pony-diamond-square

Tiny library implementing the diamond-square heightmap generation algorithm.

Installation

Include this library in your project config:

{
  "type": "github",
  "repo": "adri326/pony-diamond-square"
}

Or add it with stable add github adri326/pony-diamond-square

Then include it in your code:

use "diamond-square"

Run stable fetch and compile with stable env ponyc.

Usage

This repository contains one (public) actor, DiamondSquare and a type, DSResult, which aliases Array[Array[F64] val] val. You shall create it with the parameters you want to give it, then run its apply behavior with as argument a promise:

use "diamond-square"

// -- snip --

let promise = Promise[DSResult]
promise.next[None](recover iso FulfillClass end)
DiamondSquare(width, height, weight_array_as_f64, (noise_seed_a, noise_seed_b), multiplier)(promise)

Notes

This is a slightly modified version of the diamond-square algorithm, which lets you run it on arbitrarily-sized maps, instead of the fixed 2^n + 1 square that the original implementation needs.

The output is not bound, ie. even with a multiplier of 1, you might get values above 1. Consider using a sigmoid function to address that.