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/* $Id$ */
/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file ai_engine.cpp Implementation of AIEngine. */
#include "ai_engine.hpp"
#include "ai_cargo.hpp"
#include "../../company_func.h"
#include "../../company_base.h"
#include "../../strings_func.h"
#include "../../rail.h"
#include "../../engine_base.h"
#include "../../articulated_vehicles.h"
#include "table/strings.h"
/* static */ bool AIEngine::IsValidEngine(EngineID engine_id)
{
const Engine *e = ::Engine::GetIfValid(engine_id);
return e != NULL && (HasBit(e->company_avail, _current_company) || ::Company::Get(_current_company)->num_engines[engine_id] > 0);
}
/* static */ bool AIEngine::IsBuildable(EngineID engine_id)
{
const Engine *e = ::Engine::GetIfValid(engine_id);
return e != NULL && HasBit(e->company_avail, _current_company);
}
/* static */ char *AIEngine::GetName(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return NULL;
static const int len = 64;
char *engine_name = MallocT<char>(len);
::SetDParam(0, engine_id);
::GetString(engine_name, STR_ENGINE_NAME, &engine_name[len - 1]);
return engine_name;
}
/* static */ CargoID AIEngine::GetCargoType(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return CT_INVALID;
CargoArray cap = ::GetCapacityOfArticulatedParts(engine_id);
CargoID most_cargo = CT_INVALID;
uint amount = 0;
for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
if (cap[cid] > amount) {
amount = cap[cid];
most_cargo = cid;
}
}
return most_cargo;
}
/* static */ bool AIEngine::CanRefitCargo(EngineID engine_id, CargoID cargo_id)
{
if (!IsValidEngine(engine_id)) return false;
if (!AICargo::IsValidCargo(cargo_id)) return false;
return HasBit(::GetUnionOfArticulatedRefitMasks(engine_id, true), cargo_id);
}
/* static */ bool AIEngine::CanPullCargo(EngineID engine_id, CargoID cargo_id)
{
if (!IsValidEngine(engine_id)) return false;
if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
if (!AICargo::IsValidCargo(cargo_id)) return false;
return (::RailVehInfo(engine_id)->ai_passenger_only != 1) || AICargo::HasCargoClass(cargo_id, AICargo::CC_PASSENGERS);
}
/* static */ int32 AIEngine::GetCapacity(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
const Engine *e = ::Engine::Get(engine_id);
switch (e->type) {
case VEH_ROAD:
case VEH_TRAIN: {
CargoArray capacities = GetCapacityOfArticulatedParts(engine_id);
for (CargoID c = 0; c < NUM_CARGO; c++) {
if (capacities[c] == 0) continue;
return capacities[c];
}
return -1;
} break;
case VEH_SHIP:
case VEH_AIRCRAFT:
return e->GetDisplayDefaultCapacity();
break;
default: NOT_REACHED();
}
}
/* static */ int32 AIEngine::GetReliability(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
if (GetVehicleType(engine_id) == AIVehicle::VT_RAIL && IsWagon(engine_id)) return -1;
return ::ToPercent16(::Engine::Get(engine_id)->reliability);
}
/* static */ int32 AIEngine::GetMaxSpeed(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
const Engine *e = ::Engine::Get(engine_id);
int32 max_speed = e->GetDisplayMaxSpeed(); // km-ish/h
if (e->type == VEH_AIRCRAFT) max_speed /= _settings_game.vehicle.plane_speed;
return max_speed;
}
/* static */ Money AIEngine::GetPrice(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
return ::Engine::Get(engine_id)->GetCost();
}
/* static */ int32 AIEngine::GetMaxAge(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
if (GetVehicleType(engine_id) == AIVehicle::VT_RAIL && IsWagon(engine_id)) return -1;
return ::Engine::Get(engine_id)->GetLifeLengthInDays();
}
/* static */ Money AIEngine::GetRunningCost(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
return ::Engine::Get(engine_id)->GetRunningCost();
}
/* static */ int32 AIEngine::GetPower(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL && GetVehicleType(engine_id) != AIVehicle::VT_ROAD) return -1;
if (IsWagon(engine_id)) return -1;
return ::Engine::Get(engine_id)->GetPower();
}
/* static */ int32 AIEngine::GetWeight(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL && GetVehicleType(engine_id) != AIVehicle::VT_ROAD) return -1;
return ::Engine::Get(engine_id)->GetDisplayWeight();
}
/* static */ int32 AIEngine::GetMaxTractiveEffort(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL && GetVehicleType(engine_id) != AIVehicle::VT_ROAD) return -1;
if (IsWagon(engine_id)) return -1;
return ::Engine::Get(engine_id)->GetDisplayMaxTractiveEffort();
}
/* static */ int32 AIEngine::GetDesignDate(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return -1;
return ::Engine::Get(engine_id)->intro_date;
}
/* static */ AIVehicle::VehicleType AIEngine::GetVehicleType(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return AIVehicle::VT_INVALID;
switch (::Engine::Get(engine_id)->type) {
case VEH_ROAD: return AIVehicle::VT_ROAD;
case VEH_TRAIN: return AIVehicle::VT_RAIL;
case VEH_SHIP: return AIVehicle::VT_WATER;
case VEH_AIRCRAFT: return AIVehicle::VT_AIR;
default: NOT_REACHED();
}
}
/* static */ bool AIEngine::IsWagon(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return false;
if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
return ::RailVehInfo(engine_id)->power == 0;
}
/* static */ bool AIEngine::CanRunOnRail(EngineID engine_id, AIRail::RailType track_rail_type)
{
if (!IsValidEngine(engine_id)) return false;
if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
if (!AIRail::IsRailTypeAvailable(track_rail_type)) return false;
return ::IsCompatibleRail((::RailType)::RailVehInfo(engine_id)->railtype, (::RailType)track_rail_type);
}
/* static */ bool AIEngine::HasPowerOnRail(EngineID engine_id, AIRail::RailType track_rail_type)
{
if (!IsValidEngine(engine_id)) return false;
if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
if (!AIRail::IsRailTypeAvailable(track_rail_type)) return false;
return ::HasPowerOnRail((::RailType)::RailVehInfo(engine_id)->railtype, (::RailType)track_rail_type);
}
/* static */ AIRoad::RoadType AIEngine::GetRoadType(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return AIRoad::ROADTYPE_INVALID;
if (GetVehicleType(engine_id) != AIVehicle::VT_ROAD) return AIRoad::ROADTYPE_INVALID;
return HasBit(::EngInfo(engine_id)->misc_flags, EF_ROAD_TRAM) ? AIRoad::ROADTYPE_TRAM : AIRoad::ROADTYPE_ROAD;
}
/* static */ AIRail::RailType AIEngine::GetRailType(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return AIRail::RAILTYPE_INVALID;
if (GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return AIRail::RAILTYPE_INVALID;
return (AIRail::RailType)(uint)::RailVehInfo(engine_id)->railtype;
}
/* static */ bool AIEngine::IsArticulated(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return false;
if (GetVehicleType(engine_id) != AIVehicle::VT_ROAD && GetVehicleType(engine_id) != AIVehicle::VT_RAIL) return false;
return CountArticulatedParts(engine_id, true) != 0;
}
/* static */ AIAirport::PlaneType AIEngine::GetPlaneType(EngineID engine_id)
{
if (!IsValidEngine(engine_id)) return AIAirport::PT_INVALID;
if (GetVehicleType(engine_id) != AIVehicle::VT_AIR) return AIAirport::PT_INVALID;
return (AIAirport::PlaneType)::AircraftVehInfo(engine_id)->subtype;
}
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