it seems like a simple thing, but I can't find any information on it whatsoever...

Basically, my intent is when the player mines stone - just regular stone, the stuff you go through millions of - there's a smaaaaaall  to drop one of my items instead (like 1/1000).

 

Dropping the item would be easy.

Thus far, though, I can't tap into the moment when the stone is mined.

 

I would go looking myself, but in 6 hours of scanning classes, I haven't yet found anything akin to what I need.

 

Thank you for any advice in advance

You want to use BlockEvent.HarvestDropsEvent, then check if the block is an instance of the block you want to drop your item, then if you don't want the block to drop its regular drops then clear the drops, then for the random chance just check if Random#nextInt(chance) equals whatever number, then add your new newdrop

Hmmmm yes. That second part I fully get. Could you maybe point me to a class or piece of code (github is fine) where a similar thing is already used? Just so I see it in context.

1) Look up how events work, there are some tutorials around

2)

if(Random.nextInt(1000) == 0) { drops.add(your itemstack); }

Okay... It'll take me a little while to get over how easy this was. Events are really powerful