due to direct repeated usage of registerEvent() with closures, we've seen some libraries like muqsit/SimplePacketHandler generate very large timings reports, because a new timings handler gets created every time a plugin registers or unregisters a new packet handler callback.
This change fixes the problem by ensuring that any handlers derived from the same function, handling the same event class, will share the same timer.
this allows saving about 4 MB of memory, because there are many blocks which have identical states, although they have different IDs.
this relies on a potentially risky assumption that the tags in knownStates won't be modified. If they are modified, the changes will influence all blockstates which share the tag.
However, I don't expect this to happen, and the 4 MB memory saving is substantial enough to be worth the risk.
closes#5724
this uses a (potentially bogus) assumption that the lowest mapped meta value associated with an ID is valid. I don't want to break this during a patch release, and this works for now.
In the future it would probably make more sense to bypass ItemTranslator entirely, and rely solely on the blockstate returned by RuntimeBlockMapping to fetch the correct ID. This is similar to how we serialize items for saving on disk in PM5.
this doesn't support editing the rear side of a sign, since the 1.12 format doesn't allow us to represent the rear text, and it would necessitate API breaks to support anyway.
However, we can quite trivially support APIs for the sign GUI, which plugins can use to enable editing signs. PocketMine-MP doesn't currently permit this, since it's currently an experimental feature in 1.20, but plugins can simply use Player->openSignEditor() to mimic it.
This is, however, a byproduct of the fact that APIs needed to be added in order to facilitate the use of OpenSignPacket in 1.19.80.
this uses the same dodgy hack used by CraftingTransaction, which assumes that getResultsFor() does not care about the crafting inputs.
While this is currently OK, since none of the currently-implemented recipes care about inputs anyway, it will become a problem when we implement shulker box recipes, so this needs to be addressed.
However, it can't be addressed without BC breaks, so this will have to be dealt with in PM5.
closes#5715
this is usually because of an uncaught exception interacting with a try...finally block.
This will normally result in a crash anyway, and we don't want to obscure the real error.
While event handlers should not throw exceptions, we need to make sure the timings get stopped in the correct order, because the parent Event timer will be stopped due to using a finally block.
If this happens while the handler timing is still running, a second exception will occur, obscuring the real error.
on multi version servers, the same packet may have different IDs, or different packets might use the same ID. In these cases, we don't want the timings to get split up or erroneously reused.
