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fix: use HashedStack for container_click and fix enchantments parsing for 1.21.5+

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Two bugs fixed:

1. EnchantmentsComponent was reading a trailing ShowTooltip boolean that
   was removed from the wire format in MC 1.21.5. Created
   EnchantmentsComponent1215 and StoredEnchantmentsComponent1215 that
   omit the boolean. Used by StructuredComponentsRegistry1215 and 12111.

2. MC 1.21.5+ changed ServerboundContainerClickPacket to use HashedStack
   (item holder id + count + hashed component patch map) instead of full
   ItemStack for changed slots and carried item. Added GetHashedItemSlot()
   in DataTypes.cs and gated SendWindowAction in Protocol18.cs to use it
   for 1.21.5+. Since MCC doesn't track component hashes, an empty
   HashedPatchMap is sent; the server detects stateId mismatch and resyncs.

Tested: AutoFishing bot successfully catches fish on MC 1.21.11 with
enchanted fishing rods (Lure III + Luck of the Sea III).

Made-with: Cursor
This commit is contained in:
BruceChen 2026-03-22 02:18:01 +08:00
parent 6c36dc341a
commit c0c4c078c0
6 changed files with 87 additions and 6 deletions
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39
MinecraftClient/Protocol/Handlers/StructuredComponents/Components/1_21_5/EnchantmentsComponent1215.cs Normal file
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@ -0,0 +1,39 @@
using System.Collections.Generic;
using MinecraftClient.Inventory;
using MinecraftClient.Inventory.ItemPalettes;
using MinecraftClient.Protocol.Handlers.StructuredComponents.Components._1_20_6;
using MinecraftClient.Protocol.Handlers.StructuredComponents.Core;
namespace MinecraftClient.Protocol.Handlers.StructuredComponents.Components._1_21_5;
/// <summary>
/// 1.21.5+ enchantments: showInTooltip removed from wire format (moved to tooltip_display component).
/// Wire: VarInt count, then (VarInt holder_id + VarInt level) per entry. No trailing boolean.
/// </summary>
public class EnchantmentsComponent1215(DataTypes dataTypes, ItemPalette itemPalette, SubComponentRegistry subComponentRegistry)
: EnchantmentsComponent(dataTypes, itemPalette, subComponentRegistry)
{
public override void Parse(Queue<byte> data)
{
NumberOfEnchantments = dataTypes.ReadNextVarInt(data);
for (var i = 0; i < NumberOfEnchantments; i++)
{
var registryId = dataTypes.ReadNextVarInt(data);
var level = dataTypes.ReadNextVarInt(data);
Enchantments.Add(new Enchantment(EnchantmentMapping.GetEnchantmentByRegistryId1206(registryId), level));
}
}
public override Queue<byte> Serialize()
{
var data = new List<byte>();
data.AddRange(DataTypes.GetVarInt(Enchantments.Count));
foreach (var enchantment in Enchantments)
{
data.AddRange(DataTypes.GetVarInt(EnchantmentMapping.GetRegistryId1206ByEnchantment(enchantment.Type)));
data.AddRange(DataTypes.GetVarInt(enchantment.Level));
}
return new Queue<byte>(data);
}
}

7
MinecraftClient/Protocol/Handlers/StructuredComponents/Components/1_21_5/StoredEnchantmentsComponent1215.cs Normal file
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@ -0,0 +1,7 @@
using MinecraftClient.Inventory.ItemPalettes;
using MinecraftClient.Protocol.Handlers.StructuredComponents.Core;
namespace MinecraftClient.Protocol.Handlers.StructuredComponents.Components._1_21_5;
public class StoredEnchantmentsComponent1215(DataTypes dataTypes, ItemPalette itemPalette, SubComponentRegistry subComponentRegistry)
: EnchantmentsComponent1215(dataTypes, itemPalette, subComponentRegistry);

4
MinecraftClient/Protocol/Handlers/StructuredComponents/Registries/StructuredComponentsRegistry12111.cs
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@ -27,7 +27,7 @@ public class StructuredComponentsRegistry12111 : StructuredComponentRegistry
RegisterComponent<ItemModelComponent>(10, "minecraft:item_model");
RegisterComponent<LoreNameComponent1206>(11, "minecraft:lore");
RegisterComponent<RarityComponent>(12, "minecraft:rarity");
RegisterComponent<EnchantmentsComponent>(13, "minecraft:enchantments");
RegisterComponent<EnchantmentsComponent1215>(13, "minecraft:enchantments");
RegisterComponent<CanPlaceOnComponent>(14, "minecraft:can_place_on");
RegisterComponent<CanBreakComponent>(15, "minecraft:can_break");
RegisterComponent<AttributeModifiersComponent>(16, "minecraft:attribute_modifiers");
@ -55,7 +55,7 @@ public class StructuredComponentsRegistry12111 : StructuredComponentRegistry
RegisterComponent<PiercingWeaponComponent>(38, "minecraft:piercing_weapon");
RegisterComponent<KineticWeaponComponent>(39, "minecraft:kinetic_weapon");
RegisterComponent<SwingAnimationComponent>(40, "minecraft:swing_animation");
RegisterComponent<StoredEnchantmentsComponent>(41, "minecraft:stored_enchantments");
RegisterComponent<StoredEnchantmentsComponent1215>(41, "minecraft:stored_enchantments");
RegisterComponent<DyeColorComponent>(42, "minecraft:dyed_color");
RegisterComponent<MapColorComponent>(43, "minecraft:map_color");
RegisterComponent<MapIdComponent>(44, "minecraft:map_id");

4
MinecraftClient/Protocol/Handlers/StructuredComponents/Registries/StructuredComponentsRegistry1215.cs
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@ -23,7 +23,7 @@ public class StructuredComponentsRegistry1215 : StructuredComponentRegistry
RegisterComponent<ItemModelComponent>(7, "minecraft:item_model");
RegisterComponent<LoreNameComponent1206>(8, "minecraft:lore");
RegisterComponent<RarityComponent>(9, "minecraft:rarity");
RegisterComponent<EnchantmentsComponent>(10, "minecraft:enchantments");
RegisterComponent<EnchantmentsComponent1215>(10, "minecraft:enchantments");
RegisterComponent<CanPlaceOnComponent>(11, "minecraft:can_place_on");
RegisterComponent<CanBreakComponent>(12, "minecraft:can_break");
RegisterComponent<AttributeModifiersComponent>(13, "minecraft:attribute_modifiers");
@ -48,7 +48,7 @@ public class StructuredComponentsRegistry1215 : StructuredComponentRegistry
RegisterComponent<TooltipStyleComponent>(31, "minecraft:tooltip_style");
RegisterComponent<DeathProtectionComponent>(32, "minecraft:death_protection");
RegisterComponent<BlocksAttacksComponent>(33, "minecraft:blocks_attacks"); // NEW
RegisterComponent<StoredEnchantmentsComponent>(34, "minecraft:stored_enchantments");
RegisterComponent<StoredEnchantmentsComponent1215>(34, "minecraft:stored_enchantments");
RegisterComponent<DyeColorComponent>(35, "minecraft:dyed_color");
RegisterComponent<MapColorComponent>(36, "minecraft:map_color");
RegisterComponent<MapIdComponent>(37, "minecraft:map_id");