feat: enhanced population, sky burgs, air routes, geojson exports

- Replace 2-stage burg placement with 6-tier hierarchy (capital, largePort,
  regionalCenter, marketTown, largeVillage, smallVillage, hamlet) with
  cultural spacing modifiers and tier-based population ranges
- Add flying/skyPort/altitude properties to Burg interface with dedicated
  skyburg icon group and Sky Realm state support
- Add air route generation between sky ports using Urquhart graph with
  purple dashed styling across all 12 style presets
- Fix state statistics double-counting and limit province centers to
  major settlements (capped at 20 per state)
- Create standalone GeoJSON export bookmarklet scripts for burgs, states,
  provinces, cultures, religions, routes, rivers, cells, markers, and
  bundled ZIP export
- Support up to 100K burgs (Uint16Array -> Uint32Array for cells.burg)
  and 500K cells (extended density map and slider ranges)
- Add nix flake for development dependencies

Author: barrulus

flake.lock

@@ -0,0 +1,17 @@
+{
+  description = "Azgaar's Fantasy Map Generator";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs =
+    { self, nixpkgs }:
+    {
+
+      packages.x86_64-linux.hello = nixpkgs.legacyPackages.x86_64-linux.hello;
+
+      packages.x86_64-linux.default = self.packages.x86_64-linux.hello;
+
+    };
+}

flake.nix

@@ -65,6 +65,7 @@ let routes = viewbox.append("g").attr("id", "routes");
 let roads = routes.append("g").attr("id", "roads");
 let trails = routes.append("g").attr("id", "trails");
 let searoutes = routes.append("g").attr("id", "searoutes");
+let airroutes = routes.append("g").attr("id", "airroutes");
 let temperature = viewbox.append("g").attr("id", "temperature");
 let coastline = viewbox.append("g").attr("id", "coastline");
 let ice = viewbox.append("g").attr("id", "ice");

public/main.js

@@ -340,6 +340,7 @@ async function parseLoadedData(data, mapVersion) {
       roads = routes.select("#roads");
       trails = routes.select("#trails");
       searoutes = routes.select("#searoutes");
+      airroutes = routes.select("#airroutes");
       temperature = viewbox.select("#temperature");
       coastline = viewbox.select("#coastline");
       prec = viewbox.select("#prec");
@@ -393,7 +394,7 @@ async function parseLoadedData(data, mapVersion) {
       pack.routes = data[37] ? JSON.parse(data[37]) : [];
       pack.zones = data[38] ? JSON.parse(data[38]) : [];
       pack.cells.biome = Uint8Array.from(data[16].split(","));
-      pack.cells.burg = Uint16Array.from(data[17].split(","));
+      pack.cells.burg = Uint32Array.from(data[17].split(","));
       pack.cells.conf = Uint8Array.from(data[18].split(","));
       pack.cells.culture = Uint16Array.from(data[19].split(","));
       pack.cells.fl = Uint16Array.from(data[20].split(","));

public/modules/io/load.js

@@ -79,7 +79,7 @@ window.Resample = (function () {
     pack.cells.pop = new Float32Array(pack.cells.i.length);
     pack.cells.culture = new Uint16Array(pack.cells.i.length);
     pack.cells.state = new Uint16Array(pack.cells.i.length);
-    pack.cells.burg = new Uint16Array(pack.cells.i.length);
+    pack.cells.burg = new Uint32Array(pack.cells.i.length);
     pack.cells.religion = new Uint16Array(pack.cells.i.length);
     pack.cells.province = new Uint16Array(pack.cells.i.length);
 

public/modules/resample.js

@@ -130,7 +130,7 @@ window.Submap = (function () {
     const cells = pack.cells;
     cells.culture = new Uint16Array(pn);
     cells.state = new Uint16Array(pn);
-    cells.burg = new Uint16Array(pn);
+    cells.burg = new Uint32Array(pn);
     cells.religion = new Uint16Array(pn);
     cells.province = new Uint16Array(pn);
 

public/modules/submap.js

@@ -286,7 +286,7 @@ function editHeightmap(options) {
     const pop = new Uint16Array(l);
     const routes = {};
     const s = new Uint16Array(l);
-    const burg = new Uint16Array(l);
+    const burg = new Uint32Array(l);
     const state = new Uint16Array(l);
     const province = new Uint16Array(l);
     const culture = new Uint16Array(l);
@@ -358,7 +358,7 @@ function editHeightmap(options) {
     pack.cells.pop = new Float32Array(n);
     pack.cells.routes = {};
     pack.cells.s = new Uint16Array(n);
-    pack.cells.burg = new Uint16Array(n);
+    pack.cells.burg = new Uint32Array(n);
     pack.cells.state = new Uint16Array(n);
     pack.cells.province = new Uint16Array(n);
     pack.cells.culture = new Uint16Array(n);

public/modules/ui/heightmap-editor.js

@@ -111,7 +111,7 @@ function updateOutputToFollowInput(ev) {
   const value = ev.target.value;
 
   // specific cases
-  if (id === "manorsInput") return (manorsOutput.value = value == 1000 ? "auto" : value);
+  if (id === "manorsInput") return (manorsOutput.value = value == 100001 ? "auto" : value);
 
   // generic case
   if (id.slice(-5) === "Input") {
@@ -327,7 +327,13 @@ const cellsDensityMap = {
   10: 70000,
   11: 80000,
   12: 90000,
-  13: 100000
+  13: 100000,
+  14: 150000,
+  15: 200000,
+  16: 250000,
+  17: 300000,
+  18: 400000,
+  19: 500000
 };
 
 function changeCellsDensity(value) {
@@ -339,7 +345,7 @@ function changeCellsDensity(value) {
 }
 
 function getCellsDensityColor(cells) {
-  return cells > 50000 ? "#b12117" : cells !== 10000 ? "#dfdf12" : "#053305";
+  return cells > 200000 ? "#b12117" : cells > 50000 ? "#df6812" : cells !== 10000 ? "#dfdf12" : "#053305";
 }
 
 function changeCultureSet() {
@@ -592,7 +598,7 @@ function randomizeOptions() {
   if (randomize || !locked("statesNumber")) statesNumber.value = gauss(18, 5, 2, 30);
   if (randomize || !locked("provincesRatio")) provincesRatio.value = gauss(20, 10, 20, 100);
   if (randomize || !locked("manors")) {
-    manorsInput.value = 1000;
+    manorsInput.value = 100001;
     manorsOutput.value = "auto";
   }
   if (randomize || !locked("religionsNumber")) religionsNumber.value = gauss(6, 3, 2, 10);

public/modules/ui/options.js

@@ -40,7 +40,7 @@ function editRouteGroups() {
     byId("routeGroupsEditorBody").innerHTML = lines.join("");
   }
 
-  const DEFAULT_GROUPS = ["roads", "trails", "searoutes"];
+  const DEFAULT_GROUPS = ["roads", "trails", "searoutes", "airroutes"];
 
   function addGroup() {
     prompt("Type group name", {default: "route-group-new"}, v => {

public/modules/ui/route-group-editor.js

@@ -238,6 +238,7 @@ function addStylePreset() {
       "#roads": ["opacity", "stroke", "stroke-width", "stroke-dasharray", "stroke-linecap", "filter", "mask"],
       "#trails": ["opacity", "stroke", "stroke-width", "stroke-dasharray", "stroke-linecap", "filter", "mask"],
       "#searoutes": ["opacity", "stroke", "stroke-width", "stroke-dasharray", "stroke-linecap", "filter", "mask"],
+      "#airroutes": ["opacity", "stroke", "stroke-width", "stroke-dasharray", "stroke-linecap", "filter", "mask"],
       "#statesBody": ["opacity", "filter"],
       "#statesHalo": ["opacity", "data-width", "stroke-width", "filter"],
       "#provs": ["opacity", "fill", "font-size", "font-family", "filter"],