class Demigod

# File lib/demigodGame/Demigod.rb, line 21
def initialize (world, resources = GameData::STARTING_RESOURCES)
  @world = world
  @resources = resources
end

# File lib/demigodGame/Demigod.rb, line 27
def turn

  # calculates new amount of resources using the production function
  # world.production accepts a resources hash and returns a newly
  # calculated resource hash based on production
  @resources = @world.production(@resources)
  p @resources

  #do_event # ========= TODO ========= #

  # part 2 of every turn
  UiHandler.print_world(@world)
  UiHandler.print_turn_message

  # Asks the user for a tile to do his action on
  decision = UiHandler.get_decision()

  until (@world.valid?(decision) || decision == '')
    UiHandler.print_error(UiHandler::NO_TILE)
    UiHandler.print_turn_message
    decision = UiHandler.get_decision()
  end

  unless decision == ''
    tile = @world.get_tile decision # returns the tile at decision

    # checks for legality of move on tiles using tile.accepts? and tile.check_cost
    until tile.accepts?(decision)
      break if decision == ''
      UiHandler.print_tile_options(tile)
      decision = UiHandler.get_decision()
      if (!tile.accepts?(decision))
        UiHandler.print_error(UiHandler::INVALID)
      elsif (!tile.check_cost(decision, @resources))
        decision = nil
        UiHandler.print_error(UiHandler::RESOURCES)
      end
    end

    if decision != ''
      price = GameData.get_price(decision)
      @resources = reduce(price)
      @world.advance(tile, decision)
    end
  end

  # Clears the screen
  UiHandler.clear_messages()
end

# File lib/demigodGame/Demigod.rb, line 80
  def do_event
=begin

     event = Events.new(@resources[:luck])
    # starts an event
    event.start
    decision = gets.chomp

    until event.accepts? decision # Requires valid input
      UiHandler.print_error(event.valid_range)
      decision = gets.chomp
    end

    # event.dispatch accepts player decision and affects the world
    # returning new number of resources
    @resources = event.dispatch(decision)

=end
  end

# File lib/demigodGame/Demigod.rb, line 101
def reduce(amount)
  amount.each do |name, value|
    @resources[name] -= value
  end
  @resources
end