Esempio n. 1
0
        /// <summary>
        /// Runs validation checks to ensure activator can use a perk feat.
        /// Activation will fail if any of the following are true:
        ///     - Target is invalid
        ///     - Activator is a ship
        ///     - Feat is not a perk feat
        ///     - Cooldown has not passed
        /// </summary>
        /// <param name="activator">The creature activating a perk feat.</param>
        /// <param name="target">The target of the perk feat.</param>
        /// <param name="featID">The ID number of the feat being used.</param>
        /// <returns>true if able to use perk feat on target, false otherwise.</returns>
        public static bool CanUsePerkFeat(NWCreature activator, NWObject target, Feat featID)
        {
            var perkFeat = DataService.PerkFeat.GetByFeatIDOrDefault((int)featID);

            // There's no matching feat in the DB for this ability. Exit early.
            if (perkFeat == null)
            {
                return(false);
            }

            // Retrieve the perk information.
            Data.Entity.Perk perk = DataService.Perk.GetByIDOrDefault(perkFeat.PerkID);

            // No perk could be found. Exit early.
            if (perk == null)
            {
                return(false);
            }

            // Check to see if we are a spaceship.  Spaceships can't use abilities...
            if (activator.GetLocalInt("IS_SHIP") > 0 || activator.GetLocalInt("IS_GUNNER") > 0)
            {
                activator.SendMessage("You cannot use that ability while piloting a ship.");
                return(false);
            }

            // Retrieve the perk-specific handler logic.
            var handler = PerkService.GetPerkHandler(perkFeat.PerkID);

            // Get the creature's perk level.
            int creaturePerkLevel = PerkService.GetCreaturePerkLevel(activator, perk.ID);

            // If player is disabling an existing stance, remove that effect.
            if (perk.ExecutionTypeID == PerkExecutionType.Stance)
            {
                // Can't process NPC stances at the moment. Need to do some more refactoring before this is possible.
                // todo: handle NPC stances.
                if (!activator.IsPlayer)
                {
                    return(false);
                }

                PCCustomEffect stanceEffect = DataService.PCCustomEffect.GetByStancePerkOrDefault(activator.GlobalID, perk.ID);

                if (stanceEffect != null)
                {
                    if (CustomEffectService.RemoveStance(activator))
                    {
                        return(false);
                    }
                }
            }

            // Check for a valid perk level.
            if (creaturePerkLevel <= 0)
            {
                activator.SendMessage("You do not meet the prerequisites to use this ability.");
                return(false);
            }

            // Verify that this hostile action meets PVP sanctuary restriction rules.
            if (handler.IsHostile() && target.IsPlayer)
            {
                if (!PVPSanctuaryService.IsPVPAttackAllowed(activator.Object, target.Object))
                {
                    return(false);
                }
            }

            // Activator and target must be in the same area and within line of sight.
            if (activator.Area.Resref != target.Area.Resref ||
                _.LineOfSightObject(activator.Object, target.Object) == false)
            {
                activator.SendMessage("You cannot see your target.");
                return(false);
            }

            // Run this perk's specific checks on whether the activator may use this perk on the target.
            string canCast = handler.CanCastSpell(activator, target, perkFeat.PerkLevelUnlocked);

            if (!string.IsNullOrWhiteSpace(canCast))
            {
                activator.SendMessage(canCast);
                return(false);
            }

            // Calculate the FP cost to use this ability. Verify activator has sufficient FP.
            int fpCost    = handler.FPCost(activator, handler.FPCost(activator, perkFeat.BaseFPCost, perkFeat.PerkLevelUnlocked), perkFeat.PerkLevelUnlocked);
            int currentFP = GetCurrentFP(activator);

            if (currentFP < fpCost)
            {
                activator.SendMessage("You do not have enough FP. (Required: " + fpCost + ". You have: " + currentFP + ")");
                return(false);
            }

            // Verify activator isn't busy or dead.
            if (activator.IsBusy || activator.CurrentHP <= 0)
            {
                activator.SendMessage("You are too busy to activate that ability.");
                return(false);
            }

            // verify activator is commandable. https://github.com/zunath/SWLOR_NWN/issues/940#issue-467175951
            if (!activator.IsCommandable)
            {
                activator.SendMessage("You cannot take actions currently.");
                return(false);
            }

            // If we're executing a concentration ability, check and see if the activator currently has this ability
            // active. If it's active, then we immediately remove its effect and bail out.
            // Any other ability (including other concentration abilities) execute as normal.
            if (perk.ExecutionTypeID == PerkExecutionType.ConcentrationAbility)
            {
                // Retrieve the concentration effect for this creature.
                var concentrationEffect = GetActiveConcentrationEffect(activator);
                if ((int)concentrationEffect.Type == perk.ID)
                {
                    // It's active. Time to disable it.
                    EndConcentrationEffect(activator);
                    activator.SendMessage("Concentration ability '" + perk.Name + "' deactivated.");
                    SendAOEMessage(activator, activator.Name + " deactivates concentration ability '" + perk.Name + "'.");
                    return(false);
                }
            }

            // Retrieve the cooldown information and determine the unlock time.
            int?     cooldownCategoryID = handler.CooldownCategoryID(activator, perk.CooldownCategoryID, perkFeat.PerkLevelUnlocked);
            DateTime now            = DateTime.UtcNow;
            DateTime unlockDateTime = cooldownCategoryID == null ? now : GetAbilityCooldownUnlocked(activator, (int)cooldownCategoryID);

            // Check if we've passed the unlock date. Exit early if we have not.
            if (unlockDateTime > now)
            {
                string timeToWait = TimeService.GetTimeToWaitLongIntervals(now, unlockDateTime, false);
                activator.SendMessage("That ability can be used in " + timeToWait + ".");
                return(false);
            }

            // Passed all checks. Return true.
            return(true);
        }
Esempio n. 2
0
        private static void OnModuleUseFeat()
        {
            NWPlayer   pc       = Object.OBJECT_SELF;
            NWCreature target   = NWNXEvents.OnFeatUsed_GetTarget().Object;
            int        featID   = NWNXEvents.OnFeatUsed_GetFeatID();
            var        perkFeat = DataService.SingleOrDefault <PerkFeat>(x => x.FeatID == featID);

            if (perkFeat == null)
            {
                return;
            }
            Data.Entity.Perk perk = DataService.GetAll <Data.Entity.Perk>().SingleOrDefault(x => x.ID == perkFeat.PerkID);
            if (perk == null)
            {
                return;
            }

            // Check to see if we are a spaceship.  Spaceships can't use abilities...
            if (pc.GetLocalInt("IS_SHIP") > 0 || pc.GetLocalInt("IS_GUNNER") > 0)
            {
                pc.SendMessage("You cannot use that ability while piloting a ship.");
                return;
            }

            var perkAction = PerkService.GetPerkHandler(perkFeat.PerkID);

            Player playerEntity = DataService.Get <Player>(pc.GlobalID);
            int    pcPerkLevel  = PerkService.GetPCPerkLevel(pc, perk.ID);

            // If player is disabling an existing stance, remove that effect.
            if (perk.ExecutionTypeID == (int)PerkExecutionType.Stance)
            {
                PCCustomEffect stanceEffect = DataService.SingleOrDefault <PCCustomEffect>(x => x.StancePerkID == perk.ID &&
                                                                                           x.PlayerID == pc.GlobalID);

                if (stanceEffect != null)
                {
                    if (CustomEffectService.RemoveStance(pc))
                    {
                        return;
                    }
                }
            }

            if (pcPerkLevel <= 0)
            {
                pc.SendMessage("You do not meet the prerequisites to use this ability.");
                return;
            }

            if (perkAction.IsHostile() && target.IsPlayer)
            {
                if (!PVPSanctuaryService.IsPVPAttackAllowed(pc, target.Object))
                {
                    return;
                }
            }

            if (pc.Area.Resref != target.Area.Resref ||
                _.LineOfSightObject(pc.Object, target.Object) == 0)
            {
                pc.SendMessage("You cannot see your target.");
                return;
            }

            if (!perkAction.CanCastSpell(pc, target))
            {
                pc.SendMessage(perkAction.CannotCastSpellMessage(pc, target) ?? "That ability cannot be used at this time.");
                return;
            }

            int fpCost = perkAction.FPCost(pc, perkAction.FPCost(pc, perk.BaseFPCost, featID), featID);

            if (playerEntity.CurrentFP < fpCost)
            {
                pc.SendMessage("You do not have enough FP. (Required: " + fpCost + ". You have: " + playerEntity.CurrentFP + ")");
                return;
            }

            if (pc.IsBusy || pc.CurrentHP <= 0)
            {
                pc.SendMessage("You are too busy to activate that ability.");
                return;
            }

            // Check cooldown
            int?       cooldownCategoryID = perkAction.CooldownCategoryID(pc, perk.CooldownCategoryID, featID);
            PCCooldown pcCooldown         = DataService.GetAll <PCCooldown>().SingleOrDefault(x => x.PlayerID == pc.GlobalID &&
                                                                                              x.CooldownCategoryID == cooldownCategoryID);

            if (pcCooldown == null)
            {
                pcCooldown = new PCCooldown
                {
                    CooldownCategoryID = Convert.ToInt32(cooldownCategoryID),
                    DateUnlocked       = DateTime.UtcNow.AddSeconds(-1),
                    PlayerID           = pc.GlobalID
                };

                DataService.SubmitDataChange(pcCooldown, DatabaseActionType.Insert);
            }

            DateTime unlockDateTime = pcCooldown.DateUnlocked;
            DateTime now            = DateTime.UtcNow;

            if (unlockDateTime > now)
            {
                string timeToWait = TimeService.GetTimeToWaitLongIntervals(now, unlockDateTime, false);
                pc.SendMessage("That ability can be used in " + timeToWait + ".");
                return;
            }

            // Force Abilities (aka Spells)
            if (perk.ExecutionTypeID == (int)PerkExecutionType.ForceAbility)
            {
                target.SetLocalInt(LAST_ATTACK + pc.GlobalID, ATTACK_FORCE);
                ActivateAbility(pc, target, perk, perkAction, pcPerkLevel, PerkExecutionType.ForceAbility, featID);
            }
            // Combat Abilities
            else if (perk.ExecutionTypeID == (int)PerkExecutionType.CombatAbility)
            {
                target.SetLocalInt(LAST_ATTACK + pc.GlobalID, ATTACK_PHYSICAL);
                ActivateAbility(pc, target, perk, perkAction, pcPerkLevel, PerkExecutionType.CombatAbility, featID);
            }
            // Queued Weapon Skills
            else if (perk.ExecutionTypeID == (int)PerkExecutionType.QueuedWeaponSkill)
            {
                target.SetLocalInt(LAST_ATTACK + pc.GlobalID, ATTACK_PHYSICAL);
                HandleQueueWeaponSkill(pc, perk, perkAction, featID);
            }
            // Stances
            else if (perk.ExecutionTypeID == (int)PerkExecutionType.Stance)
            {
                target.SetLocalInt(LAST_ATTACK + pc.GlobalID, ATTACK_COMBATABILITY);
                ActivateAbility(pc, target, perk, perkAction, pcPerkLevel, PerkExecutionType.Stance, featID);
            }
        }