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Location: cpp/openttd-patchpack/source/src/engine.cpp - annotation
r19828:51626ff35694
35.0 KiB
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(svn r24783) -Update from WebTranslator v3.0:
basque - 825 changes by lutxiketa
danish - 7 changes by Hellwing
basque - 825 changes by lutxiketa
danish - 7 changes by Hellwing
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/*
* 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 engine.cpp Base for all engine handling. */
#include "stdafx.h"
#include "company_func.h"
#include "command_func.h"
#include "news_func.h"
#include "aircraft.h"
#include "newgrf.h"
#include "newgrf_engine.h"
#include "strings_func.h"
#include "core/random_func.hpp"
#include "window_func.h"
#include "date_func.h"
#include "autoreplace_gui.h"
#include "string_func.h"
#include "ai/ai.hpp"
#include "core/pool_func.hpp"
#include "engine_gui.h"
#include "engine_func.h"
#include "engine_base.h"
#include "company_base.h"
#include "vehicle_func.h"
#include "table/strings.h"
#include "table/engines.h"
EnginePool _engine_pool("Engine");
INSTANTIATE_POOL_METHODS(Engine)
EngineOverrideManager _engine_mngr;
/**
* Year that engine aging stops. Engines will not reduce in reliability
* and no more engines will be introduced
*/
static Year _year_engine_aging_stops;
/**
* The railtypes that have been or never will be introduced, or
* an inverse bitmap of rail types that have to be introduced. */
static uint16 _introduced_railtypes;
/** Number of engines of each vehicle type in original engine data */
const uint8 _engine_counts[4] = {
lengthof(_orig_rail_vehicle_info),
lengthof(_orig_road_vehicle_info),
lengthof(_orig_ship_vehicle_info),
lengthof(_orig_aircraft_vehicle_info),
};
/** Offset of the first engine of each vehicle type in original engine data */
const uint8 _engine_offsets[4] = {
0,
lengthof(_orig_rail_vehicle_info),
lengthof(_orig_rail_vehicle_info) + lengthof(_orig_road_vehicle_info),
lengthof(_orig_rail_vehicle_info) + lengthof(_orig_road_vehicle_info) + lengthof(_orig_ship_vehicle_info),
};
assert_compile(lengthof(_orig_rail_vehicle_info) + lengthof(_orig_road_vehicle_info) + lengthof(_orig_ship_vehicle_info) + lengthof(_orig_aircraft_vehicle_info) == lengthof(_orig_engine_info));
const uint EngineOverrideManager::NUM_DEFAULT_ENGINES = _engine_counts[VEH_TRAIN] + _engine_counts[VEH_ROAD] + _engine_counts[VEH_SHIP] + _engine_counts[VEH_AIRCRAFT];
Engine::Engine() :
name(NULL),
overrides_count(0),
overrides(NULL)
{
}
Engine::Engine(VehicleType type, EngineID base)
{
this->type = type;
this->grf_prop.local_id = base;
this->list_position = base;
/* Check if this base engine is within the original engine data range */
if (base >= _engine_counts[type]) {
/* Set model life to maximum to make wagons available */
this->info.base_life = 0xFF;
/* Set road vehicle tractive effort to the default value */
if (type == VEH_ROAD) this->u.road.tractive_effort = 0x4C;
/* Aircraft must have CT_INVALID as default, as there is no property */
if (type == VEH_AIRCRAFT) this->info.cargo_type = CT_INVALID;
/* Set visual effect to the default value */
switch (type) {
case VEH_TRAIN: this->u.rail.visual_effect = VE_DEFAULT; break;
case VEH_ROAD: this->u.road.visual_effect = VE_DEFAULT; break;
case VEH_SHIP: this->u.ship.visual_effect = VE_DEFAULT; break;
default: break; // The aircraft, disasters and especially visual effects have no NewGRF configured visual effects
}
/* Set cargo aging period to the default value. */
this->info.cargo_age_period = CARGO_AGING_TICKS;
return;
}
/* Copy the original engine info for this slot */
this->info = _orig_engine_info[_engine_offsets[type] + base];
/* Copy the original engine data for this slot */
switch (type) {
default: NOT_REACHED();
case VEH_TRAIN:
this->u.rail = _orig_rail_vehicle_info[base];
this->original_image_index = this->u.rail.image_index;
this->info.string_id = STR_VEHICLE_NAME_TRAIN_ENGINE_RAIL_KIRBY_PAUL_TANK_STEAM + base;
/* Set the default model life of original wagons to "infinite" */
if (this->u.rail.railveh_type == RAILVEH_WAGON) this->info.base_life = 0xFF;
break;
case VEH_ROAD:
this->u.road = _orig_road_vehicle_info[base];
this->original_image_index = this->u.road.image_index;
this->info.string_id = STR_VEHICLE_NAME_ROAD_VEHICLE_MPS_REGAL_BUS + base;
break;
case VEH_SHIP:
this->u.ship = _orig_ship_vehicle_info[base];
this->original_image_index = this->u.ship.image_index;
this->info.string_id = STR_VEHICLE_NAME_SHIP_MPS_OIL_TANKER + base;
break;
case VEH_AIRCRAFT:
this->u.air = _orig_aircraft_vehicle_info[base];
this->original_image_index = this->u.air.image_index;
this->info.string_id = STR_VEHICLE_NAME_AIRCRAFT_SAMPSON_U52 + base;
break;
}
}
Engine::~Engine()
{
UnloadWagonOverrides(this);
free(this->name);
}
/**
* Checks whether the engine is a valid (non-articulated part of an) engine.
* @return true if enabled
*/
bool Engine::IsEnabled() const
{
return this->info.string_id != STR_NEWGRF_INVALID_ENGINE && HasBit(this->info.climates, _settings_game.game_creation.landscape);
}
/**
* Retrieve the GRF ID of the NewGRF the engine is tied to.
* This is the GRF providing the Action 3.
* @return GRF ID of the associated NewGRF.
*/
uint32 Engine::GetGRFID() const
{
const GRFFile *file = this->GetGRF();
return file == NULL ? 0 : file->grfid;
}
/**
* Determines whether an engine can carry something.
* A vehicle cannot carry anything if its capacity is zero, or none of the possible cargoes is available in the climate.
* @return true if the vehicle can carry something.
*/
bool Engine::CanCarryCargo() const
{
/* For engines that can appear in a consist (i.e. rail vehicles and (articulated) road vehicles), a capacity
* of zero is a special case, to define the vehicle to not carry anything. The default cargotype is still used
* for livery selection etc.
* Note: Only the property is tested. A capacity callback returning 0 does not have the same effect.
*/
switch (this->type) {
case VEH_TRAIN:
if (this->u.rail.capacity == 0) return false;
break;
case VEH_ROAD:
if (this->u.road.capacity == 0) return false;
break;
case VEH_SHIP:
case VEH_AIRCRAFT:
break;
default: NOT_REACHED();
}
return this->GetDefaultCargoType() != CT_INVALID;
}
/**
* Determines capacity of a given vehicle from scratch.
* For aircraft the main capacity is determined. Mail might be present as well.
* @param v Vehicle of interest; NULL in purchase list
* @param mail_capacity returns secondary cargo (mail) capacity of aircraft
* @return Capacity
*/
uint Engine::DetermineCapacity(const Vehicle *v, uint16 *mail_capacity) const
{
assert(v == NULL || this->index == v->engine_type);
if (mail_capacity != NULL) *mail_capacity = 0;
if (!this->CanCarryCargo()) return 0;
bool new_multipliers = HasBit(this->info.misc_flags, EF_NO_DEFAULT_CARGO_MULTIPLIER);
CargoID default_cargo = this->GetDefaultCargoType();
CargoID cargo_type = (v != NULL) ? v->cargo_type : default_cargo;
if (mail_capacity != NULL && this->type == VEH_AIRCRAFT && IsCargoInClass(cargo_type, CC_PASSENGERS)) {
*mail_capacity = GetEngineProperty(this->index, PROP_AIRCRAFT_MAIL_CAPACITY, this->u.air.mail_capacity, v);
}
/* Check the refit capacity callback if we are not in the default configuration, or if we are using the new multiplier algorithm. */
if (HasBit(this->info.callback_mask, CBM_VEHICLE_REFIT_CAPACITY) &&
(new_multipliers || default_cargo != cargo_type || (v != NULL && v->cargo_subtype != 0))) {
uint16 callback = GetVehicleCallback(CBID_VEHICLE_REFIT_CAPACITY, 0, 0, this->index, v);
if (callback != CALLBACK_FAILED) return callback;
}
/* Get capacity according to property resp. CB */
uint capacity;
uint extra_mail_cap = 0;
switch (this->type) {
case VEH_TRAIN:
capacity = GetEngineProperty(this->index, PROP_TRAIN_CARGO_CAPACITY, this->u.rail.capacity, v);
/* In purchase list add the capacity of the second head. Always use the plain property for this. */
if (v == NULL && this->u.rail.railveh_type == RAILVEH_MULTIHEAD) capacity += this->u.rail.capacity;
break;
case VEH_ROAD:
capacity = GetEngineProperty(this->index, PROP_ROADVEH_CARGO_CAPACITY, this->u.road.capacity, v);
break;
case VEH_SHIP:
capacity = GetEngineProperty(this->index, PROP_SHIP_CARGO_CAPACITY, this->u.ship.capacity, v);
break;
case VEH_AIRCRAFT:
capacity = GetEngineProperty(this->index, PROP_AIRCRAFT_PASSENGER_CAPACITY, this->u.air.passenger_capacity, v);
if (!IsCargoInClass(cargo_type, CC_PASSENGERS)) {
extra_mail_cap = GetEngineProperty(this->index, PROP_AIRCRAFT_MAIL_CAPACITY, this->u.air.mail_capacity, v);
}
if (!new_multipliers && cargo_type == CT_MAIL) return capacity + extra_mail_cap;
default_cargo = CT_PASSENGERS; // Always use 'passengers' wrt. cargo multipliers
break;
default: NOT_REACHED();
}
if (!new_multipliers) {
/* Use the passenger multiplier for mail as well */
capacity += extra_mail_cap;
extra_mail_cap = 0;
}
/* Apply multipliers depending on cargo- and vehicletype. */
if (new_multipliers || (this->type != VEH_SHIP && default_cargo != cargo_type)) {
uint16 default_multiplier = new_multipliers ? 0x100 : CargoSpec::Get(default_cargo)->multiplier;
uint16 cargo_multiplier = CargoSpec::Get(cargo_type)->multiplier;
capacity *= cargo_multiplier;
if (extra_mail_cap > 0) {
uint mail_multiplier = CargoSpec::Get(CT_MAIL)->multiplier;
capacity += (default_multiplier * extra_mail_cap * cargo_multiplier + mail_multiplier / 2) / mail_multiplier;
}
capacity = (capacity + default_multiplier / 2) / default_multiplier;
}
return capacity;
}
/**
* Return how much the running costs of this engine are.
* @return Yearly running cost of the engine.
*/
Money Engine::GetRunningCost() const
{
Price base_price;
uint cost_factor;
switch (this->type) {
case VEH_ROAD:
base_price = this->u.road.running_cost_class;
if (base_price == INVALID_PRICE) return 0;
cost_factor = GetEngineProperty(this->index, PROP_ROADVEH_RUNNING_COST_FACTOR, this->u.road.running_cost);
break;
case VEH_TRAIN:
base_price = this->u.rail.running_cost_class;
if (base_price == INVALID_PRICE) return 0;
cost_factor = GetEngineProperty(this->index, PROP_TRAIN_RUNNING_COST_FACTOR, this->u.rail.running_cost);
break;
case VEH_SHIP:
base_price = PR_RUNNING_SHIP;
cost_factor = GetEngineProperty(this->index, PROP_SHIP_RUNNING_COST_FACTOR, this->u.ship.running_cost);
break;
case VEH_AIRCRAFT:
base_price = PR_RUNNING_AIRCRAFT;
cost_factor = GetEngineProperty(this->index, PROP_AIRCRAFT_RUNNING_COST_FACTOR, this->u.air.running_cost);
break;
default: NOT_REACHED();
}
return GetPrice(base_price, cost_factor, this->GetGRF(), -8);
}
/**
* Return how much a new engine costs.
* @return Cost of the engine.
*/
Money Engine::GetCost() const
{
Price base_price;
uint cost_factor;
switch (this->type) {
case VEH_ROAD:
base_price = PR_BUILD_VEHICLE_ROAD;
cost_factor = GetEngineProperty(this->index, PROP_ROADVEH_COST_FACTOR, this->u.road.cost_factor);
break;
case VEH_TRAIN:
if (this->u.rail.railveh_type == RAILVEH_WAGON) {
base_price = PR_BUILD_VEHICLE_WAGON;
cost_factor = GetEngineProperty(this->index, PROP_TRAIN_COST_FACTOR, this->u.rail.cost_factor);
} else {
base_price = PR_BUILD_VEHICLE_TRAIN;
cost_factor = GetEngineProperty(this->index, PROP_TRAIN_COST_FACTOR, this->u.rail.cost_factor);
}
break;
case VEH_SHIP:
base_price = PR_BUILD_VEHICLE_SHIP;
cost_factor = GetEngineProperty(this->index, PROP_SHIP_COST_FACTOR, this->u.ship.cost_factor);
break;
case VEH_AIRCRAFT:
base_price = PR_BUILD_VEHICLE_AIRCRAFT;
cost_factor = GetEngineProperty(this->index, PROP_AIRCRAFT_COST_FACTOR, this->u.air.cost_factor);
break;
default: NOT_REACHED();
}
return GetPrice(base_price, cost_factor, this->GetGRF(), -8);
}
/**
* Returns max speed of the engine for display purposes
* @return max speed in km-ish/h
*/
uint Engine::GetDisplayMaxSpeed() const
{
switch (this->type) {
case VEH_TRAIN:
return GetEngineProperty(this->index, PROP_TRAIN_SPEED, this->u.rail.max_speed);
case VEH_ROAD: {
uint max_speed = GetEngineProperty(this->index, PROP_ROADVEH_SPEED, 0);
return (max_speed != 0) ? max_speed * 2 : this->u.road.max_speed / 2;
}
case VEH_SHIP:
return GetEngineProperty(this->index, PROP_SHIP_SPEED, this->u.ship.max_speed) / 2;
case VEH_AIRCRAFT: {
uint max_speed = GetEngineProperty(this->index, PROP_AIRCRAFT_SPEED, 0);
if (max_speed != 0) {
return (max_speed * 128) / 10;
}
return this->u.air.max_speed;
}
default: NOT_REACHED();
}
}
/**
* Returns the power of the engine for display
* and sorting purposes.
* Only trains and road vehicles have power
* @return power in display units hp
*/
uint Engine::GetPower() const
{
/* Only trains and road vehicles have 'power'. */
switch (this->type) {
case VEH_TRAIN:
return GetEngineProperty(this->index, PROP_TRAIN_POWER, this->u.rail.power);
case VEH_ROAD:
return GetEngineProperty(this->index, PROP_ROADVEH_POWER, this->u.road.power) * 10;
default: NOT_REACHED();
}
}
/**
* Returns the weight of the engine for display purposes.
* For dual-headed train-engines this is the weight of both heads
* @return weight in display units metric tons
*/
uint Engine::GetDisplayWeight() const
{
/* Only trains and road vehicles have 'weight'. */
switch (this->type) {
case VEH_TRAIN:
return GetEngineProperty(this->index, PROP_TRAIN_WEIGHT, this->u.rail.weight) << (this->u.rail.railveh_type == RAILVEH_MULTIHEAD ? 1 : 0);
case VEH_ROAD:
return GetEngineProperty(this->index, PROP_ROADVEH_WEIGHT, this->u.road.weight) / 4;
default: NOT_REACHED();
}
}
/**
* Returns the tractive effort of the engine for display purposes.
* For dual-headed train-engines this is the tractive effort of both heads
* @return tractive effort in display units kN
*/
uint Engine::GetDisplayMaxTractiveEffort() const
{
/* Only trains and road vehicles have 'tractive effort'. */
switch (this->type) {
case VEH_TRAIN:
return (10 * this->GetDisplayWeight() * GetEngineProperty(this->index, PROP_TRAIN_TRACTIVE_EFFORT, this->u.rail.tractive_effort)) / 256;
case VEH_ROAD:
return (10 * this->GetDisplayWeight() * GetEngineProperty(this->index, PROP_ROADVEH_TRACTIVE_EFFORT, this->u.road.tractive_effort)) / 256;
default: NOT_REACHED();
}
}
/**
* Returns the vehicle's (not model's!) life length in days.
* @return the life length
*/
Date Engine::GetLifeLengthInDays() const
{
/* Assume leap years; this gives the player a bit more than the given amount of years, but never less. */
return (this->info.lifelength + _settings_game.vehicle.extend_vehicle_life) * DAYS_IN_LEAP_YEAR;
}
/**
* Get the range of an aircraft type.
* @return Range of the aircraft type in tiles or 0 if unlimited range.
*/
uint16 Engine::GetRange() const
{
switch (this->type) {
case VEH_AIRCRAFT:
return GetEngineProperty(this->index, PROP_AIRCRAFT_RANGE, this->u.air.max_range);
default: NOT_REACHED();
}
}
/**
* Initializes the EngineOverrideManager with the default engines.
*/
void EngineOverrideManager::ResetToDefaultMapping()
{
this->Clear();
for (VehicleType type = VEH_TRAIN; type <= VEH_AIRCRAFT; type++) {
for (uint internal_id = 0; internal_id < _engine_counts[type]; internal_id++) {
EngineIDMapping *eid = this->Append();
eid->type = type;
eid->grfid = INVALID_GRFID;
eid->internal_id = internal_id;
eid->substitute_id = internal_id;
}
}
}
/**
* Looks up an EngineID in the EngineOverrideManager
* @param type Vehicle type
* @param grf_local_id The local id in the newgrf
* @param grfid The GrfID that defines the scope of grf_local_id.
* If a newgrf overrides the engines of another newgrf, the "scope grfid" is the ID of the overridden newgrf.
* If dynnamic_engines is disabled, all newgrf share the same ID scope identified by INVALID_GRFID.
* @return The engine ID if present, or INVALID_ENGINE if not.
*/
EngineID EngineOverrideManager::GetID(VehicleType type, uint16 grf_local_id, uint32 grfid)
{
const EngineIDMapping *end = this->End();
EngineID index = 0;
for (const EngineIDMapping *eid = this->Begin(); eid != end; eid++, index++) {
if (eid->type == type && eid->grfid == grfid && eid->internal_id == grf_local_id) {
return index;
}
}
return INVALID_ENGINE;
}
/**
* Tries to reset the engine mapping to match the current NewGRF configuration.
* This is only possible when there are currently no vehicles in the game.
* @return false if resetting failed due to present vehicles.
*/
bool EngineOverrideManager::ResetToCurrentNewGRFConfig()
{
const Vehicle *v;
FOR_ALL_VEHICLES(v) {
if (IsCompanyBuildableVehicleType(v)) return false;
}
/* Reset the engines, they will get new EngineIDs */
_engine_mngr.ResetToDefaultMapping();
ReloadNewGRFData();
return true;
}
/**
* Initialise the engine pool with the data from the original vehicles.
*/
void SetupEngines()
{
DeleteWindowByClass(WC_ENGINE_PREVIEW);
_engine_pool.CleanPool();
assert(_engine_mngr.Length() >= _engine_mngr.NUM_DEFAULT_ENGINES);
const EngineIDMapping *end = _engine_mngr.End();
uint index = 0;
for (const EngineIDMapping *eid = _engine_mngr.Begin(); eid != end; eid++, index++) {
/* Assert is safe; there won't be more than 256 original vehicles
* in any case, and we just cleaned the pool. */
assert(Engine::CanAllocateItem());
const Engine *e = new Engine(eid->type, eid->internal_id);
assert(e->index == index);
}
_introduced_railtypes = 0;
}
/**
* Check whether the railtypes should be introduced.
*/
static void CheckRailIntroduction()
{
/* All railtypes have been introduced. */
if (_introduced_railtypes == UINT16_MAX || Company::GetPoolSize() == 0) return;
/* We need to find the railtypes that are known to all companies. */
RailTypes rts = (RailTypes)UINT16_MAX;
/* We are at, or past the introduction date of the rail. */
Company *c;
FOR_ALL_COMPANIES(c) {
c->avail_railtypes = AddDateIntroducedRailTypes(c->avail_railtypes, _date);
rts &= c->avail_railtypes;
}
_introduced_railtypes |= rts;
}
void ShowEnginePreviewWindow(EngineID engine);
/**
* Determine whether an engine type is a wagon (and not a loco).
* @param index %Engine getting queried.
* @return Whether the queried engine is a wagon.
*/
static bool IsWagon(EngineID index)
{
const Engine *e = Engine::Get(index);
return e->type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON;
}
/**
* Update #reliability of engine \a e, (if needed) update the engine GUIs.
* @param e %Engine to update.
*/
static void CalcEngineReliability(Engine *e)
{
uint age = e->age;
/* Check for early retirement */
if (e->company_avail != 0 && !_settings_game.vehicle.never_expire_vehicles && e->info.base_life != 0xFF) {
int retire_early = e->info.retire_early;
uint retire_early_max_age = max(0, e->duration_phase_1 + e->duration_phase_2 - retire_early * 12);
if (retire_early != 0 && age >= retire_early_max_age) {
/* Early retirement is enabled and we're past the date... */
e->company_avail = 0;
AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
}
}
if (age < e->duration_phase_1) {
uint start = e->reliability_start;
e->reliability = age * (e->reliability_max - start) / e->duration_phase_1 + start;
} else if ((age -= e->duration_phase_1) < e->duration_phase_2 || _settings_game.vehicle.never_expire_vehicles || e->info.base_life == 0xFF) {
/* We are at the peak of this engines life. It will have max reliability.
* This is also true if the engines never expire. They will not go bad over time */
e->reliability = e->reliability_max;
} else if ((age -= e->duration_phase_2) < e->duration_phase_3) {
uint max = e->reliability_max;
e->reliability = (int)age * (int)(e->reliability_final - max) / e->duration_phase_3 + max;
} else {
/* time's up for this engine.
* We will now completely retire this design */
e->company_avail = 0;
e->reliability = e->reliability_final;
/* Kick this engine out of the lists */
AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
}
SetWindowClassesDirty(WC_BUILD_VEHICLE); // Update to show the new reliability
SetWindowClassesDirty(WC_REPLACE_VEHICLE);
}
/** Compute the value for #_year_engine_aging_stops. */
void SetYearEngineAgingStops()
{
/* Determine last engine aging year, default to 2050 as previously. */
_year_engine_aging_stops = 2050;
const Engine *e;
FOR_ALL_ENGINES(e) {
const EngineInfo *ei = &e->info;
/* Exclude certain engines */
if (!HasBit(ei->climates, _settings_game.game_creation.landscape)) continue;
if (e->type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON) continue;
/* Base year ending date on half the model life */
YearMonthDay ymd;
ConvertDateToYMD(ei->base_intro + (ei->lifelength * DAYS_IN_LEAP_YEAR) / 2, &ymd);
_year_engine_aging_stops = max(_year_engine_aging_stops, ymd.year);
}
}
/**
* Start/initialise one engine.
* @param e The engine to initialise.
* @param aging_date The date used for age calculations.
*/
void StartupOneEngine(Engine *e, Date aging_date)
{
const EngineInfo *ei = &e->info;
e->age = 0;
e->flags = 0;
e->company_avail = 0;
/* Don't randomise the start-date in the first two years after gamestart to ensure availability
* of engines in early starting games.
* Note: TTDP uses fixed 1922 */
uint32 r = Random();
e->intro_date = ei->base_intro <= ConvertYMDToDate(_settings_game.game_creation.starting_year + 2, 0, 1) ? ei->base_intro : (Date)GB(r, 0, 9) + ei->base_intro;
if (e->intro_date <= _date) {
e->age = (aging_date - e->intro_date) >> 5;
e->company_avail = (CompanyMask)-1;
e->flags |= ENGINE_AVAILABLE;
}
e->reliability_start = GB(r, 16, 14) + 0x7AE0;
r = Random();
e->reliability_max = GB(r, 0, 14) + 0xBFFF;
e->reliability_final = GB(r, 16, 14) + 0x3FFF;
r = Random();
e->duration_phase_1 = GB(r, 0, 5) + 7;
e->duration_phase_2 = GB(r, 5, 4) + ei->base_life * 12 - 96;
e->duration_phase_3 = GB(r, 9, 7) + 120;
e->reliability_spd_dec = ei->decay_speed << 2;
CalcEngineReliability(e);
/* prevent certain engines from ever appearing. */
if (!HasBit(ei->climates, _settings_game.game_creation.landscape)) {
e->flags |= ENGINE_AVAILABLE;
e->company_avail = 0;
}
}
/**
* Start/initialise all our engines. Must be called whenever there are changes
* to the NewGRF config.
*/
void StartupEngines()
{
Engine *e;
/* Aging of vehicles stops, so account for that when starting late */
const Date aging_date = min(_date, ConvertYMDToDate(_year_engine_aging_stops, 0, 1));
FOR_ALL_ENGINES(e) {
StartupOneEngine(e, aging_date);
}
/* Update the bitmasks for the vehicle lists */
Company *c;
FOR_ALL_COMPANIES(c) {
c->avail_railtypes = GetCompanyRailtypes(c->index);
c->avail_roadtypes = GetCompanyRoadtypes(c->index);
}
/* Rail types that are invalid or never introduced are marked as
* being introduced upon start. That way we can easily check whether
* there is any date related introduction that is still going to
* happen somewhere in the future. */
for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
const RailtypeInfo *rti = GetRailTypeInfo(rt);
if (rti->label != 0 && IsInsideMM(rti->introduction_date, 0, MAX_DAY)) continue;
SetBit(_introduced_railtypes, rt);
}
CheckRailIntroduction();
/* Invalidate any open purchase lists */
InvalidateWindowClassesData(WC_BUILD_VEHICLE);
}
/**
* Company \a company accepts engine \a eid for preview.
* @param eid Engine being accepted (is under preview).
* @param company Current company previewing the engine.
*/
static void AcceptEnginePreview(EngineID eid, CompanyID company)
{
Engine *e = Engine::Get(eid);
Company *c = Company::Get(company);
SetBit(e->company_avail, company);
if (e->type == VEH_TRAIN) {
assert(e->u.rail.railtype < RAILTYPE_END);
c->avail_railtypes = AddDateIntroducedRailTypes(c->avail_railtypes | GetRailTypeInfo(e->u.rail.railtype)->introduces_railtypes, _date);
} else if (e->type == VEH_ROAD) {
SetBit(c->avail_roadtypes, HasBit(e->info.misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
}
e->preview_company_rank = 0xFF;
if (company == _local_company) {
AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
}
/* Update the toolbar. */
if (e->type == VEH_ROAD) InvalidateWindowData(WC_BUILD_TOOLBAR, TRANSPORT_ROAD);
if (e->type == VEH_SHIP) InvalidateWindowData(WC_BUILD_TOOLBAR, TRANSPORT_WATER);
}
/**
* Get the N-th best company.
* @param pp Value N, 1 means best, 2 means second best, etc.
* @return N-th best company if it exists, #INVALID_COMPANY otherwise.
*/
static CompanyID GetBestCompany(uint8 pp)
{
CompanyID best_company;
CompanyMask mask = 0;
do {
int32 best_hist = -1;
best_company = INVALID_COMPANY;
const Company *c;
FOR_ALL_COMPANIES(c) {
if (c->block_preview == 0 && !HasBit(mask, c->index) &&
c->old_economy[0].performance_history > best_hist) {
best_hist = c->old_economy[0].performance_history;
best_company = c->index;
}
}
if (best_company == INVALID_COMPANY) return INVALID_COMPANY;
SetBit(mask, best_company);
} while (--pp != 0);
return best_company;
}
/**
* Checks if a vehicle type is disabled for all/ai companies.
* @param type The vehicle type which shall be checked.
* @param ai If true, check if the type is disabled for AI companies, otherwise check if
* the vehicle type is disabled for human companies.
* @return Whether or not a vehicle type is disabled.
*/
static bool IsVehicleTypeDisabled(VehicleType type, bool ai)
{
switch (type) {
case VEH_TRAIN: return _settings_game.vehicle.max_trains == 0 || (ai && _settings_game.ai.ai_disable_veh_train);
case VEH_ROAD: return _settings_game.vehicle.max_roadveh == 0 || (ai && _settings_game.ai.ai_disable_veh_roadveh);
case VEH_SHIP: return _settings_game.vehicle.max_ships == 0 || (ai && _settings_game.ai.ai_disable_veh_ship);
case VEH_AIRCRAFT: return _settings_game.vehicle.max_aircraft == 0 || (ai && _settings_game.ai.ai_disable_veh_aircraft);
default: NOT_REACHED();
}
}
/** Daily check to offer an exclusive engine preview to the companies. */
void EnginesDailyLoop()
{
CheckRailIntroduction();
if (_cur_year >= _year_engine_aging_stops) return;
Engine *e;
FOR_ALL_ENGINES(e) {
EngineID i = e->index;
if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
if (e->flags & ENGINE_OFFER_WINDOW_OPEN) {
if (e->preview_company_rank != 0xFF && !--e->preview_wait) {
e->flags &= ~ENGINE_OFFER_WINDOW_OPEN;
DeleteWindowById(WC_ENGINE_PREVIEW, i);
e->preview_company_rank++;
}
} else if (e->preview_company_rank != 0xFF) {
CompanyID best_company = GetBestCompany(e->preview_company_rank);
if (best_company == INVALID_COMPANY) {
e->preview_company_rank = 0xFF;
continue;
}
e->flags |= ENGINE_OFFER_WINDOW_OPEN;
e->preview_wait = 20;
/* AIs are intentionally not skipped for preview even if they cannot build a certain
* vehicle type. This is done to not give poor performing human companies an "unfair"
* boost that they wouldn't have gotten against other human companies. The check on
* the line below is just to make AIs not notice that they have a preview if they
* cannot build the vehicle. */
if (!IsVehicleTypeDisabled(e->type, true)) AI::NewEvent(best_company, new ScriptEventEnginePreview(i));
if (IsInteractiveCompany(best_company)) ShowEnginePreviewWindow(i);
}
}
}
}
/**
* Accept an engine prototype. XXX - it is possible that the top-company
* changes while you are waiting to accept the offer? Then it becomes invalid
* @param tile unused
* @param flags operation to perfom
* @param p1 engine-prototype offered
* @param p2 unused
* @param text unused
* @return the cost of this operation or an error
*/
CommandCost CmdWantEnginePreview(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
Engine *e = Engine::GetIfValid(p1);
if (e == NULL || GetBestCompany(e->preview_company_rank) != _current_company) return CMD_ERROR;
if (flags & DC_EXEC) AcceptEnginePreview(p1, _current_company);
return CommandCost();
}
/**
* An engine has become available for general use.
* Also handle the exclusive engine preview contract.
* @param e Engine generally available as of now.
*/
static void NewVehicleAvailable(Engine *e)
{
Vehicle *v;
Company *c;
EngineID index = e->index;
/* In case the company didn't build the vehicle during the intro period,
* prevent that company from getting future intro periods for a while. */
if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
FOR_ALL_COMPANIES(c) {
uint block_preview = c->block_preview;
if (!HasBit(e->company_avail, c->index)) continue;
/* We assume the user did NOT build it.. prove me wrong ;) */
c->block_preview = 20;
FOR_ALL_VEHICLES(v) {
if (v->type == VEH_TRAIN || v->type == VEH_ROAD || v->type == VEH_SHIP ||
(v->type == VEH_AIRCRAFT && Aircraft::From(v)->IsNormalAircraft())) {
if (v->owner == c->index && v->engine_type == index) {
/* The user did prove me wrong, so restore old value */
c->block_preview = block_preview;
break;
}
}
}
}
}
e->flags = (e->flags & ~ENGINE_EXCLUSIVE_PREVIEW) | ENGINE_AVAILABLE;
AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
/* Now available for all companies */
e->company_avail = (CompanyMask)-1;
/* Do not introduce new rail wagons */
if (IsWagon(index)) return;
if (e->type == VEH_TRAIN) {
/* maybe make another rail type available */
RailType railtype = e->u.rail.railtype;
assert(railtype < RAILTYPE_END);
FOR_ALL_COMPANIES(c) c->avail_railtypes = AddDateIntroducedRailTypes(c->avail_railtypes | GetRailTypeInfo(e->u.rail.railtype)->introduces_railtypes, _date);
} else if (e->type == VEH_ROAD) {
/* maybe make another road type available */
FOR_ALL_COMPANIES(c) SetBit(c->avail_roadtypes, HasBit(e->info.misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
}
/* Only broadcast event if AIs are able to build this vehicle type. */
if (!IsVehicleTypeDisabled(e->type, true)) AI::BroadcastNewEvent(new ScriptEventEngineAvailable(index));
/* Only provide the "New Vehicle available" news paper entry, if engine can be built. */
if (!IsVehicleTypeDisabled(e->type, false)) {
SetDParam(0, GetEngineCategoryName(index));
SetDParam(1, index);
AddNewsItem(STR_NEWS_NEW_VEHICLE_NOW_AVAILABLE_WITH_TYPE, NT_NEW_VEHICLES, NF_VEHICLE, NR_ENGINE, index);
}
/* Update the toolbar. */
if (e->type == VEH_ROAD) InvalidateWindowData(WC_BUILD_TOOLBAR, TRANSPORT_ROAD);
if (e->type == VEH_SHIP) InvalidateWindowData(WC_BUILD_TOOLBAR, TRANSPORT_WATER);
}
/** Monthly update of the availability, reliability, and preview offers of the engines. */
void EnginesMonthlyLoop()
{
if (_cur_year < _year_engine_aging_stops) {
Engine *e;
FOR_ALL_ENGINES(e) {
/* Age the vehicle */
if ((e->flags & ENGINE_AVAILABLE) && e->age != MAX_DAY) {
e->age++;
CalcEngineReliability(e);
}
/* Do not introduce invalid engines */
if (!e->IsEnabled()) continue;
if (!(e->flags & ENGINE_AVAILABLE) && _date >= (e->intro_date + DAYS_IN_YEAR)) {
/* Introduce it to all companies */
NewVehicleAvailable(e);
} else if (!(e->flags & (ENGINE_AVAILABLE | ENGINE_EXCLUSIVE_PREVIEW)) && _date >= e->intro_date) {
/* Introduction date has passed...
* Check if it is allowed to build this vehicle type at all
* based on the current game settings. If not, it does not
* make sense to show the preview dialog to any company. */
if (IsVehicleTypeDisabled(e->type, false)) continue;
/* Show preview dialog to one of the companies. */
e->flags |= ENGINE_EXCLUSIVE_PREVIEW;
/* Do not introduce new rail wagons */
if (!IsWagon(e->index)) {
e->preview_company_rank = 1; // Give to the company with the highest rating.
}
}
}
InvalidateWindowClassesData(WC_BUILD_VEHICLE); // rebuild the purchase list (esp. when sorted by reliability)
}
}
/**
* Is \a name still free as name for an engine?
* @param name New name of an engine.
* @return \c false if the name is being used already, else \c true.
*/
static bool IsUniqueEngineName(const char *name)
{
const Engine *e;
FOR_ALL_ENGINES(e) {
if (e->name != NULL && strcmp(e->name, name) == 0) return false;
}
return true;
}
/**
* Rename an engine.
* @param tile unused
* @param flags operation to perfom
* @param p1 engine ID to rename
* @param p2 unused
* @param text the new name or an empty string when resetting to the default
* @return the cost of this operation or an error
*/
CommandCost CmdRenameEngine(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
Engine *e = Engine::GetIfValid(p1);
if (e == NULL) return CMD_ERROR;
bool reset = StrEmpty(text);
if (!reset) {
if (Utf8StringLength(text) >= MAX_LENGTH_ENGINE_NAME_CHARS) return CMD_ERROR;
if (!IsUniqueEngineName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
}
if (flags & DC_EXEC) {
free(e->name);
if (reset) {
e->name = NULL;
} else {
e->name = strdup(text);
}
MarkWholeScreenDirty();
}
return CommandCost();
}
/**
* Check if an engine is buildable.
* @param engine index of the engine to check.
* @param type the type the engine should be.
* @param company index of the company.
* @return True if an engine is valid, of the specified type, and buildable by
* the given company.
*/
bool IsEngineBuildable(EngineID engine, VehicleType type, CompanyID company)
{
const Engine *e = Engine::GetIfValid(engine);
/* check if it's an engine that is in the engine array */
if (e == NULL) return false;
/* check if it's an engine of specified type */
if (e->type != type) return false;
/* check if it's available ... */
if (company == OWNER_DEITY) {
/* ... for any company (preview does not count) */
if (!(e->flags & ENGINE_AVAILABLE) || e->company_avail == 0) return false;
} else {
/* ... for this company */
if (!HasBit(e->company_avail, company)) return false;
}
if (!e->IsEnabled()) return false;
if (type == VEH_TRAIN && company != OWNER_DEITY) {
/* Check if the rail type is available to this company */
const Company *c = Company::Get(company);
if (((GetRailTypeInfo(e->u.rail.railtype))->compatible_railtypes & c->avail_railtypes) == 0) return false;
}
return true;
}
/**
* Check if an engine is refittable.
* Note: Likely you want to use IsArticulatedVehicleRefittable().
* @param engine index of the engine to check.
* @return true if the engine is refittable.
*/
bool IsEngineRefittable(EngineID engine)
{
const Engine *e = Engine::GetIfValid(engine);
/* check if it's an engine that is in the engine array */
if (e == NULL) return false;
if (!e->CanCarryCargo()) return false;
const EngineInfo *ei = &e->info;
if (ei->refit_mask == 0) return false;
/* Are there suffixes?
* Note: This does not mean the suffixes are actually available for every consist at any time. */
if (HasBit(ei->callback_mask, CBM_VEHICLE_CARGO_SUFFIX)) return true;
/* Is there any cargo except the default cargo? */
CargoID default_cargo = e->GetDefaultCargoType();
return default_cargo != CT_INVALID && ei->refit_mask != 1U << default_cargo;
}
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