resource units

data/resources.js

@@ -535,7 +535,7 @@ window.FMG.data.resourceModels = {
   Marine_and_rivers: 'shore(-1) && (type("ocean", "freshwater", "salt") || (river() && shore(1, 2)))',
   Pastures_and_temperate_forest: '(biome(3, 4) && !elevation()) || (biome(6) && random(70)) || (biome(5) && nth(5))',
   Tropical_forests: 'biome(5, 7)',
-  Arid_land_and_salt_lakes: 'type("salt", "dry") || (biome(1, 2) && random(70)) || (biome(12) && nth(10))',
+  Arid_land_and_salt_lakes: 'shore(1) && type("salt", "dry") || (biome(1, 2) && random(70)) || (biome(12) && nth(10))',
   Hot_desert: 'biome(1)',
   Deserts: 'biome(1, 2)',
   Grassland_and_cold_desert: 'biome(3) || (biome(2) && nth(4))',

index.html

@@ -2036,6 +2036,16 @@
             <span id="burgExport"></span>
           </div>
 
+          <div data-tip="Burg monthly import (goods purchased)">
+            <div class="label">Import:</div>
+            <span id="burgImport"></span>
+          </div>
+
+          <div data-tip="Burg montly goods consumption">
+            <div class="label">Consumption:</div>
+            <span id="burgConsumption"></span>
+          </div>
+
           <div data-tip="Burg mean annual temperature and real-world city for comparison">
             <div class="label">Temperature:</div>
             <span id="burgTemperature"></span>, like in 

main.js

@@ -654,6 +654,7 @@ function generate() {
     BurgsAndStates.defineStateForms();
 
     Production.collectResources();
+    Production.defineExport();
 
     BurgsAndStates.generateProvinces();
     BurgsAndStates.defineBurgFeatures();

modules/production-generator.js

@@ -110,5 +110,24 @@ window.Production = (function () {
     }
   };
 
-  return {collectResources};
+  const defineExport = () => {
+    const {cells, burgs} = pack;
+
+    for (const burg of burgs) {
+      if (!burg.i || burg.removed) continue;
+      const {population, production: resourcePool} = burg;
+      const localUsage = Math.ceil(population);
+
+      const surplus = {};
+      for (const resourceId in resourcePool) {
+        const production = resourcePool[resourceId];
+        const extraProduction = production - localUsage;
+        if (extraProduction > 0) surplus[resourceId] = extraProduction;
+      }
+
+      burg.export = surplus;
+    }
+  };
+
+  return {collectResources, defineExport};
 })();

modules/ui/burg-editor.js

@@ -98,17 +98,8 @@ function editBurg(id) {
     else document.getElementById('burgShanty').classList.add('inactive');
 
     // economics block
-    let productionHTML = '';
+    document.getElementById('burgProduction').innerHTML = getProduction(b.production);
-    for (const resourceId in b.production) {
+    document.getElementById('burgExport').innerHTML = getProduction(b.export);
-      const {name, unit, icon} = Resources.get(+resourceId);
-      const production = b.production[resourceId];
-      const unitName = production > 1 ? unit + 's' : unit;
-      productionHTML += `<span data-tip="${name}: ${production} ${unitName}">
-        <svg class="resIcon"><use href="#${icon}"></svg>
-        <span style="margin: 0 0.2em 0 -0.2em">${production}</span>
-      </span>`;
-    }
-    document.getElementById('burgProduction').innerHTML = productionHTML;
 
     //toggle lock
     updateBurgLockIcon();
@@ -128,6 +119,23 @@ function editBurg(id) {
     document.getElementById('burgEmblem').setAttribute('href', '#' + coaID);
   }
 
+  function getProduction(resources) {
+    let html = '';
+
+    for (const resourceId in resources) {
+      const {name, unit, icon} = Resources.get(+resourceId);
+      const production = resources[resourceId];
+      const unitName = production > 1 ? unit + 's' : unit;
+
+      html += `<span data-tip="${name}: ${production} ${unitName}">
+        <svg class="resIcon"><use href="#${icon}"></svg>
+        <span style="margin: 0 0.2em 0 -0.2em">${production}</span>
+      </span>`;
+    }
+
+    return html;
+  }
+
   // [-1; 31] °C, source: https://en.wikipedia.org/wiki/List_of_cities_by_average_temperature
   function getTemperatureLikeness(temperature) {
     if (temperature < -15) return 'nowhere in the real-world';