13
0
geforkt von Mirrors/Paper
Paper/patches/server/0774-Player-Entity-Tracking-Events.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412)
Spigot still maintains some partial implementation of "tick skipping", a
practice in which the MinecraftServer.currentTick field is updated not
by an increment of one per actual tick, but instead set to
System.currentTimeMillis() / 50. This behaviour means that the tracked
tick may "skip" a tick value in case a previous tick took more than the
expected 50ms.

To compensate for this in important paths, spigot/craftbukkit
implements "wall-time". Instead of incrementing/decrementing ticks on
block entities/entities by one for each call to their tick() method,
they instead increment/decrement important values, like
an ItemEntity's age or pickupDelay, by the difference of
`currentTick - lastTick`, where `lastTick` is the value of
`currentTick` during the last tick() call.

These "fixes" however do not play nicely with minecraft's simulation
distance as entities/block entities implementing the above behaviour
would "catch up" their values when moving from a non-ticking chunk to a
ticking one as their `lastTick` value remains stuck on the last tick in
a ticking chunk and hence lead to a large "catch up" once ticked again.

Paper completely removes the "tick skipping" behaviour (See patch
"Further-improve-server-tick-loop"), making the above precautions
completely unnecessary, which also rids paper of the previous described
incompatibility with non-ticking chunks.
2024-09-19 16:36:07 +02:00

43 Zeilen
2.5 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Yannick Lamprecht <yannicklamprecht@live.de>
Date: Wed, 30 Mar 2022 18:16:52 +0200
Subject: [PATCH] Player Entity Tracking Events
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 61fda6927f060cdf8bcfddaaa08bbbe2c514c630..dca6087dc4e1c177c3dfdae01f140cf80c179803 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1533,7 +1533,11 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
// CraftBukkit end
if (flag) {
if (this.seenBy.add(player.connection)) {
+ // Paper start - entity tracking events
+ if (io.papermc.paper.event.player.PlayerTrackEntityEvent.getHandlerList().getRegisteredListeners().length == 0 || new io.papermc.paper.event.player.PlayerTrackEntityEvent(player.getBukkitEntity(), this.entity.getBukkitEntity()).callEvent()) {
this.serverEntity.addPairing(player);
+ }
+ // Paper end - entity tracking events
}
} else if (this.seenBy.remove(player.connection)) {
this.serverEntity.removePairing(player);
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 1aa3396a33e24f3849725769fe58b57374ee7611..3c7175b015262ed354d9a9ae237aff6d34cec713 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -3868,7 +3868,14 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
public void startSeenByPlayer(ServerPlayer player) {}
- public void stopSeenByPlayer(ServerPlayer player) {}
+ // Paper start - entity tracking events
+ public void stopSeenByPlayer(ServerPlayer player) {
+ // Since this event cannot be cancelled, we should call it here to catch all "un-tracks"
+ if (io.papermc.paper.event.player.PlayerUntrackEntityEvent.getHandlerList().getRegisteredListeners().length > 0) {
+ new io.papermc.paper.event.player.PlayerUntrackEntityEvent(player.getBukkitEntity(), this.getBukkitEntity()).callEvent();
+ }
+ }
+ // Paper end - entity tracking events
public float rotate(Rotation rotation) {
float f = Mth.wrapDegrees(this.getYRot());