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Leaf/leaf-server/paper-patches/features/0047-Paper-PR-Throttle-failed-spawn-attempts.patch
2025-09-28 05:15:11 -04:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: froobynooby <froobynooby@froobworld.com>
Date: Wed, 17 Jul 2024 18:46:11 +0930
Subject: [PATCH] Paper PR: Throttle failed spawn attempts
Original license: GPLv3
Original project: https://github.com/PaperMC/Paper
Paper pull request: https://github.com/PaperMC/Paper/pull/11099
For example config in paper-world-defaults.yml
```
spawning-throttle:
failed-attempts-threshold: 1200
throttled-ticks-per-spawn:
ambient: 10 # default value in bukkit.yml tickers-per * 10
axolotls: 10
creature: 4000
monster: 10
underground_water_creature: 10
water_ambient: 10
water_creature: 10
```
This patch adds the option to use longer ticks-per-spawn for a given
mob type in chunks where spawn attempts are consecutively failing.
This behaviour is particularly useful on servers where players build
mob farms. Mob farm designs often require making surrounding chunks
spawnproof, which causes the server to waste CPU cycles trying to spawn mobs in
vain. Throttling spawn attempts in suspected spawnproof chunks improves
performance without noticeably advantaging or disadvantaging the mob farm.
diff --git a/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java b/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
index bd1f0ba488ff9f12de4b85c97617638592bab09c..5fc9ec3e564135013622f839e59ef5a0ddff6f71 100644
--- a/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
+++ b/src/main/java/io/papermc/paper/configuration/WorldConfiguration.java
@@ -184,6 +184,17 @@ public class WorldConfiguration extends ConfigurationPart {
@MergeMap
public Reference2IntMap<MobCategory> ticksPerSpawn = Util.make(new Reference2IntOpenHashMap<>(NaturalSpawner.SPAWNING_CATEGORIES.length), map -> Arrays.stream(NaturalSpawner.SPAWNING_CATEGORIES).forEach(mobCategory -> map.put(mobCategory, -1)));
+ // Paper PR start - throttle failed spawn attempts
+ public SpawningThrottle spawningThrottle;
+
+ public class SpawningThrottle extends ConfigurationPart {
+ public IntOr.Disabled failedAttemptsThreshold = IntOr.Disabled.DISABLED;
+
+ @MergeMap
+ public Reference2IntMap<MobCategory> throttledTicksPerSpawn = Util.make(new Reference2IntOpenHashMap<>(NaturalSpawner.SPAWNING_CATEGORIES.length), map -> Arrays.stream(NaturalSpawner.SPAWNING_CATEGORIES).forEach(mobCategory -> map.put(mobCategory, -1)));
+ }
+ // Paper PR end - throttle failed spawn attempts
+
@ConfigSerializable
public record DespawnRangePair(@Required DespawnRange hard, @Required DespawnRange soft) {
public static DespawnRangePair createDefault() {