From adb9a82d84601265b26ee0f1435e72c5d983ca94 Mon Sep 17 00:00:00 2001
From: Anuken <arnukren@gmail.com>
Date: Wed, 25 Feb 2026 23:11:20 -0500
Subject: [PATCH] Fixed Ground Zero being land-able with IPA, leading to buggy
 behavior

---
 core/src/mindustry/content/SectorPresets.java   | 1 -
 core/src/mindustry/content/SerpuloTechTree.java | 1 +
 core/src/mindustry/ui/dialogs/PlanetDialog.java | 5 ++++-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/core/src/mindustry/content/SectorPresets.java b/core/src/mindustry/content/SectorPresets.java
index 8db657966d..1ea6020a54 100644
--- a/core/src/mindustry/content/SectorPresets.java
+++ b/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;
         }};
diff --git a/core/src/mindustry/content/SerpuloTechTree.java b/core/src/mindustry/content/SerpuloTechTree.java
index cd003c8fa4..f2da02df45 100644
--- a/core/src/mindustry/content/SerpuloTechTree.java
+++ b/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),
diff --git a/core/src/mindustry/ui/dialogs/PlanetDialog.java b/core/src/mindustry/ui/dialogs/PlanetDialog.java
index c252d74b6c..64996220b4 100644
--- a/core/src/mindustry/ui/dialogs/PlanetDialog.java
+++ b/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;