this was achieved by storing binary representations of the blockstates, rather than the original BlockStateData.
Due to the insane object:data ratio of Tag objects (40:1 for ByteTag for example), modestly sized NBT can explode in memory footprint. This has been previously seen with the absurd 25 MB footprint on file load.
Previously, I attempted to mitigate this by deduplicating tag objects, but this was mitigating a symptom rather than addressing the cause.
We don't actually need to keep the NBT around in memory, since we don't actually use it for anything other than matching blockstates. In this case, we can allow the code to be possibly a little slower, since the lookup is anyway slow and the result will be cached.
In fact, using encoded ordered states as hash keys significantly improves the speed of lookups for stuff like walls, which have many thousands of states.
We keep around generateStateData(), since it's still possible we may need the BlockStateData associated, and it can be easily reconstructed from the binary-encoded representation in BlockStateDictionaryEntry.
since this is contextless (there's no way to know the version of the client requesting the MOTD), we can safely assume that this is not going to vary between protocol versions.
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 particular optimisation became possible thanks to changes in 4.19.
I observed that the allocation of Event objects and calling ->call() was costing us a significant percentage of the time taken in PlayerAuthInputPacket handlers. This change produces a measurable 2 microsecond reduction in overhead for PlayerAuthInputPacket handling when players are not moving (10.7 -> 8.7 microseconds). On a server with 200 players, this translates into a 1% reduction in CPU load for PlayerAuthInputPacket alone. It will also benefit other packets, but not to the extent that PlayerAuthInputPacket benefits.
closes#5670
I'm not super happy with this fix, since it can still be broken if StandardPacketBroadcaster is replaced by something else. However, fixing that problem is probably going to require internal BC breaks, which are not suitable for a patch release.
due to implementation quirks + some unforeseen ways these actions can behave, there can be as many as 53 actions in a single crafting request. This is an edge case, but it has to be catered for.
for some reason book edits generate a transaction in addition to BookEditPacket. PM has never used the transaction, and it doesn't pass anyway because CreateItemAction can't be used in survival mode.
However, since the strict validation introduced since ItemStackRequest, this dud transaction now causes the player to get kicked without these changes.
