/// <summary>
/// Checks several requirements for a new Duel to start.
/// </summary>
/// <param name="challenger"></param>
/// <param name="rival"></param>
/// <returns></returns>
public static SpellFailedReason CheckRequirements(Character challenger, Character rival)
{
if (challenger.IsDueling)
{
return SpellFailedReason.CantDuelWhileStealthed;
}
if (challenger.Zone != null && !challenger.Zone.Flags.HasFlag(ZoneFlags.Duel))
{
return SpellFailedReason.NotHere;
}
if (!challenger.KnowsOf(rival))
{
// can't duel what you can't see
return SpellFailedReason.NoValidTargets;
}
if (!rival.KnowsOf(challenger))
{
// can't duel when the other can't see you
return SpellFailedReason.CantDuelWhileInvisible;
}
if (rival.IsInCombat)
{
// can't duel anyone who is currently in combat
return SpellFailedReason.TargetInCombat;
}
if (rival.DuelOpponent != null)
{
// can't duel with someone who is already dueling
return SpellFailedReason.TargetDueling;
}
if (challenger.Map is Battleground)
{
// can't duel in Battlegrounds
return SpellFailedReason.NotHere;
}
return SpellFailedReason.Ok;
}