work in progress ue4 export

gistfile1.txt

#ue4export header version 0.1
#last tested with b-v2.79 ue4export-v0.2.1
import bpy
import datetime
S_time =  datetime.datetime.now()
print("---RUNNING-UE4  ::: "+str(S_time)+"---")

ActionList=['M4_ADS_RELOAD']

#ActionList=[
#'M4_ADS_RELOAD',
#'M4_ADS_FIRE',
#'M4_ADS_Transition',
#'M4_hipFire',
#'M4_hipFire2',
#'M4_hipFire3',
#'M4_hipFire4',
#'M4_PoseLib',
#'M4_putAway']

ObjectList=[
'ARMS',
'AR_RIG',
'HELPER']


#context
original_context = bpy.context.area.type




#Remove all animation data (Clean Slate)
for rig in ObjectList:
	rigObj = bpy.data.objects[rig]
	rigObj.animation_data_clear()
    #bpy.data.objects[rig].animation_data_clear()

#Export one action set at a time
for focusedAction in ActionList: #focused action is a string "jump"
    for rig in ObjectList:
        rigObj = bpy.data.objects[rig]
        for action in bpy.data.objects[rig].exportActionList: 
            action.use = False
            if action.name == focusedAction:
               action.use = True
               rigObj.animation_data_clear()
               rigObj.animation_data_create()
               actiondata = bpy.data.actions[focusedAction]
               if actiondata.users>1:
                  newAction = bpy.data.actions[focusedAction].copy()
                  newAction.name = focusedAction+' copy'+rig
                  actiondata=newAction
               rigObj.animation_data.action = actiondata

               ####Create NLA strips
               track = rigObj.animation_data.nla_tracks.new()
               newStrip = track.strips.new(actiondata.name, actiondata.frame_range[0], actiondata)
               print(newStrip)
               print("-----------------------------------------------------------------------------------------------------------")
               rigObj.animation_data.action = None

               bpy.context.area.type = "NLA_EDITOR"
               bpy.ops.nla.actionclip_add(action=focusedAction)
               #bpy.ops.nla.select_all_toggle(invert=False)
               #bpy.ops.nla.make_single_user()
               bpy.ops.anim.channels_clean_empty()


               #bpy.context.space_data.mode= "ACTION"
               #bpy.ops.action.push_down()
               #bpy.context.area.type = "NLA_EDITOR"
               #bpy.ops.nla.select_all_toggle(invert=False)
               #bpy.ops.nla.action_pushdown(channel_index=-1) #Push action down onto the top of the NLA stack as a new strip
               #line47 RuntimeError: Error: No active AnimData block to use (select a data-block expander first or set the appropriate flags on an AnimData block)
               #bpy.ops.nla.make_single_user() #ensure that each action is only used once in the set of strips selected

               #bpy.ops.nla.actionclip_add(action='') #add an action-clip strip referencing an action to the active track
               #bpy.ops.nla.action_pushdown(channel_index=-1) #Push action down onto the top of the NLA stack as a new strip



               #bpy.ops.nla.make_single_user() #ensure that each action is only used once in the set of strips selected
               #bpy.ops.nla.meta_add()  #add new meta-strips incorporating the selected strips
               #bpy.ops.nla.meta_remove() #Separate out the strips held by the selected meta-strips
               #bpy.ops.nla.select_all_toggle(invert=False) #Select all or deselect all.
    bpy.ops.object.exportforunreal()
bpy.context.area.type = original_context