# get render distance
# for each current chunk +- render distance (and not in scoreboard)
  # check for end_portal_frame
    # get positions
  # fill chunk with air
  # re-place end_portal_frame
  # set scoreboard values to 1 for processed chunk

execute as @a[predicate=vanilla_skyblock:in_nether] unless score initialized_nether vanilla_skyblock_data matches 1 run function vanilla_skyblock:initialize_nether