Re: [pygame] Smooth scrolling ?

[Guillaume Proux <gproux@xxxxxxxxxxxxxx>]

ANother cool hack...

Use ctypes under windows to increase the priority of the current 
thread... Disable GC where not useful and stay in FULLSCREEN HWSURFACE 
DOUBLEBUF...
The following code replays just so neatly :)

Guillaume

--
import pygame
import gc
from ctypes import *

# increase thread priority for this thread

hthread = windll.kernel32.GetCurrentThread()
windll.kernel32.SetThreadPriority(hthread,1)

pygame.init()

screen= pygame.display.set_mode( (800,600), 
pygame.DOUBLEBUF|pygame.HWSURFACE|pygame.FULLSCREEN, 32 )

i= 0
f= pygame.font.Font( r'c:\windows\fonts\arialn.ttf', 80 )
s= f.render( 'Scrolling', 1, (0xff,0xee,0x00) )
surf= pygame.Surface( s.get_size(), pygame.SRCALPHA, 32 )
surf.blit( s, (0,0) )
screen.fill( (255,255,255) )
pygame.display.flip()
screen.fill( (255,255,255) )
pygame.display.update()
h=surf.get_height()
gc.disable()
while i< 800:
  screen.fill( (255,255,255), (0,200,800,h) )
  screen.blit( surf, ( i, 200 ) )
  pygame.display.flip()
  pygame.event.poll()
  i+= 5
gc.enable()
pygame.quit()