Hello!
I made a game like this:

import fisica.*;

FWorld world;
FBox pifPaf;

void setup() {
size(800, 500);
smooth();

Fisica.init(this);

world = new FWorld();
world.setGravity(0, 300);


pifPaf = new FBox(150,40);
pifPaf.setPosition(250,500);
pifPaf.setRotation(radians(-90));
pifPaf.setStatic(true);
pifPaf.setFill(0);
pifPaf.setFriction(0);
world.add(pifPaf);

}

void draw() {
background(155);

if (random(1)<0.02)
{
FBlob b = new FBlob();
float s = random(30,40);
b.setAsCircle(random(400,750),0, s, 20);
b.setStroke(0);
b.setStrokeWeight(2);
b.setFill(255);
b.setFriction(0);
world.add(b);
}

world.step();
world.draw();
}

void keyPressed()

{
if( keyCode == LEFT)
pifPaf.setPosition (pifPaf.getX()-5,500);
if( keyCode == RIGHT)
pifPaf.setPosition ( pifPaf.getX()+5,500);

{
FCircle kula= new FCircle(30);
kula.setVelocity(1600,0);
kula.setDensity(1000);
kula.setFill(180);
kula.setPosition (pifPaf.getY(),500);
world.add(kula);

}

}

does anyone know how to make black rectangular shooting to up not to right???
Greetings