//! Shows how to set the solid color that is used to paint the window before the frame gets drawn.
//!
//! Acts as background color, since pixels that are not drawn in a frame remain unchanged.

use bevy::prelude::*;

fn main() {
    App::new()
        .insert_resource(ClearColor(Color::rgb(0.5, 0.5, 0.9)))
        .add_plugins(DefaultPlugins)
        .add_startup_system(setup)
        .add_system(change_clear_color)
        .run();
}

fn setup(mut commands: Commands) {
    commands.spawn_bundle(OrthographicCameraBundle::new_2d());
}

fn change_clear_color(input: Res<Input<KeyCode>>, mut clear_color: ResMut<ClearColor>) {
    if input.just_pressed(KeyCode::Space) {
        clear_color.0 = Color::PURPLE;
    }
}
