why i cannot create a body like this:
i know i can create a body via Tiled and X2BodyWrapper but why is this code that works in libgdx and in other frameworks that use box2d is working but using xui2d it is not?
B4X:
Sub createBody
Dim playerShape As B2CircleShape
playerShape.Initialize(5)
Dim playerFixtureDef As B2FixtureDef
playerFixtureDef.Shape = playerShape
playerFixtureDef.Density = 1
playerFixtureDef.Restitution = 0.3
playerFixtureDef.Friction = 0.4
Dim playerDef As B2BodyDef
playerDef.BodyType = playerDef.TYPE_DYNAMIC
playerDef.Position.Set(0,0)
Dim playerBody As B2Body
playerBody = world.CreateBody(playerDef)
playerBody.CreateFixture(playerFixtureDef)
End Sub
Waiting for debugger to connect...
Program started.
Size scale: 1.07
1
1
*** MainLoop starting. ResumableIndex = 1
Error occurred on line: 131 (X2Utils)
java.lang.NullPointerException
at b4j.example.x2utils$ResumableSub_MainLoop.resume(x2utils.java:1618)
at b4j.example.x2utils._mainloop(x2utils.java:1381)
at b4j.example.x2utils._start(x2utils.java:317)
at b4j.example.game._startgame(game.java:129)
at b4j.example.main._appstart(main.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:632)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:237)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:167)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:91)
at anywheresoftware.b4a.shell.ShellBA.raiseEvent2(ShellBA.java:98)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:78)
at b4j.example.main.start(main.java:38)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
at java.lang.Thread.run(Thread.java:748)