Brief

Write a robot simulator.

A robot factory's test facility needs a program to verify robot movements.

The robots have three possible movements:

  • turn right
  • turn left
  • advance

Robots are placed on a hypothetical infinite grid, facing a particular direction (north, east, south, or west) at a set of {x,y} coordinates, e.g., {3,8}, with coordinates increasing to the north and east.

The robot then receives a number of instructions, at which point the testing facility verifies the robot's new position, and in which direction it is pointing.

  • The letter-string "RAALAL" means:
    • Turn right
    • Advance twice
    • Turn left
    • Advance once
    • Turn left yet again
  • Say a robot starts at {7, 3} facing north. Then running this stream of instructions should leave it at {9, 4} facing west.

Setup

Install assignment dependencies: p

$ npm install

Making the test suite pass

Execute the tests with:

$ npm test

Evaluation Criteria

  • JavaScript best practices
  • Show us your work through your commit history
  • Completeness: did you complete the features? Are all the tests running?
  • Correctness: does the functionality act in sensible, thought-out ways?
  • Maintainability: is it written in a clean, maintainable way?