A library for simple generation of noisemaps and maps of objects in Rust.
The full documentation can be found here.
To use this library, simply add the following line to your Cargo.toml dependencies section:
worldgen = "0.5.2"
To start generating a world, we need a source of noise. The noise
module contains different noise generators, for example for perlin noise:
let noise = PerlinNoise::new();We can generate a single value from a generator using its generate
method, as follows:
// x, y, seed
let value = noise.generate(1.0, 1.0, 15);This on its own is not very useful or convenient, however by plugging this
into a NoiseMap (from the noisemap module) we can generate a field of
continuous noise:
let nm = NoiseMap::new(noise)
.set(Size::of(10, 10))
.set(Step::of(0.05, 0.05));
let vec = nm.generate_chunk(0, 0);These can be combined and scaled to your liking:
let nm = nm1 + nm2 * 5;Finally, we can wrap this into a World, and produce a vector of specific
tiles (represented by anything you want) based on given constraints:
let world = World::new(nm)
.add(Tile::new('~').when(Constraint::LT(0.0)))
.add(Tile::new(','));
let tiles = world.generate(0, 0);For more information on each of the three components, look at the documentation of each relevent module.
use worldgen::noise::perlin::PerlinNoise;
use worldgen::noisemap::{NoiseMapGenerator, NoiseMapGeneratorBase, NoiseMap, Seed, Step, Size};
use worldgen::world::{World, Tile};
use worldgen::world::tile::{Constraint, ConstraintType};
fn main() {
let noise = PerlinNoise::new();
let nm1 = NoiseMap::new(noise)
.set(Seed::of("Hello?"))
.set(Step::of(0.005, 0.005));
let nm2 = NoiseMap::new(noise)
.set(Seed::of("Hello!"))
.set(Step::of(0.05, 0.05));
let nm = Box::new(nm1 + nm2 * 3);
let world = World::new()
.set(Size::of(80, 50))
// Water
.add(Tile::new('~')
.when(constraint!(nm.clone(), < -0.1)))
// Grass
.add(Tile::new(',')
.when(constraint!(nm.clone(), < 0.45)))
// Mountains
.add(Tile::new('^')
.when(constraint!(nm.clone(), > 0.8)))
// Hills
.add(Tile::new('n'));
for row in world.generate(0, 0).iter() {
for val in row.iter() {
for c in val.iter() {
print!("{}", c);
}
println!("");
}
println!("");
}
}
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