Bouncy - Silverlight Version

Heres a Silverlight version of the game BOUNCY. I made just to get the feel of Silverlight, Blend and C#.

The logic and coding is almost the same with a bit of differences from Actionscript 3.0.

You can check out the BOUNCY - AS 3.0 Tutorial from my earlier post for comparison.

Silverlight Code :
Class : MainPage

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace Bouncy
{
 public partial class MainPage : UserControl
 {
  double G;
  double E;
  double epsilon;
  Ball ball;
  double rightWallX;
  double leftWallX;
  public int score;
  
  public MainPage()
  {
   // Required to initialize variables
   InitializeComponent();   
   init();
   CompositionTarget.Rendering += onEnterFrame;
  }
  
  void init(){
   this.G = 0.27;
   this.E = 0.65;
   this.epsilon = 0.5;
   ball = new Ball(this);
   Canvas.SetLeft(ball, 275);
   Canvas.SetTop(ball, 200);
   LayoutRoot.Children.Add(ball);
   score = 0;
   this.scoreTxt.Text = score + "";
  }
  
  void onEnterFrame(object sender, EventArgs e){
   //if(Math.Abs(ball.speedY)<0.01)
   // collision - ground
   if(Canvas.GetTop(ball)+ball.speedY > 300){
    if(score != 0){
     score = 0;
     this.scoreTxt.Text = score + "";
    }
    if(Math.Abs(ball.speedY)>this.epsilon){
     ball.speedY = -ball.speedY*E;
     // add friction when on ground
     ball.speedX *= 0.9;
    }
    else{
     ball.speedY=0;    
     //Canvas.SetTop(ball, 300);
    }    
   }
   else if(Canvas.GetTop(ball) < 299){
    ball.speedY += G;
   }
   
   // collision - right wall n left wall
   if(Canvas.GetLeft(ball) > 510){
    ball.speedX = -ball.speedX;
   }
   else if(Canvas.GetLeft(ball) < 40){
    ball.speedX = -ball.speedX;
   }
   
   /*if(ball.speedY != 0){
    ball.speedY += G;
   }*/
   if(ball.speedY == 0){
    // add friction when on ground
    ball.speedX *= 0.9;
   }
   Canvas.SetLeft(ball, Canvas.GetLeft(ball)+ball.speedX);
                        Canvas.SetTop(ball,Canvas.GetTop(ball)+ball.speedY);
  }
  
  public void increaseScore(){
   score++;
   scoreTxt.Text = score + "";
  }
 }
}

Class : Ball

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace Bouncy
{
 public partial class Ball : UserControl
 {
  
  public double speedX;
                public double speedY;
        
  MainPage par;
  
  public Ball(MainPage p)
  {
   // Required to initialize variables
   InitializeComponent();
   speedX = speedY = 0;
   par = p;
  }
  
  public void move(){
   // move
   Canvas.SetLeft(this,Canvas.GetLeft(this)+this.speedX);
   Canvas.SetTop(this,Canvas.GetTop(this)+this.speedY);
  }
  
  private void Ellipse_MouseLeftButtonDown(object sender,
                                    System.Windows.Input.MouseButtonEventArgs e)  
  {
   // TODO: Add event handler implementation here.
   // increase score
   par.increaseScore();
   speedY = -6;
   Random r = new Random();
   speedX = r.NextDouble() * 14 - 7;   
  }
 }
}