blender 4.4.3 and 4.5.3 only export a single animation action unlike 4.3 and prior.

[creadmefford]

Normally I push all my animation actions down on the NLA stack and export them to ogre meshes and a shared ogre skeleton via blender2ogre. I've been doing this for a long time but as of 4.4 and 4.5 this no longer works. I'm only able to get a single animation which is the one on top that isn't pushed down.

In skleton.py, line 410 - 412 we call bpy.context.scene.frame_set(frame) to update the pbone pointers. The translation and quaternion (pose_location and pose_rotation) are identity value (length and angle are < 0.0001) for every action except the one not pushed down at the top. As a result, only that single action is added to the ogre skeleton file.

see here for the lines i'm talking about:

blender2ogre/io_ogre/ogre/skeleton.py

Line 412 in ef1d926

bone.update()

The blender api must have changed in some way so that the bones are "identity" except at the top.

The ogre script still reports that all the actions are being exported and includes the frame range but since the transform is identity animationFound = False and the code returns early at line 425.

I'm out of time, for now, to debug this further and will use 4.3 for the time being.
Thanks!

[rpgplayerrobin]

I also debugged this for 3 hours without finding any fix in the code.
I get the same results as you basically, but for me, 0 animations are exported.
animationFound is always false because all bones are at identity values as you also say.

But, the big change in Blender 4.4 is the "Slotted Actions" feature, which requires you to select a slot in the action editor for an action before you can actually see its animation.
That did not exist in Blender 4.0 and this is the difference, but I cannot see how to set that value in code anywhere for the skeleton.py write_animation.

Instead, before exporting, I go through at least one action in the action editor and select the slot for it (it was empty before for some reason) and then the export works correctly with animations.

[paroj]

@sercero do you have any idea?

[sercero]

@sercero do you have any idea?

Blender did change some things in regards to the animation system mainly the dope sheet which is what we were using to export animations. Will have to take a look