Legs

class Legs
  attr_reader :x
  attr_reader :y
  attr_reader :next_x
  attr_reader :next_y

  def initialize(sprite)
    @frame = 1
    @tick_count = 0
    @sprite = sprite
    @x = 128
    @y = 128
    @next_x = 128
    @next_y = 128
    @depth = 1
  end

  def move(x,y)
    @next_x += x
    @next_y += y
  end

  def jump(x,y)
    @x = x
    @y = y
    @next_x = @x
    @next_y = @y
  end
  def update(world)
    if @next_x == @x && @next_y == @y
      if @frame%2 == 1
        @tick_count += 8
        @tick_count = @tick_count%32
        @frame = @tick_count/8
      end
      if @tick_count%8 != 7
        @tick_count = 8*@frame + 7
      end
    else
      @tick_count += 1
      @tick_count = @tick_count%32
    end
    @frame = @tick_count/8
    if world.valid_move(self, @next_x, @y)
      @x = @next_x
    end
    if world.valid_move(self, @x, @next_y-24)
      @y = @next_y
    end

    @next_x = x
    @next_y = y
  end
  def width
    24
  end
  def height
    48
  end
  def draw
    @sprite[@frame].draw(@x,@y,1+@y)
  end
end