Exodroid

As game programmer on this project, I gained experience using C# with Unity3D. Furthermore, I took an active part in developing the design and the production itself.

I participated in the project while writing my master thesis, therefore much of the discussion and conclusion is somewhat related to this project.

Official info and download page at dadiu.dk

Simple C# script to trigger theme music at certain points in the game:

using UnityEngine;
using System.Collections;
 
public enum ThemeFader
{
    FirstToSecond = 0,
    SecondToThird = 1
}
 
/// <summary>
/// Put this script on the triggerbox that has to change the theme music
/// </summary>
public class AudioThemeTrigger : MonoBehaviour
{
	// enable these controls in the editor
    public float fadeTime = 5.0f;
    public ThemeFader themeFader;
 
    private bool triggered = false;
    private GameObject player;
    private Transform AudioTheme1;
    private Transform AudioTheme2;
    private Transform AudioTheme3;
 
    void Start()
    {
        player = GameObject.FindGameObjectWithTag("Player");
        AudioTheme1 = Helper.getChildByName(player.transform, "AudioTheme1");
        AudioTheme2 = Helper.getChildByName(player.transform, "AudioTheme2");
        AudioTheme3 = Helper.getChildByName(player.transform, "AudioTheme3");
 
        switch (themeFader)
        {
            case ThemeFader.FirstToSecond:
                AudioTheme1.transform.audio.volume = 0.7f;
                AudioTheme2.transform.audio.volume = 0.0f;
                AudioTheme3.transform.audio.volume = 0.0f;
                break;
            case ThemeFader.SecondToThird:
                AudioTheme2.transform.audio.volume = 0.7f;
                AudioTheme3.transform.audio.volume = 0.0f;
                break;
            default:
                break;
        }
    }
 
    void Update()
    {
        if (triggered)
        {
            switch (themeFader)
            {
                case ThemeFader.FirstToSecond:
                    CrossfadeAudio(AudioTheme1,AudioTheme2);
                    break;
                case ThemeFader.SecondToThird:
                    CrossfadeAudio(AudioTheme2,AudioTheme3);
                    break;
                default:
                    break;
            }
        }
    }
 
    private void CrossfadeAudio(Transform t1, Transform t2)
    {
        if (t1.transform.audio.volume > t1.transform.audio.minVolume)
        {
            //fade out
            t1.transform.audio.volume -= t1.transform.audio.maxVolume * Time.deltaTime / fadeTime;
        }
        else
        {
            t1.transform.audio.volume = 0.0f;
            t1.transform.audio.Stop();
        }
        if (!t2.transform.audio.isPlaying)
        {
            //start the new sound if it is not allready running
            t2.transform.audio.Play();
 
        }
        if (t2.transform.audio.volume < t2.transform.audio.maxVolume)
        {
            //fade in
            t2.transform.audio.volume += t2.transform.audio.maxVolume * Time.deltaTime / fadeTime;
        }
        else if (t1.transform.audio.volume <= t1.transform.audio.minVolume) triggered = false;
    }
 
    void OnTriggerEnter(Collider collider)
    {
        if (collider.gameObject.tag == "Player")
        {
            triggered = true;
        }
    }
}

A little C# helper for some tedious tasks:

using UnityEngine;
using System.Collections;
using System;
using System.Collections.Generic;
 
public static class Helper
{
    static AudioClip lastClip;
 
    /// <summary>
    /// Get the first child transform with the speified name
    /// </summary>
    /// <param name="transform">Parent transform</param>
    /// <param name="name">The child transform.name to look for</param>
    /// <returns>Transform</returns>
    public static Transform getChildByName(Transform transform, string name)
    {
        for (int i = 0; i < transform.GetChildCount(); i++)
        {
            if (transform.GetChild(i).name == name) return transform.GetChild(i);
        }
        throw new Exception("Cound not find child " + name + " in " + transform.name);
    }
 
    // TODO: if there is more than one audio clip, don't return the same audio clip twice
    /// <summary>
    /// Returns a random audio clip from the specified array of AudioClips
    /// </summary>
    /// <param name="clips">Array of AudioClips</param>
    /// <returns>AudioClip</returns>
    public static AudioClip getRandomAudioClip(AudioClip[] clips)
    {
        if (clips != null)
        {
            // Create a list with available clips
            List<AudioClip> clipsToChoose = new List<AudioClip>(clips);
 
            // Remove the previous clip from the list if it is there
            if (lastClip != null)
            {
                for (int i = 0; i < clipsToChoose.Count; i++)
                {
                    if (clipsToChoose[i].name == lastClip.name)
                    {
                        clipsToChoose.RemoveAt(i);
                        break;
                    }
                }
            }
 
            if (clipsToChoose.Count > 0)
            {
                int randomNb = UnityEngine.Random.Range(0, clipsToChoose.Count);
                lastClip = clipsToChoose[randomNb];
                return clipsToChoose[randomNb];
            }
            else throw new Exception("At least one audioclip has to be passed");
        }
        else
        {
            throw new Exception("At least one audioclip has to be passed");
        }
    }
 
    public static float adjustVolumeToDistance(GameObject soundSource, float distanceToZeroVol)
    {
        GameObject player = GameObject.FindGameObjectWithTag("Player");
        //getting distance to camera
        float distance = Vector3.Distance(soundSource.transform.position, player.transform.position);
        //calculate newVolume
        float newVol = 1 - (distance / distanceToZeroVol);
        //scale according to maxVolume
        newVol *= soundSource.audio.maxVolume;
        //make sure volume is positive or zero
        if (newVol > 0.0f) soundSource.audio.volume = newVol;
        else newVol = 0.0f;
        return newVol;
    }
 
    public static float adjustVolumeToDistance(GameObject soundSource)
    {
        return adjustVolumeToDistance(soundSource, 1000.0f);
    }
 
    /// <summary>
    /// Sets layer for a given transform and for all its children recursively
    /// </summary>
    /// <param name="t">name of the transform</param>
    /// <param name="layer">new layer</param>
    public static void setLayer(Transform t, int layer)
    {
        t.gameObject.layer = layer;
        for (int i = 0; i < t.GetChildCount(); i++)
            setLayer(t.GetChild(i), layer);
    }
}