How to get event ids for artificial events?

[benosterhouse]

This should record as many event ids per key as needed --I didn't set a max number.

Here's what I got!

function onNoteOn()
{     
    Message.ignoreEvent(true);
    
    note = Message.getNoteNumber();
    if (keyDown.getValue(note) == 1)
        keyVoiceCount[note]++;
        
    g_group_allows[G_START] = 1;
    eventIds[note][keyVoiceCount[note]] = Synth.playNote(note, 64);
    eventTimeStamp[note][keyVoiceCount[note]] = Engine.getUptime();
    keyDown.setValue(note, 1);
}

function onNoteOff()
{   
    if (pedal == 0) 
    {
        keyDown.setValue(Message.getNoteNumber(), 0);
        note = Message.getNoteNumber();
        for (v = 0; v <= keyVoiceCount[note]; v++)
        {
            Synth.noteOffByEventId(eventIds[note][v]);
            if (delayedEventIds[note][v])
            {
                Synth.noteOffByEventId(delayedEventIds[note][v]);
                delayedEventIds[note][v] = 0;
            };
            eventTimeStamp[note][v] = 0;
        };
        keyVoiceCount[note] = 0;
    };
}
 
function onTimer()
{
    for (n = 0; n < 128; n++)
    {
        for (v = 0; v <= keyVoiceCount[n]; v++)
        {
            if (eventTimeStamp[n][v]) 
            {
                playPos = (Engine.getUptime() - eventTimeStamp[n][v]) * 1000;
                playPos = Engine.getQuarterBeatsForMilliSeconds(playPos);
                if (playPos > 4 && !delayedEventIds[n][v])
                {
                    g_group_allows[G_START] = 1;
                    delayedEventIds[n][v] = Synth.playNote(n, 64);
                };
            };
        };  
    };
}
 
function onController()
{
    if (Message.getControllerNumber() == 64) 
    {
        if (Message.getControllerValue() > 5) 
        {
            pedal = 1;
            //Console.print("pedal down");
        } else {
            pedal = 0;
            for (n = 0; n < 128; n++)
            {
                if (Synth.isKeyDown(n) == 0 && keyDown.getValue(n) == 1)
                {
                    keyDown.setValue(n, 0);
                    for (v = 0; v <= keyVoiceCount[n]; v++)
                    {   
                        Synth.noteOffByEventId(eventIds[n][v]);
                        eventIds[n][v] = 0;
                        Synth.noteOffByEventId(delayedEventIds[n][v]);
                        delayedEventIds[n][v] = 0;
                        eventTimeStamp[n][v] = 0;
                    };
                    keyVoiceCount[n] = 0;
                };
            };
        };
    };
}
 

So basically now you can have multiple parallel sequences of artificial events on the same key, which are note off'd correctly by the pedal.

Before, I did this by using Synth.addNote() to schedule the sequence of artificial events, but I was running into some problems there.

This is with Retrigger set to "Do nothing"

Man, this was a lot of work! Maybe I should have just done the "Kill Duplicate" option and just NOT allowed overlapping swells on the same key haha :face_with_tongue:

[d.healey]

@benosterhouse

Maybe I should have just done the "Kill Duplicate" option and just NOT allowed overlapping swells on the same key haha

Looks like you're having fun though :)

[benosterhouse]

Yep, I'm learning a lot :)

[Christoph Hart]

Yep, I'm learning a lot

Make sure you use the reserve function for all those arrays to avoid allocating items in the MIDI callbacks:

https://docs.hise.audio/scripting/scripting-api/array/index.html#reserve

[d.healey]

@Christoph-Hart Would an array of MIDI lists be more efficient?

[benosterhouse]

For a multi-dimensional array, would reserve make sense used this way?

delayedEventIds.reserve(128); // note slots
delayedEventIds[n].reserve(16); // reserve 16 voices per note slot
delayedEventIds[n][v] = Synth.playNote(n, 64);

[Christoph Hart]

Yes. You might need to initialise the element at delayedEventIds[n]
as array before calling reserve, but then it should work.

@d-healey the efficiency of the MIDI list gets interesting as soon as it helps you avoid writing for loops, so

• searching for an item
• clearing all items

It will speed up things a bit.

The nested for loop in this example will most likely be the bottleneck, so I would start optimizing there on a higher level though...

[benosterhouse]

Cool, yep it gets initialized in the onInit