diff --git a/assets.py b/assets.py
index 3c7c48fb19ec3dbcbf7de257be88dc3b90541d53..0a3cffea3b145ff9b377c722b1144d3f7320f41e 100755
--- a/assets.py
+++ b/assets.py
@@ -106,7 +106,7 @@ class UnityFile:
             print(f"lecture de {self.get_full_path()}")
             if platform.system() == "Windows":
                 winsound.PlaySound(self.get_full_path(), winsound.SND_FILENAME)
-                
+
             else:
                 playsound(self.get_full_path(), sync)
 
@@ -118,17 +118,22 @@ class UnityFile:
 #https://stackoverflow.com/a/7493603/19587593
 def asset_atlas(cls):
     cls.atlas = {}
-    def getinstance(anid, snd_or_dico=None, img=None, base_path=""):
+    cls.rewrite_list = {}
+    def getinstance(anid, snd_or_dico=None, img=None, base_path="", name_space=None):
+        if name_space != None:
+            anid = cls.check_rewrite(anid, name_space)
         if anid not in cls.atlas:
-            cls.atlas[anid] = cls(anid, snd_or_dico, img, base_path)
+            cls.atlas[anid] = cls(anid, snd_or_dico, img, base_path)#le name_space n'est pas nécessaire dans ce cas
         elif snd_or_dico != None or img != None:
-            cls.atlas[anid].merge(cls(anid, snd_or_dico, img, base_path))
+            if not cls.atlas[anid].merge(cls(anid, snd_or_dico, img, base_path)):
+                anid = cls.rewrite_id(anid, name_space)
+                cls.atlas[anid] = cls(anid, snd_or_dico, img, base_path)
         return cls.atlas[anid]
     return getinstance
 
 @asset_atlas
 class Asset:
-    def __init__(self, anid, snd_or_dico=None, img=None, base_path=""):
+    def __init__(self, anid, snd_or_dico=None, img=None, base_path="", name_space = None):
         self.mid = anid
         if type(snd_or_dico) == dict:
             if img == None:
@@ -149,6 +154,24 @@ class Asset:
             else: #path
                 self.img = UnityFile(img, base_path, self.mid)
 
+    @classmethod
+    def rewrite_id(cls, anid, name_space):
+        if anid in cls.atlas.keys():
+            new_id += f"_{name_space}"
+            while new_id in cls.atlas.keys():
+                new_id += name_space
+            if name_space not in cls.rewrite_list.keys():
+                cls.rewrite_list[name_space] = {}
+            cls.rewrite_list[name_space][anid] = new_id
+        return new_id
+
+    @classmethod
+    def check_rewrite(cls, anid, name_space):
+        if name_space in cls.rewrite_list.keys() and anid in cls.rewrite_list[name_space].keys():
+            return cls.rewrite_list[name_space][anid]
+        else:
+            return anid
+
     def set_id(self, new_id):
         self.mid = new_id