import pgzrun

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

titi = Actor('bird1', (75, 350))

def on_mouse_down():
    print('Clic souris !')
    titi.y -= 10 # équivalent à titi.y = titi.y - 50
    

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

def update():
    titi.y += titi.speed
titi.speed = 3
pgzrun.go()