This resolves some issues which caused entities to not be resent correctly.
Entities that are interacted with need to be resent to the client, so we resend all the entity
data to the player whilst making sure not to clear dirty entries from the tracker. This makes
sure that values will be correctly updated to other players.
This also adds utilities to aid in further preventing entity desyncs.
This also also fixes the bug causing cancelling PlayerInteractEvent to cause items to continue
to be used despite being cancelled on the server.
For example, items being consumed but never finishing, shields being put up, etc.
The underlying issue of this is that the client modifies their synced data values,
and so we have to (forcibly) resend them in order for the client to reset their using item state.
See: https://github.com/PaperMC/Paper/pull/1896
== AT ==
public net.minecraft.server.level.ChunkMap$TrackedEntity serverEntity
Players are able to use alt accounts and enderpearls to travel
long distances utilizing the pearls in unloaded chunks and loading
the chunk later when convenient.
This disables that by not saving the thrower when the chunk is unloaded.
This is mainly useful for survival servers that do not allow freeform teleporting.
Note: Currently removed as enderpearls are ticked as long as their owner is online in 1.21.2.
Might be worth to re-add once an option to disable the above vanilla mechanic is added, to
fully prevent enderpearl travel exploits.
== AT ==
public net.minecraft.world.entity.projectile.Projectile ownerUUID
When enabled, ender pearls will not load chunks and will save to the world instead of the player.
== AT ==
public net.minecraft.world.entity.projectile.Projectile cachedOwner
In general, the client now has an acknowledgment system which will prevent block changes made by the client to be reverted correctly.
It should be noted that this system does not yet support block entities, so those still need to resynced when needed.
Instead of just tracking the itemstacks, this tracks with it, the
action to take with that itemstack to apply the correct logic
on dropping the item instead of generalizing it for all dropped
items like CB does.
Fixes EntityPotionEffectEvent
Fixes EntityPoseChangeEvent
Asynchronous chunk generation provides an opportunity for things
to happen async that previously fired synchronous-only events. This
patch is for mitigating those issues by various methods.
Also fixes correctly marking/clearing the entity generation flag.
This patch sets the generation flag anytime an entity is created
via StructureTemplate before loading from NBT to catch uses of
the flag during the loading logic. This patch clears the generation
flag from an entity when added to a ServerLevel for the situation
where generation happened directly to a ServerLevel and the
entity still has the flag set.
== AT ==
public net.minecraft.world.level.storage.DimensionDataStorage readSavedData(Ljava/util/function/Function;Lnet/minecraft/util/datafix/DataFixTypes;Ljava/lang/String;)Lnet/minecraft/world/level/saveddata/SavedData;
