void Awake()
{
tank_hp_slider = GameObject.Find("Tank_HP").GetComponent <Slider>();
player = PlayerTank.GetComponent <Tank>();
max_hp = player.GetMaxHP();
GameObject.Find("Tank_Aim_Point").GetComponent <RawImage>().enabled = false;
tank_shell_info = GameObject.Find("Tank_Shell_Info").GetComponent <Slider>();
shell_n = GameObject.Find("Shell_Amount").GetComponent <Text>();
tank_shell_force = GameObject.Find("Tank_Shell_Force").GetComponent <Slider>();
rotation_line = GameObject.Find("Line").GetComponent <RectTransform>();
}
