A simple BattleSnake AI written for NodeJS.
To get started you'll need a working NodeJS development environment, and at least read the Heroku docs on deploying a NodeJS app. This client uses Express4 for easy route management, read up on the docs to learn more about reading incoming JSON params, writing responses, etc.
Every team must show up with a laptop and create the following accounts in order to use the provided start snake. You are welcome to use existing accounts if you have them already.
- Create a free account on Github - https://www.github.com/
- Create a free account on Heroku - https://www.heroku.com/
You'll need the follwing software on your computer before you can get started with this project:
You'll need the following software on your computer if you want to compile and run the application locally. This is completely optional but probably desired since troubleshooting coding errors and testing behaviour will be much easier.
- NodeJs 6.x or 7.x
- NPM 3.x - This is installed with NodeJS
If you haven't setup a NodeJS development environment before, read how to get started with NodeJS. You'll also need npm for easy JS dependency management.
If you have the software installed already, confirm by running the respective commands on the command prompt and check the versions:
npm -v
node -v
git --version
heroku --version
DON'T SKIP THIS STEP. You'll need your own copy of this project under your own GitHub account in order to make and publish changes to your snake.
- Make sure you are signed in to your GitHub account
- Fork this project
At this point, make sure that all of you software is installed, and you've forked this project correctly. Run the following commands:
$ git clone https://github.com/<your account>/xm-battlesnake-nodejs.git
$ cd xm-battlesnake-nodejs
$ heroku local
Your app should now be running on localhost:5000/health.
You can use curl commands to easily test if you snake is working and responding to end points.
Run it locally using heroku command:
$ heroku local
$ curl localhost:5000/start -X POST -H "Content-Type: application/json" -d '{"width":20,"height":20,"game_id":"example-game-id"}'
$ curl localhost:5000/move -X POST -H "Content-Type: application/json" -d '{ "you": "2c4d4d70-8cca-48e0-ac9d-03ecafca0c98","width": 2,"turn": 0,"snakes": [{ "taunt": "git gud","name": "my-snake","id": "2c4d4d70-8cca-48e0-ac9d-03ecafca0c98","health_points": 93,"coords": [[0,0],[0,0],[0,0]] },{ "taunt": "gotta go fast","name": "other-snake","id": "c35dcf26-7f48-492c-b7b5-94ae78fbc713","health_points": 50,"coords": [[1,0],[1,0],[1,0]] }],"height": 2,"game_id": "a2facef2-b031-44ba-a36c-0859c389ef96","food": [[1,1]],"dead_snakes": [{ "taunt": "gotta go fast","name": "other-snake","id": "83fdf2b9-c8d0-44f4-acb2-0c506139079e","health_points": 50,"coords": [[5,0],[5,0],[5,0]] }] }'
Next, create an application on Heroku and give it a name that represents your project. This will create a remote git repo for Heroku to use to deploy and run your project. NOTE: APP Name must start with a letter and can only contain lowercase letters, numbers, and dashes.
$ heroku create [APP NAME]
$ git push heroku master
The output should end with the URL endpoint of your snake. Use this URL to add your snake to a game on the server.
remote: -----> Launching...
remote: Released v3
remote: https://my-snake.herokuapp.com/ deployed to Heroku
remote:
remote: Verifying deploy... done.
Your app should now be running on https://my-snake.herokuapp.com/health. You can use curl commands to easily test if you snake is working and responding to end points.
$ curl https://my-snake.herokuapp.com/start -X POST -H "Content-Type: application/json" -d '{"width":20,"height":20,"game_id":"example-game-id"}'
$ curl https://my-snake.herokuapp.com/move -X POST -H "Content-Type: application/json" -d '{ "you": "2c4d4d70-8cca-48e0-ac9d-03ecafca0c98","width": 2,"turn": 0,"snakes": [{ "taunt": "git gud","name": "my-snake","id": "2c4d4d70-8cca-48e0-ac9d-03ecafca0c98","health_points": 93,"coords": [[0,0],[0,0],[0,0]] },{ "taunt": "gotta go fast","name": "other-snake","id": "c35dcf26-7f48-492c-b7b5-94ae78fbc713","health_points": 50,"coords": [[1,0],[1,0],[1,0]] }],"height": 2,"game_id": "a2facef2-b031-44ba-a36c-0859c389ef96","food": [[1,1]],"dead_snakes": [{ "taunt": "gotta go fast","name": "other-snake","id": "83fdf2b9-c8d0-44f4-acb2-0c506139079e","health_points": 50,"coords": [[5,0],[5,0],[5,0]] }] }'
You have to commit your changes to your git project as part of pushing them to the remote heroku git.
$ git add --all; git commit -m "Updated"; git push
$ git push heroku master
Once your snake is running, you can tail the logs any time in the console using the command:
$ heroku logs --tail
For more information about using NodeJS on Heroku, see these Dev Center articles: