public Area(World world)
{
mWorld = world;
}
public AreaNESW(World world)
{
N = new Area(world);
E = new Area(world);
S = new Area(world);
W = new Area(world);
N.Left = W;
E.Left = N;
S.Left = E;
W.Left = S;
N.Right = E;
E.Right = S;
S.Right = W;
W.Right = N;
}