class Circle
{
float x;
float y;
int siz;
int track; //the track it travels in. Starting from 0 to work with array indexing nicely.
boolean live; //each circle may fire its ding only once in its little life

Circle(int xx, int yy, int s, int t)
{
x = xx;
y = yy;
siz = s;
track = t;
siz = s;
live = true;
}

void display(boolean ding)
{
if (ding) {
fill(#000000);
} else {
noFill();
}
stroke(0);
ellipse(x, y, siz, siz);
noStroke();
}

void ding()
{
int index = int(map(this.y, height, 0, 0, scaleArray.length - 1)); //remember higher y coords are lower numbers
index = constrain(index, 0, scaleArray.length - 1); // y values can be off the screen, array indexes dont tolerate this
Oscillator wave = (Oscillator)signalArray.get(track);
wave.setFreq(scaleArray[index]);
wave.setAmp(0.3);
if (!out.isEnabled(wave)) {
out.enableSignal(track);
}
}

}