crusoe

Generate small islands with perlin noise!

Take a look at the live demo.

Usage

npm install crusoe | yarn install crusoe

With node:

var crusoe = require('crusoe')
 
// Generate the island data
var map = crusoe.generateMap()
 
// Render island with default colors
var colors = crusoe.renderMap(map)

Use in browser by copying /lib/index.js, then:

var crusoe = window.crusoe
 
// Generate the island data
var map = crusoe.generateMap()
 
// Render island with default colors
var colors = crusoe.renderMap(map)

Documentation

crusoe exports to functions:

generateMap

Use this function to generate a random island according to specified options. Syntax: crusoe.generateMap([options]).

Returns:

{
  width: integer,
  height: integer,
  data: 2D-array
}

Island data can be accessed by using the syntax: map.data[x][y].

Options:

• width: Width of the image data. Default: 100.
• height: Height of the image data. Default: 100.
• noiseReduction: Amount of noise reduction to be applied. Default: 10.
• seed: Custom seed. Default: 0.
• size: Size of the island. Default 1.
• elevation: Island elevation above sea level. Default 3.
• lakeSize: Size of lakes on island. Default 3.
• curve: Island curve. Default: 1.

renderMap

Use this function to apply colors to the generated island. Optionally supply custom colors. Syntax: crusoe.renderMap(map[, colors]).

Returns:

{
  width: integer,
  height: integer,
  colors: 2D-array
}

Island colors can be accessed by using the syntax: rendered.colors[x][y].

Acknowledgements

Thanks to noisejs for sharing a great perlin noise library.