Adding servants

Due to complexity of entities adding servant is not possible in a data-driven way. You would need to write an addon for that. This requires you to be familiar with java.

Servants

To create a servant simply create your entity as usual and implement ServantLike on it. Override the required method and you are pretty much done.

public class MyServantEntity extends LivingEntity implements ServantLike<MyServantEntity>

Additionally you should call ServantLike#trackingTick in your entities tick method. The mod assumes all active servants in a grailwar to always be present and accessible. If you dont call it and your servant gets unloaded the mod will treat your entity as being defeated instead.

@Override
protected void tick() {
    this.trackingTick();
}

When implementing you might've noticed you need to provide an ServantProperties. While it is possible to hardcode a property it is better to use the mods builtin datapack system to allow configuring the properties. To fetch an instance based on your entity you can use DataAccess#get. This instance should ideally be catched.

Datagen

While you can manually write out the json for ServantProperties it is a good idea to datagen these instead. The mod provides a builtin datagen provider for that.

Using it is fairly straight forward but just extending ServantPropertiesProvider

public class Generator extends ServantPropertiesProvider