anchor: love.window.getPosition
  Gets the position of the window on the screen.
  
  The window position is in the coordinate space of the display it is currently in.
  x, y, displayindex = love.window.getPosition()
  x number The x-coordinate of the window's position.
  y number The y-coordinate of the window's position.
  displayindex number The index of the display that the window is in.