refactoring: application mode code split

combustionengine.h

@@ -0,0 +1,20 @@
+/*
+This Source Code Form is subject to the
+terms of the Mozilla Public License, v.
+2.0. If a copy of the MPL was not
+distributed with this file, You can
+obtain one at
+http://mozilla.org/MPL/2.0/.
+*/
+
+#pragma once
+
+// basic approximation of a fuel pump
+// TODO: fuel consumption, optional automatic engine start after activation
+struct fuel_pump {
+
+    bool is_enabled { false }; // device is allowed/requested to operate
+    bool is_active { false }; // device is working
+};
+
+//---------------------------------------------------------------------------