# station.cpp

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    00001 /* $Id: station.cpp 15299 2009-01-31 20:16:06Z smatz $ */
    00002
    00005 #include "stdafx.h"
    00006 #include "company_func.h"
    00007 #include "industry.h"
    00008 #include "newgrf_cargo.h"
    00009 #include "yapf/yapf.h"
    00010 #include "cargotype.h"
    00011 #include "roadveh.h"
    00012 #include "window_type.h"
    00013 #include "station_gui.h"
    00014 #include "zoom_func.h"
    00015 #include "functions.h"
    00016 #include "window_func.h"
    00017 #include "date_func.h"
    00018 #include "command_func.h"
    00019 #include "news_func.h"
    00020 #include "aircraft.h"
    00021 #include "vehicle_gui.h"
    00022 #include "settings_type.h"
    00023
    00024 #include "table/strings.h"
    00025
    00026 Station::Station(TileIndex tile)
    00027 {
    00028   DEBUG(station, cDebugCtorLevel, "I+%3d", index);
    00029
    00030   xy = tile;
    00031   airport_tile = dock_tile = train_tile = INVALID_TILE;
    00032   bus_stops = truck_stops = NULL;
    00033   had_vehicle_of_type = 0;
    00034   time_since_load = 255;
    00035   time_since_unload = 255;
    00036   delete_ctr = 0;
    00037   facilities = 0;
    00038
    00039   last_vehicle_type = VEH_INVALID;
    00040   indtype = IT_INVALID;
    00041
    00042   random_bits = 0; // Random() must be called when station is really built (DC_EXEC)
    00043   waiting_triggers = 0;
    00044 }
    00045
    00052 Station::~Station()
    00053 {
    00054   DEBUG(station, cDebugCtorLevel, "I-%3d", index);
    00055
    00056   free(this->name);
    00057   free(this->speclist);
    00058
    00059   if (CleaningPool()) return;
    00060
    00061   while (!loading_vehicles.empty()) {
    00062     loading_vehicles.front()->LeaveStation();
    00063   }
    00064
    00065   Vehicle *v;
    00066   FOR_ALL_VEHICLES(v) {
    00067     if (v->type == VEH_AIRCRAFT && IsNormalAircraft(v) && v->u.air.targetairport == this->index) {
    00068       v->u.air.targetairport = INVALID_STATION;
    00069     }
    00070   }
    00071
    00072   MarkDirty();
    00073   InvalidateWindowData(WC_STATION_LIST, this->owner, 0);
    00074
    00075   DeleteWindowById(WC_STATION_VIEW, index);
    00076   WindowNumber wno = (index << 16) | VLW_STATION_LIST | this->owner;
    00077   DeleteWindowById(WC_TRAINS_LIST, wno | (VEH_TRAIN << 11));
    00078   DeleteWindowById(WC_ROADVEH_LIST, wno | (VEH_ROAD << 11));
    00079   DeleteWindowById(WC_SHIPS_LIST, wno | (VEH_SHIP << 11));
    00080   DeleteWindowById(WC_AIRCRAFT_LIST, wno | (VEH_AIRCRAFT << 11));
    00081
    00082   /* Now delete all orders that go to the station */
    00083   RemoveOrderFromAllVehicles(OT_GOTO_STATION, index);
    00084
    00085   /* Subsidies need removal as well */
    00086   DeleteSubsidyWithStation(index);
    00087
    00088   /* Remove all news items */
    00089   DeleteStationNews(this->index);
    00090
    00091   xy = INVALID_TILE;
    00092
    00093   InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    00094
    00095   for (CargoID c = 0; c < NUM_CARGO; c++) {
    00096     goods[c].cargo.Truncate(0);
    00097   }
    00098 }
    00099
    00100
    00106 RoadStop *Station::GetPrimaryRoadStop(const Vehicle *v) const
    00107 {
    00108   RoadStop *rs = this->GetPrimaryRoadStop(IsCargoInClass(v->cargo_type, CC_PASSENGERS) ? ROADSTOP_BUS : ROADSTOP_TRUCK);
    00109
    00110   for (; rs != NULL; rs = rs->next) {
    00111     /* The vehicle cannot go to this roadstop (different roadtype) */
    00112     if ((GetRoadTypes(rs->xy) & v->u.road.compatible_roadtypes) == ROADTYPES_NONE) continue;
    00113     /* The vehicle is articulated and can therefor not go the a standard road stop */
    00114     if (IsStandardRoadStopTile(rs->xy) && RoadVehHasArticPart(v)) continue;
    00115
    00116     /* The vehicle can actually go to this road stop. So, return it! */
    00117     break;
    00118   }
    00119
    00120   return rs;
    00121 }
    00122
    00125 void Station::AddFacility(byte new_facility_bit, TileIndex facil_xy)
    00126 {
    00127   if (facilities == 0) {
    00128     xy = facil_xy;
    00129     random_bits = Random();
    00130   }
    00131   facilities |= new_facility_bit;
    00132   owner = _current_company;
    00133   build_date = _date;
    00134 }
    00135
    00136 void Station::MarkDirty() const
    00137 {
    00138   if (sign.width_1 != 0) {
    00139     InvalidateWindowWidget(WC_STATION_VIEW, index, SVW_CAPTION);
    00140
    00141     /* We use ZOOM_LVL_MAX here, as every viewport can have an other zoom,
    00142      *  and there is no way for us to know which is the biggest. So make the
    00143      *  biggest area dirty, and we are safe for sure. */
    00144     MarkAllViewportsDirty(
    00145       sign.left - 6,
    00146       sign.top,
    00147       sign.left + ScaleByZoom(sign.width_1 + 12, ZOOM_LVL_MAX),
    00148       sign.top + ScaleByZoom(12, ZOOM_LVL_MAX));
    00149   }
    00150 }
    00151
    00152 void Station::MarkTilesDirty(bool cargo_change) const
    00153 {
    00154   TileIndex tile = train_tile;
    00155   int w, h;
    00156
    00157   if (tile == INVALID_TILE) return;
    00158
    00159   /* cargo_change is set if we're refreshing the tiles due to cargo moving
    00160    * around. */
    00161   if (cargo_change) {
    00162     /* Don't waste time updating if there are no custom station graphics
    00163      * that might change. Even if there are custom graphics, they might
    00164      * not change. Unfortunately we have no way of telling. */
    00165     if (this->num_specs == 0) return;
    00166   }
    00167
    00168   for (h = 0; h < trainst_h; h++) {
    00169     for (w = 0; w < trainst_w; w++) {
    00170       if (TileBelongsToRailStation(tile)) {
    00171         MarkTileDirtyByTile(tile);
    00172       }
    00173       tile += TileDiffXY(1, 0);
    00174     }
    00175     tile += TileDiffXY(-w, 1);
    00176   }
    00177 }
    00178
    00179 bool Station::TileBelongsToRailStation(TileIndex tile) const
    00180 {
    00181   return IsTileType(tile, MP_STATION) && GetStationIndex(tile) == index && IsRailwayStation(tile);
    00182 }
    00183
    00189 uint Station::GetPlatformLength(TileIndex tile) const
    00190 {
    00191   TileIndex t;
    00192   TileIndexDiff delta;
    00193   uint len = 0;
    00194   assert(TileBelongsToRailStation(tile));
    00195
    00196   delta = (GetRailStationAxis(tile) == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    00197
    00198   t = tile;
    00199   do {
    00200     t -= delta;
    00201     len++;
    00202   } while (IsCompatibleTrainStationTile(t, tile));
    00203
    00204   t = tile;
    00205   do {
    00206     t += delta;
    00207     len++;
    00208   } while (IsCompatibleTrainStationTile(t, tile));
    00209
    00210   return len - 1;
    00211 }
    00212
    00219 uint Station::GetPlatformLength(TileIndex tile, DiagDirection dir) const
    00220 {
    00221   TileIndex start_tile = tile;
    00222   uint length = 0;
    00223   assert(IsRailwayStationTile(tile));
    00224   assert(dir < DIAGDIR_END);
    00225
    00226   do {
    00227     length ++;
    00228     tile += TileOffsByDiagDir(dir);
    00229   } while (IsCompatibleTrainStationTile(tile, start_tile));
    00230
    00231   return length;
    00232 }
    00233
    00237 bool Station::IsBuoy() const
    00238 {
    00239   return (had_vehicle_of_type & HVOT_BUOY) != 0;
    00240 }
    00241
    00245 uint Station::GetCatchmentRadius() const
    00246 {
    00247   uint ret = CA_NONE;
    00248
    00249   if (_settings_game.station.modified_catchment) {
    00250     if (this->bus_stops    != NULL)         ret = max<uint>(ret, CA_BUS);
    00251     if (this->truck_stops  != NULL)         ret = max<uint>(ret, CA_TRUCK);
    00252     if (this->train_tile   != INVALID_TILE) ret = max<uint>(ret, CA_TRAIN);
    00253     if (this->dock_tile    != INVALID_TILE) ret = max<uint>(ret, CA_DOCK);
    00254     if (this->airport_tile != INVALID_TILE) ret = max<uint>(ret, this->Airport()->catchment);
    00255   } else {
    00256     if (this->bus_stops != NULL || this->truck_stops != NULL || this->train_tile != INVALID_TILE || this->dock_tile != INVALID_TILE || this->airport_tile != INVALID_TILE) {
    00257       ret = CA_UNMODIFIED;
    00258     }
    00259   }
    00260
    00261   return ret;
    00262 }
    00263
    00264
    00265 /************************************************************************/
    00266 /*                     StationRect implementation                       */
    00267 /************************************************************************/
    00268
    00269 StationRect::StationRect()
    00270 {
    00271   MakeEmpty();
    00272 }
    00273
    00274 void StationRect::MakeEmpty()
    00275 {
    00276   left = top = right = bottom = 0;
    00277 }
    00278
    00288 bool StationRect::PtInExtendedRect(int x, int y, int distance) const
    00289 {
    00290   return (left - distance <= x && x <= right + distance && top - distance <= y && y <= bottom + distance);
    00291 }
    00292
    00293 bool StationRect::IsEmpty() const
    00294 {
    00295   return (left == 0 || left > right || top > bottom);
    00296 }
    00297
    00298 bool StationRect::BeforeAddTile(TileIndex tile, StationRectMode mode)
    00299 {
    00300   int x = TileX(tile);
    00301   int y = TileY(tile);
    00302   if (IsEmpty()) {
    00303     /* we are adding the first station tile */
    00304     if (mode != ADD_TEST) {
    00305       left = right = x;
    00306       top = bottom = y;
    00307     }
    00308   } else if (!PtInExtendedRect(x, y)) {
    00309     /* current rect is not empty and new point is outside this rect */
    00310     /* make new spread-out rectangle */
    00311     Rect new_rect = {min(x, left), min(y, top), max(x, right), max(y, bottom)};
    00312
    00313     /* check new rect dimensions against preset max */
    00314     int w = new_rect.right - new_rect.left + 1;
    00315     int h = new_rect.bottom - new_rect.top + 1;
    00316     if (mode != ADD_FORCE && (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread)) {
    00317       assert(mode != ADD_TRY);
    00318       _error_message = STR_306C_STATION_TOO_SPREAD_OUT;
    00319       return false;
    00320     }
    00321
    00322     /* spread-out ok, return true */
    00323     if (mode != ADD_TEST) {
    00324       /* we should update the station rect */
    00325       *this = new_rect;
    00326     }
    00327   } else {
    00328     ; // new point is inside the rect, we don't need to do anything
    00329   }
    00330   return true;
    00331 }
    00332
    00333 bool StationRect::BeforeAddRect(TileIndex tile, int w, int h, StationRectMode mode)
    00334 {
    00335   return (mode == ADD_FORCE || (w <= _settings_game.station.station_spread && h <= _settings_game.station.station_spread)) && // important when the old rect is completely inside the new rect, resp. the old one was empty
    00336       BeforeAddTile(tile, mode) && BeforeAddTile(TILE_ADDXY(tile, w - 1, h - 1), mode);
    00337 }
    00338
    00348 /*static*/ bool StationRect::ScanForStationTiles(StationID st_id, int left_a, int top_a, int right_a, int bottom_a)
    00349 {
    00350   TileIndex top_left = TileXY(left_a, top_a);
    00351   int width = right_a - left_a + 1;
    00352   int height = bottom_a - top_a + 1;
    00353
    00354   BEGIN_TILE_LOOP(tile, width, height, top_left)
    00355     if (IsTileType(tile, MP_STATION) && GetStationIndex(tile) == st_id) return true;
    00356   END_TILE_LOOP(tile, width, height, top_left);
    00357
    00358   return false;
    00359 }
    00360
    00361 bool StationRect::AfterRemoveTile(Station *st, TileIndex tile)
    00362 {
    00363   int x = TileX(tile);
    00364   int y = TileY(tile);
    00365
    00366   /* look if removed tile was on the bounding rect edge
    00367    * and try to reduce the rect by this edge
    00368    * do it until we have empty rect or nothing to do */
    00369   for (;;) {
    00370     /* check if removed tile is on rect edge */
    00371     bool left_edge = (x == left);
    00372     bool right_edge = (x == right);
    00373     bool top_edge = (y == top);
    00374     bool bottom_edge = (y == bottom);
    00375
    00376     /* can we reduce the rect in either direction? */
    00377     bool reduce_x = ((left_edge || right_edge) && !ScanForStationTiles(st->index, x, top, x, bottom));
    00378     bool reduce_y = ((top_edge || bottom_edge) && !ScanForStationTiles(st->index, left, y, right, y));
    00379     if (!(reduce_x || reduce_y)) break; // nothing to do (can't reduce)
    00380
    00381     if (reduce_x) {
    00382       /* reduce horizontally */
    00383       if (left_edge) {
    00384         /* move left edge right */
    00385         left = x = x + 1;
    00386       } else {
    00387         /* move right edge left */
    00388         right = x = x - 1;
    00389       }
    00390     }
    00391     if (reduce_y) {
    00392       /* reduce vertically */
    00393       if (top_edge) {
    00394         /* move top edge down */
    00395         top = y = y + 1;
    00396       } else {
    00397         /* move bottom edge up */
    00398         bottom = y = y - 1;
    00399       }
    00400     }
    00401
    00402     if (left > right || top > bottom) {
    00403       /* can't continue, if the remaining rectangle is empty */
    00404       MakeEmpty();
    00405       return true; // empty remaining rect
    00406     }
    00407   }
    00408   return false; // non-empty remaining rect
    00409 }
    00410
    00411 bool StationRect::AfterRemoveRect(Station *st, TileIndex tile, int w, int h)
    00412 {
    00413   assert(PtInExtendedRect(TileX(tile), TileY(tile)));
    00414   assert(PtInExtendedRect(TileX(tile) + w - 1, TileY(tile) + h - 1));
    00415
    00416   bool empty = AfterRemoveTile(st, tile);
    00417   if (w != 1 || h != 1) empty = empty || AfterRemoveTile(st, TILE_ADDXY(tile, w - 1, h - 1));
    00418   return empty;
    00419 }
    00420
    00421 StationRect& StationRect::operator = (Rect src)
    00422 {
    00423   left = src.left;
    00424   top = src.top;
    00425   right = src.right;
    00426   bottom = src.bottom;
    00427   return *this;
    00428 }
    00429
    00430
    00431 /************************************************************************/
    00432 /*                     RoadStop implementation                          */
    00433 /************************************************************************/
    00434
    00436 RoadStop::RoadStop(TileIndex tile) :
    00437   xy(tile),
    00438   status(3), // stop is free
    00439   num_vehicles(0),
    00440   next(NULL)
    00441 {
    00442   DEBUG(ms, cDebugCtorLevel,  "I+ at %d[0x%x]", tile, tile);
    00443 }
    00444
    00448 RoadStop::~RoadStop()
    00449 {
    00450   if (CleaningPool()) return;
    00451
    00452   /* Clear the slot assignment of all vehicles heading for this road stop */
    00453   if (num_vehicles != 0) {
    00454     Vehicle *v;
    00455
    00456     FOR_ALL_VEHICLES(v) {
    00457       if (v->type == VEH_ROAD && v->u.road.slot == this) ClearSlot(v);
    00458     }
    00459   }
    00460   assert(num_vehicles == 0);
    00461
    00462   DEBUG(ms, cDebugCtorLevel , "I- at %d[0x%x]", xy, xy);
    00463
    00464   xy = INVALID_TILE;
    00465 }
    00466
    00468 bool RoadStop::HasFreeBay() const
    00469 {
    00470   return GB(status, 0, MAX_BAY_COUNT) != 0;
    00471 }
    00472
    00474 bool RoadStop::IsFreeBay(uint nr) const
    00475 {
    00476   assert(nr < MAX_BAY_COUNT);
    00477   return HasBit(status, nr);
    00478 }
    00479
    00485 uint RoadStop::AllocateBay()
    00486 {
    00487   assert(HasFreeBay());
    00488
    00489   /* Find the first free bay. If the bit is set, the bay is free. */
    00490   uint bay_nr = 0;
    00491   while (!HasBit(status, bay_nr)) bay_nr++;
    00492
    00493   ClrBit(status, bay_nr);
    00494   return bay_nr;
    00495 }
    00496
    00501 void RoadStop::AllocateDriveThroughBay(uint nr)
    00502 {
    00503   assert(nr < MAX_BAY_COUNT);
    00504   ClrBit(status, nr);
    00505 }
    00506
    00511 void RoadStop::FreeBay(uint nr)
    00512 {
    00513   assert(nr < MAX_BAY_COUNT);
    00514   SetBit(status, nr);
    00515 }
    00516
    00517
    00519 bool RoadStop::IsEntranceBusy() const
    00520 {
    00521   return HasBit(status, 7);
    00522 }
    00523
    00525 void RoadStop::SetEntranceBusy(bool busy)
    00526 {
    00527   SB(status, 7, 1, busy);
    00528 }
    00529
    00535 RoadStop *RoadStop::GetNextRoadStop(const Vehicle *v) const
    00536 {
    00537   for (RoadStop *rs = this->next; rs != NULL; rs = rs->next) {
    00538     /* The vehicle cannot go to this roadstop (different roadtype) */
    00539     if ((GetRoadTypes(rs->xy) & v->u.road.compatible_roadtypes) == ROADTYPES_NONE) continue;
    00540     /* The vehicle is articulated and can therefor not go the a standard road stop */
    00541     if (IsStandardRoadStopTile(rs->xy) && RoadVehHasArticPart(v)) continue;
    00542
    00543     /* The vehicle can actually go to this road stop. So, return it! */
    00544     return rs;
    00545   }
    00546
    00547   return NULL;
    00548 }