86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file tunnel_map.h Map accessors for tunnels. */
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#ifndef TUNNEL_MAP_H
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#define TUNNEL_MAP_H
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#include "road_map.h"
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/**
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* Is this a tunnel (entrance)?
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* @param t the tile that might be a tunnel
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* @pre IsTileType(t, MP_TUNNELBRIDGE)
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* @return true if and only if this tile is a tunnel (entrance)
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*/
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static inline bool IsTunnel(TileIndex t)
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{
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assert(IsTileType(t, MP_TUNNELBRIDGE));
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return !HasBit(_m[t].m5, 7);
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}
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/**
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* Is this a tunnel (entrance)?
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* @param t the tile that might be a tunnel
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* @return true if and only if this tile is a tunnel (entrance)
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*/
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static inline bool IsTunnelTile(TileIndex t)
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{
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return IsTileType(t, MP_TUNNELBRIDGE) && IsTunnel(t);
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}
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TileIndex GetOtherTunnelEnd(TileIndex);
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bool IsTunnelInWay(TileIndex, uint z);
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bool IsTunnelInWayDir(TileIndex tile, uint z, DiagDirection dir);
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/**
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* Makes a road tunnel entrance
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* @param t the entrance of the tunnel
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* @param o the owner of the entrance
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* @param d the direction facing out of the tunnel
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* @param r the road type used in the tunnel
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*/
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static inline void MakeRoadTunnel(TileIndex t, Owner o, DiagDirection d, RoadTypes r)
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{
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SetTileType(t, MP_TUNNELBRIDGE);
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SetTileOwner(t, o);
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_m[t].m2 = 0;
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_m[t].m3 = 0;
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_m[t].m4 = 0;
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_m[t].m5 = TRANSPORT_ROAD << 2 | d;
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SB(_m[t].m6, 2, 4, 0);
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_me[t].m7 = 0;
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SetRoadOwner(t, ROADTYPE_ROAD, o);
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if (o != OWNER_TOWN) SetRoadOwner(t, ROADTYPE_TRAM, o);
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SetRoadTypes(t, r);
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}
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/**
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* Makes a rail tunnel entrance
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* @param t the entrance of the tunnel
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* @param o the owner of the entrance
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* @param d the direction facing out of the tunnel
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* @param r the rail type used in the tunnel
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*/
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static inline void MakeRailTunnel(TileIndex t, Owner o, DiagDirection d, RailType r)
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{
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SetTileType(t, MP_TUNNELBRIDGE);
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SetTileOwner(t, o);
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_m[t].m2 = 0;
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_m[t].m3 = r;
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_m[t].m4 = 0;
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_m[t].m5 = TRANSPORT_RAIL << 2 | d;
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SB(_m[t].m6, 2, 4, 0);
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_me[t].m7 = 0;
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}
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#endif /* TUNNEL_MAP_H */
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