# ship_cmd.cpp

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    00001 /* $Id: ship_cmd.cpp 19091 2010-02-10 21:28:26Z rubidium $ */
    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 "command_func.h"
    00017 #include "news_func.h"
    00018 #include "company_func.h"
    00019 #include "pathfinder/npf/npf_func.h"
    00020 #include "depot_base.h"
    00021 #include "station_base.h"
    00022 #include "vehicle_gui.h"
    00023 #include "newgrf_engine.h"
    00024 #include "pathfinder/yapf/yapf.h"
    00025 #include "newgrf_sound.h"
    00026 #include "spritecache.h"
    00027 #include "strings_func.h"
    00028 #include "functions.h"
    00029 #include "window_func.h"
    00030 #include "date_func.h"
    00031 #include "vehicle_func.h"
    00032 #include "sound_func.h"
    00033 #include "autoreplace_gui.h"
    00034 #include "effectvehicle_func.h"
    00035 #include "effectvehicle_base.h"
    00036 #include "ai/ai.hpp"
    00037 #include "pathfinder/opf/opf_ship.h"
    00038 #include "landscape_type.h"
    00039 #include "engine_base.h"
    00040 #include "engine_func.h"
    00041 #include "company_base.h"
    00042
    00043 #include "table/strings.h"
    00044 #include "table/sprites.h"
    00045
    00046 static const uint16 _ship_sprites[] = {0x0E5D, 0x0E55, 0x0E65, 0x0E6D};
    00047
    00048 static inline TrackBits GetTileShipTrackStatus(TileIndex tile)
    00049 {
    00050   return TrackStatusToTrackBits(GetTileTrackStatus(tile, TRANSPORT_WATER, 0));
    00051 }
    00052
    00053 static SpriteID GetShipIcon(EngineID engine)
    00054 {
    00055   const Engine *e = Engine::Get(engine);
    00056   uint8 spritenum = e->u.ship.image_index;
    00057
    00058   if (is_custom_sprite(spritenum)) {
    00059     SpriteID sprite = GetCustomVehicleIcon(engine, DIR_W);
    00060     if (sprite != 0) return sprite;
    00061
    00062     spritenum = e->original_image_index;
    00063   }
    00064
    00065   return DIR_W + _ship_sprites[spritenum];
    00066 }
    00067
    00068 void DrawShipEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal)
    00069 {
    00070   SpriteID sprite = GetShipIcon(engine);
    00071   const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
    00072   preferred_x = Clamp(preferred_x, left - real_sprite->x_offs, right - real_sprite->width - real_sprite->x_offs);
    00073   DrawSprite(sprite, pal, preferred_x, y);
    00074 }
    00075
    00081 void GetShipSpriteSize(EngineID engine, uint &width, uint &height)
    00082 {
    00083   const Sprite *spr = GetSprite(GetShipIcon(engine), ST_NORMAL);
    00084
    00085   width  = spr->width;
    00086   height = spr->height;
    00087 }
    00088
    00089 SpriteID Ship::GetImage(Direction direction) const
    00090 {
    00091   uint8 spritenum = this->spritenum;
    00092
    00093   if (is_custom_sprite(spritenum)) {
    00094     SpriteID sprite = GetCustomVehicleSprite(this, direction);
    00095     if (sprite != 0) return sprite;
    00096
    00097     spritenum = Engine::Get(this->engine_type)->original_image_index;
    00098   }
    00099
    00100   return _ship_sprites[spritenum] + direction;
    00101 }
    00102
    00103 static const Depot *FindClosestShipDepot(const Vehicle *v, uint max_distance)
    00104 {
    00105   /* Find the closest depot */
    00106   const Depot *depot;
    00107   const Depot *best_depot = NULL;
    00108   /* If we don't have a maximum distance, i.e. distance = 0,
    00109    * we want to find any depot so the best distance of no
    00110    * depot must be more than any correct distance. On the
    00111    * other hand if we have set a maximum distance, any depot
    00112    * further away than max_distance can safely be ignored. */
    00113   uint best_dist = max_distance == 0 ? UINT_MAX : max_distance + 1;
    00114
    00115   FOR_ALL_DEPOTS(depot) {
    00116     TileIndex tile = depot->xy;
    00117     if (IsShipDepotTile(tile) && IsTileOwner(tile, v->owner)) {
    00118       uint dist = DistanceManhattan(tile, v->tile);
    00119       if (dist < best_dist) {
    00120         best_dist = dist;
    00121         best_depot = depot;
    00122       }
    00123     }
    00124   }
    00125
    00126   return best_depot;
    00127 }
    00128
    00129 static void CheckIfShipNeedsService(Vehicle *v)
    00130 {
    00131   if (Company::Get(v->owner)->settings.vehicle.servint_ships == 0 || !v->NeedsAutomaticServicing()) return;
    00132   if (v->IsInDepot()) {
    00133     VehicleServiceInDepot(v);
    00134     return;
    00135   }
    00136
    00137   uint max_distance;
    00138   switch (_settings_game.pf.pathfinder_for_ships) {
    00139     case VPF_OPF:  max_distance = 12; break;
    00140     case VPF_NPF:  max_distance = _settings_game.pf.npf.maximum_go_to_depot_penalty  / NPF_TILE_LENGTH;  break;
    00141     case VPF_YAPF: max_distance = _settings_game.pf.yapf.maximum_go_to_depot_penalty / YAPF_TILE_LENGTH; break;
    00142     default: NOT_REACHED();
    00143   }
    00144
    00145   const Depot *depot = FindClosestShipDepot(v, max_distance);
    00146
    00147   if (depot == NULL) {
    00148     if (v->current_order.IsType(OT_GOTO_DEPOT)) {
    00149       v->current_order.MakeDummy();
    00150       SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
    00151     }
    00152     return;
    00153   }
    00154
    00155   v->current_order.MakeGoToDepot(depot->index, ODTFB_SERVICE);
    00156   v->dest_tile = depot->xy;
    00157   SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
    00158 }
    00159
    00160 Money Ship::GetRunningCost() const
    00161 {
    00162   const Engine *e = Engine::Get(this->engine_type);
    00163   uint cost_factor = GetVehicleProperty(this, PROP_SHIP_RUNNING_COST_FACTOR, e->u.ship.running_cost);
    00164   return GetPrice(PR_RUNNING_SHIP, cost_factor, e->grffile);
    00165 }
    00166
    00167 void Ship::OnNewDay()
    00168 {
    00169   if ((++this->day_counter & 7) == 0)
    00170     DecreaseVehicleValue(this);
    00171
    00172   CheckVehicleBreakdown(this);
    00173   AgeVehicle(this);
    00174   CheckIfShipNeedsService(this);
    00175
    00176   CheckOrders(this);
    00177
    00178   if (this->running_ticks == 0) return;
    00179
    00180   CommandCost cost(EXPENSES_SHIP_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
    00181
    00182   this->profit_this_year -= cost.GetCost();
    00183   this->running_ticks = 0;
    00184
    00185   SubtractMoneyFromCompanyFract(this->owner, cost);
    00186
    00187   SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
    00188   /* we need this for the profit */
    00189   SetWindowClassesDirty(WC_SHIPS_LIST);
    00190 }
    00191
    00192 Trackdir Ship::GetVehicleTrackdir() const
    00193 {
    00194   if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
    00195
    00196   if (this->IsInDepot()) {
    00197     /* We'll assume the ship is facing outwards */
    00198     return DiagDirToDiagTrackdir(GetShipDepotDirection(this->tile));
    00199   }
    00200
    00201   if (this->state == TRACK_BIT_WORMHOLE) {
    00202     /* ship on aqueduct, so just use his direction and assume a diagonal track */
    00203     return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
    00204   }
    00205
    00206   return TrackDirectionToTrackdir(FindFirstTrack(this->state), this->direction);
    00207 }
    00208
    00209 static void HandleBrokenShip(Vehicle *v)
    00210 {
    00211   if (v->breakdown_ctr != 1) {
    00212     v->breakdown_ctr = 1;
    00213     v->cur_speed = 0;
    00214
    00215     if (v->breakdowns_since_last_service != 255)
    00216       v->breakdowns_since_last_service++;
    00217
    00218     v->MarkDirty();
    00219     SetWindowDirty(WC_VEHICLE_VIEW, v->index);
    00220     SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
    00221
    00222     if (!PlayVehicleSound(v, VSE_BREAKDOWN)) {
    00223       SndPlayVehicleFx((_settings_game.game_creation.landscape != LT_TOYLAND) ?
    00224         SND_10_TRAIN_BREAKDOWN : SND_3A_COMEDY_BREAKDOWN_2, v);
    00225     }
    00226
    00227     if (!(v->vehstatus & VS_HIDDEN)) {
    00228       EffectVehicle *u = CreateEffectVehicleRel(v, 4, 4, 5, EV_BREAKDOWN_SMOKE);
    00229       if (u != NULL) u->animation_state = v->breakdown_delay * 2;
    00230     }
    00231   }
    00232
    00233   if (!(v->tick_counter & 1)) {
    00234     if (!--v->breakdown_delay) {
    00235       v->breakdown_ctr = 0;
    00236       v->MarkDirty();
    00237       SetWindowDirty(WC_VEHICLE_VIEW, v->index);
    00238     }
    00239   }
    00240 }
    00241
    00242 void Ship::MarkDirty()
    00243 {
    00244   this->UpdateViewport(false, false);
    00245 }
    00246
    00247 static void PlayShipSound(const Vehicle *v)
    00248 {
    00249   if (!PlayVehicleSound(v, VSE_START)) {
    00250     SndPlayVehicleFx(ShipVehInfo(v->engine_type)->sfx, v);
    00251   }
    00252 }
    00253
    00254 void Ship::PlayLeaveStationSound() const
    00255 {
    00256   PlayShipSound(this);
    00257 }
    00258
    00259 TileIndex Ship::GetOrderStationLocation(StationID station)
    00260 {
    00261   if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
    00262
    00263   const Station *st = Station::Get(station);
    00264   if (st->dock_tile != INVALID_TILE) {
    00265     return TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
    00266   } else {
    00267     this->IncrementOrderIndex();
    00268     return 0;
    00269   }
    00270 }
    00271
    00272 void Ship::UpdateDeltaXY(Direction direction)
    00273 {
    00274 #define MKIT(a, b, c, d) ((a & 0xFF) << 24) | ((b & 0xFF) << 16) | ((c & 0xFF) << 8) | ((d & 0xFF) << 0)
    00275   static const uint32 _delta_xy_table[8] = {
    00276     MKIT( 6,  6,  -3,  -3),
    00277     MKIT( 6, 32,  -3, -16),
    00278     MKIT( 6,  6,  -3,  -3),
    00279     MKIT(32,  6, -16,  -3),
    00280     MKIT( 6,  6,  -3,  -3),
    00281     MKIT( 6, 32,  -3, -16),
    00282     MKIT( 6,  6,  -3,  -3),
    00283     MKIT(32,  6, -16,  -3),
    00284   };
    00285 #undef MKIT
    00286
    00287   uint32 x = _delta_xy_table[direction];
    00288   this->x_offs        = GB(x,  0, 8);
    00289   this->y_offs        = GB(x,  8, 8);
    00290   this->x_extent      = GB(x, 16, 8);
    00291   this->y_extent      = GB(x, 24, 8);
    00292   this->z_extent      = 6;
    00293 }
    00294
    00295 void RecalcShipStuff(Vehicle *v)
    00296 {
    00297   v->UpdateViewport(false, true);
    00298   SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
    00299 }
    00300
    00301 static const TileIndexDiffC _ship_leave_depot_offs[] = {
    00302   {-1,  0},
    00303   { 0, -1}
    00304 };
    00305
    00306 static void CheckShipLeaveDepot(Ship *v)
    00307 {
    00308   if (!v->IsInDepot()) return;
    00309
    00310   TileIndex tile = v->tile;
    00311   Axis axis = GetShipDepotAxis(tile);
    00312
    00313   /* Check first (north) side */
    00314   if (DiagdirReachesTracks((DiagDirection)axis) & GetTileShipTrackStatus(TILE_ADD(tile, ToTileIndexDiff(_ship_leave_depot_offs[axis])))) {
    00315     v->direction = ReverseDir(AxisToDirection(axis));
    00316   /* Check second (south) side */
    00317   } else if (DiagdirReachesTracks((DiagDirection)(axis + 2)) & GetTileShipTrackStatus(TILE_ADD(tile, -2 * ToTileIndexDiff(_ship_leave_depot_offs[axis])))) {
    00318     v->direction = AxisToDirection(axis);
    00319   } else {
    00320     return;
    00321   }
    00322
    00323   v->state = AxisToTrackBits(axis);
    00324   v->vehstatus &= ~VS_HIDDEN;
    00325
    00326   v->cur_speed = 0;
    00327   RecalcShipStuff(v);
    00328
    00329   PlayShipSound(v);
    00330   VehicleServiceInDepot(v);
    00331   InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
    00332   SetWindowClassesDirty(WC_SHIPS_LIST);
    00333 }
    00334
    00335 static bool ShipAccelerate(Vehicle *v)
    00336 {
    00337   uint spd;
    00338   byte t;
    00339
    00340   spd = min(v->cur_speed + 1, GetVehicleProperty(v, PROP_SHIP_SPEED, v->max_speed));
    00341
    00342   /* updates statusbar only if speed have changed to save CPU time */
    00343   if (spd != v->cur_speed) {
    00344     v->cur_speed = spd;
    00345     if (_settings_client.gui.vehicle_speed)
    00346       SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
    00347   }
    00348
    00349   /* Decrease somewhat when turning */
    00350   if (!(v->direction & 1)) spd = spd * 3 / 4;
    00351
    00352   if (spd == 0) return false;
    00353   if ((byte)++spd == 0) return true;
    00354
    00355   v->progress = (t = v->progress) - (byte)spd;
    00356
    00357   return (t < v->progress);
    00358 }
    00359
    00360 static void ShipArrivesAt(const Vehicle *v, Station *st)
    00361 {
    00362   /* Check if station was ever visited before */
    00363   if (!(st->had_vehicle_of_type & HVOT_SHIP)) {
    00364     st->had_vehicle_of_type |= HVOT_SHIP;
    00365
    00366     SetDParam(0, st->index);
    00367     AddVehicleNewsItem(
    00368       STR_NEWS_FIRST_SHIP_ARRIVAL,
    00369       (v->owner == _local_company) ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
    00370       v->index,
    00371       st->index
    00372     );
    00373     AI::NewEvent(v->owner, new AIEventStationFirstVehicle(st->index, v->index));
    00374   }
    00375 }
    00376
    00377
    00381 static Track ChooseShipTrack(const Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks)
    00382 {
    00383   assert(IsValidDiagDirection(enterdir));
    00384
    00385   switch (_settings_game.pf.pathfinder_for_ships) {
    00386     case VPF_OPF: return OPFShipChooseTrack(v, tile, enterdir, tracks);
    00387     case VPF_NPF: return NPFShipChooseTrack(v, tile, enterdir, tracks);
    00388     case VPF_YAPF: return YapfShipChooseTrack(v, tile, enterdir, tracks);
    00389     default: NOT_REACHED();
    00390   }
    00391 }
    00392
    00393 static const Direction _new_vehicle_direction_table[] = {
    00394   DIR_N , DIR_NW, DIR_W , INVALID_DIR,
    00395   DIR_NE, DIR_N , DIR_SW, INVALID_DIR,
    00396   DIR_E , DIR_SE, DIR_S
    00397 };
    00398
    00399 static Direction ShipGetNewDirectionFromTiles(TileIndex new_tile, TileIndex old_tile)
    00400 {
    00401   uint offs = (TileY(new_tile) - TileY(old_tile) + 1) * 4 +
    00402               TileX(new_tile) - TileX(old_tile) + 1;
    00403   assert(offs < 11 && offs != 3 && offs != 7);
    00404   return _new_vehicle_direction_table[offs];
    00405 }
    00406
    00407 static Direction ShipGetNewDirection(Vehicle *v, int x, int y)
    00408 {
    00409   uint offs = (y - v->y_pos + 1) * 4 + (x - v->x_pos + 1);
    00410   assert(offs < 11 && offs != 3 && offs != 7);
    00411   return _new_vehicle_direction_table[offs];
    00412 }
    00413
    00414 static inline TrackBits GetAvailShipTracks(TileIndex tile, DiagDirection dir)
    00415 {
    00416   return GetTileShipTrackStatus(tile) & DiagdirReachesTracks(dir);
    00417 }
    00418
    00419 static const byte _ship_subcoord[4][6][3] = {
    00420   {
    00421     {15, 8, 1},
    00422     { 0, 0, 0},
    00423     { 0, 0, 0},
    00424     {15, 8, 2},
    00425     {15, 7, 0},
    00426     { 0, 0, 0},
    00427   },
    00428   {
    00429     { 0, 0, 0},
    00430     { 8, 0, 3},
    00431     { 7, 0, 2},
    00432     { 0, 0, 0},
    00433     { 8, 0, 4},
    00434     { 0, 0, 0},
    00435   },
    00436   {
    00437     { 0, 8, 5},
    00438     { 0, 0, 0},
    00439     { 0, 7, 6},
    00440     { 0, 0, 0},
    00441     { 0, 0, 0},
    00442     { 0, 8, 4},
    00443   },
    00444   {
    00445     { 0, 0, 0},
    00446     { 8, 15, 7},
    00447     { 0, 0, 0},
    00448     { 8, 15, 6},
    00449     { 0, 0, 0},
    00450     { 7, 15, 0},
    00451   }
    00452 };
    00453
    00454 static void ShipController(Ship *v)
    00455 {
    00456   uint32 r;
    00457   const byte *b;
    00458   Direction dir;
    00459   Track track;
    00460   TrackBits tracks;
    00461
    00462   v->tick_counter++;
    00463   v->current_order_time++;
    00464
    00465   if (v->breakdown_ctr != 0) {
    00466     if (v->breakdown_ctr <= 2) {
    00467       HandleBrokenShip(v);
    00468       return;
    00469     }
    00470     if (!v->current_order.IsType(OT_LOADING)) v->breakdown_ctr--;
    00471   }
    00472
    00473   if (v->vehstatus & VS_STOPPED) return;
    00474
    00475   ProcessOrders(v);
    00476   v->HandleLoading();
    00477
    00478   if (v->current_order.IsType(OT_LOADING)) return;
    00479
    00480   CheckShipLeaveDepot(v);
    00481
    00482   if (!ShipAccelerate(v)) return;
    00483
    00484   GetNewVehiclePosResult gp = GetNewVehiclePos(v);
    00485   if (v->state != TRACK_BIT_WORMHOLE) {
    00486     /* Not on a bridge */
    00487     if (gp.old_tile == gp.new_tile) {
    00488       /* Staying in tile */
    00489       if (v->IsInDepot()) {
    00490         gp.x = v->x_pos;
    00491         gp.y = v->y_pos;
    00492       } else {
    00493         /* Not inside depot */
    00494         r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
    00495         if (HasBit(r, VETS_CANNOT_ENTER)) goto reverse_direction;
    00496
    00497         /* A leave station order only needs one tick to get processed, so we can
    00498          * always skip ahead. */
    00499         if (v->current_order.IsType(OT_LEAVESTATION)) {
    00500           v->current_order.Free();
    00501           SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
    00502         } else if (v->dest_tile != 0) {
    00503           /* We have a target, let's see if we reached it... */
    00504           if (v->current_order.IsType(OT_GOTO_WAYPOINT) &&
    00505               DistanceManhattan(v->dest_tile, gp.new_tile) <= 3) {
    00506             /* We got within 3 tiles of our target buoy, so let's skip to our
    00507              * next order */
    00508             UpdateVehicleTimetable(v, true);
    00509             v->IncrementOrderIndex();
    00510             v->current_order.MakeDummy();
    00511           } else {
    00512             /* Non-buoy orders really need to reach the tile */
    00513             if (v->dest_tile == gp.new_tile) {
    00514               if (v->current_order.IsType(OT_GOTO_DEPOT)) {
    00515                 if ((gp.x & 0xF) == 8 && (gp.y & 0xF) == 8) {
    00516                   VehicleEnterDepot(v);
    00517                   return;
    00518                 }
    00519               } else if (v->current_order.IsType(OT_GOTO_STATION)) {
    00520                 v->last_station_visited = v->current_order.GetDestination();
    00521
    00522                 /* Process station in the orderlist. */
    00523                 Station *st = Station::Get(v->current_order.GetDestination());
    00524                 if (st->facilities & FACIL_DOCK) { // ugly, ugly workaround for problem with ships able to drop off cargo at wrong stations
    00525                   ShipArrivesAt(v, st);
    00526                   v->BeginLoading();
    00527                 } else { // leave stations without docks right aways
    00528                   v->current_order.MakeLeaveStation();
    00529                   v->IncrementOrderIndex();
    00530                 }
    00531               }
    00532             }
    00533           }
    00534         }
    00535       }
    00536     } else {
    00537       DiagDirection diagdir;
    00538       /* New tile */
    00539       if (TileX(gp.new_tile) >= MapMaxX() || TileY(gp.new_tile) >= MapMaxY()) {
    00540         goto reverse_direction;
    00541       }
    00542
    00543       dir = ShipGetNewDirectionFromTiles(gp.new_tile, gp.old_tile);
    00544       assert(dir == DIR_NE || dir == DIR_SE || dir == DIR_SW || dir == DIR_NW);
    00545       diagdir = DirToDiagDir(dir);
    00546       tracks = GetAvailShipTracks(gp.new_tile, diagdir);
    00547       if (tracks == TRACK_BIT_NONE) goto reverse_direction;
    00548
    00549       /* Choose a direction, and continue if we find one */
    00550       track = ChooseShipTrack(v, gp.new_tile, diagdir, tracks);
    00551       if (track == INVALID_TRACK) goto reverse_direction;
    00552
    00553       b = _ship_subcoord[diagdir][track];
    00554
    00555       gp.x = (gp.x & ~0xF) | b[0];
    00556       gp.y = (gp.y & ~0xF) | b[1];
    00557
    00558       /* Call the landscape function and tell it that the vehicle entered the tile */
    00559       r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
    00560       if (HasBit(r, VETS_CANNOT_ENTER)) goto reverse_direction;
    00561
    00562       if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
    00563         v->tile = gp.new_tile;
    00564         v->state = TrackToTrackBits(track);
    00565       }
    00566
    00567       v->direction = (Direction)b[2];
    00568     }
    00569   } else {
    00570     /* On a bridge */
    00571     if (!IsTileType(gp.new_tile, MP_TUNNELBRIDGE) || !HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
    00572       v->x_pos = gp.x;
    00573       v->y_pos = gp.y;
    00574       VehicleMove(v, !(v->vehstatus & VS_HIDDEN));
    00575       return;
    00576     }
    00577   }
    00578
    00579   /* update image of ship, as well as delta XY */
    00580   dir = ShipGetNewDirection(v, gp.x, gp.y);
    00581   v->x_pos = gp.x;
    00582   v->y_pos = gp.y;
    00583   v->z_pos = GetSlopeZ(gp.x, gp.y);
    00584
    00585 getout:
    00586   v->UpdateViewport(true, true);
    00587   return;
    00588
    00589 reverse_direction:
    00590   dir = ReverseDir(v->direction);
    00591   v->direction = dir;
    00592   goto getout;
    00593 }
    00594
    00595 bool Ship::Tick()
    00596 {
    00597   if (!(this->vehstatus & VS_STOPPED)) this->running_ticks++;
    00598
    00599   ShipController(this);
    00600
    00601   return true;
    00602 }
    00603
    00612 CommandCost CmdBuildShip(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00613 {
    00614   UnitID unit_num;
    00615
    00616   if (!IsEngineBuildable(p1, VEH_SHIP, _current_company)) return_cmd_error(STR_ERROR_SHIP_NOT_AVAILABLE);
    00617
    00618   const Engine *e = Engine::Get(p1);
    00619   CommandCost value(EXPENSES_NEW_VEHICLES, e->GetCost());
    00620
    00621   /* Engines without valid cargo should not be available */
    00622   if (e->GetDefaultCargoType() == CT_INVALID) return CMD_ERROR;
    00623
    00624   if (flags & DC_QUERY_COST) return value;
    00625
    00626   /* The ai_new queries the vehicle cost before building the route,
    00627    * so we must check against cheaters no sooner than now. --pasky */
    00628   if (!IsShipDepotTile(tile)) return CMD_ERROR;
    00629   if (!IsTileOwner(tile, _current_company)) return CMD_ERROR;
    00630
    00631   unit_num = (flags & DC_AUTOREPLACE) ? 0 : GetFreeUnitNumber(VEH_SHIP);
    00632
    00633   if (!Vehicle::CanAllocateItem() || unit_num > _settings_game.vehicle.max_ships)
    00634     return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
    00635
    00636   if (flags & DC_EXEC) {
    00637     int x;
    00638     int y;
    00639
    00640     const ShipVehicleInfo *svi = &e->u.ship;
    00641
    00642     Ship *v = new Ship();
    00643     v->unitnumber = unit_num;
    00644
    00645     v->owner = _current_company;
    00646     v->tile = tile;
    00647     x = TileX(tile) * TILE_SIZE + TILE_SIZE / 2;
    00648     y = TileY(tile) * TILE_SIZE + TILE_SIZE / 2;
    00649     v->x_pos = x;
    00650     v->y_pos = y;
    00651     v->z_pos = GetSlopeZ(x, y);
    00652
    00653     v->UpdateDeltaXY(v->direction);
    00654     v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
    00655
    00656     v->spritenum = svi->image_index;
    00657     v->cargo_type = e->GetDefaultCargoType();
    00658     v->cargo_cap = svi->capacity;
    00659     v->value = value.GetCost();
    00660
    00661     v->last_station_visited = INVALID_STATION;
    00662     v->max_speed = svi->max_speed;
    00663     v->engine_type = p1;
    00664
    00665     v->reliability = e->reliability;
    00666     v->reliability_spd_dec = e->reliability_spd_dec;
    00667     v->max_age = e->GetLifeLengthInDays();
    00668     _new_vehicle_id = v->index;
    00669
    00670     v->state = TRACK_BIT_DEPOT;
    00671
    00672     v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_ships;
    00673     v->date_of_last_service = _date;
    00674     v->build_year = _cur_year;
    00675     v->cur_image = SPR_IMG_QUERY;
    00676     v->random_bits = VehicleRandomBits();
    00677
    00678     if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
    00679
    00680     v->InvalidateNewGRFCacheOfChain();
    00681
    00682     v->cargo_cap = GetVehicleCapacity(v);
    00683
    00684     v->InvalidateNewGRFCacheOfChain();
    00685
    00686     VehicleMove(v, false);
    00687
    00688     InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
    00689     InvalidateWindowClassesData(WC_SHIPS_LIST, 0);
    00690     SetWindowDirty(WC_COMPANY, v->owner);
    00691     if (IsLocalCompany()) {
    00692       InvalidateAutoreplaceWindow(v->engine_type, v->group_id); // updates the replace Ship window
    00693     }
    00694
    00695     Company::Get(_current_company)->num_engines[p1]++;
    00696   }
    00697
    00698   return value;
    00699 }
    00700
    00709 CommandCost CmdSellShip(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00710 {
    00711   Ship *v = Ship::GetIfValid(p1);
    00712   if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
    00713
    00714   if (v->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_CAN_T_SELL_DESTROYED_VEHICLE);
    00715
    00716   if (!v->IsStoppedInDepot()) {
    00717     return_cmd_error(STR_ERROR_SHIP_MUST_BE_STOPPED_IN_DEPOT);
    00718   }
    00719
    00720   CommandCost ret(EXPENSES_NEW_VEHICLES, -v->value);
    00721
    00722   if (flags & DC_EXEC) {
    00723     delete v;
    00724   }
    00725
    00726   return ret;
    00727 }
    00728
    00729 bool Ship::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
    00730 {
    00731   const Depot *depot = FindClosestShipDepot(this, 0);
    00732
    00733   if (depot == NULL) return false;
    00734
    00735   if (location    != NULL) *location    = depot->xy;
    00736   if (destination != NULL) *destination = depot->index;
    00737
    00738   return true;
    00739 }
    00740
    00751 CommandCost CmdSendShipToDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00752 {
    00753   if (p2 & DEPOT_MASS_SEND) {
    00754     /* Mass goto depot requested */
    00755     if (!ValidVLWFlags(p2 & VLW_MASK)) return CMD_ERROR;
    00756     return SendAllVehiclesToDepot(VEH_SHIP, flags, p2 & DEPOT_SERVICE, _current_company, (p2 & VLW_MASK), p1);
    00757   }
    00758
    00759   Ship *v = Ship::GetIfValid(p1);
    00760   if (v == NULL) return CMD_ERROR;
    00761
    00762   return v->SendToDepot(flags, (DepotCommand)(p2 & DEPOT_COMMAND_MASK));
    00763 }
    00764
    00765
    00777 CommandCost CmdRefitShip(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00778 {
    00779   CargoID new_cid = GB(p2, 0, 8); // gets the cargo number
    00780   byte new_subtype = GB(p2, 8, 8);
    00781
    00782   Ship *v = Ship::GetIfValid(p1);
    00783
    00784   if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
    00785   if (!v->IsStoppedInDepot()) return_cmd_error(STR_ERROR_SHIP_MUST_BE_STOPPED_IN_DEPOT);
    00786   if (v->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_CAN_T_REFIT_DESTROYED_VEHICLE);
    00787
    00788   /* Check cargo */
    00789   if (new_cid >= NUM_CARGO) return CMD_ERROR;
    00790
    00791   CommandCost cost = RefitVehicle(v, true, new_cid, new_subtype, flags);
    00792
    00793   if (flags & DC_EXEC) {
    00794     v->colourmap = PAL_NONE; // invalidate vehicle colour map
    00795     SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
    00796     SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
    00797     InvalidateWindowClassesData(WC_SHIPS_LIST, 0);
    00798   }
    00799   v->InvalidateNewGRFCacheOfChain(); // always invalidate; querycost might have filled it
    00800
    00801   return cost;
    00802
    00803 }