diff --git a/core/src/io/anuke/mindustry/core/Renderer.java b/core/src/io/anuke/mindustry/core/Renderer.java
index 3727a9044a..593598b99e 100644
--- a/core/src/io/anuke/mindustry/core/Renderer.java
+++ b/core/src/io/anuke/mindustry/core/Renderer.java
@@ -338,7 +338,7 @@ public class Renderer extends RendererModule{
 			Tile tile = ui.configfrag.getSelectedTile();
 			Draw.color(Colors.get("accent"));
 			Lines.stroke(1f);
-			Lines.square(tile.worldx() + tile.block().getPlaceOffset().x, tile.worldy() + tile.block().getPlaceOffset().y,
+			Lines.square(tile.drawx(), tile.drawy(),
 					tile.block().width * Vars.tilesize / 2f + 1f);
 			Draw.reset();
 		}
@@ -390,10 +390,8 @@ public class Renderer extends RendererModule{
 				if(tile.isLinked())
 					target = tile.getLinked();
 
-				Vector2 offset = target.block().getPlaceOffset();
-
 				if(target.entity != null)
-					drawHealth(target.entity.x + offset.x, target.entity.y - 3f - target.block().height / 2f * Vars.tilesize + offset.y, target.entity.health, target.entity.maxhealth);
+					drawHealth(target.drawx(), target.drawy() - 3f - target.block().height / 2f * Vars.tilesize, target.entity.health, target.entity.maxhealth);
 
 				target.block().drawSelect(target);
 			}
diff --git a/core/src/io/anuke/mindustry/input/PlaceMode.java b/core/src/io/anuke/mindustry/input/PlaceMode.java
index 5f8ad129b3..a7806eff7e 100644
--- a/core/src/io/anuke/mindustry/input/PlaceMode.java
+++ b/core/src/io/anuke/mindustry/input/PlaceMode.java
@@ -92,12 +92,11 @@ public enum PlaceMode{
 			if(tile != null && control.getInput().validBreak(tilex, tiley)){
 				if(tile.isLinked())
 					tile = tile.getLinked();
-				Vector2 offset = tile.block().getPlaceOffset();
 				float fract = control.getInput().breaktime / tile.getBreakTime();
 				
 				if(android && control.getInput().breaktime > 0){
 					Draw.color(Colors.get("breakStart"), Colors.get("break"), fract);
-					Lines.poly(tile.worldx() + offset.x, tile.worldy() + offset.y, 25, 4 + (1f - fract) * 26);
+					Lines.poly(tile.drawx(), tile.drawy(), 25, 4 + (1f - fract) * 26);
 				}
 				Draw.reset();
 			}
@@ -157,8 +156,7 @@ public enum PlaceMode{
 					if(tile != null && tile.getLinked() != null)
 						tile = tile.getLinked();
 					if(tile != null && control.getInput().validBreak(tile.x, tile.y)){
-						Vector2 offset = tile.block().getPlaceOffset();
-						Lines.crect(tile.worldx() + offset.x, tile.worldy() + offset.y,
+						Lines.crect(tile.drawx(), tile.drawy(),
 								tile.block().width * t, tile.block().height * t);
 					}
 				}
diff --git a/core/src/io/anuke/mindustry/net/Net.java b/core/src/io/anuke/mindustry/net/Net.java
index f7f663c910..4dc73ae8e5 100644
--- a/core/src/io/anuke/mindustry/net/Net.java
+++ b/core/src/io/anuke/mindustry/net/Net.java
@@ -4,7 +4,6 @@ import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.utils.Array;
 import com.badlogic.gdx.utils.IntMap;
 import com.badlogic.gdx.utils.ObjectMap;
-import com.badlogic.gdx.utils.async.AsyncExecutor;
 import io.anuke.mindustry.Mindustry;
 import io.anuke.mindustry.net.Packet.ImportantPacket;
 import io.anuke.mindustry.net.Packets.KickReason;
@@ -30,7 +29,6 @@ public class Net{
 	private static ServerProvider serverProvider;
 
 	private static IntMap<StreamBuilder> streams = new IntMap<>();
-	private static AsyncExecutor executor = new AsyncExecutor(4);
 
 	/**Sets the client loaded status, or whether it will recieve normal packets from the server.*/
 	public static void setClientLoaded(boolean loaded){
@@ -71,13 +69,7 @@ public class Net{
 	/**Starts discovering servers on a different thread. Does not work with GWT.
 	 * Callback is run on the main libGDX thread.*/
 	public static void discoverServers(Consumer<Array<Host>> cons){
-		executor.submit(() -> {
-			Array<Host> arr = clientProvider.discover();
-			Gdx.app.postRunnable(() -> {
-				cons.accept(arr);
-			});
-			return false;
-		});
+		clientProvider.discover(cons);
 	}
 
 	/**Kick a specified connection from the server.*/
@@ -203,13 +195,8 @@ public class Net{
 	public static void dispose(){
 		if(clientProvider != null) clientProvider.dispose();
 		if(serverProvider != null) serverProvider.dispose();
-		executor.dispose();
-	}
-
-	/**Register classes that will be sent. Must be done for all classes.*/
-	public static void registerClasses(Class<?>... classes){
-		clientProvider.register(classes);
-		serverProvider.register(classes);
+		clientProvider = null;
+		serverProvider = null;
 	}
 
 	/**Client implementation.*/
@@ -224,12 +211,11 @@ public class Net{
 		int getPing();
 		/**Disconnect from the server.*/
 		void disconnect();
-        /**Discover servers. This should block for a certain amount of time, and will most likely be run in a different thread.*/
-        Array<Host> discover();
+        /**Discover servers. This should run the callback regardless of whether any servers are found. Should not block.
+		 * Callback should be run on libGDX main thread.*/
+        void discover(Consumer<Array<Host>> callback);
         /**Ping a host. If an error occured, failed() should be called with the exception. */
         void pingHost(String address, int port, Consumer<Host> valid, Consumer<IOException> failed);
-		/**Register classes to be sent.*/
-		void register(Class<?>... types);
 		/**Close all connections.*/
 		void dispose();
 	}
@@ -254,8 +240,6 @@ public class Net{
 		void kick(int connection, KickReason reason);
 		/**Returns the ping for a certain connection.*/
 		int getPingFor(NetConnection connection);
-		/**Register classes to be sent.*/
-		void register(Class<?>... types);
 		/**Close all connections.*/
 		void dispose();
 	}
diff --git a/core/src/io/anuke/mindustry/ui/fragments/BlockConfigFragment.java b/core/src/io/anuke/mindustry/ui/fragments/BlockConfigFragment.java
index 76c0ca49ab..d9e76f04a3 100644
--- a/core/src/io/anuke/mindustry/ui/fragments/BlockConfigFragment.java
+++ b/core/src/io/anuke/mindustry/ui/fragments/BlockConfigFragment.java
@@ -42,7 +42,7 @@ public class BlockConfigFragment implements  Fragment {
 
         table.update(()->{
             table.setOrigin(Align.center);
-            Vector2 pos = Graphics.screen(tile.worldx() + tile.block().getPlaceOffset().x, tile.worldy() + tile.block().getPlaceOffset().y);
+            Vector2 pos = Graphics.screen(tile.drawx(), tile.drawy());
             table.setPosition(pos.x, pos.y, Align.center);
             if(configTile == null || configTile.block() == Blocks.air){
                 hideConfig();
diff --git a/core/src/io/anuke/mindustry/ui/fragments/HudFragment.java b/core/src/io/anuke/mindustry/ui/fragments/HudFragment.java
index 5381ce95f1..140b088f63 100644
--- a/core/src/io/anuke/mindustry/ui/fragments/HudFragment.java
+++ b/core/src/io/anuke/mindustry/ui/fragments/HudFragment.java
@@ -95,7 +95,7 @@ public class HudFragment implements Fragment{
 				visible(() -> !GameState.is(State.menu));
 
 				Label fps = new Label(() -> (Settings.getBool("fps") ? (Gdx.graphics.getFramesPerSecond() + " FPS") +
-						(Net.active() ? " / Ping: " + Net.getPing() : "") : ""));
+						(Net.active() && !Vars.gwt ? " / Ping: " + Net.getPing() : "") : ""));
 				row();
 				add(fps).size(-1);
 
diff --git a/core/src/io/anuke/mindustry/world/Block.java b/core/src/io/anuke/mindustry/world/Block.java
index cd3988893d..893622b187 100644
--- a/core/src/io/anuke/mindustry/world/Block.java
+++ b/core/src/io/anuke/mindustry/world/Block.java
@@ -245,9 +245,7 @@ public class Block{
 					tile.worldx(), tile.worldy(), rotate ? tile.getRotation() * 90 : 0);
 		}else{
 			//if multiblock, make sure to draw even block sizes offset, since the core block is at the BOTTOM LEFT
-			Vector2 offset = getPlaceOffset();
-			
-			Draw.rect(name(), tile.worldx() + offset.x, tile.worldy() + offset.y);
+			Draw.rect(name(), tile.drawx(), tile.drawy());
 		}
 		
 		//update the tile entity through the draw method, only if it's an entity without updating
diff --git a/core/src/io/anuke/mindustry/world/Tile.java b/core/src/io/anuke/mindustry/world/Tile.java
index 89326ca590..1bf628b514 100644
--- a/core/src/io/anuke/mindustry/world/Tile.java
+++ b/core/src/io/anuke/mindustry/world/Tile.java
@@ -96,6 +96,14 @@ public class Tile{
 	public float worldy(){
 		return y * tilesize;
 	}
+
+	public float drawx(){
+		return block().getPlaceOffset().x + worldx();
+	}
+
+	public float drawy(){
+		return block().getPlaceOffset().y + worldy();
+	}
 	
 	public Block floor(){
 		return Block.getByID(getFloorID());
diff --git a/core/src/io/anuke/mindustry/world/blocks/WeaponBlocks.java b/core/src/io/anuke/mindustry/world/blocks/WeaponBlocks.java
index c65c074ea0..4361571f87 100644
--- a/core/src/io/anuke/mindustry/world/blocks/WeaponBlocks.java
+++ b/core/src/io/anuke/mindustry/world/blocks/WeaponBlocks.java
@@ -1,8 +1,6 @@
 package io.anuke.mindustry.world.blocks;
 
 import com.badlogic.gdx.graphics.Color;
-import com.badlogic.gdx.math.Vector2;
-
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.BulletType;
 import io.anuke.mindustry.entities.effect.TeslaOrb;
@@ -177,7 +175,6 @@ public class WeaponBlocks{
 		@Override
 		protected void shoot(Tile tile){
 			TurretEntity entity = tile.entity();
-			Vector2 offset = getPlaceOffset();
 			
 			float len = 8;
 			float space = 3.5f;
@@ -185,8 +182,8 @@ public class WeaponBlocks{
 			for(int i = -1; i < 1; i ++){
 				Angles.vector.set(len, Mathf.sign(i) * space).rotate(entity.rotation);
 				bullet(tile, entity.rotation);
-				Effects.effect(shootEffect, tile.worldx() + Angles.x() + offset.x, 
-						tile.worldy()+ Angles.y() + offset.y, entity.rotation);
+				Effects.effect(shootEffect, tile.drawx() + Angles.x(),
+						tile.drawy()+ Angles.y(), entity.rotation);
 			}
 			
 			Effects.shake(1f, 1f, tile.worldx(), tile.worldy());
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/PowerBlock.java b/core/src/io/anuke/mindustry/world/blocks/types/PowerBlock.java
index 3ab9e0d569..558cde9c3a 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/PowerBlock.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/PowerBlock.java
@@ -1,19 +1,17 @@
 package io.anuke.mindustry.world.blocks.types;
 
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.io.IOException;
-
 import com.badlogic.gdx.graphics.Color;
-import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.utils.Array;
-
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.TileEntity;
 import io.anuke.mindustry.world.Block;
 import io.anuke.mindustry.world.Tile;
 import io.anuke.ucore.util.Mathf;
 
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
 public abstract class PowerBlock extends Block implements PowerAcceptor{
 	public float powerCapacity = 10f;
 	public float voltage = 0.001f;
@@ -38,10 +36,8 @@ public abstract class PowerBlock extends Block implements PowerAcceptor{
 		if(fract > 0)
 			fract = Mathf.clamp(fract + 0.2f, 0.24f, 1f);
 		
-		Vector2 offset = getPlaceOffset();
-		
-		Vars.renderer.drawBar(Color.YELLOW, tile.worldx() + offset.x, 
-				tile.worldy() + Vars.tilesize * height/2f + 2 + offset.y, fract);
+		Vars.renderer.drawBar(Color.YELLOW, tile.drawx(),
+				tile.drawy() + Vars.tilesize * height/2f + 2, fract);
 	}
 	
 	/**Tries adding all the power with no remainder, returns success.*/
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/Door.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/Door.java
index eef852e446..4d370c8240 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/Door.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/Door.java
@@ -1,18 +1,17 @@
 package io.anuke.mindustry.world.blocks.types.defense;
 
 import com.badlogic.gdx.math.Rectangle;
-import com.badlogic.gdx.math.Vector2;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.TileEntity;
 import io.anuke.mindustry.graphics.Fx;
 import io.anuke.mindustry.world.Block;
 import io.anuke.mindustry.world.Tile;
 import io.anuke.mindustry.world.blocks.types.Wall;
-import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.core.Effects;
 import io.anuke.ucore.core.Effects.Effect;
 import io.anuke.ucore.entities.Entities;
 import io.anuke.ucore.entities.SolidEntity;
+import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.util.Tmp;
 
 import java.io.DataInputStream;
@@ -36,12 +35,10 @@ public class Door extends Wall{
 	public void draw(Tile tile){
 		DoorEntity entity = tile.entity();
 		
-		Vector2 offset = getPlaceOffset();
-		
 		if(!entity.open){
-			Draw.rect(name, tile.worldx() + offset.x, tile.worldy() + offset.y);
+			Draw.rect(name, tile.drawx(), tile.drawy());
 		}else{
-			Draw.rect(name + "-open", tile.worldx() + offset.x, tile.worldy() + offset.y);
+			Draw.rect(name + "-open", tile.drawx(), tile.drawy());
 		}
 	}
 	
@@ -59,13 +56,11 @@ public class Door extends Wall{
 			return;
 		}
 		
-		Vector2 offset = getPlaceOffset();
-		
 		entity.open = !entity.open;
 		if(!entity.open){
-			Effects.effect(closefx, tile.worldx() + offset.x, tile.worldy() + offset.y);
+			Effects.effect(closefx, tile.drawx(), tile.drawy());
 		}else{
-			Effects.effect(openfx, tile.worldx() + offset.x, tile.worldy() + offset.y);
+			Effects.effect(openfx, tile.drawx(), tile.drawy());
 		}
 	}
 	
@@ -73,8 +68,7 @@ public class Door extends Wall{
 		int x = tile.x, y = tile.y;
 		Block type = tile.block();
 		Tmp.r2.setSize(type.width * Vars.tilesize, type.height * Vars.tilesize);
-		Vector2 offset = type.getPlaceOffset();
-		Tmp.r2.setCenter(offset.x + x * Vars.tilesize, offset.y + y * Vars.tilesize);
+		Tmp.r2.setCenter(tile.drawx(), tile.drawy());
 		
 		for(SolidEntity e : Entities.getNearby(Vars.control.enemyGroup, x * tilesize, y * tilesize, tilesize * 2f)){
 			Rectangle rect = e.hitbox.getRect(e.x, e.y);
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/PowerTurret.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/PowerTurret.java
index c36a22e2e0..213fbff4f9 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/PowerTurret.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/PowerTurret.java
@@ -1,13 +1,7 @@
 package io.anuke.mindustry.world.blocks.types.defense;
 
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.io.IOException;
-
 import com.badlogic.gdx.graphics.Color;
-import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.utils.Array;
-
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.TileEntity;
 import io.anuke.mindustry.resource.Item;
@@ -18,6 +12,10 @@ import io.anuke.ucore.graphics.Lines;
 import io.anuke.ucore.util.Mathf;
 import io.anuke.ucore.util.Strings;
 
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
 public class PowerTurret extends Turret implements PowerAcceptor{
 	public float powerCapacity = 20f;
 	public float powerUsed = 0.5f;
@@ -36,25 +34,21 @@ public class PowerTurret extends Turret implements PowerAcceptor{
 	
 	@Override
 	public void drawSelect(Tile tile){
-		Vector2 offset = getPlaceOffset();
-		
 		Draw.color(Color.GREEN);
-		Lines.dashCircle(tile.worldx() + offset.x, tile.worldy() + offset.y, range);
+		Lines.dashCircle(tile.drawx(), tile.drawy(), range);
 		Draw.reset();
 		
 		drawPowerBar(tile);
 	}
 	
 	public void drawPowerBar(Tile tile){
-		Vector2 offset = getPlaceOffset();
-		
 		PowerTurretEntity entity = tile.entity();
 		
 		float fract = (float)entity.power / powerCapacity;
 		if(fract > 0)
 			fract = Mathf.clamp(fract, 0.24f, 1f);
 		
-		Vars.renderer.drawBar(Color.YELLOW, tile.worldx() + offset.x, tile.worldy() + 6 + offset.y, fract);
+		Vars.renderer.drawBar(Color.YELLOW, tile.drawx(), tile.drawy() + 6, fract);
 	}
 	
 	@Override
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/RepairTurret.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/RepairTurret.java
index a371757bac..9d53c01476 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/RepairTurret.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/RepairTurret.java
@@ -2,14 +2,12 @@ package io.anuke.mindustry.world.blocks.types.defense;
 
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.math.MathUtils;
-import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.utils.Array;
-
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.world.Layer;
 import io.anuke.mindustry.world.Tile;
-import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.core.Timers;
+import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.graphics.Hue;
 import io.anuke.ucore.graphics.Lines;
 import io.anuke.ucore.util.Angles;
@@ -83,10 +81,9 @@ public class RepairTurret extends PowerTurret{
 		
 		if(entity.power >= powerUsed && entity.blockTarget != null && Angles.angleDist(entity.angleTo(entity.blockTarget), entity.rotation) < 10){
 			Tile targetTile = entity.blockTarget.tile;
-			Vector2 offset = targetTile.block().getPlaceOffset();
 			Angles.translation(entity.rotation, 4f);
-			float x = tile.worldx() + Angles.x(), y = tile.worldy() + Angles.y();
-			float x2 = entity.blockTarget.x + offset.x, y2 = entity.blockTarget.y + offset.y;
+			float x = tile.drawx() + Angles.x(), y = tile.drawy() + Angles.y();
+			float x2 = targetTile.drawx(), y2 = targetTile.drawy();
 
 			Draw.color(Hue.rgb(138, 244, 138, (MathUtils.sin(Timers.time()) + 1f) / 14f));
 			Draw.alpha(0.3f);
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/Turret.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/Turret.java
index 2cfa534af9..66a16112e2 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/Turret.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/Turret.java
@@ -1,7 +1,6 @@
 package io.anuke.mindustry.world.blocks.types.defense;
 
 import com.badlogic.gdx.graphics.Color;
-import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.utils.Array;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.Bullet;
@@ -13,11 +12,11 @@ import io.anuke.mindustry.resource.Item;
 import io.anuke.mindustry.world.Block;
 import io.anuke.mindustry.world.Layer;
 import io.anuke.mindustry.world.Tile;
-import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.core.Effects;
 import io.anuke.ucore.core.Effects.Effect;
 import io.anuke.ucore.core.Timers;
 import io.anuke.ucore.entities.Entities;
+import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.graphics.Lines;
 import io.anuke.ucore.util.Angles;
 import io.anuke.ucore.util.Mathf;
@@ -78,21 +77,18 @@ public class Turret extends Block{
 	
 	@Override
 	public void draw(Tile tile){
-		Vector2 offset = getPlaceOffset();
-		
 		if(isMultiblock()){
-			Draw.rect("block-" + width + "x" + height, tile.worldx() + offset.x, tile.worldy() + offset.y);
+			Draw.rect("block-" + width + "x" + height, tile.drawx(), tile.drawy());
 		}else{
-			Draw.rect("block", tile.worldx() + offset.x, tile.worldy() + offset.y);
+			Draw.rect("block", tile.drawx(), tile.drawy());
 		}
 	}
 	
 	@Override
 	public void drawLayer(Tile tile){
 		TurretEntity entity = tile.entity();
-		Vector2 offset = getPlaceOffset();
-		
-		Draw.rect(name(), tile.worldx() + offset.x, tile.worldy() + offset.y, entity.rotation - 90);
+
+		Draw.rect(name(), tile.drawx(), tile.drawy(), entity.rotation - 90);
 		
 		if(Vars.debug && drawDebug){
 			drawTargeting(tile);
@@ -101,10 +97,8 @@ public class Turret extends Block{
 	
 	@Override
 	public void drawSelect(Tile tile){
-		Vector2 offset = getPlaceOffset();
-		
 		Draw.color(Color.GREEN);
-		Lines.dashCircle(tile.worldx() + offset.x, tile.worldy() + offset.y, range);
+		Lines.dashCircle(tile.drawx(), tile.drawy(), range);
 		Draw.reset();
 		
 		TurretEntity entity = tile.entity();
@@ -113,7 +107,7 @@ public class Turret extends Block{
 		if(fract > 0)
 			fract = Mathf.clamp(fract, 0.24f, 1f);
 		
-		Vars.renderer.drawBar(Color.GREEN, tile.worldx() + offset.x, 2 + tile.worldy() + height/2f*Vars.tilesize + offset.y, fract);
+		Vars.renderer.drawBar(Color.GREEN, tile.drawx(), 2 + tile.drawy() + height/2f*Vars.tilesize, fract);
 	}
 	
 	@Override
@@ -221,7 +215,7 @@ public class Turret extends Block{
 	protected void shoot(Tile tile){
 		TurretEntity entity = tile.entity();
 		
-		Vector2 offset = getPlaceOffset();
+		
 		
 		Angles.translation(entity.rotation, width * Vars.tilesize / 2f);
 		
@@ -238,8 +232,8 @@ public class Turret extends Block{
 		}
 		
 		if(shootEffect != null){
-			Effects.effect(shootEffect, tile.worldx() + Angles.x() + offset.x, 
-				tile.worldy()+ Angles.y() + offset.y, entity.rotation);
+			Effects.effect(shootEffect, tile.drawx() + Angles.x(),
+				tile.drawy()+ Angles.y(), entity.rotation);
 		}
 		
 		if(shootShake > 0){
@@ -248,8 +242,7 @@ public class Turret extends Block{
 	}
 	
 	protected void bullet(Tile tile, float angle){
-		Vector2 offset = getPlaceOffset();
-		Bullet out = new Bullet(bullet, tile.entity, tile.worldx() + Angles.x() + offset.x, tile.worldy() + Angles.y() + offset.y, angle).add();
+		Bullet out = new Bullet(bullet, tile.entity, tile.drawx() + Angles.x(), tile.drawy() + Angles.y(), angle).add();
 		out.damage = (int)(bullet.damage*Vars.multiplier);
 	}
 	
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/production/LiquidCrafter.java b/core/src/io/anuke/mindustry/world/blocks/types/production/LiquidCrafter.java
index c0226c1cd8..4fe4464599 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/production/LiquidCrafter.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/production/LiquidCrafter.java
@@ -1,7 +1,6 @@
 package io.anuke.mindustry.world.blocks.types.production;
 
 import com.badlogic.gdx.graphics.Color;
-import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.utils.Array;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.TileEntity;
@@ -50,16 +49,14 @@ public class LiquidCrafter extends LiquidBlock{
 	
 	@Override
 	public void draw(Tile tile){
-		Vector2 v = getPlaceOffset();
-
 		LiquidEntity entity = tile.entity();
-		Draw.rect(name(), tile.worldx() + v.x, tile.worldy() + v.y);
+		Draw.rect(name(), tile.drawx(), tile.drawy());
 		
 		if(entity.liquid == null) return;
 		
 		Draw.color(entity.liquid.color);
 		Draw.alpha(entity.liquidAmount / liquidCapacity);
-		Draw.rect("blank", tile.worldx() + v.x, tile.worldy() + v.y, 2, 2);
+		Draw.rect("blank", tile.drawx(), tile.drawy(), 2, 2);
 		Draw.color();
 	}
 	
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/production/LiquidPowerGenerator.java b/core/src/io/anuke/mindustry/world/blocks/types/production/LiquidPowerGenerator.java
index e5e64697b1..4aec48b2f4 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/production/LiquidPowerGenerator.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/production/LiquidPowerGenerator.java
@@ -1,24 +1,22 @@
 package io.anuke.mindustry.world.blocks.types.production;
 
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.io.IOException;
-
-import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.utils.Array;
-
 import io.anuke.mindustry.entities.TileEntity;
 import io.anuke.mindustry.graphics.Fx;
 import io.anuke.mindustry.resource.Liquid;
 import io.anuke.mindustry.world.Tile;
 import io.anuke.mindustry.world.blocks.types.LiquidAcceptor;
-import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.core.Effects;
 import io.anuke.ucore.core.Effects.Effect;
 import io.anuke.ucore.core.Timers;
+import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.util.Mathf;
 import io.anuke.ucore.util.Strings;
 
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
 public class LiquidPowerGenerator extends Generator implements LiquidAcceptor{
 	public int generateTime = 15;
 	public Liquid generateLiquid;
@@ -57,8 +55,7 @@ public class LiquidPowerGenerator extends Generator implements LiquidAcceptor{
 	}
 	
 	public void drawLiquidCenter(Tile tile){
-		Vector2 offset = getPlaceOffset();
-		Draw.rect("blank", tile.worldx() + offset.x, tile.worldy() + offset.y, 2, 2);
+		Draw.rect("blank", tile.drawx(), tile.drawy(), 2, 2);
 	}
 	
 	@Override
@@ -73,8 +70,8 @@ public class LiquidPowerGenerator extends Generator implements LiquidAcceptor{
 			entity.power += used * powerPerLiquid;
 			
 			if(used > 0.001f && Mathf.chance(0.05 * Timers.delta())){
-				Vector2 offset = getPlaceOffset();
-				Effects.effect(generateEffect, tile.worldx() + offset.x + Mathf.range(3f), tile.worldy() + offset.y + Mathf.range(3f));
+				
+				Effects.effect(generateEffect, tile.drawx() + Mathf.range(3f), tile.drawy() + Mathf.range(3f));
 			}
 		}
 		
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/production/NuclearReactor.java b/core/src/io/anuke/mindustry/world/blocks/types/production/NuclearReactor.java
index 222f3fa646..2ad3dfcd7b 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/production/NuclearReactor.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/production/NuclearReactor.java
@@ -1,7 +1,6 @@
 package io.anuke.mindustry.world.blocks.types.production;
 
 import com.badlogic.gdx.graphics.Color;
-import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.utils.Array;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.TileEntity;
@@ -10,9 +9,9 @@ import io.anuke.mindustry.graphics.Fx;
 import io.anuke.mindustry.resource.Item;
 import io.anuke.mindustry.resource.Liquid;
 import io.anuke.mindustry.world.Tile;
-import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.core.Effects;
 import io.anuke.ucore.core.Timers;
+import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.util.Mathf;
 import io.anuke.ucore.util.Strings;
 import io.anuke.ucore.util.Tmp;
@@ -99,8 +98,7 @@ public class NuclearReactor extends LiquidPowerGenerator{
 	
 	@Override
 	public void drawLiquidCenter(Tile tile){
-		Vector2 offset = getPlaceOffset();
-		Draw.rect(name + "-center", tile.worldx() + offset.x, tile.worldy() + offset.y);
+		Draw.rect(name + "-center", tile.drawx(), tile.drawy());
 	}
 	
 	@Override
@@ -154,18 +152,17 @@ public class NuclearReactor extends LiquidPowerGenerator{
 		super.drawSelect(tile);
 
 		NuclearReactorEntity entity = tile.entity();
-		Vector2 offset = getPlaceOffset();
 
-		Vars.renderer.drawBar(Color.GREEN, tile.worldx() + offset.x, tile.worldy() + 6 +
-				offset.y + height*Vars.tilesize/2f, (float)entity.getItem(generateItem) / itemCapacity);
+		Vars.renderer.drawBar(Color.GREEN, tile.drawx(), tile.drawy() + 6 +
+				height*Vars.tilesize/2f, (float)entity.getItem(generateItem) / itemCapacity);
 		Draw.reset();
 		
 		float fract = entity.heat;
 		if(fract > 0)
 			fract = Mathf.clamp(fract + 0.2f, 0.24f, 1f);
 		
-		Vars.renderer.drawBar(Color.ORANGE, tile.worldx() + offset.x, 
-				tile.worldy() + Vars.tilesize * height/2f + 10 + offset.y, fract);
+		Vars.renderer.drawBar(Color.ORANGE, tile.drawx(),
+				tile.drawy() + Vars.tilesize * height/2f + 10, fract);
 	}
 
 	@Override
@@ -178,17 +175,16 @@ public class NuclearReactor extends LiquidPowerGenerator{
 		super.draw(tile);
 		
 		NuclearReactorEntity entity = tile.entity();
-		Vector2 offset = getPlaceOffset();
 		
 		Draw.color(coolColor, hotColor, entity.heat);
-		Draw.rect("white", tile.worldx() + offset.x, tile.worldy() + offset.y, width * Vars.tilesize, height * Vars.tilesize);
+		Draw.rect("white", tile.drawx(), tile.drawy(), width * Vars.tilesize, height * Vars.tilesize);
 		
 		if(entity.heat > flashThreshold){
 			float flash = 1f + ((entity.heat - flashThreshold) / (1f - flashThreshold)) * 5.4f;
 			entity.flash += flash * Timers.delta();
 			Draw.color(Color.RED, Color.YELLOW, Mathf.absin(entity.flash, 9f, 1f));
 			Draw.alpha(0.6f);
-			Draw.rect(name + "-lights", tile.worldx() + offset.x, tile.worldy() + offset.y);
+			Draw.rect(name + "-lights", tile.drawx(), tile.drawy());
 		}
 		
 		Draw.reset();
diff --git a/html/src/io/anuke/mindustry/client/WebsocketClient.java b/html/src/io/anuke/mindustry/client/WebsocketClient.java
index 9c865ead8b..9e4e2013df 100644
--- a/html/src/io/anuke/mindustry/client/WebsocketClient.java
+++ b/html/src/io/anuke/mindustry/client/WebsocketClient.java
@@ -28,16 +28,14 @@ public class WebsocketClient implements ClientProvider {
     ByteBuffer buffer = ByteBuffer.allocate(1024);
 
     @Override
-    public void connect(String ip, int port) throws IOException {
+    public void connect(String ip, int port){
         socket = new Websocket("ws://" + ip + ":" + Vars.webPort);
         socket.addListener(new WebsocketListener() {
             public void onMessage(byte[] bytes) {
                 try {
                     ByteBuffer buffer = ByteBuffer.wrap(bytes);
                     byte id = buffer.get();
-                    if(id == -2){
-                    //this is a framework message... do nothing yet?
-                    }else {
+                    if(id != -2){ //ignore framework messages
                         Class<?> type = Registrator.getByID(id);
                         Packet packet = (Packet) ClassReflection.newInstance(type);
                         packet.read(buffer);
@@ -99,8 +97,8 @@ public class WebsocketClient implements ClientProvider {
     }
 
     @Override
-    public Array<Host> discover() {
-        return new Array<>();
+    public void discover(Consumer<Array<Host>> callback){
+        callback.accept(new Array<>());
     }
 
     @Override
@@ -141,9 +139,6 @@ public class WebsocketClient implements ClientProvider {
         }
     }
 
-    @Override
-    public void register(Class<?>... types) { }
-
     @Override
     public void dispose() {
         socket.close();
diff --git a/kryonet/src/io/anuke/kryonet/JavaWebsocketClient.java b/kryonet/src/io/anuke/kryonet/JavaWebsocketClient.java
index b053cdf144..eb4693c1b4 100644
--- a/kryonet/src/io/anuke/kryonet/JavaWebsocketClient.java
+++ b/kryonet/src/io/anuke/kryonet/JavaWebsocketClient.java
@@ -125,8 +125,8 @@ public class JavaWebsocketClient implements ClientProvider {
     }
 
     @Override
-    public Array<Host> discover() {
-        return new Array<>();
+    public void discover(Consumer<Array<Host>> callback){
+        callback.accept(new Array<>());
     }
 
     @Override
@@ -134,9 +134,6 @@ public class JavaWebsocketClient implements ClientProvider {
         failed.accept(new IOException());
     }
 
-    @Override
-    public void register(Class<?>... types) { }
-
     @Override
     public void dispose() {
         if(socket != null) socket.close();
diff --git a/kryonet/src/io/anuke/kryonet/KryoClient.java b/kryonet/src/io/anuke/kryonet/KryoClient.java
index ad5a5a0a35..cfc77ecc8c 100644
--- a/kryonet/src/io/anuke/kryonet/KryoClient.java
+++ b/kryonet/src/io/anuke/kryonet/KryoClient.java
@@ -13,7 +13,6 @@ import io.anuke.mindustry.net.Net.ClientProvider;
 import io.anuke.mindustry.net.Net.SendMode;
 import io.anuke.mindustry.net.Packets.Connect;
 import io.anuke.mindustry.net.Packets.Disconnect;
-import io.anuke.mindustry.net.Registrator;
 import io.anuke.ucore.UCore;
 import io.anuke.ucore.function.Consumer;
 
@@ -95,8 +94,6 @@ public class KryoClient implements ClientProvider{
         }else{
             client.addListener(listener);
         }
-
-        register(Registrator.getClasses());
     }
 
     @Override
@@ -143,7 +140,7 @@ public class KryoClient implements ClientProvider{
 
     @Override
     public void pingHost(String address, int port, Consumer<Host> valid, Consumer<IOException> invalid){
-        Thread thread = new Thread(() -> {
+        runAsync(() -> {
             try {
                 DatagramSocket socket = new DatagramSocket();
                 socket.send(new DatagramPacket(new byte[]{-2, 1}, 2, InetAddress.getByName(address), Vars.port));
@@ -168,33 +165,29 @@ public class KryoClient implements ClientProvider{
                 Gdx.app.postRunnable(() -> invalid.accept(e));
             }
         });
-
-        thread.setDaemon(true);
-        thread.start();
     }
 
     @Override
-    public Array<Host> discover(){
-        addresses.clear();
-        List<InetAddress> list = client.discoverHosts(Vars.port, 3000);
-        ObjectSet<String> hostnames = new ObjectSet<>();
-        Array<Host> result = new Array<>();
+    public void discover(Consumer<Array<Host>> callback){
+        runAsync(() -> {
+            addresses.clear();
+            List<InetAddress> list = client.discoverHosts(Vars.port, 3000);
+            ObjectSet<String> hostnames = new ObjectSet<>();
+            Array<Host> result = new Array<>();
 
-        for(InetAddress a : list){
-            if(!hostnames.contains(a.getHostName())) {
-                Host address = addresses.get(a);
-                if(address != null) result.add(address);
+            for(InetAddress a : list){
+                if(!hostnames.contains(a.getHostName())) {
+                    Host address = addresses.get(a);
+                    if(address != null) result.add(address);
 
+                }
+                hostnames.add(a.getHostName());
             }
-            hostnames.add(a.getHostName());
-        }
 
-        return result;
+            Gdx.app.postRunnable(() -> callback.accept(result));
+        });
     }
 
-    @Override
-    public void register(Class<?>... types) { }
-
     @Override
     public void dispose(){
         try {
@@ -204,6 +197,12 @@ public class KryoClient implements ClientProvider{
         }
     }
 
+    private void runAsync(Runnable run){
+        Thread thread = new Thread(run, "Client Async Run");
+        thread.setDaemon(true);
+        thread.start();
+    }
+
     private void handleException(Exception e){
         e.printStackTrace();
         if(e instanceof KryoNetException){
diff --git a/kryonet/src/io/anuke/kryonet/KryoServer.java b/kryonet/src/io/anuke/kryonet/KryoServer.java
index 8b74b8c645..ff705d8763 100644
--- a/kryonet/src/io/anuke/kryonet/KryoServer.java
+++ b/kryonet/src/io/anuke/kryonet/KryoServer.java
@@ -103,8 +103,6 @@ public class KryoServer implements ServerProvider {
         }else{
             server.addListener(listener);
         }
-
-        register(Registrator.getClasses());
     }
 
     @Override
@@ -253,9 +251,6 @@ public class KryoServer implements ServerProvider {
         return k.connection == null ? 0 : k.connection.getReturnTripTime();
     }
 
-    @Override
-    public void register(Class<?>... types) { }
-
     @Override
     public void dispose(){
         try {
@@ -386,7 +381,6 @@ public class KryoServer implements ServerProvider {
 
         public SocketServer(int port) {
             super(new InetSocketAddress(port));
-            //setWebSocketFactory(factory);
         }
 
         @Override