void CreateBullet(){      
  float b1 = (bullet.GetComponent<BulletFather>().CurrSpeed / bullet.GetComponent<BulletFather>().Speed) - 1;
        float b2 = ((float)bullet.GetComponent<BulletFather>().CurrAtt / bullet.GetComponent<BulletFather>().Att) - 1;
}

void CreateBullet(){
BulletFather BulFather = bullet.GetComponent<BulletFather>(); 
float b1 = (BulFather.CurrSpeed / BulFather.Speed) - 1;
        float b2 = (BulFather.CurrAtt /BulFather.Att) - 1;
}

第二个代码是不是更加节约性能