ship_cmd.cpp

Go to the documentation of this file.
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 }

Generated on Wed Mar 31 22:43:28 2010 for OpenTTD by  doxygen 1.6.1