Set new type of animation

convert_old_anim_to_new.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+"""
+Convert an old single-mesh text animation file to the new multi-mesh text format.
+
+The only structural difference is that the new format wraps the mesh block
+between these two extra headers before the "===Vertices:" line:
+
+    === TOTAL MESHES TO EXPORT: 1 ===
+    === Mesh Object: Body ===
+
+Usage:
+    python convert_old_anim_to_new.py <input.txt> <output.txt> [mesh_name]
+
+If mesh_name is omitted, "Body" is used.
+"""
+
+import sys
+
+
+def convert(input_path, output_path, mesh_name="Body"):
+    with open(input_path, 'r', encoding='utf-8', errors='replace') as f:
+        lines = f.readlines()
+
+    # Find the first "===Vertices:" line -- that's where the bone block ends
+    # and the mesh block begins in the old format.
+    insert_at = None
+    for i, line in enumerate(lines):
+        if line.lstrip().startswith("===Vertices:"):
+            insert_at = i
+            break
+
+    if insert_at is None:
+        raise RuntimeError("Could not find '===Vertices:' line in input file")
+
+    header_lines = [
+        "=== TOTAL MESHES TO EXPORT: 1 ===\n",
+        f"=== Mesh Object: {mesh_name} ===\n",
+    ]
+
+    out_lines = lines[:insert_at] + header_lines + lines[insert_at:]
+
+    with open(output_path, 'w', encoding='utf-8') as out:
+        out.writelines(out_lines)
+
+    print(f"Converted: {input_path} -> {output_path} (mesh name: {mesh_name})")
+
+
+if __name__ == '__main__':
+    if len(sys.argv) not in (3, 4):
+        print(f"Usage: {sys.argv[0]} <input.txt> <output.txt> [mesh_name]")
+        sys.exit(1)
+
+    mesh_name = sys.argv[3] if len(sys.argv) == 4 else "Body"
+    convert(sys.argv[1], sys.argv[2], mesh_name)