From 0ae2319ddc00850129825fb91ef4ce7a93411e08 Mon Sep 17 00:00:00 2001
From: DBotThePony <dbotthepony@yandex.ru>
Date: Mon, 10 Mar 2025 19:02:02 +0700
Subject: [PATCH] Replace getBlockRandomPos implementation

---
 .../dbotthepony/mc/prng/mixin/LevelMixin.java  | 18 ++++++++++++++++++
 src/main/resources/better_random.mixins.json   |  3 ++-
 2 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/ru/dbotthepony/mc/prng/mixin/LevelMixin.java

diff --git a/src/main/java/ru/dbotthepony/mc/prng/mixin/LevelMixin.java b/src/main/java/ru/dbotthepony/mc/prng/mixin/LevelMixin.java
new file mode 100644
index 0000000..cde9e47
--- /dev/null
+++ b/src/main/java/ru/dbotthepony/mc/prng/mixin/LevelMixin.java
@@ -0,0 +1,18 @@
+package ru.dbotthepony.mc.prng.mixin;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.level.Level;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+
+@Mixin(Level.class)
+public abstract class LevelMixin {
+	@Overwrite
+	public BlockPos getBlockRandomPos(int x, int y, int z, int yMask) {
+		long value = ((Level) (Object) this).random.nextLong();
+		int selectX = (int) (value & 15);
+		int selectZ = (int) ((value >>> 8) & 15);
+		int selectY = (int) ((value >>> 16) & yMask);
+		return new BlockPos(selectX + x, selectY + y, selectZ + z);
+	}
+}
diff --git a/src/main/resources/better_random.mixins.json b/src/main/resources/better_random.mixins.json
index 2b0a98c..af5f6a9 100644
--- a/src/main/resources/better_random.mixins.json
+++ b/src/main/resources/better_random.mixins.json
@@ -5,7 +5,8 @@
   "compatibilityLevel": "JAVA_21",
   "minVersion": "0.8",
   "mixins": [
-    "RandomSourceMixin"
+    "RandomSourceMixin",
+    "LevelMixin"
   ],
   "client": []
 }