scoreboard players add @s[scores={dummy_y=..-2}] dummy_y 2

execute unless score @s dummy_y matches ..-1 run function bd:control/warp/warp_to_saved_coords/z/_pos_or_neg
execute if score @s dummy_y matches ..-1 positioned ~ ~-1 ~ run function bd:control/warp/warp_to_saved_coords/z/_pos_or_neg