ballClass_begin

​

//DECLARE (incorporare array?)

Ball myBall1;

Ball myBall2;

Ball myBall3;

Ball myBall4;

Ball myBall5;

Ball myBall6;

​

Ball myBall7;

Ball myBall8;

Ball myBall9;

Ball myBall10;

Ball myBall11;

Ball myBall12;

​

float r1;

float r2;

float r3;

float r4;

float r5;

float r6;

float r7;

​

void setup() {

  size(600, 600);  

  smooth();

​

  r1 = random(0, 500);

  r2 = random(0, 500);

  r3 = random(0, 500);

  r4 = random(0, 500);

  r5 = random(0, 500);

  r6 = random(0, 500);

  r7 = random(0, 500);

​

  myBall1= new Ball(r1, r2); // INITIALISE to move

  myBall2= new Ball(r2, r3); 

  myBall3= new Ball(r3, r4); 

  myBall4= new Ball(r4, r5); 

  myBall5= new Ball(r5, r6);

  myBall6= new Ball(r6, r7);

​

  myBall7= new Ball(r1, r2); // INITIALISE to stay

  myBall8= new Ball(r2, r3); 

  myBall9= new Ball(r3, r4); 

  myBall10= new Ball(r4, r5); 

  myBall11= new Ball(r5, r6);

  myBall12= new Ball(r6, r7);

}

void draw() {

  background (#AD3D3D);

  noStroke();

​

  myBall1.run(); //CALL FUNCTIONALITY

  myBall2.run(); 

  myBall3.run();  

  myBall4.run(); 

  myBall5.run(); 

  myBall6.run();

​

  myBall7.stay(); //mark initial position with an empty ball 

  myBall8.stay(); 

  myBall9.stay();  

  myBall10.stay(); 

  myBall11.stay(); 

  myBall12.stay();

}

​

​

// myBall1.stay();

​

​

class Ball { 

​

  //GLOBAL VARIABLES (Location, Speed etc..)

​

  float x = 0;

  float y = 0;

  float speedX = 5;

  float speedY = 0.5;

​

  //CONSTRUCTOR (How do you build the class, what info do you need, operates just once)

​

  Ball(float _x, float _y) {

​

    x = _x; 

    y = _y;

  }

​

  //FUNCTIONS (Modularity) 

​

  void run() {

    display(); 

    move();

    bounce();

    vector();

  }

​

  void bounce() {

​

    if (x > width) {

      speedX = - speedX; //remember: could also be speedX = speedX * -1

    }

    if (x < 20) {

      speedX = - speedX;

    }

    if (y > (height-20)) {

      speedY = - speedY;

    }

    if (y < 20) {

      speedY = - speedY;

    }

  }

​

  void vector() {

    speedY += 0.2;  //force point down or up depending on the sign

  }

​

​

  void move() {

​

    x += speedX;

    y += speedY;

  }

​

  void display() {

​

    ellipse(x, y, 50, 50);

    fill(0);

  }

​

​

  void stay() { 

​

    ellipse(x, y, 20, 20);

    stroke(0);

    noFill();

  }

}

​

​

​