Skeleton for the exporter... It's only mildly evil

korman/__init__.py

@@ -34,8 +34,8 @@ def register():
     # This will auto-magically register all blender classes for us
     bpy.utils.register_module(__name__)
 
-    # We have to setup pointer props to our custom property groups ourselves,
-    # so let's go ahead and do that now.
+    # Sigh... Blender isn't totally automated.
+    operators.register()
     properties.register()
 
 def unregister():

korman/exporter.py

@@ -14,46 +14,147 @@
 #    along with Korman.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
+import os.path
 from PyHSPlasma import *
 
-class PlasmaExporter(bpy.types.Operator):
-    """Exports ages for Cyan Worlds' Plasma Engine"""
-
-    bl_idname = "export.plasma_age"
-    bl_label = "Export Age"
-
-    # Export specific props
-    pl_version = bpy.props.EnumProperty(
-        name="Version",
-        description="Version of the Plasma Engine to target",
-        default="pots", # This should be changed when moul is easier to target!
-        items=[
-            ("abm", "Ages Beyond Myst (63.11)", "Targets the original Uru (Live) game", 2),
-            ("pots", "Path of the Shell (63.12)", "Targets the most recent offline expansion pack", 1),
-            ("moul", "Myst Online: Uru Live (70.2)", "Targets the most recent online game", 0),
-            # I see no reason to even offer Myst 5...
-        ]
-    )
-
-    @classmethod
-    def poll(cls, context):
-        if context.object is not None:
-            return context.scene.render.engine == "PLASMA_GAME"
-
-    def execute(self, context):
-        # TODO
-        return {"FINISHED"}
-
-    def invoke(self, context, event):
-        # Called when a user hits "export" from the menu
-        # We will prompt them for the export info, then call execute()
-        context.window_manager.fileselect_add(self)
-        return {"RUNNING_MODAL"}
-
-
-# Add the export operator to the Export menu :)
-def menu_cb(self, context):
-    self.layout.operator_context = "INVOKE_DEFAULT"
-    self.layout.operator(PlasmaExporter.bl_idname, text="Plasma Age (.age)")
-def register():
-    bpy.types.INFO_MT_file_export.append(menu_cb)
+class ExportError(Exception):
+    def __init__(self, value="Undefined Export Error"):
+        self.value = value
+    def __str__(self):
+        return self.value
+
+class Exporter:
+    def __init__(self, op):
+        self._op = op # Blender operator
+
+        # This stuff doesn't need to be static
+        self._objects = []
+        self._pages = {}
+        self.texture_page = True
+
+    @property
+    def age_name(self):
+        return os.path.splitext(os.path.split(self._op.filepath)[1])[0]
+
+    def _create_page(self, name, id, builtin=False):
+        location = plLocation(self.version)
+        location.prefix = bpy.context.scene.world.plasma_age.seq_prefix
+        if builtin:
+            location.flags |= plLocation.kBuiltIn
+        location.page = id
+        self._pages[name] = location
+
+        info = plPageInfo()
+        info.age = self.age_name
+        info.page = name
+        info.location = location
+        self.mgr.AddPage(info)
+
+        if not builtin:
+            self._age_info.addPage((name, id, 0))
+            if self.version <= pvPots:
+                node = plSceneNode("%s_District_%s" % (self.age_name, name))
+            else:
+                node = plSceneNode("%s_%s" % (self.age_name, name))
+            self.mgr.AddObject(location, node)
+        return location
+
+    def get_textures_page(self, obj):
+        if self.pages["Textures"] is not None:
+            return self.pages["Textures"]
+        else:
+            return self.pages[obj.plasma_object.page]
+
+    @property
+    def version(self):
+        # I <3 Python
+        return globals()[self._op.version]
+
+    def run(self):
+        # Step 0: Init export resmgr and stuff
+        self.mgr = plResManager()
+        self.mgr.setVer(self.version)
+
+        # Step 1: Gather a list of objects that we need to export
+        #         We should do this first so we can sanity check
+        #         and give accurate progress reports
+        self._collect_objects()
+
+        # Step 2: Collect some age information
+        self._grab_age_info() # World Props -> plAgeInfo
+        for page in bpy.context.scene.world.plasma_age.pages:
+            self._create_page(page.name, page.seq_suffix)
+        self._sanity_check_pages()
+        self._generate_builtins() # Creates BuiltIn and Textures
+
+        # ... todo ...
+
+        # ... And finally... Write it all out!
+        self.mgr.WriteAge(self._op.filepath, self._age_info)
+        dir = os.path.split(self._op.filepath)[0]
+        for name, loc in self._pages.items():
+            page = self.mgr.FindPage(loc) # not cached because it's C++ owned
+            # I know that plAgeInfo has its own way of doing this, but we'd have
+            # to do some looping and stuff. This is easier.
+            if self.version <= pvMoul:
+                chapter = "_District_"
+            else:
+                chapter = "_"
+            f = os.path.join(dir, "%s%s%s.prp" % (self.age_name, chapter, name))
+            self.mgr.WritePage(f, page)
+
+    def _collect_objects(self):
+        for obj in bpy.data.objects:
+            if obj.plasma_object.export:
+                self._objects.append(obj)
+
+    def _grab_age_info(self):
+        self._age_info = bpy.context.scene.world.plasma_age.export()
+        self._age_info.name = self.age_name
+        self.mgr.AddAge(self._age_info)
+
+    def _sanity_check_pages(self):
+        """Ensure all objects are in valid pages and create the Default page if used"""
+        for obj in self._objects:
+            page = obj.plasma_object.page
+            if not page in self._pages and page == "":
+                # This object is in the default page... Init that.
+                for loc in self._pages.values():
+                    if not loc.page:
+                        self._pages[""] = loc
+                        break
+                else:
+                    # need to create default page
+                    self._pages[""] = self._create_page("Default", 0)
+            else:
+                # oh dear...
+                raise ExportError("Object '%s' in undefined page '%s'" % (obj.name, page))
+
+    def _generate_builtins(self):
+        # Find the highest two available negative suffixes for BuiltIn and Textures
+        # This should generally always resolve to -2 and -1
+        suffixes = []; _s = -1
+        while len(suffixes) != 2:
+            for location in self._pages.values():
+                if location.page == _s:
+                    break
+            else:
+                suffixes.append(_s)
+            _s -= 1
+
+        # Grunt work...
+        if self.version <= pvMoul:
+            builtin = self._create_page("BuiltIn", suffixes[1], True)
+            pfm = plPythonFileMod("VeryVerySpecialPythonFileMod")
+            pfm.filename = self.age_name
+            self.mgr.AddObject(builtin, pfm)
+            sdlhook = plSceneObject("AgeSDLHook")
+            sdlhook.addModifier(pfm.key)
+            self.mgr.AddObject(builtin, sdlhook)
+            self._pages["BuiltIn"] = builtin
+
+        if self._op.use_texture_page:
+            textures = self._create_page("Textures", suffixes[0], True)
+            self._pages["Textures"] = textures
+        else:
+            self._pages["Textures"] = None # probably easier than looping to find it

korman/operators/__init__.py

@@ -13,4 +13,8 @@
 #    You should have received a copy of the GNU General Public License
 #    along with Korman.  If not, see <http://www.gnu.org/licenses/>.
 
-from .op_world import *
+from . import op_export as exporter
+from . import op_world as world
+
+def register():
+    exporter.register()

korman/operators/op_export.py

@@ -0,0 +1,93 @@
+#    This file is part of Korman.
+#
+#    Korman is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    Korman is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with Korman.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import os, os.path
+from .. import exporter
+
+class ExportOperator(bpy.types.Operator):
+    """Exports ages for Cyan Worlds' Plasma Engine"""
+
+    bl_idname = "export.plasma_age"
+    bl_label = "Export Age"
+    bl_options = {"BLOCKING"}
+
+    # Export specific props
+    version = bpy.props.EnumProperty(
+        name="Version",
+        description="Version of the Plasma Engine to target",
+        default="pvPots", # This should be changed when moul is easier to target!
+        items=[
+            ("pvPrime", "Ages Beyond Myst (63.11)", "Targets the original Uru (Live) game", 2),
+            ("pvPots", "Path of the Shell (63.12)", "Targets the most recent offline expansion pack", 1),
+            ("pvMoul", "Myst Online: Uru Live (70)", "Targets the most recent online game", 0),
+            # I see no reason to even offer Myst 5...
+        ]
+    )
+    optimize = bpy.props.BoolProperty(name="Optimize Age",
+                                      description="Optimizes your age to run faster. This slows down export.")
+    use_texture_page = bpy.props.BoolProperty(name="Use Texture Page",
+                                              description="Exports all textures to a dedicated Textures page",
+                                              default=True)
+    filepath = bpy.props.StringProperty(subtype="FILE_PATH")
+
+    def _set_error(self, value):
+        self.has_reports = True
+        self.report = ({"ERROR"}, value)
+    error = property(fset=_set_error) # Can't use decorators here :(
+
+    @classmethod
+    def poll(cls, context):
+        if context.object is not None:
+            return context.scene.render.engine == "PLASMA_GAME"
+
+    def execute(self, context):
+        # Before we begin, do some basic sanity checking...
+        if self.filepath == "":
+            self.error = "No file specified"
+            return {"CANCELLED"}
+        else:
+            dir = os.path.split(self.filepath)[0]
+            if not os.path.exists(dir):
+                try:
+                    os.mkdirs(dir)
+                except os.error:
+                    self.error = "Failed to create export directory"
+                    return {"CANCELLED"}
+
+        # Separate blender operator and actual export logic for my sanity
+        e = exporter.Exporter(self)
+        try:
+            e.run()
+        except exporter.ExportError as error:
+            self.error = str(error)
+            return {"CANCELLED"}
+        else:
+            return {"FINISHED"}
+
+    def invoke(self, context, event):
+        # Called when a user hits "export" from the menu
+        # We will prompt them for the export info, then call execute()
+        context.window_manager.fileselect_add(self)
+        return {"RUNNING_MODAL"}
+
+
+# Add the export operator to the Export menu :)
+def menu_cb(self, context):
+    if context.scene.render.engine == "PLASMA_GAME":
+        self.layout.operator_context = "INVOKE_DEFAULT"
+        self.layout.operator(ExportOperator.bl_idname, text="Plasma Age (.age)")
+def register():
+    bpy.types.INFO_MT_file_export.append(menu_cb)

korman/properties/prop_world.py

@@ -15,6 +15,7 @@
 
 import bpy
 from bpy.props import *
+from PyHSPlasma import *
 
 class PlasmaFni(bpy.types.PropertyGroup):
     bl_idname = "world.plasma_fni"
@@ -56,8 +57,8 @@ class PlasmaPage(bpy.types.PropertyGroup):
             self.last_name = self.name
             return None
 
-        # Empty page names not allowed!
-        if self.name == "":
+        # There are some obviously bad page names
+        if self.name.lower() in ("", "builtin", "default", "textures"):
             self.make_default_name(self.seq_suffix)
             return None
 
@@ -112,3 +113,11 @@ class PlasmaAge(bpy.types.PropertyGroup):
 
     # Implementation details
     active_page_index = IntProperty(name="Active Page Index")
+
+    def export(self):
+        age = plAgeInfo()
+        age.dayLength = self.day_length
+        age.seqPrefix = self.seq_prefix
+
+        # Pages are added to the ResManager in the main exporter
+        return age