Bring more sanity to animation exporter

Rearrange a few things and some sanity checks.

korman/exporter/animation.py

@@ -22,7 +22,7 @@ import weakref
 
 from . import utils
 
-class AnimationConverter:
+class AnimationConverter(plAGAnim):
     def __init__(self, exporter):
         self._exporter = weakref.ref(exporter)
         self._bl_fps = bpy.context.scene.render.fps
@@ -75,7 +75,7 @@ class AnimationConverter:
         anim_data = bo.plasma_modifiers.animation
         if anim_data.obj_sdl_anim:
             atcanim = self._mgr.find_create_object(plAgeGlobalAnim, so=so)
-        else:
+        elif anim_data.obj_sdl_anim is None:
             atcanim = self._mgr.find_create_object(plATCAnim, so=so)
 
         # Add the animation data to the ATC
@@ -96,7 +96,7 @@ class AnimationConverter:
         if anim_data.obj_sdl_anim:
             atcanim.start = self._convert_frame_time(min(get_ranges(obj_action, index=0)))
             atcanim.end = self._convert_frame_time(max(get_ranges(obj_action, index=1)))
-        else:
+        elif anim_data.obj_sdl_anim is None:
             atcanim.start = self._convert_frame_time(min(get_ranges(obj_action, data_action, index=0)))
             atcanim.end = self._convert_frame_time(max(get_ranges(obj_action, data_action, index=1)))
 
@@ -105,18 +105,17 @@ class AnimationConverter:
             for marker in obj_action.pose_markers:
                 atcanim.setMarker(marker.name, self._convert_frame_time(marker.frame))
 
-        def set_anim_params(plAGAnim):
-            sdl_name = bo.plasma_modifiers.animation.obj_sdl_anim
-            if sdl_name:
-                atcanim.globalVarName = sdl_name
-            else:
-                # Fixme? Not sure if we really need to expose this...
-                atcanim.easeInMin = 1.0
-                atcanim.easeInMax = 1.0
-                atcanim.easeInLength = 1.0
-                atcanim.easeOutMin = 1.0
-                atcanim.easeOutMax = 1.0
-                atcanim.easeOutLength = 1.0
+        sdl_name = bo.plasma_modifiers.animation.obj_sdl_anim
+        if sdl_name:
+            atcanim.globalVarName = sdl_name
+        elif sdl_name is None:
+            # Fixme? Not sure if we really need to expose this...
+            atcanim.easeInMin = 1.0
+            atcanim.easeInMax = 1.0
+            atcanim.easeInLength = 1.0
+            atcanim.easeOutMin = 1.0
+            atcanim.easeOutMax = 1.0
+            atcanim.easeOutLength = 1.0
 
     def _convert_camera_animation(self, bo, so, obj_fcurves, data_fcurves):
         if data_fcurves: