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/* $Id$ */
/** @file road_map.h */
#ifndef ROAD_MAP_H
#define ROAD_MAP_H
#include "macros.h"
#include "rail.h"
#include "road.h"
#include "tile.h"
enum RoadTileType {
ROAD_TILE_NORMAL,
ROAD_TILE_CROSSING,
ROAD_TILE_DEPOT
};
static inline RoadTileType GetRoadTileType(TileIndex t)
{
assert(IsTileType(t, MP_STREET));
return (RoadTileType)GB(_m[t].m5, 4, 4);
}
static inline bool IsLevelCrossing(TileIndex t)
{
return GetRoadTileType(t) == ROAD_TILE_CROSSING;
}
static inline bool IsLevelCrossingTile(TileIndex t)
{
return IsTileType(t, MP_STREET) && IsLevelCrossing(t);
}
static inline RoadBits GetRoadBits(TileIndex t)
{
assert(GetRoadTileType(t) == ROAD_TILE_NORMAL);
return (RoadBits)GB(_m[t].m5, 0, 4);
}
static inline void SetRoadBits(TileIndex t, RoadBits r)
{
assert(GetRoadTileType(t) == ROAD_TILE_NORMAL); // XXX incomplete
SB(_m[t].m5, 0, 4, r);
}
static inline Axis GetCrossingRoadAxis(TileIndex t)
{
assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
return (Axis)GB(_m[t].m5, 3, 1);
}
static inline RoadBits GetCrossingRoadBits(TileIndex tile)
{
return GetCrossingRoadAxis(tile) == AXIS_X ? ROAD_X : ROAD_Y;
}
static inline TrackBits GetCrossingRailBits(TileIndex tile)
{
return AxisToTrackBits(OtherAxis(GetCrossingRoadAxis(tile)));
}
// TODO swap owner of road and rail
static inline Owner GetCrossingRoadOwner(TileIndex t)
{
assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
return (Owner)_m[t].m4;
}
static inline void SetCrossingRoadOwner(TileIndex t, Owner o)
{
assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
_m[t].m4 = o;
}
static inline void UnbarCrossing(TileIndex t)
{
assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
CLRBIT(_m[t].m5, 2);
}
static inline void BarCrossing(TileIndex t)
{
assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
SETBIT(_m[t].m5, 2);
}
static inline bool IsCrossingBarred(TileIndex t)
{
assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
return HASBIT(_m[t].m5, 2);
}
#define IsOnDesert IsOnSnow
static inline bool IsOnSnow(TileIndex t)
{
return HASBIT(_m[t].m3, 7);
}
#define ToggleDesert ToggleSnow
static inline void ToggleSnow(TileIndex t)
{
TOGGLEBIT(_m[t].m3, 7);
}
enum Roadside {
ROADSIDE_BARREN = 0,
ROADSIDE_GRASS = 1,
ROADSIDE_PAVED = 2,
ROADSIDE_STREET_LIGHTS = 3,
ROADSIDE_TREES = 5,
ROADSIDE_GRASS_ROAD_WORKS = 6,
ROADSIDE_PAVED_ROAD_WORKS = 7
};
static inline Roadside GetRoadside(TileIndex tile)
{
return (Roadside)GB(_m[tile].m3, 4, 3);
}
static inline void SetRoadside(TileIndex tile, Roadside s)
{
SB(_m[tile].m3, 4, 3, s);
}
static inline bool HasRoadWorks(TileIndex t)
{
return GetRoadside(t) >= ROADSIDE_GRASS_ROAD_WORKS;
}
static inline bool IncreaseRoadWorksCounter(TileIndex t)
{
AB(_m[t].m3, 0, 4, 1);
return GB(_m[t].m3, 0, 4) == 15;
}
static inline void StartRoadWorks(TileIndex t)
{
assert(!HasRoadWorks(t));
/* Remove any trees or lamps in case or roadwork */
switch (GetRoadside(t)) {
case ROADSIDE_BARREN:
case ROADSIDE_GRASS: SetRoadside(t, ROADSIDE_GRASS_ROAD_WORKS); break;
default: SetRoadside(t, ROADSIDE_PAVED_ROAD_WORKS); break;
}
}
static inline void TerminateRoadWorks(TileIndex t)
{
assert(HasRoadWorks(t));
SetRoadside(t, (Roadside)(GetRoadside(t) - ROADSIDE_GRASS_ROAD_WORKS + ROADSIDE_GRASS));
/* Stop the counter */
SB(_m[t].m3, 0, 4, 0);
}
static inline DiagDirection GetRoadDepotDirection(TileIndex t)
{
assert(GetRoadTileType(t) == ROAD_TILE_DEPOT);
return (DiagDirection)GB(_m[t].m5, 0, 2);
}
/**
* Returns the RoadBits on an arbitrary tile
* Special behaviour:
* - road depots: entrance is treated as road piece
* - road tunnels: entrance is treated as road piece
* - bridge ramps: start of the ramp is treated as road piece
* - bridge middle parts: bridge itself is ignored
* @param tile the tile to get the road bits for
* @return the road bits of the given tile
*/
RoadBits GetAnyRoadBits(TileIndex tile);
/**
* Get the accessible track bits for the given tile.
* Special behaviour:
* - road depots: no track bits
* - non-drive-through stations: no track bits
* @param tile the tile to get the track bits for
* @return the track bits for the given tile
*/
TrackBits GetAnyRoadTrackBits(TileIndex tile);
static inline void MakeRoadNormal(TileIndex t, Owner owner, RoadBits bits, TownID town)
{
SetTileType(t, MP_STREET);
SetTileOwner(t, owner);
_m[t].m2 = town;
_m[t].m3 = 0 << 7 | 0 << 4 | 0;
_m[t].m4 = 0;
_m[t].m5 = ROAD_TILE_NORMAL << 4 | bits;
}
static inline void MakeRoadCrossing(TileIndex t, Owner road, Owner rail, Axis roaddir, RailType rt, uint town)
{
SetTileType(t, MP_STREET);
SetTileOwner(t, rail);
_m[t].m2 = town;
_m[t].m3 = 0 << 7 | 0 << 4 | rt;
_m[t].m4 = road;
_m[t].m5 = ROAD_TILE_CROSSING << 4 | roaddir << 3 | 0 << 2;
}
static inline void MakeRoadDepot(TileIndex t, Owner owner, DiagDirection dir)
{
SetTileType(t, MP_STREET);
SetTileOwner(t, owner);
_m[t].m2 = 0;
_m[t].m3 = 0;
_m[t].m4 = 0;
_m[t].m5 = ROAD_TILE_DEPOT << 4 | dir;
}
#endif /* ROAD_MAP_H */
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