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Quellcode

void CTerrain::CreateTerrain(char *Filename, float xs, float ys)
{
unsigned char aHeightMap[TERRAIN_X + 1][TERRAIN_Y + 1];
D3DVERTEX* pVertexData;
short* pIndexData;
ifstream File;

//load height information from file
File.open(Filename,ios::binary);

for(unsigned y = 0;y < (TERRAIN_Y + 1);++y)
 {
 for(unsigned x = 0;x < (TERRAIN_X + 1);++x)
  {
  File.get(aHeightMap[x][y]);
  }
 }

File.close();

//create vertex buffer and fill in vertcies
g_App.GetDevice()->CreateVertexBuffer(sizeof(D3DVERTEX) * m_dwTerrainVertices,D3DUSAGE_WRITEONLY,D3DFVF_CUSTOMVERTEX,D3DPOOL_MANAGED,&m_pTerrainVB,NULL);
m_pTerrainVB->Lock(0,0,(void**)&pVertexData,0);

for(y = 0;y < (TERRAIN_Y + 1);++y)
 {
 for(unsigned x = 0;x < (TERRAIN_X + 1);++x)
  {
  pVertexData[x + y * (TERRAIN_X + 1)].fX = (float)x;
  pVertexData[x + y * (TERRAIN_X + 1)].fY = (float)y;
  pVertexData[x + y * (TERRAIN_X + 1)].fZ = (float)aHeightMap[x][y] / 15.0f;
  pVertexData[x + y * (TERRAIN_X + 1)].dwColor = 0xffffffff;
  }
 }

m_pTerrainVB->Unlock();

//create index buffer and fill in indices
g_App.GetDevice()->CreateIndexBuffer(sizeof(short) * m_dwTerrainPrimitives * 3,D3DUSAGE_WRITEONLY,D3DFMT_INDEX16,D3DPOOL_MANAGED,&m_pTerrainIB,NULL);
m_pTerrainIB->Lock(0,0,(void**)&pIndexData,0);

for(y = 0;y < TERRAIN_Y;++y)
 {
 for(unsigned x = 0;x < TERRAIN_X;++x)
  {
  *pIndexData++ = x + y * (TERRAIN_X + 1);
  *pIndexData++ = x + 1 + y * (TERRAIN_X + 1);
  *pIndexData++ = x + 1 + (y + 1) * (TERRAIN_X + 1);

  *pIndexData++ = x + y * (TERRAIN_X + 1);
  *pIndexData++ = x + 1 + (y + 1) * (TERRAIN_X + 1);
  *pIndexData++ = x + (y + 1) * (TERRAIN_X + 1);
  }
 }

m_pTerrainIB->Unlock();
}