Door open after destroying all the enemies.

Another question here. I have been looking for a solution for something like when i kill the enemies in a level, a door will open or something like that will be triggered. Not much discussion went through the community about this topic except i found just one. Here is the glimpse what was tried…

//Add the number of enemies already in the Level
static var enemyCount : int = 0;

function Update ()
{

if(enemyCount < 1)
{
    //Instantiate prize and open door
    print("Ok Now Open The Door!");    
}
if(enemyCount > 0)
{
    print("The Enemy Count is" + "" + enemyCount); 
}

}

I was wondering if anybody can help on it or already have a better way to do it. Even any link that is describing this matter is also appreciated as well.

Thank you.

Beware about putting stuff such as “Instantiate prize” within an Update loop; in your example, enemies count will continue to be < 1 until you add more enemies, or load a new scene. Until then, you’re instantiating prize every frame.

Instead, try this approach:

public int numberOfEnemies;
private bool needsPrize = false;

void Update()
{
   if (numberOfEnemies > 0)
   {
     //print your number of enemies on screen
   }
   else
   {
     needsPrize = true;
     print("You win bla");
   }

   //then, simply check:
   if (needsPrize)
   {
     //Instantiate prize

     //Don't forget this:
     needsPrize = false;
   }
}