// class: envelope generator
class EnvGen
{
    200.0 => float _rampTime;
    Step _s => Envelope _e => blackhole;
    _rampTime::ms => _e.duration;
    
    fun void setRampTime(float rampTime) {
        rampTime => _rampTime;
    }
    
    fun void target(float val) {
        _e.target(val);
    }
    
    fun float getSample() {
        return _e.last();
    }
}

// class: sound player
class Player
{
    SinOsc _s => NRev _rev => Envelope en => dac;
    _rev.mix(0.05);
    EnvGen _amp, _freq;
    
    fun void setAmp(float amp) {
        _amp.target(amp);
    }
    
    fun void setFreq(float freq) {
        _freq.target(freq);
    }
    
    fun void setRampTime(float rampTime) {
        _amp.setRampTime(rampTime);
        _freq.setRampTime(rampTime);
    }

    fun void _run() {
        while(true) {
            _amp.getSample() => _s.gain;
            _freq.getSample() => _s.freq;
            1::samp => now;
        }
    } spork ~ _run(); // run immediately
}

// -----------------------------------------------------
"/Users/ckaymaz/Desktop/music220a/hwexamples/sf-temperature.dat" => string mydata;

DataReader dr;
dr.load(mydata);
if (!dr.isValid()) me.exit();

Player ply;
200.0 => float rampTime;
ply.setRampTime(rampTime);

0 => int i; 
[ 40, 50, 60, 70] @=> int mult[];

for (0 => int j; j < 0; ++j)
{
    SinOsc s => Envelope e => dac;
    700 => s.freq;
    e.keyOn();
    500::ms=>now;
    e.keyOff();
     300::ms => now;
}

while(dr.next()) {
   dr.getNormalized() => float w;
   ply.setAmp(10);
   ply.setFreq(Std.mtof(60.0 + w * mult[i]));
   i++;
   if (i == 4)
       0 => i;
    (ply.en).keyOn();
  100::ms => now;
  (ply.en).keyOff();
  100::ms => now; 
}