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https://github.com/PaperMC/Paper.git
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2b9a7d9475
This restores monster aggression range back to normal when Activation Range is less than the monsters aggression range. This allows an entity to try to acquire targets still during inactive ticks, which will also then let it go into immunity stage.
232 lines
11 KiB
Diff
232 lines
11 KiB
Diff
From ed99479d1b81272b059aa5e8b102a4dae3a0ebb4 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 18 Jun 2016 23:22:12 -0400
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Subject: [PATCH] Delay Chunk Unloads based on Player Movement
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When players are moving in the world, doing things such as building or exploring,
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they will commonly go back and forth in a small area. This causes a ton of chunk load
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and unload activity on the edge chunks of their view distance.
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A simple back and forth movement in 6 blocks could spam a chunk to thrash a
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loading and unload cycle over and over again.
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This is very wasteful. This system introduces a delay of inactivity on a chunk
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before it actually unloads, which is maintained separately from ChunkGC.
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This allows servers with smaller worlds who do less long distance exploring to stop
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wasting cpu cycles on saving/unloading/reloading chunks repeatedly.
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This also makes the Chunk GC System useless, by auto scheduling unload as soon as
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a spare chunk is added to the server thats outside of view distance.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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index ff1a2046f6..0cd15c17e8 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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@@ -296,4 +296,18 @@ public class PaperWorldConfig {
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preventTntFromMovingInWater = getBoolean("prevent-tnt-from-moving-in-water", false);
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log("Prevent TNT from moving in water: " + preventTntFromMovingInWater);
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}
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+
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+ public long delayChunkUnloadsBy;
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+ private void delayChunkUnloadsBy() {
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+ delayChunkUnloadsBy = PaperConfig.getSeconds(getString("delay-chunk-unloads-by", "10s"));
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+ if (delayChunkUnloadsBy > 0) {
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+ log("Delaying chunk unloads by " + delayChunkUnloadsBy + " seconds");
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+ delayChunkUnloadsBy *= 1000;
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+ }
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+ }
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+
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+ public boolean skipEntityTickingInChunksScheduledForUnload = true;
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+ private void skipEntityTickingInChunksScheduledForUnload() {
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+ skipEntityTickingInChunksScheduledForUnload = getBoolean("skip-entity-ticking-in-chunks-scheduled-for-unload", skipEntityTickingInChunksScheduledForUnload);
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index 28ec8628dc..234c9eb1c3 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -36,6 +36,7 @@ public class Chunk implements IChunkAccess {
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private boolean i;public boolean isLoaded() { return i; } // Paper - OBFHELPER
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public final World world;
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public final Map<HeightMap.Type, HeightMap> heightMap;
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+ public Long scheduledForUnload; // Paper - delay chunk unloads
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public final int locX;
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public final int locZ;
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private boolean l;
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diff --git a/src/main/java/net/minecraft/server/ChunkMap.java b/src/main/java/net/minecraft/server/ChunkMap.java
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index 71ddaf591e..39ac032b0b 100644
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--- a/src/main/java/net/minecraft/server/ChunkMap.java
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+++ b/src/main/java/net/minecraft/server/ChunkMap.java
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@@ -48,6 +48,15 @@ public class ChunkMap extends Long2ObjectOpenHashMap<Chunk> {
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}
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}
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}
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+ // Paper start - if this is a spare chunk (not part of any players view distance), go ahead and queue it for unload.
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+ if (!((WorldServer)chunk.world).getPlayerChunkMap().isChunkInUse(chunk.locX, chunk.locZ)) {
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+ if (chunk.world.paperConfig.delayChunkUnloadsBy > 0) {
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+ chunk.scheduledForUnload = System.currentTimeMillis();
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+ } else {
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+ ((WorldServer) chunk.world).getChunkProviderServer().unload(chunk);
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+ }
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+ }
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+ // Paper end
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chunk.world.timings.syncChunkLoadPostTimer.stopTiming(); // Paper
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// CraftBukkit end
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diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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index 42d0731f0a..e32c9f9a62 100644
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--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
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+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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@@ -306,6 +306,19 @@ public class ChunkProviderServer implements IChunkProvider {
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}
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activityAccountant.endActivity(); // Spigot
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}
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+ // Paper start - delayed chunk unloads
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+ long now = System.currentTimeMillis();
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+ long unloadAfter = world.paperConfig.delayChunkUnloadsBy;
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+ if (unloadAfter > 0) {
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+ //noinspection Convert2streamapi
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+ for (Chunk chunk : chunks.values()) {
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+ if (chunk.scheduledForUnload != null && now - chunk.scheduledForUnload > unloadAfter) {
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+ chunk.scheduledForUnload = null;
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+ unload(chunk);
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+ }
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+ }
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+ }
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+ // Paper end
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this.chunkScheduler.a(booleansupplier);
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}
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diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
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index ac0e90eeca..2fd8fa30ee 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunk.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
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@@ -33,8 +33,22 @@ public class PlayerChunk {
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public void run() {
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loadInProgress = false;
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PlayerChunk.this.chunk = PlayerChunk.this.playerChunkMap.getWorld().getChunkProviderServer().getChunkAt(location.x, location.z, true, true);
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+ markChunkUsed(); // Paper - delay chunk unloads
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}
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};
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+ // Paper start - delay chunk unloads
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+ private void markChunkUsed() {
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+ if (chunk == null) {
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+ return;
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+ }
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+ if (chunkHasPlayers) {
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+ chunk.scheduledForUnload = null;
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+ } else if (chunk.scheduledForUnload == null) {
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+ chunk.scheduledForUnload = System.currentTimeMillis();
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+ }
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+ }
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+ private boolean chunkHasPlayers = false;
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+ // Paper end
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// CraftBukkit end
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public PlayerChunk(PlayerChunkMap playerchunkmap, int i, int j) {
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@@ -44,6 +58,7 @@ public class PlayerChunk {
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chunkproviderserver.a(i, j);
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this.chunk = chunkproviderserver.getChunkAt(i, j, true, false);
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+ markChunkUsed(); // Paper - delay chunk unloads
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}
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public ChunkCoordIntPair a() {
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@@ -56,6 +71,8 @@ public class PlayerChunk {
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} else {
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if (this.c.isEmpty()) {
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this.i = this.playerChunkMap.getWorld().getTime();
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+ chunkHasPlayers = true; // Paper - delay chunk unloads
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+ markChunkUsed(); // Paper - delay chunk unloads
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}
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this.c.add(entityplayer);
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@@ -74,6 +91,8 @@ public class PlayerChunk {
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this.c.remove(entityplayer);
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if (this.c.isEmpty()) {
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+ chunkHasPlayers = false; // Paper - delay chunk unloads
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+ markChunkUsed(); // Paper - delay chunk unloads
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this.playerChunkMap.b(this);
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}
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@@ -85,6 +104,7 @@ public class PlayerChunk {
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return true;
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} else {
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this.chunk = this.playerChunkMap.getWorld().getChunkProviderServer().getChunkAt(this.location.x, this.location.z, true, flag);
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+ markChunkUsed(); // Paper - delay chunk unloads
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return this.chunk != null;
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}
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}
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diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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index 1318ddd997..bc67565bf0 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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@@ -460,7 +460,13 @@ public class PlayerChunkMap {
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Chunk chunk = playerchunk.f();
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if (chunk != null) {
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- this.getWorld().getChunkProviderServer().unload(chunk);
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+ // Paper start - delay chunk unloads
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+ if (world.paperConfig.delayChunkUnloadsBy <= 0) {
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+ this.getWorld().getChunkProviderServer().unload(chunk);
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+ } else {
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+ chunk.scheduledForUnload = System.currentTimeMillis();
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+ }
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+ // Paper end
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}
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}
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 8aa4138a2e..225f7574d2 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -1342,7 +1342,13 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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if (!tileentity.x() && tileentity.hasWorld()) {
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BlockPosition blockposition = tileentity.getPosition();
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- if (this.isLoaded(blockposition) && this.K.a(blockposition)) {
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+ // Paper start - Skip ticking in chunks scheduled for unload
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+ net.minecraft.server.Chunk chunk = this.getChunkIfLoaded(blockposition);
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+ boolean shouldTick = chunk != null;
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+ if(this.paperConfig.skipEntityTickingInChunksScheduledForUnload)
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+ shouldTick = shouldTick && chunk.scheduledForUnload == null;
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+ if (shouldTick && this.K.a(blockposition)) {
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+ // Paper end
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try {
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this.methodProfiler.a(() -> {
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return String.valueOf(TileEntityTypes.a(tileentity.C()));
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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index 24e504c279..f0e974dffc 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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@@ -1757,7 +1757,7 @@ public class CraftWorld implements World {
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ChunkProviderServer cps = world.getChunkProviderServer();
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for (net.minecraft.server.Chunk chunk : cps.chunks.values()) {
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// If in use, skip it
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- if (isChunkInUse(chunk.locX, chunk.locZ)) {
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+ if (isChunkInUse(chunk.locX, chunk.locZ) || chunk.scheduledForUnload != null) { // Paper - delayed chunk unloads
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continue;
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}
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diff --git a/src/main/java/org/spigotmc/ActivationRange.java b/src/main/java/org/spigotmc/ActivationRange.java
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index d08ef3fe10..081789a8fe 100644
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--- a/src/main/java/org/spigotmc/ActivationRange.java
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+++ b/src/main/java/org/spigotmc/ActivationRange.java
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@@ -323,6 +323,11 @@ public class ActivationRange
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{
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isActive = false;
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}
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+ // Paper start - Skip ticking in chunks scheduled for unload
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+ else if (entity.world.paperConfig.skipEntityTickingInChunksScheduledForUnload && (chunk == null || chunk.scheduledForUnload != null)) {
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+ isActive = false;
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+ }
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+ // Paper end
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return isActive;
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}
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}
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--
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2.19.1
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