public float calc_water_depth(uint blockCellID, Vector3 point)
{
var cellID = blockCellID & 0xFFFF;
var cellOffset = cellID - 1;
uint cellX = 0, cellY = cellID;
if (LandDefs.inbound_valid_cellid(cellID) && cellID < 0x100)
{
cellX = cellOffset / 8;
cellY = cellOffset & 7;
}
uint terrainIdx;
uint surfOffset = 0;
// missing fpu instructions
if (point.X <= point.Y)
{
terrainIdx = (cellY + 8 * cellX + cellX + 1);
if (point.X == point.Y)
{
terrainIdx--;
}
}
else if (point.X >= point.Y)
{
terrainIdx = cellY + 8 * (cellX + 1) + cellX + 1;
}
else // ?
{
terrainIdx = 8 * cellX + 10;
surfOffset = (cellX + cellY) * 2;
}
var column = Terrain[(int)terrainIdx & 0xFF];
var hasWater = SurfChar[column + (int)surfOffset & 0x7F];
if (hasWater != 0)
{
if (hasWater == 1)
{
return(0.44999999f);
}
else
{
return(0);
}
}
else
{
return(0.1f);
}
}