Camas-human-elk model

breed [humans human]
breed [camas camass]
breed [elk elks]
camas-own [age]
humans-own [age]
elk-own [age]

To Setup
clear-all
  create-humans number-of-humans [
    set age age + 1
    set shape "person"
    set color  35
    set size 1.5
    move-to one-of patches
  ]

  create-elk number-of-elk [
  set age age + 1
    set shape "elk"
   set color 33
    set size 1.5
   move-to one-of patches
  ]

  create-camas number-of-camas [
   set age age + 0.5
    set shape "camas"
    set size 1.5
   set color 53
   move-to one-of patches
  ]



  ask patches [
    set pcolor 57]

reset-ticks
end 

to go

  if not any? camas [ stop]
  ask humans [
    set age age + 1
    right random 10
    left random 10
    forward 1
    if random-float 150 < human-reproduction [
      hatch-humans 1 [
        set age 0
        set color 35
        move-to one-of neighbors]
    ]


    if age > 80 [die]
    if any? camas-here [
      if random-float 100 < human-harvest [
        ask camas-here
        [die]
      ]
    ]

    if any? elk-here [
       if random-float 100 < human-hunt [
      ask elk-here [die]
    ]
   ]
  ]


  ask elk [
    set age age + 1
    right random 10
    left random 10
    forward 1
    if random-float 100 < elk-reproduction [
      hatch-elk 1 [
        set age 0
        set color 33
        move-to one-of neighbors]
    ]
    if age > 13 [die]
    if any? camas-here [
      ask camas-here [die]
    ]
  ]

  ask camas [
  set age age + 0.5
    if age > 5 [die]
    if random-float 100 < camas-reproduction [
    hatch-camas 1 [
      set color 53
        set age 0
        move-to one-of neighbors]
    ]
  ]
  tick
end