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;;;; A bot for playing rock paper scissors.
(ql:quickload :cl-ppcre)
(defpackage #:roshambot
(:use :cl :granolin))
;; (:import-from :granolin
;; :handle-event
;; :find-contact
;; :text-message-event
;; :send-text-message
;; :let-cond))
(in-package :roshambot)
;;; The logic of roshambot is something like:
;;; 1. A user indicates to the bot that they will to challenge another user to a
;;; game of roshambo "hey bot, roshambo with bob"
;;; 2. If bob is known to the bot then the bot will open a private with both the
;;; initiator, say alice, and with bob and present them with a chance to make a
;;; move or to cancel.
;;; 3. The bot then waits for both users to respond with a move or for either
;;; one of them to cancel.
;;; 4. The bot then reports the outcome of the match (winner bob, winner alice,
;;; or canceled by x) in the room in which the match was initiated.
(defstruct roshambo-match
room
challenger
challenger-room
challenger-move
challenged
challenged-room
challenged-move)
(defclass roshambot ()
((live-matches
:accessor live-matches
:initform nil)))
(defparameter +challenge-regex+
(ppcre:create-scanner " ?i challenge ([a-zA-Z0-9_.-]+) to roshambo"
:case-insensitive-mode t))
(defun you-wanna-piece-of-this!? (str)
"If the string communicates one user's intention to challenge another to
roshambo, returns the name of the user that has been challenged. Returns NIL otherwise."
(let-when (groups (nth-value 1 (ppcre:scan-to-strings +challenge-regex+ str)))
(aref groups 0)))
(defparameter +roshambo-move-regex+
(ppcre:create-scanner "(rock|paper|scissors|cancel)" :case-insensitive-mode t))
(defun roshambo-move!? (str)
(nth-value 0 (ppcre:scan-to-strings +roshambo-move-regex+ str)))
(defmethod handle-event :after ((bot roshambot) (event text-message-event) &optional room-id)
(let ((text (granolin:msg-body event)))
(let-cond
(challenged (you-wanna-piece-of-this!? text)
(format t "should be challenging: ~a~%" text)
(handle-new-challenge bot room-id (granolin:sender event) challenged))
(roshambo-match (challenger-made-move!? bot room-id (granolin::sender event) text)
(handle-match-state-change bot roshambo-match))
(roshambo-match (challenged-made-move!? bot room-id (granolin::sender event) text)
(handle-match-state-change bot roshambo-match)))))
(defun challenger-made-move!? (bot room-id sender text)
(let-when (roshambo-match (find room-id (live-matches bot)
:key #'roshambo-match-challenger-room
:test #'equal))
(unless (roshambo-match-challenger-move roshambo-match)
(let-when (move (and (equal sender (roshambo-match-challenger roshambo-match))
(roshambo-move!? text)))
(setf (roshambo-match-challenger-move roshambo-match) move)
roshambo-match))))
(defun challenged-made-move!? (bot room-id sender text)
(let-when (roshambo-match (find room-id (live-matches bot)
:key #'roshambo-match-challenged-room
:test #'equal))
(unless (roshambo-match-challenged-move roshambo-match)
(let-when (move (and (equal sender (roshambo-match-challenged roshambo-match))
(roshambo-move!? text)))
(setf (roshambo-match-challenged-move roshambo-match) move)
roshambo-match))))
(defun handle-match-state-change (bot roshambo-match)
(let-cond
(cancelled-by (roshambo-cancelled!? roshambo-match)
(send-text-message bot (roshambo-match-room roshambo-match)
"The match between ~a and ~a was canceled by ~a."
(readable-username
(roshambo-match-challenger roshambo-match))
(readable-username
(roshambo-match-challenged roshambo-match))
cancelled-by)
(kill-roshambo-match bot roshambo-match))
(win-list (roshambo-has-winner!? roshambo-match)
(destructuring-bind (winner win-move loser lose-move) win-list
(if (eql winner :draw) ; this is a draw move
(send-text-message bot (roshambo-match-room roshambo-match)
"It's a draw! Both ~a and ~a picked ~a."
(readable-username win-move)
(readable-username loser)
lose-move)
(send-text-message bot (roshambo-match-room roshambo-match)
"~a's ~a beats ~a's ~a! ~a is the winner!~%"
(readable-username winner)
win-move
(readable-username loser)
lose-move
(readable-username winner))))
(kill-roshambo-match bot roshambo-match))))
(defun roshambo-cancelled!? (rmatch)
(cond ((and (roshambo-match-challenger-move rmatch)
(string-equal "cancel" (roshambo-match-challenger-move rmatch)))
(roshambo-match-challenger rmatch))
((and (roshambo-match-challenged-move rmatch)
(string-equal "cancel" (roshambo-match-challenged-move rmatch)))
(roshambo-match-challenged rmatch))))
(defun roshambo-has-winner!? (rsb)
(with-slots (challenger challenger-move challenged challenged-move) rsb
(when (and challenger-move challenged-move
(not (string-equal "cancel" challenger-move))
(not (string-equal "cancel" challenged-move)))
(cond ((string-equal challenger-move challenged-move)
(list :draw challenger challenged challenger-move)) ; both had same move
((and (string-equal "rock" challenger-move)
(string-equal "scissors" challenged-move))
(list challenger challenger-move challenged challenged-move))
((and (string-equal "paper" challenger-move)
(string-equal "rock" challenged-move))
(list challenger challenger-move challenged challenged-move))
((and (string-equal "scissors" challenger-move)
(string-equal "paper" challenged-move))
(list challenger challenger-move challenged challenged-move))
((and (string-equal "rock" challenged-move)
(string-equal "scissors" challenger-move))
(list challenged challenged-move challenger challenger-move))
((and (string-equal "paper" challenged-move)
(string-equal "rock" challenger-move))
(list challenged challenged-move challenger challenger-move))
((and (string-equal "scissors" challenged-move)
(string-equal "paper" challenger-move))
(list challenged challenged-move challenger challenger-move))))))
(defun kill-roshambo-match (bot roshambo-match)
(setf (live-matches bot)
(delete roshambo-match (live-matches bot))))
(defun handle-new-challenge (bot room-id challenger challenged)
(let ((challenger-room (ensure-direct-room bot challenger))
(challenged-room (ensure-direct-room bot challenged :like t)))
(if (and (send-text-message
bot
challenger-room
"You have challenged ~a to roshambo. Reply with Rock, Paper, Scissors or Cancel."
challenged)
(send-text-message
bot
challenged-room
"~a has challenged you to roshambo. Reply with Rock, Paper, Scissors, or Cancel."
challenger))
(push (make-roshambo-match :room room-id
:challenger challenger
:challenger-room challenger-room
:challenger-move nil
:challenged (find-contact bot challenged :like t)
:challenged-room challenged-room
:challenged-move nil)
(live-matches bot))
(send-text-message bot room-id "Some kind of problem starting a roshambo match :("))))
(defclass roshambo-bot (granolin:client granolin:server-directory roshambot) ())
;; (defmethod handle-event :after ((bot roshambot-bot) (ev timeline-event) &optional room-id)
;; (format t "~a - ~a:~% ~a~%" room-id (granolin::sender ev) (granolin:msg-body ev)))
(defmethod handle-event :after ((bot roshambo-bot) (ev text-message-event) &optional room-id)
(format t "~a - ~a:~% ~a~%" room-id (granolin::sender ev) (granolin:msg-body ev)))
(defmethod handle-event :after ((bot roshambo-bot)
(ev granolin::account-data-event)
&optional room-id)
(format t "~a ~a" (event-type ev) (event-content ev)))
(defvar *roshambot* (make-instance 'roshambo-bot
:homeserver "https://matrix.hrlo.world"))
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