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612 lines
16 KiB
C++
612 lines
16 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 road_map.h Map accessors for roads. */
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#ifndef ROAD_MAP_H
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#define ROAD_MAP_H
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#include "track_func.h"
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#include "depot_type.h"
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#include "rail_type.h"
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#include "road_func.h"
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#include "tile_map.h"
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/** The different types of road tiles. */
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enum RoadTileType {
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ROAD_TILE_NORMAL, ///< Normal road
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ROAD_TILE_CROSSING, ///< Level crossing
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ROAD_TILE_DEPOT ///< Depot (one entrance)
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};
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/**
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* Get the type of the road tile.
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* @param t Tile to query.
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* @pre IsTileType(t, MP_ROAD)
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* @return The road tile type.
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*/
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static inline RoadTileType GetRoadTileType(TileIndex t)
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{
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assert(IsTileType(t, MP_ROAD));
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return (RoadTileType)GB(_m[t].m5, 6, 2);
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}
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/**
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* Return whether a tile is a normal road.
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* @param t Tile to query.
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* @pre IsTileType(t, MP_ROAD)
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* @return True if normal road.
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*/
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static inline bool IsNormalRoad(TileIndex t)
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{
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return GetRoadTileType(t) == ROAD_TILE_NORMAL;
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}
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/**
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* Return whether a tile is a normal road tile.
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* @param t Tile to query.
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* @return True if normal road tile.
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*/
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static inline bool IsNormalRoadTile(TileIndex t)
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{
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return IsTileType(t, MP_ROAD) && IsNormalRoad(t);
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}
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/**
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* Return whether a tile is a level crossing.
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* @param t Tile to query.
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* @pre IsTileType(t, MP_ROAD)
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* @return True if level crossing.
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*/
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static inline bool IsLevelCrossing(TileIndex t)
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{
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return GetRoadTileType(t) == ROAD_TILE_CROSSING;
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}
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/**
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* Return whether a tile is a level crossing tile.
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* @param t Tile to query.
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* @return True if level crossing tile.
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*/
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static inline bool IsLevelCrossingTile(TileIndex t)
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{
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return IsTileType(t, MP_ROAD) && IsLevelCrossing(t);
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}
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/**
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* Return whether a tile is a road depot.
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* @param t Tile to query.
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* @pre IsTileType(t, MP_ROAD)
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* @return True if road depot.
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*/
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static inline bool IsRoadDepot(TileIndex t)
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{
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return GetRoadTileType(t) == ROAD_TILE_DEPOT;
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}
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/**
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* Return whether a tile is a road depot tile.
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* @param t Tile to query.
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* @return True if road depot tile.
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*/
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static inline bool IsRoadDepotTile(TileIndex t)
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{
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return IsTileType(t, MP_ROAD) && IsRoadDepot(t);
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}
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/**
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* Get the present road bits for a specific road type.
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* @param t The tile to query.
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* @param rt Road type.
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* @pre IsNormalRoad(t)
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* @return The present road bits for the road type.
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*/
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static inline RoadBits GetRoadBits(TileIndex t, RoadType rt)
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{
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assert(IsNormalRoad(t));
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switch (rt) {
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default: NOT_REACHED();
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case ROADTYPE_ROAD: return (RoadBits)GB(_m[t].m5, 0, 4);
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case ROADTYPE_TRAM: return (RoadBits)GB(_m[t].m3, 0, 4);
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}
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}
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/**
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* Get all RoadBits set on a tile except from the given RoadType
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*
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* @param t The tile from which we want to get the RoadBits
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* @param rt The RoadType which we exclude from the querry
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* @return all set RoadBits of the tile which are not from the given RoadType
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*/
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static inline RoadBits GetOtherRoadBits(TileIndex t, RoadType rt)
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{
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return GetRoadBits(t, rt == ROADTYPE_ROAD ? ROADTYPE_TRAM : ROADTYPE_ROAD);
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}
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/**
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* Get all set RoadBits on the given tile
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*
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* @param tile The tile from which we want to get the RoadBits
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* @return all set RoadBits of the tile
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*/
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static inline RoadBits GetAllRoadBits(TileIndex tile)
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{
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return GetRoadBits(tile, ROADTYPE_ROAD) | GetRoadBits(tile, ROADTYPE_TRAM);
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}
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/**
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* Set the present road bits for a specific road type.
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* @param t The tile to change.
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* @param r The new road bits.
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* @param rt Road type.
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* @pre IsNormalRoad(t)
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*/
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static inline void SetRoadBits(TileIndex t, RoadBits r, RoadType rt)
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{
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assert(IsNormalRoad(t)); // XXX incomplete
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switch (rt) {
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default: NOT_REACHED();
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case ROADTYPE_ROAD: SB(_m[t].m5, 0, 4, r); break;
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case ROADTYPE_TRAM: SB(_m[t].m3, 0, 4, r); break;
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}
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}
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/**
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* Get the present road types of a tile.
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* @param t The tile to query.
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* @return Present road types.
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*/
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static inline RoadTypes GetRoadTypes(TileIndex t)
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{
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return (RoadTypes)GB(_me[t].m7, 6, 2);
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}
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/**
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* Set the present road types of a tile.
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* @param t The tile to change.
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* @param rt The new road types.
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*/
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static inline void SetRoadTypes(TileIndex t, RoadTypes rt)
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{
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assert(IsTileType(t, MP_ROAD) || IsTileType(t, MP_STATION) || IsTileType(t, MP_TUNNELBRIDGE));
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SB(_me[t].m7, 6, 2, rt);
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}
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/**
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* Check if a tile has a specific road type.
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* @param t The tile to check.
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* @param rt Road type to check.
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* @return True if the tile has the specified road type.
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*/
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static inline bool HasTileRoadType(TileIndex t, RoadType rt)
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{
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return HasBit(GetRoadTypes(t), rt);
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}
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/**
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* Get the owner of a specific road type.
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* @param t The tile to query.
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* @param rt The road type to get the owner of.
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* @return Owner of the given road type.
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*/
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static inline Owner GetRoadOwner(TileIndex t, RoadType rt)
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{
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assert(IsTileType(t, MP_ROAD) || IsTileType(t, MP_STATION) || IsTileType(t, MP_TUNNELBRIDGE));
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switch (rt) {
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default: NOT_REACHED();
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case ROADTYPE_ROAD: return (Owner)GB(IsNormalRoadTile(t) ? _m[t].m1 : _me[t].m7, 0, 5);
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case ROADTYPE_TRAM: {
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/* Trams don't need OWNER_TOWN, and remapping OWNER_NONE
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* to OWNER_TOWN makes it use one bit less */
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Owner o = (Owner)GB(_m[t].m3, 4, 4);
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return o == OWNER_TOWN ? OWNER_NONE : o;
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}
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}
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}
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/**
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* Set the owner of a specific road type.
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* @param t The tile to change.
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* @param rt The road type to change the owner of.
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* @param o New owner of the given road type.
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*/
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static inline void SetRoadOwner(TileIndex t, RoadType rt, Owner o)
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{
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switch (rt) {
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default: NOT_REACHED();
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case ROADTYPE_ROAD: SB(IsNormalRoadTile(t) ? _m[t].m1 : _me[t].m7, 0, 5, o); break;
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case ROADTYPE_TRAM: SB(_m[t].m3, 4, 4, o == OWNER_NONE ? OWNER_TOWN : o); break;
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}
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}
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/**
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* Check if a specific road type is owned by an owner.
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* @param t The tile to query.
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* @param rt The road type to compare the owner of.
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* @param o Owner to compare with.
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* @pre HasTileRoadType(t, rt)
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* @return True if the road type is owned by the given owner.
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*/
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static inline bool IsRoadOwner(TileIndex t, RoadType rt, Owner o)
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{
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assert(HasTileRoadType(t, rt));
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return (GetRoadOwner(t, rt) == o);
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}
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/**
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* Checks if given tile has town owned road
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* @param t tile to check
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* @pre IsTileType(t, MP_ROAD)
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* @return true iff tile has road and the road is owned by a town
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*/
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static inline bool HasTownOwnedRoad(TileIndex t)
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{
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return HasTileRoadType(t, ROADTYPE_ROAD) && IsRoadOwner(t, ROADTYPE_ROAD, OWNER_TOWN);
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}
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/** Which directions are disallowed ? */
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enum DisallowedRoadDirections {
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DRD_NONE, ///< None of the directions are disallowed
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DRD_SOUTHBOUND, ///< All southbound traffic is disallowed
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DRD_NORTHBOUND, ///< All northbound traffic is disallowed
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DRD_BOTH, ///< All directions are disallowed
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DRD_END
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};
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DECLARE_ENUM_AS_BIT_SET(DisallowedRoadDirections)
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/** Helper information for extract tool. */
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template <> struct EnumPropsT<DisallowedRoadDirections> : MakeEnumPropsT<DisallowedRoadDirections, byte, DRD_NONE, DRD_END, DRD_END, 2> {};
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/**
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* Gets the disallowed directions
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* @param t the tile to get the directions from
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* @return the disallowed directions
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*/
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static inline DisallowedRoadDirections GetDisallowedRoadDirections(TileIndex t)
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{
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assert(IsNormalRoad(t));
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return (DisallowedRoadDirections)GB(_m[t].m5, 4, 2);
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}
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/**
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* Sets the disallowed directions
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* @param t the tile to set the directions for
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* @param drd the disallowed directions
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*/
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static inline void SetDisallowedRoadDirections(TileIndex t, DisallowedRoadDirections drd)
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{
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assert(IsNormalRoad(t));
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assert(drd < DRD_END);
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SB(_m[t].m5, 4, 2, drd);
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}
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/**
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* Get the road axis of a level crossing.
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* @param t The tile to query.
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* @pre IsLevelCrossing(t)
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* @return The axis of the road.
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*/
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static inline Axis GetCrossingRoadAxis(TileIndex t)
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{
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assert(IsLevelCrossing(t));
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return (Axis)GB(_m[t].m5, 0, 1);
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}
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/**
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* Get the rail axis of a level crossing.
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* @param t The tile to query.
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* @pre IsLevelCrossing(t)
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* @return The axis of the rail.
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*/
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static inline Axis GetCrossingRailAxis(TileIndex t)
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{
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assert(IsLevelCrossing(t));
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return OtherAxis((Axis)GetCrossingRoadAxis(t));
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}
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/**
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* Get the road bits of a level crossing.
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* @param tile The tile to query.
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* @return The present road bits.
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*/
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static inline RoadBits GetCrossingRoadBits(TileIndex tile)
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{
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return GetCrossingRoadAxis(tile) == AXIS_X ? ROAD_X : ROAD_Y;
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}
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/**
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* Get the rail track of a level crossing.
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* @param tile The tile to query.
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* @return The rail track.
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*/
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static inline Track GetCrossingRailTrack(TileIndex tile)
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{
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return AxisToTrack(GetCrossingRailAxis(tile));
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}
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/**
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* Get the rail track bits of a level crossing.
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* @param tile The tile to query.
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* @return The rail track bits.
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*/
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static inline TrackBits GetCrossingRailBits(TileIndex tile)
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{
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return AxisToTrackBits(GetCrossingRailAxis(tile));
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}
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/**
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* Get the reservation state of the rail crossing
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* @param t the crossing tile
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* @return reservation state
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* @pre IsLevelCrossingTile(t)
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*/
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static inline bool HasCrossingReservation(TileIndex t)
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{
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assert(IsLevelCrossingTile(t));
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return HasBit(_m[t].m5, 4);
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}
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/**
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* Set the reservation state of the rail crossing
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* @note Works for both waypoints and rail depots
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* @param t the crossing tile
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* @param b the reservation state
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* @pre IsLevelCrossingTile(t)
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*/
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static inline void SetCrossingReservation(TileIndex t, bool b)
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{
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assert(IsLevelCrossingTile(t));
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SB(_m[t].m5, 4, 1, b ? 1 : 0);
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}
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/**
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* Get the reserved track bits for a rail crossing
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* @param t the tile
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* @pre IsLevelCrossingTile(t)
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* @return reserved track bits
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*/
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static inline TrackBits GetCrossingReservationTrackBits(TileIndex t)
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{
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return HasCrossingReservation(t) ? GetCrossingRailBits(t) : TRACK_BIT_NONE;
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}
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/**
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* Check if the level crossing is barred.
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* @param t The tile to query.
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* @pre IsLevelCrossing(t)
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* @return True if the level crossing is barred.
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*/
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static inline bool IsCrossingBarred(TileIndex t)
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{
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assert(IsLevelCrossing(t));
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return HasBit(_m[t].m5, 5);
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}
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/**
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* Set the bar state of a level crossing.
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* @param t The tile to modify.
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* @param barred True if the crossing should be barred, false otherwise.
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* @pre IsLevelCrossing(t)
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*/
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static inline void SetCrossingBarred(TileIndex t, bool barred)
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{
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assert(IsLevelCrossing(t));
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SB(_m[t].m5, 5, 1, barred ? 1 : 0);
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}
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/**
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* Unbar a level crossing.
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* @param t The tile to change.
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*/
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static inline void UnbarCrossing(TileIndex t)
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{
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SetCrossingBarred(t, false);
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}
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/**
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* Bar a level crossing.
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* @param t The tile to change.
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*/
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static inline void BarCrossing(TileIndex t)
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{
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SetCrossingBarred(t, true);
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}
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/** Check if a road tile has snow/desert. */
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#define IsOnDesert IsOnSnow
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/**
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* Check if a road tile has snow/desert.
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* @param t The tile to query.
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* @return True if the tile has snow/desert.
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*/
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static inline bool IsOnSnow(TileIndex t)
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{
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return HasBit(_me[t].m7, 5);
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}
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/** Toggle the snow/desert state of a road tile. */
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#define ToggleDesert ToggleSnow
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/**
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* Toggle the snow/desert state of a road tile.
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* @param t The tile to change.
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*/
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static inline void ToggleSnow(TileIndex t)
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{
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ToggleBit(_me[t].m7, 5);
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}
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/** The possible road side decorations. */
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enum Roadside {
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ROADSIDE_BARREN = 0, ///< Road on barren land
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ROADSIDE_GRASS = 1, ///< Road on grass
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ROADSIDE_PAVED = 2, ///< Road with paved sidewalks
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ROADSIDE_STREET_LIGHTS = 3, ///< Road with street lights on paved sidewalks
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ROADSIDE_TREES = 5, ///< Road with trees on paved sidewalks
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ROADSIDE_GRASS_ROAD_WORKS = 6, ///< Road on grass with road works
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ROADSIDE_PAVED_ROAD_WORKS = 7 ///< Road with sidewalks and road works
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};
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/**
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* Get the decorations of a road.
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* @param tile The tile to query.
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* @return The road decoration of the tile.
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*/
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static inline Roadside GetRoadside(TileIndex tile)
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{
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return (Roadside)GB(_m[tile].m6, 3, 3);
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}
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/**
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* Set the decorations of a road.
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* @param tile The tile to change.
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* @param s The new road decoration of the tile.
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*/
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static inline void SetRoadside(TileIndex tile, Roadside s)
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{
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SB(_m[tile].m6, 3, 3, s);
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}
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/**
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* Check if a tile has road works.
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* @param t The tile to check.
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* @return True if the tile has road works in progress.
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*/
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static inline bool HasRoadWorks(TileIndex t)
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{
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return GetRoadside(t) >= ROADSIDE_GRASS_ROAD_WORKS;
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}
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/**
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* Increase the progress counter of road works.
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* @param t The tile to modify.
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* @return True if the road works are in the last stage.
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*/
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static inline bool IncreaseRoadWorksCounter(TileIndex t)
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{
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AB(_me[t].m7, 0, 4, 1);
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return GB(_me[t].m7, 0, 4) == 15;
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}
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/**
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* Start road works on a tile.
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* @param t The tile to start the work on.
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* @pre !HasRoadWorks(t)
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*/
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static inline void StartRoadWorks(TileIndex t)
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{
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assert(!HasRoadWorks(t));
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/* Remove any trees or lamps in case or roadwork */
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switch (GetRoadside(t)) {
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case ROADSIDE_BARREN:
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case ROADSIDE_GRASS: SetRoadside(t, ROADSIDE_GRASS_ROAD_WORKS); break;
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default: SetRoadside(t, ROADSIDE_PAVED_ROAD_WORKS); break;
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}
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}
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/**
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* Terminate road works on a tile.
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* @param t Tile to stop the road works on.
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* @pre HasRoadWorks(t)
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*/
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static inline void TerminateRoadWorks(TileIndex t)
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{
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assert(HasRoadWorks(t));
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SetRoadside(t, (Roadside)(GetRoadside(t) - ROADSIDE_GRASS_ROAD_WORKS + ROADSIDE_GRASS));
|
|
/* Stop the counter */
|
|
SB(_me[t].m7, 0, 4, 0);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the direction of the exit of a road depot.
|
|
* @param t The tile to query.
|
|
* @return Diagonal direction of the depot exit.
|
|
*/
|
|
static inline DiagDirection GetRoadDepotDirection(TileIndex t)
|
|
{
|
|
assert(IsRoadDepot(t));
|
|
return (DiagDirection)GB(_m[t].m5, 0, 2);
|
|
}
|
|
|
|
|
|
RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt, bool straight_tunnel_bridge_entrance = false);
|
|
|
|
|
|
/**
|
|
* Make a normal road tile.
|
|
* @param t Tile to make a normal road.
|
|
* @param bits Road bits to set for all present road types.
|
|
* @param rot New present road types.
|
|
* @param town Town ID if the road is a town-owned road.
|
|
* @param road New owner of road.
|
|
* @param tram New owner of tram tracks.
|
|
*/
|
|
static inline void MakeRoadNormal(TileIndex t, RoadBits bits, RoadTypes rot, TownID town, Owner road, Owner tram)
|
|
{
|
|
SetTileType(t, MP_ROAD);
|
|
SetTileOwner(t, road);
|
|
_m[t].m2 = town;
|
|
_m[t].m3 = (HasBit(rot, ROADTYPE_TRAM) ? bits : 0);
|
|
_m[t].m4 = 0;
|
|
_m[t].m5 = (HasBit(rot, ROADTYPE_ROAD) ? bits : 0) | ROAD_TILE_NORMAL << 6;
|
|
SB(_m[t].m6, 2, 4, 0);
|
|
_me[t].m7 = rot << 6;
|
|
SetRoadOwner(t, ROADTYPE_TRAM, tram);
|
|
}
|
|
|
|
/**
|
|
* Make a level crossing.
|
|
* @param t Tile to make a level crossing.
|
|
* @param road New owner of road.
|
|
* @param tram New owner of tram tracks.
|
|
* @param rail New owner of the rail track.
|
|
* @param roaddir Axis of the road.
|
|
* @param rat New rail type.
|
|
* @param rot New present road types.
|
|
* @param town Town ID if the road is a town-owned road.
|
|
*/
|
|
static inline void MakeRoadCrossing(TileIndex t, Owner road, Owner tram, Owner rail, Axis roaddir, RailType rat, RoadTypes rot, uint town)
|
|
{
|
|
SetTileType(t, MP_ROAD);
|
|
SetTileOwner(t, rail);
|
|
_m[t].m2 = town;
|
|
_m[t].m3 = rat;
|
|
_m[t].m4 = 0;
|
|
_m[t].m5 = ROAD_TILE_CROSSING << 6 | roaddir;
|
|
SB(_m[t].m6, 2, 4, 0);
|
|
_me[t].m7 = rot << 6 | road;
|
|
SetRoadOwner(t, ROADTYPE_TRAM, tram);
|
|
}
|
|
|
|
/**
|
|
* Make a road depot.
|
|
* @param t Tile to make a level crossing.
|
|
* @param owner New owner of the depot.
|
|
* @param did New depot ID.
|
|
* @param dir Direction of the depot exit.
|
|
* @param rt Road type of the depot.
|
|
*/
|
|
static inline void MakeRoadDepot(TileIndex t, Owner owner, DepotID did, DiagDirection dir, RoadType rt)
|
|
{
|
|
SetTileType(t, MP_ROAD);
|
|
SetTileOwner(t, owner);
|
|
_m[t].m2 = did;
|
|
_m[t].m3 = 0;
|
|
_m[t].m4 = 0;
|
|
_m[t].m5 = ROAD_TILE_DEPOT << 6 | dir;
|
|
SB(_m[t].m6, 2, 4, 0);
|
|
_me[t].m7 = RoadTypeToRoadTypes(rt) << 6 | owner;
|
|
SetRoadOwner(t, ROADTYPE_TRAM, owner);
|
|
}
|
|
|
|
#endif /* ROAD_MAP_H */
|