#pragma once

#include <cstdint>

#include "Fader.h"

class Animation
{
    public:
        Animation(Fader *fader)
            : m_fader(fader), m_running(true)
        {}

        /*!
         * The animation's main function. Will be called once per frame.
         * 
         * \param frame     The current frame since the animation's start.
         */
        virtual void loop(uint64_t frame) = 0;

        /*!
         * Stop the animation. After this function is called, the animation code
         * might start some transition to black (all LEDs off).
         */
        virtual void stop(void)
        {
            m_running = false;
        }

        /*!
         * A function for checking wether the animation has stopped. This must
         * return true after the stop transition has finished.
         * 
         * \returns True if all activity of the animation code has stopped.
         */
        virtual bool finished(void)
        {
            return !m_running;
        }

        /*!
         * Reset function of the animation code. This should clear any
         * internal state.
         * 
         * By default does nothing.
         */
        virtual void reset(void) {};

    protected:
        Fader *m_fader;
        bool m_running;
};