1.
Initialize LoadContent
Update
Draw

2.
interface ISprite
{
void Reset(SamplerState game);
void Draw(SmudgeGame game);
void Update(SmudgeGame game);
}

3.
Texture2D smudgeTexture = Content.Load<Texture2D>("Smudge");
smudge = new Sprite(this, smudgeTexture, Vector2.Zero,
Color.Red, 20, 0);

4.
public virtual void Draw(SmudgeGame game)
{
game.spriteBatch.Draw(
spriteTexture, // texture of sprite
spritePosition, // vector position on screen
null, // source rectangle in texture (all of it)
spriteColor, // colour of the light
spriteRotation, // rotation – in radians
spriteOrigin, // centre of sprite – position and rotation
spriteScale, // scale – scaled to fit
SpriteEffects.None,
1); // draw everything at the same depth
}

5.
public virtual void Draw(SmudgeGame game)
{
game.spriteBatch.Draw(
spriteTexture, // texture of sprite
spritePosition, // vector position on screen
null, // source rectangle in texture (all of it)
spriteColor, // colour of the light
spriteRotation, // rotation – in radians
spriteOrigin, // centre of sprite – position and rotation
spriteScale, // scale – scaled to fit
SpriteEffects.None,
1); // draw everything at the same depth
}

6.
public virtual void Update(SmudgeGame game)
{
}

7.
Demo 1

8.
List<ISprite> gameSprites = new List<ISprite>();

9.
foreach (ISprite sprite in gameSprites)
sprite.Draw(this);

10.
protected override void Initialize()
{
TouchPanel.EnabledGestures = GestureType.Tap |
GestureType.FreeDrag;
base.Initialize();
}

11.
while (TouchPanel.IsGestureAvailable)
{
GestureSample gesture = TouchPanel.ReadGesture();
gameSprites.Add( new Sprite(this, smudgeTexture,
gesture.Position, Color.Red, 20,0));
}

12.
Demo 2

13.
class GrowingSprite : Sprite, Isprite
{
float spriteGrowSpeed = 0.05f;
public override void Update(SmudgeGame game)
{
spriteScale += spriteGrowSpeed;
base.Update(game);
}
}

14.
Demo 3

15.
Random colorRand = new Random();
Color randomColor()
{
int r = colorRand.Next(256);
int g = colorRand.Next(256);
int b = colorRand.Next(256);
return Color.FromNonPremultiplied(r, g, b, 255);
}

16.
Demo 4

17.
while (TouchPanel.IsGestureAvailable) {
GestureSample gesture = TouchPanel.ReadGesture();
if (gameSprites.Count > smudgesLength)
gameSprites.RemoveAt(0);
gameSprites.Add(new GrowingSprite(this, smudgeTexture,
gesture.Position, randomColor(), 20, 0));
}

18.
Demo 5

19.
Demo 6

20.
Demo 7

21.
<Deployment xmlns=
"http://schemas.microsoft.com/client/2007/deployment"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
EntryPointAssembly="WindowsPhonePuzzle"
EntryPointType="WindowsPhonePuzzle.App"
RuntimeVersion="3.0.40624.0">
<Deployment.Parts>
<AssemblyPart x:Name="WindowsPhonePuzzle"
Source="WindowsPhonePuzzle.dll" />
</Deployment.Parts>
</Deployment>

22.
<Capabilities>
<Capability Name="ID_CAP_LOCATION"/>
<Capability Name="ID_CAP_MEDIALIB"/>
<Capability Name="ID_CAP_PHONEDIALER"/>
<Capability Name="ID_CAP_PUSH_NOTIFICATION"/>
<Capability Name="ID_CAP_SENSORS"/>
<Capability Name="ID_CAP_WEBBROWSERCOMPONENT"/>
<Capability Name="ID_CAP_ISV_CAMERA"/>
<Capability Name="ID_CAP_CONTACTS"/>
<Capability Name="ID_CAP_APPOINTMENTS"/>
</Capabilities>

23.
<App xmlns=""
ProductID="{eb43b2c2-b7e9-4e5c-8aea-8047eb5e335f}"
Title="FunkyCamera" RuntimeType="Silverlight"
Version="1.0.0.0" Genre="apps.normal"
Author="FunkyCamera author"
Description="Sample description"
Publisher="FunkyCamera">

24.
http://go.microsoft.com/?linkid=9730558

25.
57

26.
using Microsoft.Phone.Marketplace;
LicenseInformation info = new LicenseInformation();
if ( info.IsTrial() )
{
// running in trial mode
}

27.
67

28.
http://www.robmiles.com
Twitter @RobMiles

29.
http://aka.ms/mbl-phone/start
http://aka.ms/mbl-phone/tools
http://aka.ms/mbl-phone/mango
http://aka.ms/mbl-phone/register