More multiplayer fixes

core/src/io/anuke/mindustry/entities/effect/ItemTransfer.java

@@ -41,16 +41,19 @@ public class ItemTransfer extends TimedEntity implements DrawTrait{
 
     @Remote(in = In.entities, called = Loc.server, unreliable = true)
     public static void transferItemEffect(Item item, float x, float y, Unit to){
+        if(to == null) return;
         create(item, x, y, to, () -> {});
     }
 
     @Remote(in = In.entities, called = Loc.server, unreliable = true)
     public static void transferItemToUnit(Item item, float x, float y, Unit to){
+        if(to == null) return;
         create(item, x, y, to, () -> to.inventory.addItem(item, 1));
     }
 
     @Remote(in = In.entities, called = Loc.server)
     public static void transferItemTo(Item item, int amount, float x, float y, Tile tile){
+        if(tile == null) return;
         for (int i = 0; i < Mathf.clamp(amount/3, 1, 8); i++) {
             Timers.run(i*3, () -> create(item, x, y, tile, () -> {}));
         }

core/src/io/anuke/mindustry/entities/traits/SyncTrait.java

@@ -1,6 +1,7 @@
 package io.anuke.mindustry.entities.traits;
 
 import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.utils.TimeUtils;
 import io.anuke.mindustry.net.Interpolator;
 import io.anuke.ucore.entities.trait.Entity;
 
@@ -24,8 +25,8 @@ public interface SyncTrait extends Entity, TypeTrait {
         if(getInterpolator() != null) {
             getInterpolator().target.set(x, y);
             getInterpolator().last.set(x, y);
-            getInterpolator().spacing = 1f;
-            getInterpolator().time = 0f;
+            getInterpolator().updateSpacing = 16;
+            getInterpolator().lastUpdated = TimeUtils.millis();
         }
     }