How to remove, edit in-game items through mod?

Hello friends!
Sorry in advance for the weird English and newbie questions. I’ve been enjoying cataclysm before it hit 0.A and i really wanted to help the community by making some mods.

So what i’m trying to do is add some more contents for crossbow users. So i want to remove the current ‘crossbow’, ‘wood,metal,steel crossbow bolt’ and add different kinds of crossbow and bolts, with recipes to create them. But i’m not sure how i can remove in-game items through mod.

second question! since i want to delete the item ‘crossbow’ and ‘steel crossbow bolt’, the ‘crossbow trap’ has to be edited. If i edit that traps.json file in data directory, do i have to go through compiling to make my mods work? I’ve never done compiling or coding jobs in my life, so some explanation would be very nice!

Check out the mods (in mods directory). In your case you want to make a mod that has an item blacklist (like one in “no joke items”) and adds new items and new recipes.

I don’t think traps can be edited at the moment, but I may be wrong.