Proper interplanetary launch

core/src/mindustry/content/ErekirTechTree.java

@@ -16,6 +16,7 @@ public class ErekirTechTree{
         var costMultipliers = new ObjectFloatMap<Item>();
         costMultipliers.put(Items.silicon, 7);
         costMultipliers.put(Items.surgeAlloy, 4);
+        costMultipliers.put(Items.phaseFabric, 4);
         costMultipliers.put(Items.thorium, 8);
         costMultipliers.put(Items.graphite, 6);
 

core/src/mindustry/content/Items.java

@@ -1,6 +1,7 @@
 package mindustry.content;
 
 import arc.graphics.*;
+import arc.struct.*;
 import mindustry.type.*;
 
 public class Items{
@@ -9,6 +10,9 @@ public class Items{
     phaseFabric, surgeAlloy, sporePod, sand, blastCompound, pyratite, metaglass,
     beryllium, tungsten, oxide, carbide, fissileMatter, dormantCyst;
 
+    //TODO remove, these are for debugging only
+    public static final Seq<Item> serpuloItems = new Seq<>(), erekirItems = new Seq<>();
+
     public static void load(){
         copper = new Item("copper", Color.valueOf("d99d73")){{
             hardness = 1;
@@ -124,5 +128,15 @@ public class Items{
         dormantCyst = new Item("dormant-cyst", Color.valueOf("df824d")){{
             flammability = 0.1f;
         }};
+
+        serpuloItems.addAll(
+        scrap, copper, lead, graphite, coal, titanium, thorium, silicon, plastanium,
+        phaseFabric, surgeAlloy, sporePod, sand, blastCompound, pyratite, metaglass
+        );
+
+        erekirItems.addAll(
+        scrap, graphite, thorium, silicon, phaseFabric, surgeAlloy, sand,
+        beryllium, tungsten, oxide, carbide, fissileMatter, dormantCyst
+        );
     }
 }

core/src/mindustry/content/TechTree.java

@@ -1,6 +1,7 @@
 package mindustry.content;
 
 import arc.*;
+import arc.func.*;
 import arc.scene.style.*;
 import arc.struct.*;
 import arc.util.*;
@@ -140,6 +141,14 @@ public class TechTree{
             all.add(this);
         }
 
+        /** Recursively iterates through everything that is a child of this node. Includes itself. */
+        public void each(Cons<TechNode> consumer){
+            consumer.get(this);
+            for(var child : children){
+                child.each(consumer);
+            }
+        }
+
         public Drawable icon(){
             return icon == null ? new TextureRegionDrawable(content.uiIcon) : icon;
         }