Smoy 9/10 OOP

BouncyBallOOP/Ball.pde

@@ -1,20 +1,41 @@
 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;
   color c;
+  float speed;
 
-//this is a constructor. you can have more than one constructor for a given class
-  Ball() {
-    diam = 200;
+  //this is a constructor. you can have more than one constructor for a given class
+  Ball(float tSpeed) {
+    diam = 100;
+    speed = tSpeed;
     loc = new PVector(random(diam, width-diam), random(diam, height-diam));
+    vel = PVector.random2D();
+    vel.mult(tSpeed);
     c = color(random(255), random(50), random(100, 255));
+    speed = 1;
   }
 
-//after declaring fields and setting up constructors, you can define your methods
+  //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);
+
+    //wrap the ball's position
+    if (loc.x >= width) {
+      loc.x = 0;
+    } else if (loc.x  <= 0) {
+      loc.x = width ;
+    }
+    if (loc.y >= height) {
+      loc.y = 0;
+    } else if (loc.y <= 0) {
+      loc.y = height ;
+    }
+  }
 }

BouncyBallOOP/BouncyBallOOP.pde

@@ -1,11 +1,16 @@
 Ball b;                //declare a new ball called b
+Ball c;
 
 void setup() {
-  size(1600, 1200);
-  b = new Ball();      //initialize b as a new object of the Ball class
+  size(800, 600);
+  b = new Ball(10);      //initialize b as a new object of the Ball class
+  c = new Ball(.9);
 }
 
 void draw() {
   background(0);
   b.display();         //call b's display() method
+  b.move();            //call b's move() method
+  c.display();
+  c.move();
 }