ROFLBALT World

world.rb

class World
  def initialize horizon
    @ticks = 0
    @horizon = horizon
    @building_generator = BuildingGenerator.new(self, WindowColor.new)
    @background = Background.new(self)
    @player = Player.new(25, @background)
    @buildings = [ @building_generator.build(-10, 30, 120) ]
    @misc = [ Scoreboard.new(self), RoflCopter.new(50, 4, @background) ]
    @speed = 4
    @distance = 0
  end
  attr_reader :buildings, :player, :horizon, :speed, :misc, :ticks, :distance, :background
  def tick
    # TODO: this, but less often.
    if @ticks % 20 == 0
      @building_generator.generate_if_necessary
      @building_generator.destroy_if_necessary
    end

    @distance += speed

    buildings.each do |b|
      b.move_left speed
    end

    if b = building_under_player
      if player.bottom_y > b.y
        b.move_left(-speed)
        @speed = 0
        @misc << Blood.new(player.x, player.y)
        @misc << GameOverBanner.new
        player.die!
      end
    end

    begin
      if STDIN.read_nonblock(1)
        if player.dead?
          return false
        else
          player.jump
        end
      end
    rescue Errno::EAGAIN
    end

    player.tick

    if b = building_under_player
      player.walk_on_building b if player.bottom_y >= b.y
    end

    @ticks += 1
  end
  def building_under_player
    buildings.detect do |b|
      b.x <= player.x && b.right_x >= player.right_x
    end
  end
end