Use a Popular Concept: FSM

• Finite State Machines

  • Transition from State to next State
  • Triggered by events
  • Execute actions during the transition
  • (SDL state machines are “at rest” while in states, do their job during transitions)

• Extended

  • Handle local variables
  • Use local variables to guard transitions

• Communicating

  • Respond to signals from other processes (signals = events)
  • Send signals to other processes

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