public bool StartCastAtPos(Unit instigator, ushort abilityID, Point3D worldPos, ushort zoneId, byte castSequence)
        {
            if (PreventCasting)
            {
                if (_Owner is Player)
                {
                    Player owner = _Owner as Player;
                    owner?.SendClientMessage("A developer has disabled all abilities.", ChatLogFilters.CHATLOGFILTERS_USER_ERROR);
                }
                return(false);
            }

            // Allow only interruption of channeled skills of a different ID to the skill being used
            if (IsCasting() && (!_abilityProcessor.IsChannelling || _abilityProcessor.AbInfo.Entry == abilityID))
            {
                return(false);
            }

            AbilityInfo abInfo = AbilityMgr.GetAbilityInfo(abilityID);

            if (abInfo == null || (abInfo.ConstantInfo.Origin != AbilityOrigin.AO_ITEM && !IsValidAbility(abInfo)))
            {
                return(false);
            }
            try
            {
                if (AbilityMgr.HasCommandsFor(abilityID) || abInfo.ConstantInfo.ChannelID != 0)
                {
                    if (_abilityProcessor == null)
                    {
                        _abilityProcessor = new AbilityProcessor(_unitOwner, this);
                    }

                    abInfo.Instigator = instigator;

                    if (!_abilityProcessor.HasInfo())
                    {
                        _abilityProcessor.StartAbilityAtPos(abInfo, castSequence, worldPos, zoneId);
                    }
                    return(true);
                }
                if (_Owner is Player)
                {
                    var owner = _Owner as Player;
                    owner?.SendClientMessage(abilityID + " " + AbilityMgr.GetAbilityNameFor(abilityID) + " has no implementation.", ChatLogFilters.CHATLOGFILTERS_USER_ERROR);
                }
                return(false);
            }

            catch (Exception e)
            {
                if (_Owner is Player)
                {
                    var owner = _Owner as Player;
                    owner?.SendClientMessage(abilityID + " " + AbilityMgr.GetAbilityNameFor(abilityID) + " threw an unhandled " + e.GetType().Name + " from " + e.TargetSite + ".");
                }
                return(false);
            }
        }
        public bool StartCast(Unit instigator, ushort abilityID, byte castSequence, byte cooldownGroup = 0, byte overrideAbilityLevel = 0, bool enemyVisible = true, bool friendlyVisible = true, bool moving = false)
        {
            if (PreventCasting)
            {
                if (_Owner is Player)
                {
                    (_Owner as Player)?.SendClientMessage("A developer has disabled all abilities.", ChatLogFilters.CHATLOGFILTERS_USER_ERROR);
                }
                return(false);
            }

            // Allow only interruption of channeled skills of a different ID to the skill being used
            if (IsCasting() && (!_abilityProcessor.IsChannelling || _abilityProcessor.AbInfo.Entry == abilityID))
            {
                return(false);
            }

            AbilityInfo abInfo = AbilityMgr.GetAbilityInfo(abilityID);

            if (abInfo == null || (abInfo.ConstantInfo.Origin != AbilityOrigin.AO_ITEM && !IsValidAbility(abInfo)))
            {
                return(false);
            }

            //Fix so that WE/WH cant use all their 3 openers at the same time, this is in conjunction with whats in AbilityProcessor
            if (_Owner is Player)
            {
                if ((_Owner as Player).StealthLevel == 0 && (abilityID == 9406 || abilityID == 9401 || abilityID == 9411 || abilityID == 8091 || abilityID == 8096 || abilityID == 8098))
                {
                    return(false);
                }
            }

            try
            {
                if (AbilityMgr.HasCommandsFor(abilityID) || abInfo.ConstantInfo.ChannelID != 0)
                {
                    if (_abilityProcessor == null)
                    {
                        _abilityProcessor = new AbilityProcessor(_unitOwner, this);
                    }

                    abInfo.Instigator = instigator;
                    abInfo.Level      = overrideAbilityLevel;

                    return(_abilityProcessor.StartAbility(abInfo, castSequence, cooldownGroup, enemyVisible, friendlyVisible, moving));
                }
                if (_Owner is Player)
                {
                    Player owner = _Owner as Player;
                    owner?.SendClientMessage(abilityID + " " + AbilityMgr.GetAbilityNameFor(abilityID) + " has no implementation.", ChatLogFilters.CHATLOGFILTERS_USER_ERROR);
                }
                return(false);
            }

            catch (Exception e)
            {
                if (_Owner is Player)
                {
                    (_Owner as Player)?.SendClientMessage(abilityID + " " + AbilityMgr.GetAbilityNameFor(abilityID) + " threw an unhandled " + e.GetType().Name + " from " + e.TargetSite + ".");
                }
                Log.Error("Ability System", e.ToString());
                return(false);
            }
        }