import pygame
import pickle

## Helper function to load and convert images
## into our used depth/format.
def load_image(filename):
    image = pygame.image.load(filename)
    image = image.convert()
    colorkey = image.get_at((0,0))
    image.set_colorkey(colorkey, pygame.locals.RLEACCEL)
    return image

## Load - loads any kind of object from a given filename.
## Used by load_levels()
def load(filename):
    loadfile = open(filename, 'r')
    obj = pickle.load(loadfile)
    loadfile.close()
    return obj

## Save - saves any kind of object to a given filename.
def save(object, filename):
    savefile = open(filename, 'w')
    pickle.dump(object, savefile)
    savefile.close()

## Draws text onto a surface.
def draw_text(text, size, color, screen, pos):
    font = pygame.font.Font(pygame.font.get_default_font(),\
                            size)
    rendered = font.render(text, True, color)
    screen.blit(rendered, pos)