This project requires you to add Starter Content after successfully cloning the project.

After adding Starter Content, you can open any map successfully which references assets from it.

(This project uses Unreal Engine version 4.15.)

This project depends on a custom version of Urho3D. Clone it from https://github.com/TheComet93/Urho3D.
You will need to checkout the iceweasel branch.

Install it to a well known place on your computer (e.g. /usr/urho3d or perhaps /home/username/urho3d or C:\urho3d if you're on Windows). You can set the install location with -DCMAKE_INSTALL_PREFIX=/path/to/installation.

You will also need to enable the iceweasel mods with -DURHO3D_ICEWEASELMODS=ON

Here are the CMake build options for the settings described above:

git checkout iceweasel
cmake -DCMAKE_INSTALL_PREFIX=/usr/urho3d \
      -DURHO3D_LIB_TYPE=SHARED \
      -DURHO3D_ICEWEASELMODS=ON \
      -DURHO3D_SAMPLES=OFF ..

Once you've installed Urho3D, go into the directory software/game. You will find a script named setup-urho3d.sh. Execute it as:

./setup-urho3d.sh /usr/urho3d

This will create some symlinks so the Ice Weasel project can find Urho3D.

Next, create a build folder, cd into it and run cmake:

mkdir build && cd build
cmake ..
make

The binary is placed in the folder ../bin.