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Location: cpp/openttd-patchpack/source/src/road_func.h - annotation
r28645:c09eac136c46
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Change: Link houses production on industry chain graph by TPE_PASSENGERS or TPE_MAIL cargo.
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* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file road_func.h Functions related to roads. */
#ifndef ROAD_FUNC_H
#define ROAD_FUNC_H
#include "core/bitmath_func.hpp"
#include "road.h"
#include "economy_func.h"
#include "transparency.h"
/**
* Whether the given roadtype is valid.
* @param r the roadtype to check for validness
* @return true if and only if valid
*/
inline bool IsValidRoadBits(RoadBits r)
{
return r < ROAD_END;
}
/**
* Calculate the complement of a RoadBits value
*
* Simply flips all bits in the RoadBits value to get the complement
* of the RoadBits.
*
* @param r The given RoadBits value
* @return the complement
*/
inline RoadBits ComplementRoadBits(RoadBits r)
{
assert(IsValidRoadBits(r));
return (RoadBits)(ROAD_ALL ^ r);
}
/**
* Calculate the mirrored RoadBits
*
* Simply move the bits to their new position.
*
* @param r The given RoadBits value
* @return the mirrored
*/
inline RoadBits MirrorRoadBits(RoadBits r)
{
assert(IsValidRoadBits(r));
return (RoadBits)(GB(r, 0, 2) << 2 | GB(r, 2, 2));
}
/**
* Calculate rotated RoadBits
*
* Move the Roadbits clockwise until they are in their final position.
*
* @param r The given RoadBits value
* @param rot The given Rotation angle
* @return the rotated
*/
inline RoadBits RotateRoadBits(RoadBits r, DiagDirDiff rot)
{
assert(IsValidRoadBits(r));
for (; rot > (DiagDirDiff)0; rot--) {
r = (RoadBits)(GB(r, 0, 1) << 3 | GB(r, 1, 3));
}
return r;
}
/**
* Check if we've got a straight road
*
* @param r The given RoadBits
* @return true if we've got a straight road
*/
inline bool IsStraightRoad(RoadBits r)
{
assert(IsValidRoadBits(r));
return (r == ROAD_X || r == ROAD_Y);
}
/**
* Create the road-part which belongs to the given DiagDirection
*
* This function returns a RoadBits value which belongs to
* the given DiagDirection.
*
* @param d The DiagDirection
* @return The result RoadBits which the selected road-part set
*/
inline RoadBits DiagDirToRoadBits(DiagDirection d)
{
assert(IsValidDiagDirection(d));
return (RoadBits)(ROAD_NW << (3 ^ d));
}
/**
* Create the road-part which belongs to the given Axis
*
* This function returns a RoadBits value which belongs to
* the given Axis.
*
* @param a The Axis
* @return The result RoadBits which the selected road-part set
*/
inline RoadBits AxisToRoadBits(Axis a)
{
assert(IsValidAxis(a));
return a == AXIS_X ? ROAD_X : ROAD_Y;
}
/**
* Calculates the maintenance cost of a number of road bits.
* @param roadtype Road type to get the cost for.
* @param num Number of road bits.
* @param total_num Total number of road bits of all road/tram-types.
* @return Total cost.
*/
inline Money RoadMaintenanceCost(RoadType roadtype, uint32_t num, uint32_t total_num)
{
assert(roadtype < ROADTYPE_END);
return (_price[PR_INFRASTRUCTURE_ROAD] * GetRoadTypeInfo(roadtype)->maintenance_multiplier * num * (1 + IntSqrt(total_num))) >> 12;
}
/**
* Test if a road type has catenary
* @param roadtype Road type to test
*/
inline bool HasRoadCatenary(RoadType roadtype)
{
assert(roadtype < ROADTYPE_END);
return HasBit(GetRoadTypeInfo(roadtype)->flags, ROTF_CATENARY);
}
/**
* Test if we should draw road catenary
* @param roadtype Road type to test
*/
inline bool HasRoadCatenaryDrawn(RoadType roadtype)
{
return HasRoadCatenary(roadtype) && !IsInvisibilitySet(TO_CATENARY);
}
bool HasRoadTypeAvail(CompanyID company, RoadType roadtype);
bool ValParamRoadType(RoadType roadtype);
RoadTypes GetCompanyRoadTypes(CompanyID company, bool introduces = true);
RoadTypes GetRoadTypes(bool introduces);
RoadTypes AddDateIntroducedRoadTypes(RoadTypes current, TimerGameCalendar::Date date);
void UpdateLevelCrossing(TileIndex tile, bool sound = true, bool force_bar = false);
void MarkDirtyAdjacentLevelCrossingTiles(TileIndex tile, Axis road_axis);
void UpdateAdjacentLevelCrossingTilesOnLevelCrossingRemoval(TileIndex tile, Axis road_axis);
void UpdateCompanyRoadInfrastructure(RoadType rt, Owner o, int count);
struct TileInfo;
void DrawRoadOverlays(const TileInfo *ti, PaletteID pal, const RoadTypeInfo *road_rti, const RoadTypeInfo *tram_rit, uint road_offset, uint tram_offset, bool draw_underlay = true);
#endif /* ROAD_FUNC_H */
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