Add default dimension type and prevent duplicates

js/view.js

@@ -1,6 +1,8 @@
 
 const themes = ["light", "dark"];
 
+let preventDuplicateDimensionType = [false, false, false, false];
+
 themes.forEach(v => $('#themeList').append(`<a class="dropdown-item" onclick="changeTheme('${v}')" data-i18n="theme.${v}"></a>`));
 
 addListener(updateView);
@@ -205,7 +207,28 @@ function generateEnum(data, struct) {
   if (struct.help) {
     $el.append(generateTooltip(struct.translateValue + '.' + data.replace(/.*:/, '')));
   }
-  return {out: data, component: $el};
+  let out = data;
+  if (struct.translate === 'dimension.type') {
+    const i = struct.values.indexOf(data)
+    if (i !== -1 ) {
+      if (preventDuplicateDimensionType[i]) {
+        data = 'minecraft:default';
+      } else {
+        preventDuplicateDimensionType[i] = true;
+      }
+    }
+    if (data === 'minecraft:default') {
+      out = {
+        "ultrawarm": false,
+        "natural": true,
+        "shrunk": false,
+        "ambient_light": 0,
+        "has_skylight": true,
+        "has_ceiling": false
+      };
+    }
+  }
+  return {out: out, component: $el};
 }
 
 function generateSet(data, struct) {

locales/en.json

@@ -176,6 +176,10 @@
     "dimension.type.fixed_time": "Fixed Time",
     "dimension.type.has_skylight": "Has Skylight",
     "dimension.type.has_ceiling": "Has Ceiling",
+    "dimension.type.presets.default": "Default",
+    "dimension.type.presets.overworld": "Overworld",
+    "dimension.type.presets.the_nether": "The Nether",
+    "dimension.type.presets.the_end": "The End",
     "display": "Display",
     "display.icon": "Icon",
     "display.icon.item": "Icon Item",

schemas/worldgen.json

@@ -463,12 +463,13 @@
         {
           "id": "type",
           "translate": "dimension.type",
-          "translateValue": "dimension",
+          "translateValue": "dimension.type.presets",
           "type": "object",
           "color": "dark",
           "collapse": true,
-          "default": "minecraft:overworld",
+          "default": "minecraft:default",
           "values": [
+            "minecraft:default",
             "minecraft:overworld",
             "minecraft:the_nether",
             "minecraft:the_end"
@@ -498,7 +499,7 @@
               "id": "ambient_light",
               "translate": "dimension.type.ambient_light",
               "type": "float",
-              "default": 0.5
+              "default": 0
             },
             {
               "id": "fixed_time",