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Public Class Game
Inherits Microsoft.Xna.Framework.Game
'Fields in our game graphic manager etc'
Dim graphics As GraphicsDeviceManager
'
Dim font1 As SpriteFont
Dim msg As String
'
Dim spriteBatch As SpriteBatch
'
'Texture that we will render'
Private mTexture As Texture2D
'Set the coordinates to draw the sprite at'
Private spritePos As Vector2 = Vector2.Zero

Public Sub New()
graphics = New GraphicsDeviceManager(Me)
'graphics.ToggleFullScreen()

End Sub

Protected Overrides Sub Initialize()
'TODO: Add your initialization logic here'
MyBase.Initialize()
msg = "hello world"
End Sub
Protected Overrides Sub LoadContent()
' TODO: use this.Content to load your game content here'
MyBase.LoadContent()
' Create a new SpriteBatch, which can be used to draw textures.'
spriteBatch = New SpriteBatch(GraphicsDevice)
'Loading the texture'
mTexture = Content.Load(Of Texture2D)("bille")
'lets create a font
font1 = Content.Load(Of SpriteFont)("myfont")

End Sub
Protected Overrides Sub UnloadContent()
MyBase.UnloadContent()
'TODO: Unload any non ContentManager content here'
End Sub
Protected Overrides Sub Update(ByVal gameTime As Microsoft.Xna.Framework.GameTime)
'Allows the game to exit'
If GamePad.GetState(PlayerIndex.One).Buttons.Back = ButtonState.Pressed Then
Me.Exit()
End If
'TODO: Add your update logic here'

updateinput(gameTime)

MyBase.Update(gameTime)

End Sub
Protected Overrides Sub Draw(ByVal gameTime As Microsoft.Xna.Framework.GameTime)
GraphicsDevice.Clear(Color.CornflowerBlue)
'TODO: Add your drawing code here'
'Draw the sprite'
spriteBatch.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend)
spriteBatch.DrawString(font1, msg, New Vector2(20.0F, 20.0F), Color.White)
spriteBatch.Draw(mTexture, spritePos, Color.White)
spriteBatch.End()
MyBase.Draw(gameTime)
End Sub

Private Sub updateinput(ByVal gameTime As GameTime)
Dim newState As KeyboardState
newState = Keyboard.GetState

If (newState.IsKeyDown(Keys.Right)) Then
spritePos.X = spritePos.X + 10
msg = "right " & spritePos.X & "," & spritePos.Y
End If

If (newState.IsKeyDown(Keys.Left)) Then
spritePos.X = spritePos.X - 10
msg = "left " & spritePos.X & "," & spritePos.Y
End If

If (newState.IsKeyDown(Keys.Up)) Then
spritePos.Y = spritePos.Y - 10
msg = "up " & spritePos.X & "," & spritePos.Y
End If

Public Class Game
Inherits Microsoft.Xna.Framework.Game
'Fields in our game graphic manager etc'
Dim graphics As GraphicsDeviceManager
Dim spriteBatch As SpriteBatch
'
'Texture that we will render'
Private mTexture As Texture2D
'Set the coordinates to draw the sprite at'
Private spritePos As Vector2 = Vector2.Zero
'X and Y speed of the sprite'
Private XSpeed As Single = 80
Private YSpeed As Single = 120
'Vector2 used for the speed of the sprite'
Private spriteSpeed As New Vector2(XSpeed, YSpeed)

Public Sub New()
graphics = New GraphicsDeviceManager(Me)
End Sub

Protected Overrides Sub Initialize()
MyBase.Initialize()
End Sub

Protected Overrides Sub LoadContent()
MyBase.LoadContent()
' Create a new SpriteBatch, which can be used to draw textures.'
spriteBatch = New SpriteBatch(GraphicsDevice)
'
'Load the texture'
'We are using Stream , not a content (xnb format)
Dim textureStream As System.IO.Stream = New System.IO.StreamReader(Application.StartupPath + "\bille_bleu1.png").BaseStream
'Loading the texture'
mTexture = Texture2D.FromStream(GraphicsDevice, textureStream)
End Sub

Protected Overrides Sub UnloadContent()
MyBase.UnloadContent()
End Sub

Protected Overrides Sub Update(ByVal gameTime As Microsoft.Xna.Framework.GameTime)
'Allows the game to exit'
Dim newState As KeyboardState = Keyboard.GetState
If newState.IsKeyDown(Keys.Q) Then Application.Exit()
'The method that will update our sprite position'
UpdateSprite(gameTime)
MyBase.Update(gameTime)
End Sub

Protected Overrides Sub Draw(ByVal gameTime As Microsoft.Xna.Framework.GameTime)
GraphicsDevice.Clear(Color.CornflowerBlue)
'Draw the sprite'
spriteBatch.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend)
spriteBatch.Draw(mTexture, spritePos, Color.White)
spriteBatch.End()
MyBase.Draw(gameTime)
End Sub

Private Sub UpdateSprite(ByVal gameTime As GameTime)
'The function move the sprite and check if its on the limits of the screen so it can bounce back'
Dim intMaxX As Integer
Dim intMinX As Integer = 0
Dim intMaxY As Integer
Dim intMinY As Integer = 0

'move the sprite by speed scaled by elapsed time'
spritePos += spriteSpeed * CSng(gameTime.ElapsedGameTime.TotalSeconds)
'Get the max. X and Y coordinates'
intMaxX = graphics.GraphicsDevice.Viewport.Width - mTexture.Width
intMaxY = graphics.GraphicsDevice.Viewport.Height - mTexture.Height
'Check the sprite if its at some of the edges of the screen and then reverce the speed of the sprite'
If spritePos.X > intMaxX Then
'Check if the sprite is at the maximum X coordinates of the screen if so reverse the speed'
spriteSpeed.X *= -1
spritePos.X = intMaxX

ElseIf spritePos.X < intMinX Then 'Check if the sprite is at the minimum X coordinates of the scree and reverse the speed' spriteSpeed.X *= -1 spritePos.X = intMinX End If If spritePos.Y > intMaxY Then
'Check if the sprite is at the maximum Y coordinates of the screen if so reverse the speed'
spriteSpeed.Y *= -1
spritePos.Y = intMaxY