Browser-based remake of the classic arcade game

• Use arrow keys to move in corresponding directions
• Press "spacebar" to fire
• Press "s" to activate shield (lasts several seconds)

• Keeps track of score, lives remaining, shields remaining
• (future) Keep track of high-score, increase difficulty, add sound effects

• Written in JavaScript using HTML5 Canvas API
• Implements inherits function (in util.js class) for inheritance design pattern
• Ship class uses JavaScript 'Math' Object to calculate ship and bullet movement
• Game class determines collisions and removes appropriate objects