these too

tools/build/sprite/sprites.py

@@ -253,8 +253,6 @@ def player_xml_to_bytes(xml: ET.Element, asset_stack: Tuple[Path, ...]) -> List[
  raster_bytes_back: bytes = b""
  raster_offset = 0
  for raster_xml in xml[1]:
- if "back" in raster_xml.attrib:
- has_back = True
  r = player_raster_from_xml(raster_xml, back=False)
  raster_bytes += struct.pack(">IBBBB", raster_offset, r.width, r.height, r.palette_idx, 0xFF)
 
@@ -343,13 +341,6 @@ def player_xml_to_bytes(xml: ET.Element, asset_stack: Tuple[Path, ...]) -> List[
  return ret
 
 
-def xml_has_back(xml: ET.Element) -> bool:
- for raster_xml in xml[1]:
- if "back" in raster_xml.attrib:
- return True
- return False
-
-
 def write_player_sprite_header(
  sprite_order: List[str],
  out_file: Path,
@@ -365,7 +356,7 @@ def write_player_sprite_header(
 
  for sprite_name in sprite_order:
  sprite_xml = PLAYER_XML_CACHE[sprite_name]
- has_back = xml_has_back(sprite_xml)
+ has_back = sprite_xml.attrib[HAS_BACK_XML] == "true"
 
  player_sprites[f"SPR_{sprite_name}"] = sprite_id
  player_rasters[sprite_name] = {}