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annotate src/roadstop.cpp @ 13859:e6ee12f4541d draft

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(svn r18388) -Codechange: move entering/leaving of road stops to functions of RoadStop
author rubidium <rubidium@openttd.org>
date Wed, 02 Dec 2009 23:53:15 +0000
parents 8c8d1ebf7ae1
children 99221d89bb23
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1 /* $Id$ */
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2
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3 /*
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4 * This file is part of OpenTTD.
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5 * 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.
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6 * 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.
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7 * 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/>.
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8 */
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9
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10 /** @file roadstop.cpp Implementation of the roadstop base class. */
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11
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12 #include "stdafx.h"
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13 #include "roadveh.h"
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14 #include "core/pool_func.hpp"
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15 #include "roadstop_base.h"
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16 #include "station_base.h"
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17
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18 RoadStopPool _roadstop_pool("RoadStop");
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19 INSTANTIATE_POOL_METHODS(RoadStop)
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21 /**
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22 * De-Initializes RoadStops.
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23 */
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24 RoadStop::~RoadStop()
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25 {
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26 if (CleaningPool()) return;
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27 }
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28
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29 /**
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30 * Get the next road stop accessible by this vehicle.
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31 * @param v the vehicle to get the next road stop for.
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32 * @return the next road stop accessible.
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33 */
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34 RoadStop *RoadStop::GetNextRoadStop(const RoadVehicle *v) const
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35 {
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36 for (RoadStop *rs = this->next; rs != NULL; rs = rs->next) {
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37 /* The vehicle cannot go to this roadstop (different roadtype) */
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38 if ((GetRoadTypes(rs->xy) & v->compatible_roadtypes) == ROADTYPES_NONE) continue;
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39 /* The vehicle is articulated and can therefor not go the a standard road stop */
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40 if (IsStandardRoadStopTile(rs->xy) && v->HasArticulatedPart()) continue;
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41
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42 /* The vehicle can actually go to this road stop. So, return it! */
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43 return rs;
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44 }
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45
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46 return NULL;
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47 }
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48
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49 /**
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50 * Leave the road stop
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51 * @param rv the vehicle that leaves the stop
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52 */
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53 void RoadStop::Leave(RoadVehicle *rv)
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54 {
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55 /* Vehicle is leaving a road stop tile, mark bay as free
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56 * For drive-through stops, only do it if the vehicle stopped here */
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57 if (IsStandardRoadStopTile(rv->tile) || HasBit(rv->state, RVS_IS_STOPPING)) {
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58 this->FreeBay(HasBit(rv->state, RVS_USING_SECOND_BAY));
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59 ClrBit(rv->state, RVS_IS_STOPPING);
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60 }
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61 if (IsStandardRoadStopTile(rv->tile)) this->SetEntranceBusy(false);
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62 }
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63
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64 /**
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65 * Enter the road stop
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66 * @param rv the vehicle that enters the stop
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67 * @return whether the road stop could actually be entered
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68 */
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69 bool RoadStop::Enter(RoadVehicle *rv)
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70 {
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71 if (IsStandardRoadStopTile(this->xy)) {
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72 /* For normal (non drive-through) road stops
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73 * Check if station is busy or if there are no free bays or whether it is a articulated vehicle. */
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74 if (this->IsEntranceBusy() || !this->HasFreeBay() || rv->HasArticulatedPart()) return false;
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75
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76 SetBit(rv->state, RVS_IN_ROAD_STOP);
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77
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78 /* Allocate a bay and update the road state */
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79 uint bay_nr = this->AllocateBay();
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80 SB(rv->state, RVS_USING_SECOND_BAY, 1, bay_nr);
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81
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82 /* Mark the station entrace as busy */
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83 this->SetEntranceBusy(true);
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84 return true;
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85 }
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86
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87 /* Vehicles entering a drive-through stop from the 'normal' side use first bay (bay 0). */
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88 byte side = ((DirToDiagDir(rv->direction) == ReverseDiagDir(GetRoadStopDir(this->xy))) == (rv->overtaking == 0)) ? 0 : 1;
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89
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90 if (!this->IsFreeBay(side)) return false;
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91
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92 /* Check if the vehicle is stopping at this road stop */
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93 if (GetRoadStopType(this->xy) == (rv->IsBus() ? ROADSTOP_BUS : ROADSTOP_TRUCK) &&
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94 rv->current_order.ShouldStopAtStation(rv, GetStationIndex(this->xy))) {
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95 SetBit(rv->state, RVS_IS_STOPPING);
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96 this->AllocateDriveThroughBay(side);
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97 }
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98
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99 /* Indicate if vehicle is using second bay. */
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100 if (side == 1) SetBit(rv->state, RVS_USING_SECOND_BAY);
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101 /* Indicate a drive-through stop */
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102 SetBit(rv->state, RVS_IN_DT_ROAD_STOP);
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103 return true;
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104 }
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105
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106 /**
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107 * Find a roadstop at given tile
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108 * @param tile tile with roadstop
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109 * @param type roadstop type
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110 * @return pointer to RoadStop
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111 * @pre there has to be roadstop of given type there!
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112 */
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113 /* static */ RoadStop *RoadStop::GetByTile(TileIndex tile, RoadStopType type)
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114 {
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115 const Station *st = Station::GetByTile(tile);
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116
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117 for (RoadStop *rs = st->GetPrimaryRoadStop(type);; rs = rs->next) {
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118 if (rs->xy == tile) return rs;
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119 assert(rs->next != NULL);
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120 }
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121 }
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122
12225
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123 void InitializeRoadStops()
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124 {
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125 _roadstop_pool.CleanPool();
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126 }