Working on new animations

convert_anim_to_binary.py

@@ -5,11 +5,11 @@ Convert a text-based bone animation file to the BSAF binary format.
 Usage:
     python convert_anim_to_binary.py <input.txt> <output.bin>
 
-Binary format (BSAF v1) -- all values little-endian:
+Binary format (BSAF v2) -- all values little-endian:
 
     HEADER
         4 bytes   magic "BSAF"
-        uint32    version (1)
+        uint32    version (2)
 
     BONES
         uint32    numBones
@@ -21,6 +21,11 @@ Binary format (BSAF v1) -- all values little-endian:
             uint32       numChildren
             numChildren x int32  childIndices
 
+    BONE NAMES (v2+)
+        per bone:
+            uint32       nameLen
+            nameLen bytes  UTF-8 name (no terminator)
+
     VERTICES
         uint32    numVertices
         numVertices x 3 x float   positions
@@ -248,7 +253,7 @@ def convert(input_path, output_path):
     with open(output_path, 'wb') as out:
         # Header
         out.write(b'BSAF')
-        out.write(struct.pack('<I', 1))
+        out.write(struct.pack('<I', 2))
 
         # Bones
         out.write(struct.pack('<I', num_bones))
@@ -262,6 +267,12 @@ def convert(input_path, output_path):
             for c in b['children']:
                 out.write(struct.pack('<i', c))
 
+        # Bone names (v2+)
+        for name in bone_names:
+            name_bytes = name.encode('utf-8')
+            out.write(struct.pack('<I', len(name_bytes)))
+            out.write(name_bytes)
+
         # Vertices
         out.write(struct.pack('<I', num_vertices))
         for v in vertices: