Getting the play positions of held notes

[benosterhouse]

Hi,

I saw David Healey's video on using timers to get note held, and was intrigued: https://www.youtube.com/watch?v=hVF2vkmrpME

I've hit a dead end while using timers to get the play positions of held notes though.

Here's the code I ended up with:

// onInit
const var timer = [];
const var eventPlayPos = [];

function onNoteOn()
{   
    Message.ignoreEvent(true);
    
    var eventId = Synth.playNote(Message.getNoteNumber(), 64);
    timer[eventId] = Engine.createTimerObject();
    eventPlayPos[eventId] = 0;
    timer[eventId].setTimerCallback(function(){
        //Console.print("note held");
        
        // this of course only gets the play position at the most recent eventId. It would be nice if eventId could be local to this function. 
        // You can only define local variables in an inline function or a callback though, and if you define a local variable outside of this function, it can't see it here.
        Console.print(eventPlayPos[eventId]);
        eventPlayPos[eventId]++;
    });
    timer[eventId].startTimer(((60/hostBpm) * 1000) / 12);
}

function onNoteOff()
{
    var artificialEventId = Message.getEventId()+1; // this doesn't seem like a good idea...
    timer[artificialEventId].stopTimer();
}

[benosterhouse]

I should give more context as well:

One of the reasons I'm trying to do this is for legato.
I'd like to make it so when you play a legato note, it plays the sample from wherever you were in the previous one.

Kontakt's Unisono - Portamento script has an option to do this if you set the Mono Mode to Legato. It's quite handy!

[benosterhouse]

Ok, to answer my own question

// onInit
const timerInterval = 0.05;
Synth.startTimer(timerInterval);
const sampleLength = (60 / 110) * 16;
var keyDown = Engine.createMidiList();
var legatoPlayPos = 0;

function onNoteOn()
{ 
    keyDown.setValue(Message.getNoteNumber(), 1);
    if (keyDown.getValueAmount(1) == 1) {
        Console.print("first note played");
        legatoPlayPos = 0;
    };
};

function onNoteOff()
{
    keyDown.setValue(Message.getNoteNumber(), 0);
};

function onTimer()
{
    if (keyDown.getValueAmount(1) >= 1) {
        normalizedIntensity = (legatoPlayPos * timerInterval) / sampleLength;
        // set the intensity of sample start constants here
        legatoPlayPos++;
    };
};