gui.mli

open Game_utils

(* draw_gui [b] updates the GUI with the current board b *)
val updateboard : board -> unit

(* print_to_cmd [str] prints the [str] to the command display inside the GUI
  preconditions: None
  postconditions: None*)
val print_to_cmd : string -> unit

(* readline [ref lock] [ref str] will set the [ref str] to the user's command
  input after the user enters a command. the function will also lock the Mutex
  [ref lock] that was created in the calling thread, so the calling thread has
  the option to do a busy wait and block until the user has entered a command
  preconditions: None
  postconditions: None*)
val readline : Mutex.t ref -> string ref -> unit

(* Call this function at the start to run the GUI
 * Should be called from a separate thread*)
val main : unit -> unit