Class: Game

Inherits:
Object
  • Object
show all
Defined in:
lib/tetris/game.rb

Instance Method Summary collapse

Constructor Details

#initialize(w, h, speed, font_file) ⇒ Game

Returns a new instance of Game.



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# File 'lib/tetris/game.rb', line 2

def initialize(w, h, speed, font_file)
  # Setup rubygame stuff
  @screen = Rubygame::Screen.new([w * $TileSize, h * $TileSize], 0, 
                                 [Rubygame::HWSURFACE, Rubygame::DOUBLEBUF])
  @queue = Rubygame::EventQueue.new
  @clock = Rubygame::Clock.new
  @clock.target_framerate = 30
  Rubygame::TTF.setup
  @ttf = Rubygame::TTF.new(font_file, 20)

  # Setup the game of tetris
  @screen.title = "Tetris"
  @map = Map.new(w, h)
  @piece = Piece.new
  @background = :white
  @speed = speed
  @step = 0
  @score = 0
end

Instance Method Details

#draw ⇒ Object 



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# File 'lib/tetris/game.rb', line 72

def draw
  @screen.fill(@background)
  
  draw_squares = lambda {|x, y, colour| draw_square(x, y, colour)}
  @piece.squares.each &draw_squares
  @map.squares.each &draw_squares

  @ttf.render("Score: " + @score.to_s, true, :black).blit(@screen, [0,0])
  @screen.flip
end

#draw_square(x, y, colour, border = true) ⇒ Object 



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# File 'lib/tetris/game.rb', line 61

def draw_square(x, y, colour, border=true)
  # Setup the points for SDL
  x_pos = x * $TileSize
  y_pos = y * $TileSize
  pt1 = [x_pos, y_pos]
  pt2 = [x_pos + $TileSize, y_pos + $TileSize]
  # Draw the square and then the border
  @screen.draw_box_s(pt1, pt2, colour)
  @screen.draw_box(pt1, pt2, :black) if border
end

#run ⇒ Object 



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# File 'lib/tetris/game.rb', line 22

def run
  loop do
    update(@clock.tick)
    draw
  end
end

#update(time_delta) ⇒ Object 



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# File 'lib/tetris/game.rb', line 29

def update(time_delta)
  # Process the event queue
  @queue.each do |ev|
    case ev
    when Rubygame::KeyDownEvent
      case(ev.key)
      when Rubygame::K_LEFT
        @piece.move(-1, 0, @map)
      when Rubygame::K_RIGHT
        @piece.move(1, 0, @map)
      when Rubygame::K_DOWN
        @piece.move(0, 1, @map)
      when Rubygame::K_UP
        @piece.rotate(@map)
      when Rubygame::K_SPACE
        @piece.drop(@map)
      end
    when Rubygame::QuitEvent
      Rubygame.quit
      exit        
    end
  end
  # Update the game state
  @step += time_delta
  if @step > @speed
    @step -= @speed
    @piece.move(0, 1, @map)
  end
  @piece.update(@map) {|x, y, colour| @map.set(x, y, colour)}
  @score += @map.update
end