import pygame

def initScreen():
    global width, height, size
    width = 820
    height = 640
    size = (width, height)

    global red, black
    red = (255, 0, 0, 0)
    black = (0, 0, 0, 0)

def initGame():
    global Rectangle
    Rectangle = initRectangle()
    global running
    running = False

def initSign():
    global image, image_rect
    image = pygame.image.load("seehofer.png")
    image_rect = image.get_rect()

class Rectangle(pygame.Rect):
    def __init__(self, x, y, width, height):
        self.x = x
        self.y = y
        self.width = width
        self.height = height

        self.speed_l = 0
        self.speed_r = 0

def initRectangle():
    x = 0
    y = 620
    width = 100
    height = 20

    global My_Rect
    My_Rect = Rectangle(x, y, width, height)
    return My_Rect

def input():
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            return False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_ESCAPE:
                return False
            if event.key == pygame.K_LEFT:
                My_Rect.speed_l = 1
            if event.key == pygame.K_RIGHT:
                My_Rect.speed_r = 1
        if event.type == pygame.KEYUP:
            Rectangle.speed_left = 0
            Rectangle.speed_right = 0

    return True

def update():
    if(0 <= Rectangle.x < width):
        Rectangle.x += My_Rect.speed_r * 3
        Rectangle.x += My_Rect.speed_l * 3

    image_rect.x = 100
    image_rect.y = 50

def draw():
    screen.fill(black)
    screen.blit(image, image_rect)
    pygame.draw.rect(screen, red, Rectangle)
    pygame.display.flip()


# --------- Start of Main-Code ------------
running = False

pygame.init()
initScreen()
initGame()
initSign()
screen = pygame.display.set_mode(size)

running = True


while running == True:
    running = input()
    update()
    draw()