// overload
public override void Update()
{
base.Update(); // count for life
//delta
IPair delta = new IPair();
if (move_vector_ != null)
{
delta.Add(move_vector_);
}
delta.Add(repulse_);
pos_.Add(delta);
if (GameDef.CollisionWall(pos_, Radius))
{
Explode = true;
}
//if (delta.Zero()) Explode = true;
// effect update
if (effect_list_ != null)
{
foreach (Effect effect in effect_list_)
{
// 特效也會做平移
effect.Pos.Add(delta); // effect update 由 list 執行
}
}
}