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import { aWeather, paWeather, pyWeather, hWeather } from "./stores";
const WEATHER = {
FAIR: 0,
SHOWERS: 1,
GALES: 2,
BLIZZARDS: 3,
HEAT: 4,
THUNDER: 5,
GLOOM: 6,
SNOW: 7,
FOG: 8,
UMBRAL_WIND: 9,
};
// Anemos: 30/Fair, 30/Gales, 30/Showers, 10/Snowy
const ANEMOS_WEATHER = [
[WEATHER.FAIR, 30],
[WEATHER.GALES, 30],
[WEATHER.SHOWERS, 30],
[WEATHER.SNOW, 10],
];
// Pagos: 10/Fair, 18/Fog, 18/Heat, 18/Snow, 18/Thunder, 18/Blizzards
const PAGOS_WEATHER = [
[WEATHER.FAIR, 10],
[WEATHER.FOG, 18],
[WEATHER.HEAT, 18],
[WEATHER.SNOW, 18],
[WEATHER.THUNDER, 18],
[WEATHER.BLIZZARDS, 18],
];
// Pyros: 10/Fair, 18/Heat, 18/Thunder, 18/Blizzards, 18/Umbral Wind, 18/Snow
const PYROS_WEATHER = [
[WEATHER.FAIR, 10],
[WEATHER.HEAT, 18],
[WEATHER.THUNDER, 18],
[WEATHER.BLIZZARDS, 18],
[WEATHER.UMBRAL_WIND, 18],
[WEATHER.SNOW, 18],
];
// Hydatos: 12/Fair, 22/Showers, 22/Gloom, 22/Thunder, 22/Snow
const HYDATOS_WEATHER = [
[WEATHER.FAIR, 12],
[WEATHER.SHOWERS, 22],
[WEATHER.GLOOM, 22],
[WEATHER.THUNDER, 22],
[WEATHER.SNOW, 22],
];
function getWeatherName(weather) {
switch (weather) {
case 0:
return "Fair";
case 1:
return "Showers";
case 2:
return "Gales";
case 3:
return "Blizzards";
case 4:
return "Heat";
case 5:
return "Thunder";
case 6:
return "Gloom";
case 7:
return "Snow";
case 8:
return "Fog";
case 9:
return "Umbral Wind";
default:
return "Unknown";
}
}
function getSeed(date = new Date()) {
return Math.floor(date.getTime() / 1400000);
}
function hash(seed = getSeed()) {
const base = Math.floor(seed / 3) * 100 + ((seed + 1) % 3) * 8;
const step1 = ((base << 11) ^ base) >>> 0;
const step2 = ((step1 >>> 8) ^ step1) >>> 0;
return step2 % 100;
}
function hashSeq(seed = getSeed(), count = 10) {
const hashes = [];
for (let i = 0; i < count; ++i) {
hashes.push(hash(seed + i));
}
return hashes;
}
function getWeather(rates, hash = hashSeed()) {
let total = 0;
for (const [weather, chance] of rates) {
if ((total += chance) > hash) {
return weather;
}
}
return WEATHER.FAIR;
}
function forecast(rates, seed = getSeed(), count = 10) {
const res = [];
let prevHash = hash(seed - 1);
let prevWeather = getWeather(rates, prevHash);
for (let i = 0; res.length < count && i < 100000; ++i) {
const currHash = hash(seed);
const currWeather = getWeather(rates, currHash);
res.push({
prevWeather,
currWeather,
weatherName: getWeatherName(currWeather),
seed,
date: new Date(seed * 1400000),
});
prevHash = currHash;
prevWeather = currWeather;
++seed;
}
return res;
}
export default {
WEATHER,
ANEMOS_WEATHER,
PAGOS_WEATHER,
PYROS_WEATHER,
HYDATOS_WEATHER,
getWeather,
forecast,
getWeatherName,
};
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