Lonely Island

A small capture the flag multiplayer game

Build Instructions

make

This will download the necessary dependencies from godotengine.org and build the project.

You can run the server with cd dist_root/srv/lonely-island/ && ./server and the client with cd dist_root/srv/lonely-island && ./client

To run the checker, you will need the ctf_gameserver python dependency.

Subsequently, the checker can be run with python3 checker/lonely-island-checker.py <ip> <team> <tick>

Sample Exploit

In the exploit/ directory, an example exploit is provided. It will extract the flags of new clients joining the game. This means that you need to have the exploit running while the checker is running as well.

To run the exploit you need a suitable version of Godot Engine. If you've built the project, you can use src/build/godot/Godot_v3.2.3-stable_x11.64. The exploit requires a host and port given via environment variables. An example invocation could look like this: cd exploit && HOST=localhost PORT=4321 ../src/build/godot/Godot_v3.2.3-stable_x11.64 remote.tscn

Artwork

3D Models

• "Modular terrain" by Keith at Fertile Soil Productions, retrieved from Open Game Art. License: CC0
• "3D Rigged Characters" by Kenney, retrieved from Open Game Art. License: CC0
• "Flintlock" by djonvincent, retrieved from Open Game Art. License: CC0

Textures

• "tileable grass and water" by forkart, retrieved from Open Game Art. License: CC0
• "Crosshair pack (200x)" by Kenney, retrieved from Open Game Art. License: CC0
• "Map Pergaments" by Nia Mi, retrieved from Open Game Art. License: CC0

Fonts

• "Nugie Romantic" by cove703, retrieved from Fontspace. License: Freeware
• "Playfair Display Font" by Claus Eggers Sørensen, retrieved from Fontspace. License: SIL Open Font License