ai_engine.cpp

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00001 /* $Id: ai_engine.cpp 15765 2009-03-18 19:50:34Z rubidium $ */
00002 
00005 #include "ai_engine.hpp"
00006 #include "ai_cargo.hpp"
00007 #include "../../company_func.h"
00008 #include "../../strings_func.h"
00009 #include "../../vehicle_func.h"
00010 #include "../../settings_type.h"
00011 #include "../../rail.h"
00012 #include "../../engine_base.h"
00013 #include "../../articulated_vehicles.h"
00014 #include "table/strings.h"
00015 
00016 /* static */ bool AIEngine::IsValidEngine(EngineID engine_id)
00017 {
00018   return ::IsEngineIndex(engine_id) && HasBit(::GetEngine(engine_id)->company_avail, _current_company);
00019 }
00020 
00021 /* static */ char *AIEngine::GetName(EngineID engine_id)
00022 {
00023   if (!IsValidEngine(engine_id)) return NULL;
00024 
00025   static const int len = 64;
00026   char *engine_name = MallocT<char>(len);
00027 
00028   ::SetDParam(0, engine_id);
00029   ::GetString(engine_name, STR_ENGINE_NAME, &engine_name[len - 1]);
00030   return engine_name;
00031 }
00032 
00033 /* static */ CargoID AIEngine::GetCargoType(EngineID engine_id)
00034 {
00035   if (!IsValidEngine(engine_id)) return CT_INVALID;
00036 
00037   const Engine *e = ::GetEngine(engine_id);
00038   if (!e->CanCarryCargo()) return CT_INVALID;
00039 
00040   return e->GetDefaultCargoType();
00041 }
00042 
00043 /* static */ bool AIEngine::CanRefitCargo(EngineID engine_id, CargoID cargo_id)
00044 {
00045   if (!IsValidEngine(engine_id)) return false;
00046   if (!AICargo::IsValidCargo(cargo_id)) return false;
00047 
00048   if (GetCargoType(engine_id) == cargo_id) return true;
00049   if (cargo_id == CT_MAIL && ::GetEngine(engine_id)->type == VEH_AIRCRAFT) return true;
00050   if (::GetEngine(engine_id)->type == VEH_SHIP && !ShipVehInfo(engine_id)->refittable) return false;
00051   return ::CanRefitTo(engine_id, cargo_id);
00052 }
00053 
00054 /* static */ bool AIEngine::CanPullCargo(EngineID engine_id, CargoID cargo_id)
00055 {
00056   if (!IsValidEngine(engine_id)) return false;
00057   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00058   if (!AICargo::IsValidCargo(cargo_id)) return false;
00059 
00060   return (::RailVehInfo(engine_id)->ai_passenger_only != 1) || AICargo::HasCargoClass(cargo_id, AICargo::CC_PASSENGERS);
00061 }
00062 
00063 
00064 /* static */ int32 AIEngine::GetCapacity(EngineID engine_id)
00065 {
00066   if (!IsValidEngine(engine_id)) return -1;
00067 
00068   const Engine *e = ::GetEngine(engine_id);
00069   switch (e->type) {
00070     case VEH_ROAD:
00071     case VEH_TRAIN: {
00072       uint16 *capacities = GetCapacityOfArticulatedParts(engine_id, e->type);
00073       for (CargoID c = 0; c < NUM_CARGO; c++) {
00074         if (capacities[c] == 0) continue;
00075         return capacities[c];
00076       }
00077       return -1;
00078     } break;
00079 
00080     case VEH_SHIP:
00081     case VEH_AIRCRAFT:
00082       return e->GetDisplayDefaultCapacity();
00083       break;
00084 
00085     default: NOT_REACHED();
00086   }
00087 }
00088 
00089 /* static */ int32 AIEngine::GetReliability(EngineID engine_id)
00090 {
00091   if (!IsValidEngine(engine_id)) return -1;
00092   if (GetVehicleType(engine_id) == AIVehicle::VT_RAIL && IsWagon(engine_id)) return -1;
00093 
00094   return (::GetEngine(engine_id)->reliability * 100 >> 16);
00095 }
00096 
00097 /* static */ int32 AIEngine::GetMaxSpeed(EngineID engine_id)
00098 {
00099   if (!IsValidEngine(engine_id)) return -1;
00100 
00101   const Engine *e = ::GetEngine(engine_id);
00102   int32 max_speed = e->GetDisplayMaxSpeed(); // km-ish/h
00103   if (e->type == VEH_AIRCRAFT) max_speed /= _settings_game.vehicle.plane_speed;
00104   return max_speed;
00105 }
00106 
00107 /* static */ Money AIEngine::GetPrice(EngineID engine_id)
00108 {
00109   if (!IsValidEngine(engine_id)) return -1;
00110 
00111   return ::GetEngine(engine_id)->GetCost();
00112 }
00113 
00114 /* static */ int32 AIEngine::GetMaxAge(EngineID engine_id)
00115 {
00116   if (!IsValidEngine(engine_id)) return -1;
00117   if (GetVehicleType(engine_id) == AIVehicle::VT_RAIL && IsWagon(engine_id)) return -1;
00118 
00119   return ::GetEngine(engine_id)->lifelength * DAYS_IN_LEAP_YEAR;
00120 }
00121 
00122 /* static */ Money AIEngine::GetRunningCost(EngineID engine_id)
00123 {
00124   if (!IsValidEngine(engine_id)) return -1;
00125 
00126   return ::GetEngine(engine_id)->GetRunningCost();
00127 }
00128 
00129 /* static */ int32 AIEngine::GetPower(EngineID engine_id)
00130 {
00131   if (!IsValidEngine(engine_id)) return -1;
00132   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return -1;
00133   if (IsWagon(engine_id)) return -1;
00134 
00135   return ::GetEngine(engine_id)->GetPower();
00136 }
00137 
00138 /* static */ int32 AIEngine::GetWeight(EngineID engine_id)
00139 {
00140   if (!IsValidEngine(engine_id)) return -1;
00141   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return -1;
00142 
00143   return ::GetEngine(engine_id)->GetDisplayWeight();
00144 }
00145 
00146 /* static */ int32 AIEngine::GetMaxTractiveEffort(EngineID engine_id)
00147 {
00148   if (!IsValidEngine(engine_id)) return -1;
00149   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return -1;
00150   if (IsWagon(engine_id)) return -1;
00151 
00152   return ::GetEngine(engine_id)->GetDisplayMaxTractiveEffort();
00153 }
00154 
00155 /* static */ AIVehicle::VehicleType AIEngine::GetVehicleType(EngineID engine_id)
00156 {
00157   if (!IsValidEngine(engine_id)) return AIVehicle::VT_INVALID;
00158 
00159   switch (::GetEngine(engine_id)->type) {
00160     case VEH_ROAD:     return AIVehicle::VT_ROAD;
00161     case VEH_TRAIN:    return AIVehicle::VT_RAIL;
00162     case VEH_SHIP:     return AIVehicle::VT_WATER;
00163     case VEH_AIRCRAFT: return AIVehicle::VT_AIR;
00164     default: NOT_REACHED();
00165   }
00166 }
00167 
00168 /* static */ bool AIEngine::IsWagon(EngineID engine_id)
00169 {
00170   if (!IsValidEngine(engine_id)) return false;
00171   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00172 
00173   return ::RailVehInfo(engine_id)->power == 0;
00174 }
00175 
00176 /* static */ bool AIEngine::CanRunOnRail(EngineID engine_id, AIRail::RailType track_rail_type)
00177 {
00178   if (!IsValidEngine(engine_id)) return false;
00179   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00180   if (!AIRail::IsRailTypeAvailable(track_rail_type)) return false;
00181 
00182   return ::IsCompatibleRail((::RailType)::RailVehInfo(engine_id)->railtype, (::RailType)track_rail_type);
00183 }
00184 
00185 /* static */ bool AIEngine::HasPowerOnRail(EngineID engine_id, AIRail::RailType track_rail_type)
00186 {
00187   if (!IsValidEngine(engine_id)) return false;
00188   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00189   if (!AIRail::IsRailTypeAvailable(track_rail_type)) return false;
00190 
00191   return ::HasPowerOnRail((::RailType)::RailVehInfo(engine_id)->railtype, (::RailType)track_rail_type);
00192 }
00193 
00194 /* static */ AIRoad::RoadType AIEngine::GetRoadType(EngineID engine_id)
00195 {
00196   if (!IsValidEngine(engine_id)) return AIRoad::ROADTYPE_INVALID;
00197   if (GetVehicleType(engine_id) != AIVehicle::VT_ROAD) return AIRoad::ROADTYPE_INVALID;
00198 
00199   return HasBit(::EngInfo(engine_id)->misc_flags, EF_ROAD_TRAM) ? AIRoad::ROADTYPE_TRAM : AIRoad::ROADTYPE_ROAD;
00200 }
00201 
00202 /* static */ AIRail::RailType AIEngine::GetRailType(EngineID engine_id)
00203 {
00204   if (!IsValidEngine(engine_id)) return AIRail::RAILTYPE_INVALID;
00205   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return AIRail::RAILTYPE_INVALID;
00206 
00207   return (AIRail::RailType)(uint)::RailVehInfo(engine_id)->railtype;
00208 }
00209 
00210 /* static */ bool AIEngine::IsArticulated(EngineID engine_id)
00211 {
00212   if (!IsValidEngine(engine_id)) return false;
00213   if (GetVehicleType(engine_id) != AIVehicle::VT_ROAD && GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00214 
00215   return CountArticulatedParts(engine_id, true) != 0;
00216 }
00217 
00218 /* static */ AIAirport::PlaneType AIEngine::GetPlaneType(EngineID engine_id)
00219 {
00220   if (!IsValidEngine(engine_id)) return AIAirport::PT_INVALID;
00221   if (GetVehicleType(engine_id) != AIVehicle::VT_AIR) return AIAirport::PT_INVALID;
00222 
00223   return (AIAirport::PlaneType)::AircraftVehInfo(engine_id)->subtype;
00224 }

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