DuckfaceNinja Ah I see, so there's no way to do it without the array then? ): Dang, alright. Thanks for all your help!!
There's many way to do it actually, it just that I don't think any of other method is any easier, for example you can use instance variable and timer, but it's actually quite tricky and requires you to know much more. Well I'm mentioning array for the reason of it's usefulness in any situation. For me, array is the most robust functionality that let you to make almost anything, so learning array is much more future proof.