deselectable content selection UI (#6205)

core/src/mindustry/content/Blocks.java

@@ -2163,14 +2163,12 @@ public class Blocks implements ContentList{
             requirements(Category.units, BuildVisibility.sandboxOnly, with());
             size = 5;
             alwaysUnlocked = true;
-            group = BlockGroup.units;
         }};
 
         payloadVoid = new PayloadVoid("payload-void"){{
             requirements(Category.units, BuildVisibility.sandboxOnly, with());
             size = 5;
             alwaysUnlocked = true;
-            group = BlockGroup.units;
         }};
 
         //TODO move

core/src/mindustry/world/blocks/payloads/Constructor.java

@@ -6,6 +6,7 @@ import arc.scene.ui.layout.*;
 import arc.util.*;
 import arc.util.io.*;
 import mindustry.*;
+import mindustry.gen.*;
 import mindustry.world.*;
 import mindustry.world.blocks.*;
 import mindustry.world.blocks.storage.*;
@@ -57,6 +58,17 @@ public class Constructor extends BlockProducer{
             ItemSelection.buildTable(table, content.blocks().select(Constructor.this::canProduce), () -> recipe, this::configure);
         }
 
+        @Override
+        public boolean onConfigureTileTapped(Building other){
+            if(this == other){
+                deselect();
+                configure(null);
+                return false;
+            }
+
+            return true;
+        }
+
         @Override
         public Object config(){
             return recipe;

core/src/mindustry/world/blocks/payloads/PayloadSource.java

@@ -91,6 +91,17 @@ public class PayloadSource extends PayloadBlock{
             () -> (UnlockableContent)config(), this::configure);
         }
 
+        @Override
+        public boolean onConfigureTileTapped(Building other){
+            if(this == other){
+                deselect();
+                configure(null);
+                return false;
+            }
+
+            return true;
+        }
+
         @Override
         public Object config(){
             return unit == null ? block : unit;

core/src/mindustry/world/blocks/units/UnitFactory.java

@@ -166,6 +166,17 @@ public class UnitFactory extends UnitBlock{
             }
         }
 
+        @Override
+        public boolean onConfigureTileTapped(Building other){
+            if(this == other){
+                deselect();
+                configure(null);
+                return false;
+            }
+
+            return true;
+        }
+
         @Override
         public boolean acceptPayload(Building source, Payload payload){
             return false;