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(svn r23176) -Codechange: Deduplicate code between Engine::DetermineCapacity() and Engine::GetDisplayDefaultCapacity().

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This commit is contained in:
frosch 2011-11-09 16:41:36 +00:00
parent 88b2e687c2
commit 0fbad47371
2 changed files with 31 additions and 57 deletions
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70
src/engine.cpp
View File

@ -200,27 +200,28 @@ bool Engine::CanCarryCargo() const
/**
* Determines capacity of a given vehicle from scratch.
* For aircraft the main capacity is determined. Mail might be present as well.
* @note Keep this function consistent with Engine::GetDisplayDefaultCapacity().
* @param v Vehicle of interest
* @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(this->index == v->engine_type);
assert(v == NULL || this->index == v->engine_type);
if (mail_capacity != NULL) *mail_capacity = 0;
if (!this->CanCarryCargo()) return 0;
if (mail_capacity != NULL && this->type == VEH_AIRCRAFT && IsCargoInClass(v->cargo_type, CC_PASSENGERS)) {
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);
}
CargoID default_cargo = this->GetDefaultCargoType();
/* 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. */
if (HasBit(this->info.callback_mask, CBM_VEHICLE_REFIT_CAPACITY) &&
(default_cargo != v->cargo_type || v->cargo_subtype != 0)) {
(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;
}
@ -230,6 +231,9 @@ uint Engine::DetermineCapacity(const Vehicle *v, uint16 *mail_capacity) const
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:
@ -242,10 +246,10 @@ 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(v->cargo_type, CC_PASSENGERS)) {
if (!IsCargoInClass(cargo_type, CC_PASSENGERS)) {
capacity += GetEngineProperty(this->index, PROP_AIRCRAFT_MAIL_CAPACITY, this->u.air.mail_capacity, v);
}
if (v->cargo_type == CT_MAIL) return capacity;
if (cargo_type == CT_MAIL) return capacity;
default_cargo = CT_PASSENGERS; // Always use 'passengers' wrt. cargo multipliers
break;
@ -254,14 +258,14 @@ uint Engine::DetermineCapacity(const Vehicle *v, uint16 *mail_capacity) const
/* Apply multipliers depending on cargo- and vehicletype.
* Note: This might change to become more consistent/flexible. */
if (this->type != VEH_SHIP) {
if (this->type != VEH_SHIP && default_cargo != cargo_type) {
switch (default_cargo) {
case CT_PASSENGERS: break;
case CT_MAIL:
case CT_GOODS: capacity *= 2; break;
default: capacity *= 4; break;
}
switch (v->cargo_type) {
switch (cargo_type) {
case CT_PASSENGERS: break;
case CT_MAIL:
case CT_GOODS: capacity /= 2; break;
@ -272,52 +276,6 @@ uint Engine::DetermineCapacity(const Vehicle *v, uint16 *mail_capacity) const
return capacity;
}
/**
* Determines the default cargo capacity of an engine for display purposes.
*
* For planes carrying both passenger and mail this is the passenger capacity.
* For multiheaded engines this is the capacity of both heads.
* For articulated engines use GetCapacityOfArticulatedParts
*
* @note Keep this function consistent with Engine::DetermineCapacity().
* @param mail_capacity returns secondary cargo (mail) capacity of aircraft
* @return The default capacity
* @see GetDefaultCargoType
*/
uint Engine::GetDisplayDefaultCapacity(uint16 *mail_capacity) const
{
if (mail_capacity != NULL) *mail_capacity = 0;
if (!this->CanCarryCargo()) return 0;
switch (type) {
case VEH_TRAIN:
return GetEngineProperty(this->index, PROP_TRAIN_CARGO_CAPACITY, this->u.rail.capacity) + (this->u.rail.railveh_type == RAILVEH_MULTIHEAD ? this->u.rail.capacity : 0);
case VEH_ROAD:
return GetEngineProperty(this->index, PROP_ROADVEH_CARGO_CAPACITY, this->u.road.capacity);
case VEH_SHIP:
return GetEngineProperty(this->index, PROP_SHIP_CARGO_CAPACITY, this->u.ship.capacity);
case VEH_AIRCRAFT: {
uint capacity = GetEngineProperty(this->index, PROP_AIRCRAFT_PASSENGER_CAPACITY, this->u.air.passenger_capacity);
CargoID cargo = this->GetDefaultCargoType();
if (IsCargoInClass(cargo, CC_PASSENGERS)) {
if (mail_capacity != NULL) *mail_capacity = GetEngineProperty(this->index, PROP_AIRCRAFT_MAIL_CAPACITY, this->u.air.mail_capacity);
} else {
capacity += GetEngineProperty(this->index, PROP_AIRCRAFT_MAIL_CAPACITY, this->u.air.mail_capacity);
}
switch (cargo) {
case CT_PASSENGERS:
case CT_MAIL: return capacity;
case CT_GOODS: return capacity / 2;
default: return capacity / 4;
}
}
default: NOT_REACHED();
}
}
/**
* Return how much the running costs of this engine are.
* @return Yearly running cost of the engine.

18
src/engine_base.h
View File

@ -86,7 +86,23 @@ struct Engine : EnginePool::PoolItem<&_engine_pool> {
uint DetermineCapacity(const Vehicle *v, uint16 *mail_capacity = NULL) const;
bool CanCarryCargo() const;
uint GetDisplayDefaultCapacity(uint16 *mail_capacity = NULL) const;
/**
* Determines the default cargo capacity of an engine for display purposes.
*
* For planes carrying both passenger and mail this is the passenger capacity.
* For multiheaded engines this is the capacity of both heads.
* For articulated engines use GetCapacityOfArticulatedParts
*
* @param mail_capacity returns secondary cargo (mail) capacity of aircraft
* @return The default capacity
* @see GetDefaultCargoType
*/
uint GetDisplayDefaultCapacity(uint16 *mail_capacity = NULL) const
{
return this->DetermineCapacity(NULL, mail_capacity);
}
Money GetRunningCost() const;
Money GetCost() const;
uint GetDisplayMaxSpeed() const;