1.21.60 support

2025-02-13 10:42:17 +07:00
parent 1eea0360a5
commit f424b90afd
28 changed files with 10000 additions and 96 deletions
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@ A gophertunnel protocol interface implementation to support older Minecraft Bedr
 ## Supported Versions
 | Protocol ID | Version | Support |
 |-------------|---------|---------|
+| 776         | 1.21.60 | ✅       |
 | 766         | 1.21.50 | ✅       |
 | 748         | 1.21.40 | ✅       |
 | 729         | 1.21.30 | ✅       |
--- a/example-proxy.go
+++ b/example-proxy.go
@@ -10,6 +10,7 @@ import (
 	"log"
 	"os"
 	"sync"
+	"time"
 )

 // The following program implements a proxy that forwards players from one local address to a remote address.
@@ -28,6 +29,7 @@ func main() {
 	listener, err := minecraft.ListenConfig{
 		StatusProvider: p,
 		AcceptedProtocols: []minecraft.Protocol{
+			legacyver.New766(),
 			legacyver.New748(),
 			legacyver.New729(),
 			legacyver.New712(),
@@ -54,7 +56,7 @@ func handleConn(conn *minecraft.Conn, listener *minecraft.Listener, config confi
 	serverConn, err := minecraft.Dialer{
 		TokenSource: src,
 		ClientData:  conn.ClientData(),
-	}.Dial("raknet", config.Connection.RemoteAddress)
+	}.DialTimeout("raknet", config.Connection.RemoteAddress, time.Second*100)
 	if err != nil {
 		panic(err)
 	}
--- a/go.mod
+++ b/go.mod
@@ -10,11 +10,11 @@ require (
 	github.com/pelletier/go-toml v1.9.5
 	github.com/rogpeppe/go-internal v1.13.1
 	github.com/samber/lo v1.47.0
-	github.com/sandertv/gophertunnel v1.43.1
+	github.com/sandertv/gophertunnel v1.44.1-0.20250211173944-b0dbda19ad6a
 	github.com/segmentio/fasthash v1.0.3
 	golang.org/x/exp v0.0.0-20241217172543-b2144cdd0a67
 	golang.org/x/image v0.21.0
-	golang.org/x/oauth2 v0.24.0
+	golang.org/x/oauth2 v0.26.0
 )

 require (
@@ -27,8 +27,8 @@ require (
 	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/muhammadmuzzammil1998/jsonc v1.0.0 // indirect
 	github.com/sandertv/go-raknet v1.14.2 // indirect
-	golang.org/x/crypto v0.31.0 // indirect
+	golang.org/x/crypto v0.33.0 // indirect
 	golang.org/x/mod v0.22.0 // indirect
-	golang.org/x/net v0.33.0 // indirect
-	golang.org/x/text v0.21.0 // indirect
+	golang.org/x/net v0.35.0 // indirect
+	golang.org/x/text v0.22.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -49,6 +49,10 @@ github.com/sandertv/gophertunnel v1.43.1-0.20241229203958-5af8736ae319 h1:yxDqIv
 github.com/sandertv/gophertunnel v1.43.1-0.20241229203958-5af8736ae319/go.mod h1:XuEJo+ARim+NKiD90Z56sQRcDtCOErz26e2bt3LEd9I=
 github.com/sandertv/gophertunnel v1.43.1 h1:wY6Fy8dRMKtpZUQzCR35o9k05135vOJZhrz0GF6OXFI=
 github.com/sandertv/gophertunnel v1.43.1/go.mod h1:XuEJo+ARim+NKiD90Z56sQRcDtCOErz26e2bt3LEd9I=
+github.com/sandertv/gophertunnel v1.43.2-0.20250207144337-b2857453171d h1:JK3btKqp1QUPWLfgXyTUaKa8wUHJnO0Z3jqdKebbNq0=
+github.com/sandertv/gophertunnel v1.43.2-0.20250207144337-b2857453171d/go.mod h1:XuEJo+ARim+NKiD90Z56sQRcDtCOErz26e2bt3LEd9I=
+github.com/sandertv/gophertunnel v1.44.1-0.20250211173944-b0dbda19ad6a h1:1dFrVCwemoApT79gWY0PMjMTjZooS553YNRvml6IA2Y=
+github.com/sandertv/gophertunnel v1.44.1-0.20250211173944-b0dbda19ad6a/go.mod h1:XuEJo+ARim+NKiD90Z56sQRcDtCOErz26e2bt3LEd9I=
 github.com/segmentio/fasthash v1.0.3 h1:EI9+KE1EwvMLBWwjpRDc+fEM+prwxDYbslddQGtrmhM=
 github.com/segmentio/fasthash v1.0.3/go.mod h1:waKX8l2N8yckOgmSsXJi7x1ZfdKZ4x7KRMzBtS3oedY=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -61,6 +65,8 @@ golang.org/x/crypto v0.28.0 h1:GBDwsMXVQi34v5CCYUm2jkJvu4cbtru2U4TN2PSyQnw=
 golang.org/x/crypto v0.28.0/go.mod h1:rmgy+3RHxRZMyY0jjAJShp2zgEdOqj2AO7U0pYmeQ7U=
 golang.org/x/crypto v0.31.0 h1:ihbySMvVjLAeSH1IbfcRTkD/iNscyz8rGzjF/E5hV6U=
 golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
+golang.org/x/crypto v0.33.0 h1:IOBPskki6Lysi0lo9qQvbxiQ+FvsCC/YWOecCHAixus=
+golang.org/x/crypto v0.33.0/go.mod h1:bVdXmD7IV/4GdElGPozy6U7lWdRXA4qyRVGJV57uQ5M=
 golang.org/x/exp v0.0.0-20241217172543-b2144cdd0a67 h1:1UoZQm6f0P/ZO0w1Ri+f+ifG/gXhegadRdwBIXEFWDo=
 golang.org/x/exp v0.0.0-20241217172543-b2144cdd0a67/go.mod h1:qj5a5QZpwLU2NLQudwIN5koi3beDhSAlJwa67PuM98c=
 golang.org/x/image v0.0.0-20190321063152-3fc05d484e9f/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
@@ -80,10 +86,16 @@ golang.org/x/net v0.30.0 h1:AcW1SDZMkb8IpzCdQUaIq2sP4sZ4zw+55h6ynffypl4=
 golang.org/x/net v0.30.0/go.mod h1:2wGyMJ5iFasEhkwi13ChkO/t1ECNC4X4eBKkVFyYFlU=
 golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
 golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
+golang.org/x/net v0.34.0 h1:Mb7Mrk043xzHgnRM88suvJFwzVrRfHEHJEl5/71CKw0=
+golang.org/x/net v0.34.0/go.mod h1:di0qlW3YNM5oh6GqDGQr92MyTozJPmybPK4Ev/Gm31k=
+golang.org/x/net v0.35.0 h1:T5GQRQb2y08kTAByq9L4/bz8cipCdA8FbRTXewonqY8=
+golang.org/x/net v0.35.0/go.mod h1:EglIi67kWsHKlRzzVMUD93VMSWGFOMSZgxFjparz1Qk=
 golang.org/x/oauth2 v0.23.0 h1:PbgcYx2W7i4LvjJWEbf0ngHV6qJYr86PkAV3bXdLEbs=
 golang.org/x/oauth2 v0.23.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 golang.org/x/oauth2 v0.24.0 h1:KTBBxWqUa0ykRPLtV69rRto9TLXcqYkeswu48x/gvNE=
 golang.org/x/oauth2 v0.24.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/oauth2 v0.26.0 h1:afQXWNNaeC4nvZ0Ed9XvCCzXM6UHJG7iCg0W4fPqSBE=
+golang.org/x/oauth2 v0.26.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -112,6 +124,8 @@ golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
 golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
+golang.org/x/text v0.22.0 h1:bofq7m3/HAFvbF51jz3Q9wLg3jkvSPuiZu/pD1XwgtM=
+golang.org/x/text v0.22.0/go.mod h1:YRoo4H8PVmsu+E3Ou7cqLVH8oXWIHVoX0jqUWALQhfY=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
--- a/internal/item/schemas/0231_1.21.40.25_to_1.21.50.29_beta.json
+++ b/internal/item/schemas/0231_1.21.40.25_to_1.21.50.29_beta.json
@@ -0,0 +1,13 @@
+{
+    "remappedMetas": {
+        "minecraft:boat": {
+            "9": "minecraft:pale_oak_boat"
+        },
+        "minecraft:chest_boat": {
+            "9": "minecraft:pale_oak_chest_boat"
+        },
+        "minecraft:spawn_egg": {
+            "146": "minecraft:creaking_spawn_egg"
+        }
+    }
+}
--- a/legacyver/data/block_states_776.nbt
+++ b/legacyver/data/block_states_776.nbt
--- a/legacyver/data/item_runtime_ids_776.nbt
+++ b/legacyver/data/item_runtime_ids_776.nbt
--- a/legacyver/data/required_item_list_776.json
+++ b/legacyver/data/required_item_list_776.json
--- a/legacyver/item_translator.go
+++ b/legacyver/item_translator.go
@@ -3,8 +3,8 @@ package legacyver
 import (
 	"fmt"
 	"github.com/akmalfairuz/legacy-version/internal/item"
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
 	"github.com/akmalfairuz/legacy-version/mapping"
-	"github.com/akmalfairuz/legacy-version/packbuilder"
 	"github.com/df-mc/dragonfly/server/world"
 	"github.com/samber/lo"
 	"github.com/sandertv/gophertunnel/minecraft"
@@ -39,6 +39,10 @@ type ItemTranslator interface {
 	Register(item world.CustomItem, replacement string)
 	// CustomItems lists all custom items used as substitutes, with the runtime id as the key
 	CustomItems() map[int32]world.CustomItem
+	// DowngradeLegacyItemRegistry ...
+	DowngradeLegacyItemRegistry(entries []proto.LegacyItemRegistryEntry) []proto.LegacyItemRegistryEntry
+	// UpgradeLegacyItemRegistry ...
+	UpgradeLegacyItemRegistry(entries []proto.LegacyItemRegistryEntry) []proto.LegacyItemRegistryEntry
 }

 type DefaultItemTranslator struct {
@@ -480,15 +484,29 @@ func (t *DefaultItemTranslator) DowngradeItemPackets(pks []packet.Packet, _ *min
 				})
 				pk.EventData = (itemType.NetworkID << 16) | int32(itemType.MetadataValue)
 			}
-		case *packet.StartGame:
-			for i, entry := range pk.Items {
+			//case *packet.ItemRegistry:
+			//	for _, i := range t.CustomItems() {
+			//		name, _ := i.EncodeItem()
+			//		pk.Items = append(pk.Items, protocol.ItemEntry{
+			//			Name: name,
+			//			Data: packbuilder.Components(i),
+			//		})
+			//	}
+		}
+		result = append(result, pk)
+	}
+	return result
+}
+
+func (t *DefaultItemTranslator) DowngradeLegacyItemRegistry(entries []proto.LegacyItemRegistryEntry) []proto.LegacyItemRegistryEntry {
+	for i, entry := range entries {
 		if !entry.ComponentBased {
 			itemType := t.DowngradeItemType(protocol.ItemType{
 				NetworkID:     int32(entry.RuntimeID),
 				MetadataValue: 0,
 			})
 			if itemType.NetworkID == t.mapping.Air() {
-						removeIndex(pk.Items, i)
+				removeIndex(entries, i)
 				continue
 			}
 			entry.RuntimeID = int16(itemType.NetworkID)
@@ -498,31 +516,50 @@ func (t *DefaultItemTranslator) DowngradeItemPackets(pks []packet.Packet, _ *min
 				panic(itemType)
 			}
 		} else {
-					t.latest.RegisterEntry(entry.Name)
+			t.latest.RegisterEntryRID(entry.Name, int32(entry.RuntimeID), 2)
 			entry.RuntimeID = int16(t.mapping.RegisterEntry(entry.Name))
 		}
-				pk.Items[i] = entry
+		entries[i] = entry
 	}
 	for rid, i := range t.CustomItems() {
 		name, _ := i.EncodeItem()
-				pk.Items = append(pk.Items, protocol.ItemEntry{
+		entries = append(entries, proto.LegacyItemRegistryEntry{
 			Name:           name,
 			RuntimeID:      int16(rid),
 			ComponentBased: true,
 		})
 	}
-		case *packet.ItemComponent:
-			for _, i := range t.CustomItems() {
+	return entries
+}
+
+func (t *DefaultItemTranslator) UpgradeLegacyItemRegistry(entries []proto.LegacyItemRegistryEntry) []proto.LegacyItemRegistryEntry {
+	for i, entry := range entries {
+		if !entry.ComponentBased {
+			itemType := t.UpgradeItemType(protocol.ItemType{
+				NetworkID:     int32(entry.RuntimeID),
+				MetadataValue: 0,
+			})
+			entry.RuntimeID = int16(itemType.NetworkID)
+
+			var ok bool
+			if entry.Name, ok = t.latest.ItemRuntimeIDToName(itemType.NetworkID); !ok {
+				panic(itemType)
+			}
+		} else {
+			t.latest.RegisterEntryRID(entry.Name, int32(entry.RuntimeID), 2)
+			entry.RuntimeID = int16(t.mapping.RegisterEntry(entry.Name))
+		}
+		entries[i] = entry
+	}
+	for rid, i := range t.CustomItems() {
 		name, _ := i.EncodeItem()
-				pk.Items = append(pk.Items, protocol.ItemComponentEntry{
+		entries = append(entries, proto.LegacyItemRegistryEntry{
 			Name:           name,
-					Data: packbuilder.Components(i),
+			RuntimeID:      int16(rid),
+			ComponentBased: true,
 		})
 	}
-		}
-		result = append(result, pk)
-	}
-	return result
+	return entries
 }

 func (t *DefaultItemTranslator) UpgradeItemPackets(pks []packet.Packet, _ *minecraft.Conn) (result []packet.Packet) {
@@ -703,41 +740,14 @@ func (t *DefaultItemTranslator) UpgradeItemPackets(pks []packet.Packet, _ *minec
 				})
 				pk.EventData = (itemType.NetworkID << 16) | int32(itemType.MetadataValue)
 			}
-		case *packet.StartGame:
-			for i, entry := range pk.Items {
-				if !entry.ComponentBased {
-					itemType := t.UpgradeItemType(protocol.ItemType{
-						NetworkID:     int32(entry.RuntimeID),
-						MetadataValue: 0,
-					})
-					entry.RuntimeID = int16(itemType.NetworkID)
-
-					var ok bool
-					if entry.Name, ok = t.latest.ItemRuntimeIDToName(itemType.NetworkID); !ok {
-						panic(itemType)
-					}
-				} else {
-					t.latest.RegisterEntry(entry.Name)
-					entry.RuntimeID = int16(t.mapping.RegisterEntry(entry.Name))
-				}
-				pk.Items[i] = entry
-			}
-			for rid, i := range t.CustomItems() {
-				name, _ := i.EncodeItem()
-				pk.Items = append(pk.Items, protocol.ItemEntry{
-					Name:           name,
-					RuntimeID:      int16(rid),
-					ComponentBased: true,
-				})
-			}
-		case *packet.ItemComponent:
-			for _, i := range t.CustomItems() {
-				name, _ := i.EncodeItem()
-				pk.Items = append(pk.Items, protocol.ItemComponentEntry{
-					Name: name,
-					Data: packbuilder.Components(i),
-				})
-			}
+			//case *packet.ItemRegistry:
+			//	for _, i := range t.CustomItems() {
+			//		name, _ := i.EncodeItem()
+			//		pk.Items = append(pk.Items, protocol.ItemEntry{
+			//			Name: name,
+			//			Data: packbuilder.Components(i),
+			//		})
+			//	}
 		}
 		result = append(result, pk)
 	}
--- a/legacyver/legacypacket/add_player.go
+++ b/legacyver/legacypacket/add_player.go
@@ -53,7 +53,7 @@ type AddPlayer struct {
 	// attributes of the entity.
 	EntityProperties protocol.EntityProperties
 	// AbilityData represents various data about the abilities of a player, such as ability layers or permissions.
-	AbilityData protocol.AbilityData
+	AbilityData proto.AbilityData
 	// EntityLinks is a list of entity links that are currently active on the player. These links alter the
 	// way the player shows up when first spawned in terms of it shown as riding an entity. Setting these
 	// links is important for new viewers to see the player is riding another entity.
--- a/legacyver/legacypacket/boss_event.go
+++ b/legacyver/legacypacket/boss_event.go
@@ -0,0 +1,115 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+const (
+	BossEventShow = iota
+	BossEventRegisterPlayer
+	BossEventHide
+	BossEventUnregisterPlayer
+	BossEventHealthPercentage
+	BossEventTitle
+	BossEventAppearanceProperties
+	BossEventTexture
+	BossEventRequest
+)
+
+const (
+	BossEventColourGrey = iota
+	BossEventColourBlue
+	BossEventColourRed
+	BossEventColourGreen
+	BossEventColourYellow
+	BossEventColourPurple
+	BossEventColourWhite
+)
+
+// BossEvent is sent by the server to make a specific 'boss event' occur in the
+// world. It includes features such as showing a boss bar to the player and
+// turning the sky dark.
+type BossEvent struct {
+	// BossEntityUniqueID is the unique ID of the boss entity that the boss
+	// event sent involves. By default, the health percentage and title of the
+	// boss bar depend on the health and name tag of this entity. If
+	// BossEntityUniqueID is the same as the client's entity unique ID, its
+	// HealthPercentage and BossBarTitle can be freely altered.
+	BossEntityUniqueID int64
+	// EventType is the type of the event. The fields written depend on the
+	// event type set, and some event types are sent by the client, whereas
+	// others are sent by the server. The event type is one of the constants
+	// above.
+	EventType uint32
+	// PlayerUniqueID is the unique ID of the player that is registered to or
+	// unregistered from the boss fight. It is set if EventType is either
+	// BossEventRegisterPlayer or BossEventUnregisterPlayer.
+	PlayerUniqueID int64
+	// BossBarTitle is the title shown above the boss bar. It may be set to set
+	// a different title if the BossEntityUniqueID matches the client's entity
+	// unique ID.
+	BossBarTitle string
+	// FilteredBossBarTitle is a filtered version of BossBarTitle with all the
+	// profanity removed. The client will use this over BossBarTitle if this
+	// field is not empty and they have the "Filter Profanity" setting enabled.
+	FilteredBossBarTitle string
+	// HealthPercentage is the percentage of health that is shown in the boss
+	// bar (0.0-1.0). The HealthPercentage may be set to a specific value if the
+	// BossEntityUniqueID matches the client's entity unique ID.
+	HealthPercentage float32
+	// ScreenDarkening currently seems not to do anything.
+	ScreenDarkening uint16
+	// Colour is the colour of the boss bar that is shown when a player is
+	// subscribed. It is only set if the EventType is BossEventShow,
+	// BossEventAppearanceProperties or BossEventTexture. This is functional as
+	// of 1.18 and can be any of the BossEventColour constants listed above.
+	Colour uint32
+	// Overlay is the overlay of the boss bar that is shown on top of the boss
+	// bar when a player is subscribed. It currently does not function. It is
+	// only set if the EventType is BossEventShow, BossEventAppearanceProperties
+	// or BossEventTexture.
+	Overlay uint32
+}
+
+// ID ...
+func (*BossEvent) ID() uint32 {
+	return packet.IDBossEvent
+}
+
+func (pk *BossEvent) Marshal(io protocol.IO) {
+	io.Varint64(&pk.BossEntityUniqueID)
+	io.Varuint32(&pk.EventType)
+	switch pk.EventType {
+	case BossEventShow:
+		io.String(&pk.BossBarTitle)
+		if proto.IsProtoGTE(io, proto.ID776) {
+			io.String(&pk.FilteredBossBarTitle)
+		}
+		io.Float32(&pk.HealthPercentage)
+		io.Uint16(&pk.ScreenDarkening)
+		io.Varuint32(&pk.Colour)
+		io.Varuint32(&pk.Overlay)
+	case BossEventRegisterPlayer, BossEventUnregisterPlayer, BossEventRequest:
+		io.Varint64(&pk.PlayerUniqueID)
+	case BossEventHide:
+		// No extra payload for this boss event type.
+	case BossEventHealthPercentage:
+		io.Float32(&pk.HealthPercentage)
+	case BossEventTitle:
+		io.String(&pk.BossBarTitle)
+		if proto.IsProtoGTE(io, proto.ID776) {
+			io.String(&pk.FilteredBossBarTitle)
+		}
+	case BossEventAppearanceProperties:
+		io.Uint16(&pk.ScreenDarkening)
+		io.Varuint32(&pk.Colour)
+		io.Varuint32(&pk.Overlay)
+	case BossEventTexture:
+		io.Varuint32(&pk.Colour)
+		io.Varuint32(&pk.Overlay)
+	default:
+		io.UnknownEnumOption(pk.EventType, "boss event type")
+	}
+}
--- a/legacyver/legacypacket/camera_aim_assist_presets.go
+++ b/legacyver/legacypacket/camera_aim_assist_presets.go
@@ -0,0 +1,36 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+const (
+	CameraAunAssistPresetOperationSet = iota
+	CameraAunAssistPresetOperationAddToExisting
+)
+
+// CameraAimAssistPresets is sent by the server to the client to provide a list of categories and presets
+// that can be used when sending a CameraAimAssist packet or a CameraInstruction including aim assist.
+type CameraAimAssistPresets struct {
+	// CategoryGroups is a list of groups of categories which can be referenced by one of the Presets.
+	CategoryGroups []protocol.CameraAimAssistCategoryGroup
+	// Presets is a list of presets which define a base for how aim assist should behave
+	Presets []protocol.CameraAimAssistPreset
+	// Operation is the operation to perform with the presets. It is one of the constants above.
+	Operation byte
+}
+
+// ID ...
+func (*CameraAimAssistPresets) ID() uint32 {
+	return packet.IDCameraAimAssistPresets
+}
+
+func (pk *CameraAimAssistPresets) Marshal(io protocol.IO) {
+	protocol.Slice(io, &pk.CategoryGroups)
+	protocol.Slice(io, &pk.Presets)
+	if proto.IsProtoGTE(io, proto.ID776) {
+		io.Uint8(&pk.Operation)
+	}
+}
--- a/legacyver/legacypacket/client_cheat_ability.go
+++ b/legacyver/legacypacket/client_cheat_ability.go
@@ -0,0 +1,24 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// ClientCheatAbility functions the same as UpdateAbilities. It is unclear why these two were separated.
+//
+// Deprecated: ClientCheatAbility is deprecated as of 1.20.10.
+type ClientCheatAbility struct {
+	// AbilityData represents various data about the abilities of a player, such as ability layers or permissions.
+	AbilityData proto.AbilityData
+}
+
+// ID ...
+func (*ClientCheatAbility) ID() uint32 {
+	return packet.IDClientCheatAbility
+}
+
+func (pk *ClientCheatAbility) Marshal(io protocol.IO) {
+	protocol.Single(io, &pk.AbilityData)
+}
--- a/legacyver/legacypacket/command_block_update.go
+++ b/legacyver/legacypacket/command_block_update.go
@@ -0,0 +1,88 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+const (
+	CommandBlockImpulse = iota
+	CommandBlockRepeating
+	CommandBlockChain
+)
+
+// CommandBlockUpdate is sent by the client to update a command block at a specific position. The command
+// block may be either a physical block or an entity.
+type CommandBlockUpdate struct {
+	// Block specifies if the command block updated was an actual physical block. If false, the command block
+	// is in a minecart and has an entity runtime ID instead.
+	Block bool
+
+	// Position is the position of the command block updated. It is only set if Block is set to true. Nothing
+	// happens if no command block is set at this position.
+	Position protocol.BlockPos
+	// Mode is the mode of the command block. It is either CommandBlockImpulse, CommandBlockChain or
+	// CommandBlockRepeat. It is only set if Block is set to true.
+	Mode uint32
+	// NeedsRedstone specifies if the command block needs to be powered by redstone to be activated. If false,
+	// the command block is always active. The field is only set if Block is set to true.
+	NeedsRedstone bool
+	// Conditional specifies the behaviour of the command block if the command block before it (the opposite
+	// side of the direction the arrow if facing) fails to execute. If set to false, it will activate at all
+	// times, whereas if set to true, it will activate only if the previous command block executed
+	// successfully. The field is only set if Block is set to true.
+	Conditional bool
+
+	// MinecartEntityRuntimeID is the runtime ID of the minecart entity carrying the command block that is
+	// updated. It is set only if Block is set to false.
+	MinecartEntityRuntimeID uint64
+
+	// Command is the command currently entered in the command block. This is the command that is executed
+	// when the command block is activated.
+	Command string
+	// LastOutput is the output of the last command executed by the command block. It may be left empty to
+	// show simply no output at all, in combination with setting ShouldTrackOutput to false.
+	LastOutput string
+	// Name is the name of the command block updated. If not empty, it will show this name hovering above the
+	// command block when hovering over the block with the cursor.
+	Name string
+	// FilteredName is a filtered version of Name with all the profanity removed. The client will use this
+	// over Name if this field is not empty and they have the "Filter Profanity" setting enabled.
+	FilteredName string
+	// ShouldTrackOutput specifies if the command block tracks output. If set to false, the output box won't
+	// be shown within the command block.
+	ShouldTrackOutput bool
+	// TickDelay is the delay in ticks between executions of a command block, if it is a repeating command
+	// block.
+	TickDelay int32
+	// ExecuteOnFirstTick specifies if the command block should execute on the first tick, AKA as soon as the
+	// command block is enabled.
+	ExecuteOnFirstTick bool
+}
+
+// ID ...
+func (*CommandBlockUpdate) ID() uint32 {
+	return packet.IDCommandBlockUpdate
+}
+
+func (pk *CommandBlockUpdate) Marshal(io protocol.IO) {
+	io.Bool(&pk.Block)
+	if pk.Block {
+		io.UBlockPos(&pk.Position)
+		io.Varuint32(&pk.Mode)
+		io.Bool(&pk.NeedsRedstone)
+		io.Bool(&pk.Conditional)
+	} else {
+		io.Varuint64(&pk.MinecartEntityRuntimeID)
+	}
+	io.String(&pk.Command)
+	io.String(&pk.LastOutput)
+	io.String(&pk.Name)
+	if proto.IsProtoGTE(io, proto.ID776) {
+		io.String(&pk.FilteredName)
+	}
+	io.Bool(&pk.ShouldTrackOutput)
+	io.Int32(&pk.TickDelay)
+	io.Bool(&pk.ExecuteOnFirstTick)
+}
--- a/legacyver/legacypacket/creative_content.go
+++ b/legacyver/legacypacket/creative_content.go
@@ -0,0 +1,53 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// CreativeContent is a packet sent by the server to set the creative inventory's content for a player.
+// Introduced in 1.16, this packet replaces the previous method - sending an InventoryContent packet with
+// creative inventory window ID.
+// As of v1.21.60, this packet is no longer required to be sent as part of the login sequence however the
+// client will crash if they try to open their creative inventory before receiving this packet. Every item
+// must be part of a group, any items that are not part of a group will need to reference an "anonymous group"
+// which has an empty name OR no icon. The order of Groups and Items is how the client will render items
+// in the creative inventory compared to the previous, hard coded order.
+//
+// Below is an example of defining 2 ungrouped items, 2 grouped items and then another 2 ungrouped items, all
+// in the nature category.
+//
+//	CreativeContent{
+//		Groups: []protocol.CreativeGroup{
+//			{Category: 1}, // No name or icon, this is the "anonymous group"
+//			{Category: 1, Name: "itemGroup.name.planks", Icon: protocol.ItemStack{...}}, // A "planks" group
+//			{Category: 1}, // Another "anonymous group"
+//		},
+//		Items: []protocol.CreativeItem{
+//			{CreativeItemNetworkID: 0, Item: protocol.ItemStack{...}, GroupIndex: 0}, // Ungrouped before "planks"
+//			{CreativeItemNetworkID: 1, Item: protocol.ItemStack{...}, GroupIndex: 0}, // Ungrouped before "planks"
+//			{CreativeItemNetworkID: 2, Item: protocol.ItemStack{...}, GroupIndex: 1}, // Grouped under the "planks" group
+//			{CreativeItemNetworkID: 3, Item: protocol.ItemStack{...}, GroupIndex: 1}, // Grouped under the "planks" group
+//			{CreativeItemNetworkID: 4, Item: protocol.ItemStack{...}, GroupIndex: 2}, // Ungrouped after "planks"
+//			{CreativeItemNetworkID: 5, Item: protocol.ItemStack{...}, GroupIndex: 2}, // Ungrouped after "planks"
+//		}
+//	}
+type CreativeContent struct {
+	// Groups is a list of the groups that should be added to the creative inventory.
+	Groups []protocol.CreativeGroup
+	// Items is a list of the items that should be added to the creative inventory.
+	Items []proto.CreativeItem
+}
+
+// ID ...
+func (*CreativeContent) ID() uint32 {
+	return packet.IDCreativeContent
+}
+
+func (pk *CreativeContent) Marshal(io protocol.IO) {
+	if proto.IsProtoGTE(io, proto.ID776) {
+		protocol.Slice(io, &pk.Groups)
+	}
+	protocol.Slice(io, &pk.Items)
+}
--- a/legacyver/legacypacket/item_registry.go
+++ b/legacyver/legacypacket/item_registry.go
@@ -0,0 +1,25 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// ItemRegistry is sent by the server to send the client a list of available items and attach client-side
+// components to a custom item. This packet was formerly known as the ItemComponent packet before 1.21.60,
+// which did not include item definitions but only the components.
+type ItemRegistry struct {
+	// Items is a list of all items with their legacy IDs which are available in the game. Failing to send any
+	// of the items that are in the game will crash mobile clients. Any custom components are also attached to
+	// the items in this list.
+	Items []proto.ItemEntry
+}
+
+// ID ...
+func (*ItemRegistry) ID() uint32 {
+	return packet.IDItemRegistry
+}
+func (pk *ItemRegistry) Marshal(io protocol.IO) {
+	protocol.Slice(io, &pk.Items)
+}
--- a/legacyver/legacypacket/start_game.go
+++ b/legacyver/legacypacket/start_game.go
@@ -200,7 +200,7 @@ type StartGame struct {
 	Blocks []protocol.BlockEntry
 	// Items is a list of all items with their legacy IDs which are available in the game. Failing to send any
 	// of the items that are in the game will crash mobile clients.
-	Items []protocol.ItemEntry
+	Items []proto.LegacyItemRegistryEntry
 	// MultiPlayerCorrelationID is a unique ID specifying the multi-player session of the player. A random
 	// UUID should be filled out for this field.
 	MultiPlayerCorrelationID string
@@ -316,7 +316,11 @@ func (pk *StartGame) Marshal(io protocol.IO) {
 	io.Int64(&pk.Time)
 	io.Varint32(&pk.EnchantmentSeed)
 	protocol.Slice(io, &pk.Blocks)
+	if proto.IsProtoLT(io, proto.ID776) {
 		protocol.Slice(io, &pk.Items)
+	} else {
+		proto.EmptySlice(io, &pk.Items)
+	}
 	io.String(&pk.MultiPlayerCorrelationID)
 	io.Bool(&pk.ServerAuthoritativeInventory)
 	io.String(&pk.GameVersion)
--- a/legacyver/legacypacket/structure_block_update.go
+++ b/legacyver/legacypacket/structure_block_update.go
@@ -0,0 +1,82 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+const (
+	StructureBlockData = iota
+	StructureBlockSave
+	StructureBlockLoad
+	StructureBlockCorner
+	StructureBlockInvalid
+	StructureBlockExport
+)
+
+const (
+	StructureRedstoneSaveModeMemory = iota
+	StructureRedstoneSaveModeDisk
+)
+
+// StructureBlockUpdate is sent by the client when it updates a structure block using the in-game UI. The
+// data it contains depends on the type of structure block that it is. In Minecraft Bedrock Edition v1.11,
+// there is only the Export structure block type, but in v1.13 the ones present in Java Edition will,
+// according to the wiki, be added too.
+type StructureBlockUpdate struct {
+	// Position is the position of the structure block that is updated.
+	Position protocol.BlockPos
+	// StructureName is the name of the structure that was set in the structure block's UI. This is the name
+	// used to export the structure to a file.
+	StructureName string
+	// FilteredStructureName is a filtered version of StructureName with all the profanity removed. The client
+	// will use this over StructureName if this field is not empty and they have the "Filter Profanity"
+	// setting enabled.
+	FilteredStructureName string
+	// DataField is the name of a function to run, usually used during natural generation. A description can
+	// be found here: https://minecraft.wiki/w/Structure_Block#Data.
+	DataField string
+	// IncludePlayers specifies if the 'Include Players' toggle has been enabled, meaning players are also
+	// exported by the structure block.
+	IncludePlayers bool
+	// ShowBoundingBox specifies if the structure block should have its bounds outlined. A thin line will
+	// encapsulate the bounds of the structure if set to true.
+	ShowBoundingBox bool
+	// StructureBlockType is the type of the structure block updated. A list of structure block types that
+	// will be used can be found in the constants above.
+	StructureBlockType int32
+	// Settings is a struct of settings that should be used for exporting the structure. These settings are
+	// identical to the last sent in the StructureBlockUpdate packet by the client.
+	Settings protocol.StructureSettings
+	// RedstoneSaveMode is the mode that should be used to save the structure when used with redstone. In
+	// Java Edition, this is always stored in memory, but in Bedrock Edition it can be stored either to disk
+	// or memory. See the constants above for the options.
+	RedstoneSaveMode int32
+	// ShouldTrigger specifies if the structure block should be triggered immediately after this packet
+	// reaches the server.
+	ShouldTrigger bool
+	// Waterlogged specifies if non-air blocks replace water or combine with water.
+	Waterlogged bool
+}
+
+// ID ...
+func (*StructureBlockUpdate) ID() uint32 {
+	return packet.IDStructureBlockUpdate
+}
+
+func (pk *StructureBlockUpdate) Marshal(io protocol.IO) {
+	io.UBlockPos(&pk.Position)
+	io.String(&pk.StructureName)
+	if proto.IsProtoGTE(io, proto.ID776) {
+		io.String(&pk.FilteredStructureName)
+	}
+	io.String(&pk.DataField)
+	io.Bool(&pk.IncludePlayers)
+	io.Bool(&pk.ShowBoundingBox)
+	io.Varint32(&pk.StructureBlockType)
+	protocol.Single(io, &pk.Settings)
+	io.Varint32(&pk.RedstoneSaveMode)
+	io.Bool(&pk.ShouldTrigger)
+	io.Bool(&pk.Waterlogged)
+}
--- a/legacyver/legacypacket/update_abilities.go
+++ b/legacyver/legacypacket/update_abilities.go
@@ -0,0 +1,23 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// UpdateAbilities is a packet sent from the server to the client to update the abilities of the player. It, along with
+// the UpdateAdventureSettings packet, are replacements of the AdventureSettings packet since v1.19.10.
+type UpdateAbilities struct {
+	// AbilityData represents various data about the abilities of a player, such as ability layers or permissions.
+	AbilityData proto.AbilityData
+}
+
+// ID ...
+func (*UpdateAbilities) ID() uint32 {
+	return packet.IDUpdateAbilities
+}
+
+func (pk *UpdateAbilities) Marshal(io protocol.IO) {
+	protocol.Single(io, &pk.AbilityData)
+}
--- a/legacyver/proto/ability.go
+++ b/legacyver/proto/ability.go
@@ -0,0 +1,108 @@
+package proto
+
+import (
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+)
+
+// AbilityData represents various data about the abilities of a player, such as ability layers or permissions.
+type AbilityData struct {
+	// EntityUniqueID is a unique identifier of the player. It appears it is not required to fill this field
+	// out with a correct value. Simply writing 0 seems to work.
+	EntityUniqueID int64
+	// PlayerPermissions is the permission level of the player as it shows up in the player list built up using
+	// the PlayerList packet.
+	PlayerPermissions byte
+	// CommandPermissions is a set of permissions that specify what commands a player is allowed to execute.
+	CommandPermissions byte
+	// Layers contains all ability layers and their potential values. This should at least have one entry, being the
+	// base layer.
+	Layers []AbilityLayer
+}
+
+// Marshal encodes/decodes an AbilityData.
+func (x *AbilityData) Marshal(r protocol.IO) {
+	r.Int64(&x.EntityUniqueID)
+	r.Uint8(&x.PlayerPermissions)
+	r.Uint8(&x.CommandPermissions)
+	protocol.SliceUint8Length(r, &x.Layers)
+}
+
+// ToLatest ...
+func (x *AbilityData) ToLatest() protocol.AbilityData {
+	layers := make([]protocol.AbilityLayer, len(x.Layers))
+	for i, layer := range x.Layers {
+		layers[i] = layer.ToLatest()
+	}
+	return protocol.AbilityData{
+		EntityUniqueID:     x.EntityUniqueID,
+		PlayerPermissions:  x.PlayerPermissions,
+		CommandPermissions: x.CommandPermissions,
+		Layers:             layers,
+	}
+}
+
+// FromLatest ...
+func (x *AbilityData) FromLatest(y protocol.AbilityData) AbilityData {
+	layers := make([]AbilityLayer, len(y.Layers))
+	for i, layer := range y.Layers {
+		layers[i] = (&AbilityLayer{}).FromLatest(layer)
+	}
+	x.EntityUniqueID = y.EntityUniqueID
+	x.PlayerPermissions = y.PlayerPermissions
+	x.CommandPermissions = y.CommandPermissions
+	x.Layers = layers
+	return *x
+}
+
+// AbilityLayer represents the abilities of a specific layer, such as the base layer or the spectator layer.
+type AbilityLayer struct {
+	// Type represents the type of the layer. This is one of the AbilityLayerType constants defined above.
+	Type uint16
+	// Abilities is a set of abilities that are enabled for the layer. This is one of the Ability constants defined
+	// above.
+	Abilities uint32
+	// Values is a set of values that are associated with the enabled abilities, representing the values of the
+	// abilities.
+	Values uint32
+	// FlySpeed is the default horizontal fly speed of the layer.
+	FlySpeed float32
+	// VerticalFlySpeed is the default vertical fly speed of the layer.
+	VerticalFlySpeed float32
+	// WalkSpeed is the default walk speed of the layer.
+	WalkSpeed float32
+}
+
+// Marshal encodes/decodes an AbilityLayer.
+func (x *AbilityLayer) Marshal(r protocol.IO) {
+	r.Uint16(&x.Type)
+	r.Uint32(&x.Abilities)
+	r.Uint32(&x.Values)
+	r.Float32(&x.FlySpeed)
+	if IsProtoGTE(r, ID776) {
+		r.Float32(&x.VerticalFlySpeed)
+	}
+	r.Float32(&x.WalkSpeed)
+}
+
+// ToLatest ...
+func (x *AbilityLayer) ToLatest() protocol.AbilityLayer {
+	return protocol.AbilityLayer{
+		Type:             x.Type,
+		Abilities:        x.Abilities,
+		Values:           x.Values,
+		FlySpeed:         x.FlySpeed,
+		VerticalFlySpeed: x.VerticalFlySpeed,
+		WalkSpeed:        x.WalkSpeed,
+	}
+}
+
+// FromLatest ...
+func (x *AbilityLayer) FromLatest(y protocol.AbilityLayer) AbilityLayer {
+	x.Type = y.Type
+	x.Abilities = y.Abilities
+	x.Values = y.Values
+	x.FlySpeed = y.FlySpeed
+	x.VerticalFlySpeed = y.VerticalFlySpeed
+	x.WalkSpeed = y.WalkSpeed
+	return *x
+}
--- a/legacyver/proto/camera.go
+++ b/legacyver/proto/camera.go
@@ -41,6 +41,10 @@ type CameraPreset struct {
 	// Radius is only used in a follow_orbit camera and controls how far away from the player the camera should
 	// be rendered.
 	Radius protocol.Optional[float32]
+	// MinYawLimit is the minimum yaw limit of the camera.
+	MinYawLimit protocol.Optional[float32]
+	// MaxYawLimit is the maximum yaw limit of the camera.
+	MaxYawLimit protocol.Optional[float32]
 	// AudioListener defines where the audio should be played from when using this preset. This is one of the
 	// constants above.
 	AudioListener protocol.Optional[byte]
@@ -95,6 +99,8 @@ func (x *CameraPreset) ToLatest() protocol.CameraPreset {
 		ViewOffset:                  x.ViewOffset,
 		EntityOffset:                x.EntityOffset,
 		Radius:                      x.Radius,
+		MinYawLimit:                 x.MinYawLimit,
+		MaxYawLimit:                 x.MaxYawLimit,
 		AudioListener:               x.AudioListener,
 		PlayerEffects:               x.PlayerEffects,
 		AlignTargetAndCameraForward: x.AlignTargetAndCameraForward,
@@ -123,6 +129,10 @@ func (x *CameraPreset) Marshal(r protocol.IO) {
 	if IsProtoGTE(r, ID766) {
 		protocol.OptionalFunc(r, &x.TrackingRadius, r.Float32)
 	}
+	if IsProtoGTE(r, ID776) {
+		protocol.OptionalFunc(r, &x.MinYawLimit, r.Float32)
+		protocol.OptionalFunc(r, &x.MaxYawLimit, r.Float32)
+	}
 	protocol.OptionalFunc(r, &x.ViewOffset, r.Vec2)
 	if IsProtoGTE(r, ID729) {
 		protocol.OptionalFunc(r, &x.EntityOffset, r.Vec3)
--- a/legacyver/proto/creative.go
+++ b/legacyver/proto/creative.go
@@ -0,0 +1,41 @@
+package proto
+
+import "github.com/sandertv/gophertunnel/minecraft/protocol"
+
+// CreativeItem represents a creative item present in the creative inventory.
+type CreativeItem struct {
+	// CreativeItemNetworkID is a unique ID for the creative item. It has to be unique for each creative item
+	// sent to the client. An incrementing ID per creative item does the job.
+	CreativeItemNetworkID uint32
+	// Item is the item that should be added to the creative inventory.
+	Item protocol.ItemStack
+	// GroupIndex is the index of the group that the item should be placed in. It is the index of the group in
+	// the CreativeContent packet previously sent to the client.
+	GroupIndex uint32
+}
+
+// ToLatest ...
+func (x *CreativeItem) ToLatest() protocol.CreativeItem {
+	return protocol.CreativeItem{
+		CreativeItemNetworkID: x.CreativeItemNetworkID,
+		Item:                  x.Item,
+		GroupIndex:            x.GroupIndex,
+	}
+}
+
+// FromLatest ...
+func (x *CreativeItem) FromLatest(y protocol.CreativeItem) CreativeItem {
+	x.CreativeItemNetworkID = y.CreativeItemNetworkID
+	x.Item = y.Item
+	x.GroupIndex = y.GroupIndex
+	return *x
+}
+
+// Marshal encodes/decodes a CreativeItem.
+func (x *CreativeItem) Marshal(r protocol.IO) {
+	r.Varuint32(&x.CreativeItemNetworkID)
+	r.Item(&x.Item)
+	if IsProtoGTE(r, ID776) {
+		r.Varuint32(&x.GroupIndex)
+	}
+}
--- a/legacyver/proto/id.go
+++ b/legacyver/proto/id.go
@@ -3,6 +3,7 @@ package proto
 import "github.com/sandertv/gophertunnel/minecraft/protocol"

 const (
+	ID776 = 776 // v1.21.60
 	ID766 = 766 // v1.21.50
 	ID748 = 748 // v1.21.40
 	ID729 = 729 // v1.21.30
--- a/legacyver/proto/item.go
+++ b/legacyver/proto/item.go
@@ -0,0 +1,92 @@
+package proto
+
+import (
+	"github.com/sandertv/gophertunnel/minecraft/nbt"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+)
+
+// LegacyItemRegistryEntry is an item sent in the StartGame item table. It holds a name and a legacy ID, which is used to
+// point back to that name.
+type LegacyItemRegistryEntry struct {
+	// Name if the name of the item, which is a name like 'minecraft:stick'.
+	Name string
+	// RuntimeID is the ID that is used to identify the item over network. After sending all items in the
+	// StartGame packet, items will then be identified using these numerical IDs.
+	RuntimeID int16
+	// ComponentBased specifies if the item was created using components, meaning the item is a custom item.
+	ComponentBased bool
+}
+
+// Marshal encodes/decodes an LegacyItemRegistryEntry.
+func (x *LegacyItemRegistryEntry) Marshal(r protocol.IO) {
+	r.String(&x.Name)
+	r.Int16(&x.RuntimeID)
+	r.Bool(&x.ComponentBased)
+}
+
+// FromLatest ...
+func (x *LegacyItemRegistryEntry) FromLatest(y protocol.ItemEntry) LegacyItemRegistryEntry {
+	x.Name = y.Name
+	x.RuntimeID = y.RuntimeID
+	x.ComponentBased = y.ComponentBased
+	return *x
+}
+
+// ToLatest ...
+func (x *LegacyItemRegistryEntry) ToLatest() protocol.ItemEntry {
+	return protocol.ItemEntry{
+		Name:           x.Name,
+		RuntimeID:      x.RuntimeID,
+		ComponentBased: x.ComponentBased,
+		Version:        2,
+	}
+}
+
+// ItemEntry is an item sent in the StartGame item table. It holds a name and a legacy ID, which is used to
+// point back to that name.
+type ItemEntry struct {
+	// Name if the name of the item, which is a name like 'minecraft:stick'.
+	Name string
+	// RuntimeID is the ID that is used to identify the item over network. After sending all items in the
+	// StartGame packet, items will then be identified using these numerical IDs.
+	RuntimeID int16
+	// ComponentBased specifies if the item was created using components, meaning the item is a custom item.
+	ComponentBased bool
+	// Version is the version of the item entry which is used by the client to determine how to handle the
+	// item entry. It is one of the constants above.
+	Version int32
+	// Data is a map containing the components and properties of the item, if the item is component based.
+	Data map[string]any
+}
+
+// ToLatest ...
+func (x *ItemEntry) ToLatest() protocol.ItemEntry {
+	return protocol.ItemEntry{
+		Name:           x.Name,
+		RuntimeID:      x.RuntimeID,
+		ComponentBased: x.ComponentBased,
+		Version:        x.Version,
+		Data:           x.Data,
+	}
+}
+
+// FromLatest ...
+func (x *ItemEntry) FromLatest(y protocol.ItemEntry) ItemEntry {
+	x.Name = y.Name
+	x.RuntimeID = y.RuntimeID
+	x.ComponentBased = y.ComponentBased
+	x.Version = y.Version
+	x.Data = y.Data
+	return *x
+}
+
+// Marshal encodes/decodes an ItemEntry.
+func (x *ItemEntry) Marshal(r protocol.IO) {
+	r.String(&x.Name)
+	if IsProtoGTE(r, ID776) {
+		r.Int16(&x.RuntimeID)
+		r.Bool(&x.ComponentBased)
+		r.Varint32(&x.Version)
+	}
+	r.NBT(&x.Data, nbt.NetworkLittleEndian)
+}
--- a/legacyver/protocol.go
+++ b/legacyver/protocol.go
@@ -20,6 +20,10 @@ func init() {
 	for pkId, cur := range packetPoolClient {
 		packetPoolClient[pkId] = convertPacketFunc(pkId, cur)
 	}
+
+	for pkId, cur := range packetPoolServer {
+		packetPoolServer[pkId] = convertPacketFunc(pkId, cur)
+	}
 }

 func convertPacketFunc(pid uint32, cur func() packet.Packet) func() packet.Packet {
@@ -86,6 +90,22 @@ func convertPacketFunc(pid uint32, cur func() packet.Packet) func() packet.Packe
 		return func() packet.Packet { return &legacypacket.StartGame{} }
 	case packet.IDCodeBuilderSource:
 		return func() packet.Packet { return &legacypacket.CodeBuilderSource{} }
+	case packet.IDItemRegistry:
+		return func() packet.Packet { return &legacypacket.ItemRegistry{} }
+	case packet.IDStructureBlockUpdate:
+		return func() packet.Packet { return &legacypacket.StructureBlockUpdate{} }
+	case packet.IDBossEvent:
+		return func() packet.Packet { return &legacypacket.BossEvent{} }
+	case packet.IDCameraAimAssistPresets:
+		return func() packet.Packet { return &legacypacket.CameraAimAssistPresets{} }
+	case packet.IDCommandBlockUpdate:
+		return func() packet.Packet { return &legacypacket.CommandBlockUpdate{} }
+	case packet.IDCreativeContent:
+		return func() packet.Packet { return &legacypacket.CreativeContent{} }
+	case packet.IDUpdateAbilities:
+		return func() packet.Packet { return &legacypacket.UpdateAbilities{} }
+	case packet.IDClientCheatAbility:
+		return func() packet.Packet { return &legacypacket.ClientCheatAbility{} }
 	default:
 		return cur
 	}
@@ -309,7 +329,7 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 				GameType:         pk.GameType,
 				EntityMetadata:   pk.EntityMetadata,
 				EntityProperties: pk.EntityProperties,
-				AbilityData:      pk.AbilityData,
+				AbilityData:      (&proto.AbilityData{}).FromLatest(pk.AbilityData),
 				EntityLinks:      links,
 				DeviceID:         pk.DeviceID,
 				BuildPlatform:    pk.BuildPlatform,
@@ -441,7 +461,15 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 			pk.GameVersion = p.ver
 			pk.BaseGameVersion = p.ver

+			items := make([]proto.LegacyItemRegistryEntry, len(conn.GameData().Items))
+			for i, it := range conn.GameData().Items {
+				items[i] = (&proto.LegacyItemRegistryEntry{}).FromLatest(it)
+			}
+
+			items = p.itemTranslator.DowngradeLegacyItemRegistry(items)
+
 			pks[pkIndex] = &legacypacket.StartGame{
+				Items:                          items,
 				EntityUniqueID:                 pk.EntityUniqueID,
 				EntityRuntimeID:                pk.EntityRuntimeID,
 				PlayerGameMode:                 pk.PlayerGameMode,
@@ -505,7 +533,6 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 				Time:                           pk.Time,
 				EnchantmentSeed:                pk.EnchantmentSeed,
 				Blocks:                         pk.Blocks,
-				Items:                          pk.Items,
 				MultiPlayerCorrelationID:       pk.MultiPlayerCorrelationID,
 				ServerAuthoritativeInventory:   pk.ServerAuthoritativeInventory,
 				GameVersion:                    pk.GameVersion,
@@ -527,6 +554,75 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 				Category:   pk.Category,
 				CodeStatus: pk.CodeStatus,
 			}
+		case *packet.ItemRegistry:
+			items := make([]proto.ItemEntry, len(pk.Items))
+			for i, it := range pk.Items {
+				items[i] = (&proto.ItemEntry{}).FromLatest(it)
+			}
+			pks[pkIndex] = &legacypacket.ItemRegistry{
+				Items: items,
+			}
+		case *packet.StructureBlockUpdate:
+			pks[pkIndex] = &legacypacket.StructureBlockUpdate{
+				Position:              pk.Position,
+				StructureName:         pk.StructureName,
+				FilteredStructureName: pk.FilteredStructureName,
+				DataField:             pk.DataField,
+				IncludePlayers:        pk.IncludePlayers,
+				ShowBoundingBox:       pk.ShowBoundingBox,
+				StructureBlockType:    pk.StructureBlockType,
+				Settings:              pk.Settings,
+				RedstoneSaveMode:      pk.RedstoneSaveMode,
+				ShouldTrigger:         pk.ShouldTrigger,
+				Waterlogged:           pk.Waterlogged,
+			}
+		case *packet.BossEvent:
+			pks[pkIndex] = &legacypacket.BossEvent{
+				BossEntityUniqueID:   pk.BossEntityUniqueID,
+				EventType:            pk.EventType,
+				PlayerUniqueID:       pk.PlayerUniqueID,
+				BossBarTitle:         pk.BossBarTitle,
+				FilteredBossBarTitle: pk.FilteredBossBarTitle,
+				HealthPercentage:     pk.HealthPercentage,
+				ScreenDarkening:      pk.ScreenDarkening,
+				Colour:               pk.Colour,
+				Overlay:              pk.Overlay,
+			}
+		case *packet.CameraAimAssistPresets:
+			pks[pkIndex] = &legacypacket.CameraAimAssistPresets{
+				CategoryGroups: pk.CategoryGroups,
+				Presets:        pk.Presets,
+				Operation:      pk.Operation,
+			}
+		case *packet.CommandBlockUpdate:
+			pks[pkIndex] = &legacypacket.CommandBlockUpdate{
+				Block:                   pk.Block,
+				Position:                pk.Position,
+				Mode:                    pk.Mode,
+				NeedsRedstone:           pk.NeedsRedstone,
+				Conditional:             pk.Conditional,
+				MinecartEntityRuntimeID: pk.MinecartEntityRuntimeID,
+				Command:                 pk.Command,
+				LastOutput:              pk.LastOutput,
+				Name:                    pk.Name,
+				FilteredName:            pk.FilteredName,
+				ShouldTrackOutput:       pk.ShouldTrackOutput,
+				TickDelay:               pk.TickDelay,
+				ExecuteOnFirstTick:      pk.ExecuteOnFirstTick,
+			}
+		case *packet.CreativeContent:
+			items := make([]proto.CreativeItem, len(pk.Items))
+			for i, it := range pk.Items {
+				items[i] = (&proto.CreativeItem{}).FromLatest(it)
+			}
+			pks[pkIndex] = &legacypacket.CreativeContent{
+				Groups: pk.Groups,
+				Items:  items,
+			}
+		case *packet.UpdateAbilities:
+			pks[pkIndex] = &legacypacket.UpdateAbilities{
+				AbilityData: (&proto.AbilityData{}).FromLatest(pk.AbilityData),
+			}
 		}
 	}

@@ -705,7 +801,7 @@ func (p *Protocol) upgradePackets(pks []packet.Packet, conn *minecraft.Conn) []p
 				GameType:         pk.GameType,
 				EntityMetadata:   pk.EntityMetadata,
 				EntityProperties: pk.EntityProperties,
-				AbilityData:      pk.AbilityData,
+				AbilityData:      pk.AbilityData.ToLatest(),
 				EntityLinks:      links,
 				DeviceID:         pk.DeviceID,
 				BuildPlatform:    pk.BuildPlatform,
@@ -897,7 +993,6 @@ func (p *Protocol) upgradePackets(pks []packet.Packet, conn *minecraft.Conn) []p
 				Time:                           pk.Time,
 				EnchantmentSeed:                pk.EnchantmentSeed,
 				Blocks:                         pk.Blocks,
-				Items:                          pk.Items,
 				MultiPlayerCorrelationID:       pk.MultiPlayerCorrelationID,
 				ServerAuthoritativeInventory:   pk.ServerAuthoritativeInventory,
 				GameVersion:                    pk.GameVersion,
@@ -919,6 +1014,65 @@ func (p *Protocol) upgradePackets(pks []packet.Packet, conn *minecraft.Conn) []p
 				Category:   pk.Category,
 				CodeStatus: pk.CodeStatus,
 			}
+		case *legacypacket.BossEvent:
+			pks[pkIndex] = &packet.BossEvent{
+				BossEntityUniqueID:   pk.BossEntityUniqueID,
+				EventType:            pk.EventType,
+				PlayerUniqueID:       pk.PlayerUniqueID,
+				BossBarTitle:         pk.BossBarTitle,
+				FilteredBossBarTitle: pk.FilteredBossBarTitle,
+				HealthPercentage:     pk.HealthPercentage,
+				ScreenDarkening:      pk.ScreenDarkening,
+				Colour:               pk.Colour,
+				Overlay:              pk.Overlay,
+			}
+		case *legacypacket.CommandBlockUpdate:
+			pks[pkIndex] = &packet.CommandBlockUpdate{
+				Block:                   pk.Block,
+				Position:                pk.Position,
+				Mode:                    pk.Mode,
+				NeedsRedstone:           pk.NeedsRedstone,
+				Conditional:             pk.Conditional,
+				MinecartEntityRuntimeID: pk.MinecartEntityRuntimeID,
+				Command:                 pk.Command,
+				LastOutput:              pk.LastOutput,
+				Name:                    pk.Name,
+				FilteredName:            pk.FilteredName,
+				ShouldTrackOutput:       pk.ShouldTrackOutput,
+				TickDelay:               pk.TickDelay,
+				ExecuteOnFirstTick:      pk.ExecuteOnFirstTick,
+			}
+		case *legacypacket.CreativeContent:
+			items := make([]protocol.CreativeItem, len(pk.Items))
+			for i, it := range pk.Items {
+				items[i] = it.ToLatest()
+			}
+			pks[pkIndex] = &packet.CreativeContent{
+				Groups: pk.Groups,
+				Items:  items,
+			}
+		case *legacypacket.ItemRegistry:
+			items := make([]protocol.ItemEntry, len(pk.Items))
+			for i, it := range pk.Items {
+				items[i] = it.ToLatest()
+			}
+			pks[pkIndex] = &packet.ItemRegistry{Items: items}
+		case *legacypacket.StructureBlockUpdate:
+			pks[pkIndex] = &packet.StructureBlockUpdate{
+				Position:              pk.Position,
+				StructureName:         pk.StructureName,
+				FilteredStructureName: pk.FilteredStructureName,
+				DataField:             pk.DataField,
+				IncludePlayers:        pk.IncludePlayers,
+				ShowBoundingBox:       pk.ShowBoundingBox,
+				StructureBlockType:    pk.StructureBlockType,
+				Settings:              pk.Settings,
+				RedstoneSaveMode:      pk.RedstoneSaveMode,
+				ShouldTrigger:         pk.ShouldTrigger,
+				Waterlogged:           pk.Waterlogged,
+			}
+		case *legacypacket.UpdateAbilities:
+			pks[pkIndex] = &packet.UpdateAbilities{AbilityData: pk.AbilityData.ToLatest()}
 		}
 	}
 	return pks
--- a/legacyver/v766.go
+++ b/legacyver/v766.go
@@ -2,12 +2,14 @@ package legacyver

 import (
 	_ "embed"
+	"github.com/akmalfairuz/legacy-version/internal/chunk"
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
 	"github.com/akmalfairuz/legacy-version/mapping"
 )

 const (
 	// ItemVersion766 ...
-	ItemVersion766 = 231
+	ItemVersion766 = 221
 	// BlockVersion766 ...
 	BlockVersion766 int32 = (1 << 24) | (21 << 16) | (50 << 8)
 )
@@ -20,6 +22,15 @@ var (
 	//go:embed data/block_states_766.nbt
 	blockStateData766 []byte

-	itemMappingLatest  = mapping.NewItemMapping(itemRuntimeIDData766, requiredItemList766, ItemVersion766, false)
-	blockMappingLatest = mapping.NewBlockMapping(blockStateData766)
+	itemMapping766  = mapping.NewItemMapping(itemRuntimeIDData766, requiredItemList766, ItemVersion766, false)
+	blockMapping766 = mapping.NewBlockMapping(blockStateData766)
 )
+
+func New766() *Protocol {
+	return &Protocol{
+		ver:             "1.21.50",
+		id:              proto.ID766,
+		blockTranslator: NewBlockTranslator(blockMapping766, latestBlockMapping, chunk.NewNetworkPersistentEncoding(blockMapping766, BlockVersion766), chunk.NewBlockPaletteEncoding(blockMapping766, BlockVersion766), false),
+		itemTranslator:  NewItemTranslator(itemMapping766, itemMappingLatest, blockMapping766, blockMappingLatest),
+	}
+}
--- a/legacyver/v776.go
+++ b/legacyver/v776.go
@@ -0,0 +1,25 @@
+package legacyver
+
+import (
+	_ "embed"
+	"github.com/akmalfairuz/legacy-version/mapping"
+)
+
+const (
+	// ItemVersion776 ...
+	ItemVersion776 = 241
+	// BlockVersion776 ...
+	BlockVersion776 int32 = (1 << 24) | (21 << 16) | (60 << 8)
+)
+
+var (
+	//go:embed data/item_runtime_ids_776.nbt
+	itemRuntimeIDData776 []byte
+	//go:embed data/required_item_list_776.json
+	requiredItemList776 []byte
+	//go:embed data/block_states_776.nbt
+	blockStateData776 []byte
+
+	itemMappingLatest  = mapping.NewItemMapping(itemRuntimeIDData776, requiredItemList776, ItemVersion776, false)
+	blockMappingLatest = mapping.NewBlockMapping(blockStateData776)
+)
--- a/mapping/item.go
+++ b/mapping/item.go
@@ -12,6 +12,7 @@ type Item interface {
 	// ItemNameToRuntimeID converts a string ID to an item runtime ID.
 	ItemNameToRuntimeID(string) (int32, bool)
 	RegisterEntry(string) int32
+	RegisterEntryRID(string, int32, uint8)
 	Air() int32
 	ItemVersion() uint16
 }
@@ -22,6 +23,8 @@ type DefaultItemMapping struct {
 	itemRuntimeIDsToNames map[int32]string
 	// itemNamesToRuntimeIDs holds a map to translate item string IDs to runtime IDs.
 	itemNamesToRuntimeIDs map[string]int32
+	// itemRuntimeIDToVersion holds a map to translate item runtime IDs to versions.
+	itemRuntimeIDToVersion map[int32]uint8
 	airRID                 int32
 	itemVersion            uint16
 }
@@ -29,6 +32,7 @@ type DefaultItemMapping struct {
 func NewItemMapping(itemRuntimeIDData []byte, requiredItemList []byte, itemVersion uint16, direct bool) *DefaultItemMapping {
 	itemRuntimeIDsToNames := make(map[int32]string)
 	itemNamesToRuntimeIDs := make(map[string]int32)
+	itemRuntimeIDToVersion := make(map[int32]uint8)
 	var airRID *int32

 	if direct {
@@ -48,6 +52,7 @@ func NewItemMapping(itemRuntimeIDData []byte, requiredItemList []byte, itemVersi
 		var m map[string]struct {
 			RuntimeID      int16  `json:"runtime_id"`
 			ComponentBased bool   `json:"component_based"`
+			Version        *uint8 `json:"version"`
 		}
 		if err := json.Unmarshal(requiredItemList, &m); err != nil {
 			panic(err)
@@ -60,6 +65,9 @@ func NewItemMapping(itemRuntimeIDData []byte, requiredItemList []byte, itemVersi

 			itemNamesToRuntimeIDs[name] = rid
 			itemRuntimeIDsToNames[rid] = name
+			if data.Version != nil {
+				itemRuntimeIDToVersion[rid] = *data.Version
+			}
 		}
 	}

@@ -67,7 +75,7 @@ func NewItemMapping(itemRuntimeIDData []byte, requiredItemList []byte, itemVersi
 		panic("couldn't find air")
 	}

-	return &DefaultItemMapping{itemRuntimeIDsToNames: itemRuntimeIDsToNames, itemNamesToRuntimeIDs: itemNamesToRuntimeIDs, itemVersion: itemVersion}
+	return &DefaultItemMapping{itemRuntimeIDsToNames: itemRuntimeIDsToNames, itemNamesToRuntimeIDs: itemNamesToRuntimeIDs, itemRuntimeIDToVersion: itemRuntimeIDToVersion, airRID: *airRID, itemVersion: itemVersion}
 }

 func (m *DefaultItemMapping) ItemRuntimeIDToName(runtimeID int32) (name string, found bool) {
@@ -84,6 +92,13 @@ func (m *DefaultItemMapping) ItemNameToRuntimeID(name string) (runtimeID int32,
 	return rid, ok
 }

+func (m *DefaultItemMapping) ItemRuntimeIDToVersion(runtimeID int32) (version uint8, found bool) {
+	defer m.mu.Unlock()
+	m.mu.Lock()
+	v, ok := m.itemRuntimeIDToVersion[runtimeID]
+	return v, ok
+}
+
 func (m *DefaultItemMapping) RegisterEntry(name string) int32 {
 	defer m.mu.Unlock()
 	m.mu.Lock()
@@ -96,6 +111,16 @@ func (m *DefaultItemMapping) RegisterEntry(name string) int32 {
 	return nextRID
 }

+func (m *DefaultItemMapping) RegisterEntryRID(name string, rid int32, version uint8) {
+	defer m.mu.Unlock()
+	m.mu.Lock()
+	if _, ok := m.itemNamesToRuntimeIDs[name]; !ok {
+		m.itemNamesToRuntimeIDs[name] = rid
+		m.itemRuntimeIDsToNames[rid] = name
+		m.itemRuntimeIDToVersion[rid] = version
+	}
+}
+
 func (m *DefaultItemMapping) Air() int32 {
 	defer m.mu.Unlock()
 	m.mu.Lock()