====== Adding Tools ======
:!: This tutorial may be **outdated** as since 1.20.5, item components are used. For latest tutorial see [[https://docs.fabricmc.net/develop/items/custom-tools|corresponding page on Fabric Docs]].

===== Creating a Tool Material =====

Tools require a ''<yarn class_1832>'', which defines the following behavior:
  * durability
  * mining speed
  * attack damage
  * mining level
  * enchantability
  * repair ingredient

In other words, Tool Materials defines the //base// functionality for tools of that type, and tools can choose to use the values provided by the material, or roll with their own.

Vanilla Tool Materials can be found in ''<yarn class_1834>''. We will create a separate class for our material:

<yarncode java [enable_line_numbers=true]>
public class PotatoToolMaterial implements class_1832 {
    [...]
}
</yarncode>

''<yarn class_1832>'' has a number of methods you will need to implement:

=== Durability === 
''<yarn method_8025>'' defines the base durability tools will have when they use this material. In vanilla, all tools of the same type have the same durability.
<yarncode java [enable_line_numbers=true]>
    @Override
    public int method_8025() {
        return 500;
    }
</yarncode>

=== Mining Speed === 
''<yarn method_8027>'' defines how fast tools are when mining blocks. For a general sense of scale, Wooden has a speed of 2.0F, and Diamond has a speed of 8.0F.
<yarncode java [enable_line_numbers=true]>
    @Override
    public float method_8027() {
        return 5.0F;
    }
</yarncode>

=== Attack Damage === 
''<yarn method_8028>'' returns the base damage of the tool. Note that //most// tools ask for an integer damage amount in their constructor, which means the resulting damage is ''(float) materialDamage + (int) toolDamage + 1''. If you want your tool to entirely control its damage amount in its constructor, you can make your material return an attack damage of 0F. 
<yarncode java [enable_line_numbers=true]>
    @Override
    public float method_8028() {
        return 3.0F;
    }
</yarncode>

=== Mining Level === 
''<yarn method_8024>'' sets the mining level of a tool. Diamond has a mining level of 3, and a value of 3+ is required to mine Obsidian.
<yarncode java [enable_line_numbers=true]>
    @Override
    public int method_8024() {
        return 2;
    }
</yarncode>

=== Enchantability === 
''<yarn method_8026>'' defines how enchantable a tool is. Gold comes in at 22 Enchatability, while Diamond sits at 10. Higher enchantability means better (and higher-level) enchantments.
<yarncode java [enable_line_numbers=true]>
    @Override
    public int method_8026() {
        return 15;
    }
</yarncode>

=== Repair Ingredient === 
''<yarn method_8023>'' returns the ''<yarn class_1856>'' required to repair a tool in an anvil.
<yarncode java [enable_line_numbers=true]>
    @Override
    public class_1856 method_8023() {
        return class_1856.method_8091(class_1802.field_8567);
    }
</yarncode>

''<yarn class_1832>''s do //not// have to be registered. A good way to pass them out to tools that require them is by keeping an instance somewhere (and then referencing it when you need it). In this case, we will put our instance at the top of the class:
<yarncode java [enable_line_numbers=true]>
public class PotatoToolMaterial implements class_1832 {
    public static final PotatoToolMaterial INSTANCE = new PotatoToolMaterial();
    
    [...]
}
</yarncode>

''PotatoToolMaterial'' can now be referenced with ''PotatoToolMaterial.INSTANCE''. Alternatively, you can implement an enum similar to vanilla's ''ToolMaterials'' class that implements ''ToolMaterial'', which provides the instance and also allows easy creation of multiple tool materials.

===== Creating Tools Items =====

**In newer versions, all base tool class constructors are public and can be used directly to register the item.** This constructor lets you specify attack damage and attack speed of the tool. Remember they should be registered (see [[items]] tutorial).

<yarncode java>
public final class TutorialItems {
    public static class_1831 POTATO_PICKAXE = new PickaxeItem(PotatoToolMaterial.INSTANCE, 1, -2.8F, new FabricItemSettings());
    public static class_1831 POTATO_AXE = new AxeItem(PotatoToolMaterial.INSTANCE, 7.0F, -3.2F, new FabricItemSettings());
    public static class_1831 POTATO_HOE = new HoeItem(PotatoToolMaterial.INSTANCE, 7, -3.2F, new FabricItemSettings());
}
</yarncode>

===== Creating Tool Subclasses =====

**This section is not necessary in the current version of Fabric.** This is a good way to implement special attributes or behaviors for your tool, however.

In older versions, all base tool classes (''<yarn class_1810>'', ''<yarn class_1821>'', ''<yarn class_1794>'', ''<yarn class_1743>'', ''<yarn class_1829>'') require a ''<yarn class_1832>'', an attack speed (float), an additional attack damage amount (float for <yarn class_1743>; int for the rest), and an ''<yarn class_1792.class_1793>'' instance.

''<yarn class_1810>'' , ''<yarn class_1794>'' and ''<yarn class_1743>'' have protected constructors, which means you will need to create your own classes with public constructors: 
<yarncode java [enable_line_numbers=true]>
public class CustomPickaxeItem extends class_1810 {
    public CustomPickaxeItem(class_1832 material, int attackDamage, float attackSpeed, class_1793 settings) {
        super(material, attackDamage, attackSpeed, settings);
    }
}
</yarncode>

Using the public classes:
<yarncode java>
    public static class_1831 POTATO_PICKAXE = new CustomPickaxeItem(PotatoToolMaterial.INSTANCE, 1, -2.8F, new class_1792.class_1793());
    public static class_1831 POTATO_AXE = new CustomAxeItem(PotatoToolMaterial.INSTANCE, 7.0F, -3.2F, new class_1792.class_1793());
    public static class_1831 POTATO_HOE = new CustomHoeItem(PotatoToolMaterial.INSTANCE, 7, -3.2F, new class_1792.class_1793());
</yarncode>

===== Making your tool work with non-vanilla blocks =====

See [[mining_levels]].