Fixed black blocks/units after quit / Fixed intense wave spawn lag

core/src/io/anuke/mindustry/game/DefaultWaves.java

@@ -5,9 +5,9 @@ import io.anuke.mindustry.content.*;
 import io.anuke.mindustry.type.ItemStack;
 
 public class DefaultWaves{
-    private static Array<SpawnGroup> spawns;
+    private Array<SpawnGroup> spawns;
 
-    public static Array<SpawnGroup> get(){
+    public Array<SpawnGroup> get(){
         if(spawns == null && UnitTypes.dagger != null){
             spawns = Array.with(
             new SpawnGroup(UnitTypes.dagger){{

core/src/io/anuke/mindustry/game/Rules.java

@@ -51,8 +51,8 @@ public class Rules{
     public float launchWaveMultiplier = 2f;
     /** Zone for saves that have them.*/
     public Zone zone;
-    /** Spawn layout. Should be assigned on save load based on map or zone. */
-    public Array<SpawnGroup> spawns = DefaultWaves.get();
+    /** Spawn layout. */
+    public Array<SpawnGroup> spawns = new Array<>();
     /** Determines if there should be limited respawns. */
     public boolean limitedRespawns = false;
     /** How many times player can respawn during one wave. */