public override bool attach(Direction newDir)
{
if (hasRail(newDir))
{
return(true); // already added
}
Direction d1 = dir1, d2 = dir2;
if (isWellConnected)
{
Debug.Assert(is1or3or4(Direction.angle(d1, newDir)) && is1or3or4(Direction.angle(d2, newDir)));
// if the line is already well connected, make it a junction
TrafficVoxel v = voxel;
v.railRoad = new JunctionRailRoad(v, RailPattern.getJunction(d1, d2, newDir));
World.world.onVoxelUpdated(voxel);
return(true);
}
else
{
// if the line is not well connected, change the
// direction
if (Direction.angle(d1, newDir) >= 3)
{
pattern = RailPattern.get(d1, newDir);
World.world.onVoxelUpdated(voxel);
return(true);
}
if (Direction.angle(d2, newDir) >= 3)
{
pattern = RailPattern.get(d2, newDir);
World.world.onVoxelUpdated(voxel);
return(true);
}
}
return(false); // unable to attach this.
}
