So you've created an awesome 3D model in an OBJ file format and now you want to turn it into a custom map for your favorite Call of Duty game. Well, you're in luck because today we're going to show you how to do just that using JSON.

Step 1: Prepare Your OBJ File

The first step is to make sure your OBJ file is ready for conversion. This means ensuring that the file is properly formatted and that all the textures and materials are in place. You'll also want to make sure that the scale and orientation of your model are correct, as this will have an impact on how it appears in the game.

Step 2: Convert OBJ to JSON

Once your OBJ file is prepared, you'll need to convert it to JSON format. There are a few different tools and software programs available that can help you with this step. Some popular options include Autodesk Maya, Blender, and 3ds Max. These programs allow you to import your OBJ file and then export it as a JSON file that is compatible with the COD map editor.

Step 3: Import JSON into COD Map Editor

With your JSON file ready to go, it's time to import it into the COD map editor. This is where the real magic happens, as you'll be able to use the editor to place your 3D model within the game world, add textures, and customize the environment to create the perfect map for your gaming experience.

Step 4: Test and Refine

Once you've imported your JSON file into the COD map editor, it's a good idea to test the map within the game to see how it looks and feels. This will give you a chance to refine the design, make any necessary adjustments, and ensure that everything is working as intended.

Step 5: Share Your Creation

Finally, once you're happy with how your custom map looks and plays, it's time to share it with the world. You can upload your map to the COD community forums, share it with your friends, or even submit it to be included in official game updates.

In conclusion, converting an OBJ file into a COD map is a multi-step process that requires careful attention to detail and a bit of technical know-how. However, with the right tools and a little bit of patience, you can bring your 3D creations to life in the world of Call of Duty.