LinkRefresher Class Reference

Utility to refresh links a consist will visit. More...

#include <refresh.h>

Data Structures
struct	Hop
	A hop the refresh algorithm might evaluate. More...
struct	RefitDesc
	Simulated cargo type and capacity for prediction of future links. More...

Static Public Member Functions
static void	Run (Vehicle *v, bool allow_merge=true, bool is_full_loading=false)
	Refresh all links the given vehicle will visit. More...

Protected Types
enum	RefreshFlags {   USE_NEXT , HAS_CARGO , WAS_REFIT , RESET_REFIT ,   IN_AUTOREFIT }
	Various flags about properties of the last examined link that might have an influence on the next one. More...
typedef std::vector< RefitDesc >	RefitList
typedef std::set< Hop >	HopSet

Protected Member Functions
	LinkRefresher (Vehicle *v, HopSet *seen_hops, bool allow_merge, bool is_full_loading)
	Constructor for link refreshing algorithm. More...
bool	HandleRefit (CargoID refit_cargo)
	Handle refit orders by updating capacities and refit_capacities. More...
void	ResetRefit ()
	Restore capacities and refit_capacities as vehicle might have been able to load now.
void	RefreshStats (const Order *cur, const Order *next)
	Refresh link stats for the given pair of orders. More...
const Order *	PredictNextOrder (const Order *cur, const Order *next, uint8_t flags, uint num_hops=0)
	Predict the next order the vehicle will execute and resolve conditionals by recursion and return next non-conditional order in list. More...
void	RefreshLinks (const Order *cur, const Order *next, uint8_t flags, uint num_hops=0)
	Iterate over orders starting at cur and next and refresh links associated with them. More...

Protected Attributes
Vehicle *	vehicle
	Vehicle for which the links should be refreshed.
uint	capacities [NUM_CARGO]
	Current added capacities per cargo ID in the consist.
RefitList	refit_capacities
	Current state of capacity remaining from previous refits versus overall capacity per vehicle in the consist.
HopSet *	seen_hops
	Hops already seen. If the same hop is seen twice we stop the algorithm. This is shared between all Refreshers of the same run.
CargoID	cargo
	Cargo given in last refit order.
bool	allow_merge
	If the refresher is allowed to merge or extend link graphs.
bool	is_full_loading
	If the vehicle is full loading.

Detailed Description

Utility to refresh links a consist will visit.

Definition at line 19 of file refresh.h.

Member Enumeration Documentation

RefreshFlags

enum LinkRefresher::RefreshFlags

protected

Various flags about properties of the last examined link that might have an influence on the next one.

Enumerator
USE_NEXT	There was a conditional jump. Try to use the given next order when looking for a new one.
HAS_CARGO	Consist could leave the last stop where it could interact with cargo carrying cargo (i.e. not an "unload all" + "no loading" order).
WAS_REFIT	Consist was refit since the last stop where it could interact with cargo.
RESET_REFIT	Consist had a chance to load since the last refit and the refit capacities can be reset.
IN_AUTOREFIT	Currently doing an autorefit loop. Ignore the first autorefit order.

Definition at line 28 of file refresh.h.

Constructor & Destructor Documentation

LinkRefresher()

LinkRefresher::LinkRefresher ( Vehicle *  vehicle, HopSet *  seen_hops, bool  allow_merge, bool  is_full_loading  )

protected

Constructor for link refreshing algorithm.

Parameters

vehicle	Vehicle to refresh links for.
seen_hops	Set of hops already seen. This is shared between this refresher and all its children.
allow_merge	If the refresher is allowed to merge or extend link graphs.
is_full_loading	If the vehicle is full loading.

Definition at line 69 of file refresh.cpp.

Member Function Documentation

HandleRefit()

bool LinkRefresher::HandleRefit ( CargoID  refit_cargo )

protected

Handle refit orders by updating capacities and refit_capacities.

Parameters

refit_cargo

Cargo to refit to.

Returns

True if any vehicle was refit; false if none was.

Definition at line 90 of file refresh.cpp.

References cargo, Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_engine_pool >::Get(), GetBestFittingSubType(), HasBit(), Vehicle::Next(), refit_capacities, and vehicle.

PredictNextOrder()

const Order * LinkRefresher::PredictNextOrder ( const Order *  cur, const Order *  next, uint8_t  flags, uint  num_hops = 0  )

protected

Predict the next order the vehicle will execute and resolve conditionals by recursion and return next non-conditional order in list.

Parameters

cur	Current order being evaluated.
next	Next order to be evaluated.
flags	RefreshFlags to give hints about the previous link and state carried over from that.
num_hops	Number of hops already taken by recursive calls to this method.

Returns

new next Order.

Definition at line 163 of file refresh.cpp.

References HasBit(), Order::IsType(), and USE_NEXT.

RefreshLinks()

void LinkRefresher::RefreshLinks ( const Order *  cur, const Order *  next, uint8_t  flags, uint  num_hops = 0  )

protected

Iterate over orders starting at cur and next and refresh links associated with them.

cur and next can be equal. If they're not they must be "neighbours" in their order list, which means next must be directly reachable from cur without passing any further OT_GOTO_STATION or OT_IMPLICIT orders in between.

Parameters

cur	Current order being evaluated.
next	Next order to be checked.
flags	RefreshFlags to give hints about the previous link and state carried over from that.
num_hops	Number of hops already taken by recursive calls to this method.

Definition at line 265 of file refresh.cpp.

References Order::IsType().

Referenced by Run().

RefreshStats()

void LinkRefresher::RefreshStats ( const Order *  cur, const Order *  next  )

protected

Refresh link stats for the given pair of orders.

Parameters

cur	Last stop where the consist could interact with cargo.
next	Next order to be processed.

Definition at line 201 of file refresh.cpp.

References Order::GetDestination(), and SpecializedStation< Station, false >::GetIfValid().

Run()

void LinkRefresher::Run ( Vehicle *  v, bool  allow_merge = true, bool  is_full_loading = false  )

static

Refresh all links the given vehicle will visit.

Parameters

v	Vehicle to refresh links for.
allow_merge	If the refresher is allowed to merge or extend link graphs.
is_full_loading	If the vehicle is full loading.

Definition at line 26 of file refresh.cpp.

References allow_merge, BaseConsist::cur_implicit_order_index, OrderList::GetNextDecisionNode(), Vehicle::GetOrder(), is_full_loading, Vehicle::last_loading_station, Vehicle::orders, RefreshLinks(), and seen_hops.

---

The documentation for this class was generated from the following files:

• src/linkgraph/refresh.h
• src/linkgraph/refresh.cpp