diff --git a/core/src/mindustry/ai/Pathfinder.java b/core/src/mindustry/ai/Pathfinder.java
index 33f4797467..92380b1e9d 100644
--- a/core/src/mindustry/ai/Pathfinder.java
+++ b/core/src/mindustry/ai/Pathfinder.java
@@ -216,7 +216,7 @@ public class Pathfinder implements Runnable{
             //add targets
             for(int i = 0; i < path.targets.size; i++){
                 int pos = path.targets.get(i);
-                int tx = Pos.x(pos), ty = Pos.y(pos);
+                int tx = Point2.x(pos), ty = Point2.y(pos);
 
                 path.weights[tx][ty] = 0;
                 path.searches[tx][ty] = (short)path.search;
@@ -253,7 +253,7 @@ public class Pathfinder implements Runnable{
         //add targets
         for(int i = 0; i < path.targets.size; i++){
             int pos = path.targets.get(i);
-            path.weights[Pos.x(pos)][Pos.y(pos)] = 0;
+            path.weights[Point2.x(pos)][Point2.y(pos)] = 0;
             path.frontier.addFirst(pos);
         }
 
@@ -283,7 +283,7 @@ public class Pathfinder implements Runnable{
 
                     if(other != null && (path.weights[dx][dy] > cost + other.cost || path.searches[dx][dy] < path.search) && passable(dx, dy, path.team)){
                         if(other.cost < 0) throw new IllegalArgumentException("Tile cost cannot be negative! " + other);
-                        path.frontier.addFirst(Pos.get(dx, dy));
+                        path.frontier.addFirst(Point2.pack(dx, dy));
                         path.weights[dx][dy] = cost + other.cost;
                         path.searches[dx][dy] = (short)path.search;
                     }
diff --git a/core/src/mindustry/core/World.java b/core/src/mindustry/core/World.java
index edb83303b5..8c73372da5 100644
--- a/core/src/mindustry/core/World.java
+++ b/core/src/mindustry/core/World.java
@@ -86,7 +86,7 @@ public class World{
 
     public @Nullable
     Tile tile(int pos){
-        return tiles == null ? null : tile(Pos.x(pos), Pos.y(pos));
+        return tiles == null ? null : tile(Point2.x(pos), Point2.y(pos));
     }
 
     public @Nullable Tile tile(int x, int y){
@@ -396,8 +396,8 @@ public class World{
         for(int i = 0; i < multiblocks.size; i++){
             int pos = multiblocks.get(i);
 
-            int x = Pos.x(pos);
-            int y = Pos.y(pos);
+            int x = Point2.x(pos);
+            int y = Point2.y(pos);
             Tile tile = tiles.getn(x, y);
 
             Block result = tile.block();
diff --git a/core/src/mindustry/editor/EditorTool.java b/core/src/mindustry/editor/EditorTool.java
index e591aa5eb3..8f0e935b94 100644
--- a/core/src/mindustry/editor/EditorTool.java
+++ b/core/src/mindustry/editor/EditorTool.java
@@ -164,13 +164,13 @@ public enum EditorTool{
                 int x1;
 
                 stack.clear();
-                stack.add(Pos.get(x, y));
+                stack.add(Point2.pack(x, y));
 
                 try{
                     while(stack.size > 0 && stack.size < width*height){
                         int popped = stack.pop();
-                        x = Pos.x(popped);
-                        y = Pos.y(popped);
+                        x = Point2.x(popped);
+                        y = Point2.y(popped);
 
                         x1 = x;
                         while(x1 >= 0 && tester.get(editor.tile(x1, y))) x1--;
@@ -180,14 +180,14 @@ public enum EditorTool{
                             filler.get(editor.tile(x1, y));
 
                             if(!spanAbove && y > 0 && tester.get(editor.tile(x1, y - 1))){
-                                stack.add(Pos.get(x1, y - 1));
+                                stack.add(Point2.pack(x1, y - 1));
                                 spanAbove = true;
                             }else if(spanAbove && !tester.get(editor.tile(x1, y - 1))){
                                 spanAbove = false;
                             }
 
                             if(!spanBelow && y < height - 1 && tester.get(editor.tile(x1, y + 1))){
-                                stack.add(Pos.get(x1, y + 1));
+                                stack.add(Point2.pack(x1, y + 1));
                                 spanBelow = true;
                             }else if(spanBelow && y < height - 1 && !tester.get(editor.tile(x1, y + 1))){
                                 spanBelow = false;
diff --git a/core/src/mindustry/entities/Fires.java b/core/src/mindustry/entities/Fires.java
index 4a85723cc0..a5577c2027 100644
--- a/core/src/mindustry/entities/Fires.java
+++ b/core/src/mindustry/entities/Fires.java
@@ -1,6 +1,7 @@
 package mindustry.entities;
 
 import arc.*;
+import arc.math.geom.*;
 import arc.struct.*;
 import arc.util.*;
 import mindustry.content.*;
@@ -34,14 +35,14 @@ public class Fires{
     }
 
     public static Firec get(int x, int y){
-        return map.get(Pos.get(x, y));
+        return map.get(Point2.pack(x, y));
     }
 
     public static boolean has(int x, int y){
-        if(!Structs.inBounds(x, y, world.width(), world.height()) || !map.containsKey(Pos.get(x, y))){
+        if(!Structs.inBounds(x, y, world.width(), world.height()) || !map.containsKey(Point2.pack(x, y))){
             return false;
         }
-        Firec fire = map.get(Pos.get(x, y));
+        Firec fire = map.get(Point2.pack(x, y));
         return fire.isAdded() && fire.fin() < 1f && fire.tile() != null && fire.tile().x == x && fire.tile().y == y;
     }
 
diff --git a/core/src/mindustry/entities/def/TileComp.java b/core/src/mindustry/entities/def/TileComp.java
index 58f7f15956..bceccf9f56 100644
--- a/core/src/mindustry/entities/def/TileComp.java
+++ b/core/src/mindustry/entities/def/TileComp.java
@@ -233,15 +233,12 @@ abstract class TileComp implements Posc, Teamc, Healthc, Tilec, Timerc{
     }
 
     /** Tile configuration. Defaults to null. Used for block rebuilding. */
+    @Nullable
+    @Override
     public Object config(){
         return null;
     }
 
-    /** Sets the config object and casts it. Does nothing by default. */
-    public void setConfig(Object config){
-
-    }
-
     @Override
     public void remove(){
         if(sound != null){
diff --git a/core/src/mindustry/entities/units/BuildRequest.java b/core/src/mindustry/entities/units/BuildRequest.java
index 64629a2143..621871efb7 100644
--- a/core/src/mindustry/entities/units/BuildRequest.java
+++ b/core/src/mindustry/entities/units/BuildRequest.java
@@ -1,5 +1,6 @@
 package mindustry.entities.units;
 
+import arc.func.*;
 import arc.math.geom.*;
 import arc.util.ArcAnnotate.*;
 import mindustry.world.*;
@@ -51,6 +52,28 @@ public class BuildRequest{
 
     }
 
+    public static Object pointConfig(Object config, Cons<Point2> cons){
+        if(config instanceof Point2){
+            config = ((Point2)config).cpy();
+            cons.get((Point2)config);
+        }else if(config instanceof Point2[]){
+            Point2[] result = new Point2[((Point2[])config).length];
+            int i = 0;
+            for(Point2 p : (Point2[])config){
+                result[i] = p.cpy();
+                cons.get(result[i++]);
+            }
+            config = result;
+        }
+        return config;
+    }
+
+    /** If this requests's config is a Point2 or an array of Point2s, this returns a copy of them for transformation.
+     * Otherwise does nothing. */
+    public void pointConfig(Cons<Point2> cons){
+        this.config = pointConfig(this.config, cons);
+    }
+
     public BuildRequest copy(){
         BuildRequest copy = new BuildRequest();
         copy.x = x;
diff --git a/core/src/mindustry/game/Schematics.java b/core/src/mindustry/game/Schematics.java
index 1cb3b44f13..f2efb8bbb6 100644
--- a/core/src/mindustry/game/Schematics.java
+++ b/core/src/mindustry/game/Schematics.java
@@ -2,20 +2,20 @@ package mindustry.game;
 
 import arc.*;
 import arc.assets.*;
-import arc.math.geom.*;
-import arc.struct.*;
 import arc.files.*;
 import arc.graphics.*;
 import arc.graphics.g2d.*;
 import arc.graphics.gl.*;
-import arc.util.*;
+import arc.math.geom.*;
+import arc.struct.*;
 import arc.util.ArcAnnotate.*;
+import arc.util.*;
 import arc.util.io.*;
 import arc.util.io.Streams.*;
 import arc.util.serialization.*;
 import mindustry.*;
 import mindustry.content.*;
-import mindustry.ctype.ContentType;
+import mindustry.ctype.*;
 import mindustry.entities.units.*;
 import mindustry.game.EventType.*;
 import mindustry.game.Schematic.*;
@@ -24,8 +24,12 @@ import mindustry.input.Placement.*;
 import mindustry.io.*;
 import mindustry.world.*;
 import mindustry.world.blocks.*;
+import mindustry.world.blocks.distribution.*;
+import mindustry.world.blocks.power.*;
 import mindustry.world.blocks.production.*;
+import mindustry.world.blocks.sandbox.*;
 import mindustry.world.blocks.storage.*;
+import mindustry.world.blocks.units.*;
 
 import java.io.*;
 import java.util.zip.*;
@@ -127,7 +131,7 @@ public class Schematics implements Loadable{
             }
 
             return s;
-        }catch(IOException e){
+        }catch(Throwable e){
             Log.err(e);
         }
         return null;
@@ -261,11 +265,9 @@ public class Schematics implements Loadable{
 
             tile.set(st.block, state.rules.defaultTeam);
             tile.rotation(st.rotation);
-            if(st.config instanceof Point2){
-                tile.configureAny(Pos.get(tile.x - st.x + ((Point2)st.config).x, tile.y - st.y + ((Point2)st.config).y));
-            }else{
-                tile.configureAny(st.config);
-            }
+
+            Object config = BuildRequest.pointConfig(st.config, point -> point.add(tile.x - st.x, tile.y - st.y));
+            tile.configureAny(config);
 
             if(st.block instanceof Drill){
                 tile.getLinkedTiles(t -> t.setOverlay(Blocks.oreCopper));
@@ -348,10 +350,7 @@ public class Schematics implements Loadable{
 
                 if(tile != null && tile.entity != null && !counted.contains(tile.pos()) && !(tile.block() instanceof BuildBlock)
                     && (tile.entity.block().isVisible() || (tile.entity.block() instanceof CoreBlock && Core.settings.getBool("coreselect")))){
-                    Object config = tile.entity.config();
-                    if(config instanceof Point2){
-                        config = Pos.get(((Point2)config).x + offsetX, ((Point2)config).y + offsetY);
-                    }
+                    Object config = BuildRequest.pointConfig(tile.entity.config(), point -> point.add(offsetX, offsetY));
 
                     tiles.add(new Stile(tile.block(), tile.x + offsetX, tile.y + offsetY, config, tile.rotation()));
                     counted.add(tile.pos());
@@ -423,10 +422,10 @@ public class Schematics implements Loadable{
             for(int i = 0; i < total; i++){
                 Block block = blocks.get(stream.readByte());
                 int position = stream.readInt();
-                Object config = ver == 0 ? stream.readInt() : TypeIO.readObject(Reads.get(stream));
+                Object config = ver == 0 ? mapConfig(block, stream.readInt()) : TypeIO.readObject(Reads.get(stream));
                 byte rotation = stream.readByte();
                 if(block != Blocks.air){
-                    tiles.add(new Stile(block, Pos.x(position), Pos.y(position), config, rotation));
+                    tiles.add(new Stile(block, Point2.x(position), Point2.y(position), config, rotation));
                 }
             }
 
@@ -466,12 +465,22 @@ public class Schematics implements Loadable{
             //write each tile
             for(Stile tile : schematic.tiles){
                 stream.writeByte(blocks.orderedItems().indexOf(tile.block));
-                stream.writeInt(Pos.get(tile.x, tile.y));
+                stream.writeInt(Point2.pack((int)tile.x, (int)tile.y));
                 TypeIO.writeObject(Writes.get(stream), tile.config);
                 stream.writeByte(tile.rotation);
             }
         }
     }
 
+    /** Maps legacy int configs to new config objects. */
+    private static Object mapConfig(Block block, int value){
+        if(block instanceof Sorter || block instanceof Unloader || block instanceof ItemSource) return content.item(value);
+        if(block instanceof MassDriver || block instanceof ItemBridge) return Point2.unpack(value);
+        if(block instanceof LiquidSource) return content.liquid(value);
+        if(block instanceof LightBlock || block instanceof CommandCenter) return value;
+
+        return null;
+    }
+
     //endregion
 }
diff --git a/core/src/mindustry/graphics/FloorRenderer.java b/core/src/mindustry/graphics/FloorRenderer.java
index 6711339cbf..0e30c3196b 100644
--- a/core/src/mindustry/graphics/FloorRenderer.java
+++ b/core/src/mindustry/graphics/FloorRenderer.java
@@ -4,6 +4,7 @@ import arc.*;
 import arc.graphics.*;
 import arc.graphics.g2d.*;
 import arc.math.*;
+import arc.math.geom.*;
 import arc.struct.*;
 import arc.struct.IntSet.*;
 import arc.util.*;
@@ -32,7 +33,7 @@ public class FloorRenderer implements Disposable{
 
     /**Queues up a cache change for a tile. Only runs in render loop. */
     public void recacheTile(Tile tile){
-        recacheSet.add(Pos.get(tile.x / chunksize, tile.y / chunksize));
+        recacheSet.add(Point2.pack(tile.x / chunksize, tile.y / chunksize));
     }
 
     public void drawFloor(){
@@ -106,7 +107,7 @@ public class FloorRenderer implements Disposable{
             IntSetIterator iterator = recacheSet.iterator();
             while(iterator.hasNext){
                 int chunk = iterator.next();
-                cacheChunk(Pos.x(chunk), Pos.y(chunk));
+                cacheChunk(Point2.x(chunk), Point2.y(chunk));
             }
 
             recacheSet.clear();
diff --git a/core/src/mindustry/input/InputHandler.java b/core/src/mindustry/input/InputHandler.java
index dfc0fd5cbf..3f4d887021 100644
--- a/core/src/mindustry/input/InputHandler.java
+++ b/core/src/mindustry/input/InputHandler.java
@@ -264,9 +264,8 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
         int ox = schemOriginX(), oy = schemOriginY();
 
         requests.each(req -> {
-            //rotate config position
-            if(req.config instanceof Point2){
-                int cx = ((Point2)req.config).x - req.originalX, cy = ((Point2)req.config).y - req.originalY;
+            req.pointConfig(p -> {
+                int cx = p.x - req.originalX, cy = p.y - req.originalY;
                 int lx = cx;
 
                 if(direction >= 0){
@@ -276,8 +275,8 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
                     cx = cy;
                     cy = -lx;
                 }
-                req.config = new Point2(cx + req.originalX, cy + req.originalY);
-            }
+                p.set(cx + req.originalX, cy + req.originalY);
+            });
 
             //rotate actual request, centered on its multiblock position
             float wx = (req.x - ox) * tilesize + req.block.offset(), wy = (req.y - oy) * tilesize + req.block.offset();
@@ -307,17 +306,17 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
                 req.y = (int)((value - req.block.offset()) / tilesize);
             }
 
-            if(req.config instanceof Point2){
+            req.pointConfig(p -> {
                 int corigin = x ? req.originalWidth/2 : req.originalHeight/2;
-                int nvalue = -((x ? ((Point2)req.config).x : ((Point2)req.config).y) - corigin) + corigin;
+                int nvalue = -((x ? p.x : p.y) - corigin) + corigin;
                 if(x){
                     req.originalX = -(req.originalX - corigin) + corigin;
-                    req.config = Pos.get(nvalue, ((Point2)req.config).y);
+                    p.x = nvalue;
                 }else{
                     req.originalY = -(req.originalY - corigin) + corigin;
-                    req.config = Pos.get(((Point2)req.config).x, nvalue);
+                    p.y = nvalue;
                 }
-            }
+            });
 
             //flip rotation
             if(x == (req.rotation % 2 == 0)){
@@ -450,9 +449,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
         for(BuildRequest req : requests){
             if(req.block != null && validPlace(req.x, req.y, req.block, req.rotation)){
                 BuildRequest copy = req.copy();
-                if(copy.hasConfig && copy.config instanceof Point2){
-                    copy.config = Pos.get(((Point2)copy.config).x + copy.x - copy.originalX, ((Point2)copy.config).x + copy.y - copy.originalY);
-                }
+                copy.pointConfig(p -> p.add(copy.x - copy.originalX, copy.y - copy.originalY));
                 player.builder().addBuild(copy);
             }
         }
diff --git a/core/src/mindustry/input/MobileInput.java b/core/src/mindustry/input/MobileInput.java
index 9ae45f444f..a61af1767b 100644
--- a/core/src/mindustry/input/MobileInput.java
+++ b/core/src/mindustry/input/MobileInput.java
@@ -222,9 +222,7 @@ public class MobileInput extends InputHandler implements GestureListener{
                             BuildRequest other = getRequest(request.x, request.y, request.block.size, null);
                             BuildRequest copy = request.copy();
 
-                            if(copy.hasConfig && copy.config instanceof Point2){
-                                copy.config = Pos.get(((Point2)copy.config).x + copy.x - copy.originalX, ((Point2)copy.config).y + copy.y - copy.originalY);
-                            }
+                            copy.pointConfig(p -> p.add(copy.x - copy.originalX, copy.y - copy.originalY));
 
                             if(other == null){
                                 player.builder().addBuild(copy);
diff --git a/core/src/mindustry/input/Placement.java b/core/src/mindustry/input/Placement.java
index 49d3e9a030..f3cd55048d 100644
--- a/core/src/mindustry/input/Placement.java
+++ b/core/src/mindustry/input/Placement.java
@@ -107,7 +107,7 @@ public class Placement{
                 found = true;
                 break;
             }
-            closed.add(Pos.get(next.x, next.y));
+            closed.add(Point2.pack((int)next.x, (int)next.y));
             for(Point2 point : Geometry.d4){
                 int newx = next.x + point.x, newy = next.y + point.y;
                 Tile child = world.tile(newx, newy);
@@ -129,11 +129,11 @@ public class Placement{
         Tile current = end;
         while(current != start && total++ < nodeLimit){
             if(current == null) return false;
-            int newPos = parents.get(current.pos(), Pos.invalid);
+            int newPos = parents.get(current.pos(), -1);
 
-            if(newPos == Pos.invalid) return false;
+            if(newPos == -1) return false;
 
-            points.add(Pools.obtain(Point2.class, Point2::new).set(Pos.x(newPos),  Pos.y(newPos)));
+            points.add(Pools.obtain(Point2.class, Point2::new).set(Point2.x(newPos), Point2.y(newPos)));
             current = world.tile(newPos);
         }
 
diff --git a/core/src/mindustry/io/TypeIO.java b/core/src/mindustry/io/TypeIO.java
index 23ae0710af..9d7914a126 100644
--- a/core/src/mindustry/io/TypeIO.java
+++ b/core/src/mindustry/io/TypeIO.java
@@ -25,6 +25,8 @@ import static mindustry.Vars.*;
 @TypeIOHandler
 public class TypeIO{
 
+    //TODO read/write enums like commands!
+
     public static void writeObject(Writes write, Object object){
         if(object == null){
             write.b((byte)0);
@@ -57,6 +59,12 @@ public class TypeIO{
             write.b((byte)7);
             write.i(((Point2)object).x);
             write.i(((Point2)object).y);
+        }else if(object instanceof Point2[]){
+            write.b((byte)8);
+            write.b(((Point2[])object).length);
+            for(int i = 0; i < ((Point2[])object).length; i++){
+                write.i(((Point2[])object)[i].pack());
+            }
         }else{
             throw new IllegalArgumentException("Unknown object type: " + object.getClass());
         }
@@ -73,6 +81,7 @@ public class TypeIO{
             case 5: return content.getByID(ContentType.all[read.b()], read.s());
             case 6: short length = read.s(); IntArray arr = new IntArray(); for(int i = 0; i < length; i ++) arr.add(read.i()); return arr;
             case 7: return new Point2(read.i(), read.i());
+            case 8: byte len = read.b(); Point2[] out = new Point2[len]; for(int i = 0; i < len; i ++) out[i] = Point2.unpack(read.i()); return out;
             default: throw new IllegalArgumentException("Unknown object type: " + type);
         }
     }
@@ -86,7 +95,7 @@ public class TypeIO{
     }
 
     public static void writeTile(Writes write, Tile tile){
-        write.i(tile == null ? Pos.get(-1, -1) : tile.pos());
+        write.i(tile == null ? Point2.pack(-1, -1) : tile.pos());
     }
 
     public static Tile readTile(Reads read){
@@ -105,7 +114,7 @@ public class TypeIO{
         write.s((short)requests.length);
         for(BuildRequest request : requests){
             write.b(request.breaking ? (byte)1 : 0);
-            write.i(Pos.get(request.x, request.y));
+            write.i(Point2.pack(request.x, request.y));
             if(!request.breaking){
                 write.s(request.block.id);
                 write.b((byte)request.rotation);
@@ -128,13 +137,13 @@ public class TypeIO{
             }
 
             if(type == 1){ //remove
-                currentRequest = new BuildRequest(Pos.x(position), Pos.y(position));
+                currentRequest = new BuildRequest(Point2.x(position), Point2.y(position));
             }else{ //place
                 short block = read.s();
                 byte rotation = read.b();
                 boolean hasConfig = read.b() == 1;
                 Object config = readObject(read);
-                currentRequest = new BuildRequest(Pos.x(position), Pos.y(position), rotation, content.block(block));
+                currentRequest = new BuildRequest(Point2.x(position), Point2.y(position), rotation, content.block(block));
                 if(hasConfig){
                     currentRequest.configure(config);
                 }
diff --git a/core/src/mindustry/maps/generators/BasicGenerator.java b/core/src/mindustry/maps/generators/BasicGenerator.java
index f8093bbe66..77f512e35e 100644
--- a/core/src/mindustry/maps/generators/BasicGenerator.java
+++ b/core/src/mindustry/maps/generators/BasicGenerator.java
@@ -378,7 +378,7 @@ public abstract class BasicGenerator implements WorldGenerator{
         arr.add(start.pos());
         while(!arr.isEmpty()){
             int i = arr.pop();
-            int x = Pos.x(i), y = Pos.y(i);
+            int x = Point2.x(i), y = Point2.y(i);
             tiles.getn(x, y).cost = 2;
             for(Point2 point : Geometry.d4){
                 int newx = x + point.x, newy = y + point.y;
diff --git a/core/src/mindustry/world/Block.java b/core/src/mindustry/world/Block.java
index 20dea8483a..3194a93f1d 100644
--- a/core/src/mindustry/world/Block.java
+++ b/core/src/mindustry/world/Block.java
@@ -476,14 +476,20 @@ public class Block extends BlockStorage{
 
     /** Called when arbitrary configuration is applied to a tile. */
     public void configured(Tile tile, @Nullable Playerc player, @Nullable Object value){
-        if(value == null){
-            //TODO
-            //tapped(tile, player);
-        }else if(configurations.containsKey(value.getClass())){
-            configurations.get(value.getClass()).configured(tile, value);
+        //null is of type Void.class; anonymous classes use their superclass.
+        Class<?> type = value == null ? void.class : value.getClass().isAnonymousClass() ? value.getClass().getSuperclass() : value.getClass();
+
+        if(configurations.containsKey(type)){
+            configurations.get(type).configured(tile, value);
         }
     }
 
+    /** Configure when a null value is passed.*/
+    public void configClear(Cons<Tile> cons){
+        configurations.put(void.class, (tile, value) -> cons.get(tile));
+    }
+
+    /** Listen for a config by class type. */
     public <T> void config(Class<T> type, ConfigHandler<T> config){
         configurations.put(type, config);
     }
@@ -743,7 +749,7 @@ public class Block extends BlockStorage{
 
     }
 
-    public void drawRequestConfigCenter(BuildRequest req, Content content, String region){
+    public void drawRequestConfigCenter(BuildRequest req, Object content, String region){
         Color color = content instanceof Item ? ((Item)content).color : content instanceof Liquid ? ((Liquid)content).color : null;
         if(color == null) return;
 
diff --git a/core/src/mindustry/world/Pos.java b/core/src/mindustry/world/Pos.java
deleted file mode 100644
index 995e7a0d77..0000000000
--- a/core/src/mindustry/world/Pos.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package mindustry.world;
-
-/** Methods for a packed position 'struct', contained in an int. */
-public class Pos{
-    public static final int invalid = get(-1, -1);
-
-    /** Returns packed position from an x/y position. The values must be within short limits. */
-    public static int get(int x, int y){
-        return (((short)x) << 16) | (((short)y) & 0xFFFF);
-    }
-
-    /** Returns the x component of a position. */
-    public static short x(int pos){
-        return (short)(pos >>> 16);
-    }
-
-    /** Returns the y component of a position. */
-    public static short y(int pos){
-        return (short)(pos & 0xFFFF);
-    }
-}
diff --git a/core/src/mindustry/world/Tile.java b/core/src/mindustry/world/Tile.java
index 237260fe9c..8e86cf0f4b 100644
--- a/core/src/mindustry/world/Tile.java
+++ b/core/src/mindustry/world/Tile.java
@@ -50,9 +50,9 @@ public class Tile implements Position{
         this(x, y, content.block(floor), content.block(overlay), content.block(wall));
     }
 
-    /** Returns this tile's position as a {@link Pos}. */
+    /** Returns this tile's position as a packed point. */
     public int pos(){
-        return Pos.get(x, y);
+        return Point2.pack(x, y);
     }
 
     public byte relativeTo(Tile tile){
diff --git a/core/src/mindustry/world/Tiles.java b/core/src/mindustry/world/Tiles.java
index 1aac3d0c84..000cf7efee 100644
--- a/core/src/mindustry/world/Tiles.java
+++ b/core/src/mindustry/world/Tiles.java
@@ -1,6 +1,7 @@
 package mindustry.world;
 
 import arc.func.*;
+import arc.math.geom.*;
 import arc.util.ArcAnnotate.*;
 
 import java.util.*;
@@ -61,7 +62,7 @@ public class Tiles implements Iterable<Tile>{
 
     /** @return a tile at an int position (not equivalent to geti) */
     public @Nullable Tile getp(int pos){
-        return get(Pos.x(pos), Pos.y(pos));
+        return get(Point2.x(pos), Point2.y(pos));
     }
 
     @Override
diff --git a/core/src/mindustry/world/blocks/StaticWall.java b/core/src/mindustry/world/blocks/StaticWall.java
index 531fb010a2..80b813d84e 100644
--- a/core/src/mindustry/world/blocks/StaticWall.java
+++ b/core/src/mindustry/world/blocks/StaticWall.java
@@ -3,6 +3,7 @@ package mindustry.world.blocks;
 import arc.Core;
 import arc.graphics.g2d.*;
 import arc.math.Mathf;
+import arc.math.geom.*;
 import mindustry.graphics.CacheLayer;
 import mindustry.world.*;
 
@@ -25,7 +26,7 @@ public class StaticWall extends Rock{
         int rx = tile.x / 2 * 2;
         int ry = tile.y / 2 * 2;
 
-        if(Core.atlas.isFound(large) && eq(rx, ry) && Mathf.randomSeed(Pos.get(rx, ry)) < 0.5){
+        if(Core.atlas.isFound(large) && eq(rx, ry) && Mathf.randomSeed(Point2.pack(rx, ry)) < 0.5){
             Draw.rect(split[tile.x % 2][1 - tile.y % 2], tile.worldx(), tile.worldy());
         }else if(variants > 0){
             Draw.rect(variantRegions[Mathf.randomSeed(tile.pos(), 0, Math.max(0, variantRegions.length - 1))], tile.worldx(), tile.worldy());
diff --git a/core/src/mindustry/world/blocks/defense/Door.java b/core/src/mindustry/world/blocks/defense/Door.java
index d38d2931c1..36b646e1cb 100644
--- a/core/src/mindustry/world/blocks/defense/Door.java
+++ b/core/src/mindustry/world/blocks/defense/Door.java
@@ -1,20 +1,17 @@
 package mindustry.world.blocks.defense;
 
 import arc.*;
-import arc.util.io.*;
-import mindustry.annotations.Annotations.*;
 import arc.Graphics.*;
 import arc.Graphics.Cursor.*;
 import arc.graphics.g2d.*;
 import arc.math.geom.*;
+import arc.util.io.*;
 import mindustry.content.*;
 import mindustry.entities.*;
 import mindustry.gen.*;
 import mindustry.world.*;
 
-import java.io.*;
-
-import static mindustry.Vars.*;
+import static mindustry.Vars.pathfinder;
 
 public class Door extends Wall{
     protected final static Rect rect = new Rect();
@@ -31,23 +28,19 @@ public class Door extends Wall{
         solidifes = true;
         consumesTap = true;
         entityType = DoorEntity::new;
-    }
 
-    @Remote(called = Loc.server)
-    public static void onDoorToggle(Playerc player, Tile tile, boolean open){
-        DoorEntity entity = tile.ent();
-        if(entity != null){
+        config(Boolean.class, (tile, open) -> {
+            DoorEntity entity = tile.ent();
             entity.open = open;
-            Door door = (Door)tile.block();
 
             pathfinder.updateTile(tile);
             if(!entity.open){
-                door.openfx.at(tile.drawx(), tile.drawy());
+                openfx.at(tile.drawx(), tile.drawy());
             }else{
-                door.closefx.at(tile.drawx(), tile.drawy());
+                closefx.at(tile.drawx(), tile.drawy());
             }
             Sounds.door.at(tile);
-        }
+        });
     }
 
     @Override
@@ -86,12 +79,17 @@ public class Door extends Wall{
             return;
         }
 
-        Call.onDoorToggle(null, tile, !entity.open);
+        tile.configure(!entity.open);
     }
 
     public class DoorEntity extends TileEntity{
         public boolean open = false;
 
+        @Override
+        public Boolean config(){
+            return open;
+        }
+
         @Override
         public void write(Writes write){
             super.write(write);
diff --git a/core/src/mindustry/world/blocks/distribution/ItemBridge.java b/core/src/mindustry/world/blocks/distribution/ItemBridge.java
index afd1ca51b6..9252fbb9a3 100644
--- a/core/src/mindustry/world/blocks/distribution/ItemBridge.java
+++ b/core/src/mindustry/world/blocks/distribution/ItemBridge.java
@@ -1,23 +1,21 @@
 package mindustry.world.blocks.distribution;
 
 import arc.*;
-import arc.struct.*;
-import arc.struct.IntSet.*;
 import arc.graphics.*;
 import arc.graphics.g2d.*;
 import arc.math.*;
 import arc.math.geom.*;
+import arc.struct.*;
+import arc.struct.IntSet.*;
 import arc.util.*;
 import arc.util.io.*;
-import mindustry.gen.*;
 import mindustry.entities.units.*;
+import mindustry.gen.*;
 import mindustry.graphics.*;
 import mindustry.type.*;
 import mindustry.world.*;
 import mindustry.world.meta.*;
 
-import java.io.*;
-
 import static mindustry.Vars.*;
 
 public class ItemBridge extends Block{
@@ -27,7 +25,7 @@ public class ItemBridge extends Block{
     public TextureRegion endRegion, bridgeRegion, arrowRegion;
 
     private static BuildRequest otherReq;
-    private static int lastPlaced = Pos.invalid;
+    private static int lastPlaced = -1;
 
     public ItemBridge(String name){
         super(name);
@@ -43,6 +41,7 @@ public class ItemBridge extends Block{
         group = BlockGroup.transportation;
         entityType = ItemBridgeEntity::new;
 
+        config(Point2.class, (tile, i) -> tile.<ItemBridgeEntity>ent().link = i.pack());
         config(Integer.class, (tile, i) -> tile.<ItemBridgeEntity>ent().link = i);
     }
 
@@ -59,7 +58,7 @@ public class ItemBridge extends Block{
     public void drawRequestConfigTop(BuildRequest req, Eachable<BuildRequest> list){
         otherReq = null;
         list.each(other -> {
-            if(other.block == this && req.config == Pos.get(other.x, other.y)){
+            if(other.block == this && req.config instanceof Point2 && ((Point2)req.config).equals(other.x, other.y)){
                 otherReq = other;
             }
         });
@@ -87,7 +86,7 @@ public class ItemBridge extends Block{
     }
 
     public Tile findLink(int x, int y){
-        if(world.tile(x, y) != null && linkValid(world.tile(x, y), world.tile(lastPlaced)) && lastPlaced != Pos.get(x, y)){
+        if(world.tile(x, y) != null && linkValid(world.tile(x, y), world.tile(lastPlaced)) && lastPlaced != Point2.pack(x, y)){
             return world.tile(lastPlaced);
         }
         return null;
@@ -152,7 +151,7 @@ public class ItemBridge extends Block{
 
         if(linkValid(tile, other)){
             if(entity.link == other.pos()){
-                tile.configure(Pos.invalid);
+                tile.configure(-1);
             }else{
                 tile.configure(other.pos());
             }
@@ -283,7 +282,7 @@ public class ItemBridge extends Block{
 
             while(it.hasNext){
                 int v = it.next();
-                if(tile.absoluteRelativeTo(Pos.x(v), Pos.y(v)) == i){
+                if(tile.absoluteRelativeTo(Point2.x(v), Point2.y(v)) == i){
                     return false;
                 }
             }
@@ -328,7 +327,7 @@ public class ItemBridge extends Block{
 
             while(it.hasNext){
                 int v = it.next();
-                if(tile.absoluteRelativeTo(Pos.x(v), Pos.y(v)) == i){
+                if(tile.absoluteRelativeTo(Point2.x(v), Point2.y(v)) == i){
                     return false;
                 }
             }
@@ -359,7 +358,7 @@ public class ItemBridge extends Block{
     }
 
     public static class ItemBridgeEntity extends TileEntity{
-        public int link = Pos.invalid;
+        public int link = -1;
         public IntSet incoming = new IntSet();
         public float uptime;
         public float time;
@@ -367,8 +366,8 @@ public class ItemBridge extends Block{
         public float cycleSpeed = 1f;
 
         @Override
-        public Object config(){
-            return link;
+        public Point2 config(){
+            return Point2.unpack(link);
         }
 
         @Override
diff --git a/core/src/mindustry/world/blocks/distribution/MassDriver.java b/core/src/mindustry/world/blocks/distribution/MassDriver.java
index d9571be083..655f463daa 100644
--- a/core/src/mindustry/world/blocks/distribution/MassDriver.java
+++ b/core/src/mindustry/world/blocks/distribution/MassDriver.java
@@ -1,9 +1,10 @@
 package mindustry.world.blocks.distribution;
 
 import arc.*;
-import arc.struct.*;
 import arc.graphics.g2d.*;
 import arc.math.*;
+import arc.math.geom.*;
+import arc.struct.*;
 import arc.util.*;
 import arc.util.io.*;
 import arc.util.pooling.Pool.*;
@@ -15,8 +16,6 @@ import mindustry.graphics.*;
 import mindustry.type.*;
 import mindustry.world.*;
 
-import java.io.*;
-
 import static mindustry.Vars.*;
 
 public class MassDriver extends Block{
@@ -42,11 +41,9 @@ public class MassDriver extends Block{
         hasPower = true;
         outlineIcon = true;
         entityType = MassDriverEntity::new;
-    }
 
-    @Override
-    public void configured(Tile tile, Playerc player, Object value){
-        tile.<MassDriverEntity>ent().link = value;
+        config(Point2.class, (tile, point) -> tile.<MassDriverEntity>ent().link = point.pack());
+        config(Integer.class, (tile, point) -> tile.<MassDriverEntity>ent().link = point);
     }
 
     @Override
@@ -327,8 +324,8 @@ public class MassDriver extends Block{
         }
 
         @Override
-        public int config(){
-            return link;
+        public Point2 config(){
+            return Point2.unpack(link);
         }
 
         @Override
diff --git a/core/src/mindustry/world/blocks/distribution/OverflowGate.java b/core/src/mindustry/world/blocks/distribution/OverflowGate.java
index cbcaa5f631..80562f81f3 100644
--- a/core/src/mindustry/world/blocks/distribution/OverflowGate.java
+++ b/core/src/mindustry/world/blocks/distribution/OverflowGate.java
@@ -136,7 +136,7 @@ public class OverflowGate extends Block{
 
         @Override
         public void write(Writes write){
-            write.i(lastInput == null ? Pos.invalid : lastInput.pos());
+            write.i(lastInput == null ? -1 : lastInput.pos());
         }
 
         @Override
diff --git a/core/src/mindustry/world/blocks/distribution/Sorter.java b/core/src/mindustry/world/blocks/distribution/Sorter.java
index be5347829f..c2fa20efd7 100644
--- a/core/src/mindustry/world/blocks/distribution/Sorter.java
+++ b/core/src/mindustry/world/blocks/distribution/Sorter.java
@@ -6,15 +6,13 @@ import arc.scene.ui.layout.*;
 import arc.util.ArcAnnotate.*;
 import arc.util.*;
 import arc.util.io.*;
-import mindustry.gen.*;
 import mindustry.entities.units.*;
+import mindustry.gen.*;
 import mindustry.type.*;
 import mindustry.world.*;
 import mindustry.world.blocks.*;
 import mindustry.world.meta.*;
 
-import java.io.*;
-
 import static mindustry.Vars.*;
 
 public class Sorter extends Block{
@@ -32,6 +30,7 @@ public class Sorter extends Block{
         entityType = SorterEntity::new;
 
         config(Item.class, (tile, item) -> tile.<SorterEntity>ent().sortItem = item);
+        configClear(tile -> tile.<SorterEntity>ent().sortItem = null);
     }
 
     @Override
@@ -48,7 +47,8 @@ public class Sorter extends Block{
 
     @Override
     public void configured(Tile tile, Playerc player, Object value){
-        tile.<SorterEntity>ent().sortItem = (Item)value;
+        super.configured(tile, player, value);
+
         if(!headless){
             renderer.minimap.update(tile);
         }
@@ -139,25 +139,17 @@ public class Sorter extends Block{
     @Override
     public void buildConfiguration(Tile tile, Table table){
         SorterEntity entity = tile.ent();
-        ItemSelection.buildTable(table, content.items(), () -> entity.sortItem, item -> {
-            lastItem = item;
-            tile.configure(item == null ? -1 : item.id);
-        });
+        ItemSelection.buildTable(table, content.items(), () -> entity.sortItem, item -> tile.configure(lastItem = item));
     }
 
     public class SorterEntity extends TileEntity{
         @Nullable Item sortItem;
 
         @Override
-        public Object config(){
+        public Item config(){
             return sortItem;
         }
 
-        @Override
-        public void setConfig(Object config){
-            sortItem = (Item)config;
-        }
-
         @Override
         public byte version(){
             return 2;
diff --git a/core/src/mindustry/world/blocks/logic/MessageBlock.java b/core/src/mindustry/world/blocks/logic/MessageBlock.java
index 51f1fc088f..7a3d595116 100644
--- a/core/src/mindustry/world/blocks/logic/MessageBlock.java
+++ b/core/src/mindustry/world/blocks/logic/MessageBlock.java
@@ -10,8 +10,6 @@ import arc.scene.ui.layout.*;
 import arc.util.*;
 import arc.util.io.*;
 import arc.util.pooling.*;
-import mindustry.annotations.Annotations.*;
-import mindustry.entities.*;
 import mindustry.gen.*;
 import mindustry.net.*;
 import mindustry.ui.*;
@@ -21,8 +19,9 @@ import mindustry.world.*;
 import static mindustry.Vars.*;
 
 public class MessageBlock extends Block{
-    protected static int maxTextLength = 220;
-    protected static int maxNewlines = 24;
+    //don't change this too much unless you want to run into issues with packet sizes
+    public int maxTextLength = 220;
+    public int maxNewlines = 24;
 
     public MessageBlock(String name){
         super(name);
@@ -30,40 +29,32 @@ public class MessageBlock extends Block{
         solid = true;
         destructible = true;
         entityType = MessageBlockEntity::new;
-    }
 
-    @Remote(targets = Loc.both, called = Loc.both, forward = true)
-    public static void setMessageBlockText(Playerc player, Tile tile, String text){
-        if(!Units.canInteract(player, tile)) return;
-        if(net.server() && text.length() > maxTextLength){
-            throw new ValidateException(player, "Player has gone above text limit.");
-        }
-
-        //can be broken while a player is typing
-        if(!(tile.block() instanceof MessageBlock)){
-            return;
-        }
-
-        StringBuilder result = new StringBuilder(text.length());
-        text = text.trim();
-        int count = 0;
-        for(int i = 0; i < text.length(); i++){
-            char c = text.charAt(i);
-            if(c == '\n' || c == '\r'){
-                count ++;
-                if(count <= maxNewlines){
-                    result.append('\n');
-                }
-            }else{
-                result.append(c);
+        config(String.class, (tile, text) -> {
+            if(net.server() && text.length() > maxTextLength){
+                throw new ValidateException(player, "Player has gone above text limit.");
+            }
+
+            MessageBlockEntity entity = tile.ent();
+
+            StringBuilder result = new StringBuilder(text.length());
+            text = text.trim();
+            int count = 0;
+            for(int i = 0; i < text.length(); i++){
+                char c = text.charAt(i);
+                if(c == '\n' || c == '\r'){
+                    count ++;
+                    if(count <= maxNewlines){
+                        result.append('\n');
+                    }
+                }else{
+                    result.append(c);
+                }
             }
-        }
 
-        MessageBlockEntity entity = tile.ent();
-        if(entity != null){
             entity.message = result.toString();
             entity.lines = entity.message.split("\n");
-        }
+        });
     }
 
     @Override
@@ -102,9 +93,7 @@ public class MessageBlock extends Block{
                     text = entity.message;
                     multiline = true;
                     maxLength = maxTextLength;
-                    accepted = out -> {
-                        Call.setMessageBlockText(player, tile, out);
-                    };
+                    accepted = tile::configure;
                 }});
             }else{
                 FloatingDialog dialog = new FloatingDialog("$editmessage");
@@ -124,11 +113,11 @@ public class MessageBlock extends Block{
                 });
                 a.setMaxLength(maxTextLength);
                 dialog.buttons.addButton("$ok", () -> {
-                    Call.setMessageBlockText(player, tile, a.getText());
+                    tile.configure(a.getText());
                     dialog.hide();
                 }).size(130f, 60f);
                 dialog.update(() -> {
-                    if(!entity.isValid()){
+                    if(tile.block() != this){
                         dialog.hide();
                     }
                 });
@@ -148,6 +137,11 @@ public class MessageBlock extends Block{
         public String message = "";
         public String[] lines = {""};
 
+        @Override
+        public String config(){
+            return message;
+        }
+
         @Override
         public void write(Writes write){
             super.write(write);
diff --git a/core/src/mindustry/world/blocks/power/LightBlock.java b/core/src/mindustry/world/blocks/power/LightBlock.java
index 20bb4be208..dffcaaf021 100644
--- a/core/src/mindustry/world/blocks/power/LightBlock.java
+++ b/core/src/mindustry/world/blocks/power/LightBlock.java
@@ -9,8 +9,6 @@ import mindustry.gen.*;
 import mindustry.graphics.*;
 import mindustry.world.*;
 
-import java.io.*;
-
 import static mindustry.Vars.*;
 
 public class LightBlock extends Block{
@@ -27,6 +25,8 @@ public class LightBlock extends Block{
         topRegion = reg("-top");
         configurable = true;
         entityType = LightEntity::new;
+
+        config(Integer.class, (tile, value) -> tile.<LightEntity>ent().color = value);
     }
 
     @Override
@@ -61,11 +61,6 @@ public class LightBlock extends Block{
         }).size(40f);
     }
 
-    @Override
-    public void configured(Tile tile, Playerc player, Object value){
-        tile.<LightEntity>ent().color = value;
-    }
-
     @Override
     public void drawLight(Tile tile){
         LightEntity entity = tile.ent();
@@ -76,7 +71,7 @@ public class LightBlock extends Block{
         public int color = Pal.accent.rgba();
 
         @Override
-        public int config(){
+        public Integer config(){
             return color;
         }
 
diff --git a/core/src/mindustry/world/blocks/power/PowerNode.java b/core/src/mindustry/world/blocks/power/PowerNode.java
index 5ff957b1c3..0e2071e50b 100644
--- a/core/src/mindustry/world/blocks/power/PowerNode.java
+++ b/core/src/mindustry/world/blocks/power/PowerNode.java
@@ -35,45 +35,52 @@ public class PowerNode extends PowerBlock{
         configurable = true;
         consumesPower = false;
         outputsPower = false;
-    }
+        entityType = PowerNodeEntity::new;
 
-    @Override
-    public void configured(Tile tile, Playerc player, Object value){
-        Tilec entity = tile.entity;
-        Tile other = world.tile(value);
-        boolean contains = entity.power().links.contains(value), valid = other != null && other.entity != null && other.entity.power() != null;
+        config(Integer.class, (tile, value) -> {
+            Tilec entity = tile.entity;
+            Tile other = world.tile(value);
+            boolean contains = entity.power().links.contains(value), valid = other != null && other.entity != null && other.entity.power() != null;
 
-        if(contains){
-            //unlink
-            entity.power().links.removeValue(value);
-            if(valid) other.entity.power().links.removeValue(tile.pos());
+            if(contains){
+                //unlink
+                entity.power().links.removeValue(value);
+                if(valid) other.entity.power().links.removeValue(tile.pos());
 
-            PowerGraph newgraph = new PowerGraph();
+                PowerGraph newgraph = new PowerGraph();
 
-            //reflow from this point, covering all tiles on this side
-            newgraph.reflow(tile);
+                //reflow from this point, covering all tiles on this side
+                newgraph.reflow(tile);
 
-            if(valid && other.entity.power().graph != newgraph){
-                //create new graph for other end
-                PowerGraph og = new PowerGraph();
-                //reflow from other end
-                og.reflow(other);
-            }
-        }else if(linkValid(tile, other) && valid && entity.power().links.size < maxNodes){
-
-            if(!entity.power().links.contains(other.pos())){
-                entity.power().links.add(other.pos());
-            }
-
-            if(other.getTeamID() == tile.getTeamID()){
-
-                if(!other.entity.power().links.contains(tile.pos())){
-                    other.entity.power().links.add(tile.pos());
+                if(valid && other.entity.power().graph != newgraph){
+                    //create new graph for other end
+                    PowerGraph og = new PowerGraph();
+                    //reflow from other end
+                    og.reflow(other);
                 }
-            }
+            }else if(linkValid(tile, other) && valid && entity.power().links.size < maxNodes){
 
-            entity.power().graph.add(other.entity.power().graph);
-        }
+                if(!entity.power().links.contains(other.pos())){
+                    entity.power().links.add(other.pos());
+                }
+
+                if(other.getTeamID() == tile.getTeamID()){
+
+                    if(!other.entity.power().links.contains(tile.pos())){
+                        other.entity.power().links.add(tile.pos());
+                    }
+                }
+
+                entity.power().graph.add(other.entity.power().graph);
+            }
+        });
+
+        config(Point2[].class, (tile, value) -> {
+            tile.entity.power().links.clear();
+            for(Point2 p : value){
+                tile.entity.power().links.add(p.pack());
+            }
+        });
     }
 
     @Override
@@ -360,4 +367,16 @@ public class PowerNode extends PowerBlock{
             return false;
         });
     }
+
+    public class PowerNodeEntity extends TileEntity{
+
+        @Override
+        public Point2[] config(){
+            Point2[] out = new Point2[power.links.size];
+            for(int i = 0; i < out.length; i++){
+                out[i] = Point2.unpack(power.links.get(i));
+            }
+            return out;
+        }
+    }
 }
diff --git a/core/src/mindustry/world/blocks/sandbox/ItemSource.java b/core/src/mindustry/world/blocks/sandbox/ItemSource.java
index 994fe0e0d5..c94374da77 100644
--- a/core/src/mindustry/world/blocks/sandbox/ItemSource.java
+++ b/core/src/mindustry/world/blocks/sandbox/ItemSource.java
@@ -5,15 +5,13 @@ import arc.graphics.g2d.*;
 import arc.scene.ui.layout.*;
 import arc.util.*;
 import arc.util.io.*;
-import mindustry.gen.*;
 import mindustry.entities.units.*;
+import mindustry.gen.*;
 import mindustry.type.*;
 import mindustry.world.*;
 import mindustry.world.blocks.*;
 import mindustry.world.meta.*;
 
-import java.io.*;
-
 import static mindustry.Vars.content;
 
 public class ItemSource extends Block{
@@ -27,17 +25,15 @@ public class ItemSource extends Block{
         group = BlockGroup.transportation;
         configurable = true;
         entityType = ItemSourceEntity::new;
-    }
 
-    @Override
-    public void configured(Tile tile, Playerc player, Object value){
-        tile.<ItemSourceEntity>ent().outputItem = content.item(value);
+        config(Item.class, (tile, item) -> tile.<ItemSourceEntity>ent().outputItem = item);
+        configClear(tile -> tile.<ItemSourceEntity>ent().outputItem = null);
     }
 
     @Override
     public void playerPlaced(Tile tile){
         if(lastItem != null){
-            Core.app.post(() -> tile.configure(lastItem.id));
+            Core.app.post(() -> tile.configure(lastItem));
         }
     }
 
@@ -49,7 +45,7 @@ public class ItemSource extends Block{
 
     @Override
     public void drawRequestConfig(BuildRequest req, Eachable<BuildRequest> list){
-        drawRequestConfigCenter(req, content.item(req.config), "center");
+        drawRequestConfigCenter(req, req.config, "center");
     }
 
     @Override
@@ -82,10 +78,7 @@ public class ItemSource extends Block{
     @Override
     public void buildConfiguration(Tile tile, Table table){
         ItemSourceEntity entity = tile.ent();
-        ItemSelection.buildTable(table, content.items(), () -> entity.outputItem, item -> {
-            lastItem = item;
-            tile.configure(item == null ? -1 : item.id);
-        });
+        ItemSelection.buildTable(table, content.items(), () -> entity.outputItem, item -> tile.configure(lastItem = item));
     }
 
     @Override
@@ -97,8 +90,8 @@ public class ItemSource extends Block{
         Item outputItem;
 
         @Override
-        public int config(){
-            return outputItem == null ? -1 : outputItem.id;
+        public Item config(){
+            return outputItem;
         }
 
         @Override
diff --git a/core/src/mindustry/world/blocks/sandbox/LiquidSource.java b/core/src/mindustry/world/blocks/sandbox/LiquidSource.java
index 4c4644814b..938676f41f 100644
--- a/core/src/mindustry/world/blocks/sandbox/LiquidSource.java
+++ b/core/src/mindustry/world/blocks/sandbox/LiquidSource.java
@@ -6,14 +6,13 @@ import arc.scene.ui.layout.*;
 import arc.util.ArcAnnotate.*;
 import arc.util.*;
 import arc.util.io.*;
+import mindustry.ctype.*;
 import mindustry.entities.units.*;
 import mindustry.gen.*;
 import mindustry.type.*;
 import mindustry.world.*;
 import mindustry.world.blocks.*;
 
-import java.io.*;
-
 import static mindustry.Vars.content;
 
 public class LiquidSource extends Block{
@@ -29,13 +28,14 @@ public class LiquidSource extends Block{
         outputsLiquid = true;
         entityType = LiquidSourceEntity::new;
 
-        config();
+        config(Liquid.class, (tile, l) -> tile.<LiquidSourceEntity>ent().source = l);
+        configClear(tile -> tile.<LiquidSourceEntity>ent().source = null);
     }
 
     @Override
     public void playerPlaced(Tile tile){
         if(lastLiquid != null){
-            Core.app.post(() -> tile.configure(lastLiquid.id));
+            Core.app.post(() -> tile.configure(lastLiquid));
         }
     }
 
@@ -60,7 +60,7 @@ public class LiquidSource extends Block{
 
     @Override
     public void drawRequestConfig(BuildRequest req, Eachable<BuildRequest> list){
-        drawRequestConfigCenter(req, content.liquid(req.config), "center");
+        drawRequestConfigCenter(req, (Content)req.config, "center");
     }
 
     @Override
@@ -80,22 +80,14 @@ public class LiquidSource extends Block{
     public void buildConfiguration(Tile tile, Table table){
         LiquidSourceEntity entity = tile.ent();
 
-        ItemSelection.buildTable(table, content.liquids(), () -> entity.source, liquid -> {
-            lastLiquid = liquid;
-            tile.configure(liquid == null ? -1 : liquid.id);
-        });
-    }
-
-    @Override
-    public void configured(Tile tile, Playerc player, Object value){
-        tile.<LiquidSourceEntity>ent().source = value == -1 ? null : content.liquid(value);
+        ItemSelection.buildTable(table, content.liquids(), () -> entity.source, liquid -> tile.configure(lastLiquid = liquid));
     }
 
     class LiquidSourceEntity extends TileEntity{
         public @Nullable Liquid source = null;
 
         @Override
-        public Object config(){
+        public Liquid config(){
             return source;
         }
 
diff --git a/core/src/mindustry/world/blocks/storage/Unloader.java b/core/src/mindustry/world/blocks/storage/Unloader.java
index f09fb6868b..9954c27385 100644
--- a/core/src/mindustry/world/blocks/storage/Unloader.java
+++ b/core/src/mindustry/world/blocks/storage/Unloader.java
@@ -5,14 +5,12 @@ import arc.graphics.g2d.*;
 import arc.scene.ui.layout.*;
 import arc.util.*;
 import arc.util.io.*;
-import mindustry.gen.*;
 import mindustry.entities.units.*;
+import mindustry.gen.*;
 import mindustry.type.*;
 import mindustry.world.*;
 import mindustry.world.blocks.*;
 
-import java.io.*;
-
 import static mindustry.Vars.content;
 
 public class Unloader extends Block{
@@ -29,11 +27,18 @@ public class Unloader extends Block{
         hasItems = true;
         configurable = true;
         entityType = UnloaderEntity::new;
+
+        config(Item.class, (tile, item) -> {
+            tile.entity.items().clear();
+            tile.<UnloaderEntity>ent().sortItem = item;
+        });
+
+        configClear(tile -> tile.<UnloaderEntity>ent().sortItem = null);
     }
 
     @Override
     public void drawRequestConfig(BuildRequest req, Eachable<BuildRequest> list){
-        drawRequestConfigCenter(req, content.item(req.config), "unloader-center");
+        drawRequestConfigCenter(req, (Item)req.config, "unloader-center");
     }
 
     @Override
@@ -50,16 +55,10 @@ public class Unloader extends Block{
     @Override
     public void playerPlaced(Tile tile){
         if(lastItem != null){
-            tile.configure(lastItem.id);
+            tile.configure(lastItem);
         }
     }
 
-    @Override
-    public void configured(Tile tile, Playerc player, Object value){
-        tile.entity.items().clear();
-        tile.<UnloaderEntity>ent().sortItem = content.item(value);
-    }
-
     @Override
     public void update(Tile tile){
         UnloaderEntity entity = tile.ent();
@@ -123,19 +122,15 @@ public class Unloader extends Block{
 
     @Override
     public void buildConfiguration(Tile tile, Table table){
-        UnloaderEntity entity = tile.ent();
-        ItemSelection.buildTable(table, content.items(), () -> entity.sortItem, item -> {
-            lastItem = item;
-            tile.configure(item == null ? -1 : item.id);
-        });
+        ItemSelection.buildTable(table, content.items(), () -> tile.<UnloaderEntity>ent().sortItem, item -> tile.configure(lastItem = item));
     }
 
     public static class UnloaderEntity extends TileEntity{
         public Item sortItem = null;
 
         @Override
-        public int config(){
-            return sortItem == null ? -1 : sortItem.id;
+        public Item config(){
+            return sortItem;
         }
 
         @Override
diff --git a/core/src/mindustry/world/blocks/units/CommandCenter.java b/core/src/mindustry/world/blocks/units/CommandCenter.java
index 23e27bb48a..34a8ba5f4a 100644
--- a/core/src/mindustry/world/blocks/units/CommandCenter.java
+++ b/core/src/mindustry/world/blocks/units/CommandCenter.java
@@ -11,16 +11,14 @@ import arc.util.*;
 import arc.util.io.*;
 import mindustry.content.*;
 import mindustry.entities.*;
-import mindustry.gen.*;
 import mindustry.entities.units.*;
 import mindustry.game.EventType.*;
+import mindustry.gen.*;
 import mindustry.graphics.*;
 import mindustry.ui.*;
 import mindustry.world.*;
 import mindustry.world.meta.*;
 
-import java.io.*;
-
 import static mindustry.Vars.*;
 
 public class CommandCenter extends Block{
@@ -37,6 +35,21 @@ public class CommandCenter extends Block{
         solid = true;
         configurable = true;
         entityType = CommandCenterEntity::new;
+
+        config(Integer.class, (tile, value) -> {
+            UnitCommand command = UnitCommand.all[value];
+            ((CommandCenter)tile.block()).effect.at(tile);
+
+            for(Tile center : indexer.getAllied(tile.team(), BlockFlag.comandCenter)){
+                if(center.block() instanceof CommandCenter){
+                    CommandCenterEntity entity = center.ent();
+                    entity.command = command;
+                }
+            }
+
+            Groups.unit.each(t -> t.team() == tile.team(), u -> u.controller().command(command));
+            Events.fire(new CommandIssueEvent(tile, command));
+        });
     }
 
     @Override
@@ -102,27 +115,11 @@ public class CommandCenter extends Block{
         table.label(() -> entity.command.localized()).style(Styles.outlineLabel).center().growX().get().setAlignment(Align.center);
     }
 
-    @Override
-    public void configured(Tile tile, Playerc player, Object value){
-        UnitCommand command = UnitCommand.all[value];
-        ((CommandCenter)tile.block()).effect.at(tile);
-
-        for(Tile center : indexer.getAllied(tile.team(), BlockFlag.comandCenter)){
-            if(center.block() instanceof CommandCenter){
-                CommandCenterEntity entity = center.ent();
-                entity.command = command;
-            }
-        }
-
-        Groups.unit.each(t -> t.team() == tile.team(), u -> u.controller().command(command));
-        Events.fire(new CommandIssueEvent(tile, command));
-    }
-
     public class CommandCenterEntity extends TileEntity{
         public UnitCommand command = UnitCommand.attack;
 
         @Override
-        public int config(){
+        public Integer config(){
             return command.ordinal();
         }