From 289455148f8d19544b108758cbc65307805ec58b Mon Sep 17 00:00:00 2001
From: pullusb <bernou.samuel@gmail.com>
Date: Wed, 23 Jul 2025 12:15:50 +0200
Subject: [PATCH] Fix error for blender 4 and above using bone collection 
 system

2.0.0

- fixed: bone collection instead of layers for Blender 4+
---
 CHANGELOG.md |  4 ++++
 __init__.py  |  4 ++--
 fn.py        | 22 ++++++++++------------
 3 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a56f561..b628f9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+2.0.0
+
+- fixed: bone collection instead of layers for Blender 4+
+
 1.8.1
 
 - added: bone propertie search and active bone picker
diff --git a/__init__.py b/__init__.py
index 17034bd..9a035a4 100644
--- a/__init__.py
+++ b/__init__.py
@@ -4,8 +4,8 @@ bl_info = {
     "name": "Auto Walk",
     "description": "Develop a walk/run cycles along a curve and pin feets",
     "author": "Samuel Bernou",
-    "version": (1, 8, 1),
-    "blender": (3, 0, 0),
+    "version": (2, 0, 0),
+    "blender": (4, 0, 0),
     "location": "View3D",
     "warning": "",
     "doc_url": "https://gitlab.com/autour-de-minuit/blender/auto_walk",
diff --git a/fn.py b/fn.py
index bdf4be3..78d63ef 100644
--- a/fn.py
+++ b/fn.py
@@ -9,11 +9,7 @@ def get_addon_prefs():
     function to read current addon preferences properties
     access with : get_addon_prefs().super_special_option
     '''
-    import os 
-    addon_name = os.path.splitext(__name__)[0]
-    preferences = bpy.context.preferences
-    addon_prefs = preferences.addons[addon_name].preferences
-    return (addon_prefs)
+    return bpy.context.preferences.addons[__package__].preferences
 
 def open_addon_prefs():
     '''Open addon prefs windows with focus on current addon'''
@@ -739,14 +735,15 @@ def go_edit_mode(ob, context=None):
 
 
 def get_visible_bones(ob):
-    '''Get name of all editable bones (unhided *and* on a visible bone layer'''
-    # visible bone layer index
-    visible_layers_indexes = [i for i, l in enumerate(ob.data.layers) if l]
-    # check if layers overlaps
+    '''Get name of all editable bones (unhidden *and* on a visible bone layer)'''
+
+    ## list names
+    visible_bones_collection = [c.name for c in ob.data.collections_all if c.is_visible]
+
+    ## check if layers overlaps
     visible_bones = [b for b in ob.data.bones \
-        if not b.hide \
-        if any(i for i, l in enumerate(b.layers) if l and i in visible_layers_indexes)]
-    
+        if not b.hide and any((col.name in visible_bones_collection for col in b.collections))] # is in a visible bone collection
+
     return visible_bones
     
 
@@ -760,6 +757,7 @@ def get_x_pos_of_visible_keys(ob, act):
     
     ## skip offset + fcu related to invisible bones
     viz_bones = get_visible_bones(ob)
+    print('viz_bones: ', viz_bones)
     visible_bone_names = [b.name for b in viz_bones]
 
     keys = []