For example, an wait until block.
wait until <Maze complete>Or an repeating block.
repeat until <touching [Walls v] ?>I can put my pack and mazers.
point towards [Cursor mouse v]
move (5) steps
if on edge, bounce
set rotation style [Do not rotate v]
say [You touch the walls is game over] for (2) secs
when [Arrow keys v] key pressed
point in direction (Arrow pressed in keyboard v)