Merge pull request #273 from Hoikas/logic_persistence

Update LogicWiz modifiers for deferred logic export.

korman/exporter/convert.py

@@ -15,8 +15,12 @@
 
 import bpy
 
+from collections import defaultdict
+from contextlib import ExitStack
+import functools
 from pathlib import Path
 
+from ..helpers import TemporaryObject
 from ..korlib import ConsoleToggler
 
 from PyHSPlasma import *
@@ -41,12 +45,12 @@ class Exporter:
         self._op = op # Blender export operator
         self._objects = []
         self.actors = set()
-        self.want_node_trees = {}
+        self.want_node_trees = defaultdict(set)
         self.exported_nodes = {}
 
     def run(self):
         log = logger.ExportVerboseLogger if self._op.verbose else logger.ExportProgressLogger
-        with ConsoleToggler(self._op.show_console), log(self._op.filepath) as self.report:
+        with ConsoleToggler(self._op.show_console), log(self._op.filepath) as self.report, ExitStack() as self.exit_stack:
             # Step 0: Init export resmgr and stuff
             self.mgr = manager.ExportManager(self)
             self.mesh = mesh.MeshConverter(self)
@@ -64,6 +68,7 @@ class Exporter:
             self.mesh.add_progress_presteps(self.report)
             self.report.progress_add_step("Collecting Objects")
             self.report.progress_add_step("Verify Competence")
+            self.report.progress_add_step("Touching the Intangible")
             self.report.progress_add_step("Harvesting Actors")
             if self._op.lighting_method != "skip":
                 etlight.LightBaker.add_progress_steps(self.report)
@@ -89,6 +94,10 @@ class Exporter:
                 #           is no ruddy funny business going on.
                 self._check_sanity()
 
+                # Step 2.2: Run through all the objects again and ask them to "pre_export" themselves.
+                #           In other words, generate any ephemeral Blender objects that need to be exported.
+                self._pre_export_scene_objects()
+
                 # Step 2.5: Run through all the objects we collected in Step 2 and see if any relationships
                 #           that the artist made requires something to have a CoordinateInterface
                 self._harvest_actors()
@@ -381,6 +390,57 @@ class Exporter:
                     proc(self, bl_obj, sceneobject)
             inc_progress()
 
+    def _pre_export_scene_objects(self):
+        self.report.progress_advance()
+        self.report.progress_range = len(self._objects)
+        inc_progress = self.report.progress_increment
+        self.report.msg("\nGenerating export dependency objects...")
+
+        # New objects may be generate during this process; they will be appended at the end.
+        new_objects = []
+
+        @functools.singledispatch
+        def handle_temporary(temporary, parent):
+            raise RuntimeError("Temporary object of type '{}' generated by '{}' was unhandled".format(temporary.__class__, parent.name))
+
+        @handle_temporary.register(bpy.types.Object)
+        def _(temporary, parent):
+            self.exit_stack.enter_context(TemporaryObject(temporary, bpy.data.objects.remove))
+            self.report.msg("'{}': generated Object '{}' (Plasma Object: {})", parent.name,
+                            temporary.name, temporary.plasma_object.enabled, indent=1)
+            if temporary.plasma_object.enabled:
+                new_objects.append(temporary)
+
+                # If the object is marked as a Plasma Object, be sure that we go into the same page
+                # as the requestor, unless the modifier decided it knows better.
+                if not temporary.plasma_object.property_set("page"):
+                    temporary.plasma_object.page = parent.plasma_object.page
+
+                # Wow, recursively generated objects. Aren't you special?
+                for mod in temporary.plasma_modifiers.modifiers:
+                    mod.sanity_check()
+                do_pre_export(temporary)
+
+        @handle_temporary.register(bpy.types.NodeTree)
+        def _(temporary, parent):
+            self.exit_stack.enter_context(TemporaryObject(temporary, bpy.data.node_groups.remove))
+            self.report.msg("'{}' generated NodeTree '{}'", parent.name, temporary.name)
+            if temporary.bl_idname == "PlasmaNodeTree":
+                parent_so = self.mgr.find_create_object(plSceneObject, bl=parent)
+                self.want_node_trees[temporary.name].add((parent, parent_so))
+
+        def do_pre_export(bo):
+            for mod in bo.plasma_modifiers.modifiers:
+                for i in filter(None, mod.pre_export(self, bo)):
+                    handle_temporary(i, bo)
+
+        for bl_obj in self._objects:
+            do_pre_export(bl_obj)
+            inc_progress()
+
+        self.report.msg("... {} new object(s) were generated!", len(new_objects))
+        self._objects += new_objects
+
     def _pack_ancillary_python(self):
         texts = bpy.data.texts
         self.report.progress_advance()

korman/exporter/utils.py

@@ -15,7 +15,8 @@
 
 import bmesh
 import bpy
-from typing import Callable
+
+from typing import Callable, Iterator, Tuple
 from contextlib import contextmanager
 
 from PyHSPlasma import *
@@ -73,7 +74,7 @@ def bmesh_temporary_object(name : str, factory : Callable, page_name : str=None)
         bpy.context.scene.objects.unlink(obj)
 
 @contextmanager
-def bmesh_object(name : str):
+def bmesh_object(name: str) -> Iterator[Tuple[bpy.types.Object, bmesh.types.BMesh]]:
     """Creates an object and mesh that will be removed if the context is exited
        due to an error"""
     mesh = bpy.data.meshes.new(name)

korman/operators/op_modifier.py

@@ -346,7 +346,7 @@ class ModifierLogicWizOperator(ModifierOperator, bpy.types.Operator):
             print("WRN: This modifier is not actually enabled!")
 
         start = time.process_time()
-        mod.logicwiz(obj)
+        mod.create_logic(obj)
         end = time.process_time()
         print("\nLogicWiz finished in {:.2f} seconds".format(end-start))
         return {"FINISHED"}

korman/properties/modifiers/avatar.py

@@ -115,19 +115,9 @@ class PlasmaSittingBehavior(idprops.IDPropObjectMixin, PlasmaModifierProperties,
                                  description="How far away we will tolerate the avatar facing the clickable",
                                  min=-180, max=180, default=45)
 
-    def export(self, exporter, bo, so):
-        # 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))
-
-        # Generate the logic nodes now
-        with self.generate_logic(bo) as tree:
-            tree.export(exporter, bo, so)
-
     def harvest_actors(self):
         if self.facing_enabled:
-            return (self.clickable_object.name,)
-        return ()
+            yield self.clickable_object.name
 
     def logicwiz(self, bo, tree):
         nodes = tree.nodes
@@ -177,3 +167,8 @@ class PlasmaSittingBehavior(idprops.IDPropObjectMixin, PlasmaModifierProperties,
     def requires_actor(self):
         # This should be an empty, really...
         return True
+
+    def sanity_check(self):
+        # 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/base.py

@@ -13,10 +13,11 @@
 #    You should have received a copy of the GNU General Public License
 #    along with Korman.  If not, see <http://www.gnu.org/licenses/>.
 
-import abc
 import bpy
 from bpy.props import *
-from contextlib import contextmanager
+
+import abc
+from typing import Any, Dict, Generator
 
 class PlasmaModifierProperties(bpy.types.PropertyGroup):
     @property
@@ -49,6 +50,13 @@ class PlasmaModifierProperties(bpy.types.PropertyGroup):
     def enabled(self):
         return self.display_order >= 0
 
+    def export(self, exporter, bo, so):
+        """This is the main phase of the modifier export where most, if not all, PRP objects should
+           be generated. No new Blender objects should be created unless their lifespan is constrained
+           to the duration of this method.
+        """
+        pass
+
     @property
     def face_sort(self):
         """Indicates that the geometry's faces should be sorted by the engine"""
@@ -72,6 +80,14 @@ class PlasmaModifierProperties(bpy.types.PropertyGroup):
            Drawables that will render in the same pass"""
         return False
 
+    def pre_export(self, exporter, bo: bpy.types.Object) -> Generator:
+        """This is the first phase of the modifier export; allowing modifiers to create additonal
+           objects or logic nodes to be used by the exporter. To do so, overload this method
+           and yield any Blender ID from your method. That ID will then be exported and deleted
+           when the export completes. PRP objects should generally not be exported in this phase.
+        """
+        yield
+
     @property
     def requires_actor(self):
         """Indicates if this modifier requires the object to be a movable actor"""
@@ -96,25 +112,42 @@ class PlasmaModifierProperties(bpy.types.PropertyGroup):
 
 
 class PlasmaModifierLogicWiz:
-    @contextmanager
-    def generate_logic(self, bo, **kwargs):
+    def convert_logic(self, bo, **kwargs):
+        """Creates, converts, and returns an unmanaged NodeTree for this logic wizard. If the wizard
+           fails during conversion, the temporary tree is deleted for you. However, on success, you
+           are responsible for removing the tree from Blender, if applicable."""
         name = kwargs.pop("name", self.key_name)
         assert not "tree" in kwargs
         tree = bpy.data.node_groups.new(name, "PlasmaNodeTree")
         kwargs["tree"] = tree
         try:
             self.logicwiz(bo, **kwargs)
-            yield tree
-        finally:
+        except:
             bpy.data.node_groups.remove(tree)
+            raise
+        else:
+            return tree
+
+    def _create_python_file_node(self, tree, filename: str, attributes: Dict[str, Any]) -> bpy.types.Node:
+        pfm_node = tree.nodes.new("PlasmaPythonFileNode")
+        with pfm_node.NoUpdate():
+            pfm_node.filename = filename
+            for attr in attributes:
+                new_attr = pfm_node.attributes.add()
+                new_attr.attribute_id = attr["id"]
+                new_attr.attribute_type = attr["type"]
+                new_attr.attribute_name = attr["name"]
+        pfm_node.update()
+        return pfm_node
 
     @abc.abstractmethod
     def logicwiz(self, bo, tree):
         pass
 
-    def export_logic(self, exporter, bo, so, **kwargs):
-        with self.generate_logic(bo, **kwargs) as tree:
-            tree.export(exporter, bo, so)
+    def pre_export(self, exporter, bo):
+        """Default implementation of the pre_export phase for logic wizards that simply triggers
+           the logic nodes to be created and for their export to be scheduled."""
+        yield self.convert_logic(bo)
 
 
 class PlasmaModifierUpgradable:

korman/properties/modifiers/gui.py

@@ -25,8 +25,6 @@ from ...addon_prefs import game_versions
 from ...exporter import ExportError, utils
 from .base import PlasmaModifierProperties, PlasmaModifierLogicWiz, PlasmaModifierUpgradable
 from ... import idprops
-from ...helpers import TemporaryObject
-
 
 journal_pfms = {
     pvPots : {
@@ -198,7 +196,7 @@ class PlasmaJournalBookModifier(PlasmaModifierProperties, PlasmaModifierLogicWiz
                                       get=_get_translation, set=_set_translation,
                                       options=set())
 
-    def export(self, exporter, bo, so):
+    def pre_export(self, exporter, bo):
         our_versions = (globals()[j] for j in self.versions)
         version = exporter.mgr.getVer()
         if version not in our_versions:
@@ -217,57 +215,32 @@ class PlasmaJournalBookModifier(PlasmaModifierProperties, PlasmaModifierLogicWiz
             exporter.locman.add_journal(self.key_name, i.language, i.text_id, indent=2)
 
         if self.clickable_region is None:
-            # Create a region for the clickable's condition
-            rgn_mesh = bpy.data.meshes.new("{}_Journal_ClkRgn".format(self.key_name))
-            self.temp_rgn = bpy.data.objects.new("{}_Journal_ClkRgn".format(self.key_name), rgn_mesh)
-            bm = bmesh.new()
+            with utils.bmesh_object("{}_Journal_ClkRgn".format(self.key_name)) as (rgn_obj, bm):
                 bmesh.ops.create_cube(bm, size=(6.0))
-            bmesh.ops.transform(bm, matrix=mathutils.Matrix.Translation(bo.location - self.temp_rgn.location), space=self.temp_rgn.matrix_world, verts=bm.verts)
-            bm.to_mesh(rgn_mesh)
-            bm.free()
-
-            # No need to enable the object as a Plasma object; we're exported automatically as part of the node tree.
-            # It does need a page, however, so we'll put it in the same place as the journal object itself.
-            self.temp_rgn.plasma_object.page = bo.plasma_object.page
-            bpy.context.scene.objects.link(self.temp_rgn)
+                bmesh.ops.transform(bm, matrix=mathutils.Matrix.Translation(bo.location - rgn_obj.location),
+                                    space=rgn_obj.matrix_world, verts=bm.verts)
+                rgn_obj.plasma_object.enabled = True
+                rgn_obj.hide_render = True
+            yield rgn_obj
         else:
             # Use the region provided
-            self.temp_rgn = self.clickable_region
+            rgn_obj = self.clickable_region
 
         # Generate the logic nodes
-        with self.generate_logic(bo, age_name=exporter.age_name, version=version) as tree:
-            tree.export(exporter, bo, so)
-
-        # Get rid of our temporary clickable region
-        if self.clickable_region is None:
-            bpy.context.scene.objects.unlink(self.temp_rgn)
-
-    def logicwiz(self, bo, tree, age_name, version):
-        nodes = tree.nodes
+        yield self.convert_logic(bo, age_name=exporter.age_name, rgn_obj=rgn_obj, version=version)
 
+    def logicwiz(self, bo, tree, age_name, rgn_obj, version):
         # Assign journal script based on target version
         journal_pfm = journal_pfms[version]
-        journalnode = nodes.new("PlasmaPythonFileNode")
-        with journalnode.NoUpdate():
-            journalnode.filename = journal_pfm["filename"]
-
-            # Manually add required attributes to the PFM
-            journal_attribs = journal_pfm["attribs"]
-            for attr in journal_attribs:
-                new_attr = journalnode.attributes.add()
-                new_attr.attribute_id = attr["id"]
-                new_attr.attribute_type = attr["type"]
-                new_attr.attribute_name = attr["name"]
-        journalnode.update()
-
+        journalnode = self._create_python_file_node(tree, journal_pfm["filename"], journal_pfm["attribs"])
         if version <= pvPots:
-            self._create_pots_nodes(bo, nodes, journalnode, age_name)
+            self._create_pots_nodes(bo, tree.nodes, journalnode, age_name, rgn_obj)
         else:
-            self._create_moul_nodes(bo, nodes, journalnode, age_name)
+            self._create_moul_nodes(bo, tree.nodes, journalnode, age_name, rgn_obj)
 
-    def _create_pots_nodes(self, clickable_object, nodes, journalnode, age_name):
+    def _create_pots_nodes(self, clickable_object, nodes, journalnode, age_name, rgn_obj):
         clickable_region = nodes.new("PlasmaClickableRegionNode")
-        clickable_region.region_object = self.temp_rgn
+        clickable_region.region_object = rgn_obj
 
         facing_object = nodes.new("PlasmaFacingTargetNode")
         facing_object.directional = False
@@ -295,9 +268,9 @@ class PlasmaJournalBookModifier(PlasmaModifierProperties, PlasmaModifierLogicWiz
         height.link_output(journalnode, "pfm", "BookHeight")
         height.value_float = self.book_scale_h / 100.0
 
-    def _create_moul_nodes(self, clickable_object, nodes, journalnode, age_name):
+    def _create_moul_nodes(self, clickable_object, nodes, journalnode, age_name, rgn_obj):
         clickable_region = nodes.new("PlasmaClickableRegionNode")
-        clickable_region.region_object = self.temp_rgn
+        clickable_region.region_object = rgn_obj
 
         facing_object = nodes.new("PlasmaFacingTargetNode")
         facing_object.directional = False
@@ -456,22 +429,33 @@ class PlasmaLinkingBookModifier(PlasmaModifierProperties, PlasmaModifierLogicWiz
                           default=255,
                           subtype="UNSIGNED")
 
-    def export(self, exporter, bo, so):
-        our_versions = (globals()[j] for j in self.versions)
-        version = exporter.mgr.getVer()
-        if version not in our_versions:
+    def _check_version(self, *args) -> bool:
+        our_versions = frozenset((globals()[j] for j in self.versions))
+        return frozenset(args) & our_versions
+
+    def pre_export(self, exporter, bo):
+        if not self._check_version(exporter.mgr.getVer()):
             # We aren't needed here
             exporter.report.port("Object '{}' has a LinkingBookMod not enabled for export to the selected engine.  Skipping.",
-                                 bo.name, indent=2)
+                                 self.id_data.name, indent=2)
             return
 
-        if self.clickable is None:
-            raise ExportError("{}: Linking Book modifier requires a clickable!", bo.name)
+        # Auto-generate a six-foot cube region around the clickable if none was provided.
+        if self.clickable_region is None:
+            with utils.bmesh_object("{}_LinkingBook_ClkRgn".format(self.key_name)) as (rgn_obj, bm):
+                bmesh.ops.create_cube(bm, size=(6.0))
+                rgn_offset = mathutils.Matrix.Translation(self.clickable.location - bo.location)
+                bmesh.ops.transform(bm, matrix=rgn_offset, space=bo.matrix_world, verts=bm.verts)
+                rgn_obj.plasma_object.enabled = True
+                rgn_obj.hide_render = True
+            yield rgn_obj
+        else:
+            rgn_obj = self.clickable_region
 
-        if self.seek_point is None:
-            raise ExportError("{}: Linking Book modifier requires a seek point!", bo.name)
+        yield self.convert_logic(bo, age_name=exporter.age_name, version=exporter.mgr.getVer(), region=rgn_obj)
 
-        if version <= pvPots:
+    def export(self, exporter, bo, so):
+        if self._check_version(pvPrime, pvPots):
             # Create ImageLibraryMod in which to store the Cover, Linking Panel, and Stamp images
             ilmod = exporter.mgr.find_create_object(plImageLibMod, so=so, name=self.key_name)
 
@@ -481,46 +465,18 @@ class PlasmaLinkingBookModifier(PlasmaModifierProperties, PlasmaModifierLogicWiz
                 exporter.mesh.material.export_prepared_image(owner=ilmod, image=image,
                                                              allowed_formats={"JPG", "PNG"}, extension="hsm")
 
-        # Auto-generate a six-foot cube region around the clickable if none was provided.
-        if self.clickable_region is None:
-            # Create a region for the clickable's condition
-            def _make_rgn(bm):
-                bmesh.ops.create_cube(bm, size=(6.0))
-                rgn_offset = mathutils.Matrix.Translation(self.clickable.location - bo.location)
-                bmesh.ops.transform(bm, matrix=rgn_offset, space=bo.matrix_world, verts=bm.verts)
-
-            with utils.bmesh_temporary_object("{}_LinkingBook_ClkRgn".format(self.key_name),
-                                              _make_rgn, self.clickable.plasma_object.page) as temp_rgn:
-                # Generate the logic nodes
-                self.export_logic(exporter, bo, so, age_name=exporter.age_name, version=version,
-                                  region=temp_rgn)
-        else:
-            # Generate the logic nodes
-            self.export_logic(exporter, bo, so, age_name=exporter.age_name, version=version,
-                              region=self.clickable_region)
+    def harvest_actors(self):
+        if self.seek_point is not None:
+            yield self.seek_point.name
 
     def logicwiz(self, bo, tree, age_name, version, region):
-        nodes = tree.nodes
-
         # Assign linking book script based on target version
         linking_pfm = linking_pfms[version]
-        linkingnode = nodes.new("PlasmaPythonFileNode")
-        with linkingnode.NoUpdate():
-            linkingnode.filename = linking_pfm["filename"]
-
-            # Manually add required attributes to the PFM
-            linking_attribs = linking_pfm["attribs"]
-            for attr in linking_attribs:
-                new_attr = linkingnode.attributes.add()
-                new_attr.attribute_id = attr["id"]
-                new_attr.attribute_type = attr["type"]
-                new_attr.attribute_name = attr["name"]
-        linkingnode.update()
-
+        linkingnode = self._create_python_file_node(tree, linking_pfm["filename"], linking_pfm["attribs"])
         if version <= pvPots:
-            self._create_pots_nodes(bo, nodes, linkingnode, age_name, region)
+            self._create_pots_nodes(bo, tree.nodes, linkingnode, age_name, region)
         else:
-            self._create_moul_nodes(bo, nodes, linkingnode, age_name, region)
+            self._create_moul_nodes(bo, tree.nodes, linkingnode, age_name, region)
 
     def _create_pots_nodes(self, clickable_object, nodes, linkingnode, age_name, clk_region):
         # Clickable
@@ -655,6 +611,8 @@ class PlasmaLinkingBookModifier(PlasmaModifierProperties, PlasmaModifierLogicWiz
         linking_panel_name.value = self.link_destination if self.link_destination else self.age_name
         linking_panel_name.link_output(linkingnode, "pfm", "TargetAge")
 
-    def harvest_actors(self):
-        if self.seek_point is not None:
-            yield self.seek_point.name
+    def sanity_check(self):
+        if self.clickable is None:
+            raise ExportError("{}: Linking Book modifier requires a clickable!", self.id_data.name)
+        if self.seek_point is None:
+            raise ExportError("{}: Linking Book modifier requires a seek point!", self.id_data.name)

korman/properties/modifiers/logic.py

@@ -60,7 +60,7 @@ class PlasmaAdvancedLogic(PlasmaModifierProperties):
                     raise ExportError("'{}': Advanced Logic is missing a node tree for '{}'".format(bo.name, i.name))
 
                 # Defer node tree export until all trees are harvested.
-                exporter.want_node_trees.setdefault(i.node_tree.name, set()).add((bo, so))
+                exporter.want_node_trees[i.node_tree.name].add((bo, so))
 
     def harvest_actors(self):
         actors = set()

korman/properties/modifiers/region.py

@@ -143,10 +143,6 @@ class PlasmaFootstepRegion(PlasmaModifierProperties, PlasmaModifierLogicWiz):
                           items=bounds_types,
                           default="hull")
 
-    def export(self, exporter, bo, so):
-        with self.generate_logic(bo) as tree:
-            tree.export(exporter, bo, so)
-
     def logicwiz(self, bo, tree):
         nodes = tree.nodes