/// <summary>
/// 获得离摄像机最近的单位。最近指单位在镜头上的2D位置离镜头中央最近，即“看起来”最近。
/// </summary>
/// <returns>最近的单位</returns>
public Unit GetClosestUnit()
{
Unit player = GameCtrl.PlayerUnit;
if (player == null)
{
return(null);
}
IEnumerator <Unit> it = Gamef.GetUnitEnumerator();
Unit resUnit = null;
float minAngle = GameDB.MAX_AIMING_ANGLE;
Vector3 fwd = transform.forward;
Vector3 pos = transform.position;
Unit tmp;
do
{
tmp = it.Current;
if (tmp != player)
{
if (tmp == null)
{
Debug.Log("???");
it.Reset();
tmp = it.Current;
}
float angle = Vector3.Angle(fwd, tmp.transform.position - pos);
if (angle < minAngle)
{
minAngle = angle;
resUnit = tmp;
}
}
} while (it.MoveNext());
Debug.Log("Unit Closest to Player is " + (resUnit == null ? "null" : resUnit.gameObject.name));
return(resUnit);
}