SPIGOT-5901: Improve multiworld support

nms-patches/EntityPlayer.patch

@@ -49,7 +49,7 @@
      public EntityPlayer(MinecraftServer minecraftserver, WorldServer worldserver, GameProfile gameprofile, PlayerInteractManager playerinteractmanager) {
          super(worldserver, worldserver.getSpawn(), gameprofile);
          this.spawnDimension = World.OVERWORLD;
-@@ -66,7 +101,51 @@
+@@ -66,12 +101,56 @@
          this.advancementDataPlayer = minecraftserver.getPlayerList().f(this);
          this.G = 1.0F;
          this.b(worldserver);
@@ -101,6 +101,12 @@
  
      private void b(WorldServer worldserver) {
          BlockPosition blockposition = worldserver.getSpawn();
+ 
+-        if (worldserver.getDimensionManager().hasSkyLight() && worldserver.getMinecraftServer().getSaveData().getGameType() != EnumGamemode.ADVENTURE) {
++        if (worldserver.getDimensionManager().hasSkyLight() && worldserver.worldDataServer.getGameType() != EnumGamemode.ADVENTURE) { // CraftBukkit
+             int i = Math.max(0, this.server.a(worldserver));
+             int j = MathHelper.floor(worldserver.getWorldBorder().b((double) blockposition.getX(), (double) blockposition.getZ()));
+ 
 @@ -137,11 +216,20 @@
          if (nbttagcompound.hasKeyOfType("recipeBook", 10)) {
              this.recipeBook.a(nbttagcompound.getCompound("recipeBook"), this.server.getCraftingManager());

nms-patches/PlayerList.patch

@@ -655,7 +655,12 @@
      }
  
      public int getPlayerCount() {
-@@ -747,27 +1035,50 @@
+@@ -743,31 +1031,54 @@
+             entityplayer.playerInteractManager.a(this.u, EnumGamemode.NOT_SET);
+         }
+ 
+-        entityplayer.playerInteractManager.b(worldserver.getMinecraftServer().getSaveData().getGameType());
++        entityplayer.playerInteractManager.b(worldserver.worldDataServer.getGameType()); // CraftBukkit
      }
  
      public void shutdown() {

nms-patches/WorldServer.patch

@@ -73,7 +73,15 @@
          this.portalTravelAgent = new PortalTravelAgent(this);
          this.N();
          this.O();
-@@ -97,8 +131,42 @@
+@@ -91,14 +125,48 @@
+             iworlddataserver.setGameType(minecraftserver.getGamemode());
+         }
+ 
+-        this.structureManager = new StructureManager(this, minecraftserver.getSaveData().getGeneratorSettings());
++        this.structureManager = new StructureManager(this, this.worldDataServer.getGeneratorSettings()); // CraftBukkit
+         if (this.getDimensionManager().isCreateDragonBattle()) {
+-            this.dragonBattle = new EnderDragonBattle(this, minecraftserver.getSaveData().getGeneratorSettings().getSeed(), minecraftserver.getSaveData().B());
++            this.dragonBattle = new EnderDragonBattle(this, this.worldDataServer.getGeneratorSettings().getSeed(), this.worldDataServer.B()); // CraftBukkit
          } else {
              this.dragonBattle = null;
          }
@@ -301,7 +309,7 @@
              if (iprogressupdate != null) {
                  iprogressupdate.a(new ChatMessage("menu.savingLevel"));
              }
-@@ -626,6 +740,14 @@
+@@ -626,11 +740,19 @@
  
              chunkproviderserver.save(flag);
          }
@@ -316,6 +324,12 @@
      }
  
      private void ag() {
+         if (this.dragonBattle != null) {
+-            this.server.getSaveData().a(this.dragonBattle.a());
++            this.worldDataServer.a(this.dragonBattle.a()); // CraftBukkit
+         }
+ 
+         this.getChunkProvider().getWorldPersistentData().a();
 @@ -691,11 +813,24 @@
  
      @Override