ai_vehicle.cpp

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00001 /* $Id: ai_vehicle.cpp 15492 2009-02-14 21:22:42Z yexo $ */
00002 
00005 #include "ai_engine.hpp"
00006 #include "ai_cargo.hpp"
00007 #include "ai_gamesettings.hpp"
00008 #include "ai_group.hpp"
00009 #include "../ai_instance.hpp"
00010 #include "../../company_func.h"
00011 #include "../../aircraft.h"
00012 #include "../../string_func.h"
00013 #include "../../strings_func.h"
00014 #include "../../command_func.h"
00015 #include "../../roadveh.h"
00016 #include "../../train.h"
00017 #include "../../vehicle_func.h"
00018 #include "table/strings.h"
00019 
00020 /* static */ bool AIVehicle::IsValidVehicle(VehicleID vehicle_id)
00021 {
00022   if (!::IsValidVehicleID(vehicle_id)) return false;
00023   const Vehicle *v = ::GetVehicle(vehicle_id);
00024   return v->owner == _current_company && (v->IsPrimaryVehicle() || (v->type == VEH_TRAIN && ::IsFreeWagon(v)));
00025 }
00026 
00027 /* static */ int32 AIVehicle::GetNumWagons(VehicleID vehicle_id)
00028 {
00029   if (!IsValidVehicle(vehicle_id)) return -1;
00030 
00031   int num = 1;
00032   if (::GetVehicle(vehicle_id)->type == VEH_TRAIN) {
00033     const Vehicle *v = ::GetVehicle(vehicle_id);
00034     while ((v = GetNextUnit(v)) != NULL) num++;
00035   }
00036 
00037   return num;
00038 }
00039 
00040 /* static */ int AIVehicle::GetLength(VehicleID vehicle_id)
00041 {
00042   if (!IsValidVehicle(vehicle_id)) return -1;
00043 
00044   const Vehicle *v = ::GetVehicle(vehicle_id);
00045   switch (v->type) {
00046     case VEH_ROAD: {
00047       uint total_length = 0;
00048       for (const Vehicle *u = v; u != NULL; u = u->Next()) {
00049         total_length += u->u.road.cached_veh_length;
00050       }
00051       return total_length;
00052     }
00053     case VEH_TRAIN: return v->u.rail.cached_total_length;
00054     default: return -1;
00055   }
00056 }
00057 
00058 /* static */ VehicleID AIVehicle::BuildVehicle(TileIndex depot, EngineID engine_id)
00059 {
00060   EnforcePrecondition(INVALID_VEHICLE, AIEngine::IsValidEngine(engine_id));
00061 
00062 	::VehicleType type = ::GetEngine(engine_id)->type;
00063 
00064   EnforcePreconditionCustomError(INVALID_VEHICLE, !AIGameSettings::IsDisabledVehicleType((AIVehicle::VehicleType)type), AIVehicle::ERR_VEHICLE_BUILD_DISABLED);
00065 
00066   if (!AIObject::DoCommand(depot, engine_id, 0, ::GetCmdBuildVeh(type), NULL, &AIInstance::DoCommandReturnVehicleID)) return INVALID_VEHICLE;
00067 
00068   /* In case of test-mode, we return VehicleID 0 */
00069   return 0;
00070 }
00071 
00072 /* static */ VehicleID AIVehicle::CloneVehicle(TileIndex depot, VehicleID vehicle_id, bool share_orders)
00073 {
00074   EnforcePrecondition(false, IsValidVehicle(vehicle_id));
00075 
00076   if (!AIObject::DoCommand(depot, vehicle_id, share_orders, CMD_CLONE_VEHICLE, NULL, &AIInstance::DoCommandReturnVehicleID)) return INVALID_VEHICLE;
00077 
00078   /* In case of test-mode, we return VehicleID 0 */
00079   return 0;
00080 }
00081 
00082 /* static */ bool AIVehicle::_MoveWagonInternal(VehicleID source_vehicle_id, int source_wagon, bool move_attached_wagons, int dest_vehicle_id, int dest_wagon)
00083 {
00084   EnforcePrecondition(false, IsValidVehicle(source_vehicle_id) && source_wagon < GetNumWagons(source_vehicle_id));
00085   EnforcePrecondition(false, dest_vehicle_id == -1 || (IsValidVehicle(dest_vehicle_id) && dest_wagon < GetNumWagons(dest_vehicle_id)));
00086   EnforcePrecondition(false, ::GetVehicle(source_vehicle_id)->type == VEH_TRAIN);
00087   EnforcePrecondition(false, dest_vehicle_id == -1 || ::GetVehicle(dest_vehicle_id)->type == VEH_TRAIN);
00088 
00089   const Vehicle *v = ::GetVehicle(source_vehicle_id);
00090   while (source_wagon-- > 0) v = GetNextUnit(v);
00091   const Vehicle *w = NULL;
00092   if (dest_vehicle_id != -1) {
00093     w = ::GetVehicle(dest_vehicle_id);
00094     while (dest_wagon-- > 0) w = GetNextUnit(w);
00095   }
00096 
00097   return AIObject::DoCommand(0, v->index | ((w == NULL ? INVALID_VEHICLE : w->index) << 16), move_attached_wagons ? 1 : 0, CMD_MOVE_RAIL_VEHICLE);
00098 }
00099 
00100 /* static */ bool AIVehicle::MoveWagon(VehicleID source_vehicle_id, int source_wagon, int dest_vehicle_id, int dest_wagon)
00101 {
00102   return _MoveWagonInternal(source_vehicle_id, source_wagon, false, dest_vehicle_id, dest_wagon);
00103 }
00104 
00105 /* static */ bool AIVehicle::MoveWagonChain(VehicleID source_vehicle_id, int source_wagon, int dest_vehicle_id, int dest_wagon)
00106 {
00107   return _MoveWagonInternal(source_vehicle_id, source_wagon, true, dest_vehicle_id, dest_wagon);
00108 }
00109 
00110 /* static */ int AIVehicle::GetRefitCapacity(VehicleID vehicle_id, CargoID cargo)
00111 {
00112   if (!IsValidVehicle(vehicle_id)) return -1;
00113   if (!AICargo::IsValidCargo(cargo)) return -1;
00114 
00115   CommandCost res = ::DoCommand(0, vehicle_id, cargo, DC_QUERY_COST, GetCmdRefitVeh(::GetVehicle(vehicle_id)));
00116   return CmdSucceeded(res) ? _returned_refit_capacity : -1;
00117 }
00118 
00119 /* static */ bool AIVehicle::RefitVehicle(VehicleID vehicle_id, CargoID cargo)
00120 {
00121   EnforcePrecondition(false, IsValidVehicle(vehicle_id) && AICargo::IsValidCargo(cargo));
00122 
00123   return AIObject::DoCommand(0, vehicle_id, cargo, GetCmdRefitVeh(::GetVehicle(vehicle_id)));
00124 }
00125 
00126 
00127 /* static */ bool AIVehicle::SellVehicle(VehicleID vehicle_id)
00128 {
00129   EnforcePrecondition(false, IsValidVehicle(vehicle_id));
00130 
00131   const Vehicle *v = ::GetVehicle(vehicle_id);
00132   return AIObject::DoCommand(0, vehicle_id, v->type == VEH_TRAIN ? 1 : 0, GetCmdSellVeh(v));
00133 }
00134 
00135 /* static */ bool AIVehicle::_SellWagonInternal(VehicleID vehicle_id, int wagon, bool sell_attached_wagons)
00136 {
00137   EnforcePrecondition(false, IsValidVehicle(vehicle_id) && wagon < GetNumWagons(vehicle_id));
00138   EnforcePrecondition(false, ::GetVehicle(vehicle_id)->type == VEH_TRAIN);
00139 
00140   const Vehicle *v = ::GetVehicle(vehicle_id);
00141   while (wagon-- > 0) v = GetNextUnit(v);
00142 
00143   return AIObject::DoCommand(0, v->index, sell_attached_wagons ? 1 : 0, CMD_SELL_RAIL_WAGON);
00144 }
00145 
00146 /* static */ bool AIVehicle::SellWagon(VehicleID vehicle_id, int wagon)
00147 {
00148   return _SellWagonInternal(vehicle_id, wagon, false);
00149 }
00150 
00151 /* static */ bool AIVehicle::SellWagonChain(VehicleID vehicle_id, int wagon)
00152 {
00153   return _SellWagonInternal(vehicle_id, wagon, true);
00154 }
00155 
00156 /* static */ bool AIVehicle::SendVehicleToDepot(VehicleID vehicle_id)
00157 {
00158   EnforcePrecondition(false, IsValidVehicle(vehicle_id));
00159 
00160   return AIObject::DoCommand(0, vehicle_id, 0, GetCmdSendToDepot(::GetVehicle(vehicle_id)));
00161 }
00162 
00163 /* static */ bool AIVehicle::IsInDepot(VehicleID vehicle_id)
00164 {
00165   if (!IsValidVehicle(vehicle_id)) return false;
00166   return ::GetVehicle(vehicle_id)->IsInDepot();
00167 }
00168 
00169 /* static */ bool AIVehicle::IsStoppedInDepot(VehicleID vehicle_id)
00170 {
00171   if (!IsValidVehicle(vehicle_id)) return false;
00172   return ::GetVehicle(vehicle_id)->IsStoppedInDepot();
00173 }
00174 
00175 /* static */ bool AIVehicle::StartStopVehicle(VehicleID vehicle_id)
00176 {
00177   EnforcePrecondition(false, IsValidVehicle(vehicle_id));
00178 
00179   return AIObject::DoCommand(0, vehicle_id, 0, CMD_START_STOP_VEHICLE);
00180 }
00181 
00182 /* static */ bool AIVehicle::SkipToVehicleOrder(VehicleID vehicle_id, AIOrder::OrderPosition order_position)
00183 {
00184   order_position = AIOrder::ResolveOrderPosition(vehicle_id, order_position);
00185 
00186   EnforcePrecondition(false, AIOrder::IsValidVehicleOrder(vehicle_id, order_position));
00187 
00188   return AIObject::DoCommand(0, vehicle_id, order_position, CMD_SKIP_TO_ORDER);
00189 }
00190 
00191 /* static */ bool AIVehicle::ReverseVehicle(VehicleID vehicle_id)
00192 {
00193   EnforcePrecondition(false, IsValidVehicle(vehicle_id));
00194   EnforcePrecondition(false, ::GetVehicle(vehicle_id)->type == VEH_ROAD || ::GetVehicle(vehicle_id)->type == VEH_TRAIN);
00195 
00196   switch (::GetVehicle(vehicle_id)->type) {
00197     case VEH_ROAD: return AIObject::DoCommand(0, vehicle_id, 0, CMD_TURN_ROADVEH);
00198     case VEH_TRAIN: return AIObject::DoCommand(0, vehicle_id, 0, CMD_REVERSE_TRAIN_DIRECTION);
00199     default: NOT_REACHED();
00200   }
00201 }
00202 
00203 /* static */ bool AIVehicle::SetName(VehicleID vehicle_id, const char *name)
00204 {
00205   EnforcePrecondition(false, IsValidVehicle(vehicle_id));
00206   EnforcePrecondition(false, !::StrEmpty(name));
00207   EnforcePreconditionCustomError(false, ::strlen(name) < MAX_LENGTH_VEHICLE_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG);
00208 
00209   return AIObject::DoCommand(0, vehicle_id, 0, CMD_RENAME_VEHICLE, name);
00210 }
00211 
00212 /* static */ TileIndex AIVehicle::GetLocation(VehicleID vehicle_id)
00213 {
00214   if (!IsValidVehicle(vehicle_id)) return INVALID_TILE;
00215 
00216   const Vehicle *v = ::GetVehicle(vehicle_id);
00217   if (v->type == VEH_AIRCRAFT) {
00218     uint x = Clamp(v->x_pos / TILE_SIZE, 0, ::MapSizeX() - 2);
00219     uint y = Clamp(v->y_pos / TILE_SIZE, 0, ::MapSizeY() - 2);
00220     return ::TileXY(x, y);
00221   }
00222 
00223   return v->tile;
00224 }
00225 
00226 /* static */ EngineID AIVehicle::GetEngineType(VehicleID vehicle_id)
00227 {
00228   if (!IsValidVehicle(vehicle_id)) return INVALID_ENGINE;
00229 
00230   return ::GetVehicle(vehicle_id)->engine_type;
00231 }
00232 
00233 /* static */ EngineID AIVehicle::GetWagonEngineType(VehicleID vehicle_id, int wagon)
00234 {
00235   if (!IsValidVehicle(vehicle_id)) return INVALID_ENGINE;
00236   if (wagon >= GetNumWagons(vehicle_id)) return INVALID_ENGINE;
00237 
00238   const Vehicle *v = ::GetVehicle(vehicle_id);
00239   if (v->type == VEH_TRAIN) {
00240     while (wagon-- > 0) v = GetNextUnit(v);
00241   }
00242   return v->engine_type;
00243 }
00244 
00245 /* static */ int32 AIVehicle::GetUnitNumber(VehicleID vehicle_id)
00246 {
00247   if (!IsValidVehicle(vehicle_id)) return -1;
00248 
00249   return ::GetVehicle(vehicle_id)->unitnumber;
00250 }
00251 
00252 /* static */ char *AIVehicle::GetName(VehicleID vehicle_id)
00253 {
00254   if (!IsValidVehicle(vehicle_id)) return NULL;
00255 
00256   static const int len = 64;
00257   char *vehicle_name = MallocT<char>(len);
00258 
00259   ::SetDParam(0, vehicle_id);
00260   ::GetString(vehicle_name, STR_VEHICLE_NAME, &vehicle_name[len - 1]);
00261   return vehicle_name;
00262 }
00263 
00264 /* static */ int32 AIVehicle::GetAge(VehicleID vehicle_id)
00265 {
00266   if (!IsValidVehicle(vehicle_id)) return -1;
00267 
00268   return ::GetVehicle(vehicle_id)->age;
00269 }
00270 
00271 /* static */ int32 AIVehicle::GetWagonAge(VehicleID vehicle_id, int wagon)
00272 {
00273   if (!IsValidVehicle(vehicle_id)) return -1;
00274   if (wagon >= GetNumWagons(vehicle_id)) return -1;
00275 
00276   const Vehicle *v = ::GetVehicle(vehicle_id);
00277   if (v->type == VEH_TRAIN) {
00278     while (wagon-- > 0) v = GetNextUnit(v);
00279   }
00280   return v->age;
00281 }
00282 
00283 /* static */ int32 AIVehicle::GetMaxAge(VehicleID vehicle_id)
00284 {
00285   if (!IsValidVehicle(vehicle_id)) return -1;
00286 
00287   return ::GetVehicle(vehicle_id)->max_age;
00288 }
00289 
00290 /* static */ int32 AIVehicle::GetAgeLeft(VehicleID vehicle_id)
00291 {
00292   if (!IsValidVehicle(vehicle_id)) return -1;
00293 
00294   return ::GetVehicle(vehicle_id)->max_age - ::GetVehicle(vehicle_id)->age;
00295 }
00296 
00297 /* static */ int32 AIVehicle::GetCurrentSpeed(VehicleID vehicle_id)
00298 {
00299   if (!IsValidVehicle(vehicle_id)) return -1;
00300 
00301   return ::GetVehicle(vehicle_id)->GetDisplaySpeed(); // km-ish/h
00302 }
00303 
00304 /* static */ AIVehicle::VehicleState AIVehicle::GetState(VehicleID vehicle_id)
00305 {
00306   if (!IsValidVehicle(vehicle_id)) return AIVehicle::VS_INVALID;
00307 
00308   const Vehicle *v = ::GetVehicle(vehicle_id);
00309   byte vehstatus = v->vehstatus;
00310 
00311   if (vehstatus & ::VS_CRASHED) return AIVehicle::VS_CRASHED;
00312   if (v->breakdown_ctr != 0) return AIVehicle::VS_BROKEN;
00313   if (v->IsStoppedInDepot()) return AIVehicle::VS_IN_DEPOT;
00314   if (vehstatus & ::VS_STOPPED) return AIVehicle::VS_STOPPED;
00315   if (v->current_order.IsType(OT_LOADING)) return AIVehicle::VS_AT_STATION;
00316   return AIVehicle::VS_RUNNING;
00317 }
00318 
00319 /* static */ Money AIVehicle::GetRunningCost(VehicleID vehicle_id)
00320 {
00321   if (!IsValidVehicle(vehicle_id)) return -1;
00322 
00323   return ::GetVehicle(vehicle_id)->GetRunningCost() >> 8;
00324 }
00325 
00326 /* static */ Money AIVehicle::GetProfitThisYear(VehicleID vehicle_id)
00327 {
00328   if (!IsValidVehicle(vehicle_id)) return -1;
00329 
00330   return ::GetVehicle(vehicle_id)->GetDisplayProfitThisYear();
00331 }
00332 
00333 /* static */ Money AIVehicle::GetProfitLastYear(VehicleID vehicle_id)
00334 {
00335   if (!IsValidVehicle(vehicle_id)) return -1;
00336 
00337   return ::GetVehicle(vehicle_id)->GetDisplayProfitLastYear();
00338 }
00339 
00340 /* static */ Money AIVehicle::GetCurrentValue(VehicleID vehicle_id)
00341 {
00342   if (!IsValidVehicle(vehicle_id)) return -1;
00343 
00344   return ::GetVehicle(vehicle_id)->value;
00345 }
00346 
00347 /* static */ AIVehicle::VehicleType AIVehicle::GetVehicleType(VehicleID vehicle_id)
00348 {
00349   if (!IsValidVehicle(vehicle_id)) return VT_INVALID;
00350 
00351   switch (::GetVehicle(vehicle_id)->type) {
00352     case VEH_ROAD:     return VT_ROAD;
00353     case VEH_TRAIN:    return VT_RAIL;
00354     case VEH_SHIP:     return VT_WATER;
00355     case VEH_AIRCRAFT: return VT_AIR;
00356     default:           return VT_INVALID;
00357   }
00358 }
00359 
00360 /* static */ AIRoad::RoadType AIVehicle::GetRoadType(VehicleID vehicle_id)
00361 {
00362   if (!IsValidVehicle(vehicle_id)) return AIRoad::ROADTYPE_INVALID;
00363   if (GetVehicleType(vehicle_id) != VT_ROAD) return AIRoad::ROADTYPE_INVALID;
00364 
00365   return (AIRoad::RoadType)::GetVehicle(vehicle_id)->u.road.roadtype;
00366 }
00367 
00368 /* static */ int32 AIVehicle::GetCapacity(VehicleID vehicle_id, CargoID cargo)
00369 {
00370   if (!IsValidVehicle(vehicle_id)) return -1;
00371   if (!AICargo::IsValidCargo(cargo)) return -1;
00372 
00373   uint32 amount = 0;
00374   for (const Vehicle *v = ::GetVehicle(vehicle_id); v != NULL; v = v->Next()) {
00375     if (v->cargo_type == cargo) amount += v->cargo_cap;
00376   }
00377 
00378   return amount;
00379 }
00380 
00381 /* static */ int32 AIVehicle::GetCargoLoad(VehicleID vehicle_id, CargoID cargo)
00382 {
00383   if (!IsValidVehicle(vehicle_id)) return -1;
00384   if (!AICargo::IsValidCargo(cargo)) return -1;
00385 
00386   uint32 amount = 0;
00387   for (const Vehicle *v = ::GetVehicle(vehicle_id); v != NULL; v = v->Next()) {
00388     if (v->cargo_type == cargo) amount += v->cargo.Count();
00389   }
00390 
00391   return amount;
00392 }
00393 
00394 /* static */ GroupID AIVehicle::GetGroupID(VehicleID vehicle_id)
00395 {
00396   if (!IsValidVehicle(vehicle_id)) return AIGroup::GROUP_INVALID;
00397 
00398   return ::GetVehicle(vehicle_id)->group_id;
00399 }
00400 
00401 /* static */ bool AIVehicle::IsArticulated(VehicleID vehicle_id)
00402 {
00403   if (!IsValidVehicle(vehicle_id)) return false;
00404   if (GetVehicleType(vehicle_id) != VT_ROAD && GetVehicleType(vehicle_id) != VT_RAIL) return false;
00405 
00406   const Vehicle *v = ::GetVehicle(vehicle_id);
00407   switch (v->type) {
00408     case VEH_ROAD: return RoadVehHasArticPart(v);
00409     case VEH_TRAIN: return EngineHasArticPart(v);
00410     default: NOT_REACHED();
00411   }
00412 }
00413 
00414 /* static */ bool AIVehicle::HasSharedOrders(VehicleID vehicle_id)
00415 {
00416   if (!IsValidVehicle(vehicle_id)) return false;
00417 
00418   Vehicle *v = ::GetVehicle(vehicle_id);
00419   return v->orders.list != NULL && v->orders.list->GetNumVehicles() > 1;
00420 }

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