Unity中Vuforia Area Target场景Audio Source播放故障技术求助

Hey there! Let’s break down how to get your Audio Source working with Vuforia Area Targets step by step—since you’re new to this, I’ll keep things clear and actionable.

First: Get and Set Up DefaultTrackableEventHandler.cs #

You’re right that this script is key—it’s Vuforia’s built-in handler for tracking events, and it’s exactly what you need to trigger audio when your Area Target is detected. Here’s how to get it set up:

• If you haven’t already, you can find this script in the Vuforia Unity package. Navigate to Assets/Vuforia/Scripts/DefaultTrackableEventHandler.cs (it’s included with the Vuforia SDK when you import it into Unity).
• Drag and drop this script onto your Area Target GameObject in the Hierarchy. Alternatively, you can create a custom script that inherits from it (which I’ll show next, since it’s more flexible).

Second: Add Audio Playback Logic to the Tracking Handler #

The default script only handles basic tracking state changes—we need to extend it to control your Audio Source. Create a new C# script (let’s call it AreaTargetAudioHandler.cs) with this code:

using UnityEngine;
using Vuforia;

public class AreaTargetAudioHandler : DefaultTrackableEventHandler
{
    // Assign your Audio Source in the Inspector
    [SerializeField] private AudioSource targetAudioSource;

    protected override void OnTrackingFound()
    {
        // Call the base tracking logic first
        base.OnTrackingFound();
        
        // Play audio when the Area Target is detected
        if (targetAudioSource != null && !targetAudioSource.isPlaying)
        {
            targetAudioSource.Play();
        }
    }

    protected override void OnTrackingLost()
    {
        // Call the base tracking logic first
        base.OnTrackingLost();
        
        // Pause audio when tracking is lost
        if (targetAudioSource != null && targetAudioSource.isPlaying)
        {
            targetAudioSource.Pause();
        }
    }
}

• Replace the default DefaultTrackableEventHandler on your Area Target with this new script.
• In the Inspector, drag your Audio Source component (attached to either the Area Target or another GameObject) into the Target Audio Source field.
• Make sure your Audio Source has an audio clip assigned, and uncheck "Play On Awake"—we want to trigger playback only when the target is tracked.

Quick Checklist to Avoid Common Issues #

• Double-check that your Area Target database is imported and enabled in the Vuforia Configuration (Window > Vuforia Configuration).
• Verify your Audio Source isn’t muted, has its volume turned up, and the clip is set to loop if needed.
• When testing, ensure your device can see the Area Target clearly—you can check the Scene view in Unity to confirm when tracking is active (the Area Target will become visible once detected).

内容的提问来源于stack exchange，提问作者skynard