state machine, parallel seems to work, final state and info about active atomic states

libs/main/state_machine/pistatemachine.h

@@ -39,11 +39,22 @@ public:
 	PIStateMachine(const PIString & n = {});
 
 	bool start();
+	bool isRunning() const { return is_running; }
+	void addOnFinish(std::function<void()> f) { on_finish = f; }
 
 	template<typename... Args>
 	bool postEvent(int event_id, Args... args) {
+		if (!is_running) return false;
+		need_finish = false;
+		PIScopeExitCall exit_call([this] {
+			if (need_finish) {
+				is_running = false;
+				if (on_finish) on_finish();
+			}
+		});
 		PIVector<PIStateBase *> active_states;
 		gatherActiveStates(active_states);
+		// piCout << "active" << active_states;
 		for (auto * s: active_states) {
 			for (auto * t: s->transitions) {
 				if (t->eventID != event_id) continue;
@@ -55,6 +66,12 @@ public:
 		}
 		return false;
 	}
+
+private:
+	void onFinish() override;
+
+	bool is_running = false, need_finish = false;
+	std::function<void()> on_finish;
 };