Fast BiomeManager seed obfuscation

leaf-server/src/main/java/org/dreeam/leaf/config/modules/opt/FastBiomeManagerSeedObfuscation.java

@@ -0,0 +1,34 @@
+package org.dreeam.leaf.config.modules.opt;
+
+import org.dreeam.leaf.config.ConfigModules;
+import org.dreeam.leaf.config.EnumConfigCategory;
+import org.dreeam.leaf.config.annotations.Experimental;
+
+import java.util.concurrent.ThreadLocalRandom;
+
+public class FastBiomeManagerSeedObfuscation extends ConfigModules {
+
+    public String getBasePath() {
+        return EnumConfigCategory.PERF.getBaseKeyName() + ".fast-biome-manager-seed-obfuscation";
+    }
+
+    @Experimental
+    public static boolean enabled = false;
+    public static long seedObfuscationKey = ThreadLocalRandom.current().nextLong();
+
+    @Override
+    public void onLoaded() {
+        enabled = config.getBoolean(getBasePath() + ".enabled", enabled,
+            config.pickStringRegionBased(
+                """
+                    **EXPERMIENTAL FEATURE**
+                    Replace vanilla SHA-256 seed obfuscation in BiomeManager with XXHash.""",
+                """
+                    **实验性功能**
+                    将原版 BiomeManager 的 SHA-256 种子混淆换成 XXHash."""));
+        seedObfuscationKey = config.getLong(getBasePath() + ".seed-obfuscation-key", seedObfuscationKey,
+            config.pickStringRegionBased(
+                "Seed obfuscation key for XXHash.",
+                "XXHash 的混淆种子."));
+    }
+}