public void GenerateRooms(MT19337 rng)
{
// this function generates all the rooms and hallways for this BSPMapNode and all of its children.
if (LeftChild == null && RightChild == null)
{
if (WalkableSpace != null)
{
return;
}
// the room can be between 3 x 3 tiles to the size of the leaf - 2.
var roomWidth = rng.Between(BSPTreeEngine.MIN_ROOM_WIDTH, Width - 2);
var roomHeight = rng.Between(BSPTreeEngine.MIN_ROOM_HEIGHT, Height - 2);
// place the room within the BSPMapNode, but don't put it right
// against the side of the BSPMapNode (that would merge rooms together)
var roomStartX = rng.Between(1, Width - roomWidth - 1);
var roomStartY = rng.Between(1, Height - roomHeight - 1);
WalkableSpace = new Rectangle(X + roomStartX, Y + roomStartY, roomWidth, roomHeight);
return;
}
// subleafs:
LeftChild?.GenerateRooms(rng);
RightChild?.GenerateRooms(rng);
// both leafs exist. we know their GetRandomRoom shouldn't return null, because we just called GenerateRooms.
if (LeftChild != null && RightChild != null)
{
MakeHallway(rng, (Rectangle)LeftChild.GetRandomRoom(rng), (Rectangle)RightChild.GetRandomRoom(rng));
}
}
private Point PointInAnyRandomRoom(MT19337 rng)
{
var some_room = (Rectangle)root.GetRandomRoom(rng);
return(new Point(some_room.X + rng.Between(1, some_room.Width - 1), some_room.Y + rng.Between(1, some_room.Height - 1)));
}
