//选择要去的目标位置.
void SelectTargetPos()
{
if (LockShip != null && TrackAction.IsTracking == false)
{
Vector2 targetDir = LockShip.GetPosition() - this.GetPosition();
targetDir = new Vector2(targetDir.Y, -targetDir.X);
Maths.Normalize(ref targetDir);
//根据0～180的随机角度旋转targetDir
targetDir.TurnTo(targetDir, Maths.Rnd.Next(314) * 0.01f);
targetDir = targetDir * keepDisFromEnemy + LockShip.GetPosition();
BattleScene.SceneSizeLimit(ref targetDir);
TrackPos(targetDir);
}
}
//=================
//TODO: AI攻击！
void AttckNow()
{
//更新手动瞄准方向
if (LockShip != null)
{
this.AimDir = LockShip.GetPosition() - this.GetPosition();
Maths.Normalize(ref this.AimDir);
}
else
{
this.AimDir = Vector2.Zero;
}
//根据射程随机选择武器
if (LockShip != null)
{
this.Weapon.RndShoot(disFromEnemy);
}
}
//选择/更新锁定目标
void SelectTarget()
{
//随机锁定半径内的敌人
if (this.LockShip == null)
{
for (int i = 0; i < CanLockEnemys.Count; i++)
{
if (Vector2.DistanceSquared(CanLockEnemys [i].GetPosition(),
this.GetPosition()) < lockRadius &&
CanLockEnemys [i].status != ObjectStatus.Die)
{
if (Maths.Rnd.Next(1, 4) == 2)
{ //1/3的几率锁定此敌人
this.LockShip = CanLockEnemys [i];
}
}
}
}
else
{ //锁定更新
disFromEnemy = Vector2.DistanceSquared(LockShip.GetPosition(),
this.GetPosition());
if (disFromEnemy > lockRadius)
{ //超出范围就解锁
this.LockShip = null;
}
}
//清除死亡的敌人
if (this.LockShip != null && this.LockShip.status
== ObjectStatus.Die)
{
this.LockShip = null;
}
for (int i = 0; i < this.CanLockEnemys.Count; i++)
{
if (this.CanLockEnemys[i].status == ObjectStatus.Die)
{
this.CanLockEnemys.RemoveAt(i);
}
}
}
