instructions for ROS installation:

MacOS (M1): https://medium.com/robostack/cross-platform-conda-packages-for-ros-fa1974fd1de3 https://www.youtube.com/watch?app=desktop&v=zF7Pbq4Puvg

Windows: https://wiki.ros.org/noetic/Installation/Windows

Ubuntu (ideally use Ubuntu): https://wiki.ros.org/noetic/Installation/Ubuntu

to setup your workspace, run these commands in your terminal:

mkdir -p ~/catkin_ws/src  
cd ~/catkin_ws/src
catkin_create_pkg igvc
cd ~/catkin_ws
catkin build

this creates a folder named catkin_ws, and creates a package named igvc

now copy the config, launch, rviz, scripts, and urdf folders from the github into igvc folder (will be in catkin_ws/src/igvc/)

go inside your catkin_ws/src/igvc/CMakeLists.txt, and look for catkin_install_python(PROGRAMS this line should be commented out

replace it with

catkin_install_python(PROGRAMS
  scripts/lane_detection2
  scripts/lane_detection
  scripts/object_detection
  DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION}
)

now run

cd ~/catkin_ws
catkin build

your environment should now be all setup

to run a gazebo simulation, run these commands:

cd ~/catkin_ws
source devel/setup.bash OR source devel/setup.zsh  (depending on if you are using bash or zsh terminal)
roslaunch igvc diffdrive.launch