## Shadowcaster
This is an implementation of recursive shadowcasting for use in grid based video games.
### Example Usage
#### Bevy
```Rust
/// Bevy requires any static data to implement Resource, so you can easily use that across the app
#[derive(Resource)]
pub struct VisContainer {
pub visibility: shadowcaster::Visibility,
}
/// update the observer as the player moves
pub fn player_transform_system(
mut commands: Commands,
player_query: Query<&Transform, With<Player>>,
) {
if player_query.get_single().is_err() {
return;
}
let player_transform = player_query.single();
vis_container.visibility.observer = player_grid_pos;
}
```