Código de C sharp - realidad aumentada

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.UI;

public class Abecedario : MonoBehaviour {

	public Text name_text;

    public AudioClip[] clips;

    private AudioSource player;

    private int index=0;

    public Animator anim;

	bool aux=true;

	// Use this for initialization

	void Start () {

        player = GetComponent<AudioSource>();

        player.clip = clips[index];

        anim.GetComponent<Animator> ();

	}

	// Update is called once per frame

    void Update()

    {

        if (player.isPlaying)

        {

            anim.Play("Zoom");

        }

        else

        {

            anim.Play("None");

			aux = true;

        }

    }

	public void PrintLetterA () {

		if(aux)

		{

		  aux = false;

          print("A");

          name_text.text = "A";

          if (CheckNullSong()) return;

             player.Play();

		}//end if

	}

	public void PrintLetterB () {

		if (aux) {

			print ("B");

			name_text.text = "B";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

	}

	public void PrintLetterC(){

   		if (aux) {

			print ("C");

			name_text.text = "C";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterD()

    {

		if (aux) {

			print ("D");

			name_text.text = "D";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterE()

    {

		if (aux) {

			print ("E");

			name_text.text = "E";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterF()

    {

		if (aux) {

			print ("F");

			name_text.text = "F";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterG()

    {

		if (aux) {

			print ("G");

			name_text.text = "G";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterH()

    {

		if (aux) {

			print ("H");

			name_text.text = "H";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterI()

    {

		if (aux) {

			print ("I");

			name_text.text = "I";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterJ()

    {

		if (aux) {

			print ("J");

			name_text.text = "J";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterK()

    {

		if (aux) {

			print ("K");

			name_text.text = "K";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterL()

    {

		if (aux) {

			print ("L");

			name_text.text = "L";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterM()

    {

		if (aux) {

			print ("M");

			name_text.text = "M";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterN()

    {

		if (aux) {

			print ("N");

			name_text.text = "N";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterÑ()

    {

		if (aux) {

			print ("Ñ");

			name_text.text = "Ñ";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterO()

    {

		if (aux) {

			print ("O");

			name_text.text = "O";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterP()

    {

		if (aux) {

			print ("P");

			name_text.text = "P";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterQ()

    {

		if (aux) {

			print ("Q");

			name_text.text = "Q";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterR()

    {

		if (aux) {

			print ("R");

			name_text.text = "R";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterS()

    {

		if (aux) {

			print ("S");

			name_text.text = "S";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterT()

    {

		if (aux) {

			print ("T");

			name_text.text = "T";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterU()

    {

		if (aux) {

			print ("U");

			name_text.text = "U";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterV()

    {

		if (aux) {

			print ("V");

			name_text.text = "V";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterW()

    {

		if (aux) {

			print ("W");

			name_text.text = "W";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterX()

    {

		if (aux) {

			print ("X");

			name_text.text = "X";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterY()

    {

		if (aux) {

			print ("Y");

			name_text.text = "Y";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    public void PrintLetterZ()

    {

		if (aux) {

			print ("Z");

			name_text.text = "Z";

			if (CheckNullSong ())

				return;

			player.Play ();

		}

    }

    bool CheckNullSong()

    {

        if (player.clip == null)

        {

            Debug.Log("Null Song");

            return true;

        }//End If

        return false;

    }

}