Function VerifyAutoreplaceRefitForOrders

src/autoreplace_cmd.cpp:182–197

* Tests whether refit orders that applied to v will also apply to the new vehicle type * @param v The vehicle to be replaced * @param engine_type The type we want to replace with * @return true iff all refit orders stay valid */

 * @return true iff all refit orders stay valid
 */
static bool VerifyAutoreplaceRefitForOrders(const Vehicle *v, EngineID engine_type)
{
	CargoTypes union_refit_mask_a = GetUnionOfArticulatedRefitMasks(v->engine_type, false);
	CargoTypes union_refit_mask_b = GetUnionOfArticulatedRefitMasks(engine_type, false);

	const Vehicle *u = (v->type == VEH_TRAIN) ? v->First() : v;
	for (const Order &o : u->Orders()) {
		if (!o.IsRefit() || o.IsAutoRefit()) continue;
		CargoType cargo_type = o.GetRefitCargo();

		if (!HasBit(union_refit_mask_a, cargo_type)) continue;
		if (!HasBit(union_refit_mask_b, cargo_type)) return false;
	}

	return true;
}

/**
 * Gets the index of the first refit order that is incompatible with the requested engine type