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Location: cpp/openttd-patchpack/source/src/road.cpp - annotation
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(svn r24080) -Update from WebTranslator v3.0:
german - 2 changes by Jogio
irish - 38 changes by tem
italian - 1 changes by Snail_
latvian - 44 changes by Parastais
polish - 4 changes by Kilian
spanish - 2 changes by Terkhen
ukrainian - 1 changes by edd_k
german - 2 changes by Jogio
irish - 38 changes by tem
italian - 1 changes by Snail_
latvian - 44 changes by Parastais
polish - 4 changes by Kilian
spanish - 2 changes by Terkhen
ukrainian - 1 changes by edd_k
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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.cpp Generic road related functions. */
#include "stdafx.h"
#include "rail_map.h"
#include "road_map.h"
#include "water_map.h"
#include "genworld.h"
#include "company_func.h"
#include "company_base.h"
#include "engine_base.h"
#include "date_func.h"
#include "landscape.h"
/**
* Return if the tile is a valid tile for a crossing.
*
* @param tile the curent tile
* @param ax the axis of the road over the rail
* @return true if it is a valid tile
*/
static bool IsPossibleCrossing(const TileIndex tile, Axis ax)
{
return (IsTileType(tile, MP_RAILWAY) &&
GetRailTileType(tile) == RAIL_TILE_NORMAL &&
GetTrackBits(tile) == (ax == AXIS_X ? TRACK_BIT_Y : TRACK_BIT_X) &&
GetFoundationSlope(tile) == SLOPE_FLAT);
}
/**
* Clean up unneccesary RoadBits of a planed tile.
* @param tile current tile
* @param org_rb planed RoadBits
* @return optimised RoadBits
*/
RoadBits CleanUpRoadBits(const TileIndex tile, RoadBits org_rb)
{
if (!IsValidTile(tile)) return ROAD_NONE;
for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) {
const TileIndex neighbor_tile = TileAddByDiagDir(tile, dir);
/* Get the Roadbit pointing to the neighbor_tile */
const RoadBits target_rb = DiagDirToRoadBits(dir);
/* If the roadbit is in the current plan */
if (org_rb & target_rb) {
bool connective = false;
const RoadBits mirrored_rb = MirrorRoadBits(target_rb);
switch (GetTileType(neighbor_tile)) {
/* Allways connective ones */
case MP_CLEAR: case MP_TREES:
connective = true;
break;
/* The conditionally connective ones */
case MP_TUNNELBRIDGE:
case MP_STATION:
case MP_ROAD: {
const RoadBits neighbor_rb = GetAnyRoadBits(neighbor_tile, ROADTYPE_ROAD) | GetAnyRoadBits(neighbor_tile, ROADTYPE_TRAM);
/* Accept only connective tiles */
connective = (neighbor_rb & mirrored_rb) || // Neighbor has got the fitting RoadBit
HasExactlyOneBit(neighbor_rb); // Neighbor has got only one Roadbit
break;
}
case MP_RAILWAY:
connective = IsPossibleCrossing(neighbor_tile, DiagDirToAxis(dir));
break;
case MP_WATER:
/* Check for real water tile */
connective = !IsWater(neighbor_tile);
break;
/* The defentetly not connective ones */
default: break;
}
/* If the neighbor tile is inconnective remove the planed road connection to it */
if (!connective) org_rb ^= target_rb;
}
}
return org_rb;
}
/**
* Finds out, whether given company has all given RoadTypes available
* @param company ID of company
* @param rts RoadTypes to test
* @return true if company has all requested RoadTypes available
*/
bool HasRoadTypesAvail(const CompanyID company, const RoadTypes rts)
{
RoadTypes avail_roadtypes;
if (company == OWNER_DEITY || company == OWNER_TOWN || _game_mode == GM_EDITOR || _generating_world) {
avail_roadtypes = ROADTYPES_ROAD;
} else {
Company *c = Company::GetIfValid(company);
if (c == NULL) return false;
avail_roadtypes = (RoadTypes)c->avail_roadtypes | ROADTYPES_ROAD; // road is available for always for everybody
}
return (rts & ~avail_roadtypes) == 0;
}
/**
* Validate functions for rail building.
* @param rt road type to check.
* @return true if the current company may build the road.
*/
bool ValParamRoadType(const RoadType rt)
{
return HasRoadTypesAvail(_current_company, RoadTypeToRoadTypes(rt));
}
/**
* Get the road types the given company can build.
* @param company the company to get the roadtypes for.
* @return the road types.
*/
RoadTypes GetCompanyRoadtypes(CompanyID company)
{
RoadTypes rt = ROADTYPES_NONE;
Engine *e;
FOR_ALL_ENGINES_OF_TYPE(e, VEH_ROAD) {
const EngineInfo *ei = &e->info;
if (HasBit(ei->climates, _settings_game.game_creation.landscape) &&
(HasBit(e->company_avail, company) || _date >= e->intro_date + DAYS_IN_YEAR)) {
SetBit(rt, HasBit(ei->misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
}
}
return rt;
}
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