Merge pull request #64 from rjnienaber/add_33_dice_in_ruby

Add games in ruby and touch up some others

32 Diamond/ruby/diamond.rb

@@ -11,9 +11,7 @@ end
 def get_facets
   while true
     number = gets.chomp
-    if /^\d+$/.match(number)
-      return number.to_i
-    end
+    return number.to_i if /^\d+$/.match(number)
     puts "!NUMBER EXPECTED - RETRY INPUT LINE"
     print "? "
   end
@@ -42,4 +40,6 @@ def main
   draw_diamonds(lines)
 end
 
+trap "SIGINT" do puts; exit 130 end
+
 main

33 Dice/ruby/dice.rb

@@ -0,0 +1,51 @@
+def intro
+  puts "                                  DICE
+               CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY
+
+
+
+THIS PROGRAM SIMULATES THE ROLLING OF A
+PAIR OF DICE.
+YOU ENTER THE NUMBER OF TIMES YOU WANT THE COMPUTER TO
+'ROLL' THE DICE.  WATCH OUT, VERY LARGE NUMBERS TAKE
+A LONG TIME.  IN PARTICULAR, NUMBERS OVER 5000.
+
+"
+end
+
+def get_rolls
+  while true
+    number = gets.chomp
+    return number.to_i if /^\d+$/.match(number)
+    puts "!NUMBER EXPECTED - RETRY INPUT LINE"
+    print "? "
+  end
+end
+
+def dice_roll = rand(6) + 1 # ruby 3, woot!
+
+def print_rolls(rolls)
+  values = Array.new(11, 0)
+  (1..rolls).each { values[dice_roll + dice_roll - 2] += 1 }
+  puts "\nTOTAL SPOTS   NUMBER OF TIMES"
+  (0..10).each { |k| puts " %-2d            %-2d" % [k + 2, values[k]] }
+end
+
+def main
+  intro
+  loop do
+    print "HOW MANY ROLLS? "
+    rolls = get_rolls
+
+    print_rolls(rolls)
+
+    print "\n\nTRY AGAIN? "
+    option = (gets || '').chomp.upcase
+    break unless option == 'YES'
+    puts
+  end
+end
+
+trap "SIGINT" do puts; exit 130 end
+
+main

78 Sine Wave/ruby/sinewave.rb

@@ -0,0 +1,15 @@
+def intro
+  puts "                              SINE WAVE
+               CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY\n\n\n\n\n\n"
+end
+
+def main
+  intro
+  (0..40).step(0.25).each do |t|
+    a = (26 + 25 * Math.sin(t)).to_i
+    text = (t % 0.5) == 0 ? "CREATIVE" : "COMPUTING"
+    puts " " * a + text
+  end
+end
+
+main

87 3-D Plot/python/3dplot.py

@@ -9,8 +9,8 @@ import math
 def equation(input):
 	return 30 * math.exp(-input * input / 100)
 
-print(" " * 32 + "3D PLOT\n")
-print(" " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY\n")
+print(" " * 32 + "3D PLOT")
+print(" " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY\n\n\n\n")
 
 for x in range (-300, 315, 15):
 	x1 = x / 10
@@ -23,4 +23,4 @@ for x in range (-300, 315, 15):
 		if z > l:
 			l = z
 			yPlot[z] = "*"
-	print("".join(yPlot) + "\n")
+	print("".join(yPlot))

87 3-D Plot/ruby/3dplot.rb

@@ -0,0 +1,28 @@
+def intro
+  puts "                                3D PLOT
+               CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY\n\n\n\n\n"
+end
+
+def fna(z) = 30 * Math.exp(-z * z / 100)
+
+def render
+  (-30..30).step(1.5).each do |x|
+    l = 0
+    y1 = 5 * (Math.sqrt(900 - x * x) / 5).to_i
+    y_plot = " " * 80
+    (y1..-y1).step(-5).each do |y|
+      z = (25 + fna(Math.sqrt(x * x + y * y)) - 0.7 * y).to_i
+      next if z <= l
+      l = z
+      y_plot[z] = '*'
+    end
+    puts y_plot
+  end
+end
+
+def main
+  intro
+  render
+end
+
+main

91 Train/ruby/train.rb

@@ -27,9 +27,9 @@ def main
   intro
 
   loop do
-    car_speed = (Random.rand * 25 + 40).to_i
-    car_time = (Random.rand * 15 + 5).to_i
-    train_speed = (Random.rand * 19 + 20).to_i
+    car_speed = rand(25) + 40
+    car_time = rand(15) + 5
+    train_speed = rand(19) + 20
 
     print " A CAR TRAVELING #{car_speed} MPH CAN MAKE A CERTAIN TRIP IN
  #{car_time} HOURS LESS THAN A TRAIN TRAVELING AT #{train_speed} MPH.