mirror of https://github.com/OpenTTD/OpenTTD.git
89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*
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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 "rail_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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inline bool IsTunnel(Tile t)
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{
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assert(IsTileType(t, MP_TUNNELBRIDGE));
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return !HasBit(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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inline bool IsTunnelTile(Tile 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, int z);
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bool IsTunnelInWayDir(TileIndex tile, int 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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inline void MakeRoadTunnel(Tile t, Owner o, DiagDirection d, RoadType road_rt, RoadType tram_rt)
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{
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SetTileType(t, MP_TUNNELBRIDGE);
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SetTileOwner(t, o);
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t.m2() = 0;
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t.m3() = 0;
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t.m4() = 0;
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t.m5() = TRANSPORT_ROAD << 2 | d;
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SB(t.m6(), 2, 4, 0);
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t.m7() = 0;
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t.m8() = 0;
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SetRoadOwner(t, RTT_ROAD, o);
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if (o != OWNER_TOWN) SetRoadOwner(t, RTT_TRAM, o);
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SetRoadTypes(t, road_rt, tram_rt);
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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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inline void MakeRailTunnel(Tile 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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t.m2() = 0;
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t.m3() = 0;
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t.m4() = 0;
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t.m5() = TRANSPORT_RAIL << 2 | d;
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SB(t.m6(), 2, 4, 0);
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t.m7() = 0;
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t.m8() = 0;
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SetRailType(t, r);
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SetRoadTypes(t, INVALID_ROADTYPE, INVALID_ROADTYPE);
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}
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#endif /* TUNNEL_MAP_H */
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