feat: routes overview - fix distanceScale value

modules/dynamic/export-json.js

@@ -86,7 +86,7 @@ function getMapInfo() {
 function getSettings() {
   return {
     distanceUnit: distanceUnitInput.value,
-    distanceScale: distanceScaleInput.value,
+    distanceScale,
     areaUnit: areaUnit.value,
     heightUnit: heightUnit.value,
     heightExponent: heightExponentInput.value,

modules/io/save.js

@@ -44,7 +44,7 @@ function prepareMapData() {
   const params = [version, license, dateString, seed, graphWidth, graphHeight, mapId].join("|");
   const settings = [
     distanceUnitInput.value,
-    distanceScaleInput.value,
+    distanceScale,
     areaUnit.value,
     heightUnit.value,
     heightExponentInput.value,

modules/routes-generator.js

@@ -601,6 +601,11 @@ window.Routes = (function () {
     return routePoints;
   }
 
+  function getLength(routeId) {
+    const path = routes.select("#route" + routeId).node();
+    return path.getTotalLength();
+  }
+
   function remove(route) {
     const routes = pack.cells.routes;
 
@@ -630,6 +635,7 @@ window.Routes = (function () {
     generateName,
     preparePointsArray,
     getPoints,
+    getLength,
     remove
   };
 })();

modules/ui/battle-screen.js

@@ -37,12 +37,22 @@ class Battle {
 
     // add listeners
     document.getElementById("battleType").addEventListener("click", ev => this.toggleChange(ev));
-    document.getElementById("battleType").nextElementSibling.addEventListener("click", ev => Battle.prototype.context.changeType(ev));
+    document
-    document.getElementById("battleNameShow").addEventListener("click", () => Battle.prototype.context.showNameSection());
+      .getElementById("battleType")
-    document.getElementById("battleNamePlace").addEventListener("change", ev => (Battle.prototype.context.place = ev.target.value));
+      .nextElementSibling.addEventListener("click", ev => Battle.prototype.context.changeType(ev));
+    document
+      .getElementById("battleNameShow")
+      .addEventListener("click", () => Battle.prototype.context.showNameSection());
+    document
+      .getElementById("battleNamePlace")
+      .addEventListener("change", ev => (Battle.prototype.context.place = ev.target.value));
     document.getElementById("battleNameFull").addEventListener("change", ev => Battle.prototype.context.changeName(ev));
-    document.getElementById("battleNameCulture").addEventListener("click", () => Battle.prototype.context.generateName("culture"));
+    document
-    document.getElementById("battleNameRandom").addEventListener("click", () => Battle.prototype.context.generateName("random"));
+      .getElementById("battleNameCulture")
+      .addEventListener("click", () => Battle.prototype.context.generateName("culture"));
+    document
+      .getElementById("battleNameRandom")
+      .addEventListener("click", () => Battle.prototype.context.generateName("random"));
     document.getElementById("battleNameHide").addEventListener("click", this.hideNameSection);
     document.getElementById("battleAddRegiment").addEventListener("click", this.addSide);
     document.getElementById("battleRoll").addEventListener("click", () => Battle.prototype.context.randomize());
@@ -52,11 +62,19 @@ class Battle {
     document.getElementById("battleWiki").addEventListener("click", () => wiki("Battle-Simulator"));
 
     document.getElementById("battlePhase_attackers").addEventListener("click", ev => this.toggleChange(ev));
-    document.getElementById("battlePhase_attackers").nextElementSibling.addEventListener("click", ev => Battle.prototype.context.changePhase(ev, "attackers"));
+    document
+      .getElementById("battlePhase_attackers")
+      .nextElementSibling.addEventListener("click", ev => Battle.prototype.context.changePhase(ev, "attackers"));
     document.getElementById("battlePhase_defenders").addEventListener("click", ev => this.toggleChange(ev));
-    document.getElementById("battlePhase_defenders").nextElementSibling.addEventListener("click", ev => Battle.prototype.context.changePhase(ev, "defenders"));
+    document
-    document.getElementById("battleDie_attackers").addEventListener("click", () => Battle.prototype.context.rollDie("attackers"));
+      .getElementById("battlePhase_defenders")
-    document.getElementById("battleDie_defenders").addEventListener("click", () => Battle.prototype.context.rollDie("defenders"));
+      .nextElementSibling.addEventListener("click", ev => Battle.prototype.context.changePhase(ev, "defenders"));
+    document
+      .getElementById("battleDie_attackers")
+      .addEventListener("click", () => Battle.prototype.context.rollDie("attackers"));
+    document
+      .getElementById("battleDie_defenders")
+      .addEventListener("click", () => Battle.prototype.context.rollDie("defenders"));
   }
 
   defineType() {
@@ -82,8 +100,12 @@ class Battle {
     document.getElementById("battleType").className = "icon-button-" + this.type;
 
     const sideSpecific = document.getElementById("battlePhases_" + this.type + "_attackers");
-    const attackers = sideSpecific ? sideSpecific.content : document.getElementById("battlePhases_" + this.type).content;
+    const attackers = sideSpecific
-    const defenders = sideSpecific ? document.getElementById("battlePhases_" + this.type + "_defenders").content : attackers;
+      ? sideSpecific.content
+      : document.getElementById("battlePhases_" + this.type).content;
+    const defenders = sideSpecific
+      ? document.getElementById("battlePhases_" + this.type + "_defenders").content
+      : attackers;
 
     document.getElementById("battlePhase_attackers").nextElementSibling.innerHTML = "";
     document.getElementById("battlePhase_defenders").nextElementSibling.innerHTML = "";
@@ -139,26 +161,37 @@ class Battle {
     regiment.survivors = Object.assign({}, regiment.u);
 
     const state = pack.states[regiment.state];
-    const distance = (Math.hypot(this.y - regiment.by, this.x - regiment.bx) * distanceScaleInput.value) | 0; // distance between regiment and its base
+    const distance = (Math.hypot(this.y - regiment.by, this.x - regiment.bx) * distanceScale) | 0; // distance between regiment and its base
     const color = state.color[0] === "#" ? state.color : "#999";
     const icon = `<svg width="1.4em" height="1.4em" style="margin-bottom: -.6em; stroke: #333">
       <rect x="0" y="0" width="100%" height="100%" fill="${color}"></rect>
       <text x="0" y="1.04em" style="">${regiment.icon}</text></svg>`;
     const body = `<tbody id="battle${state.i}-${regiment.i}">`;
 
-    let initial = `<tr class="battleInitial"><td>${icon}</td><td class="regiment" data-tip="${regiment.name}">${regiment.name.slice(0, 24)}</td>`;
+    let initial = `<tr class="battleInitial"><td>${icon}</td><td class="regiment" data-tip="${
-    let casualties = `<tr class="battleCasualties"><td></td><td data-tip="${state.fullName}">${state.fullName.slice(0, 26)}</td>`;
+      regiment.name
+    }">${regiment.name.slice(0, 24)}</td>`;
+    let casualties = `<tr class="battleCasualties"><td></td><td data-tip="${state.fullName}">${state.fullName.slice(
+      0,
+      26
+    )}</td>`;
     let survivors = `<tr class="battleSurvivors"><td></td><td data-tip="Supply line length, affects morale">Distance to base: ${distance} ${distanceUnitInput.value}</td>`;
 
     for (const u of options.military) {
-      initial += `<td data-tip="Initial forces" style="width: 2.5em; text-align: center">${regiment.u[u.name] || 0}</td>`;
+      initial += `<td data-tip="Initial forces" style="width: 2.5em; text-align: center">${
+        regiment.u[u.name] || 0
+      }</td>`;
       casualties += `<td data-tip="Casualties" style="width: 2.5em; text-align: center; color: red">0</td>`;
-      survivors += `<td data-tip="Survivors" style="width: 2.5em; text-align: center; color: green">${regiment.u[u.name] || 0}</td>`;
+      survivors += `<td data-tip="Survivors" style="width: 2.5em; text-align: center; color: green">${
+        regiment.u[u.name] || 0
+      }</td>`;
     }
 
     initial += `<td data-tip="Initial forces" style="width: 2.5em; text-align: center">${regiment.a || 0}</td></tr>`;
     casualties += `<td data-tip="Casualties"  style="width: 2.5em; text-align: center; color: red">0</td></tr>`;
-    survivors += `<td data-tip="Survivors" style="width: 2.5em; text-align: center; color: green">${regiment.a || 0}</td></tr>`;
+    survivors += `<td data-tip="Survivors" style="width: 2.5em; text-align: center; color: green">${
+      regiment.a || 0
+    }</td></tr>`;
 
     const div = side === "attackers" ? battleAttackers : battleDefenders;
     div.innerHTML += body + initial + casualties + survivors + "</tbody>";
@@ -173,17 +206,23 @@ class Battle {
       .filter(s => s.military && !s.removed)
       .map(s => s.military)
       .flat();
-    const distance = reg => rn(Math.hypot(context.y - reg.y, context.x - reg.x) * distanceScaleInput.value) + " " + distanceUnitInput.value;
+    const distance = reg =>
-    const isAdded = reg => context.defenders.regiments.some(r => r === reg) || context.attackers.regiments.some(r => r === reg);
+      rn(Math.hypot(context.y - reg.y, context.x - reg.x) * distanceScale) + " " + distanceUnitInput.value;
+    const isAdded = reg =>
+      context.defenders.regiments.some(r => r === reg) || context.attackers.regiments.some(r => r === reg);
 
     body.innerHTML = regiments
       .map(r => {
         const s = pack.states[r.state],
           added = isAdded(r),
           dist = added ? "0 " + distanceUnitInput.value : distance(r);
-        return `<div ${added ? "class='inactive'" : ""} data-s=${s.i} data-i=${r.i} data-state=${s.name} data-regiment=${r.name} 
+        return `<div ${added ? "class='inactive'" : ""} data-s=${s.i} data-i=${r.i} data-state=${
+          s.name
+        } data-regiment=${r.name} 
         data-total=${r.a} data-distance=${dist} data-tip="Click to select regiment">
-        <svg width=".9em" height=".9em" style="margin-bottom:-1px; stroke: #333"><rect x="0" y="0" width="100%" height="100%" fill="${s.color}" ></svg>
+        <svg width=".9em" height=".9em" style="margin-bottom:-1px; stroke: #333"><rect x="0" y="0" width="100%" height="100%" fill="${
+          s.color
+        }" ></svg>
         <div style="width:6em">${s.name.slice(0, 11)}</div>
         <div style="width:1.2em">${r.icon}</div>
         <div style="width:13em">${r.name.slice(0, 24)}</div>
@@ -267,7 +306,10 @@ class Battle {
   }
 
   generateName(type) {
-    const place = type === "culture" ? Names.getCulture(pack.cells.culture[this.cell], null, null, "") : Names.getBase(rand(nameBases.length - 1));
+    const place =
+      type === "culture"
+        ? Names.getCulture(pack.cells.culture[this.cell], null, null, "")
+        : Names.getBase(rand(nameBases.length - 1));
     document.getElementById("battleNamePlace").value = this.place = place;
     document.getElementById("battleNameFull").value = this.name = this.defineName();
     $("#battleScreen").dialog({title: this.name});
@@ -286,35 +328,161 @@ class Battle {
   calculateStrength(side) {
     const scheme = {
       // field battle phases
-      skirmish: {melee: 0.2, ranged: 2.4, mounted: 0.1, machinery: 3, naval: 1, armored: 0.2, aviation: 1.8, magical: 1.8}, // ranged excel
+      skirmish: {
+        melee: 0.2,
+        ranged: 2.4,
+        mounted: 0.1,
+        machinery: 3,
+        naval: 1,
+        armored: 0.2,
+        aviation: 1.8,
+        magical: 1.8
+      }, // ranged excel
       melee: {melee: 2, ranged: 1.2, mounted: 1.5, machinery: 0.5, naval: 0.2, armored: 2, aviation: 0.8, magical: 0.8}, // melee excel
       pursue: {melee: 1, ranged: 1, mounted: 4, machinery: 0.05, naval: 1, armored: 1, aviation: 1.5, magical: 0.6}, // mounted excel
-      retreat: {melee: 0.1, ranged: 0.01, mounted: 0.5, machinery: 0.01, naval: 0.2, armored: 0.1, aviation: 0.8, magical: 0.05}, // reduced
+      retreat: {
+        melee: 0.1,
+        ranged: 0.01,
+        mounted: 0.5,
+        machinery: 0.01,
+        naval: 0.2,
+        armored: 0.1,
+        aviation: 0.8,
+        magical: 0.05
+      }, // reduced
 
       // naval battle phases
       shelling: {melee: 0, ranged: 0.2, mounted: 0, machinery: 2, naval: 2, armored: 0, aviation: 0.1, magical: 0.5}, // naval and machinery excel
-      boarding: {melee: 1, ranged: 0.5, mounted: 0.5, machinery: 0, naval: 0.5, armored: 0.4, aviation: 0, magical: 0.2}, // melee excel
+      boarding: {
+        melee: 1,
+        ranged: 0.5,
+        mounted: 0.5,
+        machinery: 0,
+        naval: 0.5,
+        armored: 0.4,
+        aviation: 0,
+        magical: 0.2
+      }, // melee excel
       chase: {melee: 0, ranged: 0.15, mounted: 0, machinery: 1, naval: 1, armored: 0, aviation: 0.15, magical: 0.5}, // reduced
-      withdrawal: {melee: 0, ranged: 0.02, mounted: 0, machinery: 0.5, naval: 0.1, armored: 0, aviation: 0.1, magical: 0.3}, // reduced
+      withdrawal: {
+        melee: 0,
+        ranged: 0.02,
+        mounted: 0,
+        machinery: 0.5,
+        naval: 0.1,
+        armored: 0,
+        aviation: 0.1,
+        magical: 0.3
+      }, // reduced
 
       // siege phases
-      blockade: {melee: 0.25, ranged: 0.25, mounted: 0.2, machinery: 0.5, naval: 0.2, armored: 0.1, aviation: 0.25, magical: 0.25}, // no active actions
+      blockade: {
-      sheltering: {melee: 0.3, ranged: 0.5, mounted: 0.2, machinery: 0.5, naval: 0.2, armored: 0.1, aviation: 0.25, magical: 0.25}, // no active actions
+        melee: 0.25,
+        ranged: 0.25,
+        mounted: 0.2,
+        machinery: 0.5,
+        naval: 0.2,
+        armored: 0.1,
+        aviation: 0.25,
+        magical: 0.25
+      }, // no active actions
+      sheltering: {
+        melee: 0.3,
+        ranged: 0.5,
+        mounted: 0.2,
+        machinery: 0.5,
+        naval: 0.2,
+        armored: 0.1,
+        aviation: 0.25,
+        magical: 0.25
+      }, // no active actions
       sortie: {melee: 2, ranged: 0.5, mounted: 1.2, machinery: 0.2, naval: 0.1, armored: 0.5, aviation: 1, magical: 1}, // melee excel
-      bombardment: {melee: 0.2, ranged: 0.5, mounted: 0.2, machinery: 3, naval: 1, armored: 0.5, aviation: 1, magical: 1}, // machinery excel
+      bombardment: {
-      storming: {melee: 1, ranged: 0.6, mounted: 0.5, machinery: 1, naval: 0.1, armored: 0.1, aviation: 0.5, magical: 0.5}, // melee excel
+        melee: 0.2,
+        ranged: 0.5,
+        mounted: 0.2,
+        machinery: 3,
+        naval: 1,
+        armored: 0.5,
+        aviation: 1,
+        magical: 1
+      }, // machinery excel
+      storming: {
+        melee: 1,
+        ranged: 0.6,
+        mounted: 0.5,
+        machinery: 1,
+        naval: 0.1,
+        armored: 0.1,
+        aviation: 0.5,
+        magical: 0.5
+      }, // melee excel
       defense: {melee: 2, ranged: 3, mounted: 1, machinery: 1, naval: 0.1, armored: 1, aviation: 0.5, magical: 1}, // ranged excel
-      looting: {melee: 1.6, ranged: 1.6, mounted: 0.5, machinery: 0.2, naval: 0.02, armored: 0.2, aviation: 0.1, magical: 0.3}, // melee excel
+      looting: {
-      surrendering: {melee: 0.1, ranged: 0.1, mounted: 0.05, machinery: 0.01, naval: 0.01, armored: 0.02, aviation: 0.01, magical: 0.03}, // reduced
+        melee: 1.6,
+        ranged: 1.6,
+        mounted: 0.5,
+        machinery: 0.2,
+        naval: 0.02,
+        armored: 0.2,
+        aviation: 0.1,
+        magical: 0.3
+      }, // melee excel
+      surrendering: {
+        melee: 0.1,
+        ranged: 0.1,
+        mounted: 0.05,
+        machinery: 0.01,
+        naval: 0.01,
+        armored: 0.02,
+        aviation: 0.01,
+        magical: 0.03
+      }, // reduced
 
       // ambush phases
       surprise: {melee: 2, ranged: 2.4, mounted: 1, machinery: 1, naval: 1, armored: 1, aviation: 0.8, magical: 1.2}, // increased
-      shock: {melee: 0.5, ranged: 0.5, mounted: 0.5, machinery: 0.4, naval: 0.3, armored: 0.1, aviation: 0.4, magical: 0.5}, // reduced
+      shock: {
+        melee: 0.5,
+        ranged: 0.5,
+        mounted: 0.5,
+        machinery: 0.4,
+        naval: 0.3,
+        armored: 0.1,
+        aviation: 0.4,
+        magical: 0.5
+      }, // reduced
 
       // langing phases
-      landing: {melee: 0.8, ranged: 0.6, mounted: 0.6, machinery: 0.5, naval: 0.5, armored: 0.5, aviation: 0.5, magical: 0.6}, // reduced
+      landing: {
-      flee: {melee: 0.1, ranged: 0.01, mounted: 0.5, machinery: 0.01, naval: 0.5, armored: 0.1, aviation: 0.2, magical: 0.05}, // reduced
+        melee: 0.8,
-      waiting: {melee: 0.05, ranged: 0.5, mounted: 0.05, machinery: 0.5, naval: 2, armored: 0.05, aviation: 0.5, magical: 0.5}, // reduced
+        ranged: 0.6,
+        mounted: 0.6,
+        machinery: 0.5,
+        naval: 0.5,
+        armored: 0.5,
+        aviation: 0.5,
+        magical: 0.6
+      }, // reduced
+      flee: {
+        melee: 0.1,
+        ranged: 0.01,
+        mounted: 0.5,
+        machinery: 0.01,
+        naval: 0.5,
+        armored: 0.1,
+        aviation: 0.2,
+        magical: 0.05
+      }, // reduced
+      waiting: {
+        melee: 0.05,
+        ranged: 0.5,
+        mounted: 0.05,
+        machinery: 0.5,
+        naval: 2,
+        armored: 0.05,
+        aviation: 0.5,
+        magical: 0.5
+      }, // reduced
 
       // air battle phases
       maneuvering: {melee: 0, ranged: 0.1, mounted: 0, machinery: 0.2, naval: 0, armored: 0, aviation: 1, magical: 0.2}, // aviation
@@ -324,7 +492,8 @@ class Battle {
     const forces = this.getJoinedForces(this[side].regiments);
     const phase = this[side].phase;
     const adjuster = Math.max(populationRate / 10, 10); // population adjuster, by default 100
-    this[side].power = d3.sum(options.military.map(u => (forces[u.name] || 0) * u.power * scheme[phase][u.type])) / adjuster;
+    this[side].power =
+      d3.sum(options.military.map(u => (forces[u.name] || 0) * u.power * scheme[phase][u.type])) / adjuster;
     const UIvalue = this[side].power ? Math.max(this[side].power | 0, 1) : 0;
     document.getElementById("battlePower_" + side).innerHTML = UIvalue;
   }
@@ -723,11 +892,13 @@ class Battle {
 
     const status = battleStatus[+P(0.7)];
     const result = `The ${this.getTypeName(this.type)} ended in ${status}`;
-    const legend = `${this.name} took place in ${options.year} ${options.eraShort}. It was fought between ${getSide(this.attackers.regiments, 1)} and ${getSide(
+    const legend = `${this.name} took place in ${options.year} ${options.eraShort}. It was fought between ${getSide(
-      this.defenders.regiments,
+      this.attackers.regiments,
-      0
+      1
-    )}. ${result}.
+    )} and ${getSide(this.defenders.regiments, 0)}. ${result}.
-      \r\nAttackers losses: ${getLosses(this.attackers.casualties)}%, defenders losses: ${getLosses(this.defenders.casualties)}%`;
+      \r\nAttackers losses: ${getLosses(this.attackers.casualties)}%, defenders losses: ${getLosses(
+      this.defenders.casualties
+    )}%`;
     notes.push({id: `marker${i}`, name: this.name, legend});
 
     tip(`${this.name} is over. ${result}`, true, "success", 4000);

modules/ui/editors.js

@@ -1175,7 +1175,6 @@ function getAreaUnit(squareMark = "²") {
 }
 
 function getArea(rawArea) {
-  const distanceScale = byId("distanceScaleInput")?.value;
   return rawArea * distanceScale ** 2;
 }
 

modules/ui/lakes-editor.js

@@ -48,8 +48,7 @@ function editLake() {
     document.getElementById("lakeArea").value = si(getArea(l.area)) + " " + getAreaUnit();
 
     const length = d3.polygonLength(l.vertices.map(v => pack.vertices.p[v]));
-    document.getElementById("lakeShoreLength").value =
+    document.getElementById("lakeShoreLength").value = si(length * distanceScale) + " " + distanceUnitInput.value;
-      si(length * distanceScaleInput.value) + " " + distanceUnitInput.value;
 
     const lakeCells = Array.from(cells.i.filter(i => cells.f[i] === l.i));
     const heights = lakeCells.map(i => cells.h[i]);

modules/ui/layers.js

@@ -1792,7 +1792,6 @@ function toggleScaleBar(event) {
 function drawScaleBar(scaleBar, scaleLevel) {
   if (!scaleBar.size() || scaleBar.style("display") === "none") return;
 
-  const distanceScale = +distanceScaleInput.value;
   const unit = distanceUnitInput.value;
   const size = +scaleBar.attr("data-bar-size");
 

modules/ui/measurers.js

@@ -66,7 +66,7 @@ class Measurer {
   }
 
   getDash() {
-    return rn(30 / distanceScaleInput.value, 2);
+    return rn(30 / distanceScale, 2);
   }
 
   drag() {
@@ -205,7 +205,7 @@ class Ruler extends Measurer {
 
   updateLabel() {
     const length = this.getLength();
-    const text = rn(length * distanceScaleInput.value) + " " + distanceUnitInput.value;
+    const text = rn(length * distanceScale) + " " + distanceUnitInput.value;
     const [x, y] = last(this.points);
     this.el.select("text").attr("x", x).attr("y", y).text(text);
   }
@@ -337,7 +337,7 @@ class Opisometer extends Measurer {
 
   updateLabel() {
     const length = this.el.select("path").node().getTotalLength();
-    const text = rn(length * distanceScaleInput.value) + " " + distanceUnitInput.value;
+    const text = rn(length * distanceScale) + " " + distanceUnitInput.value;
     const [x, y] = last(this.points);
     this.el.select("text").attr("x", x).attr("y", y).text(text);
   }
@@ -475,7 +475,7 @@ class RouteOpisometer extends Measurer {
 
   updateLabel() {
     const length = this.el.select("path").node().getTotalLength();
-    const text = rn(length * distanceScaleInput.value) + " " + distanceUnitInput.value;
+    const text = rn(length * distanceScale) + " " + distanceUnitInput.value;
     const [x, y] = last(this.points);
     this.el.select("text").attr("x", x).attr("y", y).text(text);
   }

modules/ui/options.js

@@ -545,6 +545,7 @@ function applyStoredOptions() {
     lock(key);
 
     if (key === "points") changeCellsDensity(+value);
+    if (key === "distanceScale") distanceScale = +value;
 
     // add saved style presets to options
     if (key.slice(0, 5) === "style") applyOption(stylePreset, key, key.slice(5));
@@ -605,7 +606,8 @@ function randomizeOptions() {
 
   // 'Units Editor' settings
   const US = navigator.language === "en-US";
-  if (randomize || !locked("distanceScale")) distanceScaleOutput.value = distanceScaleInput.value = gauss(3, 1, 1, 5);
+  if (randomize || !locked("distanceScale"))
+    distanceScale = distanceScaleOutput.value = distanceScaleInput.value = gauss(3, 1, 1, 5);
   if (!stored("distanceUnit")) distanceUnitInput.value = US ? "mi" : "km";
   if (!stored("heightUnit")) heightUnit.value = US ? "ft" : "m";
   if (!stored("temperatureScale")) temperatureScale.value = US ? "°F" : "°C";

modules/ui/rivers-editor.js

@@ -81,7 +81,7 @@ function editRiver(id) {
 
   function updateRiverLength(river) {
     river.length = rn(elSelected.node().getTotalLength() / 2, 2);
-    const lengthUI = `${rn(river.length * distanceScaleInput.value)} ${distanceUnitInput.value}`;
+    const lengthUI = `${rn(river.length * distanceScale)} ${distanceUnitInput.value}`;
     byId("riverLength").value = lengthUI;
   }
 
@@ -91,7 +91,7 @@ function editRiver(id) {
     const meanderedPoints = addMeandering(cells);
     river.width = getWidth(getOffset(discharge, meanderedPoints.length, widthFactor, sourceWidth));
 
-    const width = `${rn(river.width * distanceScaleInput.value, 3)} ${distanceUnitInput.value}`;
+    const width = `${rn(river.width * distanceScale, 3)} ${distanceUnitInput.value}`;
     byId("riverWidth").value = width;
   }
 
@@ -235,7 +235,7 @@ function editRiver(id) {
       .data()
       .map(([x, y]) => findCell(x, y));
     const river = getRiver();
-    const riverLen = rn(river.length * distanceScaleInput.value);
+    const riverLen = rn(river.length * distanceScale);
     showElevationProfile(points, riverLen, true);
   }
 

modules/ui/rivers-overview.js

@@ -35,8 +35,8 @@ function overviewRivers() {
 
     for (const r of pack.rivers) {
       const discharge = r.discharge + " m³/s";
-      const length = rn(r.length * distanceScaleInput.value) + " " + unit;
+      const length = rn(r.length * distanceScale) + " " + unit;
-      const width = rn(r.width * distanceScaleInput.value, 3) + " " + unit;
+      const width = rn(r.width * distanceScale, 3) + " " + unit;
       const basin = pack.rivers.find(river => river.i === r.basin)?.name;
 
       lines += /* html */ `<div
@@ -67,9 +67,9 @@ function overviewRivers() {
     const averageDischarge = rn(d3.mean(pack.rivers.map(r => r.discharge)));
     riversFooterDischarge.innerHTML = averageDischarge + " m³/s";
     const averageLength = rn(d3.mean(pack.rivers.map(r => r.length)));
-    riversFooterLength.innerHTML = averageLength * distanceScaleInput.value + " " + unit;
+    riversFooterLength.innerHTML = averageLength * distanceScale + " " + unit;
     const averageWidth = rn(d3.mean(pack.rivers.map(r => r.width)), 3);
-    riversFooterWidth.innerHTML = rn(averageWidth * distanceScaleInput.value, 3) + " " + unit;
+    riversFooterWidth.innerHTML = rn(averageWidth * distanceScale, 3) + " " + unit;
 
     // add listeners
     body.querySelectorAll("div.states").forEach(el => el.addEventListener("mouseenter", ev => riverHighlightOn(ev)));
@@ -143,8 +143,8 @@ function overviewRivers() {
     body.querySelectorAll(":scope > div").forEach(function (el) {
       const d = el.dataset;
       const discharge = d.discharge + " m³/s";
-      const length = rn(d.length * distanceScaleInput.value) + " " + distanceUnitInput.value;
+      const length = rn(d.length * distanceScale) + " " + distanceUnitInput.value;
-      const width = rn(d.width * distanceScaleInput.value, 3) + " " + distanceUnitInput.value;
+      const width = rn(d.width * distanceScale, 3) + " " + distanceUnitInput.value;
       data += [d.id, d.name, d.type, discharge, length, width, d.basin].join(",") + "\n";
     });
 

modules/ui/routes-editor.js

@@ -37,7 +37,7 @@ function editRoute(id) {
   // add listeners
   byId("routeCreateSelectingCells").on("click", showCreationDialog);
   byId("routeSplit").on("click", togglePressed);
-  byId("routeJoin").on("click", joinRoutes);
+  byId("routeJoin").on("click", openJoinRoutesDialog);
   byId("routeElevationProfile").on("click", showRouteElevationProfile);
   byId("routeLegend").on("click", editRouteLegend);
   byId("routeRemove").on("click", removeRoute);
@@ -71,9 +71,8 @@ function editRoute(id) {
   }
 
   function updateRouteLength(route) {
-    route.length = rn(elSelected.node().getTotalLength() / 2, 2);
+    route.length = Routes.getLength(route.i);
-    const lengthUI = `${rn(route.length * distanceScale)} ${distanceUnitInput.value}`;
+    byId("routeLength").value = rn(route.length * distanceScale) + " " + distanceUnitInput.value;
-    byId("routeLength").value = lengthUI;
   }
 
   function drawControlPoints(points) {
@@ -247,29 +246,55 @@ function editRoute(id) {
     }
   }
 
-  function joinRoutes() {
+  function openJoinRoutesDialog() {
     const route = getRoute();
     const firstCell = route.cells.at(0);
     const lastCell = route.cells.at(-1);
 
-    let joinedRoute = null;
+    const candidateRoutes = pack.routes.filter(r => {
-    for (const nextRoute of pack.routes) {
+      if (r.i === route.i) return false;
-      if (joinedRoute) break;
+      if (r.group !== route.group) return false;
-      if (nextRoute.i === route.i) continue;
+      if (r.cells.at(0) === lastCell) return true;
-      if (nextRoute.cells.at(0) === lastCell) joinedRoute = nextRoute;
+      if (r.cells.at(-1) === firstCell) return true;
-      if (nextRoute.cells.at(-1) === firstCell) joinedRoute = nextRoute;
+      if (r.cells.at(0) === firstCell) return true;
-      if (nextRoute.cells.at(0) === firstCell) joinedRoute = nextRoute;
+      if (r.cells.at(-1) === lastCell) return true;
-      if (nextRoute.cells.at(-1) === lastCell) joinedRoute = nextRoute;
+      return false;
-    }
+    });
 
-    if (joinedRoute) {
+    if (candidateRoutes.length) {
-      join(route, joinedRoute);
+      const options = candidateRoutes.map(r => {
+        r.name = r.name || Routes.generateName(r);
+        r.length = r.length || getRouteLength(r.i);
+        const length = rn(r.length * distanceScale) + " " + unit;
+        return `<option value="${r.i}">${r.name} (${length})</option>`;
+      });
+      alertMessage.innerHTML = /* html */ `<div>Route to join with:
+        <select>${options.join("")}</select>
+      </div>`;
+
+      $("#alert").dialog({
+        title: "Join routes",
+        width: fitContent(),
+        position: {my: "center", at: "center", of: "svg"},
+        buttons: {
+          Cancel: () => {
+            $("#alert").dialog("close");
+          },
+          Join: () => {
+            const selectedRouteId = +alertMessage.querySelector("select").value;
+            const selectedRoute = pack.routes.find(r => r.i === selectedRouteId);
+            joinRoutes(route, selectedRoute);
             tip("Routes joined", false, "success", 5000);
+            $("#alert").dialog("close");
+          }
+        }
+      });
     } else {
       tip("No routes to join with. Route must start or end at current route's start or end cell", false, "error", 4000);
     }
+  }
 
-    function join(route, joinedRoute) {
+  function joinRoutes(route, joinedRoute) {
     if (!route.points) route.points = debug.selectAll("#controlPoints > *").data();
     if (!joinedRoute.points) joinedRoute.points = Routes.getPoints(joinedRoute, Routes.preparePointsArray());
 
@@ -302,7 +327,6 @@ function editRoute(id) {
     drawCells();
     redrawRoute();
   }
-  }
 
   function showCreationDialog() {
     const route = getRoute();
@@ -346,8 +370,8 @@ function editRoute(id) {
 
   function showRouteElevationProfile() {
     const route = getRoute();
-    const routeLen = rn(route.length * distanceScaleInput.value);
+    const length = rn(route.length * distanceScale);
-    showElevationProfile(route.cells, routeLen, false);
+    showElevationProfile(route.cells, length, false);
   }
 
   function editRouteLegend() {

modules/ui/routes-overview.js

@@ -29,12 +29,11 @@ function overviewRoutes() {
   function routesOverviewAddLines() {
     body.innerHTML = "";
     let lines = "";
-    const unit = distanceUnitInput.value;
 
     for (const route of pack.routes) {
       route.name = route.name || Routes.generateName(route);
-      route.length = route.length || getRouteLength(route.i);
+      route.length = route.length || Routes.getLength(route.i);
-      const length = rn(route.length * distanceScale) + " " + unit;
+      const length = rn(route.length * distanceScale) + " " + distanceUnitInput.value;
 
       lines += /* html */ `<div
         class="states"
@@ -56,7 +55,7 @@ function overviewRoutes() {
     // update footer
     routesFooterNumber.innerHTML = pack.routes.length;
     const averageLength = rn(d3.mean(pack.routes.map(r => r.length)));
-    routesFooterLength.innerHTML = averageLength * distanceScale + " " + unit;
+    routesFooterLength.innerHTML = averageLength * distanceScale + " " + distanceUnitInput.value;
 
     // add listeners
     body.querySelectorAll("div.states").forEach(el => el.on("mouseenter", routeHighlightOn));
@@ -68,11 +67,6 @@ function overviewRoutes() {
     applySorting(routesHeader);
   }
 
-  function getRouteLength(routeId) {
-    const path = routes.select("#route" + routeId).node();
-    return rn(path.getTotalLength() / 2, 2);
-  }
-
   function routeHighlightOn(event) {
     if (!layerIsOn("toggleRoutes")) toggleRoutes();
     const routeId = +event.target.dataset.id;

modules/ui/style.js

@@ -503,7 +503,7 @@ styleGridScale.addEventListener("input", function () {
 
 function calculateFriendlyGridSize() {
   const size = styleGridScale.value * 25;
-  const friendly = `${rn(size * distanceScaleInput.value, 2)} ${distanceUnitInput.value}`;
+  const friendly = `${rn(size * distanceScale, 2)} ${distanceUnitInput.value}`;
   styleGridSizeFriendly.value = friendly;
 }
 

modules/ui/submap.js

@@ -258,11 +258,16 @@ window.UISubmap = (function () {
     byId("latitudeInput").value = latitudeOutput.value;
 
     // fix scale
-    distanceScaleInput.value = distanceScaleOutput.value = rn((distanceScale = distanceScaleOutput.value / scale), 2);
+    distanceScale =
+      distanceScaleInput.value =
+      distanceScaleOutput.value =
+        rn((distanceScale = distanceScaleOutput.value / scale), 2);
+
     populationRateInput.value = populationRateOutput.value = rn(
       (populationRate = populationRateOutput.value / scale),
       2
     );
+
     customization = 0;
     startResample(options);
   }, 1000);

modules/ui/units-editor.js

@@ -55,6 +55,7 @@ function editUnits() {
   }
 
   function changeDistanceScale() {
+    distanceScale = +this.value;
     renderScaleBar();
     calculateFriendlyGridSize();
   }
@@ -90,10 +91,9 @@ function editUnits() {
   }
 
   function restoreDefaultUnits() {
-    // distanceScale
     distanceScale = 3;
-    byId("distanceScaleOutput").value = 3;
+    byId("distanceScaleOutput").value = distanceScale;
-    byId("distanceScaleInput").value = 3;
+    byId("distanceScaleInput").value = distanceScale;
     unlock("distanceScale");
 
     // units

modules/ui/world-configurator.js

@@ -105,13 +105,12 @@ function editWorld() {
 
     calculateMapCoordinates();
     const mc = mapCoordinates;
-    const scale = +distanceScaleInput.value;
     const unit = distanceUnitInput.value;
-    const meridian = toKilometer(eqD * 2 * scale);
+    const meridian = toKilometer(eqD * 2 * distanceScale);
     byId("mapSize").innerHTML = `${graphWidth}x${graphHeight}`;
-    byId("mapSizeFriendly").innerHTML = `${rn(graphWidth * scale)}x${rn(graphHeight * scale)} ${unit}`;
+    byId("mapSizeFriendly").innerHTML = `${rn(graphWidth * distanceScale)}x${rn(graphHeight * distanceScale)} ${unit}`;
     byId("meridianLength").innerHTML = rn(eqD * 2);
-    byId("meridianLengthFriendly").innerHTML = `${rn(eqD * 2 * scale)} ${unit}`;
+    byId("meridianLengthFriendly").innerHTML = `${rn(eqD * 2 * distanceScale)} ${unit}`;
     byId("meridianLengthEarth").innerHTML = meridian ? " = " + rn(meridian / 200) + "%🌏" : "";
     byId("mapCoordinates").innerHTML = `${lat(mc.latN)} ${Math.abs(rn(mc.lonW))}°W; ${lat(mc.latS)} ${rn(mc.lonE)}°E`;