Fixed Ground Zero being land-able with IPA, leading to buggy behavior

core/src/mindustry/content/SectorPresets.java

@@ -177,7 +177,6 @@ public class SectorPresets{
         //region erekir
 
         onset = new SectorPreset("onset", erekir, 10){{
-            addStartingItems = true;
             alwaysUnlocked = true;
             difficulty = 1;
         }};

core/src/mindustry/content/SerpuloTechTree.java

@@ -508,6 +508,7 @@ public class SerpuloTechTree{
                                                 new SectorComplete(overgrowth),
                                                 new SectorComplete(extractionOutpost),
                                                 new SectorComplete(saltFlats),
+                                                new SectorComplete(mycelialBastion),
                                                 new Research(risso),
                                                 new Research(minke),
                                                 new Research(bryde),

core/src/mindustry/ui/dialogs/PlanetDialog.java

@@ -414,7 +414,10 @@ public class PlanetDialog extends BaseDialog implements PlanetInterfaceRenderer{
     boolean canSelect(Sector sector){
         if(mode == select) return sector.hasBase() && launchSector != null && sector.planet == launchSector.planet;
 
-        if(mode == planetLaunch && sector.hasBase()) return false;
+        //sectors with addStartingItems = true can't be landed on, as they override the core and items of the interplanetary accelerator
+        //at the moment, this is only true of Ground Zero in vanilla
+        //TODO: maybe relax these restrictions and add better support for these sorts of "tutorial" starting sectors later
+        if(mode == planetLaunch && (sector.hasBase() || (sector.preset != null && sector.preset.addStartingItems))) return false;
 
         if(sector.planet.generator == null) return false;