breeds [pike 
        large-fish 
        small-fish 
        zooplankton]

turtles-own [poison-count food age]

globals
[poison-gain
food-count
kk
kp
kl
ks
checkzp
checksf
checklf
checkpk
c]

to setup
  ca

  set-default-shape pike "pike"
  create-custom-pike starting-pike [set color black
  set poison-count 0
  set food 15
  ]

  set-default-shape large-fish "large-fish"
  create-custom-large-fish starting-large-fish [set color black
  set poison-count 0
  set food 10
  ]

  set-default-shape small-fish "small-fish"
  create-custom-small-fish starting-small-fish [set color black
  set poison-count 0
  set food 10  
  ]

  set-default-shape zooplankton "zooplankton"
  create-custom-zooplankton starting-zooplankton [set color black
  set poison-count plankton-poison
  set food 10
  ]

  ask turtles [
    setxy (random screen-size-x) (random screen-size-y)]
  ask patches[
    set pcolor 96]
    ;ask turtles[
    ;set label poison-count
    ;]  
end


 
to go
ask turtles[
  move-fish
  hunger
  waste
  reproduce
  ]
  colorscale
  checkpoison
  checkpopulation
  ;ask turtles [
  ;set label poison-count]
end


to move-fish
;set heading random 360 ; random direction for movement
;fd 1 ; self-explanatory
if breed = pike or breed = large-fish or breed = small-fish or breed = zooplankton [if poison-count < 0.0001[
set poison-count 0]]

if breed = zooplankton [
set age age + 1
if age >= 20 [die]
;set heading random 360 ; random direction for movement
;fd 1 
]

if breed = small-fish [
set age age + 1
if age >= 20 [die]
set heading random 360 ; random direction for movement
fd 1 
if food <= 20 [
if any? zooplankton in-radius 2 ; at-points [[0 0] [0 1] [1 0] [0 -1] [-1 0]] ;in-radius 2 ; asking zooplankton in surrounding 8 patches
[set food-count count zooplankton in-radius 2 ; set food-count as number of zooplankton in surrouding 8 patches
set poison-gain 0
ask zooplankton in-radius 2
[set poison-gain sum values-from zooplankton in-radius 2 [poison-count * 1.25] ; set amount of poison gained as the sum of surrounding food's 
;[set poison-gain poison-gain + poison-count
die]                                                                    ; poison-count divided by 2
set food food + food-count; resetting food-count
set poison-count poison-count + poison-gain ; / 2  
]
]
]

if breed = large-fish [
set age age + 1
if age >= 20 [die]
set heading random 360 ; random direction for movement
fd 1 
if food <= 20 [
if any? small-fish in-radius 2 ;at-points [[0 0] [0 1] [1 0] [0 -1] [-1 0]] ; in-radius 2
[set food-count count small-fish in-radius 2
set poison-gain 0
ask small-fish in-radius 2
[set poison-gain sum values-from small-fish in-radius 2 [poison-count * 1.25]
die]                                                                     
set food food + food-count
set poison-count poison-count + poison-gain ;/ 2
]
]
]

if breed = pike [
set age age + 1
if age >= 25 [die]
set heading random 360 ; random direction for movement
fd 1 
if food < 30 [
if any? large-fish in-radius 2 ;at-points [[0 0] [0 1] [1 0] [0 -1] [-1 0]] ;or any? small-fish in-radius 2
[set food-count count large-fish in-radius 2 ;small-fish in-radius 2 + 2 * (count large-fish in-radius 2)
;ask small-fish in-radius 2
;[set poison-gain sum values-from small-fish in-radius 2 [poison-count]
;die]
ask large-fish in-radius 2
[set poison-gain sum values-from large-fish in-radius 2 [poison-count * 1.25] ;poison-gain + sum values-from large-fish in-radius 2 [poison-count]
die]                                                                     
set food food + food-count
set poison-count poison-count + poison-gain ;/ 2
]
]
]
end


to hunger
   if breed = pike 
    [set food food - 1 / 2
    if food < 1 [
    die]
    ]
  
 if breed = large-fish
    [set food food - 1 / 2
    if food < 1 [
    die]
    ]

  if breed = small-fish
    [set food food - 1 / 2
    if food < 1 [
    die]
    ]
end


to waste ; fish lose poison naturally

ask pike
[if poison-count >= 22 [
if random-float 100 < 40
[set poison-count poison-count * 85 / 100
] ] ]

ask large-fish
[if poison-count >= 15 [
if random-float 100 < 30 
[set poison-count poison-count * 85 / 100
] ] ]

ask small-fish
[if poison-count >= 8 [
if random-float 100 < 40 
[set poison-count poison-count * 85 / 100
] ] ]

;if random 2 < 1 and poison-count > 1 and 
;[if age = 4.5 or age = 9 or age = 13.5 or age = 18 [
;if poison-count > 1 [
;if age = 4 or age = 8 or age = 16
;[
;if random 50 < 20
;[

;]
;]
end

to reproduce ;fish reproduce

if breed = zooplankton and age >= 3 [ ;and any? zooplankton in-radius 2 [
set kk count zooplankton
if kk <= 350
[
;if random 10 < 8 [hatch 2[
;if random 10 < 2 [die]
;set poison-count .02 * age
hatch 2[
set age 0
rt random 360 fd random 50
]]
]

if breed = small-fish and age >= 5  and age <= 13 and any? small-fish in-radius 2 and food >= 6 
[set ks count small-fish
if ks <= 200[
if random 10 < 8 [hatch 1[
if random 5 < 1 [die]
if random-float 9 < poison-count [die]
set age 0
set food 5
rt random 360 fd random 50
set poison-count poison-count / poisonlost
]]
]
]

if breed = large-fish and age >= 5 and age <= 12 and any? large-fish in-radius 2 and food >= 5 [
set kl count large-fish
if kl <= 150[
if random 10 < 7 [hatch 1[
if random 5 < 3 [die]
if random-float 14 < poison-count [die]
set age 0
set food 10
rt random 360 fd random 50
set poison-count poison-count / poisonlost
]]
]
]

if breed = pike and age >= 6 and age <= 15 and any? pike in-radius 2 and food >= 6 [
set kp count pike
if kp <= 15 [
if random 10 < 6 [hatch 1[
if random 10 < 4 [die]
if random-float 25 < poison-count [die]
set age 0
set food 10
rt random 360 fd random 50
set poison-count poison-count / poisonlost
]]
]
]
end

to checkpopulation
set checkzp count zooplankton
set checksf count small-fish
set checklf count large-fish
set checkpk count pike

if checkzp = 0
[create-custom-zooplankton starting-zooplankton[set color black set age 0 set food 10 
set poison-count plankton-poison rt random 360 fd random 50]]

if checksf = 0
[create-custom-small-fish starting-small-fish[set color black set age 0 set food 10 
set poison-count 0 rt random 360 fd random 50]]

if checklf = 0
[create-custom-large-fish starting-large-fish[set color black set age 0 set food 10 
set poison-count 0 rt random 360 fd random 50]]

if checkpk = 0
[create-custom-pike starting-pike[set color black set age 0 set food 10 
set poison-count 0 rt random 360 fd random 50]]
;]]
end


to colorscale
  set c 3
  while [c = 3]
      [
        set c random 12 + 1
      ]
     set c c * 10 + 5
     ;ask patches [set pcolor c]
end 

to checkpoison
ask turtles [if breed != zooplankton[ set color scale-color green poison-count 0 25 ]]
end
@#$#@#$#@
GRAPHICS-WINDOW
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621
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14
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CC-WINDOW
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596
Command Center

BUTTON
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setup
setup
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OBSERVER
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BUTTON
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go
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BUTTON
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@#$#@#$#@
WHAT IS IT?
-----------
This section could give a general understanding of what the model is trying to show or explain.


HOW IT WORKS
------------
This section could explain what rules the agents use to create the overall behavior of the model.


HOW TO USE IT
-------------
This section could explain how to use the model, including a description of each of the items in the interface tab.


THINGS TO NOTICE
----------------
This section could give some ideas of things for the user to notice while running the model.


THINGS TO TRY
-------------
This section could give some ideas of things for the user to try to do (move sliders, switches, etc.) with the model.


EXTENDING THE MODEL
-------------------
This section could give some ideas of things to add or change in the procedures tab to make the model more complicated, detailed, accurate, etc.


NETLOGO FEATURES
----------------
This section could point out any especially interesting or unusual features of NetLogo that the model makes use of, particularly in the Procedures tab.  It might also point out places where workarounds were needed because of missing features.


RELATED MODELS
--------------
This section could give the names of models in the NetLogo Models Library or elsewhere which are of related interest.


CREDITS AND REFERENCES
----------------------
This section could contain a reference to the model's URL on the web if it has one, as well as any other necessary credits or references.
@#$#@#$#@
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@#$#@#$#@
NetLogo 2.0.1
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@