Newbie Modding Question

Berrin

Newcomer
Hi
I'm exploring mod development and have a question.
I think I understand how to create and add a new map to the game using a content pack. My question is:
Can I change tiles in a vanilla map using json and (more importantly) should I?
I want to make a corridor on the vanilla map by replacing tiles on it from impassable to passable. Hopefully that makes sense.
 
Top