Snake game imeplemented in Ruby (Curses, GTK3, JRuby/Swing)

How to play the game

• Use arrow keys to move the snake
• Press "r" key to restart the game

What was implemented

• Library functions that manipulate state and handle ENV variables
• 3 versions of UI: curses, gtk3, jruby/swing
  • cd curses && bundle install && ruby curses.rb
  • cd gtk && bundle install && ruby gtk.rb
  • cd jruby && ruby swing.rb
• ENV options:
  • SIZE [>1] (defaults to 5) - width and height of game board (example: SIZE=2 ruby curses.rb)
  • TIMER [0/false/off or true/on] (defaults to true) - automatically move snake by timer (example: TIMER=off ruby curses.rb)
  • TIMEOUT [>1] (defaults to 300) - time interval for times (used only if TIMER options is true) (example: TIMER=on TIMEOUT=100 ruby curses.rb)

Things that were intentially not implemented due to lack of time (but it's not hard to implement them)

• I'm not checking if snake collides with itself
• I'm not checking if snake collides with the border
• I'm not using colors
• There is no UI for game settings
• I'm not using canvas in GUI versions (I'm drawing game in TextView with pseudographics)

How to run the game without docker

• Install all required deps: gnupg2, build-essential, default-jdk
• Install RVM: https://rvm.io/ (nowadays I prefer ASDF, but it's hard to install JRuby with it, so I'm using RVM in this project)
• Install rubies: rvm install 3.2.2 && rvm install jruby-9.4.5.0
• To run curses version: cd curses && bundle install && ruby curses.rb
• To run gtk version: cd gtk && bundle install && ruby gtk.rb
• To run swing version: cd jruby && ruby swing.rb

How to run the game with docker-compose

docker-compose up

Open http://localhost:8080/, click on "vnc_auto.html@", launch the game from terminal (ruby gtk/gtk.rb)

How to run the game with docker

# do this:
make docker-build-and-run
# or this:
docker build -t ruby-snake . && docker run -it -p 8080:8080 ruby-snake

Open http://localhost:8080/, click on "vnc_auto.html@", launch the game from terminal (ruby gtk/gtk.rb)

Screenshots