Tel Aviv Under Fire

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Default-person Arthur Hjorth (Author)

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breed [commuters commuter]
breed [explosions explosion]
breed [telavivs telaviv]

commuters-own [hit?]
explosions-own [duration]

globals [made-it hit rocket-timer attempts]

to setup
  ca
  reset-ticks
  create-telavivs 1 [set shape "circle" set size 6 set color blue]
  ask telavivs [stamp]
  ask telavivs [die]
  set made-it 0
  set hit 0
  set rocket-timer 0
  set attempts 0
  create-commuters 1 [set hit? false set xcor -4 set heading 90 set shape "car" set size .2]
end 

to go
  ;; move commuters
  commuters-move
  ;; hamas fires rockets
  rockets-landing
  ;; check if a rocket hits
  check-impact
  ;; advance 'age' of explosions and remove if they are over
  explosions-duration
  
  ;; check if commuter made it to work
  check-if-made-it
  
  ;; if no commuters active, make a new one
  if count commuters < 1[
    next-commuter
    ;; add to total number of attempts made at crossing tel aviv
    set attempts attempts + 1
  ]
  ;; stop after 100,000 attempts
  if attempts >= 100000 [stop]
  
  tick
end 

to commuters-move
  ;; since one tick is a second, and one patch is one kilometer, we move 
  ;; .0003 patch per tick per km/h
  ask commuters [fd .0003 * travel-speed]
end 

to check-impact
  ask explosions[
    ;; check if there are any commuters within explosion-radius distance
    if any? commuters with [distance myself < explosion-radius / 1000]
    [
      ;; if there is, the commuter is hit
      let nearby-commuter one-of commuters with [distance myself < explosion-radius / 1000]
      ask nearby-commuter [
        ;; add to global paramter that counts how many were hit
        set hit hit + 1
        die]
    ]
  ]
end 

to rockets-landing
  ;; add to rocket timer
  set rocket-timer rocket-timer + 1
  if rocket-timer >= seconds-between-rockets
  [
    ;; center explosion (has random heading), then forward radius of tel aviv (3 patches)
    ;; good, turtle perspective on random distribution on a circle
    create-explosions 1 [
      ;; hide it or it gets ugly
      ht 
      set shape "circle"
      ;; size accordingly
      set size explosion-radius / 1000 
      set color red 
      fd random-float 3 
      st 
      ;; set set duration of this explosion to global parameter value
      set duration explosion-duration
    ]
    ;; reset rocket timer if rocket fired
    set rocket-timer 0
  ]
end 

to explosions-duration
  ask explosions[
    ;; count down and die
    set duration duration - 1
    if duration <= 0 [die]
  ]
end 

to check-if-made-it
  ;; this checks if commuter made it across tel aviv
  ask commuters with [xcor > 4.2 ] [
    ;; add to global counter for people who made it
    set made-it made-it + 1 
    die]
end 

to next-commuter
  ;; make a new commuter
    create-commuters 1 [set hit? false set xcor -4 set heading 90 set shape "car" set size .2]
end 

There is only one version of this model, created over 11 years ago by Arthur Hjorth.

Attached files

File Type Description Last updated
Tel Aviv Under Fire.png preview Preview for 'Tel Aviv Under Fire' almost 11 years ago, by Arthur Hjorth Download

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