Unigine::Signal Class

#include <UnigineSignal.h>

class MyClass1
{
public:
	MyClass1() {}
	virtual ~MyClass1() {}

	// first callback function to be fired in case the signal is invoked
	int MySignalCallback1() {
		// do some actions
		Log::message("REPORT: MySignalCallback1() is called!");

		return 1;
	}
};
	
// second callback function to be fired in case the signal is invoked
int MySignalCallback2() {
	// do some actions (e.g. play a sound)
	Log::message("REPORT: MySignalCallback2() is called!");
	return 1;
}

// declaring an instance of the MyClass1
MyClass1 MyClass1Instance;

class MyClass2
{
public:
	Signal my_signal;	// Signal declaration

	int init() 
	{
		// subscribing MyClass1Instance for the signal by adding a callback
		my_signal.add(MakeCallback(&MyClass1Instance, &MyClass1::MySignalCallback1));
		
		// subscribing for the signal by adding another callback and saving its ID to unsubscribe later
		void *cb2_id = my_signal.add(MakeCallback(MySignalCallback2));
		
		//...
		
		// whenever you want, execute the event (at this moment both callbacks will be fired)
		my_signal.invoke();
		
		// cancelling a subscription by removing a callback via ID
		my_signal.remove(cb2_id);

		return 0;

	}
	int shutdown(){
		// execute the event on shutdown (at this moment only the MyClass1::MySignalCallback1() callbacks will be fired, as the second one is no longer subscribed)
		my_signal.invoke();
	}
};