Correctly stop live patching after player terminates

blender/arm/live_patch.py

@@ -19,6 +19,7 @@ msgbus_owner = object()
 
 
 def start():
+    """Start the live patch session."""
     log.debug("Live patch session started")
 
     listen(bpy.types.Object, "location", "obj_location")
@@ -32,6 +33,12 @@ def start():
         listen(light_type, "energy", "light_energy")
 
 
+def stop():
+    """Stop the live patch session."""
+    log.debug("Live patch session stopped")
+    bpy.msgbus.clear_by_owner(msgbus_owner)
+
+
 def patch_export():
     """Re-export the current scene and update the game accordingly."""
     if state.proc_build is not None:
@@ -68,7 +75,6 @@ def patch_done():
     js = 'iron.Scene.patch();'
     write_patch(js)
     state.proc_build = None
-    bpy.msgbus.clear_by_owner(msgbus_owner)
 
 
 def write_patch(js: str):

blender/arm/make.py

@@ -398,9 +398,11 @@ def build(target, is_play=False, is_publish=False, is_export=False):
                 shutil.copy(fn, arm.utils.build_dir() + dest + os.path.basename(fn))
 
 def play_done():
+    """Called if the player was stopped/terminated."""
     state.proc_play = None
     state.redraw_ui = True
     log.clear()
+    live_patch.stop()
 
 def assets_done():
     if state.proc_build == None: