/// <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);
}
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);
}
}