Refactor rune code

src/generated/resources/.cache/81865ef998211ff68340afa8e6cd0e1cf8ec012a

@@ -1,4 +1,4 @@
-// 1.20.1	2024-07-30T13:47:57.4562926	Item Models: ashes
+// 1.20.1	2024-08-02T01:31:53.2565269	Item Models: ashes
 63ec6c618a3a23eab4cab9c52d7d3250de9b516e assets/ashes/models/item/ashen_golem_spawn_egg.json
 060aa5df9f6e6c2d7476baa7c80b996a3c9fd4df assets/ashes/models/item/heated_ashy_ingot.json
-49ecc679012241ea5a31c76f6ffde9236c2a2ef5 assets/ashes/models/item/param_rune.json
+49ecc679012241ea5a31c76f6ffde9236c2a2ef5 assets/ashes/models/item/rune.json

src/main/java/info/shylie/ashes/Ashes.java

@@ -1,6 +1,7 @@
 package info.shylie.ashes;
 
 import com.mojang.logging.LogUtils;
+import info.shylie.ashes.api.tooltip.SingleItemTooltip;
 import info.shylie.ashes.datagen.ItemModels;
 import info.shylie.ashes.entity.AshenGolemEntity;
 import info.shylie.ashes.entity.render.AshenGolemRenderer;
@@ -9,6 +10,7 @@ import net.minecraft.data.PackOutput;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.client.event.EntityRenderersEvent;
+import net.minecraftforge.client.event.RegisterClientTooltipComponentFactoriesEvent;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.data.ExistingFileHelper;
 import net.minecraftforge.data.event.GatherDataEvent;
@@ -19,7 +21,6 @@ import net.minecraftforge.eventbus.api.SubscribeEvent;
 import net.minecraftforge.fml.ModLoadingContext;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.config.ModConfig;
-import net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent;
 import net.minecraftforge.fml.event.lifecycle.FMLCommonSetupEvent;
 import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext;
 import org.slf4j.Logger;
@@ -30,8 +31,7 @@ public class Ashes
     public static final String MODID = "ashes";
     public static final Logger LOGGER = LogUtils.getLogger();
 
-    public Ashes()
-    {
+    public Ashes() {
         IEventBus modEventBus = FMLJavaModLoadingContext.get().getModEventBus();
 
         modEventBus.addListener(this::commonSetup);
@@ -42,16 +42,14 @@ public class Ashes
         AshesRegistry.ITEMS.register(modEventBus);
         AshesRegistry.ENTITY_TYPES.register(modEventBus);
         AshesRegistry.CREATIVE_TABS.register(modEventBus);
-        AshesRegistry.TASK_RUNES.register(modEventBus);
-        AshesRegistry.PARAM_RUNES.register(modEventBus);
+        AshesRegistry.RUNES.register(modEventBus);
 
         MinecraftForge.EVENT_BUS.register(this);
 
         ModLoadingContext.get().registerConfig(ModConfig.Type.COMMON, Config.SPEC);
     }
 
-    private void commonSetup(final FMLCommonSetupEvent event)
-    {
+    private void commonSetup(final FMLCommonSetupEvent event) {
         LOGGER.info("From embers to ashes...");
     }
 
@@ -68,16 +66,15 @@ public class Ashes
     }
 
     @SubscribeEvent
-    public void onServerStarting(ServerStartingEvent event)
-    {
+    public void serverStarting(ServerStartingEvent event) {
     }
 
     @Mod.EventBusSubscriber(modid = MODID, bus = Mod.EventBusSubscriber.Bus.MOD, value = Dist.CLIENT)
     public static class ClientModEvents {
         @OnlyIn(Dist.CLIENT)
         @SubscribeEvent
-        public static void onClientSetup(FMLClientSetupEvent event)
-        {
+        public static void registerTooltipComponents(RegisterClientTooltipComponentFactoriesEvent event) {
+            event.register(SingleItemTooltip.class, SingleItemTooltip.SingleItemClientTooltip::new);
         }
 
         @OnlyIn(Dist.CLIENT)

src/main/java/info/shylie/ashes/AshesRegistry.java

@@ -2,11 +2,15 @@ package info.shylie.ashes;
 
 import com.rekindled.embers.RegistryManager;
 import com.rekindled.embers.util.Misc;
-import info.shylie.ashes.api.rune.IParamRune;
-import info.shylie.ashes.api.rune.ITaskRune;
+import info.shylie.ashes.api.rune.Rune;
+import info.shylie.ashes.api.rune.RuneType;
 import info.shylie.ashes.entity.AshenGolemEntity;
-import info.shylie.ashes.item.ParamRune;
+import info.shylie.ashes.item.RuneItem;
 import info.shylie.ashes.rune.param.BlockPosRune;
+import info.shylie.ashes.rune.param.ItemRune;
+import info.shylie.ashes.rune.task.MoveRune;
+import info.shylie.ashes.rune.task.SelectorRune;
+import info.shylie.ashes.rune.task.SequenceRune;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.network.chat.Component;
 import net.minecraft.resources.ResourceLocation;
@@ -28,30 +32,33 @@ public class AshesRegistry {
     public static final DeferredRegister<Block> BLOCKS = DeferredRegister.create(ForgeRegistries.BLOCKS, Ashes.MODID);
     public static final DeferredRegister<EntityType<?>> ENTITY_TYPES = DeferredRegister.create(ForgeRegistries.ENTITY_TYPES, Ashes.MODID);
     public static final DeferredRegister<CreativeModeTab> CREATIVE_TABS = DeferredRegister.create(Registries.CREATIVE_MODE_TAB, Ashes.MODID);
-    public static final DeferredRegister<ITaskRune> TASK_RUNES = DeferredRegister.create(new ResourceLocation(Ashes.MODID, "task_runes"), Ashes.MODID);
-    public static final DeferredRegister<IParamRune<?>> PARAM_RUNES = DeferredRegister.create(new ResourceLocation(Ashes.MODID, "param_runes"), Ashes.MODID);
+    public static final DeferredRegister<RuneType<? extends Rune>> RUNES = DeferredRegister.create(new ResourceLocation(Ashes.MODID, "rune"), Ashes.MODID);
 
-    public static final Supplier<IForgeRegistry<ITaskRune>> TASK_RUNES_REGISTRY = TASK_RUNES.makeRegistry(RegistryBuilder::new);
-    public static final Supplier<IForgeRegistry<IParamRune<?>>> PARAM_RUNES_REGISTRY = PARAM_RUNES.makeRegistry(RegistryBuilder::new);
+    public static final Supplier<IForgeRegistry<RuneType<?>>> RUNE_REGISTRY = RUNES.makeRegistry(RegistryBuilder::new);
 
     public static final RegistryObject<Item> HEATED_ASHY_INGOT;
-    public static final RegistryObject<ParamRune> PARAM_RUNE;
+    public static final RegistryObject<RuneItem> RUNE;
     public static final RegistryObject<ForgeSpawnEggItem> ASHEN_GOLEM_SPAWN_EGG;
 
     public static final RegistryObject<EntityType<AshenGolemEntity>> ASHEN_GOLEM;
 
     public static final RegistryObject<CreativeModeTab> ASHES_TAB;
 
-    public static final RegistryObject<BlockPosRune> BLOCK_POS_RUNE;
+    public static final RegistryObject<RuneType<BlockPosRune>> BLOCK_POS_RUNE;
+    public static final RegistryObject<RuneType<ItemRune>> ITEM_RUNE;
+
+    public static final RegistryObject<RuneType<SelectorRune>> SELECTOR_RUNE;
+    public static final RegistryObject<RuneType<SequenceRune>> SEQUENCE_RUNE;
+    public static final RegistryObject<RuneType<MoveRune>> MOVE_RUNE;
 
     static {
         HEATED_ASHY_INGOT = ITEMS.register(
                 "heated_ashy_ingot",
                 () -> new Item(new Item.Properties())
         );
-        PARAM_RUNE = ITEMS.register(
-                "param_rune",
-                () -> new ParamRune(new Item.Properties())
+        RUNE = ITEMS.register(
+                "rune",
+                () -> new RuneItem(new Item.Properties())
         );
 
         ASHEN_GOLEM = RegistryManager.registerEntity(
@@ -74,7 +81,12 @@ public class AshesRegistry {
                         }).build()
         );
 
-        BLOCK_POS_RUNE = PARAM_RUNES.register("block_pos_rune", BlockPosRune::new);
+        BLOCK_POS_RUNE = RUNES.register("blockpos", RuneType.Builder.of(BlockPosRune::new)::build);
+        ITEM_RUNE = RUNES.register("item", RuneType.Builder.of(ItemRune::new)::build);
+
+        SEQUENCE_RUNE = RUNES.register("sequence", RuneType.Builder.of(SequenceRune::new)::build);
+        SELECTOR_RUNE = RUNES.register("selector", RuneType.Builder.of(SelectorRune::new)::build);
+        MOVE_RUNE = RUNES.register("move", RuneType.Builder.of(MoveRune::new)::build);
     }
 
     public static RegistryObject<ForgeSpawnEggItem> registerSpawnEgg(RegistryObject<? extends EntityType<? extends Mob>> type, int bg, int fg) {

src/main/java/info/shylie/ashes/api/golem/IGolem.java

@@ -0,0 +1,19 @@
+package info.shylie.ashes.api.golem;
+
+import info.shylie.ashes.api.rune.TaskRune;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.world.entity.animal.AbstractGolem;
+
+public interface IGolem {
+    AbstractGolem asEntity();
+
+    TaskRune getTask();
+    void setTask(TaskRune task);
+
+    default void updateTask() {
+        TaskRune task = getTask();
+        if (task != null) {
+            task.update(this);
+        }
+    }
+}

src/main/java/info/shylie/ashes/api/rune/CompositeTaskRune.java

@@ -0,0 +1,76 @@
+package info.shylie.ashes.api.rune;
+
+import info.shylie.ashes.api.golem.IGolem;
+import net.minecraft.core.NonNullList;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.Tag;
+
+import java.util.function.Function;
+
+public abstract class CompositeTaskRune extends TaskRune {
+    public static final String CHILDREN_TAG = "children";
+
+    protected final NonNullList<TaskRune> children;
+
+    public CompositeTaskRune(RuneType<? extends CompositeTaskRune> type) {
+        super(type);
+        children = NonNullList.create();
+    }
+
+    public void add(TaskRune rune) {
+        if (rune == null) { return; }
+        children.add(rune);
+    }
+
+    public void remove(TaskRune rune) {
+        children.remove(rune);
+    }
+
+    public void remove(Function<TaskRune, Boolean> filter) {
+        children.removeIf(filter::apply);
+    }
+
+    @Override
+    protected boolean startImpl(IGolem golem) {
+        return !children.isEmpty();
+    }
+
+    @Override
+    protected final Status updateImpl(IGolem golem) {
+        for (TaskRune child : children) {
+            child.ran = false;
+        }
+
+        Status status = updateImpl2(golem);
+
+        for (TaskRune child : children) {
+            if (!child.ran) {
+                child.stop(golem);
+            }
+        }
+
+        return status;
+    }
+
+    protected abstract Status updateImpl2(IGolem golem);
+
+    @Override
+    protected final void saveImpl(CompoundTag tag) {
+        ListTag listTag = new ListTag();
+        for (TaskRune child : children) {
+            CompoundTag childTag = new CompoundTag();
+            child.save(childTag);
+            listTag.add(childTag);
+        }
+        tag.put(CHILDREN_TAG, listTag);
+    }
+
+    @Override
+    protected final void loadImpl(CompoundTag tag) {
+        ListTag list = tag.getList(CHILDREN_TAG, Tag.TAG_COMPOUND);
+        for (int i = 0; i < list.size(); i++) {
+            add(Rune.of(list.getCompound(i), TaskRune.class));
+        }
+    }
+}

src/main/java/info/shylie/ashes/api/rune/IParamRune.java

@@ -1,29 +0,0 @@
-package info.shylie.ashes.api.rune;
-
-import net.minecraft.world.InteractionHand;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.context.UseOnContext;
-import net.minecraft.world.level.Level;
-
-public interface IParamRune<T> extends IRune {
-    T getParameter(ItemStack stack);
-
-    default boolean setParameter(UseOnContext context) {
-        return false;
-    }
-
-    default boolean setParameter(UseContext context) {
-        return false;
-    }
-
-    default boolean setParameter(ItemStackedOnMeContext context) {
-        return false;
-    }
-
-    record UseContext(Level level, Player player, InteractionHand hand) {
-    }
-
-    record ItemStackedOnMeContext(ItemStack me, ItemStack other) {
-    }
-}

src/main/java/info/shylie/ashes/api/rune/IRune.java

@@ -1,7 +0,0 @@
-package info.shylie.ashes.api.rune;
-
-import net.minecraft.world.item.ItemStack;
-
-public interface IRune {
-    String getDescription(ItemStack stack);
-}

src/main/java/info/shylie/ashes/api/rune/ITaskRune.java

@@ -1,4 +0,0 @@
-package info.shylie.ashes.api.rune;
-
-public interface ITaskRune extends IRune {
-}

src/main/java/info/shylie/ashes/api/rune/LeafTaskRune.java

@@ -0,0 +1,54 @@
+package info.shylie.ashes.api.rune;
+
+import info.shylie.ashes.Ashes;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.Tag;
+
+public abstract class LeafTaskRune extends TaskRune {
+    public static final String PARAMETERS_TAG = "parameters";
+
+    private final Class<?>[] valid;
+    private final ParameterRune<?>[] parameters;
+
+    protected LeafTaskRune(RuneType<? extends LeafTaskRune> type, Class<?>... valid) {
+        super(type);
+        this.valid = valid;
+        parameters = new ParameterRune<?>[valid.length];
+    }
+
+    protected final <T> T getValue(int index) {
+        if (index < 0 || index >= parameters.length) { return null; }
+        if (parameters[index] == null) { return null; }
+        return (T)parameters[index].getValue();
+    }
+
+    public <T> void setParameter(int index, ParameterRune<? extends T> parameter) {
+        if (index < 0 || index >= parameters.length) { return; }
+        if (parameter == null || valid[index].isInstance(parameter.getValue())) {
+            parameters[index] = parameter;
+        }
+        else {
+            Ashes.LOGGER.warn("Invalid parameter type '{}' provided to leaf of type '{}'", parameter.getTypeID(), getTypeID());
+        }
+    }
+
+    @Override
+    protected final void saveImpl(CompoundTag tag) {
+        ListTag listTag = new ListTag();
+        for (ParameterRune<?> rune : parameters) {
+            CompoundTag runeTag = new CompoundTag();
+            if (rune != null) { rune.save(runeTag); }
+            listTag.add(runeTag);
+        }
+        tag.put(PARAMETERS_TAG, listTag);
+    }
+
+    @Override
+    protected final void loadImpl(CompoundTag tag) {
+        ListTag list = tag.getList(PARAMETERS_TAG, Tag.TAG_COMPOUND);
+        for (int i = 0; i < list.size(); i++) {
+            setParameter(i, Rune.of(list.getCompound(i), ParameterRune.class));
+        }
+    }
+}

src/main/java/info/shylie/ashes/api/rune/ParameterRune.java

@@ -0,0 +1,64 @@
+package info.shylie.ashes.api.rune;
+
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.world.InteractionHand;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.context.UseOnContext;
+import net.minecraft.world.level.Level;
+
+public abstract class ParameterRune<T> extends Rune {
+    private T data;
+
+    public ParameterRune(RuneType<? extends ParameterRune<?>> type) {
+        super(type);
+    }
+
+    public record UseContext(Level level, Player player, InteractionHand hand) {
+    }
+
+    public record ItemStackedOnMeContext(ItemStack me, ItemStack other) {
+    }
+
+    public final boolean setParameter(UseOnContext context) {
+        T newData = calculate(context);
+
+        if (newData == null) { return false; }
+
+        data = newData;
+        save(context.getItemInHand().getOrCreateTag());
+        return true;
+    }
+
+    public final boolean setParameter(UseContext context) {
+        T newData = calculate(context);
+
+        if (newData == null) { return false; }
+
+        data = newData;
+        save(context.player().getItemInHand(context.hand()).getOrCreateTag());
+        return true;
+    }
+
+    public final boolean setParameter(ItemStackedOnMeContext context) {
+        T newData = calculate(context);
+
+        if (newData == null) { return false; }
+
+        data = newData;
+        save(context.me().getOrCreateTag());
+        return true;
+    }
+
+    public final T getValue() { return data; }
+
+    @Override
+    protected final void loadImpl(CompoundTag tag) {
+        data = loadImpl2(tag);
+    }
+
+    protected T calculate(UseContext context) { return null; }
+    protected T calculate(UseOnContext context) { return null; }
+    protected T calculate(ItemStackedOnMeContext context) { return null; }
+    protected abstract T loadImpl2(CompoundTag tag);
+}

src/main/java/info/shylie/ashes/api/rune/Rune.java

@@ -0,0 +1,63 @@
+package info.shylie.ashes.api.rune;
+
+import info.shylie.ashes.AshesRegistry;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.inventory.tooltip.TooltipComponent;
+
+public abstract class Rune {
+    public static final String RUNE_TYPE_TAG = "rune_type";
+    public static final String RUNE_DATA_TAG = "rune_data";
+
+    private final RuneType<? extends Rune> type;
+
+    public Rune(RuneType<? extends Rune> type) {
+        this.type = type;
+    }
+
+    public String getTypeID() {
+        return type.toString();
+    }
+
+    public Component getTooltip() {
+        return Component.empty();
+    }
+
+    public TooltipComponent getTooltipImage() {
+        return null;
+    }
+
+    public void save(CompoundTag tag) {
+        tag.putString(RUNE_TYPE_TAG, AshesRegistry.RUNE_REGISTRY.get().getKey(type).toString());
+        CompoundTag runeData = new CompoundTag();
+        saveImpl(runeData);
+        tag.put(RUNE_DATA_TAG, runeData);
+    }
+
+    Rune load(CompoundTag tag) {
+        loadImpl(tag.getCompound(RUNE_DATA_TAG));
+        return this;
+    }
+
+    protected abstract void saveImpl(CompoundTag tag);
+    protected abstract void loadImpl(CompoundTag tag);
+
+    public static Rune of(CompoundTag tag) {
+        return of(tag, Rune.class);
+    }
+
+    public static <T extends Rune> T of(CompoundTag tag, Class<T> clazz) {
+        if (tag == null) { return null; }
+        ResourceLocation location = ResourceLocation.tryParse(tag.getString(RUNE_TYPE_TAG));
+        if (location == null) { return null; }
+
+        RuneType<?> type = AshesRegistry.RUNE_REGISTRY.get().getValue(location);
+        if (type == null) { return null; }
+
+        Rune rune = type.create();
+        if (!clazz.isInstance(rune)) { return null; }
+
+        return (T)rune.load(tag);
+    }
+}

src/main/java/info/shylie/ashes/api/rune/RuneType.java

@@ -0,0 +1,40 @@
+package info.shylie.ashes.api.rune;
+
+import info.shylie.ashes.AshesRegistry;
+
+public class RuneType<T extends Rune> {
+    private final RuneFactory<T> factory;
+
+    protected RuneType(RuneFactory<T> factory) {
+        this.factory = factory;
+    }
+
+    public T create() {
+        return factory.create(this);
+    }
+
+    @Override
+    public String toString() {
+        return AshesRegistry.RUNE_REGISTRY.get().getKey(this).toString();
+    }
+
+    public interface RuneFactory<T extends Rune> {
+        T create(RuneType<T> type);
+    }
+
+    public static class Builder<T extends Rune> {
+        private final RuneFactory<T> factory;
+
+        private Builder(RuneFactory<T> factory) {
+            this.factory = factory;
+        }
+
+        public RuneType<T> build() {
+            return new RuneType<>(factory);
+        }
+
+        public static <T extends Rune> Builder<T> of(RuneFactory<T> factory) {
+            return new Builder<>(factory);
+        }
+    }
+}

src/main/java/info/shylie/ashes/api/rune/TaskRune.java

@@ -0,0 +1,51 @@
+package info.shylie.ashes.api.rune;
+
+import info.shylie.ashes.api.golem.IGolem;
+
+public abstract class TaskRune extends Rune {
+    boolean ran;
+    private boolean running;
+
+    public TaskRune(RuneType<? extends TaskRune> type) {
+        super(type);
+    }
+
+    public enum Status {
+        SUCCESS,
+        FAILURE,
+        ONGOING
+    }
+
+    private boolean start(IGolem golem) {
+        if (!running) {
+            running = startImpl(golem);
+        }
+
+        return running;
+    }
+
+    void stop(IGolem golem) {
+        if (running) {
+            stopImpl(golem);
+
+            running = false;
+        }
+    }
+
+    public final Status update(IGolem golem) {
+        if (!start(golem)) {
+            return Status.FAILURE;
+        }
+        ran = true;
+        Status status = updateImpl(golem);
+        if (status != Status.ONGOING) {
+            stop(golem);
+        }
+
+        return status;
+    }
+
+    protected boolean startImpl(IGolem golem) { return true; }
+    protected void stopImpl(IGolem golem) { }
+    protected abstract Status updateImpl(IGolem golem);
+}

src/main/java/info/shylie/ashes/api/tooltip/SingleItemTooltip.java

@@ -0,0 +1,39 @@
+package info.shylie.ashes.api.tooltip;
+
+import net.minecraft.client.gui.Font;
+import net.minecraft.client.gui.GuiGraphics;
+import net.minecraft.client.gui.screens.inventory.tooltip.ClientTooltipComponent;
+import net.minecraft.world.inventory.tooltip.TooltipComponent;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+
+public class SingleItemTooltip implements TooltipComponent {
+    private final Item item;
+
+    public SingleItemTooltip(Item item) {
+        this.item = item;
+    }
+
+    public static class SingleItemClientTooltip implements ClientTooltipComponent {
+        SingleItemTooltip tooltip;
+
+        public SingleItemClientTooltip(SingleItemTooltip tooltip) {
+            this.tooltip = tooltip;
+        }
+
+        @Override
+        public int getHeight() {
+            return 18;
+        }
+
+        @Override
+        public int getWidth(Font font) {
+            return 18;
+        }
+
+        @Override
+        public void renderImage(Font font, int x, int y, GuiGraphics graphics) {
+            graphics.renderFakeItem(new ItemStack(tooltip.item), x, y);
+        }
+    }
+}

src/main/java/info/shylie/ashes/datagen/ItemModels.java

@@ -17,7 +17,7 @@ public class ItemModels extends ItemModelProvider {
     @Override
     protected void registerModels() {
         basicItem(AshesRegistry.HEATED_ASHY_INGOT.get());
-        itemWithTexture(AshesRegistry.PARAM_RUNE, "rune");
+        basicItem(AshesRegistry.RUNE.get());
         spawnEgg(AshesRegistry.ASHEN_GOLEM_SPAWN_EGG);
     }
 

src/main/java/info/shylie/ashes/entity/AshenGolemEntity.java

@@ -1,7 +1,12 @@
 package info.shylie.ashes.entity;
 
 import com.rekindled.embers.datagen.EmbersSounds;
+import info.shylie.ashes.api.golem.IGolem;
+import info.shylie.ashes.api.rune.Rune;
+import info.shylie.ashes.api.rune.TaskRune;
+import info.shylie.ashes.entity.ai.GolemTaskGoal;
 import net.minecraft.core.BlockPos;
+import net.minecraft.nbt.CompoundTag;
 import net.minecraft.sounds.SoundEvent;
 import net.minecraft.world.damagesource.DamageSource;
 import net.minecraft.world.entity.EntityType;
@@ -12,8 +17,10 @@ import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.state.BlockState;
 import org.jetbrains.annotations.Nullable;
 
-public class AshenGolemEntity extends AbstractGolem {
-    public AshenGolemEntity(EntityType<? extends AbstractGolem> entityType, Level level) {
+public class AshenGolemEntity extends AbstractGolem implements IGolem {
+    private TaskRune task;
+
+    public AshenGolemEntity(EntityType<? extends AshenGolemEntity> entityType, Level level) {
         super(entityType, level);
     }
 
@@ -37,4 +44,34 @@ public class AshenGolemEntity extends AbstractGolem {
         super.playStepSound(pos, state);
         playSound(EmbersSounds.ANCIENT_GOLEM_STEP.get());
     }
+
+    @Override
+    public AshenGolemEntity asEntity() {
+        return this;
+    }
+
+    @Override
+    public TaskRune getTask() {
+        return task;
+    }
+
+    @Override
+    public void setTask(TaskRune task) {
+        this.task = task;
+    }
+
+    @Override
+    public void addAdditionalSaveData(CompoundTag tag) {
+        task.save(tag);
+    }
+
+    @Override
+    public void readAdditionalSaveData(CompoundTag tag) {
+        task = Rune.of(tag, TaskRune.class);
+    }
+
+    @Override
+    protected void registerGoals() {
+        goalSelector.addGoal(1, new GolemTaskGoal(this));
+    }
 }

src/main/java/info/shylie/ashes/entity/ai/GolemTaskGoal.java

@@ -0,0 +1,33 @@
+package info.shylie.ashes.entity.ai;
+
+import info.shylie.ashes.api.golem.IGolem;
+import info.shylie.ashes.api.rune.TaskRune;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.world.entity.ai.goal.Goal;
+
+public class GolemTaskGoal extends Goal {
+    private final IGolem golem;
+
+    public GolemTaskGoal(IGolem golem) {
+        this.golem = golem;
+    }
+    
+    public void setTask(TaskRune task) {
+        golem.setTask(task);
+    }
+
+    @Override
+    public boolean canUse() {
+        return golem.getTask() != null;
+    }
+
+    @Override
+    public boolean canContinueToUse() {
+        return canUse();
+    }
+
+    @Override
+    public void tick() {
+        golem.updateTask();
+    }
+}

src/main/java/info/shylie/ashes/item/ParamRune.java

@@ -1,84 +0,0 @@
-package info.shylie.ashes.item;
-
-import info.shylie.ashes.Ashes;
-import info.shylie.ashes.AshesRegistry;
-import info.shylie.ashes.api.rune.IParamRune;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.world.InteractionHand;
-import net.minecraft.world.InteractionResult;
-import net.minecraft.world.InteractionResultHolder;
-import net.minecraft.world.entity.SlotAccess;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.inventory.ClickAction;
-import net.minecraft.world.inventory.Slot;
-import net.minecraft.world.item.Item;
-import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.context.UseOnContext;
-import net.minecraft.world.level.Level;
-
-public class ParamRune extends Item {
-    public ParamRune(Properties properties) {
-        super(properties);
-    }
-
-    public boolean setParameter(UseOnContext context) {
-        IParamRune<?> rune = getRune(context.getItemInHand());
-        if (rune == null) { return false; }
-        return rune.setParameter(context);
-    }
-    public boolean setParameter(IParamRune.UseContext context) {
-        IParamRune<?> rune = getRune(context.player().getItemInHand(context.hand()));
-        if (rune == null) { return false; }
-        return rune.setParameter(context);
-    }
-    public boolean setParameter(IParamRune.ItemStackedOnMeContext context) {
-        IParamRune<?> rune = getRune(context.me());
-        if (rune == null) { return false; }
-        return rune.setParameter(context);
-    }
-
-    @Override
-    public final InteractionResultHolder<ItemStack> use(Level level, Player player, InteractionHand hand) {
-        if (player.isCrouching() && setParameter(new IParamRune.UseContext(level, player, hand))) {
-            return InteractionResultHolder.success(player.getItemInHand(hand));
-        }
-
-        return InteractionResultHolder.pass(player.getItemInHand(hand));
-    }
-
-    @Override
-    public final InteractionResult useOn(UseOnContext context) {
-        Player player = context.getPlayer();
-
-        if (player != null && player.isCrouching() && setParameter(context)) {
-            return InteractionResult.SUCCESS;
-        }
-
-        return InteractionResult.PASS;
-    }
-
-    @Override
-    public boolean overrideOtherStackedOnMe(ItemStack me, ItemStack other, Slot slot, ClickAction action, Player player, SlotAccess slotAccess) {
-        return action == ClickAction.SECONDARY && !other.isEmpty() && setParameter(new IParamRune.ItemStackedOnMeContext(me, other));
-    }
-
-    @Override
-    public String getDescriptionId(ItemStack stack) {
-        IParamRune<?> rune = getRune(stack);
-        if (rune == null) { return ""; }
-        String desc = rune.getDescription(stack);
-        return desc == null ? "" : desc;
-    }
-
-    private IParamRune<?> getRune(ItemStack stack) {
-        if (stack.getTag() == null) { return null; }
-        IParamRune<?> rune = AshesRegistry.PARAM_RUNES_REGISTRY.get()
-                .getValue(new ResourceLocation(stack.getTag().getString("rune_type")));
-
-        if (rune == null) {
-            Ashes.LOGGER.warn("Unknown rune type: '{}'", stack.getTag().getString("rune_type"));
-        }
-
-        return rune;
-    }
-}

src/main/java/info/shylie/ashes/item/RuneItem.java

@@ -0,0 +1,116 @@
+package info.shylie.ashes.item;
+
+import info.shylie.ashes.api.golem.IGolem;
+import info.shylie.ashes.api.rune.*;
+import net.minecraft.network.chat.Component;
+import net.minecraft.world.InteractionHand;
+import net.minecraft.world.InteractionResult;
+import net.minecraft.world.InteractionResultHolder;
+import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.entity.SlotAccess;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.inventory.ClickAction;
+import net.minecraft.world.inventory.Slot;
+import net.minecraft.world.inventory.tooltip.TooltipComponent;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.TooltipFlag;
+import net.minecraft.world.item.context.UseOnContext;
+import net.minecraft.world.level.Level;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+import java.util.Optional;
+
+public class RuneItem extends Item {
+    public RuneItem(Properties properties) {
+        super(properties.stacksTo(1));
+    }
+
+    @Override
+    public final InteractionResultHolder<ItemStack> use(Level level, Player player, InteractionHand hand) {
+        if (player.isCrouching() && setParameter(new ParameterRune.UseContext(level, player, hand))) {
+            return InteractionResultHolder.success(player.getItemInHand(hand));
+        }
+
+        return InteractionResultHolder.pass(player.getItemInHand(hand));
+    }
+
+    @Override
+    public final InteractionResult useOn(UseOnContext context) {
+        Player player = context.getPlayer();
+
+        if (player != null && player.isCrouching() && setParameter(context)) {
+            return InteractionResult.SUCCESS;
+        }
+
+        return InteractionResult.PASS;
+    }
+
+    @Override
+    public boolean overrideOtherStackedOnMe(ItemStack me, ItemStack other, Slot slot, ClickAction action, Player player, SlotAccess slotAccess) {
+        if (action != ClickAction.SECONDARY) { return false; }
+
+        Rune rune = Rune.of(me.getTag());
+        if (rune instanceof ParameterRune<?> pRune) {
+            return !other.isEmpty() && setParameter(new ParameterRune.ItemStackedOnMeContext(me, other), pRune);
+        }
+        else if (rune instanceof CompositeTaskRune tRune) {
+            tRune.add(Rune.of(other.getTag(), TaskRune.class));
+            tRune.save(me.getOrCreateTag());
+            return !other.isEmpty();
+        }
+        else if (rune instanceof LeafTaskRune tRune) {
+            tRune.setParameter(0, Rune.of(other.getTag(), ParameterRune.class));
+            tRune.save(me.getOrCreateTag());
+            return !other.isEmpty();
+        }
+
+        return false;
+    }
+
+    @Override
+    public InteractionResult interactLivingEntity(ItemStack stack, Player player, LivingEntity entity, InteractionHand hand) {
+        if (entity instanceof IGolem golem) {
+            golem.setTask(Rune.of(stack.getTag(), TaskRune.class));
+
+            return InteractionResult.SUCCESS;
+        }
+
+        return InteractionResult.PASS;
+    }
+
+    @Override
+    public Optional<TooltipComponent> getTooltipImage(ItemStack stack) {
+        Rune rune = Rune.of(stack.getTag());
+        if (rune == null) { return Optional.empty(); }
+
+        return Optional.ofNullable(rune.getTooltipImage());
+    }
+
+    @Override
+    public void appendHoverText(ItemStack stack, @Nullable Level level, List<Component> components, TooltipFlag flags) {
+        Rune rune = Rune.of(stack.getTag());
+        if (rune == null) { return; }
+
+        Component component = rune.getTooltip();
+        if (component == null) { return; }
+
+        components.add(component);
+    }
+
+    private boolean setParameter(UseOnContext context) {
+        ParameterRune<?> rune = Rune.of(context.getItemInHand().getTag(), ParameterRune.class);
+        if (rune == null) { return false; }
+        return rune.setParameter(context);
+    }
+    private boolean setParameter(ParameterRune.UseContext context) {
+        ParameterRune<?> rune = Rune.of(context.player().getItemInHand(context.hand()).getTag(), ParameterRune.class);
+        if (rune == null) { return false; }
+        return rune.setParameter(context);
+    }
+    private boolean setParameter(ParameterRune.ItemStackedOnMeContext context, ParameterRune<?> rune) {
+        if (rune == null) { return false; }
+        return rune.setParameter(context);
+    }
+}

src/main/java/info/shylie/ashes/rune/param/BlockPosRune.java

@@ -1,34 +1,47 @@
 package info.shylie.ashes.rune.param;
 
-import info.shylie.ashes.api.rune.IParamRune;
+import info.shylie.ashes.api.rune.ParameterRune;
+import info.shylie.ashes.api.rune.RuneType;
+import net.minecraft.ChatFormatting;
 import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.world.item.ItemStack;
+import net.minecraft.network.chat.Component;
 import net.minecraft.world.item.context.UseOnContext;
 
-public class BlockPosRune implements IParamRune<BlockPos> {
-    @Override
-    public String getDescription(ItemStack stack) {
-        BlockPos pos = getParameter(stack);
-        if (pos == null) { return null; }
-        return String.format("(%d, %d, %d)", pos.getX(), pos.getY(), pos.getZ());
+public class BlockPosRune extends ParameterRune<BlockPos> {
+    private static final String X_TAG = "x";
+    private static final String Y_TAG = "y";
+    private static final String Z_TAG = "z";
+
+    public BlockPosRune(RuneType<? extends BlockPosRune> type) {
+        super(type);
     }
 
     @Override
-    public BlockPos getParameter(ItemStack stack) {
-        CompoundTag tag = stack.getOrCreateTag();
-        if (!tag.contains("x") || !tag.contains("y") || !tag.contains("z")) {
-            return null;
+    public Component getTooltip() {
+        BlockPos pos = getValue();
+        if (pos == null) {
+            return Component.translatable("rune.ashes.blockpos.default").withStyle(ChatFormatting.BLUE);
         }
-        return new BlockPos(tag.getInt("x"), tag.getInt("y"), tag.getInt("z"));
+        return Component.literal(
+                String.format("%d, %d, %d", pos.getX(), pos.getY(), pos.getZ())
+        ).withStyle(ChatFormatting.BLUE);
     }
 
     @Override
-    public boolean setParameter(UseOnContext context) {
-        CompoundTag tag = context.getItemInHand().getOrCreateTag();
-        tag.putInt("x", context.getClickedPos().getX());
-        tag.putInt("y", context.getClickedPos().getY());
-        tag.putInt("z", context.getClickedPos().getZ());
-        return true;
+    protected void saveImpl(CompoundTag tag) {
+        tag.putInt(X_TAG, getValue().getX());
+        tag.putInt(Y_TAG, getValue().getY());
+        tag.putInt(Z_TAG, getValue().getZ());
+    }
+
+    @Override
+    protected BlockPos loadImpl2(CompoundTag tag) {
+        return new BlockPos(tag.getInt(X_TAG), tag.getInt(Y_TAG), tag.getInt(Z_TAG));
+    }
+
+    @Override
+    protected BlockPos calculate(UseOnContext context) {
+        return context.getClickedPos();
     }
 }

src/main/java/info/shylie/ashes/rune/param/ItemRune.java

@@ -0,0 +1,41 @@
+package info.shylie.ashes.rune.param;
+
+import info.shylie.ashes.api.rune.ParameterRune;
+import info.shylie.ashes.api.rune.RuneType;
+import info.shylie.ashes.api.tooltip.SingleItemTooltip;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.inventory.tooltip.TooltipComponent;
+import net.minecraft.world.item.Item;
+import net.minecraftforge.registries.ForgeRegistries;
+
+public class ItemRune extends ParameterRune<Item> {
+    private static final String ITEM_TAG = "item";
+
+    public ItemRune(RuneType<? extends ItemRune> type) {
+        super(type);
+    }
+
+    @Override
+    public TooltipComponent getTooltipImage() {
+        Item item = getValue();
+        if (item == null) { return null; }
+
+        return new SingleItemTooltip(item);
+    }
+
+    @Override
+    protected Item calculate(ItemStackedOnMeContext context) {
+        return context.other().getItem();
+    }
+
+    @Override
+    protected Item loadImpl2(CompoundTag tag) {
+        return ForgeRegistries.ITEMS.getValue(ResourceLocation.tryParse(tag.getString(ITEM_TAG)));
+    }
+
+    @Override
+    protected void saveImpl(CompoundTag tag) {
+         tag.putString(ITEM_TAG, ForgeRegistries.ITEMS.getKey(getValue()).toString());
+    }
+}

src/main/java/info/shylie/ashes/rune/task/MoveRune.java

@@ -0,0 +1,50 @@
+package info.shylie.ashes.rune.task;
+
+import info.shylie.ashes.api.golem.IGolem;
+import info.shylie.ashes.api.rune.LeafTaskRune;
+import info.shylie.ashes.api.rune.RuneType;
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.entity.MoverType;
+import net.minecraft.world.entity.animal.AbstractGolem;
+import net.minecraft.world.phys.Vec3;
+
+public class MoveRune extends LeafTaskRune {
+    public MoveRune(RuneType<? extends MoveRune> type) {
+        super(type, BlockPos.class);
+    }
+
+    @Override
+    protected boolean startImpl(IGolem golem) {
+        return path(golem);
+    }
+
+    @Override
+    protected Status updateImpl(IGolem golem) {
+        AbstractGolem e = golem.asEntity();
+
+        if (e.getNavigation().isStuck()) {
+            return Status.FAILURE;
+        }
+
+        e.moveRelative(0.02F,
+                new Vec3(
+                        e.xxa,
+                        e.yya,
+                        e.zza
+                )
+        );
+        e.move(MoverType.SELF, e.getDeltaMovement());
+
+        return e.getNavigation().isDone() ? Status.SUCCESS : Status.ONGOING;
+    }
+
+    private boolean path(IGolem golem) {
+        BlockPos pos = getValue(0);
+        return pos != null && golem.asEntity().getNavigation().moveTo(
+                pos.getX(),
+                pos.getY(),
+                pos.getZ(),
+                1.0
+        );
+    }
+}

src/main/java/info/shylie/ashes/rune/task/SelectorRune.java

@@ -0,0 +1,25 @@
+package info.shylie.ashes.rune.task;
+
+import info.shylie.ashes.api.golem.IGolem;
+import info.shylie.ashes.api.rune.CompositeTaskRune;
+import info.shylie.ashes.api.rune.RuneType;
+import info.shylie.ashes.api.rune.TaskRune;
+
+public class SelectorRune extends CompositeTaskRune {
+    public SelectorRune(RuneType<? extends SelectorRune> type) {
+        super(type);
+    }
+
+    @Override
+    protected Status updateImpl2(IGolem golem) {
+        for (TaskRune rune : children) {
+            Status status = rune.update(golem);
+
+            if (status != Status.FAILURE) {
+                return status;
+            }
+        }
+
+        return Status.SUCCESS;
+    }
+}

src/main/java/info/shylie/ashes/rune/task/SequenceRune.java

@@ -0,0 +1,25 @@
+package info.shylie.ashes.rune.task;
+
+import info.shylie.ashes.api.golem.IGolem;
+import info.shylie.ashes.api.rune.RuneType;
+import info.shylie.ashes.api.rune.TaskRune;
+import info.shylie.ashes.api.rune.CompositeTaskRune;
+
+public class SequenceRune extends CompositeTaskRune {
+    public SequenceRune(RuneType<? extends SequenceRune> type) {
+        super(type);
+    }
+
+    @Override
+    protected Status updateImpl2(IGolem golem) {
+        for (TaskRune rune : children) {
+            Status status = rune.update(golem);
+
+            if (status != Status.SUCCESS) {
+                return status;
+            }
+        }
+
+        return Status.SUCCESS;
+    }
+}

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

@@ -0,0 +1,7 @@
+{
+  "rune.ashes.blockpos.default": "No position set",
+
+  "item.ashes.rune": "Rune",
+
+  "itemgroup.ashes": "Ashes"
+}