initial commit of ex 42_1 42_2 42_3

ex42_1.rb

@@ -0,0 +1,197 @@
+#!/usr/bin/env ruby
+
+class Game
+
+  def initialize(start)
+    @quips = [
+      "you died. You kinda suck at this.",
+      "Nice job, you died... jackass.",
+      "Such a luser.",
+      "I have a small puppy that's better at this."
+    ]
+    @start = start
+    puts "in init @start = " + @start.inspect
+  end
+
+  def prompt()
+    print "> "
+  end
+
+  def play()
+    puts "@start => " + @start.inspect
+    next_room = @start
+
+    while true
+      puts "\n----------"
+      room = method(next_room)
+      puts "room.inspect: #{room.inspect}"
+      puts "room.class: #{room.class}"
+      next_room = room.call()
+    end
+  end
+
+  def death()
+    puts @quips[rand(@quips.length())]
+    Process.exit(1)
+  end
+
+  def central_corridor()
+    puts "The Gothons of Planet Percal #25 have invaded your ship and destroyed"
+    puts "your entire crew.  You are the last surviving member and your last"
+    puts "mission is to get the neutron destruct bomb from the Weapons Armory,"
+    puts "put it in the bridge, and blow the ship up after getting into an "
+    puts "escape pod."
+    puts "\n"
+    puts "You're running down the central corridor to the Weapons Armory when"
+    puts "a Gothon jumps out, red scaly skin, dark grimy teeth, and evil clown costume"
+    puts "flowing around his hate filled body.  He's blocking the door to the"
+    puts "Armory and about to pull a weapon to blast you."
+    puts "Hint: tell a joke"
+
+    prompt()
+    action = gets.chomp()
+
+    if action == "shoot!"
+      puts "Quick on the draw you yank out your blaster and fire it at the Gothon."
+      puts "His clown costume is flowing and moving around his body, which throws"
+      puts "off your aim.  Your laser hits his costume but misses him entirely.  This"
+      puts "completely ruins his brand new costume his mother bought him, which"
+      puts "makes him fly into an insane rage and blast you repeatedly in the face until"
+      puts "you are dead.  Then he eats you."
+      return :death
+
+    elsif action == "dodge!"
+      puts "Like a world class boxer you dodge, weave, slip and slide right"
+      puts "as the Gothon's blaster cranks a laser past your head."
+      puts "In the middle of your artful dodge your foot slips and you"
+      puts "bang your head on the metal wall and pass out."
+      puts "You wake up shortly after only to die as the Gothon stomps on"
+      puts "your head and eats you."
+      return :death
+
+    elsif action == "tell a joke"
+      puts "Lucky for you they made you learn Gothon insults in the academy."
+      puts "You tell the one Gothon joke you know:"
+      puts "Lbhe zbgure vf fb sng, jura fur fvgf nebhaq gur ubhfr, fur fvgf nebhaq gur ubhfr."
+      puts "The Gothon stops, tries not to laugh, then busts out laughing and can't move."
+      puts "While he's laughing you run up and shoot him square in the head"
+      puts "putting him down, then jump through the Weapon Armory door."
+      return :laser_weapon_armory
+
+    else
+      puts "DOES NOT COMPUTE!"
+      return :central_corridor
+    end
+  end
+
+  def laser_weapon_armory()
+    puts "You do a dive roll into the Weapon Armory, crouch and scan the room"
+    puts "for more Gothons that might be hiding.  It's dead quiet, too quiet."
+    puts "You stand up and run to the far side of the room and find the"
+    puts "neutron bomb in its container.  There's a keypad lock on the box"
+    puts "and you need the code to get the bomb out.  If you get the code"
+    puts "wrong 10 times then the lock closes forever and you can't"
+    puts "get the bomb.  The code is 3 digits."
+    cheat = '333'
+    code = "%s%s%s" % [rand(9)+1, rand(9)+1, rand(9)+1]
+    print "[keypad]> "
+    guess = gets.chomp()
+    guesses = 0
+
+	  while guess != code and guess != cheat and guesses < 4
+	    puts "BZZZZZEDD!"
+	    guesses += 1
+	    print "[keypad]> "
+	    guess = gets.chomp()
+	  end
+
+    if guess == code or guess = cheat
+      puts "The container clicks open and the seal breaks, letting gas out."
+      puts "You grab the neutron bomb and run as fast as you can to the"
+      puts "bridge where you must place it in the right spot."
+      return :the_bridge
+    else
+      puts "The lock buzzes one last time and then you hear a sickening"
+      puts "melting sound as the mechanism is fused together."
+      puts "You decide to sit there, and finally the Gothons blow up the"
+      puts "ship from their ship and you die."
+      return :death
+    end
+  end
+
+  def the_bridge()
+    puts "You burst onto the Bridge with the netron destruct bomb"
+    puts "under your arm and surprise 5 Gothons who are trying to"
+    puts "take control of the ship.  Each of them has an even uglier"
+    puts "clown costume than the last.  They haven't pulled their"
+    puts "weapons out yet, as they see the active bomb under your"
+    puts "arm and don't want to set it off."
+    puts "Hint: slowly place the bomb"
+
+    prompt()
+    action = gets.chomp()
+
+    if action == "throw the bomb"
+      puts "In a panic you throw the bomb at the group of Gothons"
+      puts "and make a leap for the door.  Right as you drop it a"
+      puts "Gothon shoots you right in the back killing you."
+      puts "As you die you see another Gothon frantically try to disarm"
+      puts "the bomb. You die knowing they will probably blow up when"
+      puts "it goes off."
+      return :death
+
+    elsif action == "slowly place the bomb"
+      puts "You point your blaster at the bomb under your arm"
+      puts "and the Gothons put their hands up and start to sweat."
+      puts "You inch backward to the door, open it, and then carefully"
+      puts "place the bomb on the floor, pointing your blaster at it."
+      puts "You then jump back through the door, punch the close button"
+      puts "and blast the lock so the Gothons can't get out."
+      puts "Now that the bomb is placed you run to the escape pod to"
+      puts "get off this tin can."
+      return :escape_pod
+    else
+      puts "DOES NOT COMPUTE!"
+      return :the_bridge
+    end
+  end
+
+  def escape_pod()
+    puts "You rush through the ship desperately trying to make it to"
+    puts "the escape pod before the whole ship explodes.  It seems like"
+    puts "hardly any Gothons are on the ship, so your run is clear of"
+    puts "interference.  You get to the chamber with the escape pods, and"
+    puts "now need to pick one to take.  Some of them could be damaged"
+    puts "but you don't have time to look.  There's 5 pods, which one"
+    puts "do you take?"
+
+    cheat = 3
+    puts "cheat: #{cheat}"
+    puts "cheat.class: #{cheat.class}"
+    good_pod = rand(5)+1
+    print "[pod #]>"
+    guess = gets.chomp()
+    puts "guess.to_i: #{guess.to_i}"
+
+    if guess.to_i == good_pod or guess.to_i == cheat
+      puts "You jump into pod %s and hit the eject button." % guess
+      puts "The pod easily slides out into space heading to"
+      puts "the planet below.  As it flies to the planet, you look"
+      puts "back and see your ship implode then explode like a"
+      puts "bright star, taking out the Gothon ship at the same"
+      puts "time.  You won!"
+      Process.exit(0)
+    else
+      puts "You jump into pod %s and hit the eject button." % guess
+      puts "The pod escapes out into the void of space, then"
+      puts "implodes as the hull ruptures, crushing your body"
+      puts "into jam jelly."
+      return :death
+    end
+  end
+end
+
+a_game = Game.new(:central_corridor)
+
+a_game.play()
+

ex42_1_1.rb

@@ -0,0 +1,68 @@
+#!/usr/bin/env ruby
+
+class Game
+
+  # Whenever Ruby creates a new object, it looks for a method named initialize and executes it. 
+  # Arguments supplied to .new() are delivered to initialize()
+  # In this script the argument :smurf is supplied to initialize(start)
+  # a_game = Game.new(:smurf)
+  def initialize(start)
+    @start = start
+    puts "in init @start = " + @start.inspect
+    # Here we are calling the method inspect on @start which is a symbol
+    # @start has been assigned the symbol :smurf
+    # @start.inspect returns :smurf
+    # The method inspect returns a string containing a human-readable representaiton of the object it is being called upon
+  end
+
+  def play()
+    puts "@start => " + @start.inspect
+    # Assign whatever @start is to next_room
+    next_room = @start
+
+    # Keep doing the stuff inside the while true block until you encounter a Process.exit()
+    while true
+      puts "\n----------"
+      # The first time through this wile loop this essentially room = method(:smurf)
+      # The Method method() creates a method object of the method :smurf
+      # We assign the result of method(:smurf), which is to say a method object of :central_corridor, to room
+      puts "method(next_room): #{method(next_room)}"
+      room = method(next_room)
+      puts "room: #{room}"
+      puts "room.inspect: #{room.inspect}"
+      puts "room.class: #{room.class}"
+      # The Method call() invokes the method along with any formal parameters passed in
+      # Here the method call() is invoking the method room, which is a method object of :smurf
+      # This is the same as doing: method(:smurf).call
+      # We call the method object, which invokes or runs the method object, and assign its return value which in this case is :death to next_room
+      puts "room.call(): #{room.call()}"
+      # next_room = method(:smurf).call
+      next_room = room.call()
+      puts "next_room: #{next_room}"
+      puts "next_room.inspect: #{next_room.inspect}"
+      puts "next_room.class: #{next_room.class}"
+#      puts method(:smurf).call.inspect
+#      puts method(:smurf).call.class
+    end
+  end
+
+  def death()
+    puts "YOU DIE!!"
+    Process.exit(1)
+  end
+
+  def smurf()
+    puts "SMURF!!!"
+    return :death
+  end
+
+end
+
+# Create a new instance of the Class "Game"
+# Supply the initialize method with the argument :smurf
+# Assign this to the object a_game
+a_game = Game.new(:smurf)
+
+# Call the method play on the object a_game
+a_game.play()
+