ai_engine.cpp

Go to the documentation of this file.
00001 /* $Id: ai_engine.cpp 15308 2009-02-01 17:14:39Z frosch $ */
00002 
00005 #include "ai_engine.hpp"
00006 #include "ai_cargo.hpp"
00007 #include "../../company_func.h"
00008 #include "../../strings_func.h"
00009 #include "../../aircraft.h"
00010 #include "../../vehicle_func.h"
00011 #include "../../settings_type.h"
00012 #include "../../articulated_vehicles.h"
00013 #include "table/strings.h"
00014 
00015 /* static */ bool AIEngine::IsValidEngine(EngineID engine_id)
00016 {
00017   return ::IsEngineIndex(engine_id) && HasBit(::GetEngine(engine_id)->company_avail, _current_company);
00018 }
00019 
00020 /* static */ char *AIEngine::GetName(EngineID engine_id)
00021 {
00022   if (!IsValidEngine(engine_id)) return NULL;
00023 
00024   static const int len = 64;
00025   char *engine_name = MallocT<char>(len);
00026 
00027   ::SetDParam(0, engine_id);
00028   ::GetString(engine_name, STR_ENGINE_NAME, &engine_name[len - 1]);
00029   return engine_name;
00030 }
00031 
00032 /* static */ CargoID AIEngine::GetCargoType(EngineID engine_id)
00033 {
00034   if (!IsValidEngine(engine_id)) return CT_INVALID;
00035 
00036   switch (::GetEngine(engine_id)->type) {
00037     case VEH_ROAD: {
00038       const RoadVehicleInfo *vi = ::RoadVehInfo(engine_id);
00039       return vi->cargo_type;
00040     } break;
00041 
00042     case VEH_TRAIN: {
00043       const RailVehicleInfo *vi = ::RailVehInfo(engine_id);
00044       return vi->cargo_type;
00045     } break;
00046 
00047     case VEH_SHIP: {
00048       const ShipVehicleInfo *vi = ::ShipVehInfo(engine_id);
00049       return vi->cargo_type;
00050     } break;
00051 
00052     case VEH_AIRCRAFT: {
00053       return CT_PASSENGERS;
00054     } break;
00055 
00056     default: NOT_REACHED();
00057   }
00058 }
00059 
00060 /* static */ bool AIEngine::CanRefitCargo(EngineID engine_id, CargoID cargo_id)
00061 {
00062   if (!IsValidEngine(engine_id)) return false;
00063   if (!AICargo::IsValidCargo(cargo_id)) return false;
00064 
00065   if (GetCargoType(engine_id) == cargo_id) return true;
00066   if (cargo_id == CT_MAIL && ::GetEngine(engine_id)->type == VEH_AIRCRAFT) return true;
00067   if (::GetEngine(engine_id)->type == VEH_SHIP && !ShipVehInfo(engine_id)->refittable) return false;
00068   return ::CanRefitTo(engine_id, cargo_id);
00069 }
00070 
00071 /* static */ bool AIEngine::CanPullCargo(EngineID engine_id, CargoID cargo_id)
00072 {
00073   if (!IsValidEngine(engine_id)) return false;
00074   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00075   if (!AICargo::IsValidCargo(cargo_id)) return false;
00076 
00077   return (::RailVehInfo(engine_id)->ai_passenger_only != 1) || AICargo::HasCargoClass(cargo_id, AICargo::CC_PASSENGERS);
00078 }
00079 
00080 
00081 /* static */ int32 AIEngine::GetCapacity(EngineID engine_id)
00082 {
00083   if (!IsValidEngine(engine_id)) return -1;
00084 
00085   switch (::GetEngine(engine_id)->type) {
00086     case VEH_ROAD:
00087     case VEH_TRAIN: {
00088       uint16 *capacities = GetCapacityOfArticulatedParts(engine_id, ::GetEngine(engine_id)->type);
00089       for (CargoID c = 0; c < NUM_CARGO; c++) {
00090         if (capacities[c] == 0) continue;
00091         return capacities[c];
00092       }
00093       return -1;
00094     } break;
00095 
00096     case VEH_SHIP: {
00097       const ShipVehicleInfo *vi = ::ShipVehInfo(engine_id);
00098       return vi->capacity;
00099     } break;
00100 
00101     case VEH_AIRCRAFT: {
00102       const AircraftVehicleInfo *vi = ::AircraftVehInfo(engine_id);
00103       return vi->passenger_capacity;
00104     } break;
00105 
00106     default: NOT_REACHED();
00107   }
00108 }
00109 
00110 /* static */ int32 AIEngine::GetReliability(EngineID engine_id)
00111 {
00112   if (!IsValidEngine(engine_id)) return -1;
00113 
00114   return (::GetEngine(engine_id)->reliability * 100 >> 16);
00115 }
00116 
00117 /* static */ int32 AIEngine::GetMaxSpeed(EngineID engine_id)
00118 {
00119   if (!IsValidEngine(engine_id)) return -1;
00120 
00121   const Engine *e = ::GetEngine(engine_id);
00122   int32 max_speed = e->GetDisplayMaxSpeed(); // km-ish/h
00123   if (e->type == VEH_AIRCRAFT) max_speed /= _settings_game.vehicle.plane_speed;
00124   return max_speed;
00125 }
00126 
00127 /* static */ Money AIEngine::GetPrice(EngineID engine_id)
00128 {
00129   if (!IsValidEngine(engine_id)) return -1;
00130 
00131   return ::GetEngine(engine_id)->GetCost();
00132 }
00133 
00134 /* static */ int32 AIEngine::GetMaxAge(EngineID engine_id)
00135 {
00136   if (!IsValidEngine(engine_id)) return -1;
00137 
00138   return ::GetEngine(engine_id)->lifelength * DAYS_IN_LEAP_YEAR;
00139 }
00140 
00141 /* static */ Money AIEngine::GetRunningCost(EngineID engine_id)
00142 {
00143   if (!IsValidEngine(engine_id)) return -1;
00144 
00145   return ::GetEngine(engine_id)->GetRunningCost();
00146 }
00147 
00148 /* static */ AIVehicle::VehicleType AIEngine::GetVehicleType(EngineID engine_id)
00149 {
00150   if (!IsValidEngine(engine_id)) return AIVehicle::VT_INVALID;
00151 
00152   switch (::GetEngine(engine_id)->type) {
00153     case VEH_ROAD:     return AIVehicle::VT_ROAD;
00154     case VEH_TRAIN:    return AIVehicle::VT_RAIL;
00155     case VEH_SHIP:     return AIVehicle::VT_WATER;
00156     case VEH_AIRCRAFT: return AIVehicle::VT_AIR;
00157     default: NOT_REACHED();
00158   }
00159 }
00160 
00161 /* static */ bool AIEngine::IsWagon(EngineID engine_id)
00162 {
00163   if (!IsValidEngine(engine_id)) return false;
00164   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00165 
00166   return ::RailVehInfo(engine_id)->power == 0;
00167 }
00168 
00169 /* static */ bool AIEngine::CanRunOnRail(EngineID engine_id, AIRail::RailType track_rail_type)
00170 {
00171   if (!IsValidEngine(engine_id)) return false;
00172   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00173   if (!AIRail::IsRailTypeAvailable(track_rail_type)) return false;
00174 
00175   return ::IsCompatibleRail((::RailType)::RailVehInfo(engine_id)->railtype, (::RailType)track_rail_type);
00176 }
00177 
00178 /* static */ bool AIEngine::HasPowerOnRail(EngineID engine_id, AIRail::RailType track_rail_type)
00179 {
00180   if (!IsValidEngine(engine_id)) return false;
00181   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00182   if (!AIRail::IsRailTypeAvailable(track_rail_type)) return false;
00183 
00184   return ::HasPowerOnRail((::RailType)::RailVehInfo(engine_id)->railtype, (::RailType)track_rail_type);
00185 }
00186 
00187 /* static */ AIRoad::RoadType AIEngine::GetRoadType(EngineID engine_id)
00188 {
00189   if (!IsValidEngine(engine_id)) return AIRoad::ROADTYPE_INVALID;
00190   if (GetVehicleType(engine_id) != AIVehicle::VT_ROAD) return AIRoad::ROADTYPE_INVALID;
00191 
00192   return HasBit(::EngInfo(engine_id)->misc_flags, EF_ROAD_TRAM) ? AIRoad::ROADTYPE_TRAM : AIRoad::ROADTYPE_ROAD;
00193 }
00194 
00195 /* static */ AIRail::RailType AIEngine::GetRailType(EngineID engine_id)
00196 {
00197   if (!IsValidEngine(engine_id)) return AIRail::RAILTYPE_INVALID;
00198   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return AIRail::RAILTYPE_INVALID;
00199 
00200   return (AIRail::RailType)(uint)::RailVehInfo(engine_id)->railtype;
00201 }
00202 
00203 /* static */ bool AIEngine::IsArticulated(EngineID engine_id)
00204 {
00205   if (!IsValidEngine(engine_id)) return false;
00206   if (GetVehicleType(engine_id) != AIVehicle::VT_ROAD && GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00207 
00208   return CountArticulatedParts(engine_id, true) != 0;
00209 }
00210 
00211 /* static */ AIAirport::PlaneType AIEngine::GetPlaneType(EngineID engine_id)
00212 {
00213   if (!IsValidEngine(engine_id)) return AIAirport::PT_INVALID;
00214   if (GetVehicleType(engine_id) != AIVehicle::VT_AIR) return AIAirport::PT_INVALID;
00215 
00216   return (AIAirport::PlaneType)::AircraftVehInfo(engine_id)->subtype;
00217 }

Generated on Mon Feb 16 23:12:05 2009 for openttd by  doxygen 1.5.6