Implemented various suggestions

- Pathfinding weighs walls more
- C disables all HUD
- Unloader doesn't store items
- Some bugfixes

core/src/mindustry/world/modules/ItemModule.java

@@ -160,6 +160,25 @@ public class ItemModule extends BlockModule{
         return null;
     }
 
+    /** Begins a speculative take operation. This returns the item that would be returned by #take(), but does not change state. */
+    public Item beginTake(){
+        for(int i = 0; i < items.length; i++){
+            int index = (i + takeRotation);
+            if(index >= items.length) index -= items.length;
+            if(items[index] > 0){
+                return content.item(index);
+            }
+        }
+        return null;
+    }
+
+    /** Finishes a take operation. Updates take state, removes the item. */
+    public void endTake(Item item){
+        items[item.id] --;
+        total --;
+        takeRotation = item.id + 1;
+    }
+
     public int get(int id){
         return items[id];
     }