Current code here:
#Setup: I import all the modules hereimport sysimport osimport pygameimport randomimport mathfrom pygame.locals import *progpath = os.getcwd()+"/"keys=[False]*324snow_file_name = '\snow.bmp' #this is the filename for the sprite I will usedef kill(): #this function is for killing the window and quitting pygame.display.quit() pygame.quit() returndef load_image(name, colorkey=None): #this function is for loading the image to us in the program fullname ='c:\Python24' + name try: image = pygame.image.load(fullname) except pygame.error, message: print 'Cannot load image:,%s', name raise SystemExit, message image = image.convert() if colorkey is not None: if colorkey is -1: colorkey = image.get_at((0,0)) image.set_colorkey(colorkey, RLEACCEL) print('hi') return image, image.get_rect()class Snow(pygame.sprite.Sprite): #this class handles loading the image that I use as a mouse pointer and tracking and drawing it def __init__(self): #initialization pygame.sprite.Sprite.__init__(self) self.image, self.rect = load_image(snow_file_name, -1) def update(self): #actions for frame update pos = pygame.mouse.get_pos() self.rect.midtop = pos ######################################################def main(): pygame.init() pygame.font.init() w=320.0 #screen width h=200.0 #height screen = pygame.display.set_mode((int(w*2),int(h))) pygame.display.set_caption("Trial") pygame.mouse.set_visible(0) clock=pygame.time.Clock() background = pygame.Surface(screen.get_size()) background = background.convert() background.fill((250,250,250)) if pygame.font: #add text to background font = pygame.font.Font(None, 36) text = font.render("TEST", 1, (10,10,10)) textpos = text.get_rect() textpos.centerx = background.get_rect().centerx background.blit(text, textpos) screen.blit(background, (0,0)) pygame.display.flip() #background is now displayed snow = Snow() #sprite instance allsprites = pygame.sprite.RenderPlain((snow)) #container #Main loop while True: #Event handling clock.tick(60) for event in pygame.event.get(): if event.type==QUIT: kill() return if event.type==KEYDOWN: if event.key==K_ESCAPE: kill() return keys[event.key]=True elif event.type==KEYUP: keys[event.key]=False print event allsprites.update() #calls update function of all sprites screen.blit(background, (0,0)) #redraw background allsprites.draw(screen) #redraw sprites pygame.display.flip() #show new screen if __name__=="__main__": main()It took me a while to figure out how it all worked but it was worth it.
Basically I still have the same image loading and quitting function and most of my event handler remains unchanged. Then I define my Snow class. All this class does is load the snow image and then keep track of its position for the update.
This time I define a surface background that will be used to draw the background to the screen. This will be very useful later for drawing the non-moving parts of a level.
I create an instance of Snow() and put it in a container allsprites. The container is not really necessary for this program but seems like a good practice that will make it less hardcoded.
Most of my event handler is the same. I have removed the keyboard input. The rest is painfully easy. I just have to update all the sprites. I would assume if any of my sprites were using preprogramed or AI based movement I could imbed that in the update() function of their class and handle all of it with just one line of code in the main loop (w00t!).
Finally I redraw the background, draw all the sprites (there is only one), and the flip the new screen into place.
So easy. So nice.
