v1.1.1: Patch p3d_maplib to fix CRLF line-ending map files

spawn_zone_tool.py

@@ -14,6 +14,33 @@
 from panda3d.core import Vec3
 from p3d_libmap.map_parser import MapParser
 
+_map_parser_empty_token_patch_applied = False
+
+
+def _patch_map_parser_token_skip_empty_segments() -> None:
+    """
+    MapParser ends a token on every whitespace byte, so CRLF (\r then \n), double
+    spaces, tabs, etc. can call token() twice in a row. The second call may see an
+    empty buffer and raise IndexError inside ENTITY / PROPERTY_VALUE. Patch here so
+    we do not fork p3d_libmap.
+    """
+    global _map_parser_empty_token_patch_applied
+    if _map_parser_empty_token_patch_applied:
+        return
+
+    _original_token = MapParser.token
+
+    def token(self):
+        if not self.comment and self.buffer != "//" and not self.buffer:
+            return
+        return _original_token(self)
+
+    MapParser.token = token  # type: ignore[method-assign]
+    _map_parser_empty_token_patch_applied = True
+
+
+_patch_map_parser_token_skip_empty_segments()
+
 ZONE_FORMAT_VERSION = "1.1.0"