I dont see any indonesian people would programming like this but, heres is it! Yeah, i know that if you type more like 20 letters/numbers, it passing through the mask.
I was searching this type of typeable text usings sprites. mainly i searched the "You Can Think Pad" project for some inspiration and for some code. Next up, ill trying to make a settings for my fangame. so you will probably will not see that boring variable sliders.