bobo

import pygame
from pygame.locals import *

pygame.init()

# some parameters
screen_size = width, height = (480, 360)
shift = 60
origins = (0, 0)
ghost_start_pos = (470, 0)

# screen
screen = pygame.display.set_mode(screen_size)
pygame.display.set_caption('just trying')

# images
mario = pygame.image.load('NewRaccoonMario.png').convert_alpha()
ghost = pygame.image.load('ghost.gif').convert()
mario_rect = mario.get_rect()
ghost_rect = ghost.get_rect()
background = pygame.image.load('mario_scenario.jpg').convert()

while 1:
    for event in pygame.event.get():
        if event.type == QUIT:
            exit()
        elif event.type == KEYDOWN:
            key = pygame.key.get_pressed()
            if key[K_ESCAPE]:
                exit()
            elif key[K_UP]:
                mario_rect.move_ip(0, -shift)
            elif key[K_DOWN]:
                mario_rect.move_ip(0, shift)
            elif key[K_RIGHT]:
                mario_rect.move_ip(shift, 0)
            elif key[K_LEFT]:
                mario_rect.move_ip(-shift, 0)

    ghost_rect.move_ip(-50, 0)
    if ghost_rect.left < 0:
        ghost_rect.move_ip(ghost_start_pos)
    if mario_rect.left < 0:
        mario_rect.move_ip(1, 0)
    elif mario_rect.right > width:
        mario_rect.move_ip(470, 0)
    elif mario_rect.top > height:
        mario_rect.move_ip(359, 0)
    elif mario_rect.bottom < 0:
        mario_rect.move_ip(0, 0)
    if mario_rect.colliderect(ghost_rect):
        pass

    screen.blit(background, origins)
    screen.blit(mario, mario_rect)
    screen.blit(ghost, ghost_rect)
    pygame.time.delay(50)
    pygame.display.flip()