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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 04:20:04 +01:00
Paper/patches/server/0413-Entity-isTicking.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

37 Zeilen
1.6 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Sat, 3 Oct 2020 21:39:16 -0500
Subject: [PATCH] Entity#isTicking
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index c01a9305eb1c3e2ee5effab1e11980c2540d3c2a..6ab665efcac4c2543bab9d95472026e0ec8580c5 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -4513,5 +4513,9 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
public static int nextEntityId() {
return ENTITY_COUNTER.incrementAndGet();
}
+
+ public boolean isTicking() {
+ return ((net.minecraft.server.level.ServerChunkCache) level.getChunkSource()).isPositionTicking(this);
+ }
// Paper end - Expose entity id counter
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index 5f5788a502642463091fb76e98703aaec7a86836..98e8ad81b8c9c0636abe59f70ce891fe926a37fe 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -1062,4 +1062,11 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
return getHandle().isInLava();
}
// Paper end - entity liquid API
+
+ // Paper start - isTicking API
+ @Override
+ public boolean isTicking() {
+ return getHandle().isTicking();
+ }
+ // Paper end - isTicking API
}