feat: configurable longitude

modules/io/load.js

@@ -242,6 +242,7 @@ async function parseLoadedData(data, mapVersion) {
       if (settings[22]) stylePreset.value = settings[22];
       if (settings[23]) rescaleLabels.checked = +settings[23];
       if (settings[24]) urbanDensity = urbanDensityInput.value = urbanDensityOutput.value = +settings[24];
+      if (settings[25]) longitudeInput.value = longitudeOutput.value = minmax(settings[25] || 50, 0, 100);
     })();
 
     void (function applyOptionsToUI() {

modules/io/save.js

@@ -67,7 +67,8 @@ function prepareMapData() {
     +hideLabels.checked,
     stylePreset.value,
     +rescaleLabels.checked,
-    urbanDensity
+    urbanDensity,
+    longitudeOutput.value
   ].join("|");
   const coords = JSON.stringify(mapCoordinates);
   const biomes = [biomesData.color, biomesData.habitability, biomesData.name].join("|");