From 880fac2e3f13eed89471514ad05145a909981c9b Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 08:45:52 -0600
Subject: [PATCH 01/12] Start hurkle.rb with the original BASIC code

---
 51 Hurkle/ruby/hurkle.rb | 51 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 51 Hurkle/ruby/hurkle.rb

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
new file mode 100644
index 00000000..c758091c
--- /dev/null
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -0,0 +1,51 @@
+10 PRINT TAB(33);"HURKLE"
+20 PRINT TAB(15);"CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
+30 PRINT:PRINT:PRINT
+110 N=5
+120 G=10
+210 PRINT
+220 PRINT "A HURKLE IS HIDING ON A";G;"BY";G;"GRID. HOMEBASE"
+230 PRINT "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
+235 PRINT "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
+240 PRINT "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
+245 PRINT "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
+246 PRINT "IS THE VERTICAL POSITION. YOU MUST TRY TO"
+250 PRINT "GUESS THE HURKLE'S GRIDPOINT. YOU GET";N;"TRIES."
+260 PRINT "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
+270 PRINT "DIRECTION TO GO TO LOOK FOR THE HURKLE."
+280 PRINT
+285 A=INT(G*RND(1))
+286 B=INT(G*RND(1))
+310 FOR K=1 TO N
+320 PRINT "GUESS #";K;
+330 INPUT X,Y
+340 IF ABS(X-A)+ABS(Y-B)=0 THEN 500
+350 REM PRINT INFO
+360 GOSUB 610
+370 PRINT
+380 NEXT K
+410 PRINT
+420 PRINT "SORRY, THAT'S";N;"GUESSES."
+430 PRINT "THE HURKLE IS AT ";A;",";B
+440 PRINT
+450 PRINT "LET'S PLAY AGAIN, HURKLE IS HIDING."
+460 PRINT
+470 GOTO 285
+500 REM
+510 PRINT
+520 PRINT "YOU FOUND HIM IN";K;"GUESSES!"
+540 GOTO 440
+610 PRINT "GO ";
+620 IF Y=B THEN 670
+630 IF Y<B THEN 660
+640 PRINT "SOUTH";
+650 GOTO 670
+660 PRINT "NORTH";
+670 IF X=A THEN 720
+680 IF X<A THEN 710
+690 PRINT "WEST";
+700 GOTO 720
+710 PRINT "EAST";
+720 PRINT
+730 RETURN
+999 END

From b4254488bd4ccd1bac6951b4c1b85a0d44689c08 Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 08:54:05 -0600
Subject: [PATCH 02/12] Line-by-line-as-literally-as-possible conversion from
 BASIC to Ruby

Excluding the direction-finding logic.

Ruby lacks a GOTO or even a way to "break" out of two loops instead of
one, necessitating the use of variables and subroutines that the
original program lacked.
---
 51 Hurkle/ruby/hurkle.rb | 117 ++++++++++++++++++++++-----------------
 1 file changed, 66 insertions(+), 51 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index c758091c..8d1840c3 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -1,51 +1,66 @@
-10 PRINT TAB(33);"HURKLE"
-20 PRINT TAB(15);"CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
-30 PRINT:PRINT:PRINT
-110 N=5
-120 G=10
-210 PRINT
-220 PRINT "A HURKLE IS HIDING ON A";G;"BY";G;"GRID. HOMEBASE"
-230 PRINT "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
-235 PRINT "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
-240 PRINT "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
-245 PRINT "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
-246 PRINT "IS THE VERTICAL POSITION. YOU MUST TRY TO"
-250 PRINT "GUESS THE HURKLE'S GRIDPOINT. YOU GET";N;"TRIES."
-260 PRINT "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
-270 PRINT "DIRECTION TO GO TO LOOK FOR THE HURKLE."
-280 PRINT
-285 A=INT(G*RND(1))
-286 B=INT(G*RND(1))
-310 FOR K=1 TO N
-320 PRINT "GUESS #";K;
-330 INPUT X,Y
-340 IF ABS(X-A)+ABS(Y-B)=0 THEN 500
-350 REM PRINT INFO
-360 GOSUB 610
-370 PRINT
-380 NEXT K
-410 PRINT
-420 PRINT "SORRY, THAT'S";N;"GUESSES."
-430 PRINT "THE HURKLE IS AT ";A;",";B
-440 PRINT
-450 PRINT "LET'S PLAY AGAIN, HURKLE IS HIDING."
-460 PRINT
-470 GOTO 285
-500 REM
-510 PRINT
-520 PRINT "YOU FOUND HIM IN";K;"GUESSES!"
-540 GOTO 440
-610 PRINT "GO ";
-620 IF Y=B THEN 670
-630 IF Y<B THEN 660
-640 PRINT "SOUTH";
-650 GOTO 670
-660 PRINT "NORTH";
-670 IF X=A THEN 720
-680 IF X<A THEN 710
-690 PRINT "WEST";
-700 GOTO 720
-710 PRINT "EAST";
-720 PRINT
-730 RETURN
-999 END
+puts " " * 33 + "HURKLE"
+puts " " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
+3.times { puts }
+$n = 5
+$g = 10
+puts
+puts "A HURKLE IS HIDING ON A " + $g.to_s + " BY " + $g.to_s + " GRID. HOMEBASE"
+puts "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
+puts "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
+puts "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
+puts "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
+puts "IS THE VERTICAL POSITION. YOU MUST TRY TO"
+puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET " + $n.to_s + " TRIES."
+puts "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
+puts "DIRECTION TO GO TO LOOK FOR THE HURKLE."
+puts
+
+def main
+  loop do
+    $a = rand($g).floor
+    $b = rand($g).floor
+    found = false
+    (1..$n).each do |k|
+      print "GUESS # " + k.to_s + " "
+      print "? "
+      x, y = gets.chomp.split(",").map(&:to_i)
+      if (x-$a).abs + (y-$b).abs == 0
+        you_found_him(k)
+        found = true
+        break
+      end
+      say_where_to_go(x, y)
+      puts
+    end
+    if not found
+      puts
+      puts "SORRY, THAT'S " + $n.to_s + " GUESSES."
+      puts "THE HURKLE IS AT " + $a.to_s + "," + $b.to_s
+    end
+    puts
+    puts "LET'S PLAY AGAIN, HURKLE IS HIDING."
+    puts
+  end
+end
+
+def you_found_him(k)
+  puts
+  puts "YOU FOUND HIM IN " + k.to_s + " GUESSES!"
+end
+
+def say_where_to_go(x, y)
+  print "GO "
+  #620 IF Y=B THEN 670
+  #630 IF Y<B THEN 660
+  print "SOUTH"
+  #650 GOTO 670
+  print "NORTH"
+  #670 IF X=A THEN 720
+  #680 IF X<A THEN 710
+  print "WEST"
+  #700 GOTO 720
+  print "EAST"
+  puts
+end
+
+main

From c17ea838d380907fe3af05833fb91930d45c3061 Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 10:06:08 -0600
Subject: [PATCH 03/12] Add in the direction-finding logic

---
 51 Hurkle/ruby/hurkle.rb | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index 8d1840c3..e3ddd9d0 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -50,16 +50,20 @@ end
 
 def say_where_to_go(x, y)
   print "GO "
-  #620 IF Y=B THEN 670
-  #630 IF Y<B THEN 660
-  print "SOUTH"
-  #650 GOTO 670
-  print "NORTH"
-  #670 IF X=A THEN 720
-  #680 IF X<A THEN 710
-  print "WEST"
-  #700 GOTO 720
-  print "EAST"
+  if not y == $b
+    if not y < $b
+      print "SOUTH"
+    else
+      print "NORTH"
+    end
+  end
+  if not x == $a
+    if not x < $a
+      print "WEST"
+    else
+      print "EAST"
+    end
+  end
   puts
 end
 

From 5826a0ce8298889bcf45bf5466c9c7768e1b28be Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 10:08:27 -0600
Subject: [PATCH 04/12] Tighten up direction-finding logic

---
 51 Hurkle/ruby/hurkle.rb | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index e3ddd9d0..b4929906 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -50,20 +50,8 @@ end
 
 def say_where_to_go(x, y)
   print "GO "
-  if not y == $b
-    if not y < $b
-      print "SOUTH"
-    else
-      print "NORTH"
-    end
-  end
-  if not x == $a
-    if not x < $a
-      print "WEST"
-    else
-      print "EAST"
-    end
-  end
+  print y < $b ? "NORTH" : "SOUTH" unless y == $b
+  print x < $a ? "EAST"  : "WEST" unless x == $a
   puts
 end
 

From cc24398bdbad731e4e72a56260df7b43918aa26a Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 10:09:39 -0600
Subject: [PATCH 05/12] Correct hurkle's gender

Hurkles can give birth parthenogenetically, but are nevertheless -- or
at least this one is -- nongendered. No male hurkles are known to exist
---
 51 Hurkle/ruby/hurkle.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index b4929906..e6a7c1c0 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -45,7 +45,7 @@ end
 
 def you_found_him(k)
   puts
-  puts "YOU FOUND HIM IN " + k.to_s + " GUESSES!"
+  puts "YOU FOUND IT IN " + k.to_s + " GUESSES!"
 end
 
 def say_where_to_go(x, y)

From b7e044c9c27219fc2d00b5f6c47687a381bfcf36 Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 10:15:12 -0600
Subject: [PATCH 06/12] print_introduction

---
 51 Hurkle/ruby/hurkle.rb | 36 ++++++++++++++++++++----------------
 1 file changed, 20 insertions(+), 16 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index e6a7c1c0..ee9634fb 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -1,21 +1,25 @@
-puts " " * 33 + "HURKLE"
-puts " " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
-3.times { puts }
-$n = 5
-$g = 10
-puts
-puts "A HURKLE IS HIDING ON A " + $g.to_s + " BY " + $g.to_s + " GRID. HOMEBASE"
-puts "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
-puts "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
-puts "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
-puts "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
-puts "IS THE VERTICAL POSITION. YOU MUST TRY TO"
-puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET " + $n.to_s + " TRIES."
-puts "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
-puts "DIRECTION TO GO TO LOOK FOR THE HURKLE."
-puts
+def print_introduction
+  puts " " * 33 + "HURKLE"
+  puts " " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
+  3.times { puts }
+  $n = 5
+  $g = 10
+  puts
+  puts "A HURKLE IS HIDING ON A " + $g.to_s + " BY " + $g.to_s + " GRID. HOMEBASE"
+  puts "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
+  puts "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
+  puts "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
+  puts "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
+  puts "IS THE VERTICAL POSITION. YOU MUST TRY TO"
+  puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET " + $n.to_s + " TRIES."
+  puts "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
+  puts "DIRECTION TO GO TO LOOK FOR THE HURKLE."
+  puts
+end
 
 def main
+  print_introduction
+
   loop do
     $a = rand($g).floor
     $b = rand($g).floor

From f9387636a7a19c4b74115f90d48b20ae6dfb091c Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 10:17:47 -0600
Subject: [PATCH 07/12] Move more prints into functions

---
 51 Hurkle/ruby/hurkle.rb | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index ee9634fb..779c9f85 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -1,4 +1,4 @@
-def print_introduction
+def say_introduction
   puts " " * 33 + "HURKLE"
   puts " " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
   3.times { puts }
@@ -18,7 +18,7 @@ def print_introduction
 end
 
 def main
-  print_introduction
+  say_introduction
 
   loop do
     $a = rand($g).floor
@@ -29,25 +29,19 @@ def main
       print "? "
       x, y = gets.chomp.split(",").map(&:to_i)
       if (x-$a).abs + (y-$b).abs == 0
-        you_found_him(k)
+        say_success(k)
         found = true
         break
       end
       say_where_to_go(x, y)
       puts
     end
-    if not found
-      puts
-      puts "SORRY, THAT'S " + $n.to_s + " GUESSES."
-      puts "THE HURKLE IS AT " + $a.to_s + "," + $b.to_s
-    end
-    puts
-    puts "LET'S PLAY AGAIN, HURKLE IS HIDING."
-    puts
+    say_failure if not found
+    say_play_again
   end
 end
 
-def you_found_him(k)
+def say_success(k)
   puts
   puts "YOU FOUND IT IN " + k.to_s + " GUESSES!"
 end
@@ -59,4 +53,16 @@ def say_where_to_go(x, y)
   puts
 end
 
+def say_failure
+  puts
+  puts "SORRY, THAT'S " + $n.to_s + " GUESSES."
+  puts "THE HURKLE IS AT " + $a.to_s + "," + $b.to_s
+end
+
+def say_play_again
+  puts
+  puts "LET'S PLAY AGAIN, HURKLE IS HIDING."
+  puts
+end
+
 main

From 9d41dd2c313525b0f3b550f0ee8e9cd562d131f3 Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 10:18:12 -0600
Subject: [PATCH 08/12] Move a function around

---
 51 Hurkle/ruby/hurkle.rb | 38 +++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index 779c9f85..790f579d 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -1,22 +1,3 @@
-def say_introduction
-  puts " " * 33 + "HURKLE"
-  puts " " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
-  3.times { puts }
-  $n = 5
-  $g = 10
-  puts
-  puts "A HURKLE IS HIDING ON A " + $g.to_s + " BY " + $g.to_s + " GRID. HOMEBASE"
-  puts "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
-  puts "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
-  puts "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
-  puts "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
-  puts "IS THE VERTICAL POSITION. YOU MUST TRY TO"
-  puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET " + $n.to_s + " TRIES."
-  puts "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
-  puts "DIRECTION TO GO TO LOOK FOR THE HURKLE."
-  puts
-end
-
 def main
   say_introduction
 
@@ -41,6 +22,25 @@ def main
   end
 end
 
+def say_introduction
+  puts " " * 33 + "HURKLE"
+  puts " " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
+  3.times { puts }
+  $n = 5
+  $g = 10
+  puts
+  puts "A HURKLE IS HIDING ON A " + $g.to_s + " BY " + $g.to_s + " GRID. HOMEBASE"
+  puts "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
+  puts "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
+  puts "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
+  puts "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
+  puts "IS THE VERTICAL POSITION. YOU MUST TRY TO"
+  puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET " + $n.to_s + " TRIES."
+  puts "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
+  puts "DIRECTION TO GO TO LOOK FOR THE HURKLE."
+  puts
+end
+
 def say_success(k)
   puts
   puts "YOU FOUND IT IN " + k.to_s + " GUESSES!"

From 7ab5cfd140e57d227b795e7b988c5ab9be0fe0d6 Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 10:20:40 -0600
Subject: [PATCH 09/12] Ruby names constants with UPPER_CASE by convention

---
 51 Hurkle/ruby/hurkle.rb | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index 790f579d..24eabf40 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -1,11 +1,14 @@
+MAX_GUESSES = 5
+GRID_SIZE = 10
+
 def main
   say_introduction
 
   loop do
-    $a = rand($g).floor
-    $b = rand($g).floor
+    $a = rand(GRID_SIZE).floor
+    $b = rand(GRID_SIZE).floor
     found = false
-    (1..$n).each do |k|
+    (1..MAX_GUESSES).each do |k|
       print "GUESS # " + k.to_s + " "
       print "? "
       x, y = gets.chomp.split(",").map(&:to_i)
@@ -26,16 +29,14 @@ def say_introduction
   puts " " * 33 + "HURKLE"
   puts " " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
   3.times { puts }
-  $n = 5
-  $g = 10
   puts
-  puts "A HURKLE IS HIDING ON A " + $g.to_s + " BY " + $g.to_s + " GRID. HOMEBASE"
+  puts "A HURKLE IS HIDING ON A " + GRID_SIZE.to_s + " BY " + GRID_SIZE.to_s + " GRID. HOMEBASE"
   puts "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
   puts "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
   puts "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
   puts "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
   puts "IS THE VERTICAL POSITION. YOU MUST TRY TO"
-  puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET " + $n.to_s + " TRIES."
+  puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET " + MAX_GUESSES.to_s + " TRIES."
   puts "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
   puts "DIRECTION TO GO TO LOOK FOR THE HURKLE."
   puts
@@ -55,7 +56,7 @@ end
 
 def say_failure
   puts
-  puts "SORRY, THAT'S " + $n.to_s + " GUESSES."
+  puts "SORRY, THAT'S " + MAX_GUESSES.to_s + " GUESSES."
   puts "THE HURKLE IS AT " + $a.to_s + "," + $b.to_s
 end
 

From 6980dfda94c5f871265fca300ed4684ac1417ebd Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 11:17:00 -0600
Subject: [PATCH 10/12] Add a Point class

---
 51 Hurkle/ruby/hurkle.rb | 46 ++++++++++++++++++++++++++++------------
 1 file changed, 33 insertions(+), 13 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index 24eabf40..7a4e451b 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -1,26 +1,49 @@
 MAX_GUESSES = 5
 GRID_SIZE = 10
 
+class Point < Object
+  attr_accessor :x
+  attr_accessor :y
+
+  def initialize(text="")
+    x, y = text.split(",").map(&:strip)
+    @x = (x || rand(GRID_SIZE).floor).to_i
+    @y = (y || rand(GRID_SIZE).floor).to_i
+  end
+
+  def to_s
+    "#{@x}, #{@y}"
+  end
+
+  def ==(other_point)
+    @x == other_point.x && @y == other_point.y
+  end
+
+  def direction_to(other_point)
+    (  @y < other_point.y ? "NORTH" : "SOUTH" unless @y == other_point.y ).to_s +
+      (@x < other_point.x ? "EAST"  : "WEST"  unless @x == other_point.x ).to_s
+  end
+end
+
 def main
   say_introduction
 
   loop do
-    $a = rand(GRID_SIZE).floor
-    $b = rand(GRID_SIZE).floor
+    hurkle_point = Point.new
     found = false
     (1..MAX_GUESSES).each do |k|
       print "GUESS # " + k.to_s + " "
       print "? "
-      x, y = gets.chomp.split(",").map(&:to_i)
-      if (x-$a).abs + (y-$b).abs == 0
+      guess_point = Point.new(gets.chomp)
+      if guess_point == hurkle_point
         say_success(k)
         found = true
         break
       end
-      say_where_to_go(x, y)
+      say_where_to_go(hurkle_point, guess_point)
       puts
     end
-    say_failure if not found
+    say_failure(hurkle_point) if not found
     say_play_again
   end
 end
@@ -47,17 +70,14 @@ def say_success(k)
   puts "YOU FOUND IT IN " + k.to_s + " GUESSES!"
 end
 
-def say_where_to_go(x, y)
-  print "GO "
-  print y < $b ? "NORTH" : "SOUTH" unless y == $b
-  print x < $a ? "EAST"  : "WEST" unless x == $a
-  puts
+def say_where_to_go(hurkle_point, guess_point)
+  puts "GO #{guess_point.direction_to(hurkle_point)}"
 end
 
-def say_failure
+def say_failure(hurkle_point)
   puts
   puts "SORRY, THAT'S " + MAX_GUESSES.to_s + " GUESSES."
-  puts "THE HURKLE IS AT " + $a.to_s + "," + $b.to_s
+  puts "THE HURKLE IS AT #{hurkle_point}"
 end
 
 def say_play_again

From 31d048e3f9a012ae6376ac66f10d6fe9b312e6bc Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 11:30:11 -0600
Subject: [PATCH 11/12] Modularize a bit, clean up strings a bit

---
 51 Hurkle/ruby/hurkle.rb | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index 7a4e451b..e8b30eee 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -31,21 +31,14 @@ def main
   loop do
     hurkle_point = Point.new
     found = false
-    (1..MAX_GUESSES).each do |k|
-      print "GUESS # " + k.to_s + " "
-      print "? "
-      guess_point = Point.new(gets.chomp)
-      if guess_point == hurkle_point
-        say_success(k)
-        found = true
-        break
-      end
-      say_where_to_go(hurkle_point, guess_point)
-      puts
+    (1..MAX_GUESSES).each do |guess_num|
+      found = guess(hurkle_point, guess_num)
+      break if found
     end
     say_failure(hurkle_point) if not found
     say_play_again
   end
+
 end
 
 def say_introduction
@@ -53,25 +46,37 @@ def say_introduction
   puts " " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY"
   3.times { puts }
   puts
-  puts "A HURKLE IS HIDING ON A " + GRID_SIZE.to_s + " BY " + GRID_SIZE.to_s + " GRID. HOMEBASE"
+  puts "A HURKLE IS HIDING ON A #{GRID_SIZE} BY #{GRID_SIZE} GRID. HOMEBASE"
   puts "ON THE GRID IS POINT 0,0 IN THE SOUTHWEST CORNER,"
   puts "AND ANY POINT ON THE GRID IS DESIGNATED BY A"
   puts "PAIR OF WHOLE NUMBERS SEPERATED BY A COMMA. THE FIRST"
   puts "NUMBER IS THE HORIZONTAL POSITION AND THE SECOND NUMBER"
   puts "IS THE VERTICAL POSITION. YOU MUST TRY TO"
-  puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET " + MAX_GUESSES.to_s + " TRIES."
+  puts "GUESS THE HURKLE'S GRIDPOINT. YOU GET #{MAX_GUESSES} TRIES."
   puts "AFTER EACH TRY, I WILL TELL YOU THE APPROXIMATE"
   puts "DIRECTION TO GO TO LOOK FOR THE HURKLE."
   puts
 end
 
-def say_success(k)
+def guess(hurkle_point, guess_num)
+  print "GUESS # #{guess_num} ? "
+  guess_point = Point.new(gets.chomp)
+  if guess_point == hurkle_point
+    say_success(guess_num)
+    return true
+  end
+  say_where_to_go(hurkle_point, guess_point)
+  false
+end
+
+def say_success(guess_num)
   puts
-  puts "YOU FOUND IT IN " + k.to_s + " GUESSES!"
+  puts "YOU FOUND IT IN #{guess_num} GUESSES!"
 end
 
 def say_where_to_go(hurkle_point, guess_point)
   puts "GO #{guess_point.direction_to(hurkle_point)}"
+  puts
 end
 
 def say_failure(hurkle_point)

From bd8c2dac481a6a2d86a488daf35fb2c869214cde Mon Sep 17 00:00:00 2001
From: Jamie McCarthy <jamie.mccarthy@voxmedia.com>
Date: Mon, 1 Mar 2021 11:33:52 -0600
Subject: [PATCH 12/12] Simplify

---
 51 Hurkle/ruby/hurkle.rb | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/51 Hurkle/ruby/hurkle.rb b/51 Hurkle/ruby/hurkle.rb
index e8b30eee..39898805 100644
--- a/51 Hurkle/ruby/hurkle.rb	
+++ b/51 Hurkle/ruby/hurkle.rb	
@@ -63,10 +63,11 @@ def guess(hurkle_point, guess_num)
   guess_point = Point.new(gets.chomp)
   if guess_point == hurkle_point
     say_success(guess_num)
-    return true
+    true
+  else
+    say_where_to_go(hurkle_point, guess_point)
+    false
   end
-  say_where_to_go(hurkle_point, guess_point)
-  false
 end
 
 def say_success(guess_num)