This is also how PLC's in industrial automation work. In general, any large hard real-time system. Factories and assembly line automation has a system of st

This is also how PLC's in industrial automation work. In general, any large hard real-time system. Factories and assembly line automation has a system of state updating devices. They were initially programmed using Ladder Diagrams, then STX (Structured text) a Pascal like language and IL (Instruction List), Sequential function chart, or Function block diagram. These all use Common Elements (IEC 61131 standard) so, you can mix languages.