mirror of
https://github.com/JGRennison/OpenTTD-patches.git
synced 2024-11-04 06:00:15 +00:00
350 lines
8.3 KiB
C
350 lines
8.3 KiB
C
/* $Id$ */
|
|
|
|
#ifndef RAIL_MAP_H
|
|
#define RAIL_MAP_H
|
|
|
|
#include "direction.h"
|
|
#include "rail.h"
|
|
#include "tile.h"
|
|
|
|
|
|
typedef enum RailTileType {
|
|
RAIL_TILE_NORMAL = 0x0,
|
|
RAIL_TILE_SIGNALS = 0x40,
|
|
RAIL_TILE_UNUSED = 0x80, /* XXX: Maybe this could become waypoints? */
|
|
RAIL_TILE_DEPOT_WAYPOINT = 0xC0, /* Is really depots and waypoints... */
|
|
RAIL_TILE_TYPE_MASK = 0xC0
|
|
} RailTileType;
|
|
|
|
static inline RailTileType GetRailTileType(TileIndex t)
|
|
{
|
|
assert(IsTileType(t, MP_RAILWAY));
|
|
return (RailTileType)(_m[t].m5 & RAIL_TILE_TYPE_MASK);
|
|
}
|
|
|
|
/**
|
|
* Returns whether this is plain rails, with or without signals. Iow, if this
|
|
* tiles RailTileType is RAIL_TILE_NORMAL or RAIL_TILE_SIGNALS.
|
|
*/
|
|
static inline bool IsPlainRailTile(TileIndex tile)
|
|
{
|
|
RailTileType rtt = GetRailTileType(tile);
|
|
return rtt == RAIL_TILE_NORMAL || rtt == RAIL_TILE_SIGNALS;
|
|
}
|
|
|
|
/**
|
|
* Checks if a rail tile has signals.
|
|
*/
|
|
static inline bool HasSignals(TileIndex tile)
|
|
{
|
|
return GetRailTileType(tile) == RAIL_TILE_SIGNALS;
|
|
}
|
|
|
|
|
|
/** These specify the subtype when the main rail type is
|
|
* RAIL_TILE_DEPOT_WAYPOINT */
|
|
typedef enum RailTileSubtypes {
|
|
RAIL_SUBTYPE_DEPOT = 0x00,
|
|
RAIL_SUBTYPE_WAYPOINT = 0x04,
|
|
RAIL_SUBTYPE_MASK = 0x3C
|
|
} RailTileSubtype;
|
|
|
|
/**
|
|
* Returns the RailTileSubtype of a given rail tile with type
|
|
* RAIL_TILE_DEPOT_WAYPOINT
|
|
*/
|
|
static inline RailTileSubtype GetRailTileSubtype(TileIndex tile)
|
|
{
|
|
assert(GetRailTileType(tile) == RAIL_TILE_DEPOT_WAYPOINT);
|
|
return (RailTileSubtype)(_m[tile].m5 & RAIL_SUBTYPE_MASK);
|
|
}
|
|
|
|
|
|
static inline bool IsRailWaypoint(TileIndex t)
|
|
{
|
|
return
|
|
GetRailTileType(t) == RAIL_TILE_DEPOT_WAYPOINT &&
|
|
GetRailTileSubtype(t) == RAIL_SUBTYPE_WAYPOINT;
|
|
}
|
|
|
|
|
|
static inline RailType GetRailType(TileIndex t)
|
|
{
|
|
return (RailType)GB(_m[t].m3, 0, 4);
|
|
}
|
|
|
|
// TODO remove this by moving to the same bits as GetRailType()
|
|
static inline RailType GetRailTypeCrossing(TileIndex t)
|
|
{
|
|
return (RailType)GB(_m[t].m4, 0, 4);
|
|
}
|
|
|
|
static inline RailType GetRailTypeOnBridge(TileIndex t)
|
|
{
|
|
return (RailType)GB(_m[t].m3, 4, 4);
|
|
}
|
|
|
|
static inline void SetRailType(TileIndex t, RailType r)
|
|
{
|
|
SB(_m[t].m3, 0, 4, r);
|
|
}
|
|
|
|
// TODO remove this by moving to the same bits as SetRailType()
|
|
static inline void SetRailTypeCrossing(TileIndex t, RailType r)
|
|
{
|
|
SB(_m[t].m4, 0, 4, r);
|
|
}
|
|
|
|
static inline void SetRailTypeOnBridge(TileIndex t, RailType r)
|
|
{
|
|
SB(_m[t].m3, 4, 4, r);
|
|
}
|
|
|
|
|
|
static inline TrackBits GetTrackBits(TileIndex tile)
|
|
{
|
|
return (TrackBits)GB(_m[tile].m5, 0, 6);
|
|
}
|
|
|
|
static inline void SetTrackBits(TileIndex t, TrackBits b)
|
|
{
|
|
SB(_m[t].m5, 0, 6, b);
|
|
}
|
|
|
|
/**
|
|
* Returns whether the given track is present on the given tile. Tile must be
|
|
* a plain rail tile (IsPlainRailTile()).
|
|
*/
|
|
static inline bool HasTrack(TileIndex tile, Track track)
|
|
{
|
|
return HASBIT(GetTrackBits(tile), track);
|
|
}
|
|
|
|
|
|
static inline DiagDirection GetRailDepotDirection(TileIndex t)
|
|
{
|
|
return (DiagDirection)GB(_m[t].m5, 0, 2);
|
|
}
|
|
|
|
|
|
static inline Axis GetWaypointAxis(TileIndex t)
|
|
{
|
|
return HASBIT(_m[t].m5, 0) ? AXIS_Y : AXIS_X;
|
|
}
|
|
|
|
static inline Track GetRailWaypointTrack(TileIndex t)
|
|
{
|
|
return AxisToTrack(GetWaypointAxis(t));
|
|
}
|
|
|
|
static inline TrackBits GetRailWaypointBits(TileIndex t)
|
|
{
|
|
return TrackToTrackBits(GetRailWaypointTrack(t));
|
|
}
|
|
|
|
|
|
typedef enum SignalType {
|
|
SIGTYPE_NORMAL = 0, // normal signal
|
|
SIGTYPE_ENTRY = 1, // presignal block entry
|
|
SIGTYPE_EXIT = 2, // presignal block exit
|
|
SIGTYPE_COMBO = 3 // presignal inter-block
|
|
} SignalType;
|
|
|
|
static inline SignalType GetSignalType(TileIndex t)
|
|
{
|
|
assert(GetRailTileType(t) == RAIL_TILE_SIGNALS);
|
|
return (SignalType)GB(_m[t].m4, 0, 2);
|
|
}
|
|
|
|
static inline void SetSignalType(TileIndex t, SignalType s)
|
|
{
|
|
assert(GetRailTileType(t) == RAIL_TILE_SIGNALS);
|
|
SB(_m[t].m4, 0, 2, s);
|
|
}
|
|
|
|
static inline bool IsPresignalEntry(TileIndex t)
|
|
{
|
|
return GetSignalType(t) == SIGTYPE_ENTRY || GetSignalType(t) == SIGTYPE_COMBO;
|
|
}
|
|
|
|
static inline bool IsPresignalExit(TileIndex t)
|
|
{
|
|
return GetSignalType(t) == SIGTYPE_EXIT || GetSignalType(t) == SIGTYPE_COMBO;
|
|
}
|
|
|
|
static inline void CycleSignalSide(TileIndex t, Track track)
|
|
{
|
|
byte sig;
|
|
byte pos = 6;
|
|
if (track == TRACK_LOWER || track == TRACK_RIGHT) pos = 4;
|
|
|
|
sig = GB(_m[t].m3, pos, 2);
|
|
if (--sig == 0) sig = 3;
|
|
SB(_m[t].m3, pos, 2, sig);
|
|
}
|
|
|
|
|
|
typedef enum SignalVariant {
|
|
SIG_ELECTRIC = 0,
|
|
SIG_SEMAPHORE = 1
|
|
} SignalVariant;
|
|
|
|
static inline SignalVariant GetSignalVariant(TileIndex t)
|
|
{
|
|
return (SignalVariant)GB(_m[t].m4, 2, 1);
|
|
}
|
|
|
|
static inline void SetSignalVariant(TileIndex t, SignalVariant v)
|
|
{
|
|
SB(_m[t].m4, 2, 1, v);
|
|
}
|
|
|
|
static inline bool IsSignalPresent(TileIndex t, byte signalbit)
|
|
{
|
|
return HASBIT(_m[t].m3, signalbit + 4);
|
|
}
|
|
|
|
/** These are states in which a signal can be. Currently these are only two, so
|
|
* simple boolean logic will do. But do try to compare to this enum instead of
|
|
* normal boolean evaluation, since that will make future additions easier.
|
|
*/
|
|
typedef enum SignalStates {
|
|
SIGNAL_STATE_RED = 0,
|
|
SIGNAL_STATE_GREEN = 1,
|
|
} SignalState;
|
|
|
|
static inline SignalState GetSingleSignalState(TileIndex t, byte signalbit)
|
|
{
|
|
return (SignalState)HASBIT(_m[t].m2, signalbit + 4);
|
|
}
|
|
|
|
|
|
/**
|
|
* Checks for the presence of signals (either way) on the given track on the
|
|
* given rail tile.
|
|
*/
|
|
static inline bool HasSignalOnTrack(TileIndex tile, Track track)
|
|
{
|
|
assert(IsValidTrack(track));
|
|
return
|
|
GetRailTileType(tile) == RAIL_TILE_SIGNALS &&
|
|
(_m[tile].m3 & SignalOnTrack(track)) != 0;
|
|
}
|
|
|
|
/**
|
|
* Checks for the presence of signals along the given trackdir on the given
|
|
* rail tile.
|
|
*
|
|
* Along meaning if you are currently driving on the given trackdir, this is
|
|
* the signal that is facing us (for which we stop when it's red).
|
|
*/
|
|
static inline bool HasSignalOnTrackdir(TileIndex tile, Trackdir trackdir)
|
|
{
|
|
assert (IsValidTrackdir(trackdir));
|
|
return
|
|
GetRailTileType(tile) == RAIL_TILE_SIGNALS &&
|
|
_m[tile].m3 & SignalAlongTrackdir(trackdir);
|
|
}
|
|
|
|
/**
|
|
* Gets the state of the signal along the given trackdir.
|
|
*
|
|
* Along meaning if you are currently driving on the given trackdir, this is
|
|
* the signal that is facing us (for which we stop when it's red).
|
|
*/
|
|
static inline SignalState GetSignalStateByTrackdir(TileIndex tile, Trackdir trackdir)
|
|
{
|
|
assert(IsValidTrackdir(trackdir));
|
|
assert(HasSignalOnTrack(tile, TrackdirToTrack(trackdir)));
|
|
return _m[tile].m2 & SignalAlongTrackdir(trackdir) ?
|
|
SIGNAL_STATE_GREEN : SIGNAL_STATE_RED;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return the rail type of tile, or INVALID_RAILTYPE if this is no rail tile.
|
|
* Note that there is no check if the given trackdir is actually present on
|
|
* the tile!
|
|
* The given trackdir is used when there are (could be) multiple rail types on
|
|
* one tile.
|
|
*/
|
|
RailType GetTileRailType(TileIndex tile, Trackdir trackdir);
|
|
|
|
|
|
typedef enum RailGroundType {
|
|
RAIL_GROUND_BARREN = 0,
|
|
RAIL_GROUND_GRASS = 1,
|
|
RAIL_GROUND_FENCE_NW = 2,
|
|
RAIL_GROUND_FENCE_SE = 3,
|
|
RAIL_GROUND_FENCE_SENW = 4,
|
|
RAIL_GROUND_FENCE_NE = 5,
|
|
RAIL_GROUND_FENCE_SW = 6,
|
|
RAIL_GROUND_FENCE_NESW = 7,
|
|
RAIL_GROUND_FENCE_VERT1 = 8,
|
|
RAIL_GROUND_FENCE_VERT2 = 9,
|
|
RAIL_GROUND_FENCE_HORIZ1 = 10,
|
|
RAIL_GROUND_FENCE_HORIZ2 = 11,
|
|
RAIL_GROUND_ICE_DESERT = 12,
|
|
} RailGroundType;
|
|
|
|
static inline void SetRailGroundType(TileIndex t, RailGroundType rgt)
|
|
{
|
|
if (GetRailTileType(t) == RAIL_TILE_DEPOT_WAYPOINT) {
|
|
SB(_m[t].m4, 0, 4, rgt);
|
|
return;
|
|
}
|
|
SB(_m[t].m2, 0, 4, rgt);
|
|
}
|
|
|
|
static inline RailGroundType GetRailGroundType(TileIndex t)
|
|
{
|
|
/* TODO Unify this */
|
|
if (GetRailTileType(t) == RAIL_TILE_DEPOT_WAYPOINT) return (RailGroundType)GB(_m[t].m4, 0, 4);
|
|
return (RailGroundType)GB(_m[t].m2, 0, 4);
|
|
}
|
|
|
|
static inline bool IsBarrenRailGround(TileIndex t)
|
|
{
|
|
return GetRailGroundType(t) == RAIL_GROUND_BARREN;
|
|
}
|
|
|
|
static inline bool IsSnowRailGround(TileIndex t)
|
|
{
|
|
return GetRailGroundType(t) == RAIL_GROUND_ICE_DESERT;
|
|
}
|
|
|
|
|
|
static inline void MakeRailNormal(TileIndex t, Owner o, TrackBits b, RailType r)
|
|
{
|
|
SetTileType(t, MP_RAILWAY);
|
|
SetTileOwner(t, o);
|
|
_m[t].m2 = 0;
|
|
_m[t].m3 = r;
|
|
_m[t].m4 = 0;
|
|
_m[t].m5 = RAIL_TILE_NORMAL | b;
|
|
}
|
|
|
|
|
|
static inline void MakeRailDepot(TileIndex t, Owner o, DiagDirection d, RailType r)
|
|
{
|
|
SetTileType(t, MP_RAILWAY);
|
|
SetTileOwner(t, o);
|
|
_m[t].m2 = 0;
|
|
_m[t].m3 = r;
|
|
_m[t].m4 = 0;
|
|
_m[t].m5 = RAIL_TILE_DEPOT_WAYPOINT | RAIL_SUBTYPE_DEPOT | d;
|
|
}
|
|
|
|
|
|
static inline void MakeRailWaypoint(TileIndex t, Owner o, Axis a, RailType r, uint index)
|
|
{
|
|
SetTileType(t, MP_RAILWAY);
|
|
SetTileOwner(t, o);
|
|
_m[t].m2 = index;
|
|
_m[t].m3 = r;
|
|
_m[t].m4 = 0;
|
|
_m[t].m5 = RAIL_TILE_DEPOT_WAYPOINT | RAIL_SUBTYPE_WAYPOINT | a;
|
|
}
|
|
|
|
#endif
|