Fix StartupQuery to run properly on dedicated server.. Closes #5649

Signed-off-by: cpw <cpw+github@weeksfamily.ca>

src/main/java/net/minecraftforge/common/DimensionManager.java

@@ -53,6 +53,7 @@ import net.minecraft.world.WorldServerMulti;
 import net.minecraft.world.dimension.DimensionType;
 import net.minecraftforge.event.world.RegisterDimensionsEvent;
 import net.minecraftforge.event.world.WorldEvent;
+import net.minecraftforge.fml.StartupQuery;
 import net.minecraftforge.registries.ClearableRegistry;
 import net.minecraftforge.registries.ForgeRegistries;
 
@@ -151,6 +152,11 @@ public class DimensionManager
         Validate.notNull(server, "Must provide server when creating world");
         Validate.notNull(dim, "Dimension type must not be null");
 
+        // If we're in the early stages of loading, we need to return null so CommandSource can work properly for command function
+        if (StartupQuery.pendingQuery()) {
+            return null;
+        }
+
         if (resetUnloadDelay && unloadQueue.contains(dim.getId()))
             getData(dim).ticksWaited = 0;
 

src/main/java/net/minecraftforge/fml/FMLWorldPersistenceHook.java

@@ -90,6 +90,9 @@ public final class FMLWorldPersistenceHook implements WorldPersistenceHooks.Worl
             {
                 NBTTagCompound mod = modList.getCompound(i);
                 String modId = mod.getString("ModId");
+                if (Objects.equals("minecraft",  modId)) {
+                    continue;
+                }
                 String modVersion = mod.getString("ModVersion");
                 Optional<? extends ModContainer> container = ModList.get().getModContainerById(modId);
                 if (!container.isPresent())

src/main/java/net/minecraftforge/fml/SidedProvider.java

@@ -48,8 +48,8 @@ public enum SidedProvider
             ()-> str->str),
     @SuppressWarnings("Convert2MethodRef") // need to not be methodrefs to avoid classloading all of StartupQuery's data (supplier is coming from StartupQuery)
     STARTUPQUERY(
-            c->StartupQuery.QueryWrapper.clientQuery(c),
-            s->StartupQuery.QueryWrapper.dedicatedServerQuery(s),
+            c->StartupQuery.QueryWrapperClient.clientQuery(c),
+            s->StartupQuery.QueryWrapperServer.dedicatedServerQuery(s),
             ()-> { throw new UnsupportedOperationException(); });
 
     private static Supplier<Minecraft> client;

src/main/java/net/minecraftforge/fml/StartupQuery.java

@@ -70,7 +70,9 @@ public class StartupQuery {
         throw new AbortedException(); // to halt the server
     }
 
-
+    public static boolean pendingQuery() {
+        return pending != null;
+    }
     public static void reset()
     {
         pending = null;
@@ -89,6 +91,7 @@ public class StartupQuery {
                 }
                 catch (RuntimeException e)
                 {
+                    LOGGER.error(SQ,"An exception occurred during startup query handling", e);
                 }
                 pending.throwException();
             }
@@ -212,44 +215,35 @@ public class StartupQuery {
     }
 
 
-    public static class QueryWrapper
-    {
-        public static Consumer<StartupQuery> clientQuery(Supplier<Minecraft> clientSupplier)
-        {
+    public static class QueryWrapperClient {
+        public static Consumer<StartupQuery> clientQuery(Supplier<Minecraft> clientSupplier) {
             return (query) -> {
                 Minecraft client = clientSupplier.get();
-                if (query.getResult() == null)
-                {
+                if (query.getResult() == null) {
                     client.displayGuiScreen(new GuiNotification(query));
-                }
-                else
-                {
+                } else {
                     client.displayGuiScreen(new GuiConfirmation(query));
                 }
 
-                if (query.isSynchronous())
-                {
-                    while (client.currentScreen instanceof GuiNotification)
-                    {
-                        if (Thread.interrupted())
-                        {
+                if (query.isSynchronous()) {
+                    while (client.currentScreen instanceof GuiNotification) {
+                        if (Thread.interrupted()) {
                             query.exception = new InterruptedException();
                             throw new RuntimeException();
                         }
 
-                        try
-                        {
+                        try {
                             Thread.sleep(50);
-                        }
-                        catch (InterruptedException ie)
-                        {
+                        } catch (InterruptedException ie) {
                             query.exception = ie;
                         }
                     }
                 }
             };
         }
+    }
 
+    public static class QueryWrapperServer {
         public static Consumer<StartupQuery> dedicatedServerQuery(Supplier<DedicatedServer> serverSupplier)
         {
             return (query) -> {

src/main/java/net/minecraftforge/server/console/TerminalHandler.java

@@ -20,6 +20,7 @@
 package net.minecraftforge.server.console;
 
 import net.minecraft.server.dedicated.DedicatedServer;
+import net.minecraftforge.fml.StartupQuery;
 import net.minecrell.terminalconsole.TerminalConsoleAppender;
 import org.jline.reader.EndOfFileException;
 import org.jline.reader.LineReader;