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What I would need to do is make 5 versions of every female body armor/clothing to fit the weight levels and make a script that will auto switch these outfits around when weight is gained. While I didn’t attempt anything related to this, I know a way to do it because of a different mod. The last piece of the puzzle is the visual aspect of weight gain. I would need to learn the other ways of adding dialogue before I can do this. This turned out to be a disaster because of how I directly edited vanilla quests in the editor (which can cause incompatibility issues). esp file to add more dialogue options to vanilla NPCs related to your current fat level and the appetite trait.
Experimental script (for me anyway) that replaces a specific manhole/hatch when at max weight level to simulate the character not being able to go through it (A message will pop up describing the scene if you try to go through it). A trait that can be chosen at the start of the game that increases how much weight is gained as well as increasing the amount of HP is restored from edible food. five effects that can be placed on food that facilitate the weight gain (the effects are five tiers of how much weight is gained from eating the food item). Weight loss that happens at the beginning of every day. A perk for each level of weight, all with buffs (DR) and debuffs (speed and agility). 5 stages of weight gain (6 if you count being normal weight). Here’s what I’ve got so far after about a day’s worth of work: I have almost no experience with the GECK, however I pretty much already have the base system finished. So I opened the GECK to see if I could make a simple weight gain and loss system. It only included a few outfits, but the potential to convert all vanilla clothing exists now. While it’s not like the Fallout 4 or Skyrim bodyslides that allowed for the changes happen mid game, it does still allow the creation of other body types (including fat bodies).
While I was looking for mods to install, I noticed that someone made the bodyslide and outfit studio mod work for New Vegas, allowing CBBE bodies to be used.
While I was goofing off during my break from the CK2 mod I’ve been making, I got in the mood to play New Vegas again.
I had an idea for how to get a weight gain mod to work for Fallout New Vegas.
Here’s the post with the mod’s demo: Fallout New Vegas Weight Gain Mod - #51 by failmuseum