import pygame

class Player(object):
    def __init__(self, x, y):
        self.rect = pygame.Rect(x, y, 32, 32)

    def move(self, dx, dy):
        self.rect.x += dx
        self.rect.y += dy
        if self.rect.x < 0:
            self.rect.x = 0
        if self.rect.x > 768:
            self.rect.x = 768
        if self.rect.y < 0:
            self.rect.y = 0
        if self.rect.y > 568:
            self.rect.y = 568


#Initialise PyGame
pygame.init

#Set up the display
pygame.display.set_caption("Game")
screen = pygame.display.set_mode((800, 600))

#Create the player
player = Player(32, 32)


#Main loop for the game
running = True
while running:
    #Quit if ESCAPE pressed
    for e in pygame.event.get():
        if e.type == pygame.QUIT:
            running = False
        if e.type == pygame.KEYDOWN and e.key == pygame.K_ESCAPE:
            running = False

    #Move the player if an arrow key is pressed
    key = pygame.key.get_pressed()
    if key[pygame.K_a]:
        player.move(-1, 0)
    if key[pygame.K_d]:
        player.move(1, 0)
    if key[pygame.K_w]:
        player.move(0, -1)
    if key[pygame.K_s]:
        player.move(0, 1)

    #Draw the scene
    screen.fill((0, 0, 0))
    pygame.draw.rect(screen,(0,0,255),(player.rect.x, player.rect.y, 32, 32))
    pygame.display.flip()

#Close at the end
pygame.display.quit()