B4J Tutorial SolarSystem

It is a B4J "kick-start" project for the JAR of this Github project. How to use it:
1. Copy the attached B4J project - the B4J code is very simple:
B4J code:
#Region Project Attributes
    #MainFormWidth: 600
    #MainFormHeight: 600
#End Region

#AdditionalJar: SolarSystemRunnable

Sub Process_Globals
    Private fx As JFX
'    Private MainForm As Form

    Private ssr As JavaObject

End Sub

Sub AppStart (Form1 As Form, Args() As String)
'    MainForm = Form1
'    MainForm.RootPane.LoadLayout("Layout1")
'    MainForm.Show
    
    ssr.InitializeNewInstance("SolarSystemMain", Null)
    Dim aa() As String = Array As String(" ")
    ssr.RunMethod("main", Array(aa))

End Sub

2. Copy attached Jar to your additional library folder (SolarSystemRunnable.jar)
3. Go here and download the planet images (this Github project). Too big a zip to upload (download the jpg files from the root of the Github project)
4. Run the B4J project once so that it will create the /Objects folder of the B4J project - it will in all probability log an error in the B4J Ide
5. Copy the JPG files (see 3 above) into the newly created /Objects folder of the B4J project (the /Objects folder will be created after the first compile of the B4J project)
6. Run the B4J project again - you should see a "live" UI that looks like this:

1680865796429.png


Note the following when using it:

Keyboard Shortcuts:

  • SPACEBAR -> Pause/Play
  • MOUSE-CLICK -> View/Toggle Specific Planet/Sun Info -> If you have trouble clicking on a planet/Sun, pause the model (SPACEBAR) and then click. Unpause (SPACEBAR) to view planets orbiting again.
  • PLUS KEY -> Zoom In
  • MINUS KEY -> Zoom Out
  • ESC -> Quit
 

Attachments

  • SolarSystemRunnable.jar
    8.7 KB · Views: 152
  • b4jSolarSystem.zip
    1.6 KB · Views: 155

GMan

Well-Known Member
Licensed User
Longtime User
Hoi Johan,
nice - works like it should
1680869940554.png
 

GMan

Well-Known Member
Licensed User
Longtime User
Is it possible to show the names of the DOTS or (better) the images in the main screen ? ;)
 

Johan Schoeman

Expert
Licensed User
Longtime User
Is it possible to show the names of the DOTS or (better) the images in the main screen ? ;)
I am sure that with some editing and then reconciling to a new Jar can get it done. One can use SLC to compile a new Jar after the mods to the original java code
 
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