108 lines
4 KiB
JavaScript
108 lines
4 KiB
JavaScript
const PRNG = require('./prng');
|
|
const utils = require('./utils');
|
|
|
|
function Planet(name, seed, orbitalRadius, insolation, hasStation) {
|
|
var pseudoRandom = new PRNG(seed),
|
|
template = pseudoRandom.pick(planetTypes, [insolation * 100, 10, 1]);
|
|
|
|
this.name = name;
|
|
this.seed = seed;
|
|
this.orbitalRadius = orbitalRadius * 10;
|
|
this.insolation = insolation;
|
|
this.blackbodyK = utils.blackbody(this.insolation);
|
|
this.temperature = this.blackbodyK - 273.15;
|
|
this.classification = template.classification;
|
|
this.radius = pseudoRandom.range(template.radius[0], template.radius[1]) / 2200;
|
|
this.density = pseudoRandom.realRange(template.density[0], template.density[1]);
|
|
this.gravity = utils.gravity(this.radius, this.density);
|
|
this.hydrographics = template.hydrographics(pseudoRandom, this.insolation, this.radius, this.density);
|
|
this.atmosphere = template.atmosphere(pseudoRandom, this.insolation, this.radius, this.density, this.hydrographics);
|
|
this.HI = template.HI(this.insolation, this.radius, this.density, this.hydrographics, this.atmosphere);
|
|
this.habitable = this.HI == 2 && this.temperature > -60 && this.temperature < 60;
|
|
if (pseudoRandom.value() > .9) this.water = {
|
|
color: this.generateWaterColor(this.temperature, pseudoRandom)
|
|
}
|
|
|
|
this.color = this.generateColor(this.temperature, this.water, pseudoRandom);
|
|
|
|
|
|
return this;
|
|
}
|
|
|
|
Planet.prototype.generateStation = function (prng) {
|
|
return {
|
|
size: prng.pick(['small', 'big', 'epic'], [498, 499, 8]),
|
|
economy: prng.pick(['mining', 'agricultural', 'tech', 'industrial', 'residential'], [15, 30, 15, 10, 30])
|
|
|
|
}
|
|
}
|
|
|
|
Planet.prototype.generateColor = function (temperature, water, prng) {
|
|
if (temperature < 0 && water) {
|
|
var color = Math.floor(prng.value() * 100) + 155;
|
|
return [color, color, color];
|
|
}
|
|
else {
|
|
return [Math.floor(prng.value() * 100) + 125, Math.floor(prng.value() * 100) + 125, Math.floor(prng.value() * 100) + 125];
|
|
}
|
|
}
|
|
|
|
Planet.prototype.generateWaterColor = function (temperature, prng) {
|
|
if (temperature > 100) return false;
|
|
else {
|
|
return [Math.floor(prng.value() * 60) + 50, Math.floor(prng.value() * 60) + 50, Math.floor(prng.value() * 200) + 55]
|
|
}
|
|
}
|
|
|
|
var planetTypes = [
|
|
{
|
|
classification: "rocky",
|
|
radius: [1000, 15000],
|
|
density: [2, 8],
|
|
hydrographics: function(prng, insolation, radius, density) {
|
|
var g = utils.gravity(radius, density),
|
|
tempK = utils.blackbody(insolation, 0);
|
|
return Math.clamp(prng.realRange(-50, 150 - Math.abs(tempK - 270)) * g - Math.abs(density - 5.5) * 10, 0, 100);
|
|
},
|
|
atmosphere: function(prng, insolation, radius, density, hydrographics) {
|
|
var g = utils.gravity(radius, density);
|
|
if (hydrographics > 0 && insolation > 0.25 && insolation < 2) {
|
|
return prng.pick(['Breathable', 'Filterable', 'Inert', 'Toxic', 'Corrosive', 'Trace'], [1, 2, 2, 1, 1, 1]);
|
|
} else {
|
|
return prng.pick(['Breathable', 'Filterable', 'Inert', 'Toxic', 'Corrosive', 'Trace'], [1, 2, 3, 4, 5, 5]);
|
|
}
|
|
},
|
|
HI: function(insolation, radius, density, hydrographics, atmosphere) {
|
|
var g = utils.gravity(radius, density),
|
|
tempK = utils.blackbody(insolation, 0);
|
|
if (atmosphere === "Breathable" && hydrographics > 0 && g < 1.25 && tempK > 230 && tempK < 280) {
|
|
return 1;
|
|
} else if ((atmosphere === "Breathable" || atmosphere === 'Filterable') && g < 2 && tempK > 200 && tempK < 310) {
|
|
return 2;
|
|
} else if (atmosphere === "Corrosive" || g > 2 || tempK > 400) {
|
|
return tempK > 1000 ? 5 : 4;
|
|
} else {
|
|
return 3;
|
|
}
|
|
}
|
|
},
|
|
{
|
|
classification: "gas giant",
|
|
radius: [15000, 120000],
|
|
density: [0.6, 2.0],
|
|
hydrographics: utils.fixed_value(0),
|
|
atmosphere: utils.fixed_value("Crushing"),
|
|
HI: utils.fixed_value(4)
|
|
},
|
|
{
|
|
classification: "brown dwarf",
|
|
radius: [120000, 250000],
|
|
density: [0.6, 2.0],
|
|
hydrographics: utils.fixed_value(0),
|
|
atmosphere: utils.fixed_value("Crushing"),
|
|
HI: utils.fixed_value(5)
|
|
}];
|
|
|
|
|
|
module.exports = Planet;
|