Code cleanup

core/src/io/anuke/mindustry/entities/bullet/BulletType.java

@@ -12,14 +12,14 @@ import io.anuke.ucore.entities.impl.BaseBulletType;
 import io.anuke.ucore.util.Translator;
 
 public abstract class BulletType extends Content implements BaseBulletType<Bullet>{
-    public float lifetime = 100;
-    public float speed = 1f;
-    public float damage = 1;
+    public float lifetime;
+    public float speed;
+    public float damage;
     public float hitsize = 4;
     public float drawSize = 20f;
     public float drag = 0f;
     public boolean pierce;
-    public Effect hiteffect = null, despawneffect = null;
+    public Effect hiteffect, despawneffect;
 
     /**Knockback in velocity.*/
     public float knockback;

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

@@ -32,7 +32,6 @@ import io.anuke.ucore.util.SeedRandom;
 
 import java.io.DataInput;
 import java.io.DataOutput;
-import java.io.IOException;
 
 import static io.anuke.mindustry.Vars.bulletGroup;
 import static io.anuke.mindustry.Vars.world;
@@ -161,14 +160,10 @@ public class Lightning extends SolidEntity implements Poolable, DrawTrait, SyncT
     }
 
     @Override
-    public void write(DataOutput data) throws IOException{
-
-    }
+    public void write(DataOutput data){}
 
     @Override
-    public void read(DataInput data, long time) throws IOException{
-
-    }
+    public void read(DataInput data, long time){}
 
     @Override
     public float lifetime(){

core/src/io/anuke/mindustry/entities/units/BaseUnit.java

@@ -334,16 +334,6 @@ public abstract class BaseUnit extends Unit implements ShooterTrait{
 
     }
 
-    @Override
-    public void drawUnder(){
-
-    }
-
-    @Override
-    public void drawOver(){
-
-    }
-
     @Override
     public float getMaxVelocity(){
         return type.maxVelocity;

core/src/io/anuke/mindustry/entities/units/types/Drone.java

@@ -39,7 +39,6 @@ import static io.anuke.mindustry.Vars.*;
 
 public class Drone extends FlyingUnit implements BuilderTrait{
     protected static float discoverRange = 120f;
-    protected static boolean initialized;
     protected static int timerRepairEffect = timerIndex++;
 
     protected Item targetItem;
@@ -234,17 +233,7 @@ public class Drone extends FlyingUnit implements BuilderTrait{
         }
     };
 
-    {
-        initEvents();
-    }
-
-    /**
-     * Initialize placement event notifier system.
-     * Static initialization is to be avoided, thus, this is done lazily.
-     */
-    private static void initEvents(){
-        if(initialized) return;
-
+    static{
         Events.on(BlockBuildEvent.class, event -> {
             EntityGroup<BaseUnit> group = unitGroups[event.team.ordinal()];
 
@@ -257,8 +246,6 @@ public class Drone extends FlyingUnit implements BuilderTrait{
                 }
             }
         });
-
-        initialized = true;
     }
 
     private void notifyPlaced(BuildEntity entity){