Hi Andrew Do you have some examples on how to make mulitple copies o

Hi Kjeld, Do you mean multiple independent instances? <div class="highlight hi

Right, instead of: <div class="highlight highlight-source-c++ notranslate position

Nice that works. Thanks <div class="snippet-clipboard-content notranslate position

Multiple copies of same HFSM2 machine about hfsm2 HOT 6 CLOSED

DonMathi commented on August 25, 2024

Multiple copies of same HFSM2 machine

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Comments (6)

andrew-gresyk commented on August 25, 2024

Hi Kjeld,
Do you mean multiple independent instances?

	FSM::Instance machine1;
	FSM::Instance machine2;

should work, or are you having any specific issues with multiple copies?

Regards,
Andrew

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DonMathi commented on August 25, 2024

My challenge was that would like to "hide" the definition of context and structure of the state machine inside a class. I was not able to scope the definition right, to do so.

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DonMathi commented on August 25, 2024

So for now I left it outside, and the created instances of the context and machine inside

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DonMathi commented on August 25, 2024

My colleague suggested to make a namespace, and wrap the definition inside that.
I found a link that mention that I can make a nameless namespace.

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andrew-gresyk commented on August 25, 2024

Right, instead of:

#define S(s) struct s

using FSM = M::PeerRoot<
                S(Off),                                // initial top-level state
                M::Composite<S(On),                    // sub-machine region with a head state (On) and and 3 sub-states
                    S(Red),                            // initial sub-state of the region
                    S(Yellow),
                    S(Green)
                >,
                S(Done)
            >;

#undef S

try forward declaring the states without a macro, e.g.:

struct Off;
struct On;
struct Red;
struct Yellow;
struct Green;
struct Done;

using FSM = M::PeerRoot<
                Off,                                // initial top-level state
                M::Composite<On,                    // sub-machine region with a head state (On) and and 3 sub-states
                    Red,                            // initial sub-state of the region
                    Yellow,
                    Green
                >,
                Done
            >;

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DonMathi commented on August 25, 2024

Nice that works. Thanks

class TestingHFSM
{
	struct Context
	{
		int value;
	};
	using M = hfsm2::MachineT<hfsm2::Config::ContextT<Context>>;

	struct Begin;
	struct Running;
	struct Stopped;

	using HFSM = M::PeerRoot<
		Begin,
		Running,
		Stopped
	>;

	struct Begin : HFSM::State
	{
		using HFSM::State::react;
	};
	struct Running : HFSM::State
	{
		using HFSM::State::react;
	};
	struct Stopped : HFSM::State
	{
		using HFSM::State::react;
	};

};

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