// MUSIC-220A Homework 4 - Jingjie Zhang
// Ping-Pong Delay with Random Feedback gain

adc.chan(0) => Gain Mix0 => NRev R0 => dac.chan(0);
adc.chan(0) => Gain Mix1 => NRev R1 => dac.chan(1);
adc.chan(0) => DelayA Dly0 => Gain Feedback0 => DelayA Dly1 => Mix1;
adc.chan(0) => Dly1 => Gain Feedback1 => Dly0 => Mix0;

1000::ms => Dly0.max => Dly1.max;
540::ms => Dly0.delay;
270::ms => Dly1.delay;

0.3 => float FdbkGain;
FdbkGain => Feedback0.gain => Feedback1.gain;

0.01 => R0.mix => R1.mix;

2 => Mix0.gain => Mix1.gain;

Random Ran;
Ran.set(0.2, 0.7);

540::ms => dur UpdateTime;

// control loop
while( true )
{
    Ran.tick() => float FdbkGain;
    FdbkGain => Feedback0.gain => Feedback1.gain;
    UpdateTime => now;
}

class Random
{
    float _l, _h;
    false => int isSet;
    fun void set( float l, float h )
    {
        l => _l;
        h => _h;
        true => isSet;
    }
    fun float tick( )
    {
        if (!isSet) 
        {
            <<<"Periodic not set, quitting">>>;
            me.exit();
        }
        return Std.rand2f(_l, _h);
    }
}