diff --git a/gamedata/objects/combat/player.py b/gamedata/objects/combat/player.py
index a540cc2..23d6c99 100644
--- a/gamedata/objects/combat/player.py
+++ b/gamedata/objects/combat/player.py
@@ -57,6 +57,14 @@ class Player(BaseObject):
             self.move(0,self.stepsize)
         else:
             self.move(hor*self.speed*self.game.dt,self.vertical*self.game.dt)
+        
+        # Je passe en dessous des semi-plateformes
+        if not self.checkcollisions(0,1,semi=False):
+            semi = self.checkcollisions(0,1,classic=False)
+            if semi!=self.checkcollisions(0,0,classic=False) and semi:
+                if keys["down"]["timer"]==1:
+                    self.rect.bottom = semi.top+1
+
 
         self.game.globals["camerax"] = self.rect.center[0]-self.game.globals["cameraw"]/2
         self.game.globals["cameray"] = self.rect.center[1]-self.game.globals["camerah"]/2
@@ -106,16 +114,17 @@ class Player(BaseObject):
                 ver-=diffy
                 self.rect[1]+=diffy
 
-    def checkcollisions(self,offx,offy):
+    def checkcollisions(self,offx,offy,classic=True,semi=True):
         temprect = self.rect.copy()
         temprect[0]+=offx
         temprect[1]+=offy
         result = False
-        for rect in self.collisionrects:
-            if temprect.colliderect(rect):
-                result = rect
-                break
-        if not result:
+        if classic:
+            for rect in self.collisionrects:
+                if temprect.colliderect(rect):
+                    result = rect
+                    break
+        if not result and semi:
             for rect in self.semirects:
                 if self.rect.bottom<=rect.top:
                     if temprect.colliderect(rect):