void OnDifficultyChange()
{
ball.transform.position = ballSpawn.position;
Time.timeScale = 0;
drawScript.inkLimit = difficulties[difficultyIndex].y;
drawScript.DeleteLine();
Destroy(currentBall);
SpawnBall();
OnDrawChange();
drawScript.isDraw = true;
Destroy(GameObject.FindGameObjectWithTag("Hazard"));
Destroy(GameObject.FindGameObjectWithTag("Star"));
bgRenderer.sprite = backgrounds[difficultyIndex + 1];
levelText.text = "Level " + (difficultyIndex + 2).ToString();
difficultyIndex++;
}