Wildcard

const Wildcard: ComponentHandle<unknown>

Defined in: src/handle.ts:669

Built-in component that acts as a wildcard in queries. It has two use cases:

1. To query for all entities, including variations, such as components, systems and so on;
2. To query for all sources or targets of a relationship, without caring about the other end of the relationship.

Example

// 1. Query all simple entities (entities that are not also components, systems, resources or plugins):
query(Wildcard).withoutAny(Component, System, Resource, Plugin).forEach((id) => {
    ...
})

// 2. Query all entities that are children of any other entity:
query(pair(ChildOf, Wildcard)).forEach((child) => {
    const parent = child.targetOf(ChildOf)
})