HI, I'm learning now, so perhaps this is a dull question. Anyway I was looking for some nice responsive creature done in processing and found this example in the ALPHA forum:

http://www.flight404.com/p5/tentacles_2/

I already transformed all the obvious syntax changes in order to run it in vers 0124 but there´s something I don´t get(This is just the first part of the transformed code - please check if needed the the complete one of the link):
import pitaru.sonia_v2_9.*;

// applet size variables
int xSize           = 600;
int ySize           = 350;
int xMid            = xSize/2;
int yMid            = ySize/2;

int frameRate = 30;

int counter = 0;

Camera camera;
Sound sound;
SpikeBall spikeBall;

boolean micInput = true;

void setup(){
 size(xSize, ySize, P3D);
 //lights();
 //smooth();
 frameRate(frameRate);
 ellipseMode(CENTER);
 colorMode(HSB,255);

 Sonia.start(this);

 // create camera (distance, lensAngle)
 camera = new Camera(37.0, 30.0);
 
 // create sound (sampleName, bands, history, speed, degrade)
 sound = new Sound("none", 512, 300, 10, 1.02);
 if (micInput){
   LiveInput.start(sound.bands);
   LiveInput.useEqualizer(true);
   LiveInput.useEnvelope(true,1.5);
 }
 
 // create spikeBall (numSpikes, spikeLength)
 spikeBall = new SpikeBall(64, 256);
 
for (int i=0; i<2; i++){
   g.lightKind[i] = SPECULAR;
 }
}

void draw(){
 background(175,100,35);
 doLights();
 sound.exist();
 camera.exist();
 spikeBall.exist();

 counter ++;

 delay(10);
}


void doLights(){
 lights();
 lightSpecular(204, 204, 204);
 for (int i=0; i<2; i++){
   g.lightX[i] = 0.5 * (i%2 - .5);
   g.lightY[i] = 0.25 * i;
   g.lightZ[i] = .5 + i;

   g.lightR[i] = 0.1;
   g.lightG[i] = i/3.0;
   g.lightB[i] = 0.0;
 }
}

What kind of class or function is that g? It doesn't appear in the code and is the only error I get...if I comment those lines, the program runs but off course there are no lights. In the FAQ and Reference section there's nothing about lights so...Help?
thx,