Make sure we use the update sign packet when it exists

Should fix #263

modules/API/src/main/java/com/comphenix/protocol/PacketType.java

@@ -189,19 +189,19 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
 			 * @deprecated Removed in 1.9
 			 */
 			@Deprecated
-			public static final PacketType MAP_CHUNK_BULK =              new PacketType(PROTOCOL, SENDER, -1, -1, "MapChunkBulk").deprecated();
+			public static final PacketType MAP_CHUNK_BULK =              new PacketType(PROTOCOL, SENDER, -1, -1, "MapChunkBulk").deprecatedIn(MinecraftVersion.COMBAT_UPDATE);
 
 			/**
 			 * @deprecated Removed in 1.9
 			 */
 			@Deprecated
-			public static final PacketType SET_COMPRESSION =             new PacketType(PROTOCOL, SENDER, -1, -1, "SetCompression").deprecated();
+			public static final PacketType SET_COMPRESSION =             new PacketType(PROTOCOL, SENDER, -1, -1, "SetCompression").deprecatedIn(MinecraftVersion.COMBAT_UPDATE);
 
 			/**
 			 * @deprecated Removed in 1.9
 			 */
 			@Deprecated
-			public static final PacketType UPDATE_ENTITY_NBT =           new PacketType(PROTOCOL, SENDER, -1, -1, "UpdateEntityNBT").deprecated();
+			public static final PacketType UPDATE_ENTITY_NBT =           new PacketType(PROTOCOL, SENDER, -1, -1, "UpdateEntityNBT").deprecatedIn(MinecraftVersion.COMBAT_UPDATE);
 
 			// ----- Renamed packets
 
@@ -235,9 +235,8 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
 			 * @deprecated Replaced by {@link TILE_ENTITY_DATA}
 			 */
 			@Deprecated
-			public static final PacketType UPDATE_SIGN =                  TILE_ENTITY_DATA.deprecated();
+			public static final PacketType UPDATE_SIGN =                   getUpdateSign();
 
-			// The instance must
 			private final static Server INSTANCE = new Server();
 
 			// Prevent accidental construction
@@ -249,6 +248,11 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
 			public static Server getInstance() {
 				return INSTANCE;
 			}
+
+			private static PacketType getUpdateSign() {
+				PacketType type = new PacketType(PROTOCOL, SENDER, -1, -1, "UpdateSign");
+				return type.getPacketClass() != null ? type : UPDATE_ENTITY_NBT.deprecated();
+			}
 		}
 
 		/**
@@ -582,7 +586,7 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
 	/**
 	 * Protocol version of all the current IDs.
 	 */
-	private static final MinecraftVersion PROTOCOL_VERSION = MinecraftVersion.BOUNTIFUL_UPDATE;
+	private static final MinecraftVersion PROTOCOL_VERSION = MinecraftVersion.FROSTBURN_UPDATE;
 
 	private final Protocol protocol;
 	private final Sender sender;
@@ -1075,6 +1079,14 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
 		return forceAsync;
 	}
 
+	private PacketType deprecatedIn(MinecraftVersion version) {
+		try {
+			return MinecraftVersion.getCurrentVersion().isAtLeast(version) ? deprecated() : this;
+		} catch (Throwable ex) {
+			return deprecated();
+		}
+	}
+
 	private PacketType deprecated() {
 		PacketType ret = clone();
 		ret.deprecated = true;

modules/API/src/main/java/com/comphenix/protocol/events/PacketContainer.java

@@ -1338,8 +1338,7 @@ public class PacketContainer implements Serializable {
 	private static class ComponentArrayConverter implements EquivalentConverter<WrappedChatComponent[]> {
 		private static final EquivalentConverter<WrappedChatComponent[]> DELEGATE;
 		static {
-			Class<?> packetClass = PacketType.Play.Server.UPDATE_SIGN.getPacketClass();
+			if (!PacketType.Play.Server.UPDATE_SIGN.isDeprecated()) {
-			if (packetClass.getName().contains("Sign")) {
 				DELEGATE = new LegacyComponentConverter();
 			} else {
 				DELEGATE = new NBTComponentConverter();