import pgzrun

TITLE = "Paf l'oiseau"
WIDTH = 400
HEIGHT = 708

def on_mouse_down(button):
    if button == mouse.LEFT:
        print("freinage")
        titi.speed -=1
    elif button == mouse.RIGHT:
        print ("Accélération")
        titi.speed += 1

def update():
    if titi.left > WIDTH:
        titi.right = 0
    if titi.right <0:
        titi.left = WIDTH

    titi.y += titi.speed

def draw():
    screen.blit('background', (0, 0))
    titi.draw()

titi = Actor ('bird1', (100,10))
titi.speed = 1



pgzrun.go()