I'm trying to put together a shop that allows the player to unlock new team members when they have enough currency: combination of coins and gems. If the player has enough coins and gems, then the player can select to unlock the new team member, and those coins and gems are subtracted from the total.
I couldn't get the subtraction to work at all. On top of that, I'm not sure whether it's better to use my own created sprite OR use the 'Buttons' function. Can 'Buttons' have their look/art changed?
And why is the most recent tutorial for 'in-game shop' from 2012? Any help would be appreciated.