Callback Events

Callback events, or simply just events, are containers of data for callbacks. They are typically the only parameter of any callback.

A callback event is different from a chart event in that callback events are used exclusively for scripting, while chart events are instantiated through charts and operate only on PlayState.

Common Events

Some events that are typically used, but are not limited to, include:

• CancellableEvent: Perhaps the most used and inherited, CancellableEvent is good for cancelling some sort of action. For example, it can cancel the gameplay countdown.
• NoteHitEvent: A type of CancellableEvent that handles the state of note hits, as well as things that PlayState should take into account, like the health gain.
• NoteMissEvent: Ditto, but for note misses.
• EventGameEvent: Used for handling chart events. This extends CancellableEvent, but there is typically no need to cancel.

A full list of events and their API documentation can be seen here.

Custom Events

Custom events can be defined through DynamicEvent, but there is typically no need to do this. The option is available, though.