Complete bootstrap milestone

src/main/java/net/dnorberg/rivencraft/Rivencraft.java

@@ -1,15 +1,10 @@
 package net.dnorberg.rivencraft;
 
 import com.mojang.logging.LogUtils;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.network.chat.Component;
-import net.minecraft.world.item.CreativeModeTab;
-import net.minecraft.world.item.Item;
+import net.dnorberg.rivencraft.registry.ModCreativeTabs;
+import net.dnorberg.rivencraft.registry.ModItems;
 import net.neoforged.bus.api.IEventBus;
 import net.neoforged.fml.common.Mod;
-import net.neoforged.neoforge.registries.DeferredHolder;
-import net.neoforged.neoforge.registries.DeferredItem;
-import net.neoforged.neoforge.registries.DeferredRegister;
 import org.slf4j.Logger;
 
 @Mod(Rivencraft.MOD_ID)
@@ -17,25 +12,9 @@ public final class Rivencraft {
     public static final String MOD_ID = "rivencraft";
     public static final Logger LOGGER = LogUtils.getLogger();
 
-    private static final DeferredRegister.Items ITEMS = DeferredRegister.createItems(MOD_ID);
-    private static final DeferredRegister<CreativeModeTab> CREATIVE_TABS =
-            DeferredRegister.create(Registries.CREATIVE_MODE_TAB, MOD_ID);
-
-    public static final DeferredItem<Item> DESCRIPTIVE_BOOK = ITEMS.registerSimpleItem(
-            "descriptive_book",
-            new Item.Properties().stacksTo(1)
-    );
-
-    public static final DeferredHolder<CreativeModeTab, CreativeModeTab> RIVENCRAFT_TAB =
-            CREATIVE_TABS.register("rivencraft", () -> CreativeModeTab.builder()
-                    .title(Component.translatable("itemGroup.rivencraft"))
-                    .icon(() -> DESCRIPTIVE_BOOK.get().getDefaultInstance())
-                    .displayItems((parameters, output) -> output.accept(DESCRIPTIVE_BOOK.get()))
-                    .build());
-
     public Rivencraft(IEventBus modEventBus) {
-        ITEMS.register(modEventBus);
-        CREATIVE_TABS.register(modEventBus);
+        ModItems.register(modEventBus);
+        ModCreativeTabs.register(modEventBus);
         LOGGER.info("Initializing Rivencraft");
     }
 }

src/main/java/net/dnorberg/rivencraft/item/DescriptiveBookItem.java

@@ -0,0 +1,32 @@
+package net.dnorberg.rivencraft.item;
+
+import java.util.List;
+import net.minecraft.ChatFormatting;
+import net.minecraft.network.chat.Component;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.TooltipFlag;
+
+/**
+ * A book that will eventually describe and link to a generated Age.
+ *
+ * <p>The bootstrap implementation deliberately has no interaction behavior.
+ * Binding and travel belong to the books-and-linking milestone, where their
+ * server-authoritative data model can be introduced together.</p>
+ */
+public final class DescriptiveBookItem extends Item {
+    public DescriptiveBookItem(Properties properties) {
+        super(properties);
+    }
+
+    @Override
+    public void appendHoverText(
+            ItemStack stack,
+            TooltipContext context,
+            List<Component> tooltipComponents,
+            TooltipFlag tooltipFlag
+    ) {
+        tooltipComponents.add(Component.translatable("item.rivencraft.descriptive_book.unwritten")
+                .withStyle(ChatFormatting.GRAY));
+    }
+}

src/main/java/net/dnorberg/rivencraft/registry/ModCreativeTabs.java

@@ -0,0 +1,28 @@
+package net.dnorberg.rivencraft.registry;
+
+import net.dnorberg.rivencraft.Rivencraft;
+import net.minecraft.core.registries.Registries;
+import net.minecraft.network.chat.Component;
+import net.minecraft.world.item.CreativeModeTab;
+import net.neoforged.bus.api.IEventBus;
+import net.neoforged.neoforge.registries.DeferredHolder;
+import net.neoforged.neoforge.registries.DeferredRegister;
+
+public final class ModCreativeTabs {
+    private static final DeferredRegister<CreativeModeTab> CREATIVE_TABS =
+            DeferredRegister.create(Registries.CREATIVE_MODE_TAB, Rivencraft.MOD_ID);
+
+    public static final DeferredHolder<CreativeModeTab, CreativeModeTab> RIVENCRAFT =
+            CREATIVE_TABS.register("rivencraft", () -> CreativeModeTab.builder()
+                    .title(Component.translatable("itemGroup.rivencraft"))
+                    .icon(() -> ModItems.DESCRIPTIVE_BOOK.get().getDefaultInstance())
+                    .displayItems((parameters, output) -> output.accept(ModItems.DESCRIPTIVE_BOOK.get()))
+                    .build());
+
+    private ModCreativeTabs() {
+    }
+
+    public static void register(IEventBus modEventBus) {
+        CREATIVE_TABS.register(modEventBus);
+    }
+}

src/main/java/net/dnorberg/rivencraft/registry/ModItems.java

@@ -0,0 +1,25 @@
+package net.dnorberg.rivencraft.registry;
+
+import net.dnorberg.rivencraft.Rivencraft;
+import net.dnorberg.rivencraft.item.DescriptiveBookItem;
+import net.minecraft.world.item.Item;
+import net.neoforged.bus.api.IEventBus;
+import net.neoforged.neoforge.registries.DeferredItem;
+import net.neoforged.neoforge.registries.DeferredRegister;
+
+public final class ModItems {
+    private static final DeferredRegister.Items ITEMS = DeferredRegister.createItems(Rivencraft.MOD_ID);
+
+    public static final DeferredItem<DescriptiveBookItem> DESCRIPTIVE_BOOK = ITEMS.registerItem(
+            "descriptive_book",
+            DescriptiveBookItem::new,
+            new Item.Properties().stacksTo(1)
+    );
+
+    private ModItems() {
+    }
+
+    public static void register(IEventBus modEventBus) {
+        ITEMS.register(modEventBus);
+    }
+}

src/main/resources/assets/rivencraft/lang/en_us.json

@@ -1,4 +1,5 @@
 {
   "item.rivencraft.descriptive_book": "Descriptive Book",
+  "item.rivencraft.descriptive_book.unwritten": "Unwritten",
   "itemGroup.rivencraft": "Rivencraft"
 }