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 API is much more flexible than the old, allowing any arbitrary set of chunks to be ticked.
These changes also improve the performance of random chunk ticking by almost entirely eliminating the cost of chunk selection. Ticking chunks are now reevaluated when a player moves, instead of every tick.
The system also does not attempt to check the same chunks twice, leading to further improvements.
Overall, the overhead of random chunk selection is reduced anywhere from 80-96%. In practice, this can offer a 5-10% performance gain for servers with sparsely distributed players.
This allows plugins to modify the entity via setters in EntitySpawnEvent without their changes getting overwritten by setter calls directly after the 'new YourEntity' statement.
As well as benefiting plugins, this also clears a path for a BC-breaking change in PM5 (to have the programmer use addEntity() to spawn entities, instead of the constructor doing it, which will improve on a number of data handling aspects).
fixes#4973
This targets next-minor because it has some side effects on plugins that depended on the old behaviour, such as VanillaHopper, so it's not suitable for a patch release.
Jury is out on whether they should be able to pick blocks at all, or be considered to have infinite resources, but this solution has been used in a few other places already anyway, so it can be cleaned up another time.
closes#4626
this does change the behaviour of getCurrentWindow() during InventoryCloseEvent, but no one should be using that anyway, since InventoryCloseEvent->getInventory() exists.
fixes#5021 and probably a bunch of other inventory related glitches
When the server initiates a window close, it does so by sending a ContainerClose to the client, which causes the
client to behave as if it initiated the close itself. It responds by sending a ContainerClose back to the server,
which the server is then expected to respond to.
Sending the client a new window before sending this final response creates buggy behaviour on the client, which
is problematic when switching windows. Therefore, we defer sending any new windows until after the client
responds to our window close instruction, so that we can complete the window handshake correctly.
This is a pile of complicated garbage that only exists because Mojang overengineered the process of opening and
closing inventory windows.
