diff --git a/birdie.py b/birdie.py
index 3d98845..2e2bb21 100644
--- a/birdie.py
+++ b/birdie.py
@@ -4,12 +4,19 @@ TITLE = "Paf l'oiseau"
 WIDTH = 400
 HEIGHT = 708
 
-def on_mouse_down():
-    print('Clic souris !')
-    titi.y -= 50
+def on_mouse_down(button):
+    print('Clic', button)
+    if button == mouse.RIGHT :
+        titi.speed += 1
+    elif button == mouse.LEFT :
+        titi.speed -= 1
 
 def update():
-    titi.y += titi.speed
+    titi.x += titi.speed
+    if titi.left > WIDTH :
+        titi.right = 0
+    if titi.right < 0 :
+        titi.left = WIDTH
 
 def draw():
     screen.blit('background', (0, 0))