Function CheckTrainsOnTrack

src/pbs.cpp:267–280

Find the best matching vehicle on a tile. */

/** Find the best matching vehicle on a tile. */
static void CheckTrainsOnTrack(FindTrainOnTrackInfo &info, TileIndex tile)
{
	for (Vehicle *v : VehiclesOnTile(tile)) {
		if (v->type != VEH_TRAIN || v->vehstatus.Test(VehState::Crashed)) continue;

		Train *t = Train::From(v);
		if (t->track == TRACK_BIT_WORMHOLE || HasBit(static_cast<TrackBits>(t->track), TrackdirToTrack(info.res.trackdir))) {
			t = t->First();

			/* ALWAYS return the lowest ID (anti-desync!) */
			if (info.best == nullptr || t->index < info.best->index) info.best = t;
		}
	}
}

/**
 * Follow a train reservation to the last tile.