ship_cmd.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * 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.
00006  * 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.
00007  * 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/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "ship.h"
00014 #include "landscape.h"
00015 #include "timetable.h"
00016 #include "news_func.h"
00017 #include "company_func.h"
00018 #include "pathfinder/npf/npf_func.h"
00019 #include "depot_base.h"
00020 #include "station_base.h"
00021 #include "vehicle_gui.h"
00022 #include "newgrf_engine.h"
00023 #include "pathfinder/yapf/yapf.h"
00024 #include "newgrf_sound.h"
00025 #include "spritecache.h"
00026 #include "strings_func.h"
00027 #include "functions.h"
00028 #include "window_func.h"
00029 #include "date_func.h"
00030 #include "vehicle_func.h"
00031 #include "sound_func.h"
00032 #include "ai/ai.hpp"
00033 #include "pathfinder/opf/opf_ship.h"
00034 #include "engine_base.h"
00035 #include "company_base.h"
00036 
00037 #include "table/strings.h"
00038 
00039 static const uint16 _ship_sprites[] = {0x0E5D, 0x0E55, 0x0E65, 0x0E6D};
00040 
00041 static inline TrackBits GetTileShipTrackStatus(TileIndex tile)
00042 {
00043   return TrackStatusToTrackBits(GetTileTrackStatus(tile, TRANSPORT_WATER, 0));
00044 }
00045 
00046 static SpriteID GetShipIcon(EngineID engine)
00047 {
00048   const Engine *e = Engine::Get(engine);
00049   uint8 spritenum = e->u.ship.image_index;
00050 
00051   if (is_custom_sprite(spritenum)) {
00052     SpriteID sprite = GetCustomVehicleIcon(engine, DIR_W);
00053     if (sprite != 0) return sprite;
00054 
00055     spritenum = e->original_image_index;
00056   }
00057 
00058   return DIR_W + _ship_sprites[spritenum];
00059 }
00060 
00061 void DrawShipEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal)
00062 {
00063   SpriteID sprite = GetShipIcon(engine);
00064   const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00065   preferred_x = Clamp(preferred_x, left - real_sprite->x_offs, right - real_sprite->width - real_sprite->x_offs);
00066   DrawSprite(sprite, pal, preferred_x, y);
00067 }
00068 
00075 void GetShipSpriteSize(EngineID engine, uint &width, uint &height)
00076 {
00077   const Sprite *spr = GetSprite(GetShipIcon(engine), ST_NORMAL);
00078 
00079   width  = spr->width;
00080   height = spr->height;
00081 }
00082 
00083 SpriteID Ship::GetImage(Direction direction) const
00084 {
00085   uint8 spritenum = this->spritenum;
00086 
00087   if (is_custom_sprite(spritenum)) {
00088     SpriteID sprite = GetCustomVehicleSprite(this, direction);
00089     if (sprite != 0) return sprite;
00090 
00091     spritenum = Engine::Get(this->engine_type)->original_image_index;
00092   }
00093 
00094   return _ship_sprites[spritenum] + direction;
00095 }
00096 
00097 static const Depot *FindClosestShipDepot(const Vehicle *v, uint max_distance)
00098 {
00099   /* Find the closest depot */
00100   const Depot *depot;
00101   const Depot *best_depot = NULL;
00102   /* If we don't have a maximum distance, i.e. distance = 0,
00103    * we want to find any depot so the best distance of no
00104    * depot must be more than any correct distance. On the
00105    * other hand if we have set a maximum distance, any depot
00106    * further away than max_distance can safely be ignored. */
00107   uint best_dist = max_distance == 0 ? UINT_MAX : max_distance + 1;
00108 
00109   FOR_ALL_DEPOTS(depot) {
00110     TileIndex tile = depot->xy;
00111     if (IsShipDepotTile(tile) && IsTileOwner(tile, v->owner)) {
00112       uint dist = DistanceManhattan(tile, v->tile);
00113       if (dist < best_dist) {
00114         best_dist = dist;
00115         best_depot = depot;
00116       }
00117     }
00118   }
00119 
00120   return best_depot;
00121 }
00122 
00123 static void CheckIfShipNeedsService(Vehicle *v)
00124 {
00125   if (Company::Get(v->owner)->settings.vehicle.servint_ships == 0 || !v->NeedsAutomaticServicing()) return;
00126   if (v->IsInDepot()) {
00127     VehicleServiceInDepot(v);
00128     return;
00129   }
00130 
00131   uint max_distance;
00132   switch (_settings_game.pf.pathfinder_for_ships) {
00133     case VPF_OPF:  max_distance = 12; break;
00134     case VPF_NPF:  max_distance = _settings_game.pf.npf.maximum_go_to_depot_penalty  / NPF_TILE_LENGTH;  break;
00135     case VPF_YAPF: max_distance = _settings_game.pf.yapf.maximum_go_to_depot_penalty / YAPF_TILE_LENGTH; break;
00136     default: NOT_REACHED();
00137   }
00138 
00139   const Depot *depot = FindClosestShipDepot(v, max_distance);
00140 
00141   if (depot == NULL) {
00142     if (v->current_order.IsType(OT_GOTO_DEPOT)) {
00143       v->current_order.MakeDummy();
00144       SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
00145     }
00146     return;
00147   }
00148 
00149   v->current_order.MakeGoToDepot(depot->index, ODTFB_SERVICE);
00150   v->dest_tile = depot->xy;
00151   SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
00152 }
00153 
00154 void Ship::UpdateCache()
00155 {
00156   this->vcache.cached_max_speed = GetVehicleProperty(this, PROP_SHIP_SPEED, ShipVehInfo(this->engine_type)->max_speed);
00157 
00158   this->UpdateVisualEffect();
00159 }
00160 
00161 Money Ship::GetRunningCost() const
00162 {
00163   const Engine *e = Engine::Get(this->engine_type);
00164   uint cost_factor = GetVehicleProperty(this, PROP_SHIP_RUNNING_COST_FACTOR, e->u.ship.running_cost);
00165   return GetPrice(PR_RUNNING_SHIP, cost_factor, e->grf_prop.grffile);
00166 }
00167 
00168 void Ship::OnNewDay()
00169 {
00170   if ((++this->day_counter & 7) == 0) {
00171     DecreaseVehicleValue(this);
00172   }
00173 
00174   CheckVehicleBreakdown(this);
00175   AgeVehicle(this);
00176   CheckIfShipNeedsService(this);
00177 
00178   CheckOrders(this);
00179 
00180   if (this->running_ticks == 0) return;
00181 
00182   CommandCost cost(EXPENSES_SHIP_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
00183 
00184   this->profit_this_year -= cost.GetCost();
00185   this->running_ticks = 0;
00186 
00187   SubtractMoneyFromCompanyFract(this->owner, cost);
00188 
00189   SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00190   /* we need this for the profit */
00191   SetWindowClassesDirty(WC_SHIPS_LIST);
00192 }
00193 
00194 Trackdir Ship::GetVehicleTrackdir() const
00195 {
00196   if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
00197 
00198   if (this->IsInDepot()) {
00199     /* We'll assume the ship is facing outwards */
00200     return DiagDirToDiagTrackdir(GetShipDepotDirection(this->tile));
00201   }
00202 
00203   if (this->state == TRACK_BIT_WORMHOLE) {
00204     /* ship on aqueduct, so just use his direction and assume a diagonal track */
00205     return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
00206   }
00207 
00208   return TrackDirectionToTrackdir(FindFirstTrack(this->state), this->direction);
00209 }
00210 
00211 void Ship::MarkDirty()
00212 {
00213   this->UpdateViewport(false, false);
00214   this->UpdateCache();
00215 }
00216 
00217 static void PlayShipSound(const Vehicle *v)
00218 {
00219   if (!PlayVehicleSound(v, VSE_START)) {
00220     SndPlayVehicleFx(ShipVehInfo(v->engine_type)->sfx, v);
00221   }
00222 }
00223 
00224 void Ship::PlayLeaveStationSound() const
00225 {
00226   PlayShipSound(this);
00227 }
00228 
00229 TileIndex Ship::GetOrderStationLocation(StationID station)
00230 {
00231   if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
00232 
00233   const Station *st = Station::Get(station);
00234   if (st->dock_tile != INVALID_TILE) {
00235     return TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
00236   } else {
00237     this->IncrementOrderIndex();
00238     return 0;
00239   }
00240 }
00241 
00242 void Ship::UpdateDeltaXY(Direction direction)
00243 {
00244 #define MKIT(a, b, c, d) ((a & 0xFF) << 24) | ((b & 0xFF) << 16) | ((c & 0xFF) << 8) | ((d & 0xFF) << 0)
00245   static const uint32 _delta_xy_table[8] = {
00246     MKIT( 6,  6,  -3,  -3),
00247     MKIT( 6, 32,  -3, -16),
00248     MKIT( 6,  6,  -3,  -3),
00249     MKIT(32,  6, -16,  -3),
00250     MKIT( 6,  6,  -3,  -3),
00251     MKIT( 6, 32,  -3, -16),
00252     MKIT( 6,  6,  -3,  -3),
00253     MKIT(32,  6, -16,  -3),
00254   };
00255 #undef MKIT
00256 
00257   uint32 x = _delta_xy_table[direction];
00258   this->x_offs        = GB(x,  0, 8);
00259   this->y_offs        = GB(x,  8, 8);
00260   this->x_extent      = GB(x, 16, 8);
00261   this->y_extent      = GB(x, 24, 8);
00262   this->z_extent      = 6;
00263 }
00264 
00265 static const TileIndexDiffC _ship_leave_depot_offs[] = {
00266   {-1,  0},
00267   { 0, -1}
00268 };
00269 
00270 static void CheckShipLeaveDepot(Ship *v)
00271 {
00272   if (!v->IsInDepot()) return;
00273 
00274   TileIndex tile = v->tile;
00275   Axis axis = GetShipDepotAxis(tile);
00276 
00277   /* Check first (north) side */
00278   if (DiagdirReachesTracks((DiagDirection)axis) & GetTileShipTrackStatus(TILE_ADD(tile, ToTileIndexDiff(_ship_leave_depot_offs[axis])))) {
00279     v->direction = ReverseDir(AxisToDirection(axis));
00280   /* Check second (south) side */
00281   } else if (DiagdirReachesTracks((DiagDirection)(axis + 2)) & GetTileShipTrackStatus(TILE_ADD(tile, -2 * ToTileIndexDiff(_ship_leave_depot_offs[axis])))) {
00282     v->direction = AxisToDirection(axis);
00283   } else {
00284     return;
00285   }
00286 
00287   v->state = AxisToTrackBits(axis);
00288   v->vehstatus &= ~VS_HIDDEN;
00289 
00290   v->cur_speed = 0;
00291   v->UpdateViewport(false, true);
00292   SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
00293 
00294   PlayShipSound(v);
00295   VehicleServiceInDepot(v);
00296   InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00297   SetWindowClassesDirty(WC_SHIPS_LIST);
00298 }
00299 
00300 static bool ShipAccelerate(Vehicle *v)
00301 {
00302   uint spd;
00303   byte t;
00304 
00305   spd = min(v->cur_speed + 1, v->vcache.cached_max_speed);
00306 
00307   /* updates statusbar only if speed have changed to save CPU time */
00308   if (spd != v->cur_speed) {
00309     v->cur_speed = spd;
00310     if (_settings_client.gui.vehicle_speed) {
00311       SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
00312     }
00313   }
00314 
00315   /* Convert direction-indepenent speed into direction-dependent speed. (old movement method) */
00316   spd = v->GetOldAdvanceSpeed(spd);
00317 
00318   if (spd == 0) return false;
00319   if ((byte)++spd == 0) return true;
00320 
00321   v->progress = (t = v->progress) - (byte)spd;
00322 
00323   return (t < v->progress);
00324 }
00325 
00331 static void ShipArrivesAt(const Vehicle *v, Station *st)
00332 {
00333   /* Check if station was ever visited before */
00334   if (!(st->had_vehicle_of_type & HVOT_SHIP)) {
00335     st->had_vehicle_of_type |= HVOT_SHIP;
00336 
00337     SetDParam(0, st->index);
00338     AddVehicleNewsItem(
00339       STR_NEWS_FIRST_SHIP_ARRIVAL,
00340       (v->owner == _local_company) ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
00341       v->index,
00342       st->index
00343     );
00344     AI::NewEvent(v->owner, new AIEventStationFirstVehicle(st->index, v->index));
00345   }
00346 }
00347 
00348 
00354 static Track ChooseShipTrack(Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks)
00355 {
00356   assert(IsValidDiagDirection(enterdir));
00357 
00358   bool path_found = true;
00359   Track track;
00360   switch (_settings_game.pf.pathfinder_for_ships) {
00361     case VPF_OPF: track = OPFShipChooseTrack(v, tile, enterdir, tracks, path_found); break;
00362     case VPF_NPF: track = NPFShipChooseTrack(v, tile, enterdir, tracks, path_found); break;
00363     case VPF_YAPF: track = YapfShipChooseTrack(v, tile, enterdir, tracks, path_found); break;
00364     default: NOT_REACHED();
00365   }
00366 
00367   v->HandlePathfindingResult(path_found);
00368   return track;
00369 }
00370 
00371 static const Direction _new_vehicle_direction_table[] = {
00372   DIR_N , DIR_NW, DIR_W , INVALID_DIR,
00373   DIR_NE, DIR_N , DIR_SW, INVALID_DIR,
00374   DIR_E , DIR_SE, DIR_S
00375 };
00376 
00377 static Direction ShipGetNewDirectionFromTiles(TileIndex new_tile, TileIndex old_tile)
00378 {
00379   uint offs = (TileY(new_tile) - TileY(old_tile) + 1) * 4 +
00380               TileX(new_tile) - TileX(old_tile) + 1;
00381   assert(offs < 11 && offs != 3 && offs != 7);
00382   return _new_vehicle_direction_table[offs];
00383 }
00384 
00385 static Direction ShipGetNewDirection(Vehicle *v, int x, int y)
00386 {
00387   uint offs = (y - v->y_pos + 1) * 4 + (x - v->x_pos + 1);
00388   assert(offs < 11 && offs != 3 && offs != 7);
00389   return _new_vehicle_direction_table[offs];
00390 }
00391 
00392 static inline TrackBits GetAvailShipTracks(TileIndex tile, DiagDirection dir)
00393 {
00394   return GetTileShipTrackStatus(tile) & DiagdirReachesTracks(dir);
00395 }
00396 
00397 static const byte _ship_subcoord[4][6][3] = {
00398   {
00399     {15, 8, 1},
00400     { 0, 0, 0},
00401     { 0, 0, 0},
00402     {15, 8, 2},
00403     {15, 7, 0},
00404     { 0, 0, 0},
00405   },
00406   {
00407     { 0, 0, 0},
00408     { 8, 0, 3},
00409     { 7, 0, 2},
00410     { 0, 0, 0},
00411     { 8, 0, 4},
00412     { 0, 0, 0},
00413   },
00414   {
00415     { 0, 8, 5},
00416     { 0, 0, 0},
00417     { 0, 7, 6},
00418     { 0, 0, 0},
00419     { 0, 0, 0},
00420     { 0, 8, 4},
00421   },
00422   {
00423     { 0, 0, 0},
00424     { 8, 15, 7},
00425     { 0, 0, 0},
00426     { 8, 15, 6},
00427     { 0, 0, 0},
00428     { 7, 15, 0},
00429   }
00430 };
00431 
00432 static void ShipController(Ship *v)
00433 {
00434   uint32 r;
00435   const byte *b;
00436   Direction dir;
00437   Track track;
00438   TrackBits tracks;
00439 
00440   v->tick_counter++;
00441   v->current_order_time++;
00442 
00443   if (v->HandleBreakdown()) return;
00444 
00445   if (v->vehstatus & VS_STOPPED) return;
00446 
00447   ProcessOrders(v);
00448   v->HandleLoading();
00449 
00450   if (v->current_order.IsType(OT_LOADING)) return;
00451 
00452   CheckShipLeaveDepot(v);
00453 
00454   v->ShowVisualEffect();
00455 
00456   if (!ShipAccelerate(v)) return;
00457 
00458   GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00459   if (v->state != TRACK_BIT_WORMHOLE) {
00460     /* Not on a bridge */
00461     if (gp.old_tile == gp.new_tile) {
00462       /* Staying in tile */
00463       if (v->IsInDepot()) {
00464         gp.x = v->x_pos;
00465         gp.y = v->y_pos;
00466       } else {
00467         /* Not inside depot */
00468         r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
00469         if (HasBit(r, VETS_CANNOT_ENTER)) goto reverse_direction;
00470 
00471         /* A leave station order only needs one tick to get processed, so we can
00472          * always skip ahead. */
00473         if (v->current_order.IsType(OT_LEAVESTATION)) {
00474           v->current_order.Free();
00475           SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
00476         } else if (v->dest_tile != 0) {
00477           /* We have a target, let's see if we reached it... */
00478           if (v->current_order.IsType(OT_GOTO_WAYPOINT) &&
00479               DistanceManhattan(v->dest_tile, gp.new_tile) <= 3) {
00480             /* We got within 3 tiles of our target buoy, so let's skip to our
00481              * next order */
00482             UpdateVehicleTimetable(v, true);
00483             v->IncrementOrderIndex();
00484             v->current_order.MakeDummy();
00485           } else {
00486             /* Non-buoy orders really need to reach the tile */
00487             if (v->dest_tile == gp.new_tile) {
00488               if (v->current_order.IsType(OT_GOTO_DEPOT)) {
00489                 if ((gp.x & 0xF) == 8 && (gp.y & 0xF) == 8) {
00490                   VehicleEnterDepot(v);
00491                   return;
00492                 }
00493               } else if (v->current_order.IsType(OT_GOTO_STATION)) {
00494                 v->last_station_visited = v->current_order.GetDestination();
00495 
00496                 /* Process station in the orderlist. */
00497                 Station *st = Station::Get(v->current_order.GetDestination());
00498                 if (st->facilities & FACIL_DOCK) { // ugly, ugly workaround for problem with ships able to drop off cargo at wrong stations
00499                   ShipArrivesAt(v, st);
00500                   v->BeginLoading();
00501                 } else { // leave stations without docks right aways
00502                   v->current_order.MakeLeaveStation();
00503                   v->IncrementOrderIndex();
00504                 }
00505               }
00506             }
00507           }
00508         }
00509       }
00510     } else {
00511       DiagDirection diagdir;
00512       /* New tile */
00513       if (TileX(gp.new_tile) >= MapMaxX() || TileY(gp.new_tile) >= MapMaxY()) {
00514         goto reverse_direction;
00515       }
00516 
00517       dir = ShipGetNewDirectionFromTiles(gp.new_tile, gp.old_tile);
00518       assert(dir == DIR_NE || dir == DIR_SE || dir == DIR_SW || dir == DIR_NW);
00519       diagdir = DirToDiagDir(dir);
00520       tracks = GetAvailShipTracks(gp.new_tile, diagdir);
00521       if (tracks == TRACK_BIT_NONE) goto reverse_direction;
00522 
00523       /* Choose a direction, and continue if we find one */
00524       track = ChooseShipTrack(v, gp.new_tile, diagdir, tracks);
00525       if (track == INVALID_TRACK) goto reverse_direction;
00526 
00527       b = _ship_subcoord[diagdir][track];
00528 
00529       gp.x = (gp.x & ~0xF) | b[0];
00530       gp.y = (gp.y & ~0xF) | b[1];
00531 
00532       /* Call the landscape function and tell it that the vehicle entered the tile */
00533       r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
00534       if (HasBit(r, VETS_CANNOT_ENTER)) goto reverse_direction;
00535 
00536       if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
00537         v->tile = gp.new_tile;
00538         v->state = TrackToTrackBits(track);
00539       }
00540 
00541       v->direction = (Direction)b[2];
00542     }
00543   } else {
00544     /* On a bridge */
00545     if (!IsTileType(gp.new_tile, MP_TUNNELBRIDGE) || !HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
00546       v->x_pos = gp.x;
00547       v->y_pos = gp.y;
00548       VehicleMove(v, !(v->vehstatus & VS_HIDDEN));
00549       return;
00550     }
00551   }
00552 
00553   /* update image of ship, as well as delta XY */
00554   dir = ShipGetNewDirection(v, gp.x, gp.y);
00555   v->x_pos = gp.x;
00556   v->y_pos = gp.y;
00557   v->z_pos = GetSlopeZ(gp.x, gp.y);
00558 
00559 getout:
00560   v->UpdateViewport(true, true);
00561   return;
00562 
00563 reverse_direction:
00564   dir = ReverseDir(v->direction);
00565   v->direction = dir;
00566   goto getout;
00567 }
00568 
00569 bool Ship::Tick()
00570 {
00571   if (!(this->vehstatus & VS_STOPPED)) this->running_ticks++;
00572 
00573   ShipController(this);
00574 
00575   return true;
00576 }
00577 
00587 CommandCost CmdBuildShip(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00588 {
00589   tile = GetShipDepotNorthTile(tile);
00590   if (flags & DC_EXEC) {
00591     int x;
00592     int y;
00593 
00594     const ShipVehicleInfo *svi = &e->u.ship;
00595 
00596     Ship *v = new Ship();
00597     *ret = v;
00598 
00599     v->owner = _current_company;
00600     v->tile = tile;
00601     x = TileX(tile) * TILE_SIZE + TILE_SIZE / 2;
00602     y = TileY(tile) * TILE_SIZE + TILE_SIZE / 2;
00603     v->x_pos = x;
00604     v->y_pos = y;
00605     v->z_pos = GetSlopeZ(x, y);
00606 
00607     v->UpdateDeltaXY(v->direction);
00608     v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00609 
00610     v->spritenum = svi->image_index;
00611     v->cargo_type = e->GetDefaultCargoType();
00612     v->cargo_cap = svi->capacity;
00613 
00614     v->last_station_visited = INVALID_STATION;
00615     v->engine_type = e->index;
00616 
00617     v->reliability = e->reliability;
00618     v->reliability_spd_dec = e->reliability_spd_dec;
00619     v->max_age = e->GetLifeLengthInDays();
00620     _new_vehicle_id = v->index;
00621 
00622     v->state = TRACK_BIT_DEPOT;
00623 
00624     v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_ships;
00625     v->date_of_last_service = _date;
00626     v->build_year = _cur_year;
00627     v->cur_image = SPR_IMG_QUERY;
00628     v->random_bits = VehicleRandomBits();
00629 
00630     v->UpdateCache();
00631 
00632     if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00633 
00634     v->InvalidateNewGRFCacheOfChain();
00635 
00636     v->cargo_cap = GetVehicleCapacity(v);
00637 
00638     v->InvalidateNewGRFCacheOfChain();
00639 
00640     VehicleMove(v, false);
00641   }
00642 
00643   return CommandCost();
00644 }
00645 
00646 bool Ship::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
00647 {
00648   const Depot *depot = FindClosestShipDepot(this, 0);
00649 
00650   if (depot == NULL) return false;
00651 
00652   if (location    != NULL) *location    = depot->xy;
00653   if (destination != NULL) *destination = depot->index;
00654 
00655   return true;
00656 }

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