Do you mean randomly spawning coins between pipes or making the player's coin amount go up when they collect the coins?
Just spawning them. My plan is to have coins in between the pipes, so the bird can collect them.
But as it's just a prototype right now, once the bird collides with the coin, the coin will destroy it's self.
I tried adding a coin in, but the top pipe spawned on the left side of the screen and the coin wouldn't scroll, it'd just stay stationary.