Capacitor Registration

This registry event extension allows you to register custom Capacitors. Capacitors are used in EnderIO machines and can modify different properties of them.

NOTE

This event extension only exists since mod version 1.21.1-0.12.0, release date: 2026-02-18.

It is a startup event and not reloadable! Keep in mind that startup events have to be located inside the kubejs/startup_scripts folder.

Overview

This is an extension to the built-in KubeJS item registry event. It adds convenience methods to register custom Capacitors via KubeJS.

• access in a startup script via: StartupEvents.registry
• functions:
  • baseValue(float)
    • description: sets the base value of the Capacitor; this is the value for all Capacitor modifiers if no custom value is set for them
    • required: no
    • default value: 1
  • modifierValue(CapacitorModifier, float)
    • description: sets the value for a specific Capacitor modifier; this overrides the base value for the specified modifier
    • required: no
    • default value: same as base value
    • CapacitorModifier is an enum and can be specified by using CapacitorModifier.<VALUE> or by an case-insensitive string
    • possible values:
      • ENERGY_CAPACITY - modifies the energy capacity of the machine
      • ENERGY_USE - modifies the energy use of the machine
      • FUEL_EFFICIENCY - modifies the fuel efficiency of the machine
      • BURNING_ENERGY_GENERATION - modifies the burning energy generation of the machine; only applies to generators
  • hideFromCreativeTab()
    • description: hides the Capacitor from the creative tab; this is useful for Capacitors that are only used for loot as a surprise
    • required: no
    • default value: false
  • all functions of the KubeJS ItemBuilder, for example displayName, rarity, tooltip, etc.

Event Listener

To access the event, the first thing you need to do is to open an event listener for the registry event in a startup script.

StartupEvents.registry("item", event => {
    // ...
})

After that, you can use the CapacitorBuilder to register a custom Capacitor.

Example

StartupEvents.registry("item", event => {
    event
        .create(
            "my_modpack:my_capacitor", // id of the capacitor (will use kubejs if no namespace is specified)
            "enderio:capacitor" // type to register (always enderio:capacitor)
        )
        .displayName("My Capacitor") // overrides the automatically generated display name, can still be changed with lang file
        .rarity("rare") // common, uncommon, rare, epic
        .glow(true) // enchantment overlay
        .baseValue(1.4)
        .modifierValue("energy_use", 0.2)
        .modifierValue("ENERGY_CAPACITY", 2)
        .modifierValue(CapacitorModifier.FUEL_EFFICIENCY, 2.3)
        .hideFromCreativeTab()
        .texture("minecraft:item/acacia_boat") // custom texture for the capacitor; this example uses the vanilla acacia boat texture
})