OpenTTD
road_map.cpp
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1 /*
2  * This file is part of OpenTTD.
3  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
4  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
6  */
7 
10 #include "stdafx.h"
11 #include "station_map.h"
12 #include "tunnelbridge_map.h"
13 
14 #include "safeguards.h"
15 
16 
33 RoadBits GetAnyRoadBits(TileIndex tile, RoadTramType rtt, bool straight_tunnel_bridge_entrance)
34 {
35  if (!MayHaveRoad(tile) || !HasTileRoadType(tile, rtt)) return ROAD_NONE;
36 
37  switch (GetTileType(tile)) {
38  case MP_ROAD:
39  switch (GetRoadTileType(tile)) {
40  default:
41  case ROAD_TILE_NORMAL: return GetRoadBits(tile, rtt);
42  case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
44  }
45 
46  case MP_STATION:
47  if (!IsRoadStopTile(tile)) return ROAD_NONE;
48  if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y;
49  return DiagDirToRoadBits(GetRoadStopDir(tile));
50 
51  case MP_TUNNELBRIDGE:
53  return straight_tunnel_bridge_entrance ?
56 
57  default: return ROAD_NONE;
58  }
59 }
static TileType GetTileType(TileIndex tile)
Get the tiletype of a given tile.
Definition: tile_map.h:96
static TransportType GetTunnelBridgeTransportType(TileIndex t)
Tunnel: Get the transport type of the tunnel (road or rail) Bridge: Get the transport type of the bri...
Level crossing.
Definition: road_map.h:23
Maps accessors for stations.
RoadBits GetAnyRoadBits(TileIndex tile, RoadTramType rtt, bool straight_tunnel_bridge_entrance)
Returns the RoadBits on an arbitrary tile Special behaviour:
Definition: road_map.cpp:33
static bool HasTileRoadType(TileIndex t, RoadTramType rtt)
Check if a tile has a road or a tram road type.
Definition: road_map.h:210
A tile with road (or tram tracks)
Definition: tile_type.h:43
Full road along the x-axis (south-west + north-east)
Definition: road_type.h:56
static DiagDirection GetRoadDepotDirection(TileIndex t)
Get the direction of the exit of a road depot.
Definition: road_map.h:565
static bool IsDriveThroughStopTile(TileIndex t)
Is tile t a drive through road stop station?
Definition: station_map.h:233
Normal road.
Definition: road_map.h:22
static RoadBits DiagDirToRoadBits(DiagDirection d)
Create the road-part which belongs to the given DiagDirection.
Definition: road_func.h:96
static RoadBits GetRoadBits(TileIndex t, RoadTramType rtt)
Get the present road bits for a specific road type.
Definition: road_map.h:127
static DiagDirection GetRoadStopDir(TileIndex t)
Gets the direction the road stop entrance points towards.
Definition: station_map.h:257
static DiagDirection ReverseDiagDir(DiagDirection d)
Returns the reverse direction of the given DiagDirection.
Definition of base types and functions in a cross-platform compatible way.
A number of safeguards to prevent using unsafe methods.
RoadBits
Enumeration for the road parts on a tile.
Definition: road_type.h:50
No road-part is build.
Definition: road_type.h:51
static bool MayHaveRoad(TileIndex t)
Test whether a tile can have road/tram types.
Definition: road_map.h:32
static DiagDirection GetTunnelBridgeDirection(TileIndex t)
Get the direction pointing to the other end.
static RoadBits GetCrossingRoadBits(TileIndex tile)
Get the road bits of a level crossing.
Definition: road_map.h:348
static Axis DiagDirToAxis(DiagDirection d)
Convert a DiagDirection to the axis.
static RoadTileType GetRoadTileType(TileIndex t)
Get the type of the road tile.
Definition: road_map.h:51
Tunnel entry/exit and bridge heads.
Definition: tile_type.h:50
uint32 TileIndex
The index/ID of a Tile.
Definition: tile_type.h:78
A tile of a station.
Definition: tile_type.h:46
Transport by road vehicle.
static bool IsRoadStopTile(TileIndex t)
Is tile t a road stop station?
Definition: station_map.h:213
Functions that have tunnels and bridges in common.
Northeast, upper right on your monitor.
Full road along the y-axis (north-west + south-east)
Definition: road_type.h:57
Depot (one entrance)
Definition: road_map.h:24
static RoadBits AxisToRoadBits(Axis a)
Create the road-part which belongs to the given Axis.
Definition: road_func.h:111