Jogu
August 12, 2015, 7:56am
1
Can some one help me with this, I am fairly new to coding. I get this exception on an OnMouseDown event. I have 3 events in each 3 different game mode. If I hit play on a mode and then switch to playing a different mode, then this error occurs. How can I solve it?
I will be building it to an android device.
Coding in C#
The error:
NullReferenceException: Object reference not set to an instance of an object
thanks in anticipation
You need to actually post the script that’s causing the error, which in this case is “getMusic.cs”. Please remember to use [code ][/code ] tags as well, so that it’s easier to read.
Jogu
August 12, 2015, 8:09am
3
using UnityEngine;
using System.Collections;
//using UnityEditor;
using System;
using SongSelectorDLL;
public class getMusic : MonoBehaviour
{
static int score = 1;
static float delay = 3.0f;
static int n = 0;
static float wait;
static double counter;
static double newCounter;
//public GameObject Target_01;
//public GameObject SpecialObject;
GameObject temp, temp01, stemp;
static Boolean exitFlag = false;
Boolean exitFlagReset = false;
//public Audio a;
public AudioSource audioSource;
public static getMusic m;
static int speedCounter = 0;
int speedCounterReset = 0;
public static bool isWorking = true;
bool isWorkingReset = true;
//GameObject audiogetMusic;
private static getMusic instance;
public static getMusic getMusic_Instance
{
get
{
if (instance == null)
{
instance = GameObject.FindObjectOfType<getMusic>();
DontDestroyOnLoad(instance.gameObject);
}
return instance;
}
}
// Use this for initialization
void Start()
{
GetComponent<AudioSource>().spatialBlend = 0.0f;
GetComponent<AudioSource>().panStereo = 0;
//wait = 8.0f;
score = 1;
//audiogetMusic = GameObject.Find("SoundPicker");
audioSource = gameObject.GetComponent<AudioSource>();
audioSource.clip = GetComponent<AudioSource>().clip;
//Vector2 position = new Vector2(UnityEngine.Random.Range(-8.5f, -4.3f), UnityEngine.Random.Range(-4.3f, 4.3f));
//Instantiate(Target_01, position, Quaternion.identity);
//Vector2 position01 = new Vector2(UnityEngine.Random.Range(4.3f, 8.5f), UnityEngine.Random.Range(-4.3f, 4.3f));
//Instantiate(Target_02, position01, Quaternion.identity);
if (m == null)
m = this.GetComponent<getMusic>();
//PlayMusic();
//audioSource.Play();
}
public void makeZero()
{
GetComponent<AudioSource>().panStereo = 0;
}
void Awake()
{
resetVariables();
//audio.Stop();
//if (TryAgain.normalMode == true)
//{
//GetComponent<AudioSource>().Play();
//}
if (instance == null)
{
//If I am the first instance, make me the Singleton
instance = this.GetComponent<getMusic>();
DontDestroyOnLoad(this);
}
else
{
//If a Singleton already exists and you find
//another reference in scene, destroy it!
if (this != instance)
Destroy(this.gameObject);
}
}
// Update is called once per frame
void Update()
{
//Debug.Log("Audio Len: " + len);
//Debug.Log("Music: "+audioSource.time);
//Debug.Log("Sudden Death: " + suddenDeath);
//Debug.Log("Wait: " + wait);
//len = audioSource.time;
//if (SelectSong.startGame == true)
//{
// if (!timer01Flag)
// {
// counter -= Time.deltaTime;
// }
// newCounter -= Time.deltaTime;
//}
//else if (TryAgain.normalMode == true)
//{
// if (!timer01Flag)
// {
// counter -= Time.deltaTime;
// }
// newCounter -= Time.deltaTime;
//}
//newCounter02 -= Time.deltaTime;
//newCounter03 -= Time.deltaTime;
//if (!timer01Flag)
//{
// if (waitFor && counter <= 0)
// {
// Destroy(temp);
// Destroy(temp01);
// waitFor = false;
// counter = 5;
// }
//}
//if (specialWaitFor && newCounter <= 0)
//{
// Destroy(stemp);
// specialWaitFor = false;
// newCounter = UnityEngine.Random.Range(7, 15);
// specialDelay = false;
//}
//if (counter <= 0 && !waitFor) {
// var pos = new Vector2(UnityEngine.Random.Range(-8.7f, 8.7f), UnityEngine.Random.Range(-4.7f, 4.7f));
// var rot = Quaternion.identity;
// temp = (GameObject)Instantiate(Target_01,pos,rot);
// temp.AddComponent("Music");
// counter = 2.0;
// waitFor = true;
//
//}
//if (counter <= 0 && !waitFor)
//{
// var pos = new Vector2(UnityEngine.Random.Range(-8.5f, -4.3f), UnityEngine.Random.Range(-4.3f, 4.3f));
// var rot = Quaternion.identity;
// temp = (GameObject)Instantiate(Target_01, pos, rot);
// temp.AddComponent("Music");
// counter = 2.0f;
// waitFor = true;
//}
//if (newCounter <= 0 && !specialWaitFor)
//{
// var pos = new Vector2(UnityEngine.Random.Range(-8.7f, 8.7f), UnityEngine.Random.Range(-4.7f, 4.7f));
// var rot = Quaternion.identity;
// stemp = (GameObject)Instantiate(SpecialObject, pos, rot);
// stemp.AddComponent("specialScript");
// newCounter = 5.0;
// specialWaitFor = true;
// specialWait = 5.0f;
//}
// Debug.Log("Delta Time: "+Time.deltaTime);
//if (!generateBonus.timer01Flag)
//{
//if (SelectSong.startGame == true)
//{
// //Debug.Log(generateBonus.timer01Flag);
// if (!exitFlag)
// wait -= Time.deltaTime;
// if (wait <= 0 && !exitFlag)
// {
// //Debug.Log("Time limit exceeded: Quit : " + wait + " Score : " + (ScoreNumber.Score + Music.score + Music01.score));
// exitFlag = true;
// StopMusic();
// //GetComponent<AudioSource>().Stop();
// //Caching.CleanCache();
// //Application.Quit();
// isWorking = false;
// Application.LoadLevel(3);
// }
//}
//if (TryAgain.normalMode == true)
//{
// //Debug.Log(generateBonus.timer01Flag);
// if (!exitFlag)
// wait -= Time.deltaTime;
// if (wait <= 0 && !exitFlag)
// {
// Debug.Log("Time limit exceeded: Quit : ");
// exitFlag = true;
// StopMusic();
// //GetComponent<AudioSource>().Stop();
// //Caching.CleanCache();
// //Application.Quit();
// isWorking = false;
// Application.LoadLevel(3);
// }
//}
//if (Input.GetKeyDown(KeyCode.RightArrow) && !exitFlag)
//{
// if (audio.pan == 1)
// {
// score++;
// Debug.Log("Right : " + score);
// new WaitForSeconds(getDelay(score));
// n = random();
// if (n == 1)
// audio.pan = 1;
// else if (n == 0) audio.pan = 0;
// else audio.pan = -1;
// }
// else
// {
// audio.Stop();
// Debug.Log("Right exit : Score: " + (score + NewBehaviourScript.score));
// Application.Quit();
// }
//}
//else if (Input.GetKeyDown(KeyCode.LeftArrow) && !exitFlag)
//{
// if (audio.pan == -1)
// {
// score++;
// Debug.Log("Left : " + score);
// new WaitForSeconds(getDelay(score));
// n = random();
// if (n == 1)
// audio.pan = 1;
// else if (n == 0) audio.pan = 0;
// else audio.pan = -1;
// }
// else
// {
// audio.Stop();
// Debug.Log("Left exit : Score: "+(score+NewBehaviourScript.score));
// Application.Quit();
// }
//}
//else if (Input.GetKeyDown(KeyCode.UpArrow) && !exitFlag)
//{
// if (audio.pan == 0)
// {
// score++;
// Debug.Log("Up : " + score);
// new WaitForSeconds(getDelay(score));
// n = random();
// if (n == 1)
// audio.pan = 1;
// else if (n == 0) audio.pan = 0;
// else audio.pan = -1;
// }
// else
// {
// audio.Stop();
// Debug.Log("Up exit: Score: "+(score + NewBehaviourScript.score));
// Application.Quit();
// }
//}
//}
}
public static void eventOccured(string code) {
if(m==null) m = new getMusic();
m.doSomething(code);
}
public int random()
{
return UnityEngine.Random.Range(1, 12) % 3;
}
public void doSomething(string code) {
if (SelectSong.startGame == true)
{
switch (code)
{
case "HowToBrain": if (!exitFlag)
{
if (audioSource.panStereo == 0)
{
ScoreNumber.Score++;
speedCounter++;
//Debug.Log("Up : " + score);
//new WaitForSeconds(getDelay(score));
n = random();
if (n == 1)
audioSource.panStereo = 1;
else if (n == 0) audioSource.panStereo = 0;
else audioSource.panStereo = -1;
}
// else
// {
// Wrong.wrongCount++;
// if (Wrong.wrongCount == 3)
// {
// StopMusic();
// //audioSource.Stop();
// //Debug.Log("Up exit: Score: " + (score + NewBehaviourScript.score));
// //Application.Quit();
// isWorking = false;
// Application.LoadLevel(3);
// }
// }
}
break;
case "HowToRightBrain": if (!exitFlag)
{
if (audioSource.panStereo == 1)
{
ScoreNumber.Score++;
speedCounter++;
//Debug.Log("Right : " + score);
//new WaitForSeconds(getDelay(score));
n = random();
if (n == 1)
audioSource.panStereo = 1;
else if (n == 0) audioSource.panStereo = 0;
else audioSource.panStereo = -1;
}
// else
// {
// Wrong.wrongCount++;
// if (Wrong.wrongCount == 3)
// {
// StopMusic();
// //audioSource.Stop();
// //Debug.Log("Right exit : Score: " + (score + NewBehaviourScript.score));
// //Application.Quit();
// isWorking = false;
// Application.LoadLevel(3);
// }
// }
}
break;
case "HowToLeftBrain": if (!exitFlag)
{
if (audioSource.panStereo == -1)
{
ScoreNumber.Score++;
speedCounter++;
//Debug.Log("Left : " + score);
//new WaitForSeconds(getDelay(score));
n = random();
if (n == 1)
audioSource.panStereo = 1;
else if (n == 0) audioSource.panStereo = 0;
else audioSource.panStereo = -1;
}
//else
//{
// Wrong.wrongCount++;
// if (Wrong.wrongCount == 3)
// {
// StopMusic();
// //audioSource.Stop();
// //Debug.Log("Left exit : Score: " + (score + NewBehaviourScript.score));
// //Application.Quit();
// isWorking = false;
// Application.LoadLevel(3);
// }
//}
}
break;
}
}
}
//else if (TryAgain.normalMode == true)
//{
// switch (code)
// {
// case "Brain": if (!exitFlag)
// {
// if (audioSource.panStereo == 0)
// {
// ScoreNumber.Score++;
// speedCounter++;
// //Debug.Log("Up : " + score);
// //new WaitForSeconds(getDelay(score));
// n = random();
// if (n == 1)
// audioSource.panStereo = 1;
// else if (n == 0) audioSource.panStereo = 0;
// else audioSource.panStereo = -1;
// }
// //else
// //{
// // Wrong.wrongCount++;
// // if (Wrong.wrongCount == 3)
// // {
// // //StopMusic();
// // //audioSource.Stop();
// // //Debug.Log("Up exit: Score: " + (score + NewBehaviourScript.score));
// // //Application.Quit();
// // //isWorking = false;
// // Application.LoadLevel(3);
// // }
// //}
// }
// break;
// case "RightBrain": if (!exitFlag)
// {
// if (audioSource.panStereo == 1)
// {
// ScoreNumber.Score++;
// speedCounter++;
// //Debug.Log("Right : " + score);
// //new WaitForSeconds(getDelay(score));
// n = random();
// if (n == 1)
// audioSource.panStereo = 1;
// else if (n == 0) audioSource.panStereo = 0;
// else audioSource.panStereo = -1;
// }
// //else
// //{
// // Wrong.wrongCount++;
// // if (Wrong.wrongCount == 3)
// // {
// // StopMusic();
// // //audioSource.Stop();
// // //Debug.Log("Right exit : Score: " + (score + NewBehaviourScript.score));
// // //Application.Quit();
// // isWorking = false;
// // Application.LoadLevel(3);
// // }
// //}
// }
// break;
// case "LeftBrain": if (!exitFlag)
// {
// if (audioSource.panStereo == -1)
// {
// ScoreNumber.Score++;
// speedCounter++;
// //Debug.Log("Left : " + score);
// //new WaitForSeconds(getDelay(score));
// n = random();
// if (n == 1)
// audioSource.panStereo = 1;
// else if (n == 0) audioSource.panStereo = 0;
// else audioSource.panStereo = -1;
// }
// //else
// //{
// // Wrong.wrongCount++;
// // if (Wrong.wrongCount == 3)
// // {
// // StopMusic();
// // //audioSource.Stop();
// // //Debug.Log("Left exit : Score: " + (score + NewBehaviourScript.score));
// // //Application.Quit();
// // isWorking = false;
// // Application.LoadLevel(3);
// // }
// //}
// }
// break;
// }
//}
//}
//public float getDelay(int score)
//{
// if (generateBonus.specialDelay) return 3.0f;
// if (speedCounter < 20)
// {
// //counter = 0.0;
// {
// wait = 8.0f;
// Timer.Timeit = wait;
// }
// //if (Timer.Timeit >= 5)
// //{
// // Timer.Timeit = 5;
// //}
// return 3.0f;
// }
// if (speedCounter > 20 && speedCounter < 50)
// {
// //counter = 0.0;
// {
// wait = 6.0f;
// Timer.Timeit = wait;
// }
// //if (Timer.Timeit >= 4)
// //{
// // Timer.Timeit = 4;
// //}
// return 3.0f;
// }
// if (speedCounter > 50 && speedCounter < 80)
// {
// //counter = 0.0;
// {
// wait = 3.0f;
// Timer.Timeit = wait;
// }
// //if (Timer.Timeit >= 2)
// //{
// // Timer.Timeit = 2;
// //}
// return 3.0f;
// }
// if (speedCounter > 80)
// {
// //counter = 0.0;
// {
// wait = 1.0f;
// Timer.Timeit = wait;
// }
// /*if (Timer.Timeit >= 0.5)
// {
// Timer.Timeit = 0.5;
// }*/
// return 3.0f;
// }
// return 3.0f;
//}
public void PlayMusic()
{
SongSelector.GetInstance.PlayMusic();
}
//Call this before changing the level (i.e before loading the tryagain level)
//public void StopMusic()
//{
// SongSelector.GetInstance.StopMusic();
//}
void resetVariables()
{
score = 1;
delay = 3.0f;
n = 0;
exitFlag = exitFlagReset;
//public Audio a;
AudioSource audioSource;
getMusic m;
GetComponent<AudioSource>().spatialBlend = 0.0f;
GetComponent<AudioSource>().panStereo = 1;
//wait = 8.0f;
//specialWait = 5.0f;
counter = 5.0;
newCounter = 7.0;
score = 1;
audioSource = gameObject.GetComponent<AudioSource>();
audioSource.clip = GetComponent<AudioSource>().clip;
m = getMusic_Instance;
speedCounter = speedCounterReset;
isWorking = isWorkingReset;
}
}
Code is a bit hard to guess where your line 40 is as there are a lot of annoying newlines, but make sure to check whether ‘instance’ is null. Also, why do you do: instance = GameObject.FindObjectOfType<GetMusic>(); As you are making a singleton using instance = this; should be enough.
Also check whether you have attached a AudioSource to your gameobject, and use the [RequireComponent] attribute to force one to be available at all times: Unity - Scripting API: RequireComponent
Jogu
August 12, 2015, 8:30am
5
Timelog:
Code is a bit hard to guess where your line 40 is as there are a lot of annoying newlines, but make sure to check whether ‘instance’ is null. Also, why do you do: instance = GameObject.FindObjectOfType<GetMusic>(); As you are making a singleton using instance = this; should be enough.
Also check whether you have attached a AudioSource to your gameobject, and use the [RequireComponent] attribute to force one to be available at all times: http://docs.unity3d.com/ScriptReference/RequireComponent.html
I have edited the code so that it will be easy to find the line. Meanwhile, I will try what you said.
