Port Bombardment to Ruby

11 Bombardment/ruby/bombardment.rb

@@ -0,0 +1,167 @@
+require "set"
+
+class Battlefield
+  TOTAL_OUTPOSTS = 25
+  TOTAL_PLATOONS = 4
+
+  class << self
+    def with_random_platoon_placements
+      new((1..TOTAL_OUTPOSTS).to_a.sample(4))
+    end
+
+    def valid_platoon_placement?(i)
+      i.between?(1, TOTAL_OUTPOSTS)
+    end
+  end
+
+  def initialize(platoon_placements)
+    @platoon_placements = Set.new(platoon_placements)
+  end
+
+  # Fires a missile at the specified outpost. Returns true if it hits a
+  # platoon, false otherwise.
+  def fire_missile_at(outpost)
+    !@platoon_placements.delete?(outpost).nil?
+  end
+
+  def remaining_platoons_count
+    @platoon_placements.size
+  end
+end
+
+class Game
+  def initialize(player_battlefield:, computer_battlefield:)
+    @player_battlefield = player_battlefield
+    @computer_battlefield = computer_battlefield
+  end
+
+  def play
+    player_choice = get_integer_answer_to("WHERE DO YOU WISH TO FIRE")
+
+    if @computer_battlefield.fire_missile_at(player_choice)
+      print_player_success_message
+      return if @computer_battlefield.remaining_platoons_count == 0
+    else
+      puts "HA, HA YOU MISSED. MY TURN NOW:"
+    end
+    puts
+
+    computer_choice = rand(1..Battlefield::TOTAL_OUTPOSTS)
+
+    if @player_battlefield.fire_missile_at(computer_choice)
+      print_computer_success_message(computer_choice)
+    else
+      puts "I MISSED YOU, YOU DIRTY RAT. I PICKED #{computer_choice}. YOUR TURN:"
+    end
+    puts
+  end
+
+  def finished?
+    @player_battlefield.remaining_platoons_count == 0 ||
+      @computer_battlefield.remaining_platoons_count == 0
+  end
+
+  private
+
+  def get_integer_answer_to(question)
+    puts question
+    $stdin.gets.strip.to_i
+  end
+
+  def print_computer_success_message(computer_choice)
+    if @player_battlefield.remaining_platoons_count == 0
+      puts "YOU'RE DEAD. YOUR LAST OUTPOST WAS AT #{computer_choice}. HA, HA, HA."
+      puts "BETTER LUCK NEXT TIME."
+      return
+    end
+
+    puts "I GOT YOU. IT WON'T BE LONG NOW. POST #{computer_choice} WAS HIT."
+
+    case @player_battlefield.remaining_platoons_count
+    when 1
+      puts "YOU HAVE ONLY ONE OUTPOST LEFT"
+    when 2
+      puts "YOU HAVE ONLY TWO OUTPOSTS LEFT"
+    when 3
+      puts "YOU HAVE ONLY THREE OUTPOSTS LEFT"
+    end
+  end
+
+  def print_player_success_message
+    if @computer_battlefield.remaining_platoons_count == 0
+      puts "YOU GOT ME, I'M GOING FAST. BUT I'LL GET YOU WHEN"
+      puts "MY TRANSISTO&S RECUP%RA*E!"
+      return
+    end
+
+    puts "YOU GOT ONE OF MY OUTPOSTS!"
+
+    case @computer_battlefield.remaining_platoons_count
+    when 1
+      puts "THREE DOWN, ONE TO GO."
+    when 2
+      puts "TWO DOWN, TWO TO GO."
+    when 3
+      puts "ONE DOWN, THREE TO GO."
+    end
+  end
+end
+
+INTRODUCTION = <<~TEXT
+                                   BOMBARDMENT
+                 CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY
+
+
+
+  YOU ARE ON A BATTLEFIELD WITH 4 PLATOONS AND YOU
+  HAVE 25 OUTPOSTS AVAILABLE WHERE THEY MAY BE PLACED.
+  YOU CAN ONLY PLACE ONE PLATOON AT ANY ONE OUTPOST.
+  THE COMPUTER DOES THE SAME WITH ITS FOUR PLATOONS.
+
+  THE OBJECT OF THE GAME IS TO FIRE MISSLES AT THE
+  OUTPOSTS OF THE COMPUTER.  IT WILL DO THE SAME TO YOU.
+  THE ONE WHO DESTROYS ALL FOUR OF THE ENEMY'S PLATOONS
+  FIRST IS THE WINNER.
+
+  GOOD LUCK... AND TELL US WHERE YOU WANT THE BODIES SENT!
+
+  TEAR OFF MATRIX AND USE IT TO CHECK OFF THE NUMBERS.
+TEXT
+
+def print_matrix
+  (1..25).each do |i|
+    print i
+    print i % 5 == 0 ? "\n" : "\t"
+  end
+end
+
+def ask_for_platoon_placements
+  puts "WAHT ARE YOUR FOUR POSITIONS?"
+  platoon_placements = $stdin.gets.strip.split(",").map(&:to_i)
+
+  if platoon_placements.size == 4 &&
+      platoon_placements.all? { |i| Battlefield.valid_platoon_placement?(i) }
+    platoon_placements
+  else
+    puts "POSITIONS SHOULD BE BETWEEN 1 TO 25, DELIMITED BY COMMA."
+    ask_for_platoon_placements
+  end
+end
+
+def start_game
+  puts INTRODUCTION
+  puts
+  print_matrix
+  puts
+  platoon_placements = ask_for_platoon_placements
+  puts
+
+  game = Game.new(
+    player_battlefield: Battlefield.new(platoon_placements),
+    computer_battlefield: Battlefield.with_random_platoon_placements
+  )
+
+  game.play until game.finished?
+end
+
+start_game