Biome generation library

let new_world = new world({
	width: 64,			/* world width, in hexes */
	height: 32,			/* world height, in hexes */
	erosion: 0.54,			/* world erosion */
	seed_moisture: 6893		/* Load a specific random seed */
	seed_elevation: 736		/* Load a specific random seed */
});

<div class="worldmap"></div>

/* draw to a SVG image with 0.5 terrain opacity,  all other parameters are optional */
new_world.draw('.worldmap', {
	mode: 'svg',			/* map mode, SVG or HTML5 canvas */
	opacity: 0.5,			/* terrain opacity */
	hex_size: 24,			/* size of a single hex */
	show_grid: true,		/* whether to display the hex grid */
	show_terrain: true,		/* whether to display the advanced terrain features */
	assets_url: './'		/* Path to load the terrain assets PNGs from */
});

/* draw to a HTML5 canvas with 0.4 terrain opacity */
new_world.draw('.worldmap', {
	mode: 'canvas',
	opacity: 0.4
});

/* draw to a HTML5 canvas with default options */
new_world.draw('.worldmap', {
	mode: 'canvas'
});

let properties = new_world.props();

/* will result in */

{
	width: 64,
	height: 32,
	erosion: 0.54,
	seeds: {
		elevation: 736,
		moisture: 6893
	}
}

/* export JSON serialized data */
let exported_data = new_world.export_json();

/* export raw Array object */
let exported_data = new_world.export();

let world_data = new_world.data();
let properties = new_world.props();
for (let y = 0; y < properties.height; y++) {
	for (let x = 0; x < properties.width; x++) {
		console.log(world_data[y][x].e);
	}
}

let terrains = new_world.terrains();

/* will result in */

terrains['grass'].color = '#E6F59A';

/* and you can get the color of a hex too: */
let terrain = new_world.get_hex_terrain({
	x: 12,
	y: 26
});
let terrains = new_world.terrains();
let hex_color = terrains[terrain].color;

/* if terrain = 'mountains', hex_color will be: */

hex_color = '#B37D1A';

let is_water = new_world.hex_is_water({
	x: 12,
	y: 26
});

/* will result in */

is_water = false;

let terrain = new_world.get_hex_terrain({
	x: 12,
	y: 26
});

/* will result in */

terrain = 'mountains';

let elevation = new_world.get_hex_elevation({
	x: 2,
	y: 4
});

/* will result in */

elevation = 0.7391983661686046;

let moisture = new_world.get_hex_moisture({
	x: 10,
	y: 11
});

/* will result in */

moisture = 0.4925356581346529;

let hex = new_world.get_random_hex_with_terrain('grass');

/* will result in */

hex = {
	x: 10,
	y: 22
}

let hex_data = new_world.get_hex({
	x: 4,
	y: 2
});

/* will result in */

hex_data = {
	e: 0.7391983661686046,
	m: 0.6185405664699859
}

let stats = new_world.stats();

/* will result in */

stats = { ocean: 0, grass: 2086, subtropical_desert: 11, temperate_desert: 12, taiga: 0, ... }

let new_moisture = new_world.raise_hex_moisture({
	x: 10,
	y: 11
}, 0.12);

/* will result in */

new_moisture = 0.4925356581346529 + 0.12;

/* if you want to lower the moisture, use the lower_hex_moisture() method */

let new_elevation = new_world.lower_hex_elevation({
	x: 10,
	y: 11
}, 0.87);

/* will result in */

new_elevation = 0.7391983661686046 - 0.87;

/* if you want to raise the elevation, use the raise_hex_elevation() method */

new_world.set_hex(hex, 'city', {
	name: 'Alexandria',
	population: 130000
});

let world_data = [
	[
		{
			"e": 0.7578606610586678,
			"m": 0.5642837814565862
		}, {
			"e": 0.7902203979081555,
			"m": 0.6573637811637490
		}
	]
];

new_world.data(world_data);

This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>.