Arrow key (control)

I was thinking of making a game and the only thing I am having trouble with controls.

Edit: New Question: How can i make picturebox1 stop before it goes out of the form?

 

what you mean with stop?

 

like so it can't move in that direction anymore

 

if onkeydown(sidecurser) = true and picturebox.locationofside = sideofform
msgbox("Sorry, no no movy there. ")
else picturebox.top -20 'Or whatever it is to move picture boxes. I've not 'done anything with them in a looong time
end if


Obviously, that's not the right code P), but I'm pretty sure that's the right sort of logic used to stop an image from going of screen. So, basically, when the user presses a key to move, it checks where the image is as well. If the image is touching the side of the form (or a predefined area) it can't move. Else, it moves just like normal.

Of course, I could be wrong. The only things I've done like this is a simple shooting game with an alien spaceship moving up and down, and that was awhile ago. but I'm pretty sure that's how I did it. It was either that or with collision detection. I think it might have been the latter.

 

You want to use something like this:

Code:

    Public Shared Sub MoveControl(ByVal C As Control, ByVal X As Integer, ByVal Y As Integer)
        If C.Parent Is Nothing Then Throw New Exception("It has no parent.")
        Dim NewBounds As New Rectangle(C.Left + X, C.Top + Y, C.Width, C.Height)
        If C.Parent.ClientRectangle.Contains(NewBounds) Then C.Bounds = NewBounds
    End Sub

    Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
        Select Case e.KeyCode
            Case Keys.Up : MoveControl(Me.PictureBox1, 0, -5)
            Case Keys.Down : MoveControl(Me.PictureBox1, 0, 5)
            Case Keys.Left : MoveControl(Me.PictureBox1, -5, 0)
            Case Keys.Right : MoveControl(Me.PictureBox1, 5, 0)
        End Select
    End Sub

It is also best that you don't use controls for sprites and draw the sprites directly to the form. It will run a lot faster.