Paper/patches/server/0298-Only-count-Natural-Spawned-mobs-towards-natural-spaw.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 24 Mar 2019 01:01:32 -0400
Subject: [PATCH] Only count Natural Spawned mobs towards natural spawn mob
limit
This resolves the super common complaint about mobs not spawning.
This was ultimately a flaw in the vanilla count algorithim that allows
spawners and other misc mobs to count against the mob limit, which are
not bounded, and can prevent the entire world from spawning new.
I believe Bukkits changes around persistence may of actually made it
worse than vanilla.
This should fully solve all of the issues around it so that only natural
influences natural spawns.
diff --git a/src/main/java/net/minecraft/world/level/NaturalSpawner.java b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
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index 41eef8bfd1572aecaf086bfbec300abeae2df794..58ea6a1f95a09c22125a8262b1b221004ebce0e4 100644
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--- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
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@@ -83,6 +83,13 @@ public final class NaturalSpawner {
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MobCategory enumcreaturetype = entity.getType().getCategory();
if (enumcreaturetype != MobCategory.MISC) {
+ // Paper start - Only count natural spawns
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+ if (!entity.level().paperConfig().entities.spawning.countAllMobsForSpawning &&
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+ !(entity.spawnReason == org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.NATURAL ||
+ entity.spawnReason == org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.CHUNK_GEN)) {
+ continue;
+ }
+ // Paper end - Only count natural spawns
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BlockPos blockposition = entity.blockPosition();
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chunkSource.query(ChunkPos.asLong(blockposition), (chunk) -> {