feat: routes - add route on burg creation

modules/burgs-and-states.js

@@ -253,11 +253,11 @@ window.BurgsAndStates = (() => {
     return "Generic";
   };
 
-  const defineBurgFeatures = newburg => {
+  const defineBurgFeatures = burg => {
     const {cells} = pack;
 
     pack.burgs
-      .filter(b => (newburg ? b.i == newburg.i : b.i && !b.removed && !b.lock))
+      .filter(b => (burg ? b.i == burg.i : b.i && !b.removed && !b.lock))
       .forEach(b => {
         const pop = b.population;
         b.citadel = Number(b.capital || (pop > 50 && P(0.75)) || (pop > 15 && P(0.5)) || P(0.1));

modules/routes-generator.js

@@ -172,58 +172,6 @@ window.Routes = (function () {
       return routesMerged > 1 ? mergeRoutes(routes) : routes;
     }
 
-    function preparePointsArray() {
-      const {cells, burgs} = pack;
-      return cells.p.map(([x, y], cellId) => {
-        const burgId = cells.burg[cellId];
-        if (burgId) return [burgs[burgId].x, burgs[burgId].y];
-        return [x, y];
-      });
-    }
-
-    function getPoints(group, cells, points) {
-      const data = cells.map(cellId => [...points[cellId], cellId]);
-
-      // resolve sharp angles
-      if (group !== "searoutes") {
-        for (let i = 1; i < cells.length - 1; i++) {
-          const cellId = cells[i];
-          if (pack.cells.burg[cellId]) continue;
-
-          const [prevX, prevY] = data[i - 1];
-          const [currX, currY] = data[i];
-          const [nextX, nextY] = data[i + 1];
-
-          const dAx = prevX - currX;
-          const dAy = prevY - currY;
-          const dBx = nextX - currX;
-          const dBy = nextY - currY;
-          const angle = Math.abs((Math.atan2(dAx * dBy - dAy * dBx, dAx * dBx + dAy * dBy) * 180) / Math.PI);
-
-          if (angle < ROUTES_SHARP_ANGLE) {
-            const middleX = (prevX + nextX) / 2;
-            const middleY = (prevY + nextY) / 2;
-            let newX, newY;
-
-            if (angle < ROUTES_VERY_SHARP_ANGLE) {
-              newX = rn((currX + middleX * 2) / 3, 2);
-              newY = rn((currY + middleY * 2) / 3, 2);
-            } else {
-              newX = rn((currX + middleX) / 2, 2);
-              newY = rn((currY + middleY) / 2, 2);
-            }
-
-            if (findCell(newX, newY) === cellId) {
-              data[i] = [newX, newY, cellId];
-              points[cellId] = [data[i][0], data[i][1]]; // change cell coordinate for all routes
-            }
-          }
-        }
-      }
-
-      return data; // [[x, y, cell], [x, y, cell]];
-    }
-
     function buildLinks(routes) {
       const links = {};
 
@@ -247,6 +195,58 @@ window.Routes = (function () {
     }
   }
 
+  function preparePointsArray() {
+    const {cells, burgs} = pack;
+    return cells.p.map(([x, y], cellId) => {
+      const burgId = cells.burg[cellId];
+      if (burgId) return [burgs[burgId].x, burgs[burgId].y];
+      return [x, y];
+    });
+  }
+
+  function getPoints(group, cells, points) {
+    const data = cells.map(cellId => [...points[cellId], cellId]);
+
+    // resolve sharp angles
+    if (group !== "searoutes") {
+      for (let i = 1; i < cells.length - 1; i++) {
+        const cellId = cells[i];
+        if (pack.cells.burg[cellId]) continue;
+
+        const [prevX, prevY] = data[i - 1];
+        const [currX, currY] = data[i];
+        const [nextX, nextY] = data[i + 1];
+
+        const dAx = prevX - currX;
+        const dAy = prevY - currY;
+        const dBx = nextX - currX;
+        const dBy = nextY - currY;
+        const angle = Math.abs((Math.atan2(dAx * dBy - dAy * dBx, dAx * dBx + dAy * dBy) * 180) / Math.PI);
+
+        if (angle < ROUTES_SHARP_ANGLE) {
+          const middleX = (prevX + nextX) / 2;
+          const middleY = (prevY + nextY) / 2;
+          let newX, newY;
+
+          if (angle < ROUTES_VERY_SHARP_ANGLE) {
+            newX = rn((currX + middleX * 2) / 3, 2);
+            newY = rn((currY + middleY * 2) / 3, 2);
+          } else {
+            newX = rn((currX + middleX) / 2, 2);
+            newY = rn((currY + middleY) / 2, 2);
+          }
+
+          if (findCell(newX, newY) === cellId) {
+            data[i] = [newX, newY, cellId];
+            points[cellId] = [data[i][0], data[i][1]]; // change cell coordinate for all routes
+          }
+        }
+      }
+    }
+
+    return data; // [[x, y, cell], [x, y, cell]];
+  }
+
   const MIN_PASSABLE_SEA_TEMP = -4;
   const TYPE_MODIFIERS = {
     "-1": 1, // coastline
@@ -418,6 +418,80 @@ window.Routes = (function () {
     return edges;
   }
 
+  // connect cell with routes system by land
+  function connect(cellId) {
+    if (isConnected(cellId)) return;
+
+    const {cells, routes} = pack;
+
+    const path = findConnectionPath(cellId);
+    if (!path) return;
+
+    const pathCells = restorePath(...path);
+    const pointsArray = preparePointsArray();
+    const points = getPoints("trails", pathCells, pointsArray);
+    const feature = cells.f[cellId];
+
+    const routeId = Math.max(...routes.map(route => route.i)) + 1;
+    const newRoute = {i: routeId, group: "trails", feature, points};
+    routes.push(newRoute);
+
+    for (let i = 0; i < pathCells.length; i++) {
+      const cellId = pathCells[i];
+      const nextCellId = pathCells[i + 1];
+      if (nextCellId) addConnection(cellId, nextCellId, routeId);
+    }
+
+    return newRoute;
+
+    function findConnectionPath(start) {
+      const from = [];
+      const cost = [];
+      const queue = new FlatQueue();
+      queue.push(start, 0);
+
+      while (queue.length) {
+        const priority = queue.peekValue();
+        const next = queue.pop();
+
+        for (const neibCellId of cells.c[next]) {
+          if (isConnected(neibCellId)) {
+            from[neibCellId] = next;
+            return [start, neibCellId, from];
+          }
+
+          if (cells.h[neibCellId] < 20) continue; // ignore water cells
+          const habitability = biomesData.habitability[cells.biome[neibCellId]];
+          if (!habitability) continue; // inhabitable cells are not passable (eg. lava, glacier)
+
+          const distanceCost = dist2(cells.p[next], cells.p[neibCellId]);
+          const habitabilityModifier = 1 + Math.max(100 - habitability, 0) / 1000; // [1, 1.1];
+          const heightModifier = 1 + Math.max(cells.h[neibCellId] - 25, 25) / 25; // [1, 3];
+
+          const cellsCost = distanceCost * habitabilityModifier * heightModifier;
+          const totalCost = priority + cellsCost;
+
+          if (totalCost >= cost[neibCellId]) continue;
+          from[neibCellId] = next;
+          cost[neibCellId] = totalCost;
+          queue.push(neibCellId, totalCost);
+        }
+      }
+
+      return null; // path is not found
+    }
+
+    function addConnection(from, to, routeId) {
+      const routes = pack.cells.routes;
+
+      if (!routes[from]) routes[from] = {};
+      routes[from][to] = routeId;
+
+      if (!routes[to]) routes[to] = {};
+      routes[to][from] = routeId;
+    }
+  }
+
   // utility functions
   function isConnected(cellId) {
     const {routes} = pack.cells;
@@ -610,6 +684,20 @@ window.Routes = (function () {
     }
   }
 
+  const ROUTE_CURVES = {
+    roads: d3.curveCatmullRom.alpha(0.1),
+    trails: d3.curveCatmullRom.alpha(0.1),
+    searoutes: d3.curveCatmullRom.alpha(0.5),
+    default: d3.curveCatmullRom.alpha(0.1)
+  };
+
+  function getPath({group, points}) {
+    const lineGen = d3.line();
+    lineGen.curve(ROUTE_CURVES[group] || ROUTE_CURVES.default);
+    const path = round(lineGen(points.map(p => [p[0], p[1]])), 1);
+    return path;
+  }
+
   function getLength(routeId) {
     const path = routes.select("#route" + routeId).node();
     return path.getTotalLength();
@@ -638,12 +726,14 @@ window.Routes = (function () {
 
   return {
     generate,
+    connect,
     isConnected,
     areConnected,
     getRoute,
     hasRoad,
     isCrossroad,
     generateName,
+    getPath,
     getLength,
     remove
   };

modules/ui/burgs-overview.js

@@ -279,7 +279,8 @@ function overviewBurgs(settings = {stateId: null, cultureId: null}) {
 
   function addBurgOnClick() {
     const point = d3.mouse(this);
-    const cell = findCell(point[0], point[1]);
+    const cell = findCell(...point);
+
     if (pack.cells.h[cell] < 20)
       return tip("You cannot place state into the water. Please click on a land cell", false, "error");
     if (pack.cells.burg[cell])

modules/ui/editors.js

@@ -132,27 +132,43 @@ function applySorting(headers) {
 }
 
 function addBurg(point) {
-  const cells = pack.cells;
-  const x = rn(point[0], 2),
-    y = rn(point[1], 2);
-  const cell = findCell(x, point[1]);
-  const i = pack.burgs.length;
-  const culture = cells.culture[cell];
-  const name = Names.getCulture(culture);
-  const state = cells.state[cell];
-  const feature = cells.f[cell];
+  const {cells, states} = pack;
+  const x = rn(point[0], 2);
+  const y = rn(point[1], 2);
 
-  const temple = pack.states[state].form === "Theocracy";
-  const population = Math.max(cells.s[cell] / 3 + i / 1000 + (cell % 100) / 1000, 0.1);
-  const type = BurgsAndStates.getType(cell, false);
+  const cellId = findCell(x, y);
+  const i = pack.burgs.length;
+  const culture = cells.culture[cellId];
+  const name = Names.getCulture(culture);
+  const state = cells.state[cellId];
+  const feature = cells.f[cellId];
+
+  const population = Math.max(cells.s[cellId] / 3 + i / 1000 + (cellId % 100) / 1000, 0.1);
+  const type = BurgsAndStates.getType(cellId, false);
 
   // generate emblem
-  const coa = COA.generate(pack.states[state].coa, 0.25, null, type);
+  const coa = COA.generate(states[state].coa, 0.25, null, type);
   coa.shield = COA.getShield(culture, state);
   COArenderer.add("burg", i, coa, x, y);
 
-  pack.burgs.push({name, cell, x, y, state, i, culture, feature, capital: 0, port: 0, temple, population, coa, type});
-  cells.burg[cell] = i;
+  const burg = {
+    name,
+    cell: cellId,
+    x,
+    y,
+    state,
+    i,
+    culture,
+    feature,
+    capital: 0,
+    port: 0,
+    temple: 0,
+    population,
+    coa,
+    type
+  };
+  pack.burgs.push(burg);
+  cells.burg[cellId] = i;
 
   const townSize = burgIcons.select("#towns").attr("size") || 0.5;
   burgIcons
@@ -173,7 +189,17 @@ function addBurg(point) {
     .attr("dy", `${townSize * -1.5}px`)
     .text(name);
 
-  BurgsAndStates.defineBurgFeatures(pack.burgs[i]);
+  BurgsAndStates.defineBurgFeatures(burg);
+
+  const newRoute = Routes.connect(cellId);
+  if (newRoute && layerIsOn("toggleRoutes")) {
+    routes
+      .select("#" + newRoute.group)
+      .append("path")
+      .attr("d", Routes.getPath(newRoute))
+      .attr("id", "route" + newRoute.i);
+  }
+
   return i;
 }
 

modules/ui/layers.js

@@ -1631,26 +1631,14 @@ function toggleRoutes(event) {
   }
 }
 
-const ROUTE_CURVES = {
-  roads: d3.curveCatmullRom.alpha(0.1),
-  trails: d3.curveCatmullRom.alpha(0.1),
-  searoutes: d3.curveCatmullRom.alpha(0.5),
-  default: d3.curveCatmullRom.alpha(0.1)
-};
-
 function drawRoutes() {
   TIME && console.time("drawRoutes");
   const routePaths = {};
-  const lineGen = d3.line();
 
   for (const route of pack.routes) {
     const {i, group} = route;
-    lineGen.curve(ROUTE_CURVES[group] || ROUTE_CURVES.default);
-    const points = route.points.map(p => [p[0], p[1]]);
-    const path = round(lineGen(points), 1);
-
     if (!routePaths[group]) routePaths[group] = [];
-    routePaths[group].push(`<path id="route${i}" d="${path}"/>`);
+    routePaths[group].push(`<path id="route${i}" d="${Routes.getPath(route)}"/>`);
   }
 
   routes.selectAll("path").remove();

modules/ui/routes-creator.js

@@ -84,15 +84,12 @@ function createRoute(defaultGroup) {
       .attr("r", 0.6);
 
     const group = byId("routeCreatorGroupSelect").value;
-    const lineGen = d3.line();
-    lineGen.curve(ROUTE_CURVES[group] || ROUTE_CURVES.default);
-    const path = round(lineGen(points), 1);
 
     routes.select("#routeTemp").remove();
     routes
       .select("#" + group)
       .append("path")
-      .attr("d", path)
+      .attr("d", Routes.getPath({group, points}))
       .attr("id", "routeTemp");
   }
 

modules/ui/routes-editor.js

@@ -134,13 +134,7 @@ function editRoute(id) {
   }
 
   function redrawRoute(route) {
-    const lineGen = d3.line();
-    lineGen.curve(ROUTE_CURVES[route.group] || ROUTE_CURVES.default);
-
-    const points = route.points.map(p => [p[0], p[1]]);
-    const path = round(lineGen(points), 1);
-    elSelected.attr("d", path);
-
+    elSelected.attr("d", Routes.getPath(route));
     updateRouteLength(route);
     if (byId("elevationProfile").offsetParent) showRouteElevationProfile();
   }