PureBasic Forums - English

Posted: **Sat Aug 12, 2023 8:49 pm**

Hi everybody! I dont know if this is the right way to do this, feel free to improve my code.
The idea is lock fps when write a game or any visual software in diferent machines.

Have a nice summer and walk by the shadow

Code: Select all

Global canvas

Global FPSreales
Global.d DeltaTMax
Global.q DeltaTAcumulada, DeltaTimeIni

Procedure drawcanvas()
	StartDrawing(CanvasOutput(canvas))
    Box(0,0,OutputWidth(),OutputHeight(), $555555)
    DrawingMode(#PB_2DDrawing_Transparent)
  	DrawText(5,5,"Fps " + StrF(FPSreales,3),$ffffff)
  	DrawText(5,25,"Max " + StrF(DeltaTMax,3),$ffffff)
	StopDrawing()
	
EndProcedure

Procedure setFps(FPSspeed)
  DeltaTMax= 1000 / FPSspeed 
  DeltaTime= ElapsedMilliseconds() - DeltaTimeIni
  DeltaTAcumulada +  DeltaTime
  If(DeltaTAcumulada >= DeltaTMax)
    FPSreales= 1000/DeltaTAcumulada
    DeltaTAcumulada = 0
    drawcanvas()
  EndIf
  DeltaTimeIni= ElapsedMilliseconds()
EndProcedure

MyFPS= 30
OpenWindow(0,0,0,1000,600,"Set FPS to "+Str(MyFPS),#PB_Window_SystemMenu | #PB_Window_ScreenCentered | #PB_Window_MaximizeGadget | #PB_Window_MinimizeGadget)
canvas= CanvasGadget(#PB_Any,5,5,WindowWidth(0),WindowHeight(0))
DeltaTimeIni= ElapsedMilliseconds()

Repeat
  event= WindowEvent()
  
  Select event
    Case #PB_Event_Gadget
      
    Case #PB_Event_CloseWindow
      Break
  EndSelect
  
  setFps(MyFPS)
  Delay(1)

ForEver

Posted: **Mon Aug 14, 2023 12:51 pm**

Hi minimy,
make sure that the message/event queue is completely processed before doing anything else in the main loop.
Im also not sure what Delay() internally uses but iirc. it should be fine.

Posted: **Tue Aug 15, 2023 12:44 pm**

Hi minimy,
make sure that the message/event queue is completely processed before doing anything else in the main loop.
Im also not sure what Delay() internally uses but iirc. it should be fine.

Hi Mijikai, I think it processes the entire queue of messages (events) and then runs setfps. In any case you can improve and share the code if it seems good to you. I use the delay so as not to block the OS with the application.
Greetings and thanks for the suggestion.

PureBasic Forums - English

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