games/src/base_game.rs

use super::*;

/// A good starting place for creating a game building on top of the base Bevy app
pub struct BaseGamePlugin {
    pub camera: CameraType
}

impl Plugin for BaseGamePlugin {
    fn build(&self, app: &mut App) {
        app.add_plugins(DefaultPlugins)
            .add_plugins(DebuggingPlugin);

        // Add a camera setup system and startup
        app.add_systems(Startup, match self.camera {
            CameraType::Camera2d => setup_camera_2d,
            CameraType::Camera3d => setup_camera_3d,
        });
    }
}

/// For selecting the type of camera this game requires
pub enum CameraType {
    Camera2d,
    Camera3d
}


/// System to toggle the visibility of entities based on their state
pub fn toggle_state_visibility<S: States + Component>(mut q: Query<(Entity, &mut Visibility, &S)>, curr: Res<State<S>>) {
    q.iter_mut().for_each(|(e, mut v, s)| {
        if curr.get() == s {
            *v = Visibility::Inherited;
        } else {
            *v = Visibility::Hidden;
        }
        debug!("Changing visibility of {:?} to {:?}", e, *v);
    });
}

fn setup_camera_2d(
    mut commands: Commands,
) {
    commands.spawn((Camera { ..default() }, Camera2d));
}

fn setup_camera_3d(
    mut commands: Commands,
) {
    commands.spawn((Camera { ..default() }, Camera3d { ..default() }));
}