From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: HaHaWTH <102713261+HaHaWTH@users.noreply.github.com>
Date: Tue, 9 Nov 2077 00:00:00 +0800
Subject: [PATCH] C2ME: Optimize world gen math

This patch is based on following mixins:
* "com/ishland/c2me/opts/math/mixin/MixinChunkPos.java"
* "com/ishland/c2me/opts/worldgen/vanilla/mixin/aquifer/MixinNoiseChunkGenerator.java"

As part of: C2ME-fabric (https://github.com/RelativityMC/C2ME-fabric)
Licensed under: MIT

Co-authored-by: Taiyou06 <kaandindar21@gmail.com>

diff --git a/src/main/java/net/minecraft/world/level/ChunkPos.java b/src/main/java/net/minecraft/world/level/ChunkPos.java
index fa58eeec2b652f0fa251eedf11cfabde5fd3198b..4976627098381f70b10c7370529bb5000bc5626f 100644
--- a/src/main/java/net/minecraft/world/level/ChunkPos.java
+++ b/src/main/java/net/minecraft/world/level/ChunkPos.java
@@ -84,7 +84,12 @@ public class ChunkPos {
 
     @Override
     public boolean equals(Object object) {
-        return this == object || object instanceof ChunkPos chunkPos && this.x == chunkPos.x && this.z == chunkPos.z;
+        // Leaf start - Use standard equals
+        if (object == this) return true;
+        if (object == null || object.getClass() != this.getClass()) return false;
+        ChunkPos thatPos = (ChunkPos) object;
+        return this.x == thatPos.x && this.z == thatPos.z;
+        // Leaf end - Use standard equals
     }
 
     public int getMiddleBlockX() {
diff --git a/src/main/java/net/minecraft/world/level/levelgen/Beardifier.java b/src/main/java/net/minecraft/world/level/levelgen/Beardifier.java
index ca93a97256350789ca56f910862c9d717ca7670b..3a1a5257e1a98cc1d520f407bb1f8c745cadd3df 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/Beardifier.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/Beardifier.java
@@ -132,8 +132,14 @@ public class Beardifier implements DensityFunctions.BeardifierOrMarker {
     }
 
     private static double getBuryContribution(double x, double y, double z) {
-        double d = Mth.length(x, y, z);
-        return Mth.clampedMap(d, 0.0, 6.0, 1.0, 0.0);
+        // Leaf start - Optimize method for beardifier
+        double d = Math.sqrt(x * x + y * y + z * z);
+        if (d > 6.0) {
+            return 0.0;
+        } else {
+            return 1.0 - d / 6.0;
+        }
+        // Leaf end - Optimize method for beardifier
     }
 
     private static double getBeardContribution(int x, int y, int z, int yy) {
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 c991da3d975e07f3e1e59d5b2e91ed629ea608e6..4a56c06fef4efbed9fa72cf11583f25854c5a9c2 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
@@ -76,14 +76,13 @@ public final class NoiseBasedChunkGenerator extends ChunkGenerator {
     }
 
     private static Aquifer.FluidPicker createFluidPicker(NoiseGeneratorSettings settings) {
+        // Leaf start - Optimize world gen
         Aquifer.FluidStatus aquifer_b = new Aquifer.FluidStatus(-54, Blocks.LAVA.defaultBlockState());
         int i = settings.seaLevel();
         Aquifer.FluidStatus aquifer_b1 = new Aquifer.FluidStatus(i, settings.defaultFluid());
-        Aquifer.FluidStatus aquifer_b2 = new Aquifer.FluidStatus(DimensionType.MIN_Y * 2, Blocks.AIR.defaultBlockState());
-
-        return (j, k, l) -> {
-            return k < Math.min(-54, i) ? aquifer_b : aquifer_b1;
-        };
+        final int min = Math.min(-54, i);
+        return (j, k, l) -> k < min ? aquifer_b : aquifer_b1;
+        // Leaf end - Optimize world gen
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/world/level/levelgen/synth/PerlinNoise.java b/src/main/java/net/minecraft/world/level/levelgen/synth/PerlinNoise.java
index 022dda9dded1bd96dcaf377b1d1a9711ea9c49e7..1b0c92f3c20a4edc85a976a0eec620d0a96b5bba 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/synth/PerlinNoise.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/synth/PerlinNoise.java
@@ -215,7 +215,9 @@ public class PerlinNoise {
     }
 
     public static double wrap(double value) {
-        return value - (double)Mth.lfloor(value / 3.3554432E7 + 0.5) * 3.3554432E7;
+        // Leaf start - Avoid casting
+        return value - Math.floor(value / 3.3554432E7 + 0.5) * 3.3554432E7;
+        // Leaf end - Avoid casting
     }
 
     protected int firstOctave() {