Terrain Generation

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Miles Ohly (Author)

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;;NOTE: ADD WATER LEVEL SLIDER AND ADJUST RECOLOR ACCORDINGLY

patches-own[
  elevation
]

to setup
  clear-all


  ask patches with [pzcor = 0] [
    sprout 1]
  ask turtles [
    set shape "circle"
    set color 5
    set size .2
  ]
end 

to generate

   ask patches [
    set elevation -1 * amplitude + random (2 * amplitude)]
  repeat smoothness [diffuse elevation 1]
  if biome = "desert" [
    repeat 15 [diffuse elevation 1]]


  ask turtles [
    set zcor elevation]

  ask turtles [
    recolor
  ]
end 

to recolor
  if biome = "tropics"[
    set color 99
    if zcor < 6 [set color 5]
    if zcor < 3.5 [set color 55]
    if zcor < waterLevel [set color 105]
    if (zcor < (waterLevel + .5) and zcor > waterLevel) [set color 44]
  ]
  if biome = "Boreal forest" [
    set color 99
    if zcor < 1 [
      let tree? (random 2)
      if tree? < 1 [
        set color 53]]
    if zcor < waterLevel [
      set color 87]
  ]
  if biome = "desert" [
    set color 44
    set zcor elevation
  ]
  if biome = "temperate forest" [
    set color 99
    if zcor < 6 [
      set color 4]
    if zcor < 3.5 [
      let tree_type (random 2)
      ifelse tree_type < 1 [
        set color 53][set color 55]]
    if zcor < waterLevel [
      set color 105]
  ]
  if color = 105 [
    let z zcor
    let x xcor
    let y ycor
    ask patches with [pzcor = waterLevel and pxcor = x and pycor = y] [
      sprout 1 [
        set shape "circle"
        set color 105
        set size .2
      ]
    ]
  ]
  if color = 87 [
    let z zcor
    let x xcor
    let y ycor
    ask patches with [pzcor = waterLevel and pxcor = x and pycor = y] [
      sprout 1 [
        set shape "circle"
        set color 87
        set size .2
      ]
    ]
  ]
end

There is only one version of this model, created 18 days ago by Miles Ohly.

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