public abstract class Timer extends BukkitRunnable {

    protected double seconds = 5;
    double step = 1;
    boolean infinity = false;

    public Timer(double s, double step, int tick){
        runTaskTimer(MMain.inst, tick, tick);
        this.step = step;
        seconds = s;
        if(s == -1 && step == -1){
            infinity = true;
            return;
        }
    }

    @Override
    public void run() {
        onTick(seconds);
        if(infinity)return;
        if(seconds <= 1){
            onEnd();
            cancel();
            return;
        }
        seconds = seconds-step;
    }

    public abstract void onTick(double sec);
    public abstract void onEnd();
}