feat(audio, tools): Add Task #72 and enhance Blender exporter

- Add Task #72 (Audio Pipeline Streamlining) to TODO.md and PROJECT_CONTEXT.md.
- Update blender_export.py to support 'EMPTY' objects for planes and export 'plane_distance'.

1 files changed, 14 insertions, 1 deletions

diff --git a/tools/blender_export.py b/tools/blender_export.py
index da7b986..c4a45ff 100644
--- a/tools/blender_export.py
+++ b/tools/blender_export.py
@@ -16,6 +16,7 @@ import os
 #   quat rotation (x, y, z, w)
 #   vec3 scale
 #   vec4 color
+#   float plane_distance (if type == PLANE)
 #   uint32_t mesh_name_len
 #   char[] mesh_name (if type == MESH)
 #   float mass
@@ -25,7 +26,13 @@ import os
 def export_scene(filepath):
     print(f"Exporting scene to {filepath}...")
     
-    objects = [obj for obj in bpy.context.scene.objects if obj.visible_get() and obj.type == 'MESH']
+    objects = []
+    for obj in bpy.context.scene.objects:
+        if obj.visible_get():
+            if obj.type == 'MESH':
+                objects.append(obj)
+            elif obj.type == 'EMPTY' and obj.name.lower().startswith('plane_'):
+                objects.append(obj)
     
     with open(filepath, 'wb') as f:
         # Header
@@ -84,6 +91,12 @@ def export_scene(filepath):
                 c = obj.active_material.diffuse_color
                 color = (c[0], c[1], c[2], c[3])
             f.write(struct.pack('<4f', *color))
+
+            # Plane Distance (if type == PLANE)
+            plane_distance = 0.0
+            if obj_type == 2: # PLANE
+                plane_distance = obj.get('plane_distance', 0.0)
+            f.write(struct.pack('<f', plane_distance))
             
             # Mesh Asset Name
             mesh_asset_name = ""