Fixed #3062 / Fixed #3064

core/src/mindustry/world/blocks/distribution/Conveyor.java

@@ -67,7 +67,7 @@ public class Conveyor extends Block implements Autotiler{
 
     @Override
     public boolean blends(Tile tile, int rotation, int otherx, int othery, int otherrot, Block otherblock){
-        return (otherblock.outputsItems() || lookingAt(tile, rotation, otherx, othery, otherblock))
+        return (otherblock.outputsItems() || (lookingAt(tile, rotation, otherx, othery, otherblock) && otherblock.hasItems))
             && lookingAtEither(tile, rotation, otherx, othery, otherrot, otherblock);
     }
 

core/src/mindustry/world/blocks/distribution/MassDriver.java

@@ -105,6 +105,10 @@ public class MassDriver extends Block{
             Building link = world.build(this.link);
             boolean hasLink = linkValid();
 
+            if(hasLink){
+                this.link = link.pos();
+            }
+
             //reload regardless of state
             if(reload > 0f){
                 reload = Mathf.clamp(reload - edelta() / reloadTime);

core/src/mindustry/world/blocks/storage/StorageBlock.java

@@ -11,6 +11,7 @@ import mindustry.world.blocks.storage.CoreBlock.*;
 import mindustry.world.meta.*;
 
 public class StorageBlock extends Block{
+
     public StorageBlock(String name){
         super(name);
         hasItems = true;

core/src/mindustry/world/meta/BlockFlag.java

@@ -4,6 +4,8 @@ package mindustry.world.meta;
 public enum BlockFlag{
     /** Enemy core; primary target for all units. */
     core,
+    /** Vault/container/etc */
+    storage,
     /** Something that generates power. */
     generator,
     /** Any turret. */