Entity placement/removal

core/src/io/anuke/mindustry/entities/Entities.java

@@ -7,10 +7,11 @@ import io.anuke.arc.function.Consumer;
 import io.anuke.arc.function.Predicate;
 import io.anuke.arc.graphics.Camera;
 import io.anuke.arc.math.geom.Rectangle;
-import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.traits.DrawTrait;
 import io.anuke.mindustry.entities.traits.Entity;
 
+import static io.anuke.mindustry.Vars.collisions;
+
 public class Entities{
     public static final int maxLeafObjects = 4;
     private static final Array<EntityGroup<?>> groupArray = new Array<>();
@@ -48,7 +49,7 @@ public class Entities{
         group.updateEvents();
 
         if(group.useTree()){
-            Vars.collisions.updatePhysics(group);
+            collisions.updatePhysics(group);
         }
 
         for(Entity e : group.all()){