diff --git a/annotations/src/main/java/mindustry/annotations/impl/EntityProcess.java b/annotations/src/main/java/mindustry/annotations/impl/EntityProcess.java
index c8b1739013..8af36efafc 100644
--- a/annotations/src/main/java/mindustry/annotations/impl/EntityProcess.java
+++ b/annotations/src/main/java/mindustry/annotations/impl/EntityProcess.java
@@ -335,6 +335,24 @@ public class EntityProcess extends BaseProcessor{
 
             idBuilder.addStaticBlock(idStore.build());
 
+            //create mock types of all components
+            for(Stype component : allComponents){
+
+
+                Array<Stype> dependencies = getDependencies(component);
+                Array<Stype> out = new Array<>();
+                out.add(component);
+                out.addAll(component.superclasses());
+                dependencies.each(dep -> {
+                    out.add(dep);
+                    out.addAll(dep.superclasses());
+                });
+
+                out.distinct();
+
+                Log.info("Dependencies of {0}:\n{1}\n\n", component, out.toString("\n", s -> "&lb> " + s));
+            }
+
             write(idBuilder);
         }else{
             //round 2: generate actual classes and implement interfaces
diff --git a/annotations/src/main/java/mindustry/annotations/util/Selement.java b/annotations/src/main/java/mindustry/annotations/util/Selement.java
index f4ec31a39b..12bf900c21 100644
--- a/annotations/src/main/java/mindustry/annotations/util/Selement.java
+++ b/annotations/src/main/java/mindustry/annotations/util/Selement.java
@@ -54,11 +54,11 @@ public class Selement<T extends Element>{
 
     @Override
     public int hashCode(){
-        return e.hashCode();
+        return toString().hashCode();
     }
 
     @Override
     public boolean equals(Object o){
-        return o != null && o.getClass() == getClass() && ((Selement)o).e.equals(e);
+        return o != null && toString().equals(o.toString());
     }
 }
diff --git a/annotations/src/main/java/mindustry/annotations/util/Stype.java b/annotations/src/main/java/mindustry/annotations/util/Stype.java
index 21d49c5c6a..0fc9672661 100644
--- a/annotations/src/main/java/mindustry/annotations/util/Stype.java
+++ b/annotations/src/main/java/mindustry/annotations/util/Stype.java
@@ -25,13 +25,7 @@ public class Stype extends Selement<TypeElement>{
     }
 
     public Array<Stype> superclasses(){
-        Array<Stype> out = new Array<>();
-        Stype sup = superclass();
-        while(!sup.name().equals("Object")){
-            out.add(sup);
-            sup = sup.superclass();
-        }
-        return out;
+        return Array.with(BaseProcessor.typeu.directSupertypes(mirror())).map(Stype::of);
     }
 
     public Stype superclass(){
diff --git a/annotations/src/main/resources/classids.properties b/annotations/src/main/resources/classids.properties
index 8df63669ff..462b3bb974 100644
--- a/annotations/src/main/resources/classids.properties
+++ b/annotations/src/main/resources/classids.properties
@@ -4,5 +4,6 @@ mindustry.entities.def.EntityDefs.DecalDef=1
 mindustry.entities.def.EntityDefs.EffectDef=2
 mindustry.entities.def.EntityDefs.TileDef=3
 mindustry.entities.def.EntityDefs.GenericUnitDef=5
+mindustry.entities.def.EntityDefs.GenericBuilderDef=6
 mindustry.entities.def.EntityDefs.BulletDef=0
 mindustry.entities.def.EntityDefs.PlayerDef=4
\ No newline at end of file
diff --git a/core/src/mindustry/core/NetClient.java b/core/src/mindustry/core/NetClient.java
index 1350db1854..70c1766a3a 100644
--- a/core/src/mindustry/core/NetClient.java
+++ b/core/src/mindustry/core/NetClient.java
@@ -508,11 +508,11 @@ public class NetClient implements ApplicationListener{
         if(timer.get(0, playerSyncTime)){
             BuildRequest[] requests;
             //limit to 10 to prevent buffer overflows
-            int usedRequests = Math.min(player.buildQueue().size, 10);
+            int usedRequests = Math.min(player.builder().requests().size, 10);
 
             requests = new BuildRequest[usedRequests];
             for(int i = 0; i < usedRequests; i++){
-                requests[i] = player.buildQueue().get(i);
+                requests[i] = player.builder().requests().get(i);
             }
 
             Call.onClientShapshot(lastSent++, player.x, player.y,
diff --git a/core/src/mindustry/core/NetServer.java b/core/src/mindustry/core/NetServer.java
index 5d20bc2b13..2fe65a43e3 100644
--- a/core/src/mindustry/core/NetServer.java
+++ b/core/src/mindustry/core/NetServer.java
@@ -513,7 +513,7 @@ public class NetServer implements ApplicationListener{
         player.isBoosting = boosting;
         player.isShooting = shooting;
         player.isBuilding = building;
-        player.buildQueue().clear();
+        player.builder().requests().clear();
 
         for(BuildRequest req : requests){
             if(req == null) continue;
@@ -536,7 +536,7 @@ public class NetServer implements ApplicationListener{
                 connection.rejectedRequests.add(req);
                 continue;
             }
-            player.buildQueue().addLast(req);
+            player.builder().requests().addLast(req);
         }
 
         connection.rejectedRequests.clear();
diff --git a/core/src/mindustry/entities/def/EntityComps.java b/core/src/mindustry/entities/def/EntityComps.java
index 8b42a06c58..d52ff89b15 100644
--- a/core/src/mindustry/entities/def/EntityComps.java
+++ b/core/src/mindustry/entities/def/EntityComps.java
@@ -1,6 +1,7 @@
 package mindustry.entities.def;
 
 import arc.*;
+import arc.func.*;
 import arc.graphics.*;
 import arc.graphics.g2d.*;
 import arc.math.*;
@@ -677,7 +678,17 @@ public class EntityComps{
 
     @Component
     abstract static class PlayerComp implements UnitController, Entityc, Syncc, Timerc{
+        //TODO mock these properly
         private static final Unitc noUnit = GenericUnitEntity.create();
+        private static final Builderc noBuilder = GenericBuilderEntity.create().with(s -> s.requests(new Queue<BuildRequest>(){
+            @Override
+            public void addLast(BuildRequest object){
+            }
+
+            @Override
+            public void addFirst(BuildRequest object){
+            }
+        }));
 
         @NonNull @ReadOnly Unitc unit = noUnit;
 
@@ -691,6 +702,14 @@ public class EntityComps{
         @Nullable String lastText;
         float textFadeTime;
 
+        public boolean isBuilder(){
+            return unit instanceof Builderc;
+        }
+
+        public boolean isMiner(){
+            return unit instanceof Minerc;
+        }
+
         public @Nullable Tilec closestCore(){
             return state.teams.closestCore(x(), y(), team);
         }
@@ -732,6 +751,13 @@ public class EntityComps{
             return unit;
         }
 
+        public Builderc builder(){
+            if(!(unit instanceof Builderc)){
+                return noBuilder;
+            }
+            return (Builderc)unit;
+        }
+
         public void unit(Unitc unit){
             if(unit == null) throw new IllegalArgumentException("Unit cannot be null. Use clearUnit() instead.");
             this.unit = unit;
@@ -1287,7 +1313,7 @@ public class EntityComps{
 
         transient float x, y, rotation;
 
-        @ReadOnly Queue<BuildRequest> requests = new Queue<>();
+        Queue<BuildRequest> requests = new Queue<>();
         float buildSpeed = 1f;
         //boolean building;
 
@@ -1782,6 +1808,11 @@ public class EntityComps{
             return (T)this;
         }
 
+        <T> T with(Cons<T> cons){
+            cons.get((T)this);
+            return (T)this;
+        }
+
         @InternalImpl
         abstract int classId();
 
diff --git a/core/src/mindustry/entities/def/EntityDefs.java b/core/src/mindustry/entities/def/EntityDefs.java
index f179911a49..3c9122c808 100644
--- a/core/src/mindustry/entities/def/EntityDefs.java
+++ b/core/src/mindustry/entities/def/EntityDefs.java
@@ -22,4 +22,7 @@ class EntityDefs{
 
     @EntityDef({UnitComp.class})
     class GenericUnitDef{}
+
+    @EntityDef({BuilderComp.class})
+    class GenericBuilderDef{}
 }
diff --git a/core/src/mindustry/input/DesktopInput.java b/core/src/mindustry/input/DesktopInput.java
index 583ba5a644..f777b73e44 100644
--- a/core/src/mindustry/input/DesktopInput.java
+++ b/core/src/mindustry/input/DesktopInput.java
@@ -376,7 +376,7 @@ public class DesktopInput extends InputHandler{
                 deleting = true;
             }else if(selected != null){
                 //only begin shooting if there's no cursor event
-                if(!tileTapped(selected) && !tryTapPlayer(Core.input.mouseWorld().x, Core.input.mouseWorld().y) && (player.buildQueue().size == 0 || !player.isBuilding) && !droppingItem &&
+                if(!tileTapped(selected) && !tryTapPlayer(Core.input.mouseWorld().x, Core.input.mouseWorld().y) && (player.builder().requests().size == 0 || !player.isBuilding) && !droppingItem &&
                 !tryBeginMine(selected) && player.getMineTile() == null && !Core.scene.hasKeyboard()){
                     player.isShooting = true;
                 }
@@ -400,7 +400,7 @@ public class DesktopInput extends InputHandler{
         if(Core.input.keyDown(Binding.select) && mode == none && !isPlacing() && deleting){
             BuildRequest req = getRequest(cursorX, cursorY);
             if(req != null && req.breaking){
-                player.buildQueue().remove(req);
+                player.builder().requests().remove(req);
             }
         }else{
             deleting = false;
@@ -431,7 +431,7 @@ public class DesktopInput extends InputHandler{
 
             if(sreq != null){
                 if(getRequest(sreq.x, sreq.y, sreq.block.size, sreq) != null){
-                    player.buildQueue().remove(sreq, true);
+                    player.builder().requests().remove(sreq, true);
                 }
                 sreq = null;
             }
diff --git a/core/src/mindustry/input/InputHandler.java b/core/src/mindustry/input/InputHandler.java
index 7c7c0eef8f..e4bfbfcfae 100644
--- a/core/src/mindustry/input/InputHandler.java
+++ b/core/src/mindustry/input/InputHandler.java
@@ -96,17 +96,17 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
 
     @Remote(variants = Variant.one)
     public static void removeQueueBlock(int x, int y, boolean breaking){
-        player.removeRequest(x, y, breaking);
+        player.builder().removeBuild(x, y, breaking);
     }
 
     @Remote(targets = Loc.client, called = Loc.server)
     public static void dropItem(Playerc player, float angle){
-        if(net.server() && player.item().amount <= 0){
+        if(net.server() && player.unit().stack().amount <= 0){
             throw new ValidateException(player, "Player cannot drop an item.");
         }
 
-        Fx.dropItem.at(player.x, player.y, angle, Color.white, player.item().item);
-        player.clearItem();
+        Fx.dropItem.at(player.x(), player.y(), angle, Color.white, player.unit().item());
+        player.unit().clearItem();
     }
 
     @Remote(targets = Loc.both, called = Loc.server, forward = true, unreliable = true)
@@ -127,53 +127,34 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
     @Remote(targets = Loc.both, forward = true, called = Loc.server)
     public static void transferInventory(Playerc player, Tile tile){
         if(player == null) return;
-        if(net.server() && (player.item().amount <= 0 || player.isTransferring|| !Units.canInteract(player, tile) ||
+        if(net.server() && (player.unit().stack().amount <= 0 || !Units.canInteract(player, tile) ||
             !netServer.admins.allowAction(player, ActionType.depositItem, tile, action -> {
-                action.itemAmount = player.item().amount;
-                action.item = player.item().item;
+                action.itemAmount = player.unit().stack().amount;
+                action.item = player.unit().item();
             }))){
             throw new ValidateException(player, "Player cannot transfer an item.");
         }
 
         if(tile.entity == null) return;
 
-        player.isTransferring = true;
-
-        Item item = player.item().item;
-        int amount = player.item().amount;
-        int accepted = tile.block().acceptStack(item, amount, tile, player);
-        player.item().amount -= accepted;
+        Item item = player.unit().item();
+        int amount = player.unit().stack().amount;
+        int accepted = tile.block().acceptStack(item, amount, tile, player.unit());
+        player.unit().stack().amount -= accepted;
 
         int sent = Mathf.clamp(accepted / 4, 1, 8);
-        int removed = accepted / sent;
-        int[] remaining = {accepted, accepted};
         Block block = tile.block();
 
         Core.app.post(() -> Events.fire(new DepositEvent(tile, player, item, accepted)));
 
         for(int i = 0; i < sent; i++){
-            boolean end = i == sent - 1;
-            Time.run(i * 3, () -> {
-                tile.block().getStackOffset(item, tile, stackTrns);
+            tile.block().getStackOffset(item, tile, stackTrns);
 
-                ItemTransfer.create(item,
-                player.x + Angles.trnsx(player.rotation + 180f, backTrns), player.y + Angles.trnsy(player.rotation + 180f, backTrns),
-                new Vec2(tile.drawx() + stackTrns.x, tile.drawy() + stackTrns.y), () -> {
-                    if(tile.block() != block || tile.entity == null || tile.entity.items() == null) return;
+            createItemTransfer(item, player.x() + Angles.trnsx(player.unit().rotation() + 180f, backTrns), player.y() + Angles.trnsy(player.unit().rotation() + 180f, backTrns),
+            new Vec2(tile.drawx() + stackTrns.x, tile.drawy() + stackTrns.y), () -> {
+                if(tile.block() != block || tile.entity == null || tile.entity.items() == null) return;
 
-                    tile.block().handleStack(item, removed, tile, player);
-                    remaining[1] -= removed;
-
-                    if(end && remaining[1] > 0){
-                        tile.block().handleStack(item, remaining[1], tile, player);
-                    }
-                });
-
-                remaining[0] -= removed;
-
-                if(end){
-                    player.isTransferring = false;
-                }
+                tile.block().handleStack(item, accepted, tile, player.unit());
             });
         }
     }
@@ -199,7 +180,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
 
     public Eachable<BuildRequest> allRequests(){
         return cons -> {
-            for(BuildRequest request : player.buildQueue()) cons.get(request);
+            for(BuildRequest request : player.builder().requests()) cons.get(request);
             for(BuildRequest request : selectRequests) cons.get(request);
             for(BuildRequest request : lineRequests) cons.get(request);
         };
@@ -275,7 +256,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
     }
 
     public void useSchematic(Schematic schem){
-        selectRequests.addAll(schematics.toRequests(schem, world.toTile(player.x), world.toTile(player.y)));
+        selectRequests.addAll(schematics.toRequests(schem, player.tileX(), player.tileY()));
     }
 
     protected void showSchematicSave(){
@@ -401,7 +382,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
             return r2.overlaps(r1);
         };
 
-        for(BuildRequest req : player.buildQueue()){
+        for(BuildRequest req : player.builder().requests()){
             if(test.get(req)) return req;
         }
 
@@ -430,7 +411,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
         Draw.color(Pal.remove);
         Lines.stroke(1f);
 
-        for(BuildRequest req : player.buildQueue()){
+        for(BuildRequest req : player.builder().requests()){
             if(req.breaking) continue;
             if(req.bounds(Tmp.r2).overlaps(Tmp.r1)){
                 drawBreaking(req);
@@ -491,7 +472,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
                 if(copy.hasConfig && copy.block.posConfig){
                     copy.config = Pos.get(Pos.x(copy.config) + copy.x - copy.originalX, Pos.y(copy.config) + copy.y - copy.originalY);
                 }
-                player.addBuildRequest(copy);
+                player.builder().addBuild(copy);
             }
         }
     }
@@ -535,7 +516,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
         //remove build requests
         Tmp.r1.set(result.x * tilesize, result.y * tilesize, (result.x2 - result.x) * tilesize, (result.y2 - result.y) * tilesize);
 
-        Iterator<BuildRequest> it = player.buildQueue().iterator();
+        Iterator<BuildRequest> it = player.builder().requests().iterator();
         while(it.hasNext()){
             BuildRequest req = it.next();
             if(!req.breaking && req.bounds(Tmp.r2).overlaps(Tmp.r1)){
@@ -646,7 +627,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
     }
 
     boolean canTapPlayer(float x, float y){
-        return Mathf.dst(x, y, player.x, player.y) <= playerSelectRange && player.item().amount > 0;
+        return Mathf.dst(x, y, player.x, player.y) <= playerSelectRange && player.unit().stack().amount > 0;
     }
 
     /** Tries to begin mining a tile, returns true if successful. */
@@ -663,7 +644,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
         return !Core.scene.hasMouse()
         && tile.drop() != null && tile.drop().hardness <= player.mech.drillPower
         && !(tile.floor().playerUnmineable && tile.overlay().itemDrop == null)
-        && player.acceptsItem(tile.drop())
+        && player.unit().acceptsItem(tile.drop())
         && tile.block() == Blocks.air && player.dst(tile.worldx(), tile.worldy()) <= Playerc.mineDistance;
     }
 
@@ -749,10 +730,6 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
 
             frag.add();
         }
-
-        if(player != null){
-            player.isBuilding = true;
-        }
     }
 
     public boolean canShoot(){
@@ -768,16 +745,16 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
     }
 
     public void tryDropItems(Tile tile, float x, float y){
-        if(!droppingItem || player.item().amount <= 0 || canTapPlayer(x, y) || state.isPaused() ){
+        if(!droppingItem || player.unit().stack().amount <= 0 || canTapPlayer(x, y) || state.isPaused() ){
             droppingItem = false;
             return;
         }
 
         droppingItem = false;
 
-        ItemStack stack = player.item();
+        ItemStack stack = player.unit().stack();
 
-        if(tile.block().acceptStack(stack.item, stack.amount, tile, player) > 0 && tile.interactable(player.team()) && tile.block().hasItems && player.item().amount > 0 && !player.isTransferring && tile.interactable(player.team())){
+        if(tile.block().acceptStack(stack.item, stack.amount, tile, player.unit()) > 0 && tile.interactable(player.team()) && tile.block().hasItems && player.unit().stack().amount > 0 && tile.interactable(player.team())){
             Call.transferInventory(player, tile);
         }else{
             Call.dropItem(player.angleTo(x, y));
@@ -801,7 +778,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
     }
 
     public boolean validPlace(int x, int y, Block type, int rotation, BuildRequest ignore){
-        for(BuildRequest req : player.buildQueue()){
+        for(BuildRequest req : player.builder().requests()){
             if(req != ignore
                     && !req.breaking
                     && req.block.bounds(req.x, req.y, Tmp.r1).overlaps(type.bounds(x, y, Tmp.r2))
@@ -819,14 +796,14 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
     public void placeBlock(int x, int y, Block block, int rotation){
         BuildRequest req = getRequest(x, y);
         if(req != null){
-            player.buildQueue().remove(req);
+            player.builder().requests().remove(req);
         }
-        player.addBuildRequest(new BuildRequest(x, y, rotation, block));
+        player.builder().addBuild(new BuildRequest(x, y, rotation, block));
     }
 
     public void breakBlock(int x, int y){
         Tile tile = world.ltile(x, y);
-        player.addBuildRequest(new BuildRequest(tile.x, tile.y));
+        player.builder().addBuild(new BuildRequest(tile.x, tile.y));
     }
 
     public void drawArrow(Block block, int x, int y, int rotation){
diff --git a/core/src/mindustry/input/MobileInput.java b/core/src/mindustry/input/MobileInput.java
index 02fff918a5..80000d4828 100644
--- a/core/src/mindustry/input/MobileInput.java
+++ b/core/src/mindustry/input/MobileInput.java
@@ -109,7 +109,7 @@ public class MobileInput extends InputHandler implements GestureListener{
             }
         }
 
-        for(BuildRequest req : player.buildQueue()){
+        for(BuildRequest req : player.builder().requests()){
             Tile other = world.tile(req.x, req.y);
 
             if(other == null || req.breaking) continue;
@@ -224,10 +224,10 @@ public class MobileInput extends InputHandler implements GestureListener{
                             }
 
                             if(other == null){
-                                player.addBuildRequest(copy);
+                                player.builder().addBuild(copy);
                             }else if(!other.breaking && other.x == request.x && other.y == request.y && other.block.size == request.block.size){
-                                player.buildQueue().remove(other);
-                                player.addBuildRequest(copy);
+                                player.builder().requests().remove(other);
+                                player.builder().addBuild(copy);
                             }
                         }
 
diff --git a/core/src/mindustry/ui/fragments/PlacementFragment.java b/core/src/mindustry/ui/fragments/PlacementFragment.java
index 22ba8b4517..da31fb1f5a 100644
--- a/core/src/mindustry/ui/fragments/PlacementFragment.java
+++ b/core/src/mindustry/ui/fragments/PlacementFragment.java
@@ -89,11 +89,11 @@ public class PlacementFragment extends Fragment{
     boolean gridUpdate(InputHandler input){
         scrollPositions.put(currentCategory, blockPane.getScrollY());
 
-        if(Core.input.keyDown(Binding.pick)){ //mouse eyedropper select
+        if(Core.input.keyDown(Binding.pick) && player.isBuilder()){ //mouse eyedropper select
             Tile tile = world.ltileWorld(Core.input.mouseWorld().x, Core.input.mouseWorld().y);
             Block tryRecipe = tile == null ? null : tile.block();
 
-            for(BuildRequest req : player.buildQueue()){
+            for(BuildRequest req : player.builder().requests()){
                 if(!req.breaking && req.block.bounds(req.x, req.y, Tmp.r1).contains(Core.input.mouseWorld())){
                     tryRecipe = req.block;
                     break;
diff --git a/core/src/mindustry/world/blocks/BuildBlock.java b/core/src/mindustry/world/blocks/BuildBlock.java
index 7680b406a3..7cb2a4917f 100644
--- a/core/src/mindustry/world/blocks/BuildBlock.java
+++ b/core/src/mindustry/world/blocks/BuildBlock.java
@@ -147,7 +147,7 @@ public class BuildBlock extends Block{
                 player.isBuilding = true;
             }
             //player.clearBuilding();
-            player.addBuildRequest(new BuildRequest(tile.x, tile.y, tile.rotation(), entity.cblock), false);
+            player.builder().addBuild(new BuildRequest(tile.x, tile.y, tile.rotation(), entity.cblock), false);
         }*/
     }
 
diff --git a/gradle.properties b/gradle.properties
index 30403179dc..5d8543ab5e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,3 +1,3 @@
 org.gradle.daemon=true
 org.gradle.jvmargs=-Xms256m -Xmx1024m
-archash=50973a6e5c025f6f9573206d5f49f03d3a4ee914
+archash=e9bd792158afc4f72017d9bed995e448934e472e