GameMonkeyScript/gmsrc/doc/tutorial/2-continuing/scripts/states_01.gm

global awake = function()
{
	print("I'm awake!");
};

global resting = function()
{
	print("I am resting");
	sig = block("wakeup");
	if (sig == "wakeup")
	{
		stateSet( awake );
	}
};

global init_state = function()
{
	// Set a state on the thread
	// we're now using states
	stateSet( resting );
};

thread( init_state );
sleep(1);
signal("wakeup");