[2024] SU1 Beta - SDK 1.2.4 Blender Exporter 2.3.3 disable/modify automatically changes materials (with Blender bug)

Ideas
1

I have an enhancement request.

This has happened to me two times now - If I have 2024 exporter enabled and I have 2020 exporter disabled. If I load a 2020 project (aircraft) my materials are automatically updated to 2024 materials.

With the new load_handler in msfs_handlers.py the code will only not run if MSFS 2020 exporter is enabled. I thought that we should not have both exporters enabled. (I see there is now a function/button “Covert scene to MSFS 2024”)

Then why is there an automatic conversion? I believe you should change this. perhaps instead of checking if 2020 is installed AND Active - just check if 2020 is installed and DO NOT automatically change materials.

Code example

@persistent
def load_handler(dummy):
    #region Presets compatibility
    presets = bpy.context.scene.msfs_multi_exporter_presets
    for preset in presets:
        if preset.preset_name == "":
            preset.preset_name = preset.name
            preset.name = str(uuid.uuid4())
    #endregion

    #region Object LODS compatibility
    lod_groups = bpy.context.scene.msfs_multi_exporter_lod_groups
    for lod_group in lod_groups:
        if lod_group.group_name != "":
            lod_group.name = lod_group.group_name
    #endregion

    addon_name = 'io_scene_gltf2_msfs'
    (loaded_default, loaded_state) = addon_utils.check(addon_name)

    # We don't want to convert materials or scene if MSFS2020 is activated
    #if not loaded_default and not loaded_state:
    # We don't want to convert materials or scene if MSFS2020 is activated - we don't care if activated - assume user does not want automatic
    # conversion when you have 2020 in the blender addons - may or may not be active.
    # to make automatic conversion work - remove 2020 completely
    if not loaded_default:
        MSFS2024_SceneUtils.convert_scene_to_msfs2024()

EDIT: !!!
Seems like this is also a bug as addon_name is not correct.

EDIT2:

Possible blender logic error in check - if the addon is disabled it can’t find the addon and hence the return will always be false. There is no check for an addon being disabled. so loaded_state is useless.

EDIT3:

bug has been reported to Blender

2

To add to this. As a bug in Blender 4.2 uses the addon_name of

bl_ext.user_default.io_scene_gltf2_msfs

so that will have to be changed in the handler and the MSFS 2020 conversion code msfs_menu.py

    if bpy.app.version < (4, 2, 0):
        addon_name = 'io_scene_gltf2_msfs'
    else:
        # for 4.2 with extensions 
        addon_name = 'bl_ext.user_default.io_scene_gltf2_msfs'