Form related crash issue

[13corstena]

Hello, I am working on a game and I seem to be getting an error with when the program reaches a certain number of forms opened. I am making a side scrolling game, and as the character enters the end of one screen, it will exit that form, and as the other form opens, it will close the previous one. The issue I am getting with it is after 4 forms of closing/opening (specifically when the fourth form is opened) I get a nullpointer exception error and the program crashes. I have tried creating an app seeing if it was only an error in kbasic and it still crashes.

In terms of errors in coding, I have changed what form the start game starts on and it still crashes after 4 forms have been opened/close.

Example: When the start button is clicked on form1, the game will start on forest1, continue into forest 2, and crash when forest 3 opens (the 4th form to open). When I then change it so when the start button on form1 is clicked and open forest2 instead of 1, forest 3 will work fine, but then crash when forest 4 open (once again, the 4th form to open).

Here is some example code of when a form opens (on forest1):

Code: Select all

Private Sub Form_OnOpen
  form1.close
End Sub

And when the form closes (on forest1):

Code: Select all

Private Sub tmrportal_OnEvent()
  If imgheroup.x > 530 then
  forest2.opencentered
  End If
End Sub

Maybe something is wrong with the code and if that is the case, I will feel silly, or maybe there is just a more effective manner in changing forms, or maybe even a bug. If any can I have some help with this issue? If you would like a copy of the program (as it is too big to upload on the forum) send me your email and I will send the full copy over.

Thanks in advance

[Henning]

Hi,

I just made a small project with 5 Forms with 2 Buttons, Prev/Next.

Moving forward/backwards works, as long as not to Form1 again???????

/Henning

ManyForms.kbasic_project.zip

(2.53 KiB) Downloaded 134 times

[Henning]

Me again,

Would be interesting if someone could test, by changing the [Next] button event on the last Form to open Form1. Here that crashes the program.

/Henning

[Slowdown]

@Henning,

Got it to work correctly
Change the properties of Form1 OpenOnRun from False to True.

missed this topic.

[Slowdown]

This is the fxx limit, i'm signing off.