Pause a control when SympleApplication lost focus or scene is not rendered

Troubleshooting General Help
1

Hi people, how could I manage to:


  1. pause/disable a control when the main window/activity is not visible, or when the window has lost it focus, for example: when you minimize the window or alt-tab it?


  2. pause/disable a control when the scene is not rendered?



    Thank you very much in advance,
2

If I’m not wrong, the simpleapplication is not updated when it lost focus, this way the controls are not updated as well. Look at setPauseOnLostFocus().

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3

You can also override the onLoseFocus and onGainFocus methods of simpleApplication. I use them to pause all logic and bring up my own pause menu.

4

Nice hint, I will look into those methods, maybe some idea comes out.

The fact is that I have an spatial moving until a collision checking tell it that stop; the collision checking is in a control attached to the spatial. When the main window is without focus, however the control continues running, the spatial find nothing to collide with, and it goes anywhere. I have found an alternative using this.setPauseOnLostFocus(false), so the simpleApplication never pauses… but I think that the behaviour I really want is to pause the control instead.

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5

You’d probably want setPauseOnLostFocus (true), but I also found this to not work correctly with physics sometimes, so what I do, is onLoseFocus, I disable any external appstates (mainly bulletappstate), and disable animations and any visible particles, and change my own “game state” variable to paused. And all controls/appstates I implement check if the game is paused before running. I also show a pause screen so that the user can resume when they want.

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6
@wezrule said:
You'd probably want setPauseOnLostFocus (true), but I also found this to not work correctly with physics sometimes, so what I do, is onLoseFocus, I disable any external appstates (mainly bulletappstate), and disable animations and any visible particles, and change my own "game state" variable to paused. And all controls/appstates I implement check if the game is paused before running. I also show a pause screen so that the user can resume when they want.


I do exactly the same, the default pause just hangs everything.