;; -*- Mode: Lisp; -*-

;;;; Description of the Boston Subway system

;;; Copyright (c) 1983-1991, Kenneth D. Forbus, Northwestern University,
;;; and Johan de Kleer, the Xerox Corporation.
;;; All rights reserved.

;;; See the file legal.txt for a paragraph stating scope of permission
;;; and disclaimer of warranty.  The above copyright notice and that
;;; paragraph must be included in any separate copy of this file.

(in-package :cl-user)

;;;   (Note: this map is quite sketchy)
(defline red-line)
(defline green-line)
(defline orange-line)
(defline blue-line)

(defstation airport (blue-line) 4.0 1.0)
(defstation aquarium (blue-line) 3.75 0.1)
(defstation wood-island (blue-line) 5.0 2.0)
(defstation state-street (blue-line orange-line) 3.1 -0.75)

(defstation park-street (green-line red-line) 2.5 -0.5)
(defstation government-center (green-line blue-line) 2.9 -0.25)
(defstation copley-square (green-line) 1.0 -1.0)
(defstation boston-u (green-line) -1.0 -1.0)
(defstation north-station (green-line orange-line) 2.5 0.75)
(defstation haymarket (orange-line green-line) 2.75 0.5)

(defstation south-station (red-line) 3.0 -1.0)
(defstation washington (red-line orange-line) 2.75 -0.75)
(defstation kendall-square (red-line) 1.0 0.0)
(defstation central-square (red-line) -1.0 0.0)
(defstation harvard-square (red-line) -2.0 1.0)