private void RefreshOctant(Point2D point, int octant, int radius)
{
ShadowLine line = new ShadowLine();
bool fullShadow = false;
int radiusSquared = radius * radius;
for (int row = 1; row <= radius; row++)
{
int rowSquared = row * row;
Point2D pos = point + TransformOctant(row, 0, octant);
if (!_map.InBounds(pos.X, pos.Y))
{
break;
}
for (int col = 0; col <= row; col++)
{
Point2D colPos = point + TransformOctant(row, col, octant);
if (!_map.InBounds(colPos.X, colPos.Y))
{
break;
}
if (rowSquared + col * col > radiusSquared)
{
break;
}
if (fullShadow)
{
_map.SetVisible(colPos.X, colPos.Y, false);
}
else
{
Shadow projection = ProjectTile(row, col);
bool visible = !line.IsInShadow(projection);
_map.SetVisible(colPos.X, colPos.Y, visible);
if (visible && _map.IsSolid(colPos.X, colPos.Y))
{
line.Add(projection);
fullShadow = line.IsFullShadow;
}
}
}
}
}
public void RefreshOctant(Vinteger start, int octant, int maxRows = 999)
{
var line = new ShadowLine();
var fullShadow = false;
for (var row = 1; row < maxRows; row++)
{
var bounds = start.Add(TransformOctant(row, 0, octant));
if (!InBoundsAndClose(bounds.X, bounds.Y))
{
break;
}
for (var col = 0; col <= row; col++)
{
var pos = start.Add(TransformOctant(row, col, octant));
if (!InBoundsAndClose(pos.X, pos.Y))
{
break;
}
if (fullShadow)
{
var tile = _grid[pos.X, pos.Y];
tile.Visibility = Visibilities.Invisible;
}
else
{
var projection = ProjectTile(row, col);
var visible = !line.IsInShadow(projection);
var tile = _grid[pos.X, pos.Y];
var blocksLight = tile.GetBlocksLight();
if (!visible)
{
tile.Visibility = Visibilities.Invisible;
}
else
{
if (tile.Visibility != Visibilities.Visible && tile.GetPresentEntity() != null)
{
tile.GetPresentEntity().PositionRevealed();
}
tile.Visibility = Visibilities.Visible;
tile.Revealed = true;
}
if (visible && blocksLight)
{
line.Add(projection);
fullShadow = line.IsFullShadow();
}
}
}
}
}