float TerrainMgr::GetLandHeight(float x, float y)
{
if(!AreCoordinatesValid(x, y))
return 0.0f;
// Convert the co-ordinates to cells.
uint32 CellX = ConvertGlobalXCoordinate(x);
uint32 CellY = ConvertGlobalYCoordinate(y);
if(!CellInformationLoaded(CellX, CellY) && !LoadCellInformation(CellX, CellY))
return 0.0f;
// Convert the co-ordinates to cell's internal
// system.
float IntX = ConvertInternalXCoordinate(x, CellX);
float IntY = ConvertInternalYCoordinate(y, CellY);
// Calculate x index.
float TempFloat = IntX * (MAP_RESOLUTION / CellsPerTile / _cellSize);
uint32 XOffset = FL2UINT(TempFloat);
if((TempFloat - (XOffset * _cellSize)) >= 0.5f)
++XOffset;
// Calculate y index.
TempFloat = IntY * (MAP_RESOLUTION / CellsPerTile / _cellSize);
uint32 YOffset = FL2UINT(TempFloat);
if((TempFloat - (YOffset * _cellSize)) >= 0.5f)
++YOffset;
// Return our cached information.
return GetCellInformation(CellX, CellY)->Z[XOffset][YOffset];
}
bool TerrainMgr::WriteNewHeightToPos(float x, float y, float new_z)
{
if(!AreCoordinatesValid(x, y))
return false;
// Convert the co-ordinates to cells.
uint32 CellX = ConvertGlobalXCoordinate(x);
uint32 CellY = ConvertGlobalYCoordinate(y);
if(!CellInformationLoaded(CellX, CellY) && !LoadCellInformation(CellX, CellY))
return false;
// Convert the co-ordinates to cell's internal
// system.
float IntX = ConvertInternalXCoordinate(x, CellX);
float IntY = ConvertInternalYCoordinate(y, CellY);
// Calculate x index.
float TempFloat = IntX * (MAP_RESOLUTION / CellsPerTile / _cellSize);
uint32 XOffset = FL2UINT(TempFloat);
if((TempFloat - (XOffset * _cellSize)) >= 0.5f)
++XOffset;
// Calculate y index.
TempFloat = IntY * (MAP_RESOLUTION / CellsPerTile / _cellSize);
uint32 YOffset = FL2UINT(TempFloat);
if((TempFloat - (YOffset * _cellSize)) >= 0.5f)
++YOffset;
if( CellX > 511 )
CellX = 511;
if( CellY > 511 )
CellY = 511;
if( XOffset > 31 )
XOffset = 31;
if( YOffset > 31 )
YOffset = 31;
// Return our cached information.
CellInformation[CellX][CellY]->Z[XOffset][YOffset] = new_z;
return true;
}
uint16 TerrainMgr::GetAreaID(float x, float y)
{
if(!AreCoordinatesValid(x, y))
return 0;
// Convert the co-ordinates to cells.
uint32 CellX = ConvertGlobalXCoordinate(x);
uint32 CellY = ConvertGlobalYCoordinate(y);
if(!CellInformationLoaded(CellX, CellY) && !LoadCellInformation(CellX, CellY))
return 0;
// Convert the co-ordinates to cell's internal
// system.
float IntX = ConvertInternalXCoordinate(x, CellX);
float IntY = ConvertInternalYCoordinate(y, CellY);
// Find the offset in the 2d array.
return GetCellInformation(CellX, CellY)->AreaID[ConvertTo2dArray(IntX)][ConvertTo2dArray(IntY)];
}
