Put zone previews into atlas

core/src/io/anuke/mindustry/maps/MapPreviewLoader.java

@@ -3,8 +3,10 @@ package io.anuke.mindustry.maps;
 import io.anuke.arc.assets.*;
 import io.anuke.arc.assets.loaders.*;
 import io.anuke.arc.assets.loaders.resolvers.*;
+import io.anuke.arc.collection.*;
 import io.anuke.arc.files.*;
 import io.anuke.mindustry.*;
+import io.anuke.mindustry.game.*;
 
 public class MapPreviewLoader extends TextureLoader{
 
@@ -23,6 +25,11 @@ public class MapPreviewLoader extends TextureLoader{
         }
     }
 
+    @Override
+    public Array<AssetDescriptor> getDependencies(String fileName, FileHandle file, TextureParameter parameter){
+        return Array.with(new AssetDescriptor<>("contentcreate", Content.class));
+    }
+
     public static class MapPreviewParameter extends TextureParameter{
         public Map map;
 

core/src/io/anuke/mindustry/maps/Maps.java

@@ -323,8 +323,6 @@ public class Maps{
             }catch(Exception ignored){
             }
         }
-
-
     }
 
     public void createNewPreview(Map map){