TO SQUASH: menu callbacks

Assets/Scripts/MainMenu/MenuCallbackHolder.cs

@@ -1,11 +1,20 @@
 using UnityEngine;
 
-public class MenuCallbackHolder
+public class MenuCallbackHolder: MonoBehaviour
 {
     private System.Action[] callbacks;
 
-    public MenuCallbackHolder()
+    private AudioSource audioSource;
+
+    private AudioClip zapAudioClip;
+
+    private static readonly string zapAudioClipPath = "Audio/1496_YummyStorm";
+
+    void Start()
     {
+        audioSource = GetComponent<AudioSource>();
+        zapAudioClip = Resources.Load<AudioClip>(zapAudioClipPath);
+
         callbacks = new System.Action[]
         {
             PlayButtonCallback,
@@ -38,25 +47,28 @@ public class MenuCallbackHolder
     public void InstruccionsButtonCallback()
     {
         Debug.Log("Instructions button pressed");
-        // UnityEngine.SceneManagement.SceneManager.LoadScene("Instructions");
+        // TODO: Implement instructions scene.
     }
 
     public void SetupButtonCallback()
     {
         Debug.Log("Setup button pressed");
-        // UnityEngine.SceneManagement.SceneManager.LoadScene("Setup");
+        // TODO: Implement setup dialog.
     }
 
     public void ZapButtonCallback()
     {
         Debug.Log("Zap Scores button pressed");
-        // UnityEngine.SceneManagement.SceneManager.LoadScene("Zap");
+        audioSource.PlayOneShot(zapAudioClip);
+
+        // TODO: Add a confirmation dialog before resetting scores
+        GameSetup.ZapScores();
     }
 
     public void AboutButtonCallback()
     {
         Debug.Log("About button pressed");
-        // UnityEngine.SceneManagement.SceneManager.LoadScene("About");
+        // TODO: Implement about dialog.
     }
 
     public void QuitButtonCallback()