mirror of https://github.com/OpenTTD/OpenTTD.git
710 lines
17 KiB
C
710 lines
17 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 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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#include "road_type.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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* Test whether a tile can have road/tram types.
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* @param t Tile to query.
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* @return true if tile can be queried about road/tram types.
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*/
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inline bool MayHaveRoad(Tile t)
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{
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switch (GetTileType(t)) {
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case MP_ROAD:
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case MP_STATION:
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case MP_TUNNELBRIDGE:
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return true;
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default:
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return false;
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}
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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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debug_inline static RoadTileType GetRoadTileType(Tile t)
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{
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assert(IsTileType(t, MP_ROAD));
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return (RoadTileType)GB(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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debug_inline static bool IsNormalRoad(Tile 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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debug_inline static bool IsNormalRoadTile(Tile 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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inline bool IsLevelCrossing(Tile 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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inline bool IsLevelCrossingTile(Tile 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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debug_inline static bool IsRoadDepot(Tile 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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debug_inline static bool IsRoadDepotTile(Tile 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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inline RoadBits GetRoadBits(Tile t, RoadTramType rtt)
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{
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assert(IsNormalRoad(t));
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if (rtt == RTT_TRAM) return (RoadBits)GB(t.m3(), 0, 4);
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return (RoadBits)GB(t.m5(), 0, 4);
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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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inline RoadBits GetAllRoadBits(Tile tile)
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{
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return GetRoadBits(tile, RTT_ROAD) | GetRoadBits(tile, RTT_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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inline void SetRoadBits(Tile t, RoadBits r, RoadTramType rtt)
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{
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assert(IsNormalRoad(t)); // XXX incomplete
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if (rtt == RTT_TRAM) {
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SB(t.m3(), 0, 4, r);
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} else {
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SB(t.m5(), 0, 4, r);
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}
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}
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inline RoadType GetRoadTypeRoad(Tile t)
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{
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assert(MayHaveRoad(t));
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return (RoadType)GB(t.m4(), 0, 6);
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}
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inline RoadType GetRoadTypeTram(Tile t)
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{
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assert(MayHaveRoad(t));
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return (RoadType)GB(t.m8(), 6, 6);
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}
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inline RoadType GetRoadType(Tile t, RoadTramType rtt)
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{
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return (rtt == RTT_TRAM) ? GetRoadTypeTram(t) : GetRoadTypeRoad(t);
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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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inline RoadTypes GetPresentRoadTypes(Tile t)
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{
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RoadTypes result = ROADTYPES_NONE;
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if (MayHaveRoad(t)) {
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if (GetRoadTypeRoad(t) != INVALID_ROADTYPE) SetBit(result, GetRoadTypeRoad(t));
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if (GetRoadTypeTram(t) != INVALID_ROADTYPE) SetBit(result, GetRoadTypeTram(t));
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}
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return result;
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}
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inline bool HasRoadTypeRoad(Tile t)
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{
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return GetRoadTypeRoad(t) != INVALID_ROADTYPE;
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}
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inline bool HasRoadTypeTram(Tile t)
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{
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return GetRoadTypeTram(t) != INVALID_ROADTYPE;
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}
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/**
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* Check if a tile has a road or a tram road type.
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* @param t The tile to check.
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* @param tram True to check tram, false to check road.
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* @return True if the tile has the specified road type.
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*/
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inline bool HasTileRoadType(Tile t, RoadTramType rtt)
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{
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return GetRoadType(t, rtt) != INVALID_ROADTYPE;
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}
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/**
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* Check if a tile has one of the specified road types.
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* @param t The tile to check.
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* @param rts Allowed road types.
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* @return True if the tile has one of the specified road types.
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*/
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inline bool HasTileAnyRoadType(Tile t, RoadTypes rts)
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{
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if (!MayHaveRoad(t)) return false;
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return (GetPresentRoadTypes(t) & rts);
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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 rtt RoadTramType.
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* @return Owner of the given road type.
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*/
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inline Owner GetRoadOwner(Tile t, RoadTramType rtt)
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{
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assert(MayHaveRoad(t));
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if (rtt == RTT_ROAD) return (Owner)GB(IsNormalRoadTile(t) ? t.m1() : t.m7(), 0, 5);
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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(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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* Set the owner of a specific road type.
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* @param t The tile to change.
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* @param rtt RoadTramType.
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* @param o New owner of the given road type.
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*/
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inline void SetRoadOwner(Tile t, RoadTramType rtt, Owner o)
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{
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if (rtt == RTT_ROAD) {
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SB(IsNormalRoadTile(t) ? t.m1() : t.m7(), 0, 5, o);
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} else {
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SB(t.m3(), 4, 4, o == OWNER_NONE ? OWNER_TOWN : o);
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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 tram True to check tram, false to check road.
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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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inline bool IsRoadOwner(Tile t, RoadTramType rtt, Owner o)
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{
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assert(HasTileRoadType(t, rtt));
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return (GetRoadOwner(t, rtt) == 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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inline bool HasTownOwnedRoad(Tile t)
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{
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return HasTileRoadType(t, RTT_ROAD) && IsRoadOwner(t, RTT_ROAD, OWNER_TOWN);
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}
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/**
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* Checks if a DisallowedRoadDirections is valid.
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*
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* @param wc The value to check
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* @return true if the given value is a valid DisallowedRoadDirections.
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*/
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inline bool IsValidDisallowedRoadDirections(DisallowedRoadDirections drt)
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{
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return drt < DRD_END;
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}
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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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inline DisallowedRoadDirections GetDisallowedRoadDirections(Tile t)
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{
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assert(IsNormalRoad(t));
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return (DisallowedRoadDirections)GB(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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inline void SetDisallowedRoadDirections(Tile 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(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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inline Axis GetCrossingRoadAxis(Tile t)
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{
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assert(IsLevelCrossing(t));
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return (Axis)GB(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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inline Axis GetCrossingRailAxis(Tile 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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inline RoadBits GetCrossingRoadBits(Tile 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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inline Track GetCrossingRailTrack(Tile 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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inline TrackBits GetCrossingRailBits(Tile 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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inline bool HasCrossingReservation(Tile t)
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{
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assert(IsLevelCrossingTile(t));
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return HasBit(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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inline void SetCrossingReservation(Tile t, bool b)
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{
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assert(IsLevelCrossingTile(t));
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SB(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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inline TrackBits GetCrossingReservationTrackBits(Tile 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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inline bool IsCrossingBarred(Tile t)
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{
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assert(IsLevelCrossing(t));
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return HasBit(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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inline void SetCrossingBarred(Tile t, bool barred)
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{
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assert(IsLevelCrossing(t));
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SB(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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inline void UnbarCrossing(Tile 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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inline void BarCrossing(Tile 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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inline bool IsOnSnow(Tile t)
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{
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return HasBit(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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inline void ToggleSnow(Tile t)
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{
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ToggleBit(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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// 4 is unused for historical reasons
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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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inline Roadside GetRoadside(Tile tile)
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{
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return (Roadside)GB(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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inline void SetRoadside(Tile tile, Roadside s)
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{
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SB(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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inline bool HasRoadWorks(Tile 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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inline bool IncreaseRoadWorksCounter(Tile t)
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{
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AB(t.m7(), 0, 4, 1);
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return GB(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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inline void StartRoadWorks(Tile 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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Terminate road works on a tile.
|
|
* @param t Tile to stop the road works on.
|
|
* @pre HasRoadWorks(t)
|
|
*/
|
|
inline void TerminateRoadWorks(Tile t)
|
|
{
|
|
assert(HasRoadWorks(t));
|
|
SetRoadside(t, (Roadside)(GetRoadside(t) - ROADSIDE_GRASS_ROAD_WORKS + ROADSIDE_GRASS));
|
|
/* Stop the counter */
|
|
SB(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.
|
|
*/
|
|
inline DiagDirection GetRoadDepotDirection(Tile t)
|
|
{
|
|
assert(IsRoadDepot(t));
|
|
return (DiagDirection)GB(t.m5(), 0, 2);
|
|
}
|
|
|
|
|
|
RoadBits GetAnyRoadBits(Tile tile, RoadTramType rtt, bool straight_tunnel_bridge_entrance = false);
|
|
|
|
/**
|
|
* Set the road road type of a tile.
|
|
* @param t The tile to change.
|
|
* @param rt The road type to set.
|
|
*/
|
|
inline void SetRoadTypeRoad(Tile t, RoadType rt)
|
|
{
|
|
assert(MayHaveRoad(t));
|
|
assert(rt == INVALID_ROADTYPE || RoadTypeIsRoad(rt));
|
|
SB(t.m4(), 0, 6, rt);
|
|
}
|
|
|
|
/**
|
|
* Set the tram road type of a tile.
|
|
* @param t The tile to change.
|
|
* @param rt The road type to set.
|
|
*/
|
|
inline void SetRoadTypeTram(Tile t, RoadType rt)
|
|
{
|
|
assert(MayHaveRoad(t));
|
|
assert(rt == INVALID_ROADTYPE || RoadTypeIsTram(rt));
|
|
SB(t.m8(), 6, 6, rt);
|
|
}
|
|
|
|
/**
|
|
* Set the road type of a tile.
|
|
* @param t The tile to change.
|
|
* @param rtt Set road or tram type.
|
|
* @param rt The road type to set.
|
|
*/
|
|
inline void SetRoadType(Tile t, RoadTramType rtt, RoadType rt)
|
|
{
|
|
if (rtt == RTT_TRAM) {
|
|
SetRoadTypeTram(t, rt);
|
|
} else {
|
|
SetRoadTypeRoad(t, rt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the present road types of a tile.
|
|
* @param t The tile to change.
|
|
* @param road_rt The road roadtype to set for the tile.
|
|
* @param tram_rt The tram roadtype to set for the tile.
|
|
*/
|
|
inline void SetRoadTypes(Tile t, RoadType road_rt, RoadType tram_rt)
|
|
{
|
|
SetRoadTypeRoad(t, road_rt);
|
|
SetRoadTypeTram(t, tram_rt);
|
|
}
|
|
|
|
/**
|
|
* 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 road_rt The road roadtype to set for the tile.
|
|
* @param tram_rt The tram roadtype to set for the tile.
|
|
* @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.
|
|
*/
|
|
inline void MakeRoadNormal(Tile t, RoadBits bits, RoadType road_rt, RoadType tram_rt, TownID town, Owner road, Owner tram)
|
|
{
|
|
SetTileType(t, MP_ROAD);
|
|
SetTileOwner(t, road);
|
|
t.m2() = town;
|
|
t.m3() = (tram_rt != INVALID_ROADTYPE ? bits : 0);
|
|
t.m5() = (road_rt != INVALID_ROADTYPE ? bits : 0) | ROAD_TILE_NORMAL << 6;
|
|
SB(t.m6(), 2, 4, 0);
|
|
t.m7() = 0;
|
|
SetRoadTypes(t, road_rt, tram_rt);
|
|
SetRoadOwner(t, RTT_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 road_rt The road roadtype to set for the tile.
|
|
* @param tram_rt The tram roadtype to set for the tile.
|
|
* @param town Town ID if the road is a town-owned road.
|
|
*/
|
|
inline void MakeRoadCrossing(Tile t, Owner road, Owner tram, Owner rail, Axis roaddir, RailType rat, RoadType road_rt, RoadType tram_rt, uint town)
|
|
{
|
|
SetTileType(t, MP_ROAD);
|
|
SetTileOwner(t, rail);
|
|
t.m2() = town;
|
|
t.m3() = 0;
|
|
t.m4() = INVALID_ROADTYPE;
|
|
t.m5() = ROAD_TILE_CROSSING << 6 | roaddir;
|
|
SB(t.m6(), 2, 4, 0);
|
|
t.m7() = road;
|
|
t.m8() = INVALID_ROADTYPE << 6 | rat;
|
|
SetRoadTypes(t, road_rt, tram_rt);
|
|
SetRoadOwner(t, RTT_TRAM, tram);
|
|
}
|
|
|
|
/**
|
|
* Sets the exit direction of a road depot.
|
|
* @param tile Tile of the depot.
|
|
* @param dir Direction of the depot exit.
|
|
*/
|
|
inline void SetRoadDepotExitDirection(Tile tile, DiagDirection dir)
|
|
{
|
|
assert(IsRoadDepotTile(tile));
|
|
SB(tile.m5(), 0, 2, dir);
|
|
}
|
|
|
|
/**
|
|
* Make a road depot.
|
|
* @param tile Tile to make a depot on.
|
|
* @param owner New owner of the depot.
|
|
* @param depot_id New depot ID.
|
|
* @param dir Direction of the depot exit.
|
|
* @param rt Road type of the depot.
|
|
*/
|
|
inline void MakeRoadDepot(Tile tile, Owner owner, DepotID depot_id, DiagDirection dir, RoadType rt)
|
|
{
|
|
SetTileType(tile, MP_ROAD);
|
|
SetTileOwner(tile, owner);
|
|
tile.m2() = depot_id;
|
|
tile.m3() = 0;
|
|
tile.m4() = INVALID_ROADTYPE;
|
|
tile.m5() = ROAD_TILE_DEPOT << 6 | dir;
|
|
SB(tile.m6(), 2, 4, 0);
|
|
tile.m7() = owner;
|
|
tile.m8() = INVALID_ROADTYPE << 6;
|
|
SetRoadType(tile, GetRoadTramType(rt), rt);
|
|
SetRoadOwner(tile, RTT_TRAM, owner);
|
|
}
|
|
|
|
#endif /* ROAD_MAP_H */
|