[Pythoncard-cvs] PythonCard/samples/gravity gravity.py,1.2,1.3

[Kevin A. <ka...@us...>]

Update of /cvsroot/pythoncard/PythonCard/samples/gravity
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv4104

Modified Files:
	gravity.py 
Log Message:
switched to using new util.time function
changed drawing to throttle to a specific number of frames per second


Index: gravity.py
===================================================================
RCS file: /cvsroot/pythoncard/PythonCard/samples/gravity/gravity.py,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** gravity.py	25 Sep 2004 21:12:12 -0000	1.2
--- gravity.py	25 Sep 2004 21:47:36 -0000	1.3
***************
*** 12,20 ****
  # contains some cruft
  
! from PythonCard import clipboard, dialog, graphic, model
  import wx
  import os
  import random
- import time
  
  
--- 12,19 ----
  # contains some cruft
  
! from PythonCard import clipboard, dialog, graphic, model, util
  import wx
  import os
  import random
  
  
***************
*** 128,148 ****
          avgfps = 0
          frame = 0
          # hack to force a difference
!         # between time.time() and startTime
          # to avoid a division by zero exception on fast machines
          # aka my Windows box ;-)
!         startTime = time.time() - 0.001
          while self.animate:
!             canvas.clear()
!             for ball in self.sprites:
!                 ball.move()
!             if wx.Platform == '__WXMAC__':
!                 canvas.redraw()
!             else:
!                 canvas.refresh()
!             #time.sleep(.01)
              # give the user a chance to click Stop
-             frame += 1
-             self.statusBar.text = "Average FPS: %f" % (frame / (time.time() - startTime))
              wx.Yield()
  
--- 127,160 ----
          avgfps = 0
          frame = 0
+         
+         seconds = util.time()
+         # number of frames to display a second
+         # on faster boxes this will throttle the number
+         # of frames calculated and displayed, but on slower
+         # boxes it won't prevent slowdown
+         fps = 30
+         # amount of time that should pass before drawing another frame
+         timePerFrame = 1.0 / fps
+         print timePerFrame
+         
          # hack to force a difference
!         # between time and startTime
          # to avoid a division by zero exception on fast machines
          # aka my Windows box ;-)
!         startTime = util.time() - 0.001
          while self.animate:
!             newSeconds = util.time()
!             if newSeconds - seconds >= timePerFrame:
!                 seconds = newSeconds
!                 canvas.clear()
!                 for ball in self.sprites:
!                     ball.move()
!                 if wx.Platform == '__WXMAC__':
!                     canvas.redraw()
!                 else:
!                     canvas.refresh()
!                 frame += 1
!                 self.statusBar.text = "Average FPS: %f" % (frame / (seconds - startTime))
              # give the user a chance to click Stop
              wx.Yield()