import sys, pygame, time, os
import pygame.locals as loc
import random


def load_image(name, colorkey=None):
    fullname = os.path.join('data', name)
    try:
        image = pygame.image.load(fullname)
    except pygame.error, message:
        print 'Cannot load image:', fullname
        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, loc.RLEACCEL)
    return image, image.get_rect()

def load_sound(name):
    class NoneSound:
        def play(self): pass
    if not pygame.mixer or not pygame.mixer.get_init():
        return NoneSound()
    fullname = os.path.join('data', name)
    try:
        sound = pygame.mixer.Sound(fullname)
    except pygame.error, message:
        print 'Cannot load sound:', fullname
        raise SystemExit, message
    return sound


def main():
    """this function is called when the program starts.
       it initializes everything it needs, then runs in
       a loop until the function returns."""
#Initialize Everything
    pygame.init()
    screen = pygame.display.set_mode((640, 400))
    pygame.display.set_caption('title')
    pygame.mouse.set_visible(0)

#Create The Backgound
    background = pygame.Surface(screen.get_size())
    background = background.convert()
    background.fill((250, 250, 250))
    pygame.draw.rect(background, (250,0,0), (0,380,640,400))

#Put Text On The Background, Centered
    if pygame.font:
        font = pygame.font.Font(None, 36)
        text = font.render(":)", 1, (10, 10, 10))
        textpos = text.get_rect(centerx=background.get_width()/2)
        background.blit(text, textpos)

#Display The Background
    screen.blit(background, (0, 0))
    pygame.display.flip()

#Prepare Game Objects
    clock = pygame.time.Clock()

#    boom_sound = load_sound('boom.wav')

    allsprites = pygame.sprite.RenderPlain()



#Main Loop
    while 1:
        clock.tick(100)

    #Handle Input Events
        for event in pygame.event.get():
            if event.type == loc.QUIT:
                return
            elif event.type == loc.KEYDOWN:
                if event.key == loc.K_ESCAPE:
                    return

        allsprites.update()

    #Draw Everything
        screen.blit(background, (0, 0))
        allsprites.draw(screen)
        pygame.display.flip()

#Game Over


#this calls the 'main' function when this script is executed
if __name__ == '__main__': main()