feat: implement getCreatorModId/Namespace

Author: klikli-dev

common/src/main/java/com/klikli_dev/modonomicon/platform/services/PlatformHelper.java

@@ -6,6 +6,11 @@
 
 package com.klikli_dev.modonomicon.platform.services;
 
+import com.klikli_dev.modonomicon.item.ModonomiconItem;
+import net.minecraft.world.item.Item;
+
+import java.util.function.Function;
+
 public interface PlatformHelper {
 
     /**
@@ -42,6 +47,16 @@ default String getEnvironmentName() {
 
     PhysicalSide getPhysicalSide();
 
+    /**
+     * Creates a ModonomiconItem for the given properties.
+     * On NeoForge, this returns an item that implements IItemExtension#getCreatorModId.
+     * On Fabric, this returns an item that implements FabricItem#getCreatorNamespace.
+     *
+     * @param properties the item properties
+     * @return a new ModonomiconItem instance
+     */
+    ModonomiconItem createModonomiconItem(Item.Properties properties);
+
     enum PhysicalSide {
         CLIENT,
         DEDICATED_SERVER

common/src/main/java/com/klikli_dev/modonomicon/registry/ItemRegistry.java

@@ -7,22 +7,19 @@
 package com.klikli_dev.modonomicon.registry;
 
 import com.klikli_dev.modonomicon.Modonomicon;
-import com.klikli_dev.modonomicon.item.ModonomiconItem;
+import com.klikli_dev.modonomicon.platform.Services;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.Identifier;
-import net.minecraft.world.item.BlockItem;
 import net.minecraft.world.item.Item;
-import net.minecraft.world.level.block.Block;
 
 import java.util.function.Function;
-import java.util.function.Supplier;
 
 public class ItemRegistry {
     public static final RegistrationProvider<Item> ITEMS = RegistrationProvider.get(Registries.ITEM, Modonomicon.MOD_ID);
 
     public static final RegistryObject<Item> MODONOMICON =
-            register("modonomicon", (properties) -> new ModonomiconItem(properties.stacksTo(1)));
+            register("modonomicon", (properties) -> Services.PLATFORM.createModonomiconItem(properties.stacksTo(1)));
 
     //Dummy items for default models
     public static final RegistryObject<Item> MODONOMICON_BLUE =

fabric/src/main/java/com/klikli_dev/modonomicon/item/FabricModonomiconItem.java

@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2026 klikli-dev
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+package com.klikli_dev.modonomicon.item;
+
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+
+public class FabricModonomiconItem extends ModonomiconItem {
+    public FabricModonomiconItem(Item.Properties properties) {
+        super(properties);
+    }
+
+    @Override
+    public String getCreatorNamespace(ItemStack stack) {
+        var bookId = getBookId(stack);
+        if (bookId != null) {
+            return bookId.getNamespace();
+        }
+        return super.getCreatorNamespace(stack);
+    }
+}

fabric/src/main/java/com/klikli_dev/modonomicon/platform/FabricPlatformHelper.java

@@ -6,9 +6,12 @@
 
 package com.klikli_dev.modonomicon.platform;
 
+import com.klikli_dev.modonomicon.item.FabricModonomiconItem;
+import com.klikli_dev.modonomicon.item.ModonomiconItem;
 import com.klikli_dev.modonomicon.platform.services.PlatformHelper;
 import net.fabricmc.api.EnvType;
 import net.fabricmc.loader.api.FabricLoader;
+import net.minecraft.world.item.Item;
 
 public class FabricPlatformHelper implements PlatformHelper {
 
@@ -31,4 +34,9 @@ public boolean isDevelopmentEnvironment() {
     public PhysicalSide getPhysicalSide() {
         return FabricLoader.getInstance().getEnvironmentType() == EnvType.CLIENT ? PhysicalSide.CLIENT : PhysicalSide.DEDICATED_SERVER;
     }
+
+    @Override
+    public ModonomiconItem createModonomiconItem(Item.Properties properties) {
+        return new FabricModonomiconItem(properties);
+    }
 }

forge/src/main/java/com/klikli_dev/modonomicon/platform/ForgePlatformHelper.java

@@ -6,7 +6,9 @@
 
 package com.klikli_dev.modonomicon.platform;
 
+import com.klikli_dev.modonomicon.item.ModonomiconItem;
 import com.klikli_dev.modonomicon.platform.services.PlatformHelper;
+import net.minecraft.world.item.Item;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.fml.ModList;
 import net.minecraftforge.fml.loading.FMLEnvironment;
@@ -33,4 +35,9 @@ public boolean isDevelopmentEnvironment() {
     public PhysicalSide getPhysicalSide() {
         return FMLEnvironment.dist == Dist.CLIENT ? PhysicalSide.CLIENT : PhysicalSide.DEDICATED_SERVER;
     }
+
+    @Override
+    public ModonomiconItem createModonomiconItem(Item.Properties properties) {
+        return new ModonomiconItem(properties);
+    }
 }

neo/src/main/java/com/klikli_dev/modonomicon/item/NeoModonomiconItem.java

@@ -0,0 +1,27 @@
+/*
+ * SPDX-FileCopyrightText: 2026 klikli-dev
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+package com.klikli_dev.modonomicon.item;
+
+import net.minecraft.core.HolderLookup;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import org.jetbrains.annotations.Nullable;
+
+public class NeoModonomiconItem extends ModonomiconItem {
+    public NeoModonomiconItem(Properties properties) {
+        super(properties);
+    }
+
+    @Nullable
+    public String getCreatorModId(HolderLookup.Provider registries, ItemStack itemStack) {
+        var bookId = getBookId(itemStack);
+        if (bookId != null) {
+            return bookId.getNamespace();
+        }
+        return null;
+    }
+}

neo/src/main/java/com/klikli_dev/modonomicon/platform/NeoPlatformHelper.java

@@ -6,7 +6,10 @@
 
 package com.klikli_dev.modonomicon.platform;
 
+import com.klikli_dev.modonomicon.item.ModonomiconItem;
+import com.klikli_dev.modonomicon.item.NeoModonomiconItem;
 import com.klikli_dev.modonomicon.platform.services.PlatformHelper;
+import net.minecraft.world.item.Item;
 import net.neoforged.api.distmarker.Dist;
 import net.neoforged.fml.ModList;
 import net.neoforged.fml.loading.FMLEnvironment;
@@ -33,4 +36,9 @@ public boolean isDevelopmentEnvironment() {
     public PhysicalSide getPhysicalSide() {
         return FMLEnvironment.getDist() == Dist.CLIENT ? PhysicalSide.CLIENT : PhysicalSide.DEDICATED_SERVER;
     }
+
+    @Override
+    public ModonomiconItem createModonomiconItem(Item.Properties properties) {
+        return new NeoModonomiconItem(properties);
+    }
 }