to go

  ask up-to-n-of 100 patches [ set food food + 1 ]

  ask turtles

  [

    right -15 + random-float 30

    forward 1

    set energy energy - 0.1

    set energy energy - 0.1

    if random-float 100 <= 10

    [

      if energy >= 1 [

        set energy energy / (1 + 1)

        hatch 1

      ]

    ]

    if food > 0

    [

      set energy energy + min (list food 1)

      set food food - min (list food 1)

    ]

    if energy <= 0

    [

      die

    ]

  ]

  tick

  render-patches

end

​

to setup

  clear-all

  reset-ticks

  create-turtles 50

  [

    setxy random-xcor random-ycor

    set energy energy + 5 + random-float 1 * (10 - 5)

  set color red set size 2 rt 180 ]

  ask up-to-n-of 100 patches [ set food food + 1 ]

  render-patches

end