// Midi2Unity.cs - Script to visualise MIDI input from our PD patch.
// -----------------------------------------------------------------------------
// Copyright (c) 2020 Niall Moody
// 
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// of this software and associated documentation files (the "Software"), to deal
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// SOFTWARE.
// -----------------------------------------------------------------------------

using UnityEngine;

/// <summary>Script to visualise MIDI input from our PD patch.</summary>
/// 
///	<remarks>This script does 2 things:
///	
/// 1.) Toggles note playback when the player enters/exits the trigger volume.
/// 
/// 2.) Visualises incoming MIDI notes from our PD patch.</remarks>
public class Midi2Unity : MonoBehaviour
{
	/// Our PD patch.
	public LibPdInstance pdPatch;

	///	Our 12 note lights.
	public GameObject[] lights;

	///	This will get called for every note on/off message we receive from our patch.
	public void NoteReceived(int channel, int note, int velocity)
	{
		int wrappedNote = note % 12;

		for(int i=0;i<lights.Length;++i)
			lights[i].SetActive(false);

		if(lights.Length > wrappedNote)
		{
			lights[wrappedNote].SetActive(true);
		}
	}

	///	Toggle note playback when player enters trigger volume.
	private void OnTriggerEnter(Collider other)
	{
		pdPatch.SendBang("Toggle");
	}

	///	Toggle note playback when player exits trigger volume.
	private void OnTriggerExit(Collider other)
	{
		for(int i=0;i<lights.Length;++i)
			lights[i].SetActive(false);

		pdPatch.SendBang("Toggle");
	}
}