#solid block? invalid move
execute unless block ~ ~ ~ #bd:can_move run scoreboard players set global validMove 0
execute unless block ~ ~ ~ #bd:can_move run scoreboard players set global validMoveZPOS 0

#"pushable_one_only" block? invalid move
execute if block ~ ~ ~ #bd:pushable_one_only run scoreboard players set global validMove 0
execute if block ~ ~ ~ #bd:pushable_one_only run scoreboard players set global validMoveZPOS 0

#pushable block? recursion forward
execute if block ~ ~ ~ #bd:pushable positioned ~ ~ ~1 run function bd:movement/check_move/z_positive_push
execute if block ~ ~ ~ #bd:pushable_one_only positioned ~ ~ ~1 run function bd:movement/check_move/z_positive_no_recursion

#x-axis linked blocks must travel together
execute if block ~ ~ ~ #bd:x_axis_linked if block ~1 ~ ~ #bd:x_axis_linked positioned ~1 ~ ~1 run function bd:movement/check_move/z_positive_push
execute if block ~ ~ ~ #bd:x_axis_linked if block ~-1 ~ ~ #bd:x_axis_linked positioned ~-1 ~ ~1 run function bd:movement/check_move/z_positive_push