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Creating a Game with Rojo

Creating the Rojo Project

To use Rojo to build a game, you'll need to create a new project file, which tells Rojo how to turn your files into a Roblox place.

First, create a new folder to contain the files for your game and open up a new terminal inside of it, like cmd.exe or Bash.

It's convenient to make the folder from the command line:

mkdir my-new-project
cd my-new-project

Inside the folder, initialize a new Rojo project:

rojo init

Rojo will make a small project file in your directory, named default.project.json. It matches the "Baseplate" template from Roblox Studio, except that it'll take any files you put in a folder called src and put it into ReplicatedStorage.Source.

Speaking of files, make sure to create a directory named src in this folder, or Rojo will be upset about missing files!

mkdir src

Let's also add a Lua file, hello.lua to the src folder, so that we can make this project our own.

echo 'return "Hello, Rojo!"' > src/hello.lua

Building Your Place

Now that we have a project, one thing we can do is build a Roblox place file for our project. This is a great way to get started with a project quickly with no fuss.

All we have to do is call rojo build:

rojo build -o MyNewProject.rbxlx

If you open MyNewProject.rbxlx in Roblox Studio now, you should see a Folder named "Source" containing a ModuleScript under ReplicatedStorage.

Info

To generate a binary place file instead, use rbxl. Note that support for binary model/place files (rbxm and rbxl) is very limited in Rojo presently.

Live-Syncing into Studio

Building a place file is great for starting to work on a game, but for active iteration, you'll want something faster.

In Roblox Studio, make sure the Rojo plugin is installed. If you need it, check out the installation guide to learn how to install it.

To expose your project to the plugin, you'll need to start a new live sync session from the command line:

rojo serve

You should see output like this in your terminal:

$ rojo serve
Rojo server listening on port 34872

Switch into Roblox Studio and press the Connect button on the Rojo plugin toolbar. A dialog should appear:

Rojo plugin connection dialog

If the port number doesn't match the output from the command line, change it, and then press Connect.

If all went well, you should now be able to change files in the src directory and watch them sync into Roblox Studio in real time!

Uploading Your Place

Aimed at teams that want serious levels of automation, Rojo can upload places to Roblox.com automatically.

You'll need an existing game on Roblox.com as well as the .ROBLOSECURITY cookie of an account that has write access to that game.

Warning

It's recommended that you set up a Roblox account dedicated to deploying your game instead of your personal account in case your security cookie is compromised.

Generating and publishing your game is as simple as:

rojo upload --asset_id [PLACE ID] --cookie "[SECURITY COOKIE]"

An example project is available on GitHub that deploys to Roblox.com from GitHub and Travis-CI automatically: https://github.com/LPGhatguy/roads