feat: add MC 1.21.7/1.21.8 (protocol 772) support

1.21.7 and 1.21.8 share protocol 772. The only registry change from
1.21.6 is one new item (music_disc_lava_chicken). All other palettes
(blocks, entities, packets, entity metadata, structured components)
are unchanged and reuse 1.21.6 versions.

Changes:
- Add MC_1_21_7_Version (772) constant
- Add "1.21.7" / "1.21.8" version mappings in ProtocolHandler
- Add MusicDiscLavaChicken to ItemType enum
- Generate ItemPalette1217 (1416 items) for the new item palette
- Update all version upper-bound checks from MC_1_21_6 to MC_1_21_7
- Update MCHighestVersion to "1.21.8"

Made-with: Cursor

MinecraftClient/Inventory/ItemType.cs

@@ -813,6 +813,7 @@ namespace MinecraftClient.Inventory
         MusicDiscCreator,
         MusicDiscCreatorMusicBox,
         MusicDiscFar,
+        MusicDiscLavaChicken,
         MusicDiscMall,
         MusicDiscMellohi,
         MusicDiscOtherside,

MinecraftClient/Mapping/EntityMetadataPalette.cs

@@ -24,7 +24,7 @@ public abstract class EntityMetadataPalette
             <= Protocol18Handler.MC_1_19_3_Version => new EntityMetadataPalette1193(),  // 1.19.3
             < Protocol18Handler.MC_1_20_6_Version => new EntityMetadataPalette1194(),  // 1.19.4 - 1.20.4
             <= Protocol18Handler.MC_1_21_4_Version => new EntityMetadataPalette1206(),  // 1.20.6 - 1.21.4
-            <= Protocol18Handler.MC_1_21_6_Version => new EntityMetadataPalette1215(),  // 1.21.5 - 1.21.6
+            <= Protocol18Handler.MC_1_21_7_Version => new EntityMetadataPalette1215(),  // 1.21.5 - 1.21.7
             _ => throw new NotImplementedException()
         };
     }

MinecraftClient/Program.cs

@@ -46,7 +46,7 @@ namespace MinecraftClient
 
         public const string Version = MCHighestVersion;
         public const string MCLowestVersion = "1.4.6";
-        public const string MCHighestVersion = "1.21.2";
+        public const string MCHighestVersion = "1.21.8";
         public static readonly string? BuildInfo = null;
 
         private static Tuple<Thread, CancellationTokenSource>? offlinePrompt = null;

MinecraftClient/Protocol/Handlers/PacketType18Handler.cs

@@ -48,9 +48,9 @@ namespace MinecraftClient.Protocol.Handlers
         {
             PacketTypePalette p = protocol switch
             {
-                > Protocol18Handler.MC_1_21_6_Version => throw new NotImplementedException(Translations
+                > Protocol18Handler.MC_1_21_7_Version => throw new NotImplementedException(Translations
                     .exception_palette_packet),
-                <= Protocol18Handler.MC_1_21_6_Version and > Protocol18Handler.MC_1_21_5_Version => new PacketPalette1216(),
+                <= Protocol18Handler.MC_1_21_7_Version and > Protocol18Handler.MC_1_21_5_Version => new PacketPalette1216(),
                 <= Protocol18Handler.MC_1_21_5_Version and > Protocol18Handler.MC_1_21_4_Version => new PacketPalette1215(),
                 <= Protocol18Handler.MC_1_21_4_Version and > Protocol18Handler.MC_1_21_2_Version => new PacketPalette1214(),
                 <= Protocol18Handler.MC_1_8_Version => new PacketPalette17(),

MinecraftClient/Protocol/Handlers/Protocol18.cs

@@ -77,6 +77,7 @@ namespace MinecraftClient.Protocol.Handlers
         internal const int MC_1_21_4_Version = 769;
         internal const int MC_1_21_5_Version = 770;
         internal const int MC_1_21_6_Version = 771;
+        internal const int MC_1_21_7_Version = 772;
 
         private int compression_treshold = -1;
         private int autocomplete_transaction_id = 0;
@@ -128,21 +129,21 @@ namespace MinecraftClient.Protocol.Handlers
             lastSeenMessagesCollector = protocolVersion >= MC_1_19_3_Version ? new(20) : new(5);
             chunkBatchStartTime = GetNanos();
 
-            if (handler.GetTerrainEnabled() && protocolVersion > MC_1_21_6_Version)
+            if (handler.GetTerrainEnabled() && protocolVersion > MC_1_21_7_Version)
             {
                 log.Error($"§c{Translations.extra_terrainandmovement_disabled}");
                 handler.SetTerrainEnabled(false);
             }
 
             if (handler.GetInventoryEnabled() &&
-                protocolVersion is < MC_1_8_Version or > MC_1_21_6_Version)
+                protocolVersion is < MC_1_8_Version or > MC_1_21_7_Version)
             {
                 log.Error($"§c{Translations.extra_inventory_disabled}");
                 handler.SetInventoryEnabled(false);
             }
 
             if (handler.GetEntityHandlingEnabled() &&
-                protocolVersion is < MC_1_8_Version or > MC_1_21_6_Version)
+                protocolVersion is < MC_1_8_Version or > MC_1_21_7_Version)
             {
                 log.Error($"§c{Translations.extra_entity_disabled}");
                 handler.SetEntityHandlingEnabled(false);
@@ -151,9 +152,9 @@ namespace MinecraftClient.Protocol.Handlers
             Block.Palette = protocolVersion switch
             {
                 // Block palette
-                > MC_1_21_6_Version when handler.GetTerrainEnabled() =>
+                > MC_1_21_7_Version when handler.GetTerrainEnabled() =>
                     throw new NotImplementedException(Translations.exception_palette_block),
-                >= MC_1_21_6_Version => new Palette1216(),
+                >= MC_1_21_6_Version => new Palette1216(),  // 1.21.7 blocks unchanged, reuse 1216
                 >= MC_1_21_5_Version => new Palette1215(),
                 >= MC_1_21_4_Version => new Palette1214(),
                 >= MC_1_21_2_Version => new Palette1212(),
@@ -174,9 +175,9 @@ namespace MinecraftClient.Protocol.Handlers
             entityPalette = protocolVersion switch
             {
                 // Entity palette
-                > MC_1_21_6_Version when handler.GetEntityHandlingEnabled() =>
+                > MC_1_21_7_Version when handler.GetEntityHandlingEnabled() =>
                     throw new NotImplementedException(Translations.exception_palette_entity),
-                >= MC_1_21_6_Version => new EntityPalette1216(),
+                >= MC_1_21_6_Version => new EntityPalette1216(),  // 1.21.7 entities unchanged, reuse 1216
                 >= MC_1_21_5_Version => new EntityPalette1215(),
                 >= MC_1_21_4_Version => new EntityPalette1214(),
                 >= MC_1_21_2_Version => new EntityPalette1212(),
@@ -201,8 +202,9 @@ namespace MinecraftClient.Protocol.Handlers
             itemPalette = protocolVersion switch
             {
                 // Item palette
-                > MC_1_21_6_Version when handler.GetInventoryEnabled() =>
+                > MC_1_21_7_Version when handler.GetInventoryEnabled() =>
                     throw new NotImplementedException(Translations.exception_palette_item),
+                >= MC_1_21_7_Version => new ItemPalette1217(),
                 >= MC_1_21_6_Version => new ItemPalette1216(),
                 >= MC_1_21_5_Version => new ItemPalette1215(),
                 >= MC_1_21_4_Version => new ItemPalette1214(),
@@ -2659,7 +2661,7 @@ namespace MinecraftClient.Protocol.Handlers
                         // Also make a palette for field? Will be a lot of work
                         var healthField = protocolVersion switch
                         {
-                            > MC_1_21_6_Version => throw new NotImplementedException(Translations
+                            > MC_1_21_7_Version => throw new NotImplementedException(Translations
                                 .exception_palette_healthfield),
                             // 1.17 and above
                             >= MC_1_17_Version => 9,

MinecraftClient/Protocol/ProtocolHandler.cs

@@ -154,7 +154,7 @@ namespace MinecraftClient.Protocol
             {
                 4, 5, 47, 107, 108, 109, 110, 210, 315, 316, 335, 338, 340, 393, 401, 404, 477, 480, 485, 490, 498, 573,
                 575, 578, 735, 736, 751, 753, 754, 755, 756, 757, 758, 759, 760, 761, 762, 763, 764, 765, 766, 767, 768,
-                769, 770, 771
+                769, 770, 771, 772
             };
 
             if (Array.IndexOf(suppoertedVersionsProtocol18, protocolVersion) > -1)
@@ -362,6 +362,9 @@ namespace MinecraftClient.Protocol
                         return 770;
                     case "1.21.6":
                         return 771;
+                    case "1.21.7":
+                    case "1.21.8":
+                        return 772;
                     default:
                         return 0;
                 }
@@ -447,6 +450,7 @@ namespace MinecraftClient.Protocol
                 769 => "1.21.4",
                 770 => "1.21.5",
                 771 => "1.21.6",
+                772 => "1.21.7",
                 _ => "0.0"
             };
         }