add hardcore property to config event (#117)

(cherry picked from commit f5f8e21427)

src/main/java/net/minestom/server/entity/Player.java

@@ -203,6 +203,7 @@ public class Player extends LivingEntity implements CommandSender, Localizable,
     private int permissionLevel;
 
     private boolean reducedDebugScreenInformation;
+    private boolean hardcore;
 
     // Abilities
     private boolean flying;
@@ -262,10 +263,11 @@ public class Player extends LivingEntity implements CommandSender, Localizable,
     }
 
     @ApiStatus.Internal
-    public void setPendingInstance(@NotNull Instance pendingInstance) {
+    public void setPendingOptions(@NotNull Instance pendingInstance, boolean hardcore) {
         // I(mattw) am not a big fan of this function, but somehow we need to store
         // the instance and i didn't like a record in ConnectionManager either.
         this.pendingInstance = pendingInstance;
+        this.hardcore = hardcore;
     }
 
     /**
@@ -284,7 +286,7 @@ public class Player extends LivingEntity implements CommandSender, Localizable,
         this.dimensionType = spawnInstance.getDimensionType();
 
         final JoinGamePacket joinGamePacket = new JoinGamePacket(
-                getEntityId(), false, List.of(), 0,
+                getEntityId(), this.hardcore, List.of(), 0,
                 MinecraftServer.getChunkViewDistance(), MinecraftServer.getChunkViewDistance(),
                 false, true, false, dimensionType.toString(), spawnInstance.getDimensionName(),
                 0, gameMode, null, false, levelFlat, deathLocation, portalCooldown);

src/main/java/net/minestom/server/event/player/AsyncPlayerConfigurationEvent.java

@@ -19,6 +19,7 @@ public class AsyncPlayerConfigurationEvent implements PlayerEvent {
     private final Player player;
     private final boolean isFirstConfig;
 
+    private boolean hardcore;
     private boolean sendRegistryData;
     private Instance spawningInstance;
 
@@ -26,6 +27,7 @@ public class AsyncPlayerConfigurationEvent implements PlayerEvent {
         this.player = player;
         this.isFirstConfig = isFirstConfig;
 
+        this.hardcore = false;
         this.sendRegistryData = isFirstConfig;
         this.spawningInstance = null;
     }
@@ -42,6 +44,14 @@ public class AsyncPlayerConfigurationEvent implements PlayerEvent {
         return isFirstConfig;
     }
 
+    public boolean isHardcore() {
+        return this.hardcore;
+    }
+
+    public void setHardcore(boolean hardcore) {
+        this.hardcore = hardcore;
+    }
+
     public boolean willSendRegistryData() {
         return sendRegistryData;
     }

src/main/java/net/minestom/server/network/ConnectionManager.java

@@ -288,7 +288,7 @@ public final class ConnectionManager {
             if (packFuture != null) packFuture.join();
 
             keepAlivePlayers.remove(player);
-            player.setPendingInstance(spawningInstance);
+            player.setPendingOptions(spawningInstance, event.isHardcore());
             player.sendPacket(new FinishConfigurationPacket());
         });
         if (DebugUtils.INSIDE_TEST) configFuture.join();