Fix #12118: When adding an unbunching order, properly check for unsafe conditions (#12136)

src/vehicle.cpp

@@ -2426,6 +2426,30 @@ void Vehicle::HandleLoading(bool mode)
 	this->IncrementImplicitOrderIndex();
 }
 
+/**
+ * Check if the current vehicle has a full load order.
+ * @return true Iff this vehicle has a full load order.
+ */
+bool Vehicle::HasFullLoadOrder() const
+{
+	for (Order *o : this->Orders()) {
+		if (o->IsType(OT_GOTO_STATION) && o->GetLoadType() & (OLFB_FULL_LOAD | OLF_FULL_LOAD_ANY)) return true;
+	}
+	return false;
+}
+
+/**
+ * Check if the current vehicle has a conditional order.
+ * @return true Iff this vehicle has a conditional order.
+ */
+bool Vehicle::HasConditionalOrder() const
+{
+	for (Order *o : this->Orders()) {
+		if (o->IsType(OT_CONDITIONAL)) return true;
+	}
+	return false;
+}
+
 /**
  * Check if the current vehicle has an unbunching order.
  * @return true Iff this vehicle has an unbunching order.