Fix potential wind object gotcha.

If a wind object is *not* animated but rather moved via logic nodes (eg
a Python script), then the previous logic wouldn't allow for the in-game
wind direction to change. It's important to check if the wind object has
a coordinate interface (can it move?) instead of if it's animated (did
the artist move it?).

korman/properties/modifiers/water.py

@@ -243,7 +243,7 @@ class PlasmaWaterModifier(idprops.IDPropMixin, PlasmaModifierProperties, bpy.typ
     def export(self, exporter, bo, so):
         waveset = exporter.mgr.find_create_object(plWaveSet7, name=bo.name, so=so)
         if self.wind_object:
-            if self.wind_object.plasma_object.enabled and self.wind_object.plasma_modifiers.animation.enabled:
+            if exporter.has_coordiface(self.wind_object):
                 waveset.refObj = exporter.mgr.find_create_key(plSceneObject, bl=self.wind_object)
                 waveset.setFlag(plWaveSet7.kHasRefObject, True)