public bool canBeBuilt(Location loc)
{
TrafficVoxel voxel = TrafficVoxel.get(loc);
if (voxel == null)
{
return(false);
}
RailRoad rr = voxel.railRoad;
if (rr == null)
{
return(false);
}
RailPattern rp = rr.getPattern();
if (rp.numberOfRails != 2)
{
return(false);
}
if (!rp.hasRail(rr.dir1.opposite))
{
return(false);
}
return(rr.dir1.isSharp);
}
/// <summary>
/// Check if this voxel should have a rail road crossing.
/// </summary>
/// <returns></returns>
private bool shouldHaveCrossing()
{
if (_railRoad == null || _road == null)
{
return(false);
}
RailPattern rp = _railRoad.getPattern();
Direction rdir1 = _railRoad.dir1;
if (rp.numberOfRails != 2 || !rp.hasRail(rdir1.opposite))
{
return(false); // the rail must be going straight.
}
if (!rdir1.isSharp)
{
return(false); // rail must be paralell to X-axis or Y-axis.
}
if (!_road.hasRoad(rdir1.left90) || !_road.hasRoad(rdir1.right90))
{
return(false); // road must be orthogonal to rail road
}
return(true);
}