How to connect ROS with unity?

Hello Guys

I am new to robotics and unity.I have made a virtual robot using unity that can move to certain coordinates based on user's input.I want to use this code to program a physical robot that will also do the same stuffs that my unity robot does.I wanted to ask how to use the code that I have written in unity to program my physical robot.I think it might be possible with ROS, I am not sure how do I connect ROS to unity.Any help or suggestions would be very useful.Thank you.