animation_export.py

def export_single_action(context, filepath):

    armature = bpy.context.active_object
    action = armature.animation_data.action
    scene = bpy.context.scene

    export_action_internal(context, armature, action, scene, filepath)

def export_all_actions(context, filepath):
    start_time = time.clock()
    armature = bpy.context.active_object
    scene = bpy.context.scene

    original_action = armature.animation_data.action
    exported_actions = []
    # Loop through all actions in blend file and export all with fake user flag on
    for action in bpy.data.actions:
        if(action.use_fake_user != True):
            continue
        export_action_internal(context, armature, action, scene, filepath)
        exported_actions.append(action.name)


    armature.animation_data.action = original_action
    print("\nEXPORTED ACTIONS:")
    for action in exported_actions:
        print(action)

    print("--- %s seconds ---" % (time.clock() - start_time))


def export_action_internal(context, armature, action, scene, filepath):
    # Store original values
    original_frame_start = scene.frame_start
    original_frame_end = scene.frame_end

    # Set frame range to action max min
    scene.frame_start = action.frame_range[0]
    scene.frame_end = action.frame_range[1]

    # Prep filename
    filename = filepath + "@" + action.name + ".fbx"

    # Add dummy object
    # This is done to have control over the final hierarchy in Unity.
    bpy.ops.object.empty_add(type='PLAIN_AXES')
    empty = bpy.context.scene.objects[-1]
    empty.name = "_DUMMY"

    # Prep selection for export
    empty.select = True
    armature.select = True

    armature.animation_data.action = action

    export_selected(filename)

    # Restore original values
    scene.frame_start = int(original_frame_start)
    scene.frame_end = int(original_frame_end)

    # Delete dummy object
    armature.select = False
    bpy.ops.object.delete()

    armature.select = True
    bpy.context.scene.objects.active = armature


class class_export_single_action(bpy.types.Operator, ExportHelper):
    """Export the selected rig's currently active action"""
    bl_idname = "bear.export_single_action"
    bl_label = "Export Current Action"
    filename_ext = ""

    filepath = ""

    @classmethod
    def poll(cls, context):
        return len(context.selected_objects) is not 0

    def execute(self, context):
        export_single_action(context, self.filepath)
        return {'FINISHED'}

class class_export_all_actions(bpy.types.Operator, ExportHelper):
    """Export all actions with Fake User enabled"""
    bl_idname = "bear.export_all_actions"
    bl_label = "Export All Actions"
    filename_ext = ""

    filepath = ""

    @classmethod
    def poll(cls, context):
        return len(context.selected_objects) is not 0

    def execute(self, context):
        export_all_actions(context, self.filepath)
        return {'FINISHED'}
    
def export_selected(filename, include_animation=True, override_bake_anim_step=1.0):
    bpy.ops.export_scene.fbx(
    filepath=filename,
    check_existing=True,
    axis_forward='-Z',
    axis_up='Y',
    filter_glob="*.fbx",
    version='BIN7400',
    ui_tab='MAIN',
    use_selection=True,
    global_scale=1.0,
    apply_unit_scale=False, #Set to false to avoid rig being scaled to 100 in Unity
    bake_space_transform=True,
    object_types={'ARMATURE',
    #'CAMERA',
    'EMPTY',
    #'LAMP',
    'MESH',
    #'OTHER'
    },
    use_mesh_modifiers=True,
    mesh_smooth_type='OFF',
    use_mesh_edges=False,
    use_tspace=False,
    use_custom_props=False,
    add_leaf_bones=False, #Disabledee
    primary_bone_axis='Y',
    secondary_bone_axis='X',
    use_armature_deform_only=True,
    armature_nodetype='NULL',
    bake_anim=True,
    bake_anim_use_all_bones=True,
    bake_anim_use_nla_strips=False,
    bake_anim_use_all_actions=False,
    bake_anim_force_startend_keying=True,
    bake_anim_step=override_bake_anim_step,
    bake_anim_simplify_factor=0.0,
    use_anim=include_animation,
    use_anim_action_all=False,
    use_default_take=False,
    use_anim_optimize=False,
    anim_optimize_precision=1.0,
    path_mode='AUTO',
    embed_textures=False,
    batch_mode='OFF',
    use_batch_own_dir=True,
    use_metadata=True)