Function IncreaseStats

src/station_cmd.cpp:4262–4306

* Increase capacity for a link stat given by station cargo and next hop. * @param st Station to get the link stats from. * @param cargo Cargo to increase stat for. * @param next_station_id Station the consist will be travelling to next. * @param capacity Capacity to add to link stat. * @param usage Usage to add to link stat. * @param mode Update mode to be applied. */

 * @param mode Update mode to be applied.
 */
void IncreaseStats(Station *st, CargoType cargo, StationID next_station_id, uint capacity, uint usage, uint32_t time, EdgeUpdateModes modes)
{
	GoodsEntry &ge1 = st->goods[cargo];
	Station *st2 = Station::Get(next_station_id);
	GoodsEntry &ge2 = st2->goods[cargo];
	LinkGraph *lg = nullptr;
	if (ge1.link_graph == LinkGraphID::Invalid()) {
		if (ge2.link_graph == LinkGraphID::Invalid()) {
			if (LinkGraph::CanAllocateItem()) {
				lg = new LinkGraph(cargo);
				LinkGraphSchedule::instance.Queue(lg);
				ge2.link_graph = lg->index;
				ge2.node = lg->AddNode(st2);
			} else {
				Debug(misc, 0, "Can't allocate link graph");
			}
		} else {
			lg = LinkGraph::Get(ge2.link_graph);
		}
		if (lg) {
			ge1.link_graph = lg->index;
			ge1.node = lg->AddNode(st);
		}
	} else if (ge2.link_graph == LinkGraphID::Invalid()) {
		lg = LinkGraph::Get(ge1.link_graph);
		ge2.link_graph = lg->index;
		ge2.node = lg->AddNode(st2);
	} else {
		lg = LinkGraph::Get(ge1.link_graph);
		if (ge1.link_graph != ge2.link_graph) {
			LinkGraph *lg2 = LinkGraph::Get(ge2.link_graph);
			if (lg->Size() < lg2->Size()) {
				LinkGraphSchedule::instance.Dequeue(lg);
				lg2->Merge(lg); // Updates GoodsEntries of lg
				lg = lg2;
			} else {
				LinkGraphSchedule::instance.Dequeue(lg2);
				lg->Merge(lg2); // Updates GoodsEntries of lg2
			}
		}
	}
	if (lg != nullptr) {
		(*lg)[ge1.node].UpdateEdge(ge2.node, capacity, usage, time, modes);
	}
}

/**
 * Increase capacity for all link stats associated with vehicles in the given consist.