/// <summary>
///
/// </summary>
/// <param name="d"></param>
/// <returns></returns>
public override bool Attach(Direction d)
{
byte dirs = pattern.dirs;
dirs |= (byte)(1 << (d.index / 2));
Voxel.road = new RoadImpl(contribution, Voxel, RoadPattern.get(dirs));
return(true);
}
/// <summary>
///
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
public override void Build(Location from, Location to)
{
Debug.Assert(CanBeBuilt(from, to));
Direction d = from.getDirectionTo(to);
Location here = from;
while (true)
{
BaseRoad r = BaseRoad.get(here);
if (r == null)
{
RoadPattern p = RoadPattern.getStraight(d);
if (here == from)
{
p = RoadPattern.get((byte)(1 << (d.index / 2)));
}
if (here == to)
{
p = RoadPattern.get((byte)(1 << (d.opposite.index / 2)));
}
Create(TrafficVoxel.getOrCreate(here), p);
}
else
{
if (here != from)
{
r.Attach(d.opposite);
}
if (here != to)
{
r.Attach(d);
}
}
if (here == to)
{
return;
}
here = here.toward(to);
}
}
/// <summary>
///
/// </summary>
/// <param name="d1"></param>
/// <param name="d2"></param>
public override void Detach(Direction d1, Direction d2)
{
byte dirs = pattern.dirs;
dirs &= (byte)~(1 << (d1.index / 2));
dirs &= (byte)~(1 << (d2.index / 2));
if (dirs == 0)
{
// destroy this road
Voxel.road = null;
}
else
{
Voxel.road = new RoadImpl(contribution, Voxel, RoadPattern.get(dirs));
}
WorldDefinition.World.OnVoxelUpdated(Location);
}
