From 670c8949b651a1e677f88940aaeec4079fbd88e3 Mon Sep 17 00:00:00 2001
From: craisinlord <craisinlord@gmail.com>
Date: Tue, 23 Jun 2026 00:28:39 -0500
Subject: [PATCH] Added mixin to fix Alex's caves incompat with infinite
 dimensions corrupting player data

---
 .../infinity/ConfigGenInvocationMixin.java    | 37 +++++++++++++++++++
 .../resources/antarchy-neoforge.mixins.json   |  1 +
 2 files changed, 38 insertions(+)
 create mode 100644 neoforge/src/main/java/com/craisinlord/antarchy/neoforge/mixins/infinity/ConfigGenInvocationMixin.java

diff --git a/neoforge/src/main/java/com/craisinlord/antarchy/neoforge/mixins/infinity/ConfigGenInvocationMixin.java b/neoforge/src/main/java/com/craisinlord/antarchy/neoforge/mixins/infinity/ConfigGenInvocationMixin.java
new file mode 100644
index 00000000..3e00b4a2
--- /dev/null
+++ b/neoforge/src/main/java/com/craisinlord/antarchy/neoforge/mixins/infinity/ConfigGenInvocationMixin.java
@@ -0,0 +1,37 @@
+package com.craisinlord.antarchy.neoforge.mixins.infinity;
+
+import com.craisinlord.antarchy.Antarchy;
+import net.lerariemann.infinity.util.config.ConfigGenInvocation;
+import net.lerariemann.infinity.util.config.ConfigGenerator;
+import net.minecraft.server.MinecraftServer;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(value = ConfigGenInvocation.class, remap = false)
+/*
+ * Guards against a NPE in Infinite Dimensions' SurfaceRuleScanner when another mod
+ * registers a surface rule with a missing "biome_is" field. Without this, the crash
+ * propagates up through PlayerList.placeNewPlayer and kicks the player on login
+ */
+public class ConfigGenInvocationMixin {
+
+    @Redirect(
+            method = "run",
+            at = @At(
+                    value = "INVOKE",
+                    target = "Lnet/lerariemann/infinity/util/config/ConfigGenerator;generateAll(Lnet/minecraft/server/MinecraftServer;)V"
+            ),
+            remap = false
+    )
+    private void antarchy$safeGenerateAll(MinecraftServer server) {
+        try {
+            ConfigGenerator.generateAll(server);
+        } catch (Exception e) {
+            Antarchy.LOGGER.error(
+                    "[Antarchy] Infinite Dimensions surface rule scan crashed — likely a mod has a malformed surface rule (null 'biome_is' entry). Player login will continue.",
+                    e
+            );
+        }
+    }
+}
diff --git a/neoforge/src/main/resources/antarchy-neoforge.mixins.json b/neoforge/src/main/resources/antarchy-neoforge.mixins.json
index 14623a58..f84d3e8e 100644
--- a/neoforge/src/main/resources/antarchy-neoforge.mixins.json
+++ b/neoforge/src/main/resources/antarchy-neoforge.mixins.json
@@ -9,6 +9,7 @@
     "entity.MultipartEntityBridgeMixin",
     "entity.MultipartEntityLevelRegistryMixin",
     "entity.ParalyzedMobFreezeMixin",
+    "infinity.ConfigGenInvocationMixin",
     "infinity.PortalCreatorMixin",
     "infinity.RandomSpringMixin",
     "level.ClientLevelPartEntitiesAccessor",