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(svn r23861) -Feature: [NewGRF] New algorithm (activated via an engine flag) to determine the capacity of vehicles. This allows vehicles to better control the capacity for cargotypes which they know; and let cargo NewGRFs influence the capacity for cargos the vehicle NewGRF does not know, but which the vehicle is refittable to due to cargo classes.

release/1.2
frosch 2012-01-28 12:11:23 +00:00
parent 90c53046c7
commit 1777809e14
2 changed files with 22 additions and 10 deletions
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31
src/engine.cpp
View File

@ -210,6 +210,7 @@ uint Engine::DetermineCapacity(const Vehicle *v, uint16 *mail_capacity) const
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;
@ -217,16 +218,16 @@ uint Engine::DetermineCapacity(const Vehicle *v, uint16 *mail_capacity) const
*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.
* Note: This might change to become more consistent/flexible/sane, esp. when default cargo is first refittable. */
/* 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) &&
(default_cargo != cargo_type || (v != NULL && v->cargo_subtype != 0))) {
(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);
@ -246,21 +247,31 @@ uint Engine::DetermineCapacity(const Vehicle *v, uint16 *mail_capacity) const
case VEH_AIRCRAFT:
capacity = GetEngineProperty(this->index, PROP_AIRCRAFT_PASSENGER_CAPACITY, this->u.air.passenger_capacity, v);
if (!IsCargoInClass(cargo_type, CC_PASSENGERS)) {
capacity += GetEngineProperty(this->index, PROP_AIRCRAFT_MAIL_CAPACITY, this->u.air.mail_capacity, v);
extra_mail_cap = GetEngineProperty(this->index, PROP_AIRCRAFT_MAIL_CAPACITY, this->u.air.mail_capacity, v);
}
if (cargo_type == CT_MAIL) return capacity;
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();
}
/* Apply multipliers depending on cargo- and vehicletype.
* Note: This might change to become more consistent/flexible. */
if (this->type != VEH_SHIP && default_cargo != cargo_type) {
uint16 default_multiplier = CargoSpec::Get(default_cargo)->multiplier;
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 = (capacity * cargo_multiplier + default_multiplier / 2) / default_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;

1
src/engine_type.h
View File

@ -156,6 +156,7 @@ enum EngineMiscFlags {
EF_RAIL_IS_MU = 2, ///< Rail vehicle is a multiple-unit (DMU/EMU)
EF_RAIL_FLIPS = 3, ///< Rail vehicle can be flipped in the depot
EF_AUTO_REFIT = 4, ///< Automatic refitting is allowed
EF_NO_DEFAULT_CARGO_MULTIPLIER = 5, ///< Use the new capacity algorithm. The default cargotype of the vehicle does not affect capacity multipliers. CB 15 is also called in purchase list.
};
/**