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/* $Id$ */
#ifndef ROAD_MAP_H
#define ROAD_MAP_H
#include "macros.h"
#include "rail.h"
#include "road.h"
#include "tile.h"
typedef enum RoadType {
ROAD_NORMAL,
ROAD_CROSSING,
ROAD_DEPOT
} RoadType;
static inline RoadType GetRoadType(TileIndex t)
{
assert(IsTileType(t, MP_STREET));
return GB(_m[t].m5, 4, 4);
}
static inline bool IsLevelCrossing(TileIndex t)
{
return GetRoadType(t) == ROAD_CROSSING;
}
static inline RoadBits GetRoadBits(TileIndex t)
{
assert(GetRoadType(t) == ROAD_NORMAL);
return GB(_m[t].m5, 0, 4);
}
static inline void SetRoadBits(TileIndex t, RoadBits r)
{
assert(GetRoadType(t) == ROAD_NORMAL); // XXX incomplete
SB(_m[t].m5, 0, 4, r);
}
static inline Axis GetCrossingRoadAxis(TileIndex t)
{
assert(GetRoadType(t) == ROAD_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 GetCrossingRoadAxis(tile) == AXIS_X ? TRACK_BIT_Y : TRACK_BIT_X;
}
// TODO swap owner of road and rail
static inline Owner GetCrossingRoadOwner(TileIndex t)
{
assert(GetRoadType(t) == ROAD_CROSSING);
return (Owner)_m[t].m3;
}
static inline void SetCrossingRoadOwner(TileIndex t, Owner o)
{
assert(GetRoadType(t) == ROAD_CROSSING);
_m[t].m3 = o;
}
static inline void UnbarCrossing(TileIndex t)
{
assert(GetRoadType(t) == ROAD_CROSSING);
CLRBIT(_m[t].m5, 2);
}
static inline void BarCrossing(TileIndex t)
{
assert(GetRoadType(t) == ROAD_CROSSING);
SETBIT(_m[t].m5, 2);
}
static inline bool IsCrossingBarred(TileIndex t)
{
assert(GetRoadType(t) == ROAD_CROSSING);
return HASBIT(_m[t].m5, 2);
}
#define IsOnDesert IsOnSnow
static inline bool IsOnSnow(TileIndex t)
{
return HASBIT(_m[t].m4, 7);
}
#define ToggleDesert ToggleSnow
static inline void ToggleSnow(TileIndex t)
{
TOGGLEBIT(_m[t].m4, 7);
}
typedef enum RoadGroundType {
RGT_BARREN,
RGT_GRASS,
RGT_PAVED,
RGT_LIGHT,
RGT_NOT_IN_USE, /* Has something to do with fund buildings */
RGT_ALLEY,
RGT_ROADWORK_GRASS,
RGT_ROADWORK_PAVED,
RGT_ROADWORK_OFFSET = RGT_ROADWORK_GRASS - RGT_GRASS
} RoadGroundType;
static inline RoadGroundType GetGroundType(TileIndex t)
{
return (RoadGroundType)GB(_m[t].m4, 4, 3);
}
static inline void SetGroundType(TileIndex t, RoadGroundType rgt)
{
SB(_m[t].m4, 4, 3, rgt);
}
static inline bool HasRoadWorks(TileIndex t)
{
return GetGroundType(t) >= RGT_ROADWORK_GRASS;
}
static inline bool IncreaseRoadWorksCounter(TileIndex t)
{
AB(_m[t].m4, 0, 4, 1);
return GB(_m[t].m4, 0, 4) == 15;
}
static inline void StartRoadWorks(TileIndex t)
{
assert(!HasRoadWorks(t));
/* Remove any trees or lamps in case or roadwork */
SetGroundType(t, min(GetGroundType(t), RGT_PAVED) + RGT_ROADWORK_OFFSET);
}
static inline void TerminateRoadWorks(TileIndex t)
{
assert(HasRoadWorks(t));
SetGroundType(t, GetGroundType(t) - RGT_ROADWORK_OFFSET);
/* Stop the counter */
SB(_m[t].m4, 0, 4, 0);
}
static inline bool HasPavement(TileIndex t)
{
return GetGroundType(t) >= RGT_PAVED && GetGroundType(t) != RGT_ROADWORK_GRASS;
}
static inline DiagDirection GetRoadDepotDirection(TileIndex t)
{
assert(GetRoadType(t) == ROAD_DEPOT);
return (DiagDirection)GB(_m[t].m5, 0, 2);
}
/**
* Returns the RoadBits on an arbitrary tile
* Special behavior:
* - 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
*/
RoadBits GetAnyRoadBits(TileIndex);
TrackBits GetAnyRoadTrackBits(TileIndex tile);
static inline void MakeRoadNormal(TileIndex t, Owner owner, RoadBits bits, uint town)
{
SetTileType(t, MP_STREET);
SetTileOwner(t, owner);
_m[t].m2 = town;
_m[t].m3 = 0;
_m[t].m4 = 0 << 7 | 0 << 4 | 0;
_m[t].m5 = ROAD_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 = road;
_m[t].m4 = 0 << 7 | 0 << 4 | rt;
_m[t].m5 = ROAD_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_DEPOT << 4 | dir;
}
#endif
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