ruby version

myhunt.rb

@@ -0,0 +1,144 @@
+#!/usr/bin/env ruby
+
+module MyHunt
+  class Cell
+    attr_accessor :mine,
+                  :open
+
+    def initialize( mine: false, open: false )
+      @mine = mine
+      @open = open
+    end
+
+    def explore
+      @open = true
+
+      @mine
+    end
+  end
+
+  class Board
+    attr_reader :width,
+                :height,
+                :field,
+                :explorer_x,
+                :explorer_y
+
+    def initialize( number_of_mines = 20, height = 8, width = 16 )
+      @height = height
+      @width = width
+      @explorer_x = 0
+      @explorer_y = 0
+      @field = {}
+
+      @width.times do |x|
+        @height.times do |y|
+          puts "(#{x}, #{y})"
+          @field[[x, y]] = Cell.new( open: x.zero? && y.zero? )
+        end
+      end
+
+      placed_mines = 0
+      while placed_mines < number_of_mines
+        coordinates = [rand( @width ), rand( @height )]
+        next if coordinates == [0, 0]
+        next if @field[ coordinates ].mine
+
+        @field[ coordinates ].mine = true
+        placed_mines += 1
+      end
+    end
+
+    def display
+      puts "nearby: #{count_nearby_mines}"
+      @height.times do |y|
+        @width.times do |x|
+          if [@explorer_x, @explorer_y] == [x, y]
+            putc 'o'
+          elsif [@width, @height] == [x + 1, y + 1]
+            putc '_'
+          elsif @field[[x, y]].open
+            putc @field[[x, y]].mine ? '*' : ' '
+          else
+            putc '█'
+          end
+        end
+        putc "\n"
+      end
+    end
+
+    def update_explorer_location( direction )
+      case direction
+      when 'up'
+        @explorer_y -= 1 if @explorer_y.positive?
+      when 'right'
+        @explorer_x += 1 if @explorer_x < (@width - 1)
+      when 'down'
+        @explorer_y += 1 if @explorer_y < (@height - 1)
+      when 'left'
+        @explorer_x -= 1 if @explorer_x.positive?
+      when 'up-right'
+        if @explorer_x < (@width - 1) && @explorer_y.positive?
+          @explorer_x += 1
+          @explorer_y -= 1
+        end
+      when 'down-right'
+        if @explorer_x < (@width - 1) && @explorer_y < (@height - 1)
+          @explorer_x += 1
+          @explorer_y += 1
+        end
+      when 'down-left'
+        if @explorer_x.positive? && @explorer_y < (@height - 1)
+          @explorer_x -= 1
+          @explorer_y += 1
+        end
+      when 'up-left'
+        if @explorer_x.positive? && @explorer_y.positive?
+          @explorer_x -= 1
+          @explorer_y -= 1
+        end
+      end
+    end
+
+    def move( direction )
+      update_explorer_location( direction )
+
+      if @explorer_x == (@width - 1) && @explorer_y == (@height - 1)
+        puts 'Victory'
+      elsif @field[[@explorer_x, @explorer_y]].explore
+        puts 'Blown up'
+      end
+    end
+
+    def count_nearby_mines
+      counter = 0
+      [@explorer_x - 1, @explorer_x, @explorer_x + 1].each do |x|
+        [@explorer_y - 1, @explorer_y, @explorer_y + 1].each do |y|
+          next if x.negative?
+          next if y.negative?
+          next if x == @width
+          next if y == @height
+          next if x == @explorer_x && y == @explorer_y
+
+          puts "(#{x}, #{y})"
+
+          counter += 1 if @field[[x, y]].mine
+        end
+      end
+
+      counter
+    end
+
+    def debug
+      @height.times { move('down-right') }
+      move( 'right' )
+      @height.times { move('up-right') }
+    end
+  end
+end
+
+field = MyHunt::Board.new
+
+field.display
+field.debug
+field.display