road_func.h File Reference

Functions related to roads. More...

#include "core/bitmath_func.hpp"
#include "road_type.h"
#include "direction_func.h"
#include "company_type.h"

Go to the source code of this file.

Functions

static bool IsValidRoadType (RoadType rt)
 Whether the given roadtype is valid.
static bool AreValidRoadTypes (RoadTypes rts)
 Are the given bits pointing to valid roadtypes?
static RoadTypes RoadTypeToRoadTypes (RoadType rt)
 Maps a RoadType to the corresponding RoadTypes value.
static RoadTypes ComplementRoadTypes (RoadTypes r)
 Returns the RoadTypes which are not present in the given RoadTypes.
static RoadBits ComplementRoadBits (RoadBits r)
 Calculate the complement of a RoadBits value.
static RoadBits MirrorRoadBits (RoadBits r)
 Calculate the mirrored RoadBits.
static RoadBits RotateRoadBits (RoadBits r, DiagDirDiff rot)
 Calculate rotated RoadBits.
static bool IsStraightRoad (RoadBits r)
 Check if we've got a straight road.
static RoadBits DiagDirToRoadBits (DiagDirection d)
 Create the road-part which belongs to the given DiagDirection.
static RoadBits AxisToRoadBits (Axis a)
 Create the road-part which belongs to the given Axis.
bool HasRoadTypesAvail (const CompanyID company, const RoadTypes rts)
 Finds out, whether given company has all given RoadTypes available.
bool ValParamRoadType (const RoadType rt)
 Validate functions for rail building.
RoadTypes GetCompanyRoadtypes (const CompanyID company)
 Get the road types the given company can build.
void UpdateLevelCrossing (TileIndex tile, bool sound=true)
 Sets correct crossing state.


Detailed Description

Functions related to roads.

Definition in file road_func.h.


Function Documentation

static bool AreValidRoadTypes ( RoadTypes  rts  )  [inline, static]

Are the given bits pointing to valid roadtypes?

Parameters:
rts the roadtypes to check for validness
Returns:
true if and only if valid

Definition at line 28 of file road_func.h.

References HasBit(), ROADTYPE_ROAD, and ROADTYPE_TRAM.

Referenced by CmdBuildBridge(), CmdBuildRoadStop(), and CmdBuildTunnel().

static RoadBits AxisToRoadBits ( Axis  a  )  [inline, static]

Create the road-part which belongs to the given Axis.

This function returns a RoadBits value which belongs to the given Axis.

Parameters:
a The Axis
Returns:
The result RoadBits which the selected road-part set

Definition at line 137 of file road_func.h.

References AXIS_X, ROAD_X, and ROAD_Y.

Referenced by CmdBuildRoad(), GetAnyRoadBits(), and RoadFindPathToDest().

static RoadBits ComplementRoadBits ( RoadBits  r  )  [inline, static]

Calculate the complement of a RoadBits value.

Simply flips all bits in the RoadBits value to get the complement of the RoadBits.

Parameters:
r The given RoadBits value
Returns:
the complement

Definition at line 68 of file road_func.h.

References ROAD_ALL.

Referenced by CmdBuildRoad(), and RemoveRoad().

static RoadTypes ComplementRoadTypes ( RoadTypes  r  )  [inline, static]

Returns the RoadTypes which are not present in the given RoadTypes.

This function returns the complement of a given RoadTypes.

Parameters:
r The given RoadTypes
Returns:
The complement of the given RoadTypes
Note:
The unused value ROADTYPES_HWAY will be used, too.

Definition at line 53 of file road_func.h.

References ROADTYPES_ALL.

Referenced by RemoveRoad().

static RoadBits DiagDirToRoadBits ( DiagDirection  d  )  [inline, static]

Create the road-part which belongs to the given DiagDirection.

This function returns a RoadBits value which belongs to the given DiagDirection.

Parameters:
d The DiagDirection
Returns:
The result RoadBits which the selected road-part set

Definition at line 123 of file road_func.h.

References ROAD_NW.

Referenced by AIBridge::_BuildBridgeRoad1(), AIBridge::_BuildBridgeRoad2(), AITunnel::_BuildTunnelRoad1(), AITunnel::_BuildTunnelRoad2(), CleanUpRoadBits(), CmdBuildRoad(), CmdRemoveRoadStop(), GetAnyRoadBits(), GetTownRoadGridElement(), GrowTownAtRoad(), GrowTownInTile(), GrowTownWithBridge(), IsNeighborRoadTile(), and RoadFindPathToDest().

RoadTypes GetCompanyRoadtypes ( const CompanyID  company  ) 

Get the road types the given company can build.

Parameters:
company the company to get the roadtypes for.
Returns:
the road types.

Definition at line 98 of file road.cpp.

References _date, _settings_game, EngineInfo::climates, DAYS_IN_YEAR, EF_ROAD_TRAM, GameSettings::game_creation, HasBit(), GameCreationSettings::landscape, EngineInfo::misc_flags, ROADTYPE_ROAD, ROADTYPE_TRAM, ROADTYPES_NONE, and SetBit().

Referenced by DoStartupNewCompany().

bool HasRoadTypesAvail ( const CompanyID  company,
const RoadTypes  rts 
)

Finds out, whether given company has all given RoadTypes available.

Parameters:
company ID of company
rts RoadTypes to test
Returns:
true if company has all requested RoadTypes available

Definition at line 80 of file road.cpp.

References IsGeneratingWorld(), OWNER_TOWN, and ROADTYPES_ROAD.

Referenced by CmdBuildBridge(), CmdBuildRoadStop(), CmdBuildTunnel(), AIRoad::IsRoadTypeAvailable(), and ValParamRoadType().

static bool IsStraightRoad ( RoadBits  r  )  [inline, static]

Check if we've got a straight road.

Parameters:
r The given RoadBits
Returns:
true if we've got a straight road

Definition at line 109 of file road_func.h.

References ROAD_X, and ROAD_Y.

Referenced by CheckRoadSlope(), CmdBuildRoad(), and RemoveRoad().

static bool IsValidRoadType ( RoadType  rt  )  [inline, static]

Whether the given roadtype is valid.

Parameters:
rt the roadtype to check for validness
Returns:
true if and only if valid

Definition at line 18 of file road_func.h.

References ROADTYPE_ROAD, and ROADTYPE_TRAM.

Referenced by CmdBuildLongRoad(), CmdBuildRoad(), CmdBuildRoadDepot(), CmdRemoveLongRoad(), and CmdRemoveRoad().

static RoadBits MirrorRoadBits ( RoadBits  r  )  [inline, static]

Calculate the mirrored RoadBits.

Simply move the bits to their new position.

Parameters:
r The given RoadBits value
Returns:
the mirrored

Definition at line 81 of file road_func.h.

References GB().

Referenced by CheckRoadSlope(), CleanUpRoadBits(), CmdBuildRoad(), and RemoveRoad().

static RoadTypes RoadTypeToRoadTypes ( RoadType  rt  )  [inline, static]

static RoadBits RotateRoadBits ( RoadBits  r,
DiagDirDiff  rot 
) [inline, static]

Calculate rotated RoadBits.

Move the Roadbits clockwise til they are in their final position.

Parameters:
r The given RoadBits value
rot The given Rotation angle
Returns:
the rotated

Definition at line 95 of file road_func.h.

References GB().

void UpdateLevelCrossing ( TileIndex  tile,
bool  sound 
)

Sets correct crossing state.

Parameters:
tile tile to update
sound should we play sound?
Precondition:
tile is a rail-road crossing

Definition at line 1699 of file train_cmd.cpp.

References GetCrossingReservation(), HasVehicleOnPos(), MarkTileDirtyByTile(), TrainApproachingCrossing(), and TrainOnTileEnum().

Referenced by CmdBuildRoad(), CmdBuildSingleRail(), DeleteLastWagon(), and UnreserveRailTrack().

bool ValParamRoadType ( const RoadType  rt  ) 

Validate functions for rail building.

Parameters:
rt road type to check.
Returns:
true if the current company may build the road.

Definition at line 93 of file road.cpp.

References HasRoadTypesAvail(), and RoadTypeToRoadTypes().

Referenced by CmdBuildLongRoad(), CmdBuildRoad(), and CmdBuildRoadDepot().


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