TILE(TileIndex tile, Trackdir td)
{
this->tile = tile;
this->td = td;
this->tile_type = GetTileType(tile);
this->rail_type = GetTileRailType(tile);
}
/**
* Tests if a vehicle can enter a tile.
*
* @param tile The tile of interest.
* @param dir The direction in which the vehicle drives onto a tile.
* @param type The transporttype of the vehicle.
* @param subtype For TRANSPORT_ROAD the compatible RoadTypes of the vehicle.
* @param railtypes For TRANSPORT_RAIL the compatible RailTypes of the vehicle.
* @param owner The owner of the vehicle.
* @return true iff the vehicle can enter the tile.
*/
static bool CanEnterTile(TileIndex tile, DiagDirection dir, TransportType type, uint subtype, RailTypes railtypes, Owner owner)
{
/* Check tunnel entries and bridge ramps */
if (IsTileType(tile, MP_TUNNELBRIDGE) && GetTunnelBridgeDirection(tile) != dir) return false;
/* Test ownership */
if (!CanEnterTileOwnerCheck(owner, tile, dir)) return false;
/* check correct rail type (mono, maglev, etc) */
if (type == TRANSPORT_RAIL) {
RailType rail_type = GetTileRailType(tile);
if (!HasBit(railtypes, rail_type)) return false;
}
/* Depots, standard roadstops and single tram bits can only be entered from one direction */
DiagDirection single_entry = GetTileSingleEntry(tile, type, subtype);
if (single_entry != INVALID_DIAGDIR && single_entry != ReverseDiagDir(dir)) return false;
return true;
}
