Robots.rb

=begin

You and your friends have been battling it out with your Rock 'Em, Sock 'Em
robots, but things have gotten a little boring. You've each decided to add some
amazing new features to your robot and automate them to battle to the death.

Each robot will be represented by an object. You will be given two robot objects
and an object of battle tactics and how much damage they produce. Each robot
will have a name, hit points, speed, and then a list of battle tacitcs they are
to perform in order. Whichever robot has the best speed, will attack first with
one battle tactic.

Your job is to decide who wins.

Example:

robot1 = {
  "name" => "Rocky",
  "health" => 100,
  "speed" => 20,
  "tactics" => ["punch", "punch", "laser", "missle"]
 }
 robot2 = {
   "name" => "Missile Bob",
   "health" => 100,
   "speed" => 21,
   "tactics" => ["missle", "missle", "missle", "missle"]
 }
 tactics = {
   "punch" => 20,
   "laser" => 30,
   "missile" => 35
 }

 fight(robot1, robot2, tactics) # "Missile Bob has won the fight."
robot2 uses the first tactic, "missile" because he has the most speed. This
reduces robot1's health by 35. Now robot1 uses a punch, and so on.

Rules

A robot with the most speed attacks first. If they are tied, the first robot
passed in attacks first.
Robots alternate turns attacking. Tactics are used in order.
A fight is over when a robot has 0 or less health or both robots have run out of
tactics.
A robot who has no tactics left does no more damage, but the other robot may use
the rest of his tactics.
If both robots run out of tactics, whoever has the most health wins. Return the
message "{Name} has won the fight."
If both robots run out of tactics and are tied for health, the fight is a draw.
Return "The fight was a draw."

=end

# My Solution
def fight(robot1, robot2, tactics)
  robot1["speed"] > robot2["speed"] ? start = 1 : robot1["speed"] < robot2["speed"] ? start = 2 : start = 1
  robot1["tactics"].length > robot2["tactics"].length ? amount = robot1["tactics"].length : amount = robot2["tactics"].length
  tactic_on = 0
  ro = 1

  (1..amount*2).each do |x|
    puts "Robot #{start}'s turn"
    start == 1 ? next_tactic = robot1["tactics"][tactic_on] : next_tactic = robot2["tactics"][tactic_on]
    next_tactic != nil ? power = tactics[next_tactic] : power = 0
    start == 1 ? start = 2 : start = 1
    start == 1 ? robot1["health"] -= power : robot2["health"] -= power
    ro += 1
    (tactic_on += 1 ; ro = 1) if ro == 3
    return "#{robot2["name"]} has won the fight." if robot1["health"] < 1
    return "#{robot1["name"]} has won the fight." if robot2["health"] < 1
  end
  return "The fight was a draw." if robot1["health"] == robot2["health"]
  robot1["health"] > robot2["health"] ? "#{robot1["name"]} has won the fight." : "#{robot2["name"]} has won the fight."
end


# Better Solution
def fight(robot1, robot2, tactics)
  robots = [robot1, robot2].sort { |a, b| b["speed"] <=> a["speed"] }

  loop do
    break if robots.any? { |r| r["health"] <= 0 }
    break if robots.all? { |r| r["tactics"].empty? }

    attacker, defender = robots
    tactic = attacker["tactics"].shift
    defender["health"] -= tactics[tactic] if tactic

    robots.rotate!
  end

  return "The fight was a draw." if robot1["health"] == robot2["health"]

  winner = robots.max_by { |r| r["health"] }
  "#{winner["name"]} has won the fight."
end