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@ -2058,6 +2058,7 @@ void Vehicle::LeaveStation()
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/* Refresh next hop stats to make sure we've done that at least once
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* during the stop and that refit_cap == cargo_cap for each vehicle in
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* the consist. */
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this->ResetRefitCaps();
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this->RefreshNextHopsStats();
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/* if the vehicle could load here or could stop with cargo loaded set the last loading station */
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@ -2087,65 +2088,74 @@ void Vehicle::LeaveStation()
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}
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}
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/**
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* Reset all refit_cap in the consist to cargo_cap.
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*/
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void Vehicle::ResetRefitCaps()
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{
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for (Vehicle *v = this; v != NULL; v = v->Next()) v->refit_cap = v->cargo_cap;
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}
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/**
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* Simulated cargo type and capacity for prediction of future links.
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*/
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struct RefitDesc {
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CargoID cargo; ///< Cargo type the vehicle will be carrying.
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uint16 capacity; ///< Capacity the vehicle will have.
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uint16 remaining; ///< Capacity remaining from before the previous refit.
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RefitDesc(CargoID cargo, uint16 capacity, uint16 remaining) :
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cargo(cargo), capacity(capacity), remaining(remaining) {}
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};
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typedef std::list<RefitDesc> RefitList;
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typedef std::map<CargoID, uint> CapacitiesMap;
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/**
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* Predict a vehicle's course from its current state and refresh all links it
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* will visit. As a side effect reset the refit_cap of all vehicles in the
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* consist to the cargo_cap. This method is expected to be called when loading
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* at a station so it's safe to do so.
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* will visit.
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*/
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void Vehicle::RefreshNextHopsStats()
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{
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/* Assemble list of capacities and set last loading stations to 0. */
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SmallMap<CargoID, uint, 1> capacities;
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CapacitiesMap capacities;
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RefitList refit_capacities;
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for (Vehicle *v = this; v != NULL; v = v->Next()) {
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v->refit_cap = v->cargo_cap;
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if (v->refit_cap == 0) continue;
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SmallPair<CargoID, uint> *i = capacities.Find(v->cargo_type);
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if (i == capacities.End()) {
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/* Braindead smallmap not providing a good method for that...
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* capacities[v->cargo_type] += v->cargo_cap won't do as that just
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* allocates the memory, but doesn't initialize it if the key isn't
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* there, yet. So we still have to check if the key exists and that
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* is best done with Find(). */
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i = capacities.Append();
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i->first = v->cargo_type;
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i->second = v->refit_cap;
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} else {
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i->second += v->refit_cap;
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}
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refit_capacities.push_back(RefitDesc(v->cargo_type, v->cargo_cap, v->refit_cap));
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if (v->refit_cap > 0) capacities[v->cargo_type] += v->refit_cap;
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}
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/* If orders were deleted while loading, we're done here.*/
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if (this->orders.list == NULL) return;
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uint hops = 0;
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const Order *first = this->GetOrder(this->cur_implicit_order_index);
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do {
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/* Make sure the first order is a station order. */
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first = this->orders.list->GetNextStoppingOrder(this, first, hops++);
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if (first == NULL) return;
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} while (!first->IsType(OT_GOTO_STATION) && !first->IsType(OT_IMPLICIT));
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hops = 0;
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/* Make sure the first order is a station order. */
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first = this->orders.list->GetNextStoppingOrder(this, first, 0);
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if (first == NULL) return;
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const Order *cur = first;
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const Order *next = first;
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while (next != NULL && cur->CanLeaveWithCargo(true)) {
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next = this->orders.list->GetNextStoppingOrder(this,
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this->orders.list->GetNext(next), ++hops);
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if (next == NULL) break;
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bool has_cargo = this->last_loading_station != INVALID_STATION;
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bool was_refit = false;
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uint hops = 0;
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while (next != NULL) {
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/* If the refit cargo is CT_AUTO_REFIT, we're optimistic and assume the
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* cargo will stay the same. The point of this method is to avoid
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* deadlocks due to vehicles waiting for cargo that isn't being routed,
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* yet. That situation will not occur if the vehicle is actually
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* carrying a different cargo in the end. */
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if (next->IsAutoRefit() && next->GetRefitCargo() != CT_AUTO_REFIT) {
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/* Handle refit by dropping some vehicles. */
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if (next->IsRefit() && !next->IsAutoRefit()) {
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was_refit = true;
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CargoID new_cid = next->GetRefitCargo();
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RefitList::iterator refit_it = refit_capacities.begin();
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for (Vehicle *v = this; v != NULL; v = v->Next()) {
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const Engine *e = Engine::Get(v->engine_type);
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if (!HasBit(e->info.refit_mask, new_cid)) continue;
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if (!HasBit(e->info.refit_mask, new_cid)) {
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++refit_it;
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continue;
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}
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/* Back up the vehicle's cargo type */
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CargoID temp_cid = v->cargo_type;
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@ -2161,41 +2171,80 @@ void Vehicle::RefreshNextHopsStats()
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v->cargo_subtype = temp_subtype;
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/* Skip on next refit. */
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if (new_cid != v->cargo_type && v->refit_cap > 0) {
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capacities[v->cargo_type] -= v->refit_cap;
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v->refit_cap = 0;
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} else if (amount < v->refit_cap) {
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capacities[v->cargo_type] -= v->refit_cap - amount;
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v->refit_cap = amount;
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if (new_cid != refit_it->cargo && refit_it->remaining > 0) {
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capacities[refit_it->cargo] -= refit_it->remaining;
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refit_it->remaining = 0;
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} else if (amount < refit_it->remaining) {
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capacities[refit_it->cargo] -= refit_it->remaining - amount;
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refit_it->remaining = amount;
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}
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refit_it->capacity = amount;
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refit_it->cargo = new_cid;
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++refit_it;
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/* Special case for aircraft with mail. */
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if (v->type == VEH_AIRCRAFT) {
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Vehicle *u = v->Next();
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if (mail_capacity < u->refit_cap) {
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capacities[u->cargo_type] -= u->refit_cap - mail_capacity;
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u->refit_cap = mail_capacity;
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if (mail_capacity < refit_it->remaining) {
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capacities[refit_it->cargo] -= refit_it->remaining - mail_capacity;
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refit_it->remaining = mail_capacity;
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}
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refit_it->capacity = mail_capacity;
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break; // aircraft have only one vehicle
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}
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}
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}
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/* Only reset the refit capacities if the "previous" next is a station,
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* meaning that either the vehicle was refit at the previous station or
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* it wasn't at all refit during the current hop. */
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bool reset_refit = was_refit && (next->IsType(OT_GOTO_STATION) || next->IsType(OT_IMPLICIT));
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/* Reassign next with the following stop. This can be a station or a
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* depot. Allow the order list to be walked twice so that we can
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* reassign "first" below without afterwards terminating early here. */
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next = this->orders.list->GetNextStoppingOrder(this,
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this->orders.list->GetNext(next), hops++ / 2);
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if (next == NULL) break;
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if (next->IsType(OT_GOTO_STATION) || next->IsType(OT_IMPLICIT)) {
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StationID next_station = next->GetDestination();
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Station *st = Station::GetIfValid(cur->GetDestination());
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if (st != NULL && next_station != INVALID_STATION && next_station != st->index) {
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for (const SmallPair<CargoID, uint> *i = capacities.Begin(); i != capacities.End(); ++i) {
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/* Refresh the link and give it a minimum capacity. */
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if (i->second > 0) IncreaseStats(st, i->first, next_station, i->second, UINT_MAX);
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if (reset_refit) {
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/* Restore remaining capacities as vehicle might have been able to load now. */
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for (RefitList::iterator it(refit_capacities.begin()); it != refit_capacities.end(); ++it) {
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if (it->remaining == it->capacity) continue;
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capacities[it->cargo] += it->capacity - it->remaining;
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it->remaining = it->capacity;
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}
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reset_refit = false;
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was_refit = false;
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}
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if (cur->IsType(OT_GOTO_STATION) || cur->IsType(OT_IMPLICIT)) {
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has_cargo = cur->CanLeaveWithCargo(has_cargo);
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if (has_cargo) {
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StationID next_station = next->GetDestination();
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Station *st = Station::GetIfValid(cur->GetDestination());
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if (st != NULL && next_station != INVALID_STATION && next_station != st->index) {
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for (CapacitiesMap::const_iterator i = capacities.begin(); i != capacities.end(); ++i) {
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/* Refresh the link and give it a minimum capacity. */
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if (i->second > 0) IncreaseStats(st, i->first, next_station, i->second, UINT_MAX);
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}
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}
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}
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}
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/* "cur" is only assigned here if the stop is a station so that
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* whenever stats are to be increased two stations can be found.
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* However, "first" can be a depot stop. If that is the case
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* reassign it to make sure we end up with a station for the last
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* link. */
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cur = next;
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if (cur == first) break;
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if (!first->IsType(OT_GOTO_STATION) && !first->IsType(OT_IMPLICIT)) {
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first = cur;
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}
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}
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}
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for (Vehicle *v = this; v != NULL; v = v->Next()) v->refit_cap = v->cargo_cap;
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}
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/**
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