(chess-message-catalog 'english
'((queen-would-take . "The queen would take your knight!")
(congratulations . "Congratulations!")
- (knight-1-done . "Goal: take all the pawns, without letting the queen take your knight")))
+ (knight-1-done . "Goal: take all the pawns, without letting the queen take your knight")
+ (cannot-take-queen . "You cannot take the queen")))
(defun chess-tutorial-knight-1 (game ignore event &rest args)
(if (eq event 'move)
(let ((position (chess-game-pos game)))
(if (null (chess-pos-search position ?p))
(chess-message 'congratulations)
- (when (chess-search-position
- position (car (chess-pos-search position ?N)) ?q)
- (chess-game-run-hooks chess-module-game 'undo 1)
- (chess-display-update nil)
- (chess-error 'queen-would-take))))))
+ (cond
+ ((chess-search-position position
+ (car (chess-pos-search position ?N)) ?q)
+ (let ((chess-display-handling-event nil))
+ (chess-game-undo game 1))
+ (chess-error 'queen-would-take))
+ ((not (chess-pos-search position ?q))
+ (let ((chess-display-handling-event nil))
+ (chess-game-undo game 1))
+ (chess-error 'cannot-take-queen)))))))
+;;;###autoload
(defun chess-tutorial ()
+ "A simple chess training display."
(interactive)
- (let* (chess-default-modules
- (display (chess-create-display)))
- (with-current-buffer display
- (chess-game-set-start-position
- (chess-display-game nil)
- (chess-fen-to-pos "8/3p1p/2p3p/4q/2p3p/3p1p/8/N w - -"))
- (chess-game-add-hook (chess-display-game nil) 'chess-tutorial-knight-1)
- (setq chess-pos-always-white t)
- (chess-display-popup nil)
- (chess-message 'knight-1-done))))
+ (with-current-buffer (chess-create-display t)
+ (chess-module-set-leader nil)
+ (chess-display-set-from-fen "8/3p1p/2p3p/4q/2p3p/3p1p/8/N w - -")
+ (chess-game-add-hook (chess-display-game nil) 'chess-tutorial-knight-1)
+ (setq chess-pos-always-white t)
+ (chess-display-popup nil)
+ (chess-message 'knight-1-done)))
(provide 'chess-tutorial)