How can I make the model run? - netlogo

Question

I am essentially trying to combine elements of the 'Segregation' model and 'Rebellion' model to form a model that is representative of alliance forming.
Here is what I have so far- when I attempt to run it I receive the error: THREATS breed does not own variable ACTIVE?
error while threat 0 running ACTIVE?
called by procedure GO
called by Button 'go'
breed [ agents an-agent]
breed [ threats threat ]
globals [
k ; factor for determining attack probability
threshold ; by how much must D - BS > A to make a state burden share
percent-similar ; on the average, what percent of a turtle's neighbors
; are the same color as that turtle? Likely to ally
percent-unhappy ; what percent of the turtles are unhappy? Or percieve threats?
visualization
]
agents-own [
allied-states ; R, fixed for the agent's lifetime, ranging from 0-1 (inclusive)- for each turtle, indicates whether at least %-similar-wanted percent of
; that turtle's neighbors are the same color as the turtle
perceived-threat ; T, also ranging from 0-1 (inclusive)- how many have a turtle of another color?
active? ; if true, then the agent is actively allied
; if false, then the agent is free-riding
conflict ; how many turns in conflict remain? (if 0, the agent is not in conflict)- sum of previous two variables
total-nearby ; sum of previous two variables
]
patches-own [
neighborhood ; surrounding patches within the vision radius
]
to setup
clear-all
; set globals
set k 2.3
set threshold 0.1
ask patches [
; make background a slightly dark gray
set pcolor gray - 1
; cache patch neighborhoods
set neighborhood patches in-radius vision
]
if initial-threats-density + initial-agent-density > 206 [
user-message (word
"The sum of INITIAL-THREATS-DENSITY and INITIAL-AGENT-DENSITY "
"should not be greater than 206.")
stop
]
; create threats
create-threats round (initial-threats-density * .01 * count patches) [
move-to one-of patches with [ not any? turtles-here ]
display-threats
]
; create agents
create-agents round (initial-agent-density * .01 * count patches) [
move-to one-of patches with [ not any? turtles-here ]
set heading 0
set allied-states random-float 1.0
set perceived-threat random-float 1.0
set active? false
set conflict 0
display-agent
]
; start clock and plot initial state of system
reset-ticks
end
to go
if all? turtles [ active? ] [ stop ]
move-unhappy-turtles
update-turtles
update-globals
tick
end
; unhappy turtles try a new spot
to move-unhappy-turtles
ask turtles with [ not active? ]
[ find-new-spot ]
end
; move until we find an unoccupied spot
to find-new-spot
rt random-float 360
fd random-float 10
if any? other turtles-here [ find-new-spot ] ; keep going until we find an unoccupied patch
move-to patch-here ; move to center of patch
end
to update-turtles
ask turtles [
; in next two lines, we use "neighbors" to test the eight patches
; surrounding the current patch
set allied-states count (turtles-on neighbors) with [ color = [ color ] of myself ]
set perceived-threat count (turtles-on neighbors) with [ color != [ color ] of myself ]
set total-nearby allied-states + perceived-threat
set active? allied-states >= (percent-similar * total-nearby / 100)
; add visualization here
if visualization = "old" [ set shape "default" set size 1.3 ]
if visualization = "square-x" [
ifelse active? [ set shape "square" ] [ set shape "X" ]
]
]
end
to update-globals
let similar-neighbors sum [ allied-states ] of turtles
let total-neighbors sum [ total-nearby ] of turtles
set percent-similar (similar-neighbors / total-neighbors) * 100
set percent-unhappy (count turtles with [ not active? ]) / (count turtles) * 100
; Agents engaged in conflict have the duration reduced at the end of each clock tick
ask agents [ if conflict > 0 [ set conflict conflict - 1 ] ]
; update agent display
ask agents [ display-agent ]
ask threats [ display-threats ]
; advance clock and update plots
tick
end
; AGENT AND THREAT BEHAVIOR
; move to an empty patch
to move ; turtle procedure
if movement? or breed = threats [
; move to a patch in vision; candidate patches are
; empty or contain only jailed agents
let targets neighborhood with [
not any? threats-here and all? agents-here [ conflict > 0 ]
]
if any? targets [ move-to one-of targets ]
]
end
; AGENT BEHAVIOR
to determine-behavior
set active? (burden-sharing - allied-states * estimated-conflict-probability > threshold)
end
to-report burden-sharing
report perceived-threat * (1 - alliance-protection)
end
to-report estimated-conflict-probability
let t count (threats-on neighborhood)
let a 1 + count (agents-on neighborhood) with [ active? ]
; See Info tab for a discussion of the following formula
report 1 - exp (- k * floor (t / a))
end
to alliance
if any? threats [attack]
set active? true
end
; THREAT BEHAVIOR
to attack
if any? (agents-on neighborhood) with [ active? ] [
; arrest suspect
let suspect one-of (agents-on neighborhood) with [ active? ]
move-to suspect ; move to patch of the jailed agent
ask suspect [
set active? false
set conflict random conflict-term
set color pink
]
]
end
; VISUALIZATION OF AGENTS AND COPS
to display-agent ; agent procedure
set color cyan
set shape "triangle"
end
to display-active?
set color pink
set shape "triangle"
end
to display-threats
set color red
set shape "circle 2"
end

Answer 1

The problem is that you have two breeds of turtles, agents and threats, and only agents "own" the variable active?. turtles is a superset of all breeds, so when the all? primitive tries to query the active? variable of literally all turtles, it tries to query active? for threats too, and can't find it. The line should be
if all? agents [ active? ] [ stop ]