added file version and reserved data

README.md

@@ -10,17 +10,24 @@ Download the file [io_export_panim.py](https://raw.githubusercontent.com/Synphon
 
 The file format is a binary format that is designed to be as compact as possible. The following
 shows the format of the file. It's given as `field_name - type`. All data is stored in little endian byte order.
+At the moment only f32 frame values are supported.
 
 ```
-frames_per_second   - f32
+version                 : u32
+frames_per_second       : f32
+
 <repeat for all objects and custom properties>
-    object_name     - utf8 string, 0-terminated
-    property_name   - utf8 string, 0-terminated
-    frame_start     - u32
-    frame_end       - u32
-    value_type      - u8, character "i" / "f" for i32 / f32
+
+    object_name         : utf8 string, 0-terminated
+    property_name       : utf8 string, 0-terminated
+    frame_start         : u32
+    frame_end           : u32
+    value_type          : u8, not used currently. always 0.
+    reserved            : 32 bytes of unused per prop data reserved for future use
+    
     <repeat for every frame between frame_start until frame_end (including)>
-        value       - i32 / f32 depending on value_type
+        frame_value     : f32
     </repeat>
+    
 </repeat>
 ```

io_export_panim.py

@@ -1,7 +1,7 @@
 bl_info = {
     "name": "Export custom props anim (.panim)",
     "author": "Marc-Stefan Cassola (maccesch)",
-    "version": (1, 0, 0),
+    "version": (0, 2, 0),
     "blender": (3, 4, 0),
     "location": "File > Export > Custom Props Anim (.panim)",
     "description": "Export all animations of custom properties as a binary .panim file",
@@ -13,7 +13,6 @@
 import re
 import struct
 
-
 def i32(i):
     return struct.pack("<i", i)
 
@@ -25,11 +24,14 @@ def u32(i):
 def f32(f):
     return struct.pack("<f", f)
 
-
 def write_anim_data(context, filepath):
     print("Exporting custom props anim data...")
     f = open(filepath, 'wb')
 
+    major, minor, patch = bl_info["version"]
+    file_version = ((major * 1024) + minor) * 1024 + patch
+    f.write(u32(file_version))
+
     f.write(f32(bpy.data.scenes["Scene"].render.fps))
 
     pattern = re.compile(r'\["([^"]+)"\]')
@@ -52,16 +54,15 @@ def write_anim_data(context, filepath):
                 f.write(u32(frame_start))
                 f.write(u32(frame_end))
 
-                typ = b'i' if type(obj[name]) is int else b'f'
+                typ = b'\0' # TODO : support other types like vector values and so on
                 f.write(typ)
 
+                reserved_per_prop_data = b'\0' * 32
+                f.write(reserved_per_prop_data)
+
                 for frame in range(frame_start, frame_end + 1):
                     bpy.context.scene.frame_set(frame)
-
-                    if typ == b'i':
-                        f.write(i32(obj[name]))
-                    else:
-                        f.write(f32(obj[name]))
+                    f.write(f32(obj[name]))
 
     f.close()