Rover

Design

I chose to create a robot composed of parts and a plateau.

Plateau

Object representing the plateau that should be passed to the robot to get know about the area.

Robot

The robot itself consists of several some parts and the plateau. It can receive commands like L, R and M and tells you where it are.

Gear

These gear enables the robot to turn to left or right.

Leg

It makes the robot walk towards.

Brain

It gives intelligence to the robot so it knows if can move foward or not based on Plateau limit.

Exceptions

We have two:

UnknowDirection: tells that the given direction to turn is not valid. OutOfLimit: tells that the robot cannot move foward because there is no more plate to go inside the Plateau limit.

Controller

Just Map Controller to receive the data and process all steps the robot needs to do. This steps are just x and y positive or negative. The parameter side is just to help the front-end know which icon render. The steps result is returned via ajax for a better vizualization.

View

A side menu with robot data:

Name: Robot name Speed: Exchange rate between the current axis and the next one Interval: Interval waiting before change between axis Position x: where is the robot on X axis Position y: where is the robot on Y axis Side: Where the robot is looking Area x: The X axis length Area y: The Y axis length Commands: Commands to be executed

Commander

A class prepared to receive the input example of this test and print the given output.

TODO

• Avoid more than one robot into the same point;
• Finish some JS specs;
• Finish some Ruby specs;
• Increase the coverage;
• Kill all Mutants;
• Separate JS Rover class into more than one object;
• Setup Istanbul for coverage;
• Configure Jenkins like: -- http://wbotelhos.com/instalando-o-jenkins-no-tomcat; -- http://wbotelhos.com/acertando-o-warning-de-decode-do-jenkins; -- http://wbotelhos.com/protegendo-o-jenkins-com-senha.

What we can do?

Run Ruby specs and check coverage too:

rspec spec

Run JS specs with ESLint:

gulp

Run mutant to know what we can do better on specs:

bundle exec mutant -r ./config/environment --use rspec Brain

Run rubocop to check the code style:

rubocop

Run app and see a visual usage:

rails s

And then access http://localhost:3000

Run a console version:

ruby commander.rb

Inside the 'commander.rb' class you can choose how many robots you will deploy changing the robot_size.

Enter the input:

5 5
1 2 N
LMLMLMLMM
3 3 E
MMRMMRMRRM

And see the output:

1 3 N
5 1 E

You choose how many robots you will deploy and the commands are queued to be processed later one after another.

Deploy

I used Capistrano, you can see the tasks at config/deploy.rb

Server Stack

• Ruby 2.2.2
• Rails 4.2.3
• Nginx 1.8.0
• Unicorn 4.9.0
• Upstart

Server

Amazon EC2 on IP 54.94.222.207 or just as a facilitator http://estacione.com

Credentials

user: rover password: rover

Repository

It is keeped on Github on a private repository https://github.com/wbotelhos/rover