ai_engine.cpp

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00001 /* $Id: ai_engine.cpp 15705 2009-03-13 23:49:12Z 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   const Engine *e = ::GetEngine(engine_id);
00037   if (!e->CanCarryCargo()) return CT_INVALID;
00038 
00039   return e->GetDefaultCargoType();
00040 }
00041 
00042 /* static */ bool AIEngine::CanRefitCargo(EngineID engine_id, CargoID cargo_id)
00043 {
00044   if (!IsValidEngine(engine_id)) return false;
00045   if (!AICargo::IsValidCargo(cargo_id)) return false;
00046 
00047   if (GetCargoType(engine_id) == cargo_id) return true;
00048   if (cargo_id == CT_MAIL && ::GetEngine(engine_id)->type == VEH_AIRCRAFT) return true;
00049   if (::GetEngine(engine_id)->type == VEH_SHIP && !ShipVehInfo(engine_id)->refittable) return false;
00050   return ::CanRefitTo(engine_id, cargo_id);
00051 }
00052 
00053 /* static */ bool AIEngine::CanPullCargo(EngineID engine_id, CargoID cargo_id)
00054 {
00055   if (!IsValidEngine(engine_id)) return false;
00056   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00057   if (!AICargo::IsValidCargo(cargo_id)) return false;
00058 
00059   return (::RailVehInfo(engine_id)->ai_passenger_only != 1) || AICargo::HasCargoClass(cargo_id, AICargo::CC_PASSENGERS);
00060 }
00061 
00062 
00063 /* static */ int32 AIEngine::GetCapacity(EngineID engine_id)
00064 {
00065   if (!IsValidEngine(engine_id)) return -1;
00066 
00067   const Engine *e = ::GetEngine(engine_id);
00068   switch (e->type) {
00069     case VEH_ROAD:
00070     case VEH_TRAIN: {
00071       uint16 *capacities = GetCapacityOfArticulatedParts(engine_id, e->type);
00072       for (CargoID c = 0; c < NUM_CARGO; c++) {
00073         if (capacities[c] == 0) continue;
00074         return capacities[c];
00075       }
00076       return -1;
00077     } break;
00078 
00079     case VEH_SHIP:
00080       return e->u.ship.capacity;
00081       break;
00082 
00083     case VEH_AIRCRAFT:
00084       return AircraftDefaultCargoCapacity(e->GetDefaultCargoType(), &e->u.air);
00085       break;
00086 
00087     default: NOT_REACHED();
00088   }
00089 }
00090 
00091 /* static */ int32 AIEngine::GetReliability(EngineID engine_id)
00092 {
00093   if (!IsValidEngine(engine_id)) return -1;
00094   if (GetVehicleType(engine_id) == AIVehicle::VT_RAIL && IsWagon(engine_id)) return -1;
00095 
00096   return (::GetEngine(engine_id)->reliability * 100 >> 16);
00097 }
00098 
00099 /* static */ int32 AIEngine::GetMaxSpeed(EngineID engine_id)
00100 {
00101   if (!IsValidEngine(engine_id)) return -1;
00102 
00103   const Engine *e = ::GetEngine(engine_id);
00104   int32 max_speed = e->GetDisplayMaxSpeed(); // km-ish/h
00105   if (e->type == VEH_AIRCRAFT) max_speed /= _settings_game.vehicle.plane_speed;
00106   return max_speed;
00107 }
00108 
00109 /* static */ Money AIEngine::GetPrice(EngineID engine_id)
00110 {
00111   if (!IsValidEngine(engine_id)) return -1;
00112 
00113   return ::GetEngine(engine_id)->GetCost();
00114 }
00115 
00116 /* static */ int32 AIEngine::GetMaxAge(EngineID engine_id)
00117 {
00118   if (!IsValidEngine(engine_id)) return -1;
00119   if (GetVehicleType(engine_id) == AIVehicle::VT_RAIL && IsWagon(engine_id)) return -1;
00120 
00121   return ::GetEngine(engine_id)->lifelength * DAYS_IN_LEAP_YEAR;
00122 }
00123 
00124 /* static */ Money AIEngine::GetRunningCost(EngineID engine_id)
00125 {
00126   if (!IsValidEngine(engine_id)) return -1;
00127 
00128   return ::GetEngine(engine_id)->GetRunningCost();
00129 }
00130 
00131 /* static */ int32 AIEngine::GetPower(EngineID engine_id)
00132 {
00133   if (!IsValidEngine(engine_id)) return -1;
00134   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return -1;
00135   if (IsWagon(engine_id)) return -1;
00136 
00137   return ::GetEngine(engine_id)->GetPower();
00138 }
00139 
00140 /* static */ int32 AIEngine::GetWeight(EngineID engine_id)
00141 {
00142   if (!IsValidEngine(engine_id)) return -1;
00143   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return -1;
00144 
00145   return ::GetEngine(engine_id)->GetDisplayWeight();
00146 }
00147 
00148 /* static */ int32 AIEngine::GetMaxTractiveEffort(EngineID engine_id)
00149 {
00150   if (!IsValidEngine(engine_id)) return -1;
00151   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return -1;
00152   if (IsWagon(engine_id)) return -1;
00153 
00154   return ::GetEngine(engine_id)->GetDisplayMaxTractiveEffort();
00155 }
00156 
00157 /* static */ AIVehicle::VehicleType AIEngine::GetVehicleType(EngineID engine_id)
00158 {
00159   if (!IsValidEngine(engine_id)) return AIVehicle::VT_INVALID;
00160 
00161   switch (::GetEngine(engine_id)->type) {
00162     case VEH_ROAD:     return AIVehicle::VT_ROAD;
00163     case VEH_TRAIN:    return AIVehicle::VT_RAIL;
00164     case VEH_SHIP:     return AIVehicle::VT_WATER;
00165     case VEH_AIRCRAFT: return AIVehicle::VT_AIR;
00166     default: NOT_REACHED();
00167   }
00168 }
00169 
00170 /* static */ bool AIEngine::IsWagon(EngineID engine_id)
00171 {
00172   if (!IsValidEngine(engine_id)) return false;
00173   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00174 
00175   return ::RailVehInfo(engine_id)->power == 0;
00176 }
00177 
00178 /* static */ bool AIEngine::CanRunOnRail(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 ::IsCompatibleRail((::RailType)::RailVehInfo(engine_id)->railtype, (::RailType)track_rail_type);
00185 }
00186 
00187 /* static */ bool AIEngine::HasPowerOnRail(EngineID engine_id, AIRail::RailType track_rail_type)
00188 {
00189   if (!IsValidEngine(engine_id)) return false;
00190   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00191   if (!AIRail::IsRailTypeAvailable(track_rail_type)) return false;
00192 
00193   return ::HasPowerOnRail((::RailType)::RailVehInfo(engine_id)->railtype, (::RailType)track_rail_type);
00194 }
00195 
00196 /* static */ AIRoad::RoadType AIEngine::GetRoadType(EngineID engine_id)
00197 {
00198   if (!IsValidEngine(engine_id)) return AIRoad::ROADTYPE_INVALID;
00199   if (GetVehicleType(engine_id) != AIVehicle::VT_ROAD) return AIRoad::ROADTYPE_INVALID;
00200 
00201   return HasBit(::EngInfo(engine_id)->misc_flags, EF_ROAD_TRAM) ? AIRoad::ROADTYPE_TRAM : AIRoad::ROADTYPE_ROAD;
00202 }
00203 
00204 /* static */ AIRail::RailType AIEngine::GetRailType(EngineID engine_id)
00205 {
00206   if (!IsValidEngine(engine_id)) return AIRail::RAILTYPE_INVALID;
00207   if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return AIRail::RAILTYPE_INVALID;
00208 
00209   return (AIRail::RailType)(uint)::RailVehInfo(engine_id)->railtype;
00210 }
00211 
00212 /* static */ bool AIEngine::IsArticulated(EngineID engine_id)
00213 {
00214   if (!IsValidEngine(engine_id)) return false;
00215   if (GetVehicleType(engine_id) != AIVehicle::VT_ROAD && GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
00216 
00217   return CountArticulatedParts(engine_id, true) != 0;
00218 }
00219 
00220 /* static */ AIAirport::PlaneType AIEngine::GetPlaneType(EngineID engine_id)
00221 {
00222   if (!IsValidEngine(engine_id)) return AIAirport::PT_INVALID;
00223   if (GetVehicleType(engine_id) != AIVehicle::VT_AIR) return AIAirport::PT_INVALID;
00224 
00225   return (AIAirport::PlaneType)::AircraftVehInfo(engine_id)->subtype;
00226 }

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