Fixed waves appearing on Erekir

core/src/mindustry/maps/generators/FileMapGenerator.java

@@ -48,6 +48,11 @@ public class FileMapGenerator implements WorldGenerator{
                 applyFilters();
                 //no super.end(), don't call world load event twice
             }
+
+            @Override
+            public boolean isMap(){
+                return true;
+            }
         });
         world.setGenerating(true);