From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martijn Muijsers <martijnmuijsers@live.nl>
Date: Thu, 1 Dec 2022 14:18:46 +0100
Subject: [PATCH] Cache world generator sea level

Removed since 1.21.4 hardfork, as the cache captured the wrong value and caused LeavesMC/Leaves#392.
Also this opt has been disabled by default in Lithium since 08/12/2022 due to the early access of registry crash.

License: LGPL-3.0 (https://www.gnu.org/licenses/lgpl-3.0.html)
Gale - https://galemc.org

This patch is based on the following mixin:
"net/caffeinemc/mods/lithium/mixin/gen/cached_generator_settings/NoiseBasedChunkGeneratorMixin.java"
By: SuperCoder7979 <k.pranav@gmail.com>
As part of: Lithium (https://github.com/CaffeineMC/lithium-fabric)
Licensed under: LGPL-3.0 (https://www.gnu.org/licenses/lgpl-3.0.html)

diff --git a/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java b/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
index 65728ef17e63d71833677fdcbd5bb90794b4822b..de0f33fd008d8cd08b6da9ab37e98bd7f51ce0ca 100644
--- a/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
+++ b/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
@@ -57,11 +57,19 @@ public final class NoiseBasedChunkGenerator extends ChunkGenerator {
     private static final BlockState AIR = Blocks.AIR.defaultBlockState();
     public final Holder<NoiseGeneratorSettings> settings;
     private final Supplier<Aquifer.FluidPicker> globalFluidPicker;
+    private int cachedSeaLevel; // Gale - Lithium - cache world generator sea level
 
     public NoiseBasedChunkGenerator(BiomeSource biomeSource, Holder<NoiseGeneratorSettings> settings) {
         super(biomeSource);
         this.settings = settings;
-        this.globalFluidPicker = Suppliers.memoize(() -> createFluidPicker(settings.value()));
+        // Gale start - Lithium - cache world generator sea level
+        this.globalFluidPicker = Suppliers.memoize(() -> {
+            var fluidPicker = createFluidPicker(settings.value());
+            this.cachedSeaLevel = settings.value().seaLevel();
+            return fluidPicker;
+
+        });
+        // Gale end - Lithium - cache world generator sea level
     }
 
     private static Aquifer.FluidPicker createFluidPicker(NoiseGeneratorSettings settings) {
@@ -407,7 +415,7 @@ public final class NoiseBasedChunkGenerator extends ChunkGenerator {
 
     @Override
     public int getSeaLevel() {
-        return this.settings.value().seaLevel();
+        return this.cachedSeaLevel; // Gale - Lithium - cache world generator sea level
     }
 
     @Override