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refactor: Biomes.define - partial

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max 2022-07-24 19:22:14 +03:00
parent bb78d5168b
commit 21234dc414
7 changed files with 72 additions and 59 deletions
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58
src/modules/biomes.js
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@ -1,8 +1,8 @@
import * as d3 from "d3";
import {TIME} from "config/logging";
import {isLand} from "utils/graphUtils";
import {rn} from "utils/numberUtils";
import {MIN_LAND_HEIGHT} from "config/generation";
window.Biomes = (function () {
const getDefault = () => {
@ -78,40 +78,40 @@ window.Biomes = (function () {
return {i: d3.range(0, name.length), name, color, biomesMartix, habitability, iconsDensity, icons, cost};
};
// assign biome id for each cell
function define({temp, prec, flux, riverIds, heights, neighbors, gridReference}) {
TIME && console.time("defineBiomes");
const biome = new Uint8Array(heights.length); // biomes array
for (let cellId = 0; cellId < heights.length; cellId++) {
const temperature = temp[gridReference[cellId]];
const height = heights[cellId];
const moisture = height < MIN_LAND_HEIGHT ? 0 : calculateMoisture(cellId);
biome[cellId] = getId(moisture, temperature, height);
}
function calculateMoisture(cellId) {
let moist = prec[gridReference[cellId]];
if (riverIds[cellId]) moist += Math.max(flux[cellId] / 20, 2);
const moistAround = neighbors[cellId]
.filter(neibCellId => heights[neibCellId] >= MIN_LAND_HEIGHT)
.map(c => prec[gridReference[c]])
.concat([moist]);
return rn(4 + d3.mean(moistAround));
}
TIME && console.timeEnd("defineBiomes");
return biome;
}
function isWetLand(moisture, temperature, height) {
if (moisture > 40 && temperature > -2 && height < 25) return true; //near coast
if (moisture > 24 && temperature > -2 && height > 24 && height < 60) return true; //off coast
return false;
}
// assign biome id for each cell
function define(pack, grid) {
TIME && console.time("defineBiomes");
const {cells} = pack;
const {temp, prec} = grid.cells;
cells.biome = new Uint8Array(cells.i.length); // biomes array
for (const i of cells.i) {
const temperature = temp[cells.g[i]];
const height = cells.h[i];
const moisture = height < 20 ? 0 : calculateMoisture(i);
cells.biome[i] = getId(moisture, temperature, height);
}
function calculateMoisture(i) {
let moist = prec[cells.g[i]];
if (cells.r[i]) moist += Math.max(cells.fl[i] / 20, 2);
const n = cells.c[i]
.filter(isLand)
.map(c => prec[cells.g[c]])
.concat([moist]);
return rn(4 + d3.mean(n));
}
TIME && console.timeEnd("defineBiomes");
}
// assign biome id to a cell
function getId(moisture, temperature, height) {
if (height < 20) return 0; // marine biome: all water cells