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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-12-15 11:00:06 +01:00
Paper/patches/server/0559-Use-getChunkIfLoadedImmediately-in-places.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

54 Zeilen
3.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Mon, 8 Jul 2019 00:13:36 -0700
Subject: [PATCH] Use getChunkIfLoadedImmediately in places
This prevents us from hitting chunk loads for chunks at or less-than
ticket level 33 (yes getChunkIfLoaded will actually perform a chunk
load in that case).
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 055650b315d53b56798ded7af2054c3e8e3ee319..c72687fb23e8d01639cce7d79e3f97805d51e01f 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -231,7 +231,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
public boolean hasEntityMoveEvent; // Paper - Add EntityMoveEvent
public LevelChunk getChunkIfLoaded(int x, int z) {
- return this.chunkSource.getChunk(x, z, false);
+ return this.chunkSource.getChunkAtIfLoadedImmediately(x, z); // Paper - Use getChunkIfLoadedImmediately
}
@Override
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index 144d243e0d6ba3ae3f0b0bf457fa516e2b4f416f..20a14b4163807b806bf2ce5a88d3c35098bed929 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -180,6 +180,13 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
return (CraftServer) Bukkit.getServer();
}
+ // Paper start - Use getChunkIfLoadedImmediately
+ @Override
+ public boolean hasChunk(int chunkX, int chunkZ) {
+ return this.getChunkIfLoaded(chunkX, chunkZ) != null;
+ }
+ // Paper end - Use getChunkIfLoadedImmediately
+
public abstract ResourceKey<LevelStem> getTypeKey();
protected Level(WritableLevelData worlddatamutable, ResourceKey<Level> resourcekey, RegistryAccess iregistrycustom, Holder<DimensionType> holder, Supplier<ProfilerFiller> supplier, boolean flag, boolean flag1, long i, int j, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider, org.bukkit.World.Environment env, java.util.function.Function<org.spigotmc.SpigotWorldConfig, io.papermc.paper.configuration.WorldConfiguration> paperWorldConfigCreator) { // Paper - create paper world config
diff --git a/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java b/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
index 13b34e89bd3e55df1bb1d4d0cf013bafae43f502..df6c97be1b278c97a20390be5d3e60f429383702 100644
--- a/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
+++ b/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
@@ -56,7 +56,7 @@ public class GameEventDispatcher {
for (int l1 = j; l1 <= i1; ++l1) {
for (int i2 = l; i2 <= k1; ++i2) {
- LevelChunk chunk = this.level.getChunkSource().getChunkNow(l1, i2);
+ LevelChunk chunk = (LevelChunk) this.level.getChunkIfLoadedImmediately(l1, i2); // Paper - Use getChunkIfLoadedImmediately
if (chunk != null) {
for (int j2 = k; j2 <= j1; ++j2) {