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Should ghosts be able to go through walls?

Ghosts can only change direction at intersections. Otherwise it's just not Pac-Man. It's one of the many many other maze games from this time period. Pac-Man means something just as much as "vintage maze game" means something.

The original ghosts had specifically written patterns: Blinky chases pac man where he is. Pinky targets 4 spaces in front of you. Inky targets based on Blinky and Pac's positions. Clyde sticks to a corner until you get too close.

They only reverse on their own when the mode changes or you get a power pellet, otherwise they have to wait until a corner, otherwise you end up with behavior like you see in this where you both quickly dance back and forth on the otherside of a wall