Merge remote-tracking branch 'upstream/master' into 13.0

src/vehicle.cpp

@@ -2988,3 +2988,65 @@ void GetVehicleSet(VehicleSet &set, Vehicle *v, uint8 num_vehicles)
 		}
 	}
 }
+
+/**
+ * Calculates the maximum weight of the ground vehicle when loaded.
+ * @return Weight in tonnes
+ */
+uint32 Vehicle::GetDisplayMaxWeight() const
+{
+	uint32 max_weight = 0;
+
+	for (const Vehicle* u = this; u != nullptr; u = u->Next()) {
+		max_weight += u->GetMaxWeight();
+	}
+
+	return max_weight;
+}
+
+/**
+ * Calculates the minimum power-to-weight ratio using the maximum weight of the ground vehicle
+ * @return power-to-weight ratio in 10ths of hp(I) per tonne
+ */
+uint32 Vehicle::GetDisplayMinPowerToWeight() const
+{
+	uint32 max_weight = GetDisplayMaxWeight();
+	if (max_weight == 0) return 0;
+	return GetGroundVehicleCache()->cached_power * 10u / max_weight;
+}
+
+/**
+ * Checks if two vehicle chains have the same list of engines.
+ * @param v1 First vehicle chain.
+ * @param v1 Second vehicle chain.
+ * @return True if same, false if different.
+ */
+bool VehiclesHaveSameEngineList(const Vehicle *v1, const Vehicle *v2)
+{
+	while (true) {
+		if (v1 == nullptr && v2 == nullptr) return true;
+		if (v1 == nullptr || v2 == nullptr) return false;
+		if (v1->GetEngine() != v2->GetEngine()) return false;
+		v1 = v1->GetNextVehicle();
+		v2 = v2->GetNextVehicle();
+	}
+}
+
+/**
+ * Checks if two vehicles have the same list of orders.
+ * @param v1 First vehicles.
+ * @param v1 Second vehicles.
+ * @return True if same, false if different.
+ */
+bool VehiclesHaveSameOrderList(const Vehicle *v1, const Vehicle *v2)
+{
+	const Order *o1 = v1->GetFirstOrder();
+	const Order *o2 = v2->GetFirstOrder();
+	while (true) {
+		if (o1 == nullptr && o2 == nullptr) return true;
+		if (o1 == nullptr || o2 == nullptr) return false;
+		if (!o1->Equals(*o2)) return false;
+		o1 = o1->next;
+		o2 = o2->next;
+	}
+}