diff --git a/core/src/mindustry/ai/WaveSpawner.java b/core/src/mindustry/ai/WaveSpawner.java
index 417909a92b..9cecf32ac1 100644
--- a/core/src/mindustry/ai/WaveSpawner.java
+++ b/core/src/mindustry/ai/WaveSpawner.java
@@ -77,14 +77,18 @@ public class WaveSpawner{
 
         eachGroundSpawn((spawnX, spawnY, doShockwave) -> {
             if(doShockwave){
-                Time.run(20f, () -> Fx.spawnShockwave.at(spawnX, spawnY, state.rules.dropZoneRadius));
-                Time.run(40f, () -> Damage.damage(state.rules.waveTeam, spawnX, spawnY, state.rules.dropZoneRadius, 99999999f, true));
+                doShockwave(spawnX, spawnY);
             }
         });
 
         Time.runTask(121f, () -> spawning = false);
     }
 
+    public void doShockwave(float x, float y){
+        Time.run(20f, () -> Fx.spawnShockwave.at(x, y, state.rules.dropZoneRadius));
+        Time.run(40f, () -> Damage.damage(state.rules.waveTeam, x, y, state.rules.dropZoneRadius, 99999999f, true));
+    }
+
     private void eachGroundSpawn(SpawnConsumer cons){
         for(Tile spawn : spawns){
             cons.accept(spawn.worldx(), spawn.worldy(), true);
diff --git a/core/src/mindustry/entities/comp/BuilderComp.java b/core/src/mindustry/entities/comp/BuilderComp.java
index d57b1b5b6d..0aafd4d0c0 100644
--- a/core/src/mindustry/entities/comp/BuilderComp.java
+++ b/core/src/mindustry/entities/comp/BuilderComp.java
@@ -116,7 +116,6 @@ abstract class BuilderComp implements Unitc{
         current.progress = entity.progress;
     }
 
-
     /** Draw all current build requests. Does not draw the beam effect, only the positions. */
     void drawBuildRequests(){
 
diff --git a/core/src/mindustry/ui/fragments/HudFragment.java b/core/src/mindustry/ui/fragments/HudFragment.java
index 4f289f9293..f56d507c4d 100644
--- a/core/src/mindustry/ui/fragments/HudFragment.java
+++ b/core/src/mindustry/ui/fragments/HudFragment.java
@@ -84,20 +84,6 @@ public class HudFragment extends Fragment{
             coreItems.clear();
         });
 
-        Events.on(TurnEvent.class, e -> {
-            Seq<Sector> attacked = universe.getAttacked(state.getSector().planet);
-
-            if(attacked.any()){
-
-                //TODO localize
-                String text = attacked.size > 1 ? attacked.size + " sectors attacked." : "Sector " + attacked.first().id + " under attack.";
-
-                showToast(Icon.warning, text);
-            }
-
-            //ui.announce("[accent][[ Turn " + universe.turn() + " ]\n[scarlet]" + attackedSectors.size + "[lightgray] sector(s) attacked.");
-        });
-
         //paused table
         parent.fill(t -> {
             t.name = "paused";
diff --git a/core/src/mindustry/world/blocks/storage/CoreBlock.java b/core/src/mindustry/world/blocks/storage/CoreBlock.java
index 8d656a95d2..bdb16eb674 100644
--- a/core/src/mindustry/world/blocks/storage/CoreBlock.java
+++ b/core/src/mindustry/world/blocks/storage/CoreBlock.java
@@ -310,6 +310,22 @@ public class CoreBlock extends StorageBlock{
             }
         }
 
+        @Override
+        public void onDestroyed(){
+            super.onDestroyed();
+
+            if(state.isCampaign() && team == state.rules.waveTeam){
+                //do not recache
+                world.setGenerating(true);
+                tile.setOverlay(Blocks.spawn);
+                world.setGenerating(false);
+
+                if(!spawner.getSpawns().contains(tile)){
+                    spawner.getSpawns().add(tile);
+                }
+                spawner.doShockwave(x, y);
+            }
+        }
 
         @Override
         public void placed(){