Export CI for plFadeOpacityMods.

plFadeOpacityMods require a Coordinate Interface to correctly calculate LOS.

korman/properties/modifiers/render.py

@@ -265,6 +265,13 @@ class PlasmaFadeMod(PlasmaModifierProperties):
             mod.farOpaq = self.far_opaq
             mod.farTrans = self.far_trans
             
+    @property
+    def requires_actor(self):
+        if self.fader_type == "FadeOpacity":
+            return True
+        else:
+            return False
+
 
 class PlasmaFollowMod(idprops.IDPropObjectMixin, PlasmaModifierProperties):
     pl_id = "followmod"