Bounce Example

Bounce Example preview image

1 collaborator

Uri_dolphin3 Uri Wilensky (Author)

Tags

code example 

Tagged by Reuven M. Lerner about 11 years ago

Model group CCL | Visible to everyone | Changeable by group members (CCL)
Model was written in NetLogo 5.0.4 • Viewed 1079 times • Downloaded 84 times • Run 1 time
Download the 'Bounce Example' modelDownload this modelEmbed this model

Do you have questions or comments about this model? Ask them here! (You'll first need to log in.)


Comments and Questions

Click to Run Model

to setup
  clear-all
  set-default-shape turtles "circle"
  draw-walls
  crt 5                                 ;; create some turtles
    [ randomize ]                       ;; place them randomly
  reset-ticks
end 

; draws the boundaries (walls) of the "billiard table"

to draw-walls
  ; draw left and right walls
  ask patches with [abs pxcor = max-pxcor]
    [ set pcolor blue ]
  ; draw top and bottom walls
  ask patches with [abs pycor = max-pycor]
    [ set pcolor blue ]
end 

; set random location

to randomize
  setxy random-xcor random-ycor
  if pcolor = blue       ; if it's on the wall...
    [ randomize ]        ; ...try again
end 

to go
  ask turtles [
    ifelse leave-trace?             ;; the turtle puts its pen up or down depending on the
      [ pd ]                        ;; value of the LEAVE-TRACE? switch
      [ pu ]
    bounce
    fd 0.1
  ]
  tick
end 

;; this procedure checks the coordinates and makes the turtles
;; reflect according to the law that the angle of reflection is
;; equal to the angle of incidence

to bounce  ;; turtle procedure
  ; check: hitting left or right wall?
  if abs [pxcor] of patch-ahead 0.1 = max-pxcor
    ; if so, reflect heading around x axis
    [ set heading (- heading) ]
  ; check: hitting top or bottom wall?
  if abs [pycor] of patch-ahead 0.1 = max-pycor
    ; if so, reflect heading around y axis
    [ set heading (180 - heading) ]
end 


; Public Domain:
; To the extent possible under law, Uri Wilensky has waived all
; copyright and related or neighboring rights to this model.

There are 10 versions of this model.

Uploaded by When Description Download
Uri Wilensky almost 11 years ago Updated to NetLogo 5.0.4 Download this version
Uri Wilensky over 11 years ago Updated version tag Download this version
Uri Wilensky about 12 years ago Updated to NetLogo 5.0 Download this version
Uri Wilensky almost 14 years ago Updated from NetLogo 4.1 Download this version
Uri Wilensky almost 14 years ago Updated from NetLogo 4.1 Download this version
Uri Wilensky almost 14 years ago Updated from NetLogo 4.1 Download this version
Uri Wilensky almost 14 years ago Updated from NetLogo 4.1 Download this version
Uri Wilensky almost 14 years ago Model from NetLogo distribution Download this version
Uri Wilensky almost 14 years ago Bounce Example Download this version
Uri Wilensky almost 14 years ago Bounce Example Download this version

Attached files

File Type Description Last updated
Bounce Example.png preview Preview for 'Bounce Example' almost 11 years ago, by Uri Wilensky Download

This model does not have any ancestors.

This model does not have any descendants.