task MainTask
{

while(GetTimer > 45)
	{
	DoStuff;
	....
	}

DeleteEnemyShotToItem(ALL);
Wait(60);

while(GetTimer > 30)
	{
	DoDifferentStuff;
	....
	}

DeleteEnemyShotToItem(ALL);
Wait(60);

loop
	{
	DoLastStuff;
	....
	}
}