How to make a class of this?

susabgp

Hi guys, i'm trying to make a new ball launched after mousePressed, keeping the balls in the secren. I've got this so far, but for some reason it's not working, i was wondering if you could help me.

thanks

class Ball {

PVector location;
PVector velocity;
PVector acceleration;
PVector gravity;
PVector lance;
float friction ;
int depth;

  Ball(){
  depth = 3000;
  smooth();
  gravity = new PVector(0, 0.98, 0);
  location = new PVector(width/2, height/2, -4000);
  velocity = new PVector(0, 10, -30);
  lance = new PVector(0, 0, 0);
  friction = 1.0; //0.98;
  }


  void update(){

  velocity.add(lance);
  lance = new PVector(0, 0, 0);
  velocity.add(gravity);
  velocity.mult(friction);
  location.add(velocity);
  }

  void display(){

  noStroke();
  fill(255);
  lights();
  translate(location.x, location.y, location.z);
  sphere(35);



   if ((location.z < 40)) {
    friction = 0.76;
    gravity = new PVector(0, 0, 0);
  } else {
    friction = 1.0;
    gravity = new PVector(0, 0.98, 0);
  }

}
}



Ball b;


void setup(){

  size(800, 800, P3D);
  b = new Ball();

}


void draw(){
  background(0);
  noStroke();
  fill(0);
  rect(0, 0, width, height);

 if (mousePressed) {
    location = new PVector(mouseX, mouseY, 300);
    lance = new PVector (0, -20, -17);
    velocity = new PVector(0, 0, 0);
  }

}

Ater

You want many objects out of your class? Use Collections! ArrayList is the simple one.

ArrayList<Ball> balls = new ArrayList<Ball>(); // create arraylist

in your draw:

for (Ball b: balls){
b.update();
b.display();
}

in your mousePressed: balls.add(new Ball());

Something like this, yeah.