configurable number of mines, display it

ruby/myhunt-curses.rb

@@ -19,7 +19,7 @@ def display_curses( field, state = { dead: false, victory: false } )
   elsif state[:victory]
     Curses.addstr 'You won!! :)    '
   else
-    Curses.addstr "nearby: #{field.count_nearby_mines}        "
+    Curses.addstr "#{field.number_of_mines} mines, #{field.count_nearby_mines} nearby"
   end
 
   field.height.times do |y|
@@ -40,8 +40,8 @@ def display_curses( field, state = { dead: false, victory: false } )
   Curses.refresh
 end
 
-def ncurses_main
+def ncurses_main( number_of_mines )
-  field = MyHunt::Board.new
+  field = MyHunt::Board.new( number_of_mines )
   finished = false
 
   Curses.init_screen
@@ -64,7 +64,7 @@ def ncurses_main
       begin
         case ch
         when 'r'
-          field = MyHunt::Board.new
+          field = MyHunt::Board.new( number_of_mines )
           finished = false
         else
           break
@@ -107,4 +107,7 @@ def ncurses_main
   exit!
 end
 
-ncurses_main
+number_of_mines = 20
+number_of_mines = ARGV.first.to_i if ARGV.length == 1
+
+ncurses_main( number_of_mines )

ruby/myhunt.rb

@@ -22,6 +22,7 @@ module MyHunt
     attr_reader :width,
                 :height,
                 :field,
+                :number_of_mines,
                 :explorer_x,
                 :explorer_y
 
@@ -31,6 +32,11 @@ module MyHunt
       @explorer_x = 0
       @explorer_y = 0
       @field = {}
+      @number_of_mines = if number_of_mines.negative? && number_of_mines > ((@height * @width) - 2)
+                           20
+                         else
+                           number_of_mines
+                         end
 
       @width.times do |x|
         @height.times do |y|
@@ -39,7 +45,7 @@ module MyHunt
       end
 
       placed_mines = 0
-      while placed_mines < number_of_mines
+      while placed_mines < @number_of_mines
         coordinates = [rand( @width ), rand( @height )]
         next if coordinates == [0, 0]
         next if @field[ coordinates ].mine