I was using Modify your code, but this npc will pass through the wallI don't understand the question
did you make sure the NPC has the right flags and a reasonable hitbox in NPC.tbl
these are the settings I had in king story
it seems to work fine like this
OH! it working thank you
here it is
i add more Trolly other npc 126 is make like picI think the problem is your hitbox is too wide.