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December 2015

Integrating Counter-Strike: Global Offensive with Philips Hue

csgo-c4-hue

Recently, Valve had released their Counter-Strike: Global Offensive game state integration for developers to use. This allows the game client to send all game data, such as the player’s health, guns, ammo, frags, etc. to a HTTP POST endpoint server.

After seeing the PGL Arena Effects in the DreamHack Cluj-Napoca CS:GO tournament a couple of months ago, I decided to make full use of my Philips Hue lights in my room by recreating the C4 bomb lighting effects.

Coding

Since I’ve been coding in Python a lot recently, I stuck with this language for this project. First, I had to create the HTTP server to receive the POST game state data, so I used the Flask microframework. I launched the Flask server and joined a game in CS:GO, and immediately I was seeing tons of JSON being received in the terminal window. All I really needed was the C4 bomb information, which I was able to find in data['round']['bomb']. By checking that key, I noticed there were 3 values if the key existed: planted, exploded, and defused. If the bomb isn’t planted, there won’t be a bomb key in the round object at all. So after getting the bomb status, I made the server write the result to a file conveniently named bomb_status.

Now I had to do the fun part — making my Philips Hue lights turn on and change colors. I went step by step with the Philips Hue API Getting Started guide, and it was very easy to follow and understand the RESTful interface. Once I understood how to control the Hue lights, I wrote a 2nd Python script for reading the bomb_status file. In this 2nd script, I have a while loop that runs indefinitely, with a 250ms wait time in between each loop. In each loop iteration, it gets the bomb status and goes through a series of if-statements to determine what to do. Here’s the run down of it:

  • if bomb is planted: make each light blink red 1-by-1.
  • if bomb is planted and plant time has been >= 30 seconds: make all lights blink red every second.
  • if bomb is exploded: make all lights turn orange.
  • if bomb is defused: make all lights turn blue.
  • if bomb has no status: make all lights turn white.

And that’s basically it.

Final Result

My Python code is now on GitHub:
https://github.com/doobix/csgo-c4-hue

I have created a Node.js version of the same code, also on GitHub:
https://github.com/doobix/csgo-c4-hue-node

A video of the script in action is uploaded to YouTube:
https://www.youtube.com/watch?v=QBdI54MHB-k

Reddit thread:
https://redd.it/3wjpgg

csgo-c4-hue