/// <summary> Remove the attribute with the given key, if it exists.</summary>
/// <param name="key">The name of the attribute.
/// </param>
public virtual void RemoveAttribute(System.String key)
{
TagAttribute attribute;
attribute = GetAttributeEx(key);
if (null != attribute)
{
AttributesEx.Remove(attribute);
}
}
/// <summary>
/// Checks whether the given target is valid for the given caster.
/// Is called automatically when SpellCast selects Targets.
/// Does not do maximum range check.
/// </summary>
public SpellFailedReason CheckValidTarget(WorldObject caster, WorldObject target)
{
if (AttributesEx.HasAnyFlag(SpellAttributesEx.CannotTargetSelf) && target == caster)
{
return(SpellFailedReason.NoValidTargets);
}
if (target is Unit)
{
// AuraState
if (RequiredTargetAuraState != 0 || ExcludeTargetAuraState != 0)
{
var state = ((Unit)target).AuraState;
if ((RequiredTargetAuraState != 0 && !state.HasAnyFlag(RequiredTargetAuraState)) ||
(ExcludeTargetAuraState != 0 && state.HasAnyFlag(ExcludeTargetAuraState)))
{
return(SpellFailedReason.TargetAurastate);
}
}
// Required Auras
if ((ExcludeTargetAuraId != 0 && ((Unit)target).Auras.Contains(ExcludeTargetAuraId)) ||
(RequiredTargetAuraId != 0 && !((Unit)target).Auras.Contains(RequiredTargetAuraId)))
{
return(SpellFailedReason.TargetAurastate);
}
}
// Make sure that we have a GameObject if the Spell requires one
if (TargetFlags.HasAnyFlag(SpellTargetFlags.UnkUnit_0x100) &&
(!(target is GameObject) || !target.IsInWorld))
{
return(SpellFailedReason.BadTargets);
}
// CreatureTypes
/*if (CreatureMask != CreatureMask.None &&
* (!(target is NPC) || !((NPC)target).CheckCreatureType(CreatureMask)))
* {
* return SpellFailedReason.BadImplicitTargets;
* }*/
if (!CanCastOnPlayer && target is Character)
{
return(SpellFailedReason.BadImplicitTargets);
}
// Corpse target
if (RequiresDeadTarget)
{
if (TargetFlags.HasAnyFlag(SpellTargetFlags.PvPCorpse | SpellTargetFlags.Corpse))
{
if (!(target is Corpse) ||
(TargetFlags.HasAnyFlag(SpellTargetFlags.PvPCorpse) && caster != null && !caster.IsHostileWith(target)))
{
return(SpellFailedReason.BadImplicitTargets);
}
}
else if ((target is NPC))
{
// need to be dead and looted empty
if (((NPC)target).IsAlive || target.Loot != null)
{
return(SpellFailedReason.TargetNotDead);
}
}
else if ((target is Character))
{
if (((Character)target).IsAlive)
{
return(SpellFailedReason.TargetNotDead);
}
}
}
else
{
if (target is Unit && !((Unit)target).IsAlive)
{
return(SpellFailedReason.TargetsDead);
}
}
// Rogues do it from behind
if (AttributesExB.HasFlag(SpellAttributesExB.RequiresBehindTarget))
{
if (caster != null && !caster.IsBehind(target))
{
return(SpellFailedReason.NotBehind);
}
}
//if (AttributesExC.HasFlag(SpellAttributesExC.NoInitialAggro))
//{
// if (target is Unit && ((Unit)target).IsInCombat)
// {
// return SpellFailedReason.TargetAffectingCombat;
// }
//}
if (Range.MinDist > 0 && caster != null &&
//caster.IsInRadius(target, caster.GetSpellMinRange(Range.MinDist, target)))
caster.IsInRadius(target, Range.MinDist))
{
return(SpellFailedReason.TooClose);
}
return(SpellFailedReason.Ok);
}
