How to play a sound by C# that is linked to the object with AudioSource?

Question

I trying to play a sound while the player is ontriggerenter. The sound is linked to the object with a AudioSource component. But notting happened.

using UnityEngine;
using System;
using System.Collections;

public class FloatBehavior : MonoBehaviour {

    Vector2 floatY;
    float originalY;

    public float floatStrength = 1;

    AudioSource triggerAudio;                                    // Reference to the AudioSource component.

    void Start () {
        this.originalY = this.transform.position.y;
        triggerAudio = GetComponent <AudioSource> ();
        Debug.Log (triggerAudio);
    }

    void Update () {
        transform.position = new Vector3(transform.position.x,
                                         originalY + ((float)Math.Sin(Time.time) * floatStrength),
                                         transform.position.z);
    }

    // OnTriggerEnter 2D
    void OnTriggerEnter2D(Collider2D other) {

        // If gameObject comes in contact with player
        if (other.gameObject.tag == "Player") {
            // Play the hurt sound effect.
            triggerAudio.Play ();
        }


    }



}

Trying to debug, but the triggerAudio object will retrieve: woodstump 3 (UnityEngine.AudioSource) UnityEngine.Debug:Log(Object) FloatBehavior:Start() (at Assets/C#/Objects/FloatBehavior.cs:17).

What am I missing in my script? Should I use AudioClip also?

Answer 1

Well the first step is to verify that your OnTriggerEnter2D function is getting called. It's easy enough to put a debug log in there with who it collided to.

An audio source is just that -- it's a "source" audio. It contains important things like positioning and so forth. On the audio source is a field for audio clip. Assuming you have a clip in there already (e.g. this is on a prefab and you can edit it in the inspector), then calling Play should play it.

Check the audio source to see that it's not firing on startup, that might be another issue.

Answer 2

check that audio listener is atached at the camera, and the camera is close enough to the audio source position.

Answer 3

You can put the Audio file into the Resources folder and load it from there.

...

public class FloatBehavior : MonoBehaviour {
    ...

    AudioSource triggerAudio;                 // Reference to the AudioSource component.

    void Start () 
    {
        ...
        triggerAudio= this.gameObject.AddComponent<AudioSource>();
    }

    void Update () 
    {
        ...
    }

    void OnTriggerEnter2D(Collider2D other) 
    { 
            ...                
            AudioClip ac = Resources.Load("myFile") as AudioClip;

            triggerAudio.PlayOneShot(ac, 1f);
    }

}

Hope it helps!

Answer 4

gameObject.GetComponent‹AudioSource›().Play();