// This puts a thing in the blockmap
public void AddThing(Thing t)
{
Point p = GetBlockCoordinates(t.Position);
VisualBlockEntry block = GetBlock(p);
block.Things.Add(t);
}
// This returns the block with the given coordinates
// Creates the block if it doesn't exist yet
public VisualBlockEntry GetBlock(Point p)
{
ulong k = GetBlockKey(p);
if (blockmap.ContainsKey(k))
{
return(blockmap[k]);
}
else
{
return(blockmap[k] = new VisualBlockEntry());
}
}
// This puts a sector in the blockmap
public void AddSector(Sector s)
{
Point p1 = GetBlockCoordinates(new Vector2D(s.BBox.Left, s.BBox.Top));
Point p2 = GetBlockCoordinates(new Vector2D(s.BBox.Right, s.BBox.Bottom));
for (int x = p1.X; x <= p2.X; x++)
{
for (int y = p1.Y; y <= p2.Y; y++)
{
VisualBlockEntry block = GetBlock(new Point(x, y));
block.Sectors.Add(s);
}
}
}
// This puts a thing in the blockmap
public void AddThing(Thing t)
{
//mxd
Point p1 = GetBlockCoordinates(new Vector2D(t.Position.x - t.Size, t.Position.y - t.Size));
Point p2 = GetBlockCoordinates(new Vector2D(t.Position.x + t.Size, t.Position.y + t.Size));
for (int x = p1.X; x <= p2.X; x++)
{
for (int y = p1.Y; y <= p2.Y; y++)
{
VisualBlockEntry block = GetBlock(new Point(x, y));
block.Things.Add(t);
}
}
}
public VisualBlockEntry GetEntry(Rectangle box, int level = 0)
{
if (level == MaxLevels)
{
if (visualBlock == null)
{
visualBlock = new VisualBlockEntry();
}
return(visualBlock);
}
if (topLeft == null)
{
CreateChildren();
}
if (topLeft.bbox.Contains(box))
{
return(topLeft.GetEntry(box, level + 1));
}
if (topRight.bbox.Contains(box))
{
return(topRight.GetEntry(box, level + 1));
}
if (bottomLeft.bbox.Contains(box))
{
return(bottomLeft.GetEntry(box, level + 1));
}
if (bottomRight.bbox.Contains(box))
{
return(bottomRight.GetEntry(box, level + 1));
}
if (visualBlock == null)
{
visualBlock = new VisualBlockEntry();
}
return(visualBlock);
}