marka2g / treasure_hunt

Code Challenge

Treasure Hunt Game

Walk Through Video

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NOTE: The treasure coordinates that appear on the log have been removed and have only been placed there to test the UI.

Security

1. Active Record Encryption

Implemented Active Record encrypts

Encrypted values everywhere show up on server logs as [FILTERED]. If this was not the case, an attacker could parse an append-only log and cheat.

Also, the use of Dotenv allows for an .env file to provide ENV variables in the TreasureHunt::Application file. These environment variables are initialized the encrypted keys are used by ActiveRecord to safely persist values in a data store/database.

2. Class Encapsulation

In addition to the tools that ActiveRecord provides with Model encapsulation, the Move class sets a distinction between public api methods and those that are only accessible to the class. This ensures that the state of the Move and Game classes are tightly controlled by the instantiated objects.

3. Devise for Authentication

Devise is a Ruby gem that provides reasonable and safe authentication machinery.

Game Logic

The game board consists of a multi-dimensional Ruby array where a randomly generated treasure plot is set on. Once set, this plot location is encrypted and the player takes guesses for North(- negative)/South(+ positive), East(- negative)/West(+ positive) move pairs. Each unit represents 100 meters. Given more time, I would improve this interface but for a first pass, the primitive controls serve their purpose to play the game.