added tool functionality to stub

src/main/java/de/jottyfan/minecraft/gta/item/StubItem.java

@@ -0,0 +1,51 @@
+package de.jottyfan.minecraft.gta.item;
+
+import java.util.Map;
+
+import org.joml.Random;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.sounds.SoundEvents;
+import net.minecraft.sounds.SoundSource;
+import net.minecraft.world.InteractionResult;
+import net.minecraft.world.entity.item.ItemEntity;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.Items;
+import net.minecraft.world.item.context.UseOnContext;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
+
+public class StubItem extends Item {
+
+	private static final Map<Block, Item> SLASH_MAP = Map.of(
+			Blocks.HAY_BLOCK, Items.WHEAT,
+			Blocks.DRIED_KELP_BLOCK, Items.DRIED_KELP);
+
+	public StubItem(Properties properties) {
+		super(properties);
+		SLASH_MAP.toString();
+	}
+
+	@Override
+	public InteractionResult useOn(UseOnContext context) {
+		Level level = context.getLevel();
+		BlockPos pos = context.getClickedPos();
+		Block clickedBlock = level.getBlockState(pos).getBlock();
+		if (SLASH_MAP.containsKey(clickedBlock)) {
+			if (!level.isClientSide()) {
+				level.setBlockAndUpdate(pos, Blocks.AIR.defaultBlockState());
+				level.playSound(null, pos, SoundEvents.HOE_TILL, SoundSource.BLOCKS);
+				for (int i = 0; i < 9; i++) {
+					ItemStack stack = new ItemStack(SLASH_MAP.get(clickedBlock));
+					float scatter = new Random().nextFloat();
+					ItemEntity entiry = new ItemEntity(level, pos.getX(), pos.getY(), pos.getZ(),
+							stack, scatter, scatter, 0.2);
+					level.addFreshEntity(entiry);
+				}
+			}
+		}
+		return InteractionResult.SUCCESS;
+	}
+}

src/main/java/de/jottyfan/minecraft/gta/item/UnoItems.java

@@ -12,9 +12,13 @@ import net.minecraft.world.item.Item;
 import net.minecraft.world.item.Item.Properties;
 
 public class UnoItems {
-	public static final Item STUB = registerItem(Identifier.fromNamespaceAndPath(Uno.MOD_ID, "stub"));
+	public static final Item STUB = registerStubItem(Identifier.fromNamespaceAndPath(Uno.MOD_ID, "stub"));
 	public static final Item RUBY = registerItem(Identifier.fromNamespaceAndPath(Uno.MOD_ID, "ruby"));
 
+	private static final Item registerStubItem(Identifier identifier) {
+		return registerItem(identifier, new Item.Properties(), StubItem::new);
+	}
+
 	private static final Item registerItem(Identifier identifier) {
 		return registerItem(identifier, new Item.Properties(), Item::new);
 	}