Add 1.21.2 & 1.21.0 support

README.md

@@ -9,8 +9,16 @@ A gophertunnel protocol interface implementation to support older Minecraft Bedr
 | 748         | 1.21.40 | ✅       |
 | 729         | 1.21.30 | ✅       |
 | 712         | 1.21.20 | ✅       |
-| 686         | 1.21.2  | 🚧      |
-| 685         | 1.21.0  | 🚧      |
+| 686         | 1.21.2  | ✅       |
+| 685         | 1.21.0  | ✅       |
+| 671         | 1.20.80 | 🚧      |
+| 662         | 1.20.70 | 🚧      |
+| 649         | 1.20.60 | 🚧      |
+| 630         | 1.20.50 | 🚧      |
+| 622         | 1.20.40 | 🚧      |
+| 618         | 1.20.30 | 🚧      |
+| 594         | 1.20.10 | 🚧      |
+| 589         | 1.20.0  | 🚧      |
 
 ## Credits
 - [Flonja/multiversion](https://github.com/Flonja/multiversion)

legacyver/legacypacket/add_actor.go

@@ -0,0 +1,76 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/go-gl/mathgl/mgl32"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// AddActor is sent by the server to the client to spawn an entity to the player. It is used for every entity
+// except other players, for which the AddPlayer packet is used.
+type AddActor struct {
+	// EntityUniqueID is the unique ID of the entity. The unique ID is a value that remains consistent across
+	// different sessions of the same world, but most servers simply fill the runtime ID of the entity out for
+	// this field.
+	EntityUniqueID int64
+	// EntityRuntimeID is the runtime ID of the entity. The runtime ID is unique for each world session, and
+	// entities are generally identified in packets using this runtime ID.
+	EntityRuntimeID uint64
+	// EntityType is the string entity type of the entity, for example 'minecraft:skeleton'. A list of these
+	// entities may be found online.
+	EntityType string
+	// Position is the position to spawn the entity on. If the entity is on a distance that the player cannot
+	// see it, the entity will still show up if the player moves closer.
+	Position mgl32.Vec3
+	// Velocity is the initial velocity the entity spawns with. This velocity will initiate client side
+	// movement of the entity.
+	Velocity mgl32.Vec3
+	// Pitch is the vertical rotation of the entity. Facing straight forward yields a pitch of 0. Pitch is
+	// measured in degrees.
+	Pitch float32
+	// Yaw is the horizontal rotation of the entity. Yaw is also measured in degrees.
+	Yaw float32
+	// HeadYaw is the same as Yaw, except that it applies specifically to the head of the entity. A different value for
+	// HeadYaw than Yaw means that the entity will have its head turned.
+	HeadYaw float32
+	// BodyYaw is the same as Yaw, except that it applies specifically to the body of the entity. A different value for
+	// BodyYaw than HeadYaw means that the entity will have its body turned, although it is unclear what the difference
+	// between BodyYaw and Yaw is.
+	BodyYaw float32
+	// Attributes is a slice of attributes that the entity has. It includes attributes such as its health,
+	// movement speed, etc.
+	Attributes []protocol.AttributeValue
+	// EntityMetadata is a map of entity metadata, which includes flags and data properties that alter in
+	// particular the way the entity looks. Flags include ones such as 'on fire' and 'sprinting'.
+	// The metadata values are indexed by their property key.
+	EntityMetadata map[uint32]any
+	// EntityProperties is a list of properties that the entity inhibits. These properties define and alter specific
+	// attributes of the entity.
+	EntityProperties protocol.EntityProperties
+	// EntityLinks is a list of entity links that are currently active on the entity. These links alter the
+	// way the entity 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 entity is riding another entity.
+	EntityLinks []proto.EntityLink
+}
+
+// ID ...
+func (*AddActor) ID() uint32 {
+	return packet.IDAddActor
+}
+
+func (pk *AddActor) Marshal(io protocol.IO) {
+	io.Varint64(&pk.EntityUniqueID)
+	io.Varuint64(&pk.EntityRuntimeID)
+	io.String(&pk.EntityType)
+	io.Vec3(&pk.Position)
+	io.Vec3(&pk.Velocity)
+	io.Float32(&pk.Pitch)
+	io.Float32(&pk.Yaw)
+	io.Float32(&pk.HeadYaw)
+	io.Float32(&pk.BodyYaw)
+	protocol.Slice(io, &pk.Attributes)
+	io.EntityMetadata(&pk.EntityMetadata)
+	protocol.Single(io, &pk.EntityProperties)
+	protocol.Slice(io, &pk.EntityLinks)
+}

legacyver/legacypacket/add_player.go

@@ -0,0 +1,92 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/go-gl/mathgl/mgl32"
+	"github.com/google/uuid"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// AddPlayer is sent by the server to the client to make a player entity show up client-side. It is one of the
+// few entities that cannot be sent using the AddActor packet.
+type AddPlayer struct {
+	// UUID is the UUID of the player. It is the same UUID that the client sent in the Login packet at the
+	// start of the session. A player with this UUID must exist in the player list (built up using the
+	// PlayerList packet), for it to show up in-game.
+	UUID uuid.UUID
+	// Username is the name of the player. This username is the username that will be set as the initial
+	// name tag of the player.
+	Username string
+	// EntityRuntimeID is the runtime ID of the player. The runtime ID is unique for each world session, and
+	// entities are generally identified in packets using this runtime ID.
+	EntityRuntimeID uint64
+	// PlatformChatID is an identifier only set for particular platforms when chatting (presumably only for
+	// Nintendo Switch). It is otherwise an empty string, and is used to decide which players are able to
+	// chat with each other.
+	PlatformChatID string
+	// Position is the position to spawn the player on. If the player is on a distance that the viewer cannot
+	// see it, the player will still show up if the viewer moves closer.
+	Position mgl32.Vec3
+	// Velocity is the initial velocity the player spawns with. This velocity will initiate client side
+	// movement of the player.
+	Velocity mgl32.Vec3
+	// Pitch is the vertical rotation of the player. Facing straight forward yields a pitch of 0. Pitch is
+	// measured in degrees.
+	Pitch float32
+	// Yaw is the horizontal rotation of the player. Yaw is also measured in degrees.
+	Yaw float32
+	// HeadYaw is the same as Yaw, except that it applies specifically to the head of the player. A different
+	// value for HeadYaw than Yaw means that the player will have its head turned.
+	HeadYaw float32
+	// HeldItem is the item that the player is holding. The item is shown to the viewer as soon as the player
+	// itself shows up. Needless to say that this field is rather pointless, as additional packets still must
+	// be sent for armour to show up.
+	HeldItem protocol.ItemInstance
+	// GameType is the game type of the player. If set to GameTypeSpectator, the player will not be shown to viewers.
+	GameType int32
+	// EntityMetadata is a map of entity metadata, which includes flags and data properties that alter in
+	// particular the way the player looks. Flags include ones such as 'on fire' and 'sprinting'.
+	// The metadata values are indexed by their property key.
+	EntityMetadata map[uint32]any
+	// EntityProperties is a list of properties that the entity inhibits. These properties define and alter specific
+	// 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
+	// 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.
+	EntityLinks []proto.EntityLink
+	// DeviceID is the device ID set in one of the files found in the storage of the device of the player. It
+	// may be changed freely, so it should not be relied on for anything.
+	DeviceID string
+	// BuildPlatform is the build platform/device OS of the player that is about to be added, as it sent in
+	// the Login packet when joining.
+	BuildPlatform int32
+}
+
+// ID ...
+func (*AddPlayer) ID() uint32 {
+	return packet.IDAddPlayer
+}
+
+func (pk *AddPlayer) Marshal(io protocol.IO) {
+	io.UUID(&pk.UUID)
+	io.String(&pk.Username)
+	io.Varuint64(&pk.EntityRuntimeID)
+	io.String(&pk.PlatformChatID)
+	io.Vec3(&pk.Position)
+	io.Vec3(&pk.Velocity)
+	io.Float32(&pk.Pitch)
+	io.Float32(&pk.Yaw)
+	io.Float32(&pk.HeadYaw)
+	io.ItemInstance(&pk.HeldItem)
+	io.Varint32(&pk.GameType)
+	io.EntityMetadata(&pk.EntityMetadata)
+	protocol.Single(io, &pk.EntityProperties)
+	protocol.Single(io, &pk.AbilityData)
+	protocol.Slice(io, &pk.EntityLinks)
+	io.String(&pk.DeviceID)
+	io.Int32(&pk.BuildPlatform)
+}

legacyver/legacypacket/camera_instruction.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"
+)
+
+// CameraInstruction gives a custom camera specific instructions to operate.
+type CameraInstruction struct {
+	// Set is a camera instruction that sets the camera to a specified preset.
+	Set protocol.Optional[protocol.CameraInstructionSet]
+	// Clear can be set to true to clear all the current camera instructions.
+	Clear protocol.Optional[bool]
+	// Fade is a camera instruction that fades the screen to a specified colour.
+	Fade protocol.Optional[protocol.CameraInstructionFade]
+	// Target is a camera instruction that targets a specific entity.
+	Target protocol.Optional[protocol.CameraInstructionTarget]
+	// RemoveTarget can be set to true to remove the current aim assist target.
+	RemoveTarget protocol.Optional[bool]
+}
+
+// ID ...
+func (*CameraInstruction) ID() uint32 {
+	return packet.IDCameraInstruction
+}
+
+func (pk *CameraInstruction) Marshal(io protocol.IO) {
+	protocol.OptionalMarshaler(io, &pk.Set)
+	protocol.OptionalFunc(io, &pk.Clear, io.Bool)
+	protocol.OptionalMarshaler(io, &pk.Fade)
+	if proto.IsProtoGTE(io, proto.ID712) {
+		protocol.OptionalMarshaler(io, &pk.Target)
+		protocol.OptionalFunc(io, &pk.RemoveTarget, io.Bool)
+	}
+}

legacyver/legacypacket/change_dimension.go

@@ -0,0 +1,46 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/go-gl/mathgl/mgl32"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// ChangeDimension is sent by the server to the client to send a dimension change screen client-side. Once the
+// screen is cleared client-side, the client will send a PlayerAction packet with
+// PlayerActionDimensionChangeDone.
+type ChangeDimension struct {
+	// Dimension is the dimension that the client should be changed to. The fog colour will change depending
+	// on the type of dimension, which is one of the constants above.
+	// Note that Dimension MUST be a different dimension than the one that the player is currently in. Sending
+	// a ChangeDimension packet with a Dimension that the player is currently in will result in a never-ending
+	// dimension change screen.
+	Dimension int32
+	// Position is the position in the new dimension that the player is spawned in.
+	Position mgl32.Vec3
+	// Respawn specifies if the dimension change was respawn based, meaning that the player died in one
+	// dimension and got respawned into another. The client will send a PlayerAction packet with
+	// PlayerActionDimensionChangeRequest if it dies in another dimension, indicating that it needs a
+	// DimensionChange packet with Respawn set to true.
+	Respawn bool
+	// LoadingScreenID is a unique ID for the loading screen that the player is currently in. The client will
+	// update the server on its state through the ServerBoundLoadingScreen packet, and it can be used to not
+	// send specific packets to the client if it is changing dimensions. This field should be unique for every
+	//ChangeDimension packet sent.
+	LoadingScreenID protocol.Optional[uint32]
+}
+
+// ID ...
+func (*ChangeDimension) ID() uint32 {
+	return packet.IDChangeDimension
+}
+
+func (pk *ChangeDimension) Marshal(io protocol.IO) {
+	io.Varint32(&pk.Dimension)
+	io.Vec3(&pk.Position)
+	io.Bool(&pk.Respawn)
+	if proto.IsProtoGTE(io, proto.ID712) {
+		protocol.OptionalFunc(io, &pk.LoadingScreenID, io.Uint32)
+	}
+}

legacyver/legacypacket/correct_player_move_prediction.go

@@ -0,0 +1,50 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/go-gl/mathgl/mgl32"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// CorrectPlayerMovePrediction is sent by the server if and only if StartGame.ServerAuthoritativeMovementMode
+// is set to AuthoritativeMovementModeServerWithRewind. The packet is used to correct movement at a specific
+// point in time.
+type CorrectPlayerMovePrediction struct {
+	// PredictionType is the type of prediction that was corrected. It is one of the constants above.
+	PredictionType byte
+	// Position is the position that the player is supposed to be at the tick written in the field below.
+	// The client will change its current position based on movement after that tick starting from the
+	// Position.
+	Position mgl32.Vec3
+	// Delta is the change in position compared to what the client sent as its position at that specific tick.
+	Delta mgl32.Vec3
+	// Rotation is the rotation of the player at the tick written in the field below. It is only included if
+	// PredictionType is PredictionTypeVehicle.
+	Rotation mgl32.Vec2
+	// VehicleAngularVelocity is the angular velocity of the vehicle that the rider is riding.
+	VehicleAngularVelocity protocol.Optional[float32]
+	// OnGround specifies if the player was on the ground at the time of the tick below.
+	OnGround bool
+	// Tick is the tick of the movement which was corrected by this packet.
+	Tick uint64
+}
+
+// ID ...
+func (*CorrectPlayerMovePrediction) ID() uint32 {
+	return packet.IDCorrectPlayerMovePrediction
+}
+
+func (pk *CorrectPlayerMovePrediction) Marshal(io protocol.IO) {
+	io.Uint8(&pk.PredictionType)
+	io.Vec3(&pk.Position)
+	io.Vec3(&pk.Delta)
+	if pk.PredictionType == packet.PredictionTypeVehicle {
+		io.Vec2(&pk.Rotation)
+		if proto.IsProtoGTE(io, proto.ID712) {
+			protocol.OptionalFunc(io, &pk.VehicleAngularVelocity, io.Float32)
+		}
+	}
+	io.Bool(&pk.OnGround)
+	io.Varuint64(&pk.Tick)
+}

legacyver/legacypacket/disconnect.go

@@ -0,0 +1,40 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// Disconnect may be sent by the server to disconnect the client using an optional message to send as the
+// disconnect screen.
+type Disconnect struct {
+	// Reason is the reason for the disconnection. It seems as if this field has no use other than for
+	// telemetry reasons as it does not affect the message that gets displayed on the disconnect screen.
+	Reason int32
+	// HideDisconnectionScreen specifies if the disconnection screen should be hidden when the client is
+	// disconnected, meaning it will be sent directly to the main menu.
+	HideDisconnectionScreen bool
+	// Message is an optional message to show when disconnected. This message is only written if the
+	// HideDisconnectionScreen field is set to true.
+	Message string
+	// FilteredMessage is a filtered version of Message with all the profanity removed. The client will use
+	// this over Message if this field is not empty and they have the "Filter Profanity" setting enabled.
+	FilteredMessage string
+}
+
+// ID ...
+func (*Disconnect) ID() uint32 {
+	return packet.IDDisconnect
+}
+
+func (pk *Disconnect) Marshal(io protocol.IO) {
+	io.Varint32(&pk.Reason)
+	io.Bool(&pk.HideDisconnectionScreen)
+	if !pk.HideDisconnectionScreen {
+		io.String(&pk.Message)
+		if proto.IsProtoGTE(io, proto.ID712) {
+			io.String(&pk.FilteredMessage)
+		}
+	}
+}

legacyver/legacypacket/editor_network.go

@@ -0,0 +1,29 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/nbt"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// EditorNetwork is a packet sent from the server to the client and vise-versa to communicate editor-mode related
+// information. It carries a single compound tag containing the relevant information.
+type EditorNetwork struct {
+	// RouteToManager ...
+	RouteToManager bool
+	// Payload is a network little endian compound tag holding data relevant to the editor.
+	Payload map[string]any
+}
+
+// ID ...
+func (*EditorNetwork) ID() uint32 {
+	return packet.IDEditorNetwork
+}
+
+func (pk *EditorNetwork) Marshal(io protocol.IO) {
+	if proto.IsProtoGTE(io, proto.ID712) {
+		io.Bool(&pk.RouteToManager)
+	}
+	io.NBT(&pk.Payload, nbt.NetworkLittleEndian)
+}

legacyver/legacypacket/inventory_content.go

@@ -40,6 +40,8 @@ func (pk *InventoryContent) Marshal(io protocol.IO) {
 	if proto.IsProtoGTE(io, proto.ID748) {
 		io.ItemInstance(&pk.StorageItem)
 	} else {
-		io.Varuint32(&pk.DynamicContainerSize)
+		if proto.IsProtoGTE(io, proto.ID712) {
+			io.Varuint32(&pk.DynamicContainerSize)
+		}
 	}
 }

legacyver/legacypacket/inventory_slot.go

@@ -43,7 +43,9 @@ func (pk *InventorySlot) Marshal(io protocol.IO) {
 	if proto.IsProtoGTE(io, proto.ID748) {
 		io.ItemInstance(&pk.StorageItem)
 	} else {
-		io.Varuint32(&pk.DynamicContainerSize)
+		if proto.IsProtoGTE(io, proto.ID712) {
+			io.Varuint32(&pk.DynamicContainerSize)
+		}
 	}
 	io.ItemInstance(&pk.NewItem)
 }

legacyver/legacypacket/inventory_transaction.go

@@ -0,0 +1,50 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// InventoryTransaction is a packet sent by the client. It essentially exists out of multiple sub-packets,
+// each of which have something to do with the inventory in one way or another. Some of these sub-packets
+// directly relate to the inventory, others relate to interaction with the world, that could potentially
+// result in a change in the inventory.
+type InventoryTransaction struct {
+	// LegacyRequestID is an ID that is only non-zero at times when sent by the client. The server should
+	// always send 0 for this. When this field is not 0, the LegacySetItemSlots slice below will have values
+	// in it.
+	// LegacyRequestID ties in with the ItemStackResponse packet. If this field is non-0, the server should
+	// respond with an ItemStackResponse packet. Some inventory actions such as dropping an item out of the
+	// hotbar are still one using this packet, and the ItemStackResponse packet needs to tie in with it.
+	LegacyRequestID int32
+	// LegacySetItemSlots are only present if the LegacyRequestID is non-zero. These item slots inform the
+	// server of the slots that were changed during the inventory transaction, and the server should send
+	// back an ItemStackResponse packet with these slots present in it. (Or false with no slots, if rejected.)
+	LegacySetItemSlots []protocol.LegacySetItemSlot
+	// Actions is a list of actions that took place, that form the inventory transaction together. Each of
+	// these actions hold one slot in which one item was changed to another. In general, the combination of
+	// all of these actions results in a balanced inventory transaction. This should be checked to ensure that
+	// no items are cheated into the inventory.
+	Actions []protocol.InventoryAction
+	// TransactionData is a data object that holds data specific to the type of transaction that the
+	// TransactionPacket held. Its concrete type must be one of NormalTransactionData, MismatchTransactionData
+	// UseItemTransactionData, UseItemOnEntityTransactionData or ReleaseItemTransactionData. If nil is set,
+	// the transaction will be assumed to of type InventoryTransactionTypeNormal.
+	TransactionData proto.InventoryTransactionData
+}
+
+// ID ...
+func (*InventoryTransaction) ID() uint32 {
+	return packet.IDInventoryTransaction
+}
+
+func (pk *InventoryTransaction) Marshal(io protocol.IO) {
+	io.Varint32(&pk.LegacyRequestID)
+	if pk.LegacyRequestID != 0 {
+		protocol.Slice(io, &pk.LegacySetItemSlots)
+	}
+	proto.TransactionDataType(io, &pk.TransactionData)
+	protocol.Slice(io, &pk.Actions)
+	pk.TransactionData.Marshal(io)
+}

legacyver/legacypacket/mob_armour_equipment.go

@@ -0,0 +1,44 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// MobArmourEquipment is sent by the server to the client to update the armour an entity is wearing. It is
+// sent for both players and other entities, such as zombies.
+type MobArmourEquipment struct {
+	// EntityRuntimeID is the runtime ID of the entity. The runtime ID is unique for each world session, and
+	// entities are generally identified in packets using this runtime ID.
+	EntityRuntimeID uint64
+	// Helmet is the equipped helmet of the entity. Items that are not wearable on the head will not be
+	// rendered by the client. Unlike in Java Edition, blocks cannot be worn.
+	Helmet protocol.ItemInstance
+	// Chestplate is the chestplate of the entity. Items that are not wearable as chestplate will not be
+	// rendered.
+	Chestplate protocol.ItemInstance
+	// Leggings is the item worn as leggings by the entity. Items not wearable as leggings will not be
+	// rendered client-side.
+	Leggings protocol.ItemInstance
+	// Boots is the item worn as boots by the entity. Items not wearable as boots will not be rendered.
+	Boots protocol.ItemInstance
+	// Body is the item worn on the body of the entity. Items not wearable on the body will not be rendered.
+	Body protocol.ItemInstance
+}
+
+// ID ...
+func (*MobArmourEquipment) ID() uint32 {
+	return packet.IDMobArmourEquipment
+}
+
+func (pk *MobArmourEquipment) Marshal(io protocol.IO) {
+	io.Varuint64(&pk.EntityRuntimeID)
+	io.ItemInstance(&pk.Helmet)
+	io.ItemInstance(&pk.Chestplate)
+	io.ItemInstance(&pk.Leggings)
+	io.ItemInstance(&pk.Boots)
+	if proto.IsProtoGTE(io, proto.ID712) {
+		io.ItemInstance(&pk.Body)
+	}
+}

legacyver/legacypacket/player_armour_damage.go

@@ -0,0 +1,63 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// PlayerArmourDamage is sent by the server to damage the armour of a player. It is a very efficient packet,
+// but generally it's much easier to just send a slot update for the damaged armour.
+type PlayerArmourDamage struct {
+	// Bitset holds a bitset of 4 bits that indicate which pieces of armour need to have damage dealt to them.
+	// The first bit, when toggled, is for a helmet, the second for the chestplate, the third for the leggings
+	// and the fourth for boots.
+	Bitset uint8
+	// HelmetDamage is the amount of damage that should be dealt to the helmet.
+	HelmetDamage int32
+	// ChestplateDamage is the amount of damage that should be dealt to the chestplate.
+	ChestplateDamage int32
+	// LeggingsDamage is the amount of damage that should be dealt to the leggings.
+	LeggingsDamage int32
+	// BootsDamage is the amount of damage that should be dealt to the boots.
+	BootsDamage int32
+	// BodyDamage is the amount of damage that should be dealt to the body.
+	BodyDamage int32
+}
+
+// ID ...
+func (pk *PlayerArmourDamage) ID() uint32 {
+	return packet.IDPlayerArmourDamage
+}
+
+func (pk *PlayerArmourDamage) Marshal(io protocol.IO) {
+	io.Uint8(&pk.Bitset)
+	if pk.Bitset&packet.PlayerArmourDamageFlagHelmet != 0 {
+		io.Varint32(&pk.HelmetDamage)
+	} else {
+		pk.HelmetDamage = 0
+	}
+	if pk.Bitset&packet.PlayerArmourDamageFlagChestplate != 0 {
+		io.Varint32(&pk.ChestplateDamage)
+	} else {
+		pk.ChestplateDamage = 0
+	}
+	if pk.Bitset&packet.PlayerArmourDamageFlagLeggings != 0 {
+		io.Varint32(&pk.LeggingsDamage)
+	} else {
+		pk.LeggingsDamage = 0
+	}
+	if pk.Bitset&packet.PlayerArmourDamageFlagBoots != 0 {
+		io.Varint32(&pk.BootsDamage)
+	} else {
+		pk.BootsDamage = 0
+	}
+
+	if proto.IsProtoGTE(io, proto.ID712) {
+		if pk.Bitset&packet.PlayerArmourDamageFlagBody != 0 {
+			io.Varint32(&pk.BodyDamage)
+		} else {
+			pk.BodyDamage = 0
+		}
+	}
+}

legacyver/legacypacket/player_auth_input.go

@@ -91,7 +91,7 @@ func (pk *PlayerAuthInput) Marshal(io protocol.IO) {
 	io.Vec3(&pk.Delta)
 
 	if pk.InputData.Load(packet.InputFlagPerformItemInteraction) {
-		io.PlayerInventoryAction(&pk.ItemInteractionData)
+		proto.PlayerInventoryAction(io, &pk.ItemInteractionData)
 	}
 
 	if pk.InputData.Load(packet.InputFlagPerformItemStackRequest) {

legacyver/legacypacket/set_actor_link.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"
+)
+
+// SetActorLink is sent by the server to initiate an entity link client-side, meaning one entity will start
+// riding another.
+type SetActorLink struct {
+	// EntityLink is the link to be set client-side. It links two entities together, so that one entity rides
+	// another. Note that players that see those entities later will not see the link, unless it is also sent
+	// in the AddActor and AddPlayer packets.
+	EntityLink proto.EntityLink
+}
+
+// ID ...
+func (*SetActorLink) ID() uint32 {
+	return packet.IDSetActorLink
+}
+
+func (pk *SetActorLink) Marshal(io protocol.IO) {
+	protocol.Single(io, &pk.EntityLink)
+}

legacyver/legacypacket/set_title.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"
+)
+
+// SetTitle is sent by the server to make a title, subtitle or action bar shown to a player. It has several
+// fields that allow setting the duration of the titles.
+type SetTitle struct {
+	// ActionType is the type of the action that should be executed upon the title of a player. It is one of
+	// the constants above and specifies the response of the client to the packet.
+	ActionType int32
+	// Text is the text of the title, which has a different meaning depending on the ActionType that the
+	// packet has. The text is the text of a title, subtitle or action bar, depending on the type set.
+	Text string
+	// FadeInDuration is the duration that the title takes to fade in on the screen of the player. It is
+	// measured in 20ths of a second (AKA in ticks).
+	FadeInDuration int32
+	// RemainDuration is the duration that the title remains on the screen of the player. It is measured in
+	// 20ths of a second (AKA in ticks).
+	RemainDuration int32
+	// FadeOutDuration is the duration that the title takes to fade out of the screen of the player. It is
+	// measured in 20ths of a second (AKA in ticks).
+	FadeOutDuration int32
+	// XUID is the XBOX Live user ID of the player, which will remain consistent as long as the player is
+	// logged in with the XBOX Live account. It is empty if the user is not logged into its XBL account.
+	XUID string
+	// PlatformOnlineID is either a uint64 or an empty string.
+	PlatformOnlineID string
+	// FilteredMessage is a filtered version of Message with all the profanity removed. The client will use
+	// this over Message if this field is not empty and they have the "Filter Profanity" setting enabled.
+	FilteredMessage string
+}
+
+// ID ...
+func (*SetTitle) ID() uint32 {
+	return packet.IDSetTitle
+}
+
+func (pk *SetTitle) Marshal(io protocol.IO) {
+	io.Varint32(&pk.ActionType)
+	io.String(&pk.Text)
+	io.Varint32(&pk.FadeInDuration)
+	io.Varint32(&pk.RemainDuration)
+	io.Varint32(&pk.FadeOutDuration)
+	io.String(&pk.XUID)
+	io.String(&pk.PlatformOnlineID)
+	if proto.IsProtoGTE(io, proto.ID712) {
+		io.String(&pk.FilteredMessage)
+	}
+}

legacyver/legacypacket/stop_sound.go

@@ -0,0 +1,33 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// StopSound is sent by the server to stop a sound playing to the player, such as a playing music disk track
+// or other long-lasting sounds.
+type StopSound struct {
+	// SoundName is the name of the sound that should be stopped from playing. If no sound with this name is
+	// currently active, the packet is ignored.
+	SoundName string
+	// StopAll specifies if all sounds currently playing to the player should be stopped. If set to true, the
+	// SoundName field may be left empty.
+	StopAll bool
+	// StopMusicLegacy is currently unknown.
+	StopMusicLegacy bool
+}
+
+// ID ...
+func (*StopSound) ID() uint32 {
+	return packet.IDStopSound
+}
+
+func (pk *StopSound) Marshal(io protocol.IO) {
+	io.String(&pk.SoundName)
+	io.Bool(&pk.StopAll)
+	if proto.IsProtoGTE(io, proto.ID712) {
+		io.Bool(&pk.StopMusicLegacy)
+	}
+}

legacyver/proto/entity_link.go

@@ -0,0 +1,56 @@
+package proto
+
+import "github.com/sandertv/gophertunnel/minecraft/protocol"
+
+// EntityLink is a link between two entities, typically being one entity riding another.
+type EntityLink struct {
+	// RiddenEntityUniqueID is the entity unique ID of the entity that is being ridden. For a player sitting
+	// in a boat, this is the unique ID of the boat.
+	RiddenEntityUniqueID int64
+	// RiderEntityUniqueID is the entity unique ID of the entity that is riding. For a player sitting in a
+	// boat, this is the unique ID of the player.
+	RiderEntityUniqueID int64
+	// Type is one of the types above. It specifies the way the entity is linked to another entity.
+	Type byte
+	// Immediate is set to immediately dismount an entity from another. This should be set when the mount of
+	// an entity is killed.
+	Immediate bool
+	// RiderInitiated specifies if the link was created by the rider, for example the player starting to ride
+	// a horse by itself. This is generally true in vanilla environment for players.
+	RiderInitiated bool
+	// VehicleAngularVelocity is the angular velocity of the vehicle that the rider is riding.
+	VehicleAngularVelocity float32
+}
+
+func (x *EntityLink) FromLatest(link protocol.EntityLink) EntityLink {
+	x.RiddenEntityUniqueID = link.RiddenEntityUniqueID
+	x.RiderEntityUniqueID = link.RiderEntityUniqueID
+	x.Type = link.Type
+	x.Immediate = link.Immediate
+	x.RiderInitiated = link.RiderInitiated
+	x.VehicleAngularVelocity = link.VehicleAngularVelocity
+	return *x
+}
+
+func (x *EntityLink) ToLatest() protocol.EntityLink {
+	return protocol.EntityLink{
+		RiddenEntityUniqueID:   x.RiddenEntityUniqueID,
+		RiderEntityUniqueID:    x.RiderEntityUniqueID,
+		Type:                   x.Type,
+		Immediate:              x.Immediate,
+		RiderInitiated:         x.RiderInitiated,
+		VehicleAngularVelocity: x.VehicleAngularVelocity,
+	}
+}
+
+// Marshal encodes/decodes a single entity link.
+func (x *EntityLink) Marshal(r protocol.IO) {
+	r.Varint64(&x.RiddenEntityUniqueID)
+	r.Varint64(&x.RiderEntityUniqueID)
+	r.Uint8(&x.Type)
+	r.Bool(&x.Immediate)
+	r.Bool(&x.RiderInitiated)
+	if IsProtoGTE(r, ID712) {
+		r.Float32(&x.VehicleAngularVelocity)
+	}
+}

legacyver/proto/inventory.go

@@ -0,0 +1,158 @@
+package proto
+
+import (
+	"github.com/go-gl/mathgl/mgl32"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+)
+
+// InventoryTransactionData represents an object that holds data specific to an inventory transaction type.
+// The data it holds depends on the type.
+type InventoryTransactionData interface {
+	// Marshal encodes/decodes a serialised inventory transaction data object.
+	Marshal(r protocol.IO)
+}
+
+// lookupTransactionData looks up inventory transaction data for the ID passed.
+func lookupTransactionData(id uint32, x *InventoryTransactionData) bool {
+	switch id {
+	case protocol.InventoryTransactionTypeNormal:
+		*x = &protocol.NormalTransactionData{}
+	case protocol.InventoryTransactionTypeMismatch:
+		*x = &protocol.MismatchTransactionData{}
+	case protocol.InventoryTransactionTypeUseItem:
+		*x = &UseItemTransactionData{}
+	case protocol.InventoryTransactionTypeUseItemOnEntity:
+		*x = &protocol.UseItemOnEntityTransactionData{}
+	case protocol.InventoryTransactionTypeReleaseItem:
+		*x = &protocol.ReleaseItemTransactionData{}
+	default:
+		return false
+	}
+	return true
+}
+
+// lookupTransactionDataType looks up an ID for a specific transaction data.
+func lookupTransactionDataType(x InventoryTransactionData, id *uint32) bool {
+	switch x.(type) {
+	case *protocol.NormalTransactionData:
+		*id = protocol.InventoryTransactionTypeNormal
+	case *protocol.MismatchTransactionData:
+		*id = protocol.InventoryTransactionTypeMismatch
+	case *UseItemTransactionData:
+		*id = protocol.InventoryTransactionTypeUseItem
+	case *protocol.UseItemOnEntityTransactionData:
+		*id = protocol.InventoryTransactionTypeUseItemOnEntity
+	case *protocol.ReleaseItemTransactionData:
+		*id = protocol.InventoryTransactionTypeReleaseItem
+	default:
+		return false
+	}
+	return true
+}
+
+// UseItemTransactionData represents an inventory transaction data object sent when the client uses an item on
+// a block.
+type UseItemTransactionData struct {
+	// LegacyRequestID is an ID that is only non-zero at times when sent by the client. The server should
+	// always send 0 for this. When this field is not 0, the LegacySetItemSlots slice below will have values
+	// in it.
+	// LegacyRequestID ties in with the ItemStackResponse packet. If this field is non-0, the server should
+	// respond with an ItemStackResponse packet. Some inventory actions such as dropping an item out of the
+	// hotbar are still one using this packet, and the ItemStackResponse packet needs to tie in with it.
+	LegacyRequestID int32
+	// LegacySetItemSlots are only present if the LegacyRequestID is non-zero. These item slots inform the
+	// server of the slots that were changed during the inventory transaction, and the server should send
+	// back an ItemStackResponse packet with these slots present in it. (Or false with no slots, if rejected.)
+	LegacySetItemSlots []protocol.LegacySetItemSlot
+	// Actions is a list of actions that took place, that form the inventory transaction together. Each of
+	// these actions hold one slot in which one item was changed to another. In general, the combination of
+	// all of these actions results in a balanced inventory transaction. This should be checked to ensure that
+	// no items are cheated into the inventory.
+	Actions []protocol.InventoryAction
+	// ActionType is the type of the UseItem inventory transaction. It is one of the action types found above,
+	// and specifies the way the player interacted with the block.
+	ActionType uint32
+	// TriggerType is the type of the trigger that caused the inventory transaction. It is one of the trigger
+	// types found in the constants above. If TriggerType is TriggerTypePlayerInput, the transaction is from
+	// the initial input of the player. If it is TriggerTypeSimulationTick, the transaction is from a simulation
+	// tick when the player is holding down the input.
+	TriggerType uint32
+	// BlockPosition is the position of the block that was interacted with. This is only really a correct
+	// block position if ActionType is not UseItemActionClickAir.
+	BlockPosition protocol.BlockPos
+	// BlockFace is the face of the block that was interacted with. When clicking the block, it is the face
+	// clicked. When breaking the block, it is the face that was last being hit until the block broke.
+	BlockFace int32
+	// HotBarSlot is the hot bar slot that the player was holding while clicking the block. It should be used
+	// to ensure that the hot bar slot and held item are correctly synchronised with the server.
+	HotBarSlot int32
+	// HeldItem is the item that was held to interact with the block. The server should check if this item
+	// is actually present in the HotBarSlot.
+	HeldItem protocol.ItemInstance
+	// Position is the position of the player at the time of interaction. For clicking a block, this is the
+	// position at that time, whereas for breaking the block it is the position at the time of breaking.
+	Position mgl32.Vec3
+	// ClickedPosition is the position that was clicked relative to the block's base coordinate. It can be
+	// used to find out exactly where a player clicked the block.
+	ClickedPosition mgl32.Vec3
+	// BlockRuntimeID is the runtime ID of the block that was clicked. It may be used by the server to verify
+	// that the player's world client-side is synchronised with the server's.
+	BlockRuntimeID uint32
+	// ClientPrediction is the client's prediction on the output of the transaction. It is one of the client
+	// prediction found in the constants above.
+	ClientPrediction uint32
+}
+
+func (x *UseItemTransactionData) FromLatest(l *protocol.UseItemTransactionData) *UseItemTransactionData {
+	return &UseItemTransactionData{
+		LegacyRequestID:    l.LegacyRequestID,
+		LegacySetItemSlots: l.LegacySetItemSlots,
+		Actions:            l.Actions,
+		ActionType:         l.ActionType,
+		TriggerType:        l.TriggerType,
+		BlockPosition:      l.BlockPosition,
+		BlockFace:          l.BlockFace,
+		HotBarSlot:         l.HotBarSlot,
+		HeldItem:           l.HeldItem,
+		Position:           l.Position,
+		ClickedPosition:    l.ClickedPosition,
+		BlockRuntimeID:     l.BlockRuntimeID,
+		ClientPrediction:   l.ClientPrediction,
+	}
+}
+
+func (x *UseItemTransactionData) ToLatest() *protocol.UseItemTransactionData {
+	return &protocol.UseItemTransactionData{
+		LegacyRequestID:    x.LegacyRequestID,
+		LegacySetItemSlots: x.LegacySetItemSlots,
+		Actions:            x.Actions,
+		ActionType:         x.ActionType,
+		TriggerType:        x.TriggerType,
+		BlockPosition:      x.BlockPosition,
+		BlockFace:          x.BlockFace,
+		HotBarSlot:         x.HotBarSlot,
+		HeldItem:           x.HeldItem,
+		Position:           x.Position,
+		ClickedPosition:    x.ClickedPosition,
+		BlockRuntimeID:     x.BlockRuntimeID,
+		ClientPrediction:   x.ClientPrediction,
+	}
+}
+
+// Marshal ...
+func (x *UseItemTransactionData) Marshal(r protocol.IO) {
+	r.Varuint32(&x.ActionType)
+	if IsProtoGTE(r, ID712) {
+		r.Varuint32(&x.TriggerType)
+	}
+	r.UBlockPos(&x.BlockPosition)
+	r.Varint32(&x.BlockFace)
+	r.Varint32(&x.HotBarSlot)
+	r.ItemInstance(&x.HeldItem)
+	r.Vec3(&x.Position)
+	r.Vec3(&x.ClickedPosition)
+	r.Varuint32(&x.BlockRuntimeID)
+	if IsProtoGTE(r, ID712) {
+		r.Varuint32(&x.ClientPrediction)
+	}
+}

legacyver/proto/io.go

@@ -1,6 +1,7 @@
 package proto
 
 import (
+	"fmt"
 	"github.com/sandertv/gophertunnel/minecraft/protocol"
 )
 
@@ -57,3 +58,41 @@ func EmptySlice[T any](io protocol.IO, slice *[]T) {
 		*slice = make([]T, 0)
 	}
 }
+
+func TransactionDataType(io protocol.IO, x *InventoryTransactionData) {
+	if IsReader(io) {
+		var transactionType uint32
+		io.Varuint32(&transactionType)
+		if !lookupTransactionData(transactionType, x) {
+			io.UnknownEnumOption(transactionType, "inventory transaction data type")
+		}
+	} else {
+		var id uint32
+		if !lookupTransactionDataType(*x, &id) {
+			io.UnknownEnumOption(fmt.Sprintf("%T", x), "inventory transaction data type")
+		}
+		io.Varuint32(&id)
+	}
+}
+
+func PlayerInventoryAction(io protocol.IO, x *protocol.UseItemTransactionData) {
+	io.Varint32(&x.LegacyRequestID)
+	if x.LegacyRequestID < -1 && (x.LegacyRequestID&1) == 0 {
+		protocol.Slice(io, &x.LegacySetItemSlots)
+	}
+	protocol.Slice(io, &x.Actions)
+	io.Varuint32(&x.ActionType)
+	if IsProtoGTE(io, ID712) {
+		io.Varuint32(&x.TriggerType)
+	}
+	io.BlockPos(&x.BlockPosition)
+	io.Varint32(&x.BlockFace)
+	io.Varint32(&x.HotBarSlot)
+	io.ItemInstance(&x.HeldItem)
+	io.Vec3(&x.Position)
+	io.Vec3(&x.ClickedPosition)
+	io.Varuint32(&x.BlockRuntimeID)
+	if IsProtoGTE(io, ID712) {
+		io.Varuint32(&x.ClientPrediction)
+	}
+}

legacyver/proto/item_stack.go

@@ -538,7 +538,9 @@ type CraftRecipeStackRequestAction struct {
 // Marshal ...
 func (a *CraftRecipeStackRequestAction) Marshal(r protocol.IO) {
 	r.Varuint32(&a.RecipeNetworkID)
-	r.Uint8(&a.NumberOfCrafts)
+	if IsProtoGTE(r, ID712) {
+		r.Uint8(&a.NumberOfCrafts)
+	}
 }
 
 // AutoCraftRecipeStackRequestAction is sent by the client similarly to the CraftRecipeStackRequestAction. The

legacyver/proto/resource_pack.go

@@ -87,7 +87,9 @@ func (x *TexturePackInfo) Marshal(r protocol.IO) {
 	r.String(&x.SubPackName)
 	r.String(&x.ContentIdentity)
 	r.Bool(&x.HasScripts)
-	r.Bool(&x.AddonPack)
+	if IsProtoGTE(r, ID712) {
+		r.Bool(&x.AddonPack)
+	}
 	r.Bool(&x.RTXEnabled)
 	if IsProtoGTE(r, ID748) {
 		r.String(&x.DownloadURL)

legacyver/protocol.go

@@ -233,6 +233,137 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 				Port:        pk.Port,
 				ReloadWorld: pk.ReloadWorld,
 			}
+		case *packet.AddActor:
+			links := make([]proto.EntityLink, len(pk.EntityLinks))
+			for i, l := range pk.EntityLinks {
+				links[i] = (&proto.EntityLink{}).FromLatest(l)
+			}
+			pks[pkIndex] = &legacypacket.AddActor{
+				EntityUniqueID:   pk.EntityUniqueID,
+				EntityRuntimeID:  pk.EntityRuntimeID,
+				EntityType:       pk.EntityType,
+				Position:         pk.Position,
+				Velocity:         pk.Velocity,
+				Pitch:            pk.Pitch,
+				Yaw:              pk.Yaw,
+				HeadYaw:          pk.HeadYaw,
+				BodyYaw:          pk.BodyYaw,
+				Attributes:       pk.Attributes,
+				EntityMetadata:   pk.EntityMetadata,
+				EntityProperties: pk.EntityProperties,
+				EntityLinks:      links,
+			}
+		case *packet.AddPlayer:
+			links := make([]proto.EntityLink, len(pk.EntityLinks))
+			for i, l := range pk.EntityLinks {
+				links[i] = (&proto.EntityLink{}).FromLatest(l)
+			}
+			pks[pkIndex] = &legacypacket.AddPlayer{
+				UUID:             pk.UUID,
+				Username:         pk.Username,
+				EntityRuntimeID:  pk.EntityRuntimeID,
+				PlatformChatID:   pk.PlatformChatID,
+				Position:         pk.Position,
+				Velocity:         pk.Velocity,
+				Pitch:            pk.Pitch,
+				Yaw:              pk.Yaw,
+				HeadYaw:          pk.HeadYaw,
+				HeldItem:         pk.HeldItem,
+				GameType:         pk.GameType,
+				EntityMetadata:   pk.EntityMetadata,
+				EntityProperties: pk.EntityProperties,
+				AbilityData:      pk.AbilityData,
+				EntityLinks:      links,
+				DeviceID:         pk.DeviceID,
+				BuildPlatform:    pk.BuildPlatform,
+			}
+		case *packet.SetActorLink:
+			pks[pkIndex] = &legacypacket.SetActorLink{
+				EntityLink: (&proto.EntityLink{}).FromLatest(pk.EntityLink),
+			}
+		case *packet.CameraInstruction:
+			pks[pkIndex] = &legacypacket.CameraInstruction{
+				Set:          pk.Set,
+				Clear:        pk.Clear,
+				Fade:         pk.Fade,
+				Target:       pk.Target,
+				RemoveTarget: pk.RemoveTarget,
+			}
+		case *packet.ChangeDimension:
+			pks[pkIndex] = &legacypacket.ChangeDimension{
+				Dimension:       pk.Dimension,
+				Position:        pk.Position,
+				Respawn:         pk.Respawn,
+				LoadingScreenID: pk.LoadingScreenID,
+			}
+		case *packet.CorrectPlayerMovePrediction:
+			pks[pkIndex] = &legacypacket.CorrectPlayerMovePrediction{
+				PredictionType:         pk.PredictionType,
+				Position:               pk.Position,
+				Delta:                  pk.Delta,
+				Rotation:               pk.Rotation,
+				VehicleAngularVelocity: pk.VehicleAngularVelocity,
+				OnGround:               pk.OnGround,
+				Tick:                   pk.Tick,
+			}
+		case *packet.Disconnect:
+			pks[pkIndex] = &legacypacket.Disconnect{
+				Reason:                  pk.Reason,
+				HideDisconnectionScreen: pk.HideDisconnectionScreen,
+				Message:                 pk.Message,
+				FilteredMessage:         pk.FilteredMessage,
+			}
+		case *packet.EditorNetwork:
+			pks[pkIndex] = &legacypacket.EditorNetwork{
+				RouteToManager: pk.RouteToManager,
+				Payload:        pk.Payload,
+			}
+		case *packet.MobArmourEquipment:
+			pks[pkIndex] = &legacypacket.MobArmourEquipment{
+				EntityRuntimeID: pk.EntityRuntimeID,
+				Helmet:          pk.Helmet,
+				Chestplate:      pk.Chestplate,
+				Leggings:        pk.Leggings,
+				Boots:           pk.Boots,
+				Body:            pk.Body,
+			}
+		case *packet.PlayerArmourDamage:
+			pks[pkIndex] = &legacypacket.PlayerArmourDamage{
+				Bitset:           pk.Bitset,
+				HelmetDamage:     pk.HelmetDamage,
+				ChestplateDamage: pk.ChestplateDamage,
+				LeggingsDamage:   pk.LeggingsDamage,
+				BootsDamage:      pk.BootsDamage,
+				BodyDamage:       pk.BodyDamage,
+			}
+		case *packet.SetTitle:
+			pks[pkIndex] = &legacypacket.SetTitle{
+				ActionType:       pk.ActionType,
+				Text:             pk.Text,
+				FadeInDuration:   pk.FadeInDuration,
+				RemainDuration:   pk.RemainDuration,
+				FadeOutDuration:  pk.FadeOutDuration,
+				XUID:             pk.XUID,
+				PlatformOnlineID: pk.PlatformOnlineID,
+				FilteredMessage:  pk.FilteredMessage,
+			}
+		case *packet.StopSound:
+			pks[pkIndex] = &legacypacket.StopSound{
+				SoundName:       pk.SoundName,
+				StopAll:         pk.StopAll,
+				StopMusicLegacy: pk.StopMusicLegacy,
+			}
+		case *packet.InventoryTransaction:
+			trData := pk.TransactionData
+			if x, ok := trData.(*protocol.UseItemTransactionData); ok {
+				trData = (&proto.UseItemTransactionData{}).FromLatest(x)
+			}
+			pks[pkIndex] = &legacypacket.InventoryTransaction{
+				LegacyRequestID:    pk.LegacyRequestID,
+				LegacySetItemSlots: pk.LegacySetItemSlots,
+				Actions:            pk.Actions,
+				TransactionData:    trData,
+			}
 		}
 	}
 
@@ -372,6 +503,137 @@ func (p *Protocol) upgradePackets(pks []packet.Packet, conn *minecraft.Conn) []p
 				Port:        pk.Port,
 				ReloadWorld: pk.ReloadWorld,
 			}
+		case *legacypacket.AddActor:
+			links := make([]protocol.EntityLink, len(pk.EntityLinks))
+			for i, l := range pk.EntityLinks {
+				links[i] = l.ToLatest()
+			}
+			pks[pkIndex] = &packet.AddActor{
+				EntityUniqueID:   pk.EntityUniqueID,
+				EntityRuntimeID:  pk.EntityRuntimeID,
+				EntityType:       pk.EntityType,
+				Position:         pk.Position,
+				Velocity:         pk.Velocity,
+				Pitch:            pk.Pitch,
+				Yaw:              pk.Yaw,
+				HeadYaw:          pk.HeadYaw,
+				BodyYaw:          pk.BodyYaw,
+				Attributes:       pk.Attributes,
+				EntityMetadata:   pk.EntityMetadata,
+				EntityProperties: pk.EntityProperties,
+				EntityLinks:      links,
+			}
+		case *legacypacket.AddPlayer:
+			links := make([]protocol.EntityLink, len(pk.EntityLinks))
+			for i, l := range pk.EntityLinks {
+				links[i] = l.ToLatest()
+			}
+			pks[pkIndex] = &packet.AddPlayer{
+				UUID:             pk.UUID,
+				Username:         pk.Username,
+				EntityRuntimeID:  pk.EntityRuntimeID,
+				PlatformChatID:   pk.PlatformChatID,
+				Position:         pk.Position,
+				Velocity:         pk.Velocity,
+				Pitch:            pk.Pitch,
+				Yaw:              pk.Yaw,
+				HeadYaw:          pk.HeadYaw,
+				HeldItem:         pk.HeldItem,
+				GameType:         pk.GameType,
+				EntityMetadata:   pk.EntityMetadata,
+				EntityProperties: pk.EntityProperties,
+				AbilityData:      pk.AbilityData,
+				EntityLinks:      links,
+				DeviceID:         pk.DeviceID,
+				BuildPlatform:    pk.BuildPlatform,
+			}
+		case *legacypacket.SetActorLink:
+			pks[pkIndex] = &packet.SetActorLink{
+				EntityLink: pk.EntityLink.ToLatest(),
+			}
+		case *legacypacket.CameraInstruction:
+			pks[pkIndex] = &packet.CameraInstruction{
+				Set:          pk.Set,
+				Clear:        pk.Clear,
+				Fade:         pk.Fade,
+				Target:       pk.Target,
+				RemoveTarget: pk.RemoveTarget,
+			}
+		case *legacypacket.ChangeDimension:
+			pks[pkIndex] = &packet.ChangeDimension{
+				Dimension:       pk.Dimension,
+				Position:        pk.Position,
+				Respawn:         pk.Respawn,
+				LoadingScreenID: pk.LoadingScreenID,
+			}
+		case *legacypacket.CorrectPlayerMovePrediction:
+			pks[pkIndex] = &packet.CorrectPlayerMovePrediction{
+				PredictionType:         pk.PredictionType,
+				Position:               pk.Position,
+				Delta:                  pk.Delta,
+				Rotation:               pk.Rotation,
+				VehicleAngularVelocity: pk.VehicleAngularVelocity,
+				OnGround:               pk.OnGround,
+				Tick:                   pk.Tick,
+			}
+		case *legacypacket.Disconnect:
+			pks[pkIndex] = &packet.Disconnect{
+				Reason:                  pk.Reason,
+				HideDisconnectionScreen: pk.HideDisconnectionScreen,
+				Message:                 pk.Message,
+				FilteredMessage:         pk.FilteredMessage,
+			}
+		case *legacypacket.EditorNetwork:
+			pks[pkIndex] = &packet.EditorNetwork{
+				RouteToManager: pk.RouteToManager,
+				Payload:        pk.Payload,
+			}
+		case *legacypacket.MobArmourEquipment:
+			pks[pkIndex] = &packet.MobArmourEquipment{
+				EntityRuntimeID: pk.EntityRuntimeID,
+				Helmet:          pk.Helmet,
+				Chestplate:      pk.Chestplate,
+				Leggings:        pk.Leggings,
+				Boots:           pk.Boots,
+				Body:            pk.Body,
+			}
+		case *legacypacket.PlayerArmourDamage:
+			pks[pkIndex] = &packet.PlayerArmourDamage{
+				Bitset:           pk.Bitset,
+				HelmetDamage:     pk.HelmetDamage,
+				ChestplateDamage: pk.ChestplateDamage,
+				LeggingsDamage:   pk.LeggingsDamage,
+				BootsDamage:      pk.BootsDamage,
+				BodyDamage:       pk.BodyDamage,
+			}
+		case *legacypacket.SetTitle:
+			pks[pkIndex] = &packet.SetTitle{
+				ActionType:       pk.ActionType,
+				Text:             pk.Text,
+				FadeInDuration:   pk.FadeInDuration,
+				RemainDuration:   pk.RemainDuration,
+				FadeOutDuration:  pk.FadeOutDuration,
+				XUID:             pk.XUID,
+				PlatformOnlineID: pk.PlatformOnlineID,
+				FilteredMessage:  pk.FilteredMessage,
+			}
+		case *legacypacket.StopSound:
+			pks[pkIndex] = &packet.StopSound{
+				SoundName:       pk.SoundName,
+				StopAll:         pk.StopAll,
+				StopMusicLegacy: pk.StopMusicLegacy,
+			}
+		case *legacypacket.InventoryTransaction:
+			trData := pk.TransactionData
+			if x, ok := trData.(*proto.UseItemTransactionData); ok {
+				trData = x.ToLatest()
+			}
+			pks[pkIndex] = &packet.InventoryTransaction{
+				LegacyRequestID:    pk.LegacyRequestID,
+				LegacySetItemSlots: pk.LegacySetItemSlots,
+				Actions:            pk.Actions,
+				TransactionData:    trData,
+			}
 		}
 	}
 	return pks

legacyver/v685.go

@@ -0,0 +1,28 @@
+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 (
+	// ItemVersion685 ...
+	ItemVersion685 = 191
+	// BlockVersion685 ...
+	BlockVersion685 int32 = (1 << 24) | (21 << 16) | (0 << 8)
+)
+
+// New685 uses same data as 686
+func New685(direct bool) *Protocol {
+	itemMapping := mapping.NewItemMapping(itemRuntimeIDData686, requiredItemList686, ItemVersion685, false)
+	blockMapping := mapping.NewBlockMapping(blockStateData686)
+
+	return &Protocol{
+		ver:             "1.21.0",
+		id:              proto.ID685,
+		blockTranslator: NewBlockTranslator(blockMapping, latestBlockMapping, chunk.NewNetworkPersistentEncoding(blockMapping, BlockVersion685), chunk.NewBlockPaletteEncoding(blockMapping, BlockVersion685), false),
+		itemTranslator:  NewItemTranslator(itemMapping, itemMappingLatest, blockMapping, blockMappingLatest),
+	}
+}

legacyver/v686.go

@@ -0,0 +1,36 @@
+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 (
+	// ItemVersion686 ...
+	ItemVersion686 = 191
+	// BlockVersion686 ...
+	BlockVersion686 int32 = (1 << 24) | (21 << 16) | (2 << 8)
+)
+
+var (
+	//go:embed data/item_runtime_ids_686.nbt
+	itemRuntimeIDData686 []byte
+	//go:embed data/required_item_list_686.json
+	requiredItemList686 []byte
+	//go:embed data/block_states_686.nbt
+	blockStateData686 []byte
+)
+
+func New686(direct bool) *Protocol {
+	itemMapping := mapping.NewItemMapping(itemRuntimeIDData686, requiredItemList686, ItemVersion686, false)
+	blockMapping := mapping.NewBlockMapping(blockStateData686)
+
+	return &Protocol{
+		ver:             "1.21.2",
+		id:              proto.ID686,
+		blockTranslator: NewBlockTranslator(blockMapping, latestBlockMapping, chunk.NewNetworkPersistentEncoding(blockMapping, BlockVersion686), chunk.NewBlockPaletteEncoding(blockMapping, BlockVersion686), false),
+		itemTranslator:  NewItemTranslator(itemMapping, itemMappingLatest, blockMapping, blockMappingLatest),
+	}
+}

main.go

@@ -29,6 +29,10 @@ func main() {
 		StatusProvider: p,
 		AcceptedProtocols: []minecraft.Protocol{
 			legacyver.New748(false),
+			legacyver.New729(false),
+			legacyver.New712(false),
+			legacyver.New686(false),
+			legacyver.New685(false),
 		},
 	}.Listen("raknet", config.Connection.LocalAddress)
 	if err != nil {