Added JEI Plugin

src/main/java/jackyy/simplesponge/integration/JEIPlugin.java

@@ -0,0 +1,55 @@
+package jackyy.simplesponge.integration;
+
+import jackyy.simplesponge.SimpleSponge;
+import jackyy.simplesponge.registry.ModItems;
+import mezz.jei.api.IModPlugin;
+import mezz.jei.api.JeiPlugin;
+import mezz.jei.api.constants.VanillaTypes;
+import mezz.jei.api.ingredients.subtypes.IIngredientSubtypeInterpreter;
+import mezz.jei.api.ingredients.subtypes.UidContext;
+import mezz.jei.api.registration.ISubtypeRegistration;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraftforge.common.capabilities.ForgeCapabilities;
+import net.minecraftforge.energy.IEnergyStorage;
+import net.minecraftforge.registries.RegistryObject;
+
+import java.util.Optional;
+
+@JeiPlugin
+public class JEIPlugin implements IModPlugin {
+
+    @Override
+    public ResourceLocation getPluginUid() {
+        return new ResourceLocation(SimpleSponge.MODID, "jei_plugin");
+    }
+
+    @Override
+    public void registerItemSubtypes(ISubtypeRegistration registration) {
+        for (RegistryObject<Item> item : ModItems.ITEMS.getEntries()) {
+            ItemStack stack = item.get().getDefaultInstance();
+            if (stack.getCapability(ForgeCapabilities.ENERGY).isPresent()) {
+                registration.registerSubtypeInterpreter(VanillaTypes.ITEM_STACK, item.get(), INTERPRETER);
+            }
+        }
+    }
+
+    private static final IIngredientSubtypeInterpreter<ItemStack> INTERPRETER = (stack, context) -> {
+        if (context == UidContext.Ingredient && stack.hasTag()) {
+            Optional<IEnergyStorage> capability = stack.getCapability(ForgeCapabilities.ENERGY).resolve();
+            if (capability.isPresent()) {
+                IEnergyStorage energyStorage = capability.get();
+                String subtype;
+                if (energyStorage.getEnergyStored() == energyStorage.getMaxEnergyStored()) {
+                    subtype = "filled";
+                } else {
+                    subtype = "empty";
+                }
+                return subtype;
+            }
+        }
+        return IIngredientSubtypeInterpreter.NONE;
+    };
+
+}

src/main/java/jackyy/simplesponge/registry/ModItems.java

@@ -12,7 +12,7 @@
 
 public class ModItems {
 
-    private static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, SimpleSponge.MODID);
+    public static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, SimpleSponge.MODID);
 
     public static final RegistryObject<Item> SPONGE_ON_A_STICK
             = ITEMS.register("sponge_on_a_stick", ItemSpongeOnAStick::new);