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https://github.com/Azgaar/Fantasy-Map-Generator.git
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make depressions resolve elevation change not that big
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Azgaar
parent
ab065da5d2
commit
67235bc41e
8 changed files with 1765 additions and 1264 deletions
166
modules/lakes.js
166
modules/lakes.js
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@ -1,90 +1,110 @@
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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typeof define === 'function' && define.amd ? define(factory) :
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(global.Lakes = factory());
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}(this, (function () {'use strict';
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typeof exports === "object" && typeof module !== "undefined" ? (module.exports = factory()) : typeof define === "function" && define.amd ? define(factory) : (global.Lakes = factory());
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})(this, function () {
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"use strict";
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const setClimateData = function(h) {
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const cells = pack.cells;
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const lakeOutCells = new Uint16Array(cells.i.length);
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const setClimateData = function (h) {
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const cells = pack.cells;
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const lakeOutCells = new Uint16Array(cells.i.length);
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pack.features.forEach(f => {
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if (f.type !== "lake") return;
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pack.features.forEach(f => {
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if (f.type !== "lake") return;
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// default flux: sum of precipition around lake first cell
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f.flux = rn(d3.sum(f.shoreline.map(c => grid.cells.prec[cells.g[c]])) / 2);
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// temperature and evaporation to detect closed lakes
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f.temp = f.cells < 6 ? grid.cells.temp[cells.g[f.firstCell]] : rn(d3.mean(f.shoreline.map(c => grid.cells.temp[cells.g[c]])), 1);
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const height = (f.height - 18) ** heightExponentInput.value; // height in meters
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const evaporation = (700 * (f.temp + .006 * height) / 50 + 75) / (80 - f.temp); // based on Penman formula, [1-11]
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f.evaporation = rn(evaporation * f.cells);
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// default flux: sum of precipition around lake first cell
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f.flux = rn(d3.sum(f.shoreline.map(c => grid.cells.prec[cells.g[c]])) / 2);
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// lake outlet cell
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f.outCell = f.shoreline[d3.scan(f.shoreline, (a,b) => h[a] - h[b])];
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lakeOutCells[f.outCell] = f.i;
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});
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// temperature and evaporation to detect closed lakes
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f.temp = f.cells < 6 ? grid.cells.temp[cells.g[f.firstCell]] : rn(d3.mean(f.shoreline.map(c => grid.cells.temp[cells.g[c]])), 1);
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const height = (f.height - 18) ** heightExponentInput.value; // height in meters
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const evaporation = ((700 * (f.temp + 0.006 * height)) / 50 + 75) / (80 - f.temp); // based on Penman formula, [1-11]
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f.evaporation = rn(evaporation * f.cells);
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return lakeOutCells;
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}
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// no outlet for lakes in depressed areas
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if (f.closed) return;
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const cleanupLakeData = function() {
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for (const feature of pack.features) {
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if (feature.type !== "lake") continue;
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delete feature.river;
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delete feature.enteringFlux;
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delete feature.shoreline;
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delete feature.outCell;
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feature.height = rn(feature.height);
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// lake outlet cell
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f.outCell = f.shoreline[d3.scan(f.shoreline, (a, b) => h[a] - h[b])];
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lakeOutCells[f.outCell] = f.i;
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});
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const inlets = feature.inlets?.filter(r => pack.rivers.find(river => river.i === r));
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if (!inlets || !inlets.length) delete feature.inlets;
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else feature.inlets = inlets;
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return lakeOutCells;
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};
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const outlet = feature.outlet && pack.rivers.find(river => river.i === feature.outlet);
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if (!outlet) delete feature.outlet;
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}
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}
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// get array of land cells aroound lake
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const getShoreline = function (lake) {
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const queue = [lake.firstCell];
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const used = [queue[0]];
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const landCellsAround = [];
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while (queue.length) {
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const q = queue.pop();
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for (const c of pack.cells.c[q]) {
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if (used[c]) continue;
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used[c] = true;
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if (pack.cells.f[c] === lake.i) queue.push(c);
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if (pack.cells.h[c] >= 20) landCellsAround.push(c);
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}
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}
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const defineGroup = function() {
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for (const feature of pack.features) {
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if (feature.type !== "lake") continue;
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const lakeEl = lakes.select(`[data-f="${feature.i}"]`).node();
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if (!lakeEl) continue;
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lake.shoreline = landCellsAround;
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};
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feature.group = getGroup(feature);
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document.getElementById(feature.group).appendChild(lakeEl);
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}
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}
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const cleanupLakeData = function () {
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for (const feature of pack.features) {
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if (feature.type !== "lake") continue;
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delete feature.river;
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delete feature.enteringFlux;
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delete feature.shoreline;
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delete feature.outCell;
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delete feature.closed;
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feature.height = rn(feature.height);
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const generateName = function() {
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Math.random = aleaPRNG(seed);
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for (const feature of pack.features) {
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if (feature.type !== "lake") continue;
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feature.name = getName(feature);
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}
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}
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const inlets = feature.inlets?.filter(r => pack.rivers.find(river => river.i === r));
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if (!inlets || !inlets.length) delete feature.inlets;
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else feature.inlets = inlets;
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const getName = function(feature) {
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const landCell = pack.cells.c[feature.firstCell].find(c => pack.cells.h[c] >= 20);
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const culture = pack.cells.culture[landCell];
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return Names.getCulture(culture);
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}
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const outlet = feature.outlet && pack.rivers.find(river => river.i === feature.outlet);
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if (!outlet) delete feature.outlet;
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}
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};
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function getGroup(feature) {
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if (feature.temp < -3) return "frozen";
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if (feature.height > 60 && feature.cells < 10 && feature.firstCell % 5 === 0) return "lava";
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const defineGroup = function () {
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for (const feature of pack.features) {
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if (feature.type !== "lake") continue;
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const lakeEl = lakes.select(`[data-f="${feature.i}"]`).node();
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if (!lakeEl) continue;
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if (!feature.inlets && !feature.outlet) {
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if (feature.evaporation / 2 > feature.flux) return "dry";
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if (feature.cells < 3 && feature.firstCell % 5 === 0) return "sinkhole";
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feature.group = getGroup(feature);
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document.getElementById(feature.group).appendChild(lakeEl);
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}
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};
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const generateName = function () {
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Math.random = aleaPRNG(seed);
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for (const feature of pack.features) {
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if (feature.type !== "lake") continue;
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feature.name = getName(feature);
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}
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};
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const getName = function (feature) {
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const landCell = pack.cells.c[feature.firstCell].find(c => pack.cells.h[c] >= 20);
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const culture = pack.cells.culture[landCell];
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return Names.getCulture(culture);
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};
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function getGroup(feature) {
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if (feature.temp < -3) return "frozen";
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if (feature.height > 60 && feature.cells < 10 && feature.firstCell % 5 === 0) return "lava";
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if (!feature.inlets && !feature.outlet) {
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if (feature.evaporation / 2 > feature.flux) return "dry";
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if (feature.cells < 3 && feature.firstCell % 5 === 0) return "sinkhole";
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}
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if (!feature.outlet && feature.evaporation > feature.flux) return "salt";
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return "freshwater";
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}
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if (!feature.outlet && feature.evaporation > feature.flux) return "salt";
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return "freshwater";
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}
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return {setClimateData, cleanupLakeData, defineGroup, generateName, getName};
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})));
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return {setClimateData, cleanupLakeData, defineGroup, generateName, getName, getShoreline};
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});
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