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Mini ATRAN, written in logo. ;; Copyright (C) 2004 Gabor Csardi <csardi@rmki.kfki.hu>;; MTA RMKI, Konkoly-Thege Miklos st. 29-33, Budapest 1121, Hungary;;;; Original ATRAN was written by Bradly S. Boven ;; at Kalamazoo College, Kalamazoo, MI, USA;;;; This program is free software; you can redistribute it and/or modify;; it under the terms of the GNU General Public License as published by;; the Free Software Foundation; either version 2 of the License, or;; (at your option) any later version.;; ;; This program is distributed in the hope that it will be useful,;; but WITHOUT ANY WARRANTY; without even the implied warranty of;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the;; GNU General Public License for more details.;; ;; You should have received a copy of the GNU General Public License;; along with this program; if not, write to the Free Software;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Definitions;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;breeds [ agents tasks ]globals [ time ;; simulation time step debug? ;; should we print debug messages? total-no-of-tasks ;; all the tasks ever created no-of-completed-tasks ;; the job is done no-of-deleted-tasks ] ;; deadline expired agents-own [ agent-type ;; aka trait current-task ;; the task it is working on pending-tasks ;; the other tasks waiting friends ] ;; the list of the friends tasks-own [ task-type ;; aka trait complexity ;; the amount of time needed to solve it deadline ;; the furthest time step to solve the problem assigned? ] ;; is this task already assigned to an agent? ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; General functions: setup and go;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; initialization, create the agents and the networkto setup ca set time 0 create-agents create-networkend;; main programto go set time ( time + 1 ) create-new-tasks delete-expired-tasks solve-tasks do-plotsend;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Other generic functions for synchronization;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; create the agentsto create-agents if debug? = 1 [ print "Create " + no-of-agents + " agents." ] create-custom-agents no-of-agents [ agent-init ]end;; create new tasks;; todo: - should be a random processto create-new-tasks locals [ new-tasks ] if debug? = 1 [ print "Create a new task." ] create-custom-tasks task-per-time-step [ task-init ] set new-tasks tasks with [ assigned? = false ] ask new-tasks [ assign-task-to-random-agent ] ask new-tasks [ set assigned? true ]end;; initialize the network;; todo: - other network typesto create-network if debug? = 1 [ print "Create the network" ] ask agents [ set friends random-n-of 2 ( agents with [ self != myself ] ) ]end;; delete all the expired tasks in the systemto delete-expired-tasks locals [ no-of-my-tasks ] if debug? = 1 [ print "Delete expired tasks" ] ask agents [ without-interruption [ set pending-tasks ( pending-tasks with [ deadline > time ] ) ] ] without-interruption [ set no-of-my-tasks count tasks ask tasks with [ deadline <= time ] [ die ] set no-of-deleted-tasks no-of-deleted-tasks + no-of-my-tasks - count tasks if debug? = 1 and no-of-my-tasks != count tasks [ print no-of-my-tasks - count tasks + " tasks deleted." ] ]end;; do some work on solving the tasks in the systemto solve-tasks ask agents [ agent-solve-task ]end;; assigns the task to the agentto assign-task-to-agent [ my-task my-agent ] locals [ task-list ] if debug? = 1 [ print "Task " + value-from my-task [ who ] + " assigned to agent " + value-from my-agent [ who ] + "." ] without-interruption [ ask my-agent [ set task-list values-from pending-tasks [ who ] set task-list lput ( value-from my-task [ who ] ) task-list set pending-tasks tasks with [ member? who task-list ] ] ]end;; create the plotsto do-plots set-current-plot "Working agents & tasks" set-current-plot-pen "tasks" plot count tasks set-current-plot-pen "agents" plot count agents with [ current-task != nobody ]end;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Agent member functions (sic!);;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; initialize a single agentto agent-init if debug? = 1 [ print "Agent " + who + " init." ] set agent-type random agent-types set current-task nobody ;; isn't working on anything set pending-tasks tasks with [ false ] ;; empty set set friends agents with [ false ] ;; empty set set shape "person" be-idle ;; go to restend;; the agent solves a taskto agent-solve-task if agent-strategy = "stingy" [ agent-solve-task-stingy ] if agent-strategy = "lazy" [ agent-solve-task-lazy ]end;; goes to the corner and does nothingto be-idle if xcor != ( - screen-edge-x + who ) or ycor != screen-edge-y [ set heading towards patch ( - screen-edge-x + who ) ( screen-edge-y ) jump distance patch ( - screen-edge-x + who ) ( screen-edge-y ) set heading 90 ]end;; selects which task will be the next to solve;; todo: - more sophisticated approachto-report select-task-to-work-on report random-one-of pending-tasksend;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Agent strategies;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; stingy strategy: don't give the tasks to anybody;; todo: - make use of task-type and agent-typeto agent-solve-task-stingy if current-task = nobody [ if any? pending-tasks [ set current-task select-task-to-work-on ask current-task [ set color green ] set heading towards-nowrap current-task jump distance-nowrap current-task - 1 set pending-tasks pending-tasks with [ self != value-from myself [ current-task ] ] ] ] if current-task != nobody [ ask current-task [ set complexity complexity - 1 ] if value-from current-task [ complexity ] = 0 [ set no-of-completed-tasks no-of-completed-tasks + 1 ask current-task [ die ] set current-task nobody be-idle ] ]end;; lazy strategy: pass a random task to a friend ;; if we have more than one pending;; todo: - make use of task-type and agent-typeto agent-solve-task-lazy locals [ my-task ] if count pending-tasks > 1 [ set my-task random-one-of pending-tasks without-interruption [ assign-task-to-agent my-task ( random-one-of friends ) set pending-tasks pending-tasks with [ self != my-task ] ] ] agent-solve-task-stingyend;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Task member functions;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; initialize a task;; todo: - random complexity ;; - random deadlineto task-init locals [ my-patch ] set task-type random agent-types set complexity 1 + random 5 set deadline time + complexity + random 2 set assigned? false set color grey set shape "box" set my-patch random-one-of patches with [ not any? turtles-here and pycor != screen-edge-y ] if my-patch = nobody [ set my-patch patch 0 0 ] set heading towards my-patch⌨️ 快捷键说明
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