
+	struct CBeachInfo { bool beach,in_water; };
+	Array2d<CBeachInfo> m_arrBeachMap;
+	Array2d<char>  m_WaterAreaMap;
+	std::vector<int> m_lstWaterAreaSizeTable;
+	std::vector<CTerrainSectorBeachInfo*> m_sectors;
+	int m_nMaxAreaSize;
+
+	int m_sectorTableSize;
+	int m_sectorSize;
+	int m_unitSize;
+	int m_terrainSize;
+	int m_heightmapSize;
+	float m_waterLevel;
+	float m_fShoreSize;
+	float* m_pHeightmapData;
+
+	CFile *m_pFile;
+};
+
+#endif // __terrainbeachgen_h__