public override void EnterFrame()
{
//Anyone to fire?
if (this._invaders.Count == 0)
{
return;
}
Random rnd = new Random();
if (rnd.Next(30) == 0) //yup, fire a shot!
{
Invader inv = null;
if (rnd.Next(4) == 0) //sometimes, let that someone be close to player to make it harder:
{
Invader invClosest = null;
float fXClosest = 9999;
for (int nColIndex = 0; nColIndex < this._columnSortedInvaders.Count; nColIndex++)
{
SortedList <int, Invader> slCol = this._columnSortedInvaders.Values[nColIndex];
inv = slCol.Values[slCol.Count - 1];
float fXDiff = Math.Abs(inv.LocX - GameMain.Instance.m_player.LocX);
if (fXDiff < fXClosest)
{
invClosest = inv;
fXClosest = fXDiff;
}
}
inv = invClosest;
}
else
{
SortedList <int, Invader> slCol = this._columnSortedInvaders.Values[rnd.Next(this._columnSortedInvaders.Count)];
inv = slCol.Values[slCol.Count - 1];
}
inv.Fire();
}
if (m_nNumWaitFrames-- > 0)
{
return;
}
this.Step();
}
