5 ;;; 8sync --- Asynchronous programming for Guile
6 ;;; Copyright (C) 2016 Christopher Allan Webber <cwebber@dustycloud.org>
8 ;;; This file is part of 8sync.
10 ;;; 8sync is free software: you can redistribute it and/or modify it
11 ;;; under the terms of the GNU Lesser General Public License as
12 ;;; published by the Free Software Foundation, either version 3 of the
13 ;;; License, or (at your option) any later version.
15 ;;; 8sync is distributed in the hope that it will be useful,
16 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;;; GNU Lesser General Public License for more details.
20 ;;; You should have received a copy of the GNU Lesser General Public
21 ;;; License along with 8sync. If not, see <http://www.gnu.org/licenses/>.
23 ;; Puppet show simulator.
25 (use-modules (8sync agenda)
26 (8sync systems actors)
31 (set! *random-state* (random-state-from-platform))
32 (define (random-choice lst)
33 (list-ref lst (random (length lst))))
37 '("Henry" "Harmony" "Rolf"))
39 (define (student-name-generator)
40 ;; a hashmap of student names with their current count
41 (define student-count (make-hash-table))
43 (let* ((student (random-choice student-names))
44 (current-number (hash-ref student-count student 1)))
45 (hash-set! student-count student (1+ current-number))
46 (format #f "~a-~a" student current-number))))
49 (define-class <student> (<actor>)
50 (name #:init-keyword #:name)
52 #:accessor student-dead)
57 (lambda (actor message)
58 "Go bother a professor"
59 (while (not (student-dead actor))
60 (format #t "~a: Bother bother bother!\n"
61 (actor-id-actor actor))
63 actor (message-ref message 'target)
65 #:noise "Bother bother bother!\n"))))
67 (be-lambda-consvardraed
68 (lambda (actor message)
69 "This kills the student."
70 (format #t "~a says: AAAAAAAHHHH!!! I'm dead!\n"
71 (actor-id-actor actor))
72 (set! (student-dead actor) #t))))))
75 '("Hey!" "Stop that!" "Oof!"))
77 (define (professor-be-bothered actor message)
78 (define whos-bothering (professor-bothered-by actor))
80 (hash-set! whos-bothering (message-from message) #t)
83 (display (string-append (random-choice complaints)))
85 ;; More than one student is bothering us, lose our temper
86 (if (> (hash-count (const #t) whos-bothering)
89 (format #t "~s: LAMBDA CONSVARDRA!\n"
95 'be-lambda-consvardraed)
96 ;; Remove student from bothering list
97 (hash-remove! whos-bothering student))
99 ;; Otherwise, remove them from the list and carry on
100 (hash-remove! whos-bothering (message-from message))))
102 (define-class <professor> (<actor>)
103 ;; This value checks whether any other actor is currently
104 ;; bothering this same character.
105 ;; We'll use a hash table as a fake set.
106 (bothered-by #:init-thunk make-hash-table
107 #:getter professor-bothered-by)
110 (make-action-dispatch
111 (be-bothered professor-be-bothered))))
113 (define num-students 10)
115 (define (main . args)
116 (define agenda (make-agenda))
117 (define hive (make-hive))
118 (define professor (hive-create-actor hive <professor>))
119 (define namegen (student-name-generator))
123 (hive-create-actor* hive <student>
125 (iota num-students)))
127 ;; Bootstrap each student into bothering-professor mode.
128 (define start-bothering-tasks
131 (hive-bootstrap-message hive student 'bother-professor
135 (ez-run-hive hive start-bothering-tasks))