66 lines
2.3 KiB
JavaScript
66 lines
2.3 KiB
JavaScript
const fs = require('fs');
|
|
const Planet = require('./planet');
|
|
const PRNG = require('./prng');
|
|
const Star = require('./star');
|
|
const MersenneTwister = require('./twister');
|
|
const utils = require('./utils');
|
|
const data = require('./data.json');
|
|
|
|
var names = [];
|
|
var stars = [];
|
|
var planets = [];
|
|
|
|
function generate() {
|
|
var spiral_arms = 2, spiral_angle_degrees = 360, min_radius = 0.05, max_radius = 0.9, thickness = 0.1, scatter_theta = Math.PI / spiral_arms * 0.2, scatter_radius = min_radius * 0.4, spiral_b = spiral_angle_degrees / Math.PI * min_radius / max_radius, start = (new Date()).getTime(), names = [], rejects = {
|
|
badwords: 0,
|
|
duplicates: 0
|
|
}, totalCount = 1000, i, position;
|
|
|
|
pseudoRandom = new PRNG('96aa48');
|
|
|
|
for (i = 0; i < totalCount; i++) {
|
|
var number_of_syllables = Math.floor(pseudoRandom.value() * 2 + 2), new_name;
|
|
while (true) {
|
|
new_name = utils.random_name(pseudoRandom, number_of_syllables);
|
|
if (names.indexOf(new_name) >= 0) {
|
|
rejects.duplicates++;
|
|
} else if (data.badwords.indexOf(new_name) >= 0 || data.badwords.indexContains(new_name) >= 0) {
|
|
rejects.badwords++
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
names.push(new_name);
|
|
var r = pseudoRandom.realRange(min_radius, max_radius);
|
|
var theta = spiral_b * Math.log(r / max_radius) + pseudoRandom.gaussrandom(scatter_theta);
|
|
r += pseudoRandom.gaussrandom(scatter_radius);
|
|
// assign to a spiral arm
|
|
theta += pseudoRandom.range(0, spiral_arms - 1) * Math.PI * 2 / spiral_arms;
|
|
position = {
|
|
x: Math.cos(theta) * r * 100,
|
|
y: Math.sin(theta) * r * 100,
|
|
z: pseudoRandom.gaussrandom(thickness * 0.5)
|
|
};
|
|
stars.push(new Star(new_name,pseudoRandom.range(1, 100000),position));
|
|
}
|
|
stars.sort(function(a, b) {
|
|
return a.name > b.name ? 1 : (a.name < b.name ? -1 : 0);
|
|
});
|
|
|
|
let temp = stars.pop()
|
|
|
|
Object.assign(temp, temp.description());
|
|
|
|
for (star of stars) {
|
|
Object.assign(star, star.description());
|
|
}
|
|
|
|
fs.writeFileSync(__dirname + '/galaxy.json', JSON.stringify(stars, null, 2))
|
|
|
|
|
|
console.log('names rejected', rejects);
|
|
console.log('generate elapsed', (((new Date()).getTime() - start) * 0.001).toFixed(3) + "s");
|
|
}
|
|
|
|
generate();
|