WIP launch pad rework

core/src/mindustry/world/blocks/campaign/LandingPad.java

@@ -0,0 +1,70 @@
+package mindustry.world.blocks.campaign;
+
+import arc.util.*;
+import arc.util.io.*;
+import mindustry.gen.*;
+import mindustry.io.*;
+import mindustry.type.*;
+import mindustry.world.*;
+
+public class LandingPad extends Block{
+
+    public LandingPad(String name){
+        super(name);
+
+        hasItems = true;
+        solid = true;
+        update = true;
+        configurable = true;
+        acceptsItems = false;
+
+        config(Item.class, (LandingPadBuild build, Item item) -> build.config = item);
+        configClear((LandingPadBuild build) -> build.config = null);
+    }
+
+    @Override
+    public boolean outputsItems(){
+        return true;
+    }
+
+    public class LandingPadBuild extends Building{
+        public @Nullable Item config;
+
+        @Override
+        public void updateTile(){
+            if(items.total() > 0){
+                dumpAccumulate(config == null || items.get(config) != items.total() ? null : config);
+            }
+        }
+
+        @Override
+        public boolean canDump(Building to, Item item){
+            //hack: canDump is only ever called right before item offload, so count the item as "produced" before that.
+            //TODO: is this necessary?
+            produced(item);
+            return true;
+        }
+
+        @Override
+        public boolean acceptItem(Building source, Item item){
+            return false;
+        }
+
+        @Override
+        public @Nullable Object config(){
+            return config;
+        }
+
+        @Override
+        public void read(Reads read, byte revision){
+            super.read(read, revision);
+            config = TypeIO.readItem(read);
+        }
+
+        @Override
+        public void write(Writes write){
+            super.write(write);
+            TypeIO.writeItem(write, config);
+        }
+    }
+}

core/src/mindustry/world/blocks/campaign/LaunchPad.java

@@ -27,13 +27,14 @@ import mindustry.world.meta.*;
 import static mindustry.Vars.*;
 
 public class LaunchPad extends Block{
-    /** Time inbetween launches. */
+    /** Time between launches. */
     public float launchTime = 1f;
     public Sound launchSound = Sounds.none;
 
     public @Load("@-light") TextureRegion lightRegion;
     public @Load(value = "@-pod", fallback = "launchpod") TextureRegion podRegion;
     public Color lightColor = Color.valueOf("eab678");
+    public boolean acceptMultipleItems = false;
 
     public LaunchPad(String name){
         super(name);
@@ -116,7 +117,7 @@ public class LaunchPad extends Block{
 
         @Override
         public boolean acceptItem(Building source, Item item){
-            return items.total() < itemCapacity;
+            return items.total() < itemCapacity && (acceptMultipleItems || items.total() == 0 || items.first() == item);
         }
 
         @Override
@@ -159,7 +160,8 @@ public class LaunchPad extends Block{
 
         @Override
         public void buildConfiguration(Table table){
-            if(!state.isCampaign() || net.client()){
+            //TODO: this UI should be on landing pads
+            if(!state.isCampaign() || net.client() || true){
                 deselect();
                 return;
             }