bevy_mod_check_filter

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bevy_mod_check_filter

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Better marker component ergonomics with the Bevy Engine

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# bevy_mod_check_filter

A query filter to allow `Enabled`-style marker components without losing the
ergonomics of `ZST`-style marker component filtering!

## Example

Without `bevy_mod_check_filter`:

```rust
#[derive(Component)]
struct Poisoned;

#[derive(Component)]
struct Name { name: &'static str }

fn all_poisoned(entities: Query<&Name, With<Poisoned>>) {
    // ...
}
```

With `bevy_mod_check_filter`:

```rust
#[derive(Component)]
struct Poisoned(pub bool);

impl std::ops::Deref for Poisoned {
    type Target = bool;
 
    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

#[derive(Component)]
struct Name { name: &'static str }

fn all_poisoned(entities: Query<&Name, Check<Poisoned, Is<true>>>) {
    // ...
}

// OR with one of the provided type aliases:
fn find_poisoned(entities: Query<&Name, IsTrue<Poisoned>>) {
    // ...
}
```

## License

All code in this repository is dual-licensed under either:

- MIT License (LICENSE-MIT file or http://opensource.org/licenses/MIT)
- Apache License, Version 2.0 (LICENSE-APACHE file or
  http://www.apache.org/licenses/LICENSE-2.0)

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