From 33335a3e89c0c4d96af93c8983c29160f59a6135 Mon Sep 17 00:00:00 2001
From: Kayla Man <moonyuet2008@hotmail.com>
Date: Tue, 9 May 2023 23:25:37 +0800
Subject: [PATCH] fix the update and load function of the max scene loader

---
 .../hosts/max/plugins/load/load_max_scene.py  | 33 ++++++++++++-------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/openpype/hosts/max/plugins/load/load_max_scene.py b/openpype/hosts/max/plugins/load/load_max_scene.py
index 4b19cd671f..cffc4ae559 100644
--- a/openpype/hosts/max/plugins/load/load_max_scene.py
+++ b/openpype/hosts/max/plugins/load/load_max_scene.py
@@ -26,20 +26,16 @@ class MaxSceneLoader(load.LoaderPlugin):
 
         merge_before = {
             c for c in rt.rootNode.Children
-            if rt.classOf(c) == rt.Container
         }
         rt.mergeMaxFile(path)
 
         merge_after = {
             c for c in rt.rootNode.Children
-            if rt.classOf(c) == rt.Container
         }
-        max_containers = merge_after.difference(merge_before)
-
-        if len(max_containers) != 1:
-            self.log.error("Something failed when loading.")
-
-        max_container = max_containers.pop()
+        max_objects = merge_after.difference(merge_before)
+        max_container = rt.container(name=f"{name}")
+        for max_object in max_objects:
+            max_object.Parent = max_container
 
         return containerise(
             name, [max_container], context, loader=self.__class__.__name__)
@@ -48,15 +44,30 @@ class MaxSceneLoader(load.LoaderPlugin):
         from pymxs import runtime as rt
 
         path = get_representation_path(representation)
-        node = rt.getNodeByName(container["instance_node"])
-        max_objects = node.Children
+        node_name = container["instance_node"]
+        instance_name, _ = node_name.split("_")
+        merge_before = {
+            c for c in rt.rootNode.Children
+        }
+        rt.mergeMaxFile(path,
+                        rt.Name("noRedraw"),
+                        rt.Name("deleteOldDups"),
+                        rt.Name("useSceneMtlDups"))
+        merge_after = {
+            c for c in rt.rootNode.Children
+        }
+        max_objects = merge_after.difference(merge_before)
+        container_node = rt.getNodeByName(instance_name)
         for max_object in max_objects:
-            max_object.source = path
+            max_object.Parent = container_node
 
         lib.imprint(container["instance_node"], {
             "representation": str(representation["_id"])
         })
 
+    def switch(self, container, representation):
+        self.update(container, representation)
+
     def remove(self, container):
         from pymxs import runtime as rt