> Also, while we're on hacker news, is it known how the party hat duplication bug happened?
I don't know for sure but I understand a lot of early bug abuse was due to a failure to perform server side validation. So hypothetically you might enter into a 2 part trade transaction flow where you offer items for trade in the 1st step and then commit that transaction in the 2nd step. Server side validation might be done in the 1st step to make sure you actually own the item you declared an intent to trade, but none is done in the 2nd step. So you could declare an intent to trade a worthless item you possess, but modify the transaction commit packet to give away an item you don't possess.
I was not part of the bug abuse community but I did find one bug in the game that involved multiple actions being done in a single server tick. As I understand it there have been a lot of bugs like this over the years. As a hypothetical example, it might be impossible to teleport while holding a certain item, but if you picked up the item on the same tick as you performed the teleport, the server might process the two actions in such a way that it allowed you to perform both.
I don't know for sure but I understand a lot of early bug abuse was due to a failure to perform server side validation. So hypothetically you might enter into a 2 part trade transaction flow where you offer items for trade in the 1st step and then commit that transaction in the 2nd step. Server side validation might be done in the 1st step to make sure you actually own the item you declared an intent to trade, but none is done in the 2nd step. So you could declare an intent to trade a worthless item you possess, but modify the transaction commit packet to give away an item you don't possess.
I was not part of the bug abuse community but I did find one bug in the game that involved multiple actions being done in a single server tick. As I understand it there have been a lot of bugs like this over the years. As a hypothetical example, it might be impossible to teleport while holding a certain item, but if you picked up the item on the same tick as you performed the teleport, the server might process the two actions in such a way that it allowed you to perform both.