Animals spawning issue on version 1.20.2

[Stabrinai]

Expected behavior

Observed/Actual behavior

Steps/models to reproduce

use folia ver 1.20.2
join server
wait

Plugin and Datapack List

Folia version

This server is running Folia version git-Folia-"757cb09" (MC: 1.20.2) (Implementing API version 1.20.2-R0.1-SNAPSHOT) (Git: 757cb09 on dev/1.20.2)
Error obtaining version information

Other

bukkit.yml

settings:
  allow-end: true
  warn-on-overload: true
  permissions-file: permissions.yml
  update-folder: update
  plugin-profiling: false
  connection-throttle: 4000
  query-plugins: true
  deprecated-verbose: default
  shutdown-message: Server closed
  minimum-api: none
  use-map-color-cache: true
spawn-limits:
  monsters: 35
  animals: 5
  water-animals: 5
  water-ambient: 10
  water-underground-creature: 5
  axolotls: 5
  ambient: 5
chunk-gc:
  period-in-ticks: 600
ticks-per:
  animal-spawns: 400
  monster-spawns: 1
  water-spawns: 400
  water-ambient-spawns: 400
  water-underground-creature-spawns: 400
  axolotl-spawns: 400
  ambient-spawns: 400
  autosave: 6000
aliases: now-in-commands.yml

[andreypfau]

Same issue

[MineSunshineone]

same

[DxrkCxt]

same

[EterNityCH]

@DxrkCat @MineSunshineone @andreypfau Please refrain from spamming the issue page if you do not have any additional materials to add.

[andreypfau]

Any updates?

[Stabrinai]

This patch can limit the spawning of animals. You can try it:

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Sattera <wujiaxin752@icloud.com>
Date: Sat, 11 Nov 2023 22:20:46 +0800
Subject: [PATCH] Try fixing animals spawning issue


diff --git a/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java b/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
index 58609a0911c4e32b6f80f050cd3d23f70ad75b1b..d47488cc34eda43dd37ebf32802dabe92f1a1984 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
@@ -406,11 +406,11 @@ public final class NoiseBasedChunkGenerator extends ChunkGenerator {
     public void spawnOriginalMobs(WorldGenRegion region) {
         if (!((NoiseGeneratorSettings) this.settings.value()).disableMobGeneration()) {
             ChunkPos chunkcoordintpair = region.getCenter();
-            Holder<Biome> holder = region.getBiome(chunkcoordintpair.getWorldPosition().atY(region.getMaxBuildHeight() - 1));
+            // Holder<Biome> holder = region.getBiome(chunkcoordintpair.getWorldPosition().atY(region.getMaxBuildHeight() - 1));
             WorldgenRandom seededrandom = new WorldgenRandom(new LegacyRandomSource(RandomSupport.generateUniqueSeed()));
 
             seededrandom.setDecorationSeed(region.getSeed(), chunkcoordintpair.getMinBlockX(), chunkcoordintpair.getMinBlockZ());
-            NaturalSpawner.spawnMobsForChunkGeneration(region, holder, chunkcoordintpair, seededrandom);
+            // NaturalSpawner.spawnMobsForChunkGeneration(region, holder, chunkcoordintpair, seededrandom);
         }
     }
 }

before:

after:

[Goro922]

This patch can limit the spawning of animals. You can try it:

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Sattera <wujiaxin752@icloud.com>
Date: Sat, 11 Nov 2023 22:20:46 +0800
Subject: [PATCH] Try fixing animals spawning issue


diff --git a/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java b/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
index 58609a0911c4e32b6f80f050cd3d23f70ad75b1b..d47488cc34eda43dd37ebf32802dabe92f1a1984 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
@@ -406,11 +406,11 @@ public final class NoiseBasedChunkGenerator extends ChunkGenerator {
     public void spawnOriginalMobs(WorldGenRegion region) {
         if (!((NoiseGeneratorSettings) this.settings.value()).disableMobGeneration()) {
             ChunkPos chunkcoordintpair = region.getCenter();
-            Holder<Biome> holder = region.getBiome(chunkcoordintpair.getWorldPosition().atY(region.getMaxBuildHeight() - 1));
+            // Holder<Biome> holder = region.getBiome(chunkcoordintpair.getWorldPosition().atY(region.getMaxBuildHeight() - 1));
             WorldgenRandom seededrandom = new WorldgenRandom(new LegacyRandomSource(RandomSupport.generateUniqueSeed()));
 
             seededrandom.setDecorationSeed(region.getSeed(), chunkcoordintpair.getMinBlockX(), chunkcoordintpair.getMinBlockZ());
-            NaturalSpawner.spawnMobsForChunkGeneration(region, holder, chunkcoordintpair, seededrandom);
+            // NaturalSpawner.spawnMobsForChunkGeneration(region, holder, chunkcoordintpair, seededrandom);
         }
     }
 }

before: after:

nope, still have the same issue

[Spottedleaf]

Can't produce this locally at all.

Please make sure that when you run git pull to build newer versions of folia that you also run gradlew applypatches, as this looks exactly like a bug that was fixed during the 1.20.2 update

[cgw2023]

i can confirm that this problem is still not resolved after the 7aacf90 . I compiled the latest folia jar by cloning the dev/1.20.2 branch after 7aacf90 , still , mobs alot

[Goro922]

[Spottedleaf]

Can you provide your entire config set? spigot, bukkit, and the paper global and paper world configs?