The purpose of Face Routing is to show how faces in the network can be routed around. After the SEND mote sends out its INIT message, motes in the IDLE state relay that message along by selecting the next neighbor in the anti-clockwise direction. All of these messages will eventually arrive back at the SEND mote which will report that it has received the message.
Code designed by Matt Duckham. Additional coding by Alan Both.
Copyright 2011, 2012 Matt Duckham
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 3 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 http://www.gnu.org/licenses/ for more details.
The formal specification procedure used for all the protocols on this site is based on the standard distributed systems approach of Nicola Santoro (see Santoro, N. Design and Analysis of Distributed Algorithms. Wiley, Hoboken, NJ. 2007.) For more details on the protocol specification style, please refer to the book accompanying book for this website, Decentralized Spatial Computing: Foundations of Geosensor Networks.
;; Copyright 2011, 2012 Matt Duckham ;; ;; 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 3 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, see <http://www.gnu.org/licenses/>. __includes["../gsn.nls"] ;; Define a new breed of turtle called motes breed [motes mote] ;; System setup and initialization to initialize if NetworkStructure = "UDG" [create-udg] ;; Create UDG network if NetworkStructure = "GG" [create-udg create-gg] ;; Create GG network if NetworkStructure = "RNG" [create-udg create-rng] ;; Create RNG network ask motes [become "IDLE"] ;; Set all motes to state INIT ask one-of motes [ set size (size * 1.5) ;; The SEND mote is larger than other motes become "SEND" ;; Set one mote to state SEND broadcast (list "INIT" who) ;; Broadcast 'ping' with id to neighbors ] end ;; Runs the face routing algorithm to go ask motes [ step ] mote_labels ;; Changes the labels of the motes based on the MoteLabel dropdown list tick end ;; ;; Mote protocols ;; ;; Step through the current state to step if state = "SEND" [ step_SEND stop ] if state = "IDLE" [ step_IDLE stop ] end ;; Sends an INIT message to neighbors, then waits for a response. to step_SEND if has-message "INIT" [ ;; Receiving INIT message let msg received "INIT" show "Message routed around face" stop ] end ;; Motes in the IDLE state respond to an INIT message by passing the message along to ;; the next neighbor in the anti-clockwise direction. to step_IDLE if has-message "INIT" [ ;; Receiving INIT message let msg received "INIT" let i item 1 msg send (list "INIT" who) (mote cyc i) ;; Route message to next neighbor in cyclic order ask link-with mote cyc i [ ;; Making the path taken by the message thick and orange in color set color orange set thickness 0.15 ] stop ] end ;; Changing the labels of the motes based on the MoteLabel dropdown list to mote_labels ask motes [ if MoteLabel = "none" [set label ""] ;; Hide the label if MoteLabel = "mote id" [set label who] ;; Show mote id ] end
The NetLogo procedures for this applet can be downloaded directly as: Protocol5.5.nlogo
All the NetLogo simulation models for this book depend on two library files: gsn.nls and env.nls
These files should be placed in the parent directory of the .nlogo file (and are common to all the .nlogo models on this website).