Ensure note popups don't clobber each other.

Fail fast if someone sets up multiple note popups with conflicting
settings. This will allow us to obey the principle of least surprise.

korman/exporter/convert.py

@@ -229,7 +229,7 @@ def _check_sanity(self):
                 for mod in bl_obj.plasma_modifiers.modifiers:
                     fn = getattr(mod, "sanity_check", None)
                     if fn is not None:
-                        fn()
+                        fn(self)
                 inc_progress()
         self.report.msg("... Age is grinning and holding a spatula. Must be OK, then.")
 
@@ -502,7 +502,9 @@ def _(temporary, parent):
                 # Wow, recursively generated objects. Aren't you special?
                 with indent():
                     for mod in temporary.plasma_modifiers.modifiers:
-                        mod.sanity_check()
+                        fn = getattr(mod, "sanity_check", None)
+                        if fn is not None:
+                            fn(self)
                     do_pre_export(temporary)
             return temporary
 

korman/exporter/gui.py

@@ -49,10 +49,12 @@ class GuiConverter:
 
     if TYPE_CHECKING:
         _parent: weakref.ref[Exporter] = ...
+        _pages: Dict[str, Any] = ...
         _mods_exported: Set[str] = ...
 
     def __init__(self, parent: Optional[Exporter] = None):
         self._parent = weakref.ref(parent) if parent is not None else None
+        self._pages = {}
         self._mods_exported = set()
 
         # Go ahead and prepare the GUI transparent material for future use.
@@ -206,6 +208,12 @@ def convert_post_effect_matrices(self, camera_matrix: mathutils.Matrix) -> PostE
             w2c[2, i] *= -1.0
         return PostEffectModMatrices(c2w, w2c)
 
+    def check_pre_export(self, name: str, **kwargs):
+        previous = self._pages.setdefault(name, kwargs)
+        if previous != kwargs:
+            diff = set(previous.items()) - set(kwargs.items())
+            raise ExportError(f"GUI Page '{name}' has target modifiers with conflicting settings:\n{diff}")
+
     def create_note_gui(self, gui_page: str, gui_camera: bpy.types.Object):
         if not gui_page in self._mods_exported:
             guidialog_object = utils.create_empty_object(f"{gui_page}_NoteDialog")

korman/properties/modifiers/anim.py

@@ -42,7 +42,7 @@ def blender_action(self):
                 return None
         raise ExportError("'{}': Object has an animation modifier but is not animated".format(bo.name))
 
-    def sanity_check(self) -> None:
+    def sanity_check(self, exporter) -> None:
         if not self.id_data.plasma_object.has_animation_data:
             raise ExportError("'{}': Has an animation modifier but no animation data.", self.id_data.name)
 

korman/properties/modifiers/avatar.py

@@ -189,7 +189,7 @@ def requires_actor(self):
         # This should be an empty, really...
         return True
 
-    def sanity_check(self):
+    def sanity_check(self, exporter):
         # The user absolutely MUST specify a clickable or this won't export worth crap.
         if self.clickable_object is None:
             raise ExportError("'{}': Sitting Behavior's clickable object is invalid".format(self.key_name))

korman/properties/modifiers/game_gui.py

@@ -70,7 +70,7 @@ def is_game_gui_control(cls) -> bool:
     def requires_dyntext(self) -> bool:
         return False
 
-    def sanity_check(self):
+    def sanity_check(self, exporter):
         age: PlasmaAge = bpy.context.scene.world.plasma_age
 
         # Game GUI modifiers must be attached to objects in a GUI page, ONLY

korman/properties/modifiers/gui.py

@@ -660,7 +660,7 @@ def _create_moul_nodes(self, clickable_object, nodes, linkingnode, age_name):
             share.link_input(share_anim_stage, "stage", "stage_refs")
             share.link_output(linkingnode, "hosts", "shareBookSeek")
 
-    def sanity_check(self):
+    def sanity_check(self, exporter):
         if self.clickable is None:
             raise ExportError("{}: Linking Book modifier requires a clickable!", self.id_data.name)
         if self.seek_point is None:
@@ -724,11 +724,15 @@ def clickable_object(self) -> Optional[bpy.types.Object]:
         if self.id_data.type == "MESH":
             return self.id_data
 
-    def sanity_check(self):
+    def sanity_check(self, exporter: Exporter):
         page_type = helpers.get_page_type(self.id_data.plasma_object.page)
         if page_type != "room":
             raise ExportError(f"Note Popup modifiers should be in a 'room' page, not a '{page_type}' page!")
 
+        # It's OK if multiple note popups point to the same GUI page,
+        # they just need to have the same camera.
+        exporter.gui.check_pre_export(self.gui_page, pl_id="note_popup", camera=self.gui_camera)
+
     def pre_export(self, exporter: Exporter, bo: bpy.types.Object):
         # The GUI converter will debounce duplicate GUI dialogs.
         yield from exporter.gui.create_note_gui(self.gui_page, self.gui_camera)

korman/properties/modifiers/logic.py

@@ -154,7 +154,7 @@ class PlasmaTelescope(PlasmaModifierProperties, PlasmaModifierLogicWiz):
                                     type=bpy.types.Object,
                                     poll=idprops.poll_camera_objects)
 
-    def sanity_check(self):
+    def sanity_check(self, exporter):
         if self.camera_object is None:
             raise ExportError(f"'{self.id_data.name}': Telescopes must specify a camera!")
 

korman/properties/modifiers/render.py

@@ -120,7 +120,7 @@ def iter_dependencies(self):
         for i in (j.blend_onto for j in self.dependencies if j.blend_onto is not None and j.enabled):
             yield i
 
-    def sanity_check(self):
+    def sanity_check(self, exporter):
         if self.has_circular_dependency:
             raise ExportError("'{}': Circular Render Dependency detected!".format(self.id_data.name))
 
@@ -770,7 +770,7 @@ def _create_nodes(self, bo, tree, *, age_name, version, material=None, clear_col
     def localization_set(self):
         return "DynaTexts"
 
-    def sanity_check(self):
+    def sanity_check(self, exporter):
         if self.texture is None:
             raise ExportError("'{}': Localized Text modifier requires a texture", self.id_data.name)
 

korman/properties/modifiers/sound.py

@@ -533,7 +533,7 @@ class PlasmaSoundEmitter(PlasmaModifierProperties):
     stereize_left = PointerProperty(type=bpy.types.Object, options={"HIDDEN", "SKIP_SAVE"})
     stereize_right = PointerProperty(type=bpy.types.Object, options={"HIDDEN", "SKIP_SAVE"})
 
-    def sanity_check(self):
+    def sanity_check(self, exporter):
         modifiers = self.id_data.plasma_modifiers
 
         # Sound emitters can potentially export sounds to more than one emitter SceneObject. Currently,