checking if a component is inside of an entity

[frail raven]

How do I check if a component is inside of an entity?

[placid hill]

What's the context? If you are Querying, you can query for Option<&Component> and then just check if the option is None.

Or if you have an Entity already and just want to know if it has a component, you could add another query to your system like

fn my_system(with_component: Query<(), With<Component>>) {
    // ... obtain an `entity: Entity`
    if with_component.contains(entity) {
        // ...
    }
}

[frail raven]

oh ok thank you