ok found it in editor
here’s the default code:
# In this level the evilstone is bad! Avoid them walking the other direction.
evilstone = hero.findNearestItem()
pos = evilstone.pos
if pos.x == 34:
# If the evilstone is on the left, go to the right side.
# If the evilstone is on the right, go to the left side.
# If there's no evilstone, go to the middle.
Just do what it says: if the lightstone(item) is on the left, you moveXY to the right mark. If it’s on the right, you MoveXY to the left mark. If there is no item, moveXY to center mark.