MIDI再生

using UdonSharp;  
using UnityEngine;  
using UnityEngine.UI;  
using VRC.SDK3.Midi;  
  
[UdonBehaviourSyncMode(BehaviourSyncMode.None)]  
public class LogoButton : UdonSharpBehaviour  
{  
    [SerializeField] private Transform[] grids;  
    [SerializeField] private VRCMidiPlayer player;  
    [SerializeField] private int[] channels;  
      
    private void Start()  
    {  
        // Disable Image components of all grid children  
        foreach (var grid in grids)  
        {  
            for (var i = 0; i < grid.childCount; i++)  
            {  
                var child = grid.GetChild(i);  
                var image = child.GetComponent<Image>();  
                image.enabled = false;  
            }  
        }  
  
        SendCustomEventDelayedSeconds(nameof(_PlayAudio), 1);  
    }  
  
    public void _PlayAudio()  
    {  
        player.Play();  
    }  
  
    public override void MidiNoteOn(int channel, int number, int velocity)  
    {  
        UpdateGridState(channel, number, true);  
        Debug.Log($"{channel} : {number}");  
    }  
  
    public override void MidiNoteOff(int channel, int number, int velocity)  
    {  
        UpdateGridState(channel, number, false);  
    }  
  
    private void UpdateGridState(int midiEventChannel, int midiEventNoteNumber, bool isEnabled)  
    {  
        // Find all grids that are mapped to the midi event's channel.  
        for (var gridIndex = 0; gridIndex < grids.Length; gridIndex++)  
        {  
            var gridChannel = channels[gridIndex];  
            if (midiEventChannel != gridChannel) continue;  
              
            // Enable/Disable image, quantized by chromatic 12 note scale.  
            var child = grids[gridIndex].GetChild(midiEventNoteNumber % 12);  
            var image = child.GetComponent<Image>();  
            image.enabled = isEnabled;  
        }  
    }  
}