/// <summary>
        /// Calculates a rotation based on the FS>LvB>LB priority.
        /// </summary>
        public void CalculateRotation(bool addlb1, bool addlb2)
        {
            if (Talents == null || LB == null || FS == null || LvBFS == null || LvB == null)
                return;
            spells.Clear();
            Invalidate();

            float LvBreadyAt = 0, FSdropsAt = 0;
            while (true)
            {
                if (GetTime() >= LvBreadyAt) //LvB is ready
                {
                    if (GetTime() + LvBFS.CastTimeWithoutGCD < FSdropsAt) //the LvB cast will be finished before FS runs out
                    {
                        AddSpell(LvBFS);
                        LvBreadyAt = GetTime() + LvBFS.Cooldown;
                    }
                    else if (FSdropsAt == 0) //the first FS
                    {
                        FSdropsAt = GetTime() + FS.Duration;
                        AddSpell(FS);
                    }
                    else //since FS would run out recast FS now -> Rotation end
                        break; //done
                }
                else //LvB is not ready
                {
                    if (GetTime() + LvB.CastTime > FSdropsAt) //FS will run out
                    {
                        if (LvBreadyAt - (GetTime() + FS.CastTime) > LB.CastTime) //there is enough time to fit in another LB and a FS before LvB is ready
                        {
                            AddSpell(LB);
                        }
                        else if (LvBreadyAt - (GetTime() + FS.CastTime) > 0 && addlb2) //FS would still fit in before LvB is ready
                        {
                            AddSpell(LB);
                            break; //FS recast nescessary -> done
                        }
                        else
                        {
                            float waitTime = LvBreadyAt - (GetTime() + FS.CastTime);
                            if (waitTime > 0f)
                                AddSpell(new Wait(waitTime));
                            break; //FS recast nescessary -> done
                        }
                    }
                    else if (LvBreadyAt - GetTime() <= LB.CastTime && !addlb1) //time before the next LvB is lower than LB cast time
                        AddSpell(new Wait(LvBreadyAt - GetTime()));
                    else //LvB is on cooldown, FS won't run out soon
                        AddSpell(LB);
                }
            }
        }