OpenTTD
tunnel_map.h
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1 /* $Id: tunnel_map.h 26878 2014-09-21 11:23:33Z rubidium $ */
2 
3 /*
4  * This file is part of OpenTTD.
5  * 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.
6  * 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.
7  * 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/>.
8  */
9 
12 #ifndef TUNNEL_MAP_H
13 #define TUNNEL_MAP_H
14 
15 #include "road_map.h"
16 
17 
24 static inline bool IsTunnel(TileIndex t)
25 {
26  assert(IsTileType(t, MP_TUNNELBRIDGE));
27  return !HasBit(_m[t].m5, 7);
28 }
29 
35 static inline bool IsTunnelTile(TileIndex t)
36 {
37  return IsTileType(t, MP_TUNNELBRIDGE) && IsTunnel(t);
38 }
39 
41 bool IsTunnelInWay(TileIndex, int z);
42 bool IsTunnelInWayDir(TileIndex tile, int z, DiagDirection dir);
43 
51 static inline void MakeRoadTunnel(TileIndex t, Owner o, DiagDirection d, RoadTypes r)
52 {
54  SetTileOwner(t, o);
55  _m[t].m2 = 0;
56  _m[t].m3 = 0;
57  _m[t].m4 = 0;
58  _m[t].m5 = TRANSPORT_ROAD << 2 | d;
59  SB(_me[t].m6, 2, 4, 0);
60  _me[t].m7 = 0;
62  if (o != OWNER_TOWN) SetRoadOwner(t, ROADTYPE_TRAM, o);
63  SetRoadTypes(t, r);
64 }
65 
73 static inline void MakeRailTunnel(TileIndex t, Owner o, DiagDirection d, RailType r)
74 {
76  SetTileOwner(t, o);
77  _m[t].m2 = 0;
78  _m[t].m3 = r;
79  _m[t].m4 = 0;
80  _m[t].m5 = TRANSPORT_RAIL << 2 | d;
81  SB(_me[t].m6, 2, 4, 0);
82  _me[t].m7 = 0;
83 }
84 
85 #endif /* TUNNEL_MAP_H */
static void SetTileOwner(TileIndex tile, Owner owner)
Sets the owner of a tile.
Definition: tile_map.h:191
RailType
Enumeration for all possible railtypes.
Definition: rail_type.h:29
Basic road type.
Definition: road_type.h:24
byte m7
Primarily used for newgrf support.
Definition: map_type.h:37
Map accessors for roads.
uint16 m2
Primarily used for indices to towns, industries and stations.
Definition: map_type.h:22
Tile * _m
Tiles of the map.
Definition: map.cpp:32
static void MakeRailTunnel(TileIndex t, Owner o, DiagDirection d, RailType r)
Makes a rail tunnel entrance.
Definition: tunnel_map.h:73
static T SB(T &x, const uint8 s, const uint8 n, const U d)
Set n bits in x starting at bit s to d.
static bool IsTileType(TileIndex tile, TileType type)
Checks if a tile is a give tiletype.
Definition: tile_map.h:143
static void SetRoadOwner(TileIndex t, RoadType rt, Owner o)
Set the owner of a specific road type.
Definition: road_map.h:220
Trams.
Definition: road_type.h:25
TileExtended * _me
Extended Tiles of the map.
Definition: map.cpp:33
byte m5
General purpose.
Definition: map_type.h:26
DiagDirection
Enumeration for diagonal directions.
bool IsTunnelInWay(TileIndex, int z)
Is there a tunnel in the way in any direction?
Definition: tunnel_map.cpp:70
RoadTypes
The different roadtypes we support, but then a bitmask of them.
Definition: road_type.h:36
Transport by train.
bool IsTunnelInWayDir(TileIndex tile, int z, DiagDirection dir)
Is there a tunnel in the way in the given direction?
Definition: tunnel_map.cpp:50
static void MakeRoadTunnel(TileIndex t, Owner o, DiagDirection d, RoadTypes r)
Makes a road tunnel entrance.
Definition: tunnel_map.h:51
Tunnel entry/exit and bridge heads.
Definition: tile_type.h:52
uint32 TileIndex
The index/ID of a Tile.
Definition: tile_type.h:80
A town owns the tile, or a town is expanding.
Definition: company_type.h:26
static void SetTileType(TileIndex tile, TileType type)
Set the type of a tile.
Definition: tile_map.h:124
Transport by road vehicle.
static bool IsTunnelTile(TileIndex t)
Is this a tunnel (entrance)?
Definition: tunnel_map.h:35
static bool HasBit(const T x, const uint8 y)
Checks if a bit in a value is set.
Owner
Enum for all companies/owners.
Definition: company_type.h:20
TileIndex GetOtherTunnelEnd(TileIndex)
Gets the other end of the tunnel.
Definition: tunnel_map.cpp:24
static void SetRoadTypes(TileIndex t, RoadTypes rt)
Set the present road types of a tile.
Definition: road_map.h:176
byte m3
General purpose.
Definition: map_type.h:24
static bool IsTunnel(TileIndex t)
Is this a tunnel (entrance)?
Definition: tunnel_map.h:24
byte m4
General purpose.
Definition: map_type.h:25