register terra chunk generators alongside vanilla

platforms/fabric/src/main/java/com/dfsek/terra/fabric/FabricEntryPoint.java

@@ -29,6 +29,7 @@ import com.dfsek.terra.fabric.data.Codecs;
 import net.fabricmc.api.ModInitializer;
 import net.minecraft.server.command.ServerCommandSource;
 import net.minecraft.util.Identifier;
+import net.minecraft.util.registry.BuiltinRegistries;
 import net.minecraft.util.registry.Registry;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -47,9 +48,6 @@ public class FabricEntryPoint implements ModInitializer {
     @Override
     public void onInitialize() {
         logger.info("Initializing Terra Fabric mod...");
-        // register the things
-        Registry.register(Registry.CHUNK_GENERATOR, new Identifier("terra:terra"), Codecs.FABRIC_CHUNK_GENERATOR_WRAPPER);
-        Registry.register(Registry.BIOME_SOURCE, new Identifier("terra:terra"), Codecs.TERRA_BIOME_SOURCE);
     
         FabricServerCommandManager<CommandSender> manager = new FabricServerCommandManager<>(
                 CommandExecutionCoordinator.simpleCoordinator(),
@@ -57,8 +55,14 @@ public class FabricEntryPoint implements ModInitializer {
                 commandSender -> (ServerCommandSource) commandSender
         );
         
+        
         manager.brigadierManager().setNativeNumberSuggestions(false);
         
         TERRA_PLUGIN.getEventManager().callEvent(new CommandRegistrationEvent(manager));
     }
+    
+    public static void register() { // register the things
+        Registry.register(Registry.CHUNK_GENERATOR, new Identifier("terra:terra"), Codecs.FABRIC_CHUNK_GENERATOR_WRAPPER);
+        Registry.register(Registry.BIOME_SOURCE, new Identifier("terra:terra"), Codecs.TERRA_BIOME_SOURCE);
+    }
 }

platforms/fabric/src/main/java/com/dfsek/terra/fabric/mixin/lifecycle/ChunkGenerator_ChunkGeneratorRegistrationMixin.java

@@ -0,0 +1,19 @@
+package com.dfsek.terra.fabric.mixin.lifecycle;
+
+
+import com.dfsek.terra.fabric.FabricEntryPoint;
+
+import net.minecraft.world.gen.chunk.ChunkGenerator;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+
+@Mixin(ChunkGenerator.class)
+public class ChunkGenerator_ChunkGeneratorRegistrationMixin {
+    @Inject(method = "<clinit>", at = @At("RETURN"))
+    private static void registerTerraGenerators(CallbackInfo ci) {
+        FabricEntryPoint.register();
+    }
+}

platforms/fabric/src/main/resources/terra.mixins.json

@@ -32,8 +32,9 @@
         "implementations.inventory.meta.ItemStackMetaMixin",
         "implementations.world.ChunkRegionMixin",
         "implementations.world.ServerWorldMixin",
-    "lifecycle.MinecraftServerMixin",
+        "lifecycle.ChunkGenerator_ChunkGeneratorRegistrationMixin",
-      "lifecycle.MinecraftServer_BiomeRegistrationMixin"
+        "lifecycle.MinecraftServer_BiomeRegistrationMixin",
+        "lifecycle.MinecraftServerMixin"
     ],
     "client": [
         "access.GeneratorTypeAccessor",