Master

BouncyBallOOP/Ball.pde

@@ -1,20 +1,54 @@
 class Ball {
- //declaring all information (fields) contained within the Ball class
+  //declaring all information (fields) contained within the Ball class
   PVector loc, vel;
-  int diam;
+  float diam;
   color c;
 
-//this is a constructor. you can have more than one constructor for a given class
+  //this is a constructor. 
   Ball() {
     diam = 200;
     loc = new PVector(random(diam, width-diam), random(diam, height-diam));
     c = color(random(255), random(50), random(100, 255));
+    vel = PVector.random2D();
+    vel.mult(20);
   }
-
-//after declaring fields and setting up constructors, you can define your methods
+  Ball(float tDiam) {
+    diam = tDiam;
+    loc = new PVector(random(diam, width-diam), random(diam, height-diam));
+    vel = PVector.random2D();
+    vel.mult(20);
+    c = color(0, random(50, 255), random(100, 255));
+  }
+  //after declaring fields and setting up constructors, you can define your methods
   void display() {
     fill(c);
     noStroke();
     ellipse(loc.x, loc.y, diam, diam);
   }
+  void move() {
+    loc.add(vel);
+  }
+  void bounce() {
+    if (loc.x > width || loc.x < 0) {
+      vel.x *= -1;
+    }
+    if (loc.y > height || loc.y < 0) {
+      vel.y *= -1;
+    }
+  }
+
+  void wrap() {
+    if (loc.x >width) {
+      loc.x=0;
+    }
+    if (loc.x <0) {
+      loc.x = width;
+    }
+    if (loc.y >height) {
+      loc.y=0;
+    }
+    if (loc.y<0) {
+      loc.y=height;
+    }
+  }
 }

BouncyBallOOP/BouncyBallOOP.pde

@@ -1,11 +1,20 @@
+int count =4;
 Ball b;                //declare a new ball called b
-
+Ball c;
+Ball[] balls = new Ball[count];
 void setup() {
-  size(1600, 1200);
-  b = new Ball();      //initialize b as a new object of the Ball class
+  size(800, 800);
+  for (int i=0; i<count; i++) {
+    balls[i] = new Ball(20);      //initialize b as a new object of the Ball class
+    balls[i] = new Ball(45);
+  }
 }
 
 void draw() {
   background(0);
-  b.display();         //call b's display() method
+  for (int i=0; i<count; i++) {
+    balls[i].display();         //call b's display() method
+    balls[i].move();    //Gives ball movement
+    balls[i].bounce();    //Balls do not fly off screen
+  }
 }