#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 validMoveXNEG 0

#pushable block? recursion forward
execute if block ~ ~ ~ #bd:pushable positioned ~-1 ~ ~ run function bd:movement/check_move/x_negative_push
execute if block ~ ~ ~ #bd:pushable_one_only positioned ~-1 ~ ~ run function bd:movement/check_move/x_negative_no_recursion

#z-axis linked blocks must travel together
execute if block ~ ~ ~ #bd:z_axis_linked if block ~ ~ ~-1 #bd:z_axis_linked positioned ~-1 ~ ~-1 run function bd:movement/check_move/x_negative_push
execute if block ~ ~ ~ #bd:z_axis_linked if block ~ ~ ~1 #bd:z_axis_linked positioned ~-1 ~ ~1 run function bd:movement/check_move/x_negative_push