advanced example

tools/blender_export.py

@@ -1,4 +1,4 @@
-"""Executed by Blender, never by Unreal. Export an evaluated, joined static mesh."""
+"""Executed by Blender: static GLB or skinned FBX with the active animation."""
 import argparse
 from pathlib import Path
 import sys
@@ -10,6 +10,7 @@ def main():
     parser = argparse.ArgumentParser()
     parser.add_argument("--output", required=True)
     parser.add_argument("--collection", default="Character")
+    parser.add_argument("--skeletal", action="store_true")
     args = parser.parse_args(sys.argv[sys.argv.index("--") + 1:])
     collection = bpy.data.collections.get(args.collection)
     if collection is None:
@@ -18,6 +19,26 @@ def main():
     if not meshes:
         raise RuntimeError("Kolekcja Character nie zawiera siatek.")
     bpy.ops.object.select_all(action="DESELECT")
+    if args.skeletal:
+        armatures = {modifier.object for obj in meshes for modifier in obj.modifiers
+                     if modifier.type == "ARMATURE" and modifier.object is not None}
+        if len(armatures) != 1:
+            raise RuntimeError("Eksport szkieletowy wymaga jednego Armature przypisanego do siatek.")
+        armature = next(iter(armatures))
+        for obj in [*meshes, armature]:
+            obj.hide_set(False)
+            obj.select_set(True)
+        bpy.context.view_layer.objects.active = armature
+        output = Path(args.output).resolve()
+        output.parent.mkdir(parents=True, exist_ok=True)
+        bpy.ops.export_scene.fbx(
+            filepath=str(output), use_selection=True, object_types={"MESH", "ARMATURE"},
+            add_leaf_bones=False, use_armature_deform_only=False, bake_anim=True,
+            bake_anim_use_all_actions=False, bake_anim_use_nla_strips=False,
+            bake_anim_force_startend_keying=True, bake_anim_simplify_factor=0.0,
+            axis_forward="-Y", axis_up="Z", path_mode="COPY", embed_textures=True)
+        print("WORKSHOP_EXPORTED=" + str(output))
+        return
     depsgraph = bpy.context.evaluated_depsgraph_get()
     copies = []
     for obj in meshes: