/// <summary>
/// Add given ability to list of available abilities.
/// If given ability is a duplicate of an already available ability then that
/// ability has it's rank increased
/// </summary>
/// <param name="activeAbilityToAddArg"></param>
public void AddActiveAbility(ActiveAbility activeAbilityToAddArg)
{
//get acquired ability that matches given ability
ActiveAbility matchedAcquiredAbility = activeAbilities.FirstOrDefault(
iterAbility => iterAbility.abilityId == activeAbilityToAddArg.abilityId);
//if already have acquired the given ability
if (matchedAcquiredAbility != null)
{
//increase rank of matched ability
matchedAcquiredAbility.PromoteAbilityRank();
}
//else does NOT yet have the given ability
else
{
//add ability to list of available abilities
activeAbilities.Add(activeAbilityToAddArg);
//equip new ability to a quick slot that does NOT already have an ability assigned to it
EquipAbilityToVacantQuickSlot(activeAbilities.Count - 1);
}
}