iGameView is a port of B4A GameView library:
https://www.b4x.com/android/forum/threads/gameview-create-2d-android-games-part-i.20038/
It also includes methods for low latency audio playback, similar to B4A SoundPool. These features are based on the following open source project:
https://github.com/kstenerud/ObjectAL-for-iPhone (see the license in the readme).
You can use the audio playback features without the GameView drawing features.
Three examples are included:
GameViewSmiley: simple example with no interaction
Jumping smiley: vertical scrolling game where the user controls the smiley by tilting the phone.
Asteroids: classic asteroids example. This also includes a game pad class.
You should start by going over the B4A tutorials. The main concepts are the same.
https://www.b4x.com/android/forum/threads/gameview-create-2d-android-games-part-i.20038/
Tips & notes
- The B4A examples use %x / %y for most measurements. In B4i you should only use percentage inside Page_Resize event. As an alternative we handle the Page1_Resize event once and store the page width and height. Note that all of the layout is set in the first resize event.
- B4i Rect object stores the values as floats while B4A Rect object stores the values as Ints. You can use Round to round the values before they are set.
- Performance should be tested in release mode (Alt + T + B + R).
If it starts to be very slow in debug mode then stop the program, click on Ctrl + P (clean project) and run again.
The performance in release mode should be good. It can handle several hundred sprites.
- You will see in the examples that I'm using this sub to create canvas objects:
Code:
'don't forget to release when done
Public Sub CreateCanvas (width1 As Int, height1 As Int) As Canvas
Dim iv As ImageView
iv.Initialize("")
iv.SetLayoutAnimated(0, 1, 0, 0, width1, height1)
Dim c As Canvas
c.Initialize(iv)
Return c
End Sub
This is an alternative to B4A Bitmap.InitializeMutable method.
If you are using the hosted builder then only the XML file is required.
