mirror of
https://github.com/Azgaar/Fantasy-Map-Generator.git
synced 2026-02-04 17:41:23 +01:00
Refactor/migrate first modules (#1273)
* chore: add npm + vite for progressive enhancement * fix: update Dockerfile to copy only the dist folder contents * fix: update Dockerfile to use multi-stage build for optimized production image * fix: correct nginx config file copy command in Dockerfile * chore: add netlify configuration for build and redirects * fix: add NODE_VERSION to environment in Netlify configuration * remove wrong dist folder * Update package.json Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * chore: split public and src * migrating all util files from js to ts * feat: Implement HeightmapGenerator and Voronoi module - Added HeightmapGenerator class for generating heightmaps with various tools (Hill, Pit, Range, Trough, Strait, etc.). - Introduced Voronoi class for creating Voronoi diagrams using Delaunator. - Updated index.html to include new modules. - Created index.ts to manage module imports. - Enhanced arrayUtils and graphUtils with type definitions and improved functionality. - Added utility functions for generating grids and calculating Voronoi cells. * chore: add GitHub Actions workflow for deploying to GitHub Pages * fix: update branch name in GitHub Actions workflow from 'main' to 'master' * chore: update package.json to specify Node.js engine version and remove unused launch.json * Initial plan * Update copilot guidelines to reflect NPM/Vite/TypeScript migration Co-authored-by: Azgaar <26469650+Azgaar@users.noreply.github.com> * Update src/modules/heightmap-generator.ts Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update src/utils/graphUtils.ts Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update src/modules/heightmap-generator.ts Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * feat: Add TIME and ERROR variables to global scope in HeightmapGenerator * fix: Update base path in vite.config.ts for Netlify deployment * refactor: Migrate features to a new module and remove legacy script reference * refactor: Update feature interfaces and improve type safety in FeatureModule * refactor: Add documentation for markupPack and defineGroups methods in FeatureModule * refactor: Remove legacy ocean-layers.js and migrate functionality to ocean-layers.ts * refactor: Remove river-generator.js script reference and migrate river generation logic to river-generator.ts * refactor: Remove river-generator.js reference and add biomes module * refactor: Migrate lakes functionality to lakes.ts and update related interfaces * refactor: clean up global variable declarations and improve type definitions * refactor: update shoreline calculation and improve type imports in PackedGraph * fix: e2e tests --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> Co-authored-by: Azgaar <maxganiev@yandex.com> Co-authored-by: Azgaar <azgaar.fmg@yandex.com> Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: Azgaar <26469650+Azgaar@users.noreply.github.com>
This commit is contained in:
Marc Emmanuel
GitHub
parent
9903f0b9aa
commit
29bc2832e0
15 changed files with 826 additions and 677 deletions
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@ -1,128 +0,0 @@
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"use strict";
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window.Biomes = (function () {
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const MIN_LAND_HEIGHT = 20;
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const getDefault = () => {
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const name = [
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"Marine",
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"Hot desert",
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"Cold desert",
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"Savanna",
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"Grassland",
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"Tropical seasonal forest",
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"Temperate deciduous forest",
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"Tropical rainforest",
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"Temperate rainforest",
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"Taiga",
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"Tundra",
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"Glacier",
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"Wetland"
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];
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const color = [
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"#466eab",
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"#fbe79f",
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"#b5b887",
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"#d2d082",
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"#c8d68f",
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"#b6d95d",
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"#29bc56",
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"#7dcb35",
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"#409c43",
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"#4b6b32",
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"#96784b",
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"#d5e7eb",
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"#0b9131"
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];
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const habitability = [0, 4, 10, 22, 30, 50, 100, 80, 90, 12, 4, 0, 12];
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const iconsDensity = [0, 3, 2, 120, 120, 120, 120, 150, 150, 100, 5, 0, 250];
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const icons = [
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{},
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{dune: 3, cactus: 6, deadTree: 1},
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{dune: 9, deadTree: 1},
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{acacia: 1, grass: 9},
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{grass: 1},
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{acacia: 8, palm: 1},
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{deciduous: 1},
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{acacia: 5, palm: 3, deciduous: 1, swamp: 1},
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{deciduous: 6, swamp: 1},
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{conifer: 1},
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{grass: 1},
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{},
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{swamp: 1}
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];
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const cost = [10, 200, 150, 60, 50, 70, 70, 80, 90, 200, 1000, 5000, 150]; // biome movement cost
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const biomesMartix = [
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// hot ↔ cold [>19°C; <-4°C]; dry ↕ wet
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new Uint8Array([1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 10]),
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new Uint8Array([3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 9, 9, 9, 9, 10, 10, 10]),
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new Uint8Array([5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 9, 9, 9, 9, 9, 10, 10, 10]),
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new Uint8Array([5, 6, 6, 6, 6, 6, 6, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10]),
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new Uint8Array([7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 10, 10])
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];
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// parse icons weighted array into a simple array
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for (let i = 0; i < icons.length; i++) {
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const parsed = [];
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for (const icon in icons[i]) {
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for (let j = 0; j < icons[i][icon]; j++) {
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parsed.push(icon);
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}
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}
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icons[i] = parsed;
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}
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return {i: d3.range(0, name.length), name, color, biomesMartix, habitability, iconsDensity, icons, cost};
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};
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// assign biome id for each cell
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function define() {
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TIME && console.time("defineBiomes");
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const {fl: flux, r: riverIds, h: heights, c: neighbors, g: gridReference} = pack.cells;
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const {temp, prec} = grid.cells;
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pack.cells.biome = new Uint8Array(pack.cells.i.length); // biomes array
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for (let cellId = 0; cellId < heights.length; cellId++) {
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const height = heights[cellId];
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const moisture = height < MIN_LAND_HEIGHT ? 0 : calculateMoisture(cellId);
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const temperature = temp[gridReference[cellId]];
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pack.cells.biome[cellId] = getId(moisture, temperature, height, Boolean(riverIds[cellId]));
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}
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function calculateMoisture(cellId) {
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let moisture = prec[gridReference[cellId]];
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if (riverIds[cellId]) moisture += Math.max(flux[cellId] / 10, 2);
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const moistAround = neighbors[cellId]
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.filter(neibCellId => heights[neibCellId] >= MIN_LAND_HEIGHT)
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.map(c => prec[gridReference[c]])
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.concat([moisture]);
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return rn(4 + d3.mean(moistAround));
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}
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TIME && console.timeEnd("defineBiomes");
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}
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function getId(moisture, temperature, height, hasRiver) {
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if (height < 20) return 0; // all water cells: marine biome
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if (temperature < -5) return 11; // too cold: permafrost biome
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if (temperature >= 25 && !hasRiver && moisture < 8) return 1; // too hot and dry: hot desert biome
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if (isWetland(moisture, temperature, height)) return 12; // too wet: wetland biome
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// in other cases use biome matrix
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const moistureBand = Math.min((moisture / 5) | 0, 4); // [0-4]
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const temperatureBand = Math.min(Math.max(20 - temperature, 0), 25); // [0-25]
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return biomesData.biomesMartix[moistureBand][temperatureBand];
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}
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function isWetland(moisture, temperature, height) {
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if (temperature <= -2) return false; // too cold
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if (moisture > 40 && height < 25) return true; // near coast
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if (moisture > 24 && height > 24 && height < 60) return true; // off coast
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return false;
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}
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return {getDefault, define, getId};
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})();
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@ -1,267 +0,0 @@
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"use strict";
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window.Features = (function () {
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const DEEPER_LAND = 3;
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const LANDLOCKED = 2;
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const LAND_COAST = 1;
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const UNMARKED = 0;
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const WATER_COAST = -1;
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const DEEP_WATER = -2;
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// calculate distance to coast for every cell
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function markup({distanceField, neighbors, start, increment, limit = INT8_MAX}) {
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for (let distance = start, marked = Infinity; marked > 0 && distance !== limit; distance += increment) {
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marked = 0;
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const prevDistance = distance - increment;
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for (let cellId = 0; cellId < neighbors.length; cellId++) {
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if (distanceField[cellId] !== prevDistance) continue;
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for (const neighborId of neighbors[cellId]) {
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if (distanceField[neighborId] !== UNMARKED) continue;
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distanceField[neighborId] = distance;
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marked++;
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}
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}
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}
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}
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// mark Grid features (ocean, lakes, islands) and calculate distance field
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function markupGrid() {
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TIME && console.time("markupGrid");
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Math.random = aleaPRNG(seed); // get the same result on heightmap edit in Erase mode
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const {h: heights, c: neighbors, b: borderCells, i} = grid.cells;
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const cellsNumber = i.length;
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const distanceField = new Int8Array(cellsNumber); // gird.cells.t
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const featureIds = new Uint16Array(cellsNumber); // gird.cells.f
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const features = [0];
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const queue = [0];
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for (let featureId = 1; queue[0] !== -1; featureId++) {
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const firstCell = queue[0];
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featureIds[firstCell] = featureId;
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const land = heights[firstCell] >= 20;
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let border = false; // set true if feature touches map edge
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while (queue.length) {
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const cellId = queue.pop();
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if (!border && borderCells[cellId]) border = true;
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for (const neighborId of neighbors[cellId]) {
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const isNeibLand = heights[neighborId] >= 20;
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if (land === isNeibLand && featureIds[neighborId] === UNMARKED) {
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featureIds[neighborId] = featureId;
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queue.push(neighborId);
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} else if (land && !isNeibLand) {
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distanceField[cellId] = LAND_COAST;
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distanceField[neighborId] = WATER_COAST;
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}
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}
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}
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const type = land ? "island" : border ? "ocean" : "lake";
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features.push({i: featureId, land, border, type});
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queue[0] = featureIds.findIndex(f => f === UNMARKED); // find unmarked cell
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}
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// markup deep ocean cells
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markup({distanceField, neighbors, start: DEEP_WATER, increment: -1, limit: -10});
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grid.cells.t = distanceField;
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grid.cells.f = featureIds;
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grid.features = features;
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TIME && console.timeEnd("markupGrid");
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}
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// mark Pack features (ocean, lakes, islands), calculate distance field and add properties
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function markupPack() {
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TIME && console.time("markupPack");
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const {cells, vertices} = pack;
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const {c: neighbors, b: borderCells, i} = cells;
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const packCellsNumber = i.length;
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if (!packCellsNumber) return; // no cells -> there is nothing to do
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const distanceField = new Int8Array(packCellsNumber); // pack.cells.t
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const featureIds = new Uint16Array(packCellsNumber); // pack.cells.f
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const haven = createTypedArray({maxValue: packCellsNumber, length: packCellsNumber}); // haven: opposite water cell
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const harbor = new Uint8Array(packCellsNumber); // harbor: number of adjacent water cells
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const features = [0];
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const queue = [0];
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for (let featureId = 1; queue[0] !== -1; featureId++) {
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const firstCell = queue[0];
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featureIds[firstCell] = featureId;
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const land = isLand(firstCell);
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let border = Boolean(borderCells[firstCell]); // true if feature touches map border
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let totalCells = 1; // count cells in a feature
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while (queue.length) {
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const cellId = queue.pop();
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if (borderCells[cellId]) border = true;
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if (!border && borderCells[cellId]) border = true;
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for (const neighborId of neighbors[cellId]) {
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const isNeibLand = isLand(neighborId);
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if (land && !isNeibLand) {
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distanceField[cellId] = LAND_COAST;
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distanceField[neighborId] = WATER_COAST;
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if (!haven[cellId]) defineHaven(cellId);
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} else if (land && isNeibLand) {
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if (distanceField[neighborId] === UNMARKED && distanceField[cellId] === LAND_COAST)
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distanceField[neighborId] = LANDLOCKED;
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else if (distanceField[cellId] === UNMARKED && distanceField[neighborId] === LAND_COAST)
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distanceField[cellId] = LANDLOCKED;
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}
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if (!featureIds[neighborId] && land === isNeibLand) {
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queue.push(neighborId);
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featureIds[neighborId] = featureId;
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totalCells++;
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}
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}
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}
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features.push(addFeature({firstCell, land, border, featureId, totalCells}));
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queue[0] = featureIds.findIndex(f => f === UNMARKED); // find unmarked cell
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}
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markup({distanceField, neighbors, start: DEEPER_LAND, increment: 1}); // markup pack land
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markup({distanceField, neighbors, start: DEEP_WATER, increment: -1, limit: -10}); // markup pack water
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pack.cells.t = distanceField;
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pack.cells.f = featureIds;
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pack.cells.haven = haven;
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pack.cells.harbor = harbor;
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pack.features = features;
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TIME && console.timeEnd("markupPack");
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function defineHaven(cellId) {
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const waterCells = neighbors[cellId].filter(isWater);
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const distances = waterCells.map(neibCellId => dist2(cells.p[cellId], cells.p[neibCellId]));
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const closest = distances.indexOf(Math.min.apply(Math, distances));
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haven[cellId] = waterCells[closest];
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harbor[cellId] = waterCells.length;
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}
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function addFeature({firstCell, land, border, featureId, totalCells}) {
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const type = land ? "island" : border ? "ocean" : "lake";
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const [startCell, featureVertices] = getCellsData(type, firstCell);
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const points = clipPoly(featureVertices.map(vertex => vertices.p[vertex]));
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const area = d3.polygonArea(points); // feature perimiter area
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const absArea = Math.abs(rn(area));
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const feature = {
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i: featureId,
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type,
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land,
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border,
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cells: totalCells,
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firstCell: startCell,
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vertices: featureVertices,
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area: absArea
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};
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if (type === "lake") {
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if (area > 0) feature.vertices = feature.vertices.reverse();
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feature.shoreline = unique(feature.vertices.map(vertex => vertices.c[vertex].filter(isLand)).flat());
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feature.height = Lakes.getHeight(feature);
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}
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return feature;
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function getCellsData(featureType, firstCell) {
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if (featureType === "ocean") return [firstCell, []];
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const getType = cellId => featureIds[cellId];
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const type = getType(firstCell);
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const ofSameType = cellId => getType(cellId) === type;
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const ofDifferentType = cellId => getType(cellId) !== type;
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const startCell = findOnBorderCell(firstCell);
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const featureVertices = getFeatureVertices(startCell);
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return [startCell, featureVertices];
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function findOnBorderCell(firstCell) {
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const isOnBorder = cellId => borderCells[cellId] || neighbors[cellId].some(ofDifferentType);
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if (isOnBorder(firstCell)) return firstCell;
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const startCell = cells.i.filter(ofSameType).find(isOnBorder);
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if (startCell === undefined)
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throw new Error(`Markup: firstCell ${firstCell} is not on the feature or map border`);
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return startCell;
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}
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function getFeatureVertices(startCell) {
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const startingVertex = cells.v[startCell].find(v => vertices.c[v].some(ofDifferentType));
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if (startingVertex === undefined)
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throw new Error(`Markup: startingVertex for cell ${startCell} is not found`);
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return connectVertices({vertices, startingVertex, ofSameType, closeRing: false});
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}
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}
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}
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}
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// add properties to pack features
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function defineGroups() {
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const gridCellsNumber = grid.cells.i.length;
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const OCEAN_MIN_SIZE = gridCellsNumber / 25;
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const SEA_MIN_SIZE = gridCellsNumber / 1000;
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const CONTINENT_MIN_SIZE = gridCellsNumber / 10;
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const ISLAND_MIN_SIZE = gridCellsNumber / 1000;
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for (const feature of pack.features) {
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if (!feature || feature.type === "ocean") continue;
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if (feature.type === "lake") feature.height = Lakes.getHeight(feature);
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feature.group = defineGroup(feature);
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}
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function defineGroup(feature) {
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if (feature.type === "island") return defineIslandGroup(feature);
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if (feature.type === "ocean") return defineOceanGroup();
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if (feature.type === "lake") return defineLakeGroup(feature);
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throw new Error(`Markup: unknown feature type ${feature.type}`);
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}
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function defineOceanGroup(feature) {
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if (feature.cells > OCEAN_MIN_SIZE) return "ocean";
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if (feature.cells > SEA_MIN_SIZE) return "sea";
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return "gulf";
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}
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function defineIslandGroup(feature) {
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const prevFeature = pack.features[pack.cells.f[feature.firstCell - 1]];
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if (prevFeature && prevFeature.type === "lake") return "lake_island";
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if (feature.cells > CONTINENT_MIN_SIZE) return "continent";
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if (feature.cells > ISLAND_MIN_SIZE) return "island";
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return "isle";
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}
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function defineLakeGroup(feature) {
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if (feature.temp < -3) return "frozen";
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if (feature.height > 60 && feature.cells < 10 && feature.firstCell % 10 === 0) return "lava";
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if (!feature.inlets && !feature.outlet) {
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if (feature.evaporation > feature.flux * 4) return "dry";
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if (feature.cells < 3 && feature.firstCell % 10 === 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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}
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||||
|
||||
return {markupGrid, markupPack, defineGroups};
|
||||
})();
|
||||
|
|
@ -1,123 +0,0 @@
|
|||
"use strict";
|
||||
|
||||
window.Lakes = (function () {
|
||||
const LAKE_ELEVATION_DELTA = 0.1;
|
||||
|
||||
// check if lake can be potentially open (not in deep depression)
|
||||
const detectCloseLakes = h => {
|
||||
const {cells} = pack;
|
||||
const ELEVATION_LIMIT = +byId("lakeElevationLimitOutput").value;
|
||||
|
||||
pack.features.forEach(feature => {
|
||||
if (feature.type !== "lake") return;
|
||||
delete feature.closed;
|
||||
|
||||
const MAX_ELEVATION = feature.height + ELEVATION_LIMIT;
|
||||
if (MAX_ELEVATION > 99) {
|
||||
feature.closed = false;
|
||||
return;
|
||||
}
|
||||
|
||||
let isDeep = true;
|
||||
const lowestShorelineCell = feature.shoreline.sort((a, b) => h[a] - h[b])[0];
|
||||
const queue = [lowestShorelineCell];
|
||||
const checked = [];
|
||||
checked[lowestShorelineCell] = true;
|
||||
|
||||
while (queue.length && isDeep) {
|
||||
const cellId = queue.pop();
|
||||
|
||||
for (const neibCellId of cells.c[cellId]) {
|
||||
if (checked[neibCellId]) continue;
|
||||
if (h[neibCellId] >= MAX_ELEVATION) continue;
|
||||
|
||||
if (h[neibCellId] < 20) {
|
||||
const nFeature = pack.features[cells.f[neibCellId]];
|
||||
if (nFeature.type === "ocean" || feature.height > nFeature.height) isDeep = false;
|
||||
}
|
||||
|
||||
checked[neibCellId] = true;
|
||||
queue.push(neibCellId);
|
||||
}
|
||||
}
|
||||
|
||||
feature.closed = isDeep;
|
||||
});
|
||||
};
|
||||
|
||||
const defineClimateData = function (heights) {
|
||||
const {cells, features} = pack;
|
||||
const lakeOutCells = new Uint16Array(cells.i.length);
|
||||
|
||||
features.forEach(feature => {
|
||||
if (feature.type !== "lake") return;
|
||||
feature.flux = getFlux(feature);
|
||||
feature.temp = getLakeTemp(feature);
|
||||
feature.evaporation = getLakeEvaporation(feature);
|
||||
if (feature.closed) return; // no outlet for lakes in depressed areas
|
||||
|
||||
feature.outCell = getLowestShoreCell(feature);
|
||||
lakeOutCells[feature.outCell] = feature.i;
|
||||
});
|
||||
|
||||
return lakeOutCells;
|
||||
|
||||
function getFlux(lake) {
|
||||
return lake.shoreline.reduce((acc, c) => acc + grid.cells.prec[cells.g[c]], 0);
|
||||
}
|
||||
|
||||
function getLakeTemp(lake) {
|
||||
if (lake.cells < 6) return grid.cells.temp[cells.g[lake.firstCell]];
|
||||
return rn(d3.mean(lake.shoreline.map(c => grid.cells.temp[cells.g[c]])), 1);
|
||||
}
|
||||
|
||||
function getLakeEvaporation(lake) {
|
||||
const height = (lake.height - 18) ** heightExponentInput.value; // height in meters
|
||||
const evaporation = ((700 * (lake.temp + 0.006 * height)) / 50 + 75) / (80 - lake.temp); // based on Penman formula, [1-11]
|
||||
return rn(evaporation * lake.cells);
|
||||
}
|
||||
|
||||
function getLowestShoreCell(lake) {
|
||||
return lake.shoreline.sort((a, b) => heights[a] - heights[b])[0];
|
||||
}
|
||||
};
|
||||
|
||||
const cleanupLakeData = function () {
|
||||
for (const feature of pack.features) {
|
||||
if (feature.type !== "lake") continue;
|
||||
delete feature.river;
|
||||
delete feature.enteringFlux;
|
||||
delete feature.outCell;
|
||||
delete feature.closed;
|
||||
feature.height = rn(feature.height, 3);
|
||||
|
||||
const inlets = feature.inlets?.filter(r => pack.rivers.find(river => river.i === r));
|
||||
if (!inlets || !inlets.length) delete feature.inlets;
|
||||
else feature.inlets = inlets;
|
||||
|
||||
const outlet = feature.outlet && pack.rivers.find(river => river.i === feature.outlet);
|
||||
if (!outlet) delete feature.outlet;
|
||||
}
|
||||
};
|
||||
|
||||
const getHeight = function (feature) {
|
||||
const heights = pack.cells.h;
|
||||
const minShoreHeight = d3.min(feature.shoreline.map(cellId => heights[cellId])) || 20;
|
||||
return rn(minShoreHeight - LAKE_ELEVATION_DELTA, 2);
|
||||
};
|
||||
|
||||
const defineNames = function () {
|
||||
pack.features.forEach(feature => {
|
||||
if (feature.type !== "lake") return;
|
||||
feature.name = getName(feature);
|
||||
});
|
||||
};
|
||||
|
||||
const getName = function (feature) {
|
||||
const landCell = feature.shoreline[0];
|
||||
const culture = pack.cells.culture[landCell];
|
||||
return Names.getCulture(culture);
|
||||
};
|
||||
|
||||
return {defineClimateData, cleanupLakeData, detectCloseLakes, getHeight, defineNames, getName};
|
||||
})();
|
||||
|
|
@ -1,92 +0,0 @@
|
|||
"use strict";
|
||||
|
||||
window.OceanLayers = (function () {
|
||||
let cells, vertices, pointsN, used;
|
||||
|
||||
const OceanLayers = function OceanLayers() {
|
||||
const outline = oceanLayers.attr("layers");
|
||||
if (outline === "none") return;
|
||||
TIME && console.time("drawOceanLayers");
|
||||
|
||||
lineGen.curve(d3.curveBasisClosed);
|
||||
(cells = grid.cells), (pointsN = grid.cells.i.length), (vertices = grid.vertices);
|
||||
const limits = outline === "random" ? randomizeOutline() : outline.split(",").map(s => +s);
|
||||
|
||||
const chains = [];
|
||||
const opacity = rn(0.4 / limits.length, 2);
|
||||
used = new Uint8Array(pointsN); // to detect already passed cells
|
||||
|
||||
for (const i of cells.i) {
|
||||
const t = cells.t[i];
|
||||
if (t > 0) continue;
|
||||
if (used[i] || !limits.includes(t)) continue;
|
||||
const start = findStart(i, t);
|
||||
if (!start) continue;
|
||||
used[i] = 1;
|
||||
const chain = connectVertices(start, t); // vertices chain to form a path
|
||||
if (chain.length < 4) continue;
|
||||
const relax = 1 + t * -2; // select only n-th point
|
||||
const relaxed = chain.filter((v, i) => !(i % relax) || vertices.c[v].some(c => c >= pointsN));
|
||||
if (relaxed.length < 4) continue;
|
||||
const points = clipPoly(
|
||||
relaxed.map(v => vertices.p[v]),
|
||||
1
|
||||
);
|
||||
chains.push([t, points]);
|
||||
}
|
||||
|
||||
for (const t of limits) {
|
||||
const layer = chains.filter(c => c[0] === t);
|
||||
let path = layer.map(c => round(lineGen(c[1]))).join("");
|
||||
if (path) oceanLayers.append("path").attr("d", path).attr("fill", "#ecf2f9").attr("fill-opacity", opacity);
|
||||
}
|
||||
|
||||
// find eligible cell vertex to start path detection
|
||||
function findStart(i, t) {
|
||||
if (cells.b[i]) return cells.v[i].find(v => vertices.c[v].some(c => c >= pointsN)); // map border cell
|
||||
return cells.v[i][cells.c[i].findIndex(c => cells.t[c] < t || !cells.t[c])];
|
||||
}
|
||||
|
||||
TIME && console.timeEnd("drawOceanLayers");
|
||||
};
|
||||
|
||||
function randomizeOutline() {
|
||||
const limits = [];
|
||||
let odd = 0.2;
|
||||
for (let l = -9; l < 0; l++) {
|
||||
if (P(odd)) {
|
||||
odd = 0.2;
|
||||
limits.push(l);
|
||||
} else {
|
||||
odd *= 2;
|
||||
}
|
||||
}
|
||||
return limits;
|
||||
}
|
||||
|
||||
// connect vertices to chain
|
||||
function connectVertices(start, t) {
|
||||
const chain = []; // vertices chain to form a path
|
||||
for (let i = 0, current = start; i === 0 || (current !== start && i < 10000); i++) {
|
||||
const prev = chain[chain.length - 1]; // previous vertex in chain
|
||||
chain.push(current); // add current vertex to sequence
|
||||
const c = vertices.c[current]; // cells adjacent to vertex
|
||||
c.filter(c => cells.t[c] === t).forEach(c => (used[c] = 1));
|
||||
const v = vertices.v[current]; // neighboring vertices
|
||||
const c0 = !cells.t[c[0]] || cells.t[c[0]] === t - 1;
|
||||
const c1 = !cells.t[c[1]] || cells.t[c[1]] === t - 1;
|
||||
const c2 = !cells.t[c[2]] || cells.t[c[2]] === t - 1;
|
||||
if (v[0] !== undefined && v[0] !== prev && c0 !== c1) current = v[0];
|
||||
else if (v[1] !== undefined && v[1] !== prev && c1 !== c2) current = v[1];
|
||||
else if (v[2] !== undefined && v[2] !== prev && c0 !== c2) current = v[2];
|
||||
if (current === chain[chain.length - 1]) {
|
||||
ERROR && console.error("Next vertex is not found");
|
||||
break;
|
||||
}
|
||||
}
|
||||
chain.push(chain[0]); // push first vertex as the last one
|
||||
return chain;
|
||||
}
|
||||
|
||||
return OceanLayers;
|
||||
})();
|
||||
|
|
@ -1,520 +0,0 @@
|
|||
"use strict";
|
||||
|
||||
window.Rivers = (function () {
|
||||
const generate = function (allowErosion = true) {
|
||||
TIME && console.time("generateRivers");
|
||||
Math.random = aleaPRNG(seed);
|
||||
const {cells, features} = pack;
|
||||
|
||||
const riversData = {}; // rivers data
|
||||
const riverParents = {};
|
||||
|
||||
const addCellToRiver = function (cell, river) {
|
||||
if (!riversData[river]) riversData[river] = [cell];
|
||||
else riversData[river].push(cell);
|
||||
};
|
||||
|
||||
cells.fl = new Uint16Array(cells.i.length); // water flux array
|
||||
cells.r = new Uint16Array(cells.i.length); // rivers array
|
||||
cells.conf = new Uint8Array(cells.i.length); // confluences array
|
||||
let riverNext = 1; // first river id is 1
|
||||
|
||||
const h = alterHeights();
|
||||
Lakes.detectCloseLakes(h);
|
||||
resolveDepressions(h);
|
||||
drainWater();
|
||||
defineRivers();
|
||||
|
||||
calculateConfluenceFlux();
|
||||
Lakes.cleanupLakeData();
|
||||
|
||||
if (allowErosion) {
|
||||
cells.h = Uint8Array.from(h); // apply gradient
|
||||
downcutRivers(); // downcut river beds
|
||||
}
|
||||
|
||||
TIME && console.timeEnd("generateRivers");
|
||||
|
||||
function drainWater() {
|
||||
const MIN_FLUX_TO_FORM_RIVER = 30;
|
||||
const cellsNumberModifier = (pointsInput.dataset.cells / 10000) ** 0.25;
|
||||
|
||||
const prec = grid.cells.prec;
|
||||
const land = cells.i.filter(i => h[i] >= 20).sort((a, b) => h[b] - h[a]);
|
||||
const lakeOutCells = Lakes.defineClimateData(h);
|
||||
|
||||
land.forEach(function (i) {
|
||||
cells.fl[i] += prec[cells.g[i]] / cellsNumberModifier; // add flux from precipitation
|
||||
|
||||
// create lake outlet if lake is not in deep depression and flux > evaporation
|
||||
const lakes = lakeOutCells[i]
|
||||
? features.filter(feature => i === feature.outCell && feature.flux > feature.evaporation)
|
||||
: [];
|
||||
for (const lake of lakes) {
|
||||
const lakeCell = cells.c[i].find(c => h[c] < 20 && cells.f[c] === lake.i);
|
||||
cells.fl[lakeCell] += Math.max(lake.flux - lake.evaporation, 0); // not evaporated lake water drains to outlet
|
||||
|
||||
// allow chain lakes to retain identity
|
||||
if (cells.r[lakeCell] !== lake.river) {
|
||||
const sameRiver = cells.c[lakeCell].some(c => cells.r[c] === lake.river);
|
||||
|
||||
if (sameRiver) {
|
||||
cells.r[lakeCell] = lake.river;
|
||||
addCellToRiver(lakeCell, lake.river);
|
||||
} else {
|
||||
cells.r[lakeCell] = riverNext;
|
||||
addCellToRiver(lakeCell, riverNext);
|
||||
riverNext++;
|
||||
}
|
||||
}
|
||||
|
||||
lake.outlet = cells.r[lakeCell];
|
||||
flowDown(i, cells.fl[lakeCell], lake.outlet);
|
||||
}
|
||||
|
||||
// assign all tributary rivers to outlet basin
|
||||
const outlet = lakes[0]?.outlet;
|
||||
for (const lake of lakes) {
|
||||
if (!Array.isArray(lake.inlets)) continue;
|
||||
for (const inlet of lake.inlets) {
|
||||
riverParents[inlet] = outlet;
|
||||
}
|
||||
}
|
||||
|
||||
// near-border cell: pour water out of the screen
|
||||
if (cells.b[i] && cells.r[i]) return addCellToRiver(-1, cells.r[i]);
|
||||
|
||||
// downhill cell (make sure it's not in the source lake)
|
||||
let min = null;
|
||||
if (lakeOutCells[i]) {
|
||||
const filtered = cells.c[i].filter(c => !lakes.map(lake => lake.i).includes(cells.f[c]));
|
||||
min = filtered.sort((a, b) => h[a] - h[b])[0];
|
||||
} else if (cells.haven[i]) {
|
||||
min = cells.haven[i];
|
||||
} else {
|
||||
min = cells.c[i].sort((a, b) => h[a] - h[b])[0];
|
||||
}
|
||||
|
||||
// cells is depressed
|
||||
if (h[i] <= h[min]) return;
|
||||
|
||||
// debug
|
||||
// .append("line")
|
||||
// .attr("x1", pack.cells.p[i][0])
|
||||
// .attr("y1", pack.cells.p[i][1])
|
||||
// .attr("x2", pack.cells.p[min][0])
|
||||
// .attr("y2", pack.cells.p[min][1])
|
||||
// .attr("stroke", "#333")
|
||||
// .attr("stroke-width", 0.2);
|
||||
|
||||
if (cells.fl[i] < MIN_FLUX_TO_FORM_RIVER) {
|
||||
// flux is too small to operate as a river
|
||||
if (h[min] >= 20) cells.fl[min] += cells.fl[i];
|
||||
return;
|
||||
}
|
||||
|
||||
// proclaim a new river
|
||||
if (!cells.r[i]) {
|
||||
cells.r[i] = riverNext;
|
||||
addCellToRiver(i, riverNext);
|
||||
riverNext++;
|
||||
}
|
||||
|
||||
flowDown(min, cells.fl[i], cells.r[i]);
|
||||
});
|
||||
}
|
||||
|
||||
function flowDown(toCell, fromFlux, river) {
|
||||
const toFlux = cells.fl[toCell] - cells.conf[toCell];
|
||||
const toRiver = cells.r[toCell];
|
||||
|
||||
if (toRiver) {
|
||||
// downhill cell already has river assigned
|
||||
if (fromFlux > toFlux) {
|
||||
cells.conf[toCell] += cells.fl[toCell]; // mark confluence
|
||||
if (h[toCell] >= 20) riverParents[toRiver] = river; // min river is a tributary of current river
|
||||
cells.r[toCell] = river; // re-assign river if downhill part has less flux
|
||||
} else {
|
||||
cells.conf[toCell] += fromFlux; // mark confluence
|
||||
if (h[toCell] >= 20) riverParents[river] = toRiver; // current river is a tributary of min river
|
||||
}
|
||||
} else cells.r[toCell] = river; // assign the river to the downhill cell
|
||||
|
||||
if (h[toCell] < 20) {
|
||||
// pour water to the water body
|
||||
const waterBody = features[cells.f[toCell]];
|
||||
if (waterBody.type === "lake") {
|
||||
if (!waterBody.river || fromFlux > waterBody.enteringFlux) {
|
||||
waterBody.river = river;
|
||||
waterBody.enteringFlux = fromFlux;
|
||||
}
|
||||
waterBody.flux = waterBody.flux + fromFlux;
|
||||
if (!waterBody.inlets) waterBody.inlets = [river];
|
||||
else waterBody.inlets.push(river);
|
||||
}
|
||||
} else {
|
||||
// propagate flux and add next river segment
|
||||
cells.fl[toCell] += fromFlux;
|
||||
}
|
||||
|
||||
addCellToRiver(toCell, river);
|
||||
}
|
||||
|
||||
function defineRivers() {
|
||||
// re-initialize rivers and confluence arrays
|
||||
cells.r = new Uint16Array(cells.i.length);
|
||||
cells.conf = new Uint16Array(cells.i.length);
|
||||
pack.rivers = [];
|
||||
|
||||
const defaultWidthFactor = rn(1 / (pointsInput.dataset.cells / 10000) ** 0.25, 2);
|
||||
const mainStemWidthFactor = defaultWidthFactor * 1.2;
|
||||
|
||||
for (const key in riversData) {
|
||||
const riverCells = riversData[key];
|
||||
if (riverCells.length < 3) continue; // exclude tiny rivers
|
||||
|
||||
const riverId = +key;
|
||||
for (const cell of riverCells) {
|
||||
if (cell < 0 || cells.h[cell] < 20) continue;
|
||||
|
||||
// mark real confluences and assign river to cells
|
||||
if (cells.r[cell]) cells.conf[cell] = 1;
|
||||
else cells.r[cell] = riverId;
|
||||
}
|
||||
|
||||
const source = riverCells[0];
|
||||
const mouth = riverCells[riverCells.length - 2];
|
||||
const parent = riverParents[key] || 0;
|
||||
|
||||
const widthFactor = !parent || parent === riverId ? mainStemWidthFactor : defaultWidthFactor;
|
||||
const meanderedPoints = addMeandering(riverCells);
|
||||
const discharge = cells.fl[mouth]; // m3 in second
|
||||
const length = getApproximateLength(meanderedPoints);
|
||||
const sourceWidth = getSourceWidth(cells.fl[source]);
|
||||
const width = getWidth(
|
||||
getOffset({
|
||||
flux: discharge,
|
||||
pointIndex: meanderedPoints.length,
|
||||
widthFactor,
|
||||
startingWidth: sourceWidth
|
||||
})
|
||||
);
|
||||
|
||||
pack.rivers.push({
|
||||
i: riverId,
|
||||
source,
|
||||
mouth,
|
||||
discharge,
|
||||
length,
|
||||
width,
|
||||
widthFactor,
|
||||
sourceWidth,
|
||||
parent,
|
||||
cells: riverCells
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
function downcutRivers() {
|
||||
const MAX_DOWNCUT = 5;
|
||||
|
||||
for (const i of pack.cells.i) {
|
||||
if (cells.h[i] < 35) continue; // don't donwcut lowlands
|
||||
if (!cells.fl[i]) continue;
|
||||
|
||||
const higherCells = cells.c[i].filter(c => cells.h[c] > cells.h[i]);
|
||||
const higherFlux = higherCells.reduce((acc, c) => acc + cells.fl[c], 0) / higherCells.length;
|
||||
if (!higherFlux) continue;
|
||||
|
||||
const downcut = Math.floor(cells.fl[i] / higherFlux);
|
||||
if (downcut) cells.h[i] -= Math.min(downcut, MAX_DOWNCUT);
|
||||
}
|
||||
}
|
||||
|
||||
function calculateConfluenceFlux() {
|
||||
for (const i of cells.i) {
|
||||
if (!cells.conf[i]) continue;
|
||||
|
||||
const sortedInflux = cells.c[i]
|
||||
.filter(c => cells.r[c] && h[c] > h[i])
|
||||
.map(c => cells.fl[c])
|
||||
.sort((a, b) => b - a);
|
||||
cells.conf[i] = sortedInflux.reduce((acc, flux, index) => (index ? acc + flux : acc), 0);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
// add distance to water value to land cells to make map less depressed
|
||||
const alterHeights = () => {
|
||||
const {h, c, t} = pack.cells;
|
||||
return Array.from(h).map((h, i) => {
|
||||
if (h < 20 || t[i] < 1) return h;
|
||||
return h + t[i] / 100 + d3.mean(c[i].map(c => t[c])) / 10000;
|
||||
});
|
||||
};
|
||||
|
||||
// depression filling algorithm (for a correct water flux modeling)
|
||||
const resolveDepressions = function (h) {
|
||||
const {cells, features} = pack;
|
||||
const maxIterations = +document.getElementById("resolveDepressionsStepsOutput").value;
|
||||
const checkLakeMaxIteration = maxIterations * 0.85;
|
||||
const elevateLakeMaxIteration = maxIterations * 0.75;
|
||||
|
||||
const height = i => features[cells.f[i]].height || h[i]; // height of lake or specific cell
|
||||
|
||||
const lakes = features.filter(f => f.type === "lake");
|
||||
const land = cells.i.filter(i => h[i] >= 20 && !cells.b[i]); // exclude near-border cells
|
||||
land.sort((a, b) => h[a] - h[b]); // lowest cells go first
|
||||
|
||||
const progress = [];
|
||||
let depressions = Infinity;
|
||||
let prevDepressions = null;
|
||||
for (let iteration = 0; depressions && iteration < maxIterations; iteration++) {
|
||||
if (progress.length > 5 && d3.sum(progress) > 0) {
|
||||
// bad progress, abort and set heights back
|
||||
h = alterHeights();
|
||||
depressions = progress[0];
|
||||
break;
|
||||
}
|
||||
|
||||
depressions = 0;
|
||||
|
||||
if (iteration < checkLakeMaxIteration) {
|
||||
for (const l of lakes) {
|
||||
if (l.closed) continue;
|
||||
const minHeight = d3.min(l.shoreline.map(s => h[s]));
|
||||
if (minHeight >= 100 || l.height > minHeight) continue;
|
||||
|
||||
if (iteration > elevateLakeMaxIteration) {
|
||||
l.shoreline.forEach(i => (h[i] = cells.h[i]));
|
||||
l.height = d3.min(l.shoreline.map(s => h[s])) - 1;
|
||||
l.closed = true;
|
||||
continue;
|
||||
}
|
||||
|
||||
depressions++;
|
||||
l.height = minHeight + 0.2;
|
||||
}
|
||||
}
|
||||
|
||||
for (const i of land) {
|
||||
const minHeight = d3.min(cells.c[i].map(c => height(c)));
|
||||
if (minHeight >= 100 || h[i] > minHeight) continue;
|
||||
|
||||
depressions++;
|
||||
h[i] = minHeight + 0.1;
|
||||
}
|
||||
|
||||
prevDepressions !== null && progress.push(depressions - prevDepressions);
|
||||
prevDepressions = depressions;
|
||||
}
|
||||
|
||||
depressions && WARN && console.warn(`Unresolved depressions: ${depressions}. Edit heightmap to fix`);
|
||||
};
|
||||
|
||||
// add points at 1/3 and 2/3 of a line between adjacents river cells
|
||||
const addMeandering = function (riverCells, riverPoints = null, meandering = 0.5) {
|
||||
const {fl, h} = pack.cells;
|
||||
const meandered = [];
|
||||
const lastStep = riverCells.length - 1;
|
||||
const points = getRiverPoints(riverCells, riverPoints);
|
||||
let step = h[riverCells[0]] < 20 ? 1 : 10;
|
||||
|
||||
for (let i = 0; i <= lastStep; i++, step++) {
|
||||
const cell = riverCells[i];
|
||||
const isLastCell = i === lastStep;
|
||||
|
||||
const [x1, y1] = points[i];
|
||||
|
||||
meandered.push([x1, y1, fl[cell]]);
|
||||
if (isLastCell) break;
|
||||
|
||||
const nextCell = riverCells[i + 1];
|
||||
const [x2, y2] = points[i + 1];
|
||||
|
||||
if (nextCell === -1) {
|
||||
meandered.push([x2, y2, fl[cell]]);
|
||||
break;
|
||||
}
|
||||
|
||||
const dist2 = (x2 - x1) ** 2 + (y2 - y1) ** 2; // square distance between cells
|
||||
if (dist2 <= 25 && riverCells.length >= 6) continue;
|
||||
|
||||
const meander = meandering + 1 / step + Math.max(meandering - step / 100, 0);
|
||||
const angle = Math.atan2(y2 - y1, x2 - x1);
|
||||
const sinMeander = Math.sin(angle) * meander;
|
||||
const cosMeander = Math.cos(angle) * meander;
|
||||
|
||||
if (step < 20 && (dist2 > 64 || (dist2 > 36 && riverCells.length < 5))) {
|
||||
// if dist2 is big or river is small add extra points at 1/3 and 2/3 of segment
|
||||
const p1x = (x1 * 2 + x2) / 3 + -sinMeander;
|
||||
const p1y = (y1 * 2 + y2) / 3 + cosMeander;
|
||||
const p2x = (x1 + x2 * 2) / 3 + sinMeander / 2;
|
||||
const p2y = (y1 + y2 * 2) / 3 - cosMeander / 2;
|
||||
meandered.push([p1x, p1y, 0], [p2x, p2y, 0]);
|
||||
} else if (dist2 > 25 || riverCells.length < 6) {
|
||||
// if dist is medium or river is small add 1 extra middlepoint
|
||||
const p1x = (x1 + x2) / 2 + -sinMeander;
|
||||
const p1y = (y1 + y2) / 2 + cosMeander;
|
||||
meandered.push([p1x, p1y, 0]);
|
||||
}
|
||||
}
|
||||
|
||||
return meandered;
|
||||
};
|
||||
|
||||
const getRiverPoints = (riverCells, riverPoints) => {
|
||||
if (riverPoints) return riverPoints;
|
||||
|
||||
const {p} = pack.cells;
|
||||
return riverCells.map((cell, i) => {
|
||||
if (cell === -1) return getBorderPoint(riverCells[i - 1]);
|
||||
return p[cell];
|
||||
});
|
||||
};
|
||||
|
||||
const getBorderPoint = i => {
|
||||
const [x, y] = pack.cells.p[i];
|
||||
const min = Math.min(y, graphHeight - y, x, graphWidth - x);
|
||||
if (min === y) return [x, 0];
|
||||
else if (min === graphHeight - y) return [x, graphHeight];
|
||||
else if (min === x) return [0, y];
|
||||
return [graphWidth, y];
|
||||
};
|
||||
|
||||
const FLUX_FACTOR = 500;
|
||||
const MAX_FLUX_WIDTH = 1;
|
||||
const LENGTH_FACTOR = 200;
|
||||
const LENGTH_STEP_WIDTH = 1 / LENGTH_FACTOR;
|
||||
const LENGTH_PROGRESSION = [1, 1, 2, 3, 5, 8, 13, 21, 34].map(n => n / LENGTH_FACTOR);
|
||||
|
||||
const getOffset = ({flux, pointIndex, widthFactor, startingWidth}) => {
|
||||
if (pointIndex === 0) return startingWidth;
|
||||
|
||||
const fluxWidth = Math.min(flux ** 0.7 / FLUX_FACTOR, MAX_FLUX_WIDTH);
|
||||
const lengthWidth = pointIndex * LENGTH_STEP_WIDTH + (LENGTH_PROGRESSION[pointIndex] || LENGTH_PROGRESSION.at(-1));
|
||||
return widthFactor * (lengthWidth + fluxWidth) + startingWidth;
|
||||
};
|
||||
|
||||
const getSourceWidth = flux => rn(Math.min(flux ** 0.9 / FLUX_FACTOR, MAX_FLUX_WIDTH), 2);
|
||||
|
||||
// build polygon from a list of points and calculated offset (width)
|
||||
const getRiverPath = (points, widthFactor, startingWidth) => {
|
||||
lineGen.curve(d3.curveCatmullRom.alpha(0.1));
|
||||
const riverPointsLeft = [];
|
||||
const riverPointsRight = [];
|
||||
let flux = 0;
|
||||
|
||||
for (let pointIndex = 0; pointIndex < points.length; pointIndex++) {
|
||||
const [x0, y0] = points[pointIndex - 1] || points[pointIndex];
|
||||
const [x1, y1, pointFlux] = points[pointIndex];
|
||||
const [x2, y2] = points[pointIndex + 1] || points[pointIndex];
|
||||
if (pointFlux > flux) flux = pointFlux;
|
||||
|
||||
const offset = getOffset({flux, pointIndex, widthFactor, startingWidth});
|
||||
const angle = Math.atan2(y0 - y2, x0 - x2);
|
||||
const sinOffset = Math.sin(angle) * offset;
|
||||
const cosOffset = Math.cos(angle) * offset;
|
||||
|
||||
riverPointsLeft.push([x1 - sinOffset, y1 + cosOffset]);
|
||||
riverPointsRight.push([x1 + sinOffset, y1 - cosOffset]);
|
||||
}
|
||||
|
||||
const right = lineGen(riverPointsRight.reverse());
|
||||
let left = lineGen(riverPointsLeft);
|
||||
left = left.substring(left.indexOf("C"));
|
||||
|
||||
return round(right + left, 1);
|
||||
};
|
||||
|
||||
const specify = function () {
|
||||
const rivers = pack.rivers;
|
||||
if (!rivers.length) return;
|
||||
|
||||
for (const river of rivers) {
|
||||
river.basin = getBasin(river.i);
|
||||
river.name = getName(river.mouth);
|
||||
river.type = getType(river);
|
||||
}
|
||||
};
|
||||
|
||||
const getName = function (cell) {
|
||||
return Names.getCulture(pack.cells.culture[cell]);
|
||||
};
|
||||
|
||||
// weighted arrays of river type names
|
||||
const riverTypes = {
|
||||
main: {
|
||||
big: {River: 1},
|
||||
small: {Creek: 9, River: 3, Brook: 3, Stream: 1}
|
||||
},
|
||||
fork: {
|
||||
big: {Fork: 1},
|
||||
small: {Branch: 1}
|
||||
}
|
||||
};
|
||||
|
||||
let smallLength = null;
|
||||
const getType = function ({i, length, parent}) {
|
||||
if (smallLength === null) {
|
||||
const threshold = Math.ceil(pack.rivers.length * 0.15);
|
||||
smallLength = pack.rivers.map(r => r.length || 0).sort((a, b) => a - b)[threshold];
|
||||
}
|
||||
|
||||
const isSmall = length < smallLength;
|
||||
const isFork = each(3)(i) && parent && parent !== i;
|
||||
return rw(riverTypes[isFork ? "fork" : "main"][isSmall ? "small" : "big"]);
|
||||
};
|
||||
|
||||
const getApproximateLength = points => {
|
||||
const length = points.reduce((s, v, i, p) => s + (i ? Math.hypot(v[0] - p[i - 1][0], v[1] - p[i - 1][1]) : 0), 0);
|
||||
return rn(length, 2);
|
||||
};
|
||||
|
||||
// Real mouth width examples: Amazon 6000m, Volga 6000m, Dniepr 3000m, Mississippi 1300m, Themes 900m,
|
||||
// Danube 800m, Daugava 600m, Neva 500m, Nile 450m, Don 400m, Wisla 300m, Pripyat 150m, Bug 140m, Muchavets 40m
|
||||
const getWidth = offset => rn((offset / 1.5) ** 1.8, 2); // mouth width in km
|
||||
|
||||
// remove river and all its tributaries
|
||||
const remove = function (id) {
|
||||
const cells = pack.cells;
|
||||
const riversToRemove = pack.rivers.filter(r => r.i === id || r.parent === id || r.basin === id).map(r => r.i);
|
||||
riversToRemove.forEach(r => rivers.select("#river" + r).remove());
|
||||
cells.r.forEach((r, i) => {
|
||||
if (!r || !riversToRemove.includes(r)) return;
|
||||
cells.r[i] = 0;
|
||||
cells.fl[i] = grid.cells.prec[cells.g[i]];
|
||||
cells.conf[i] = 0;
|
||||
});
|
||||
pack.rivers = pack.rivers.filter(r => !riversToRemove.includes(r.i));
|
||||
};
|
||||
|
||||
const getBasin = function (r) {
|
||||
const parent = pack.rivers.find(river => river.i === r)?.parent;
|
||||
if (!parent || r === parent) return r;
|
||||
return getBasin(parent);
|
||||
};
|
||||
|
||||
const getNextId = function (rivers) {
|
||||
return rivers.length ? Math.max(...rivers.map(r => r.i)) + 1 : 1;
|
||||
};
|
||||
|
||||
return {
|
||||
generate,
|
||||
alterHeights,
|
||||
resolveDepressions,
|
||||
addMeandering,
|
||||
getRiverPath,
|
||||
specify,
|
||||
getName,
|
||||
getType,
|
||||
getBasin,
|
||||
getWidth,
|
||||
getOffset,
|
||||
getSourceWidth,
|
||||
getApproximateLength,
|
||||
getRiverPoints,
|
||||
remove,
|
||||
getNextId
|
||||
};
|
||||
})();
|
||||
Loading…
Add table
Add a link
Reference in a new issue