execute align xz positioned ~0.5 ~ ~0.5 unless block ~ ~-1.2 ~ air if block ~ ~-0.25 ~ scaffolding run tp @s ~ ~-0.25 ~
execute align xz positioned ~0.5 ~ ~0.5 at @s unless block ~ ~-1.2 ~ air if block ~ ~-0.25 ~ scaffolding run tp @s ~ ~-0.25 ~