MidiReader.cs

MidiReader.cs

using UnityEngine;
using System.Collections;
using NAudio.Midi;
using System.IO;
using System.Linq;

public class MidiReader : MonoBehaviour {

	public MidiFile midi;

	public float ticks;
	public float offset;

	// Use this for initialization
	void Start () {
		//Loading midi file "mainSong.bytes" from resources folder
    		//Its a midi file, extension has been changed to .bytes manually
		TextAsset asset = Resources.Load("mainSong") as TextAsset;
		Stream s = new MemoryStream(asset.bytes);
   		//Read the file
		midi = new MidiFile(s, true);
    		//Ticks needed for timing calculations
		ticks = midi.DeltaTicksPerQuarterNote;
	}

	public void StartPlayback()
	{
    		//9 is the number of the track we are reading notes from
    		//you'll have to experiment with that, i cant remember why i chose 9 here
		foreach (MidiEvent note in midi.Events[9])
		{
      			//If its the start of the note event
			if (note.CommandCode == MidiCommandCode.NoteOn)
			{
        			//Cast to note event and process it
				NoteOnEvent noe = (NoteOnEvent)note;
				NoteEvent(noe);
			}
		}
	}

	public void NoteEvent(NoteOnEvent noe)
	{
    		//The bpm(tempo) of the track
    		float bpm = 150;
    
    		//Time until the start of the note in seconds
		float time = (60 * noe.AbsoluteTime) / (bpm * ticks);
    
		//The number (key) of the note. Heres a useful chart of number-to-note translation:
		//http://www.electronics.dit.ie/staff/tscarff/Music_technology/midi/midi_note_numbers_for_octaves.htm
		int noteNumber = noe.NoteNumber;

		//Start coroutine for each note at the start of the playback
		//Really awful way to do stuff, but its simple
		StartCoroutine(CreateAction(time, noteNumber, noe.NoteLength));
	}

	IEnumerator CreateAction(float t, int noteNumber, float length)
	{
    		//Wait for the start of the note
		yield return new WaitForSeconds(t);
		//The note is about to play, do your stuff here
    		Debug.Log("Playing note: "+noteNumber);
	}


}

Hey CustomPhase,
can you provide the NAudio.dll file for this.
Thanks a lot!