Creating Your First Material

When creating your material, you can specify its composition. This will be used to display on any of the items related to it.
The color of the Material is used to tint Fluids.

Element

public class MyMaterials {
    // This Material is 100% Netherium so it only needs to specify one element
    public static Material Netherium = new Material.Builder(YourMod.asResource("netherium"))
            .element("netherium")
            .colour(0xff333756)
            .build();

    public static void init() {}
}

Composition

public class MyMaterials {
    // Emeralds have a more complicated composition, but you can use the composition builder method to add multiple elements with specific quantities
    public static Material Emerald = new Material.Builder(Rutile.id("emerald"))
            .composition("3 beryllium", "2 aluminum", "6 silicon", "18 oxygen")
            .colour(0xff41f384)
            .build();

    public static void init() {}
}

Components

public class MyMaterials {
    // Netherite is an alloy of two other Materials. You can represent this using the components builder method
    public static Material Netherite = new Material.Builder(YourMod.asResource("netherite"))
            .components(RutileMaterials.Gold, 4, Netherium, 4)
            .colour(0x4d494d)
            .build();

    public static void init() {}
}

You only need to create the instances of the Material as the conclusion of the builder registers it to our registry.

To ensure registration, call the init method during the RegistryEvent.

@SubscribeEvent
public static void onRegister(RegisterEvent event) {
    if (didRunRegistration) {
        return;
    }
    MyElements.init();
    // Initialize your Materials:
    MyMaterials.init();
    didRunRegistration = true;
}