Minecraft Script Generated by ScripterAI

"Make an item with the name Heart and as soon as you use it you get an extra heart"

/* To create an item that gives the player an extra heart when used, we first need to create a custom item class that extends Item and override the onItemUseFinish method. Then, we can increase the player's maximum health using the AttributeModifier. */

public class HeartItem extends Item {
    public HeartItem(Properties properties) {
        super(properties);
    }

@Override
    public ItemStack onItemUseFinish(ItemStack stack, World world, LivingEntity entityLiving) {
        if (entityLiving instanceof PlayerEntity) {
            PlayerEntity player = (PlayerEntity) entityLiving;
            /* Increase the player's maximum health by 2 (1 heart) */
            ModifiableAttributeInstance maxHealth = player.getAttribute(Attributes.MAX_HEALTH);
            maxHealth.addTransientModifier(new AttributeModifier(UUID.randomUUID(), "extra_heart", 2, AttributeModifier.Operation.ADDITION));
            /* Heal the player for the amount of the extra heart */
            player.heal(2);
            /* Decrease the item stack size by 1 */
            stack.shrink(1);
        }
        return stack;
    }
}

/* Now, register the Heart item in your ItemInit class. */

public static final RegistryObject<Item> HEART_ITEM = ITEMS.register("heart", () -> new HeartItem(new Item.Properties().tab(ItemGroup.TAB_MISC)));