Make 2D games with light and shadow in them.

/// Makes the Light on this node flicker like a flame.
component Flicker {
    /// How bright the flame burns between flickers.
    #[range(0.0..4.0)]
    brightness: f32 = 1.4,
    /// How far below that a flicker dips.
    #[range(0.0..1.0)]
    dip: f32 = 0.4,
    #[hidden]
    clock: f32 = 0.0,

    fn loop(dt: f32) {
        clock = clock + dt;
        // Two waves that never line up, so the flicker never repeats.
        let wave = (clock * 11.0).sin() * (clock * 7.3).sin();
        let level = brightness - dip * wave.abs();
        set_number("LightComponent", "intensity", level);
    }
}