private bool _AddBuff(Buff buff)
{
// look up or create a buff list for the target, then add/stack the buff according to its class type.
// the logic is a bit more complex that it seems necessary because we ensure the buff appears in the
// active buff list before calling Apply(), if Apply() fails we undo adding it. This allows buffs to
// recursively add/stack more of their own buff type without worrying about overwriting existing buffs.
if (_buffs.ContainsKey(buff.Target))
{
Type buffType = buff.GetType();
Buff existingBuff = _buffs[buff.Target].FirstOrDefault(b => b != null && b.GetType() == buffType);
if (existingBuff != null)
{
if (existingBuff.Stack(buff))
{
return(true);
}
// buff is non-stacking, just add normally
}
_buffs[buff.Target].Add(buff);
if (buff.Apply())
{
return(true);
}
else
{
_buffs[buff.Target].Remove(buff);
return(false);
}
}
else
{
var keyBuffs = new List <Buff>();
keyBuffs.Add(buff);
_buffs[buff.Target] = keyBuffs;
if (buff.Apply())
{
return(true);
}
else
{
_buffs.Remove(buff.Target);
return(false);
}
}
}
