Move game loop into a class.

hrdlr.rb

@@ -1,49 +1,4 @@
 $: << File.dirname(__FILE__) + '/lib'
+require 'game'
 
-require 'sprite'
-require 'player'
-require 'track'
-require 'frame'
-
-Frame.setup
-
-track = Track.new(50, 15)
-player = Player.new track
-tick_count = 0
-
-while true do
-  tick_count += 1
-
-  player.tick
-
-  frame = Frame.new 80, 6
-  viewport_x = player.x - 4
-  frame.draw 0, 0, Sprite.track_line
-  frame.draw 0, 5, Sprite.track_line
-  frame.draw player.x-viewport_x, 2-player.y, Sprite.player(player.state)
-  track.get_hurdles(viewport_x...viewport_x+80).each do |hurdle_x|
-    frame.draw hurdle_x-viewport_x, 4, Sprite.hurdle
-  end
-  if (0...32).cover?(tick_count)
-    frame.draw_center 1, 'HURDLURR!!!'
-    if tick_count % 8 >= 4
-      frame.draw_center 2, 'Press <Space> to jump!'
-    end
-  end
-  frame.render
-
-  sleep 0.1
-
-  begin
-    loop do
-      key = $stdin.read_nonblock(1).ord
-      case key
-      when 'q'.ord, 27, 3 # escape, ctrl-c
-        exit
-      when 32 # space
-        player.jump
-      end
-    end
-  rescue Errno::EAGAIN
-  end
-end
+Game.new.insert_coin

lib/game.rb

@@ -0,0 +1,51 @@
+require 'sprite'
+require 'player'
+require 'track'
+require 'frame'
+
+class Game
+  def insert_coin
+    Frame.setup
+
+    track = Track.new(50, 15)
+    player = Player.new track
+    tick_count = 0
+
+    while true do
+      tick_count += 1
+
+      player.tick
+
+      frame = Frame.new 80, 6
+      viewport_x = player.x - 4
+      frame.draw 0, 0, Sprite.track_line
+      frame.draw 0, 5, Sprite.track_line
+      frame.draw player.x-viewport_x, 2-player.y, Sprite.player(player.state)
+      track.get_hurdles(viewport_x...viewport_x+80).each do |hurdle_x|
+        frame.draw hurdle_x-viewport_x, 4, Sprite.hurdle
+      end
+      if (0...32).cover?(tick_count)
+        frame.draw_center 1, 'HURDLURR!!!'
+        if tick_count % 8 >= 4
+          frame.draw_center 2, 'Press <Space> to jump!'
+        end
+      end
+      frame.render
+
+      sleep 0.1
+
+      begin
+        loop do
+          key = $stdin.read_nonblock(1).ord
+          case key
+          when 'q'.ord, 27, 3 # escape, ctrl-c
+            exit
+          when 32 # space
+            player.jump
+          end
+        end
+      rescue Errno::EAGAIN
+      end
+    end
+  end
+end