internal static void ComputeRecursiveShadowcasting(PhysicsMap map, int playerX, int playerY, int maxRadius, bool lightWalls)
{
map.ClearVisibility();
if ( maxRadius == 0 )
{
int max_radius_x = map.Width - playerX;
int max_radius_y = map.Height - playerY;
max_radius_x = Math.Max(max_radius_x, playerX);
max_radius_y = Math.Max(max_radius_y, playerY);
maxRadius = (int)(Math.Sqrt(max_radius_x * max_radius_x + max_radius_y * max_radius_y)) + 1;
}
int r2 = maxRadius * maxRadius;
/* recursive shadow casting */
for (int oct = 0; oct < 8; oct++)
{
CastLight(map, playerX, playerY, 1, 1.0f, 0.0f, maxRadius, r2, mult[0,oct], mult[1,oct], mult[2,oct], mult[3,oct], 0, lightWalls);
}
map.Cells[playerX, playerY].Visible = true;
}
