Class: Game

Inherits:
Object
  • Object
show all
Includes:
Curses
Defined in:
lib/ruby-snake/game.rb

Constant Summary collapse

TOP = 
0
BOTTOM = 
22
LEFT = 
0
RIGHT = 
70

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Game

Returns a new instance of Game.



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# File 'lib/ruby-snake/game.rb', line 12

def initialize
  Curses.init_screen

  Curses.noecho # Don't show typed key.

  Curses.stdscr.keypad(true)

  # colors

  Curses.start_color
  Curses.init_pair(COLOR_BLUE, COLOR_BLUE, COLOR_BLUE) # Color of boders

  Curses.init_pair(COLOR_RED, COLOR_RED, COLOR_RED)
  Curses.init_pair(COLOR_BLACK, COLOR_BLACK, COLOR_BLACK)
  Curses.init_pair(COLOR_YELLOW, COLOR_YELLOW, COLOR_YELLOW)
  
  setup    
end

Instance Method Details

#start ⇒ Object 



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# File 'lib/ruby-snake/game.rb', line 28

def start
  # Create a thread to montior key events

  key_listener = Thread.new do
    loop {Thread.current[:key] = Curses.getch}
  end

  while true
    handle_key key_listener[:key]
    if !@pause

      if @dead_snake # erase dead snake

        @dead_snake.body.each {|pos| erase pos}
        erase @dead_snake.food
        @dead_snake = false
      end

      tail = @snake.goto @direction

      if @snake.alive?
        draw_snake
        draw_food
        erase tail
        @speed += 1 if @snake.score / 100 > @speed - 1
      else
        @dead_snake = @snake.dup
        setup
        @message = "You die! Press 'S' to restart the game."
        @pause = true
      end

      draw_ui
      Curses.refresh
      sleep(0.2 * (0.8 ** (@speed - 1)))
    end
    
  end

end