void Awake()
{
//取得
main_Camera = GameObject.FindWithTag("MainCamera");
camera_Position = main_Camera.transform.position.x;
//代入
back_Grounds[0] = left;
back_Grounds[1] = center;
back_Grounds[2] = right;
SPEED_RATE = speed_Rate;
for (int i = 0; i < 3; i++)
{
dequeue.Add_Last(back_Grounds[i]);
}
}