Add 1.21.30

README.md

@@ -0,0 +1,17 @@
+# legacy-version
+
+A gophertunnel protocol interface implementation to support older Minecraft Bedrock versions.
+
+## Supported Versions
+| Protocol ID | Version | Support |
+|-------------|---------|---------|
+| 766         | 1.21.50 | ✅       |
+| 748         | 1.21.40 | ✅       |
+| 729         | 1.21.30 | ✅       |
+| 712         | 1.21.20 | 🚧      |
+| 686         | 1.21.2  | 🚧      |
+| 685         | 1.21.0  | 🚧      |
+
+## Credits
+- [Flonja/multiversion](https://github.com/Flonja/multiversion)
+- [oomph-ac/new-mv](https://github.com/oomph-ac/new-mv)

legacyver/legacypacket/inventory_content.go

@@ -0,0 +1,43 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// InventoryContent is sent by the server to update the full content of a particular inventory. It is usually
+// sent for the main inventory of the player, but also works for other inventories that are currently opened
+// by the player.
+type InventoryContent struct {
+	// WindowID is the ID that identifies one of the windows that the client currently has opened, or one of
+	// the consistent windows such as the main inventory.
+	WindowID uint32
+	// Content is the new content of the inventory. The length of this slice must be equal to the full size of
+	// the inventory window updated.
+	Content []protocol.ItemInstance
+	// Container is the protocol.FullContainerName that describes the container that the content is for.
+	Container protocol.FullContainerName
+	// DynamicContainerSize ...
+	DynamicContainerSize uint32
+	// StorageItem is the item that is acting as the storage container for the inventory. If the inventory is
+	// not a dynamic container then this field should be left empty. When set, only the item type is used by
+	// the client and none of the other stack info.
+	StorageItem protocol.ItemInstance
+}
+
+// ID ...
+func (*InventoryContent) ID() uint32 {
+	return packet.IDInventoryContent
+}
+
+func (pk *InventoryContent) Marshal(io protocol.IO) {
+	io.Varuint32(&pk.WindowID)
+	protocol.FuncSlice(io, &pk.Content, io.ItemInstance)
+	protocol.Single(io, &pk.Container)
+	if proto.IsProtoGTE(io, proto.ID748) {
+		io.ItemInstance(&pk.StorageItem)
+	} else {
+		io.Varuint32(&pk.DynamicContainerSize)
+	}
+}

legacyver/legacypacket/inventory_slot.go

@@ -0,0 +1,47 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// InventorySlot is sent by the server to update a single slot in one of the inventory windows that the client
+// currently has opened. Usually this is the main inventory, but it may also be the off hand or, for example,
+// a chest inventory.
+type InventorySlot struct {
+	// WindowID is the ID of the window that the packet modifies. It must point to one of the windows that the
+	// client currently has opened.
+	WindowID uint32
+	// Slot is the index of the slot that the packet modifies. The new item will be set to the slot at this
+	// index.
+	Slot uint32
+	// Container is the protocol.FullContainerName that describes the container that the content is for.
+	Container protocol.FullContainerName
+	// DynamicContainerSize ...
+	DynamicContainerSize uint32
+	// StorageItem is the item that is acting as the storage container for the inventory. If the inventory is
+	// not a dynamic container then this field should be left empty. When set, only the item type is used by
+	// the client and none of the other stack info.
+	StorageItem protocol.ItemInstance
+	// NewItem is the item to be put in the slot at Slot. It will overwrite any item that may currently
+	// be present in that slot.
+	NewItem protocol.ItemInstance
+}
+
+// ID ...
+func (*InventorySlot) ID() uint32 {
+	return packet.IDInventorySlot
+}
+
+func (pk *InventorySlot) Marshal(io protocol.IO) {
+	io.Varuint32(&pk.WindowID)
+	io.Varuint32(&pk.Slot)
+	protocol.Single(io, &pk.Container)
+	if proto.IsProtoGTE(io, proto.ID748) {
+		io.ItemInstance(&pk.StorageItem)
+	} else {
+		io.Varuint32(&pk.DynamicContainerSize)
+	}
+	io.ItemInstance(&pk.NewItem)
+}

legacyver/legacypacket/mob_effect.go

@@ -0,0 +1,52 @@
+package legacypacket
+
+import (
+	"github.com/akmalfairuz/legacy-version/legacyver/proto"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// MobEffect is sent by the server to apply an effect to the player, for example an effect like poison. It may
+// also be used to modify existing effects, or removing them completely.
+type MobEffect 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
+	// Operation is the operation of the packet. It is either MobEffectAdd, MobEffectModify or MobEffectRemove
+	// and specifies the result of the packet client-side.
+	Operation byte
+	// EffectType is the ID of the effect to be added, removed or modified. It is one of the constants that
+	// may be found above.
+	EffectType int32
+	// Amplifier is the amplifier of the effect. Take note that the amplifier is not the same as the effect's
+	// level. The level is usually one higher than the amplifier, and the amplifier can actually be negative
+	// to reverse the behaviour effect.
+	Amplifier int32
+	// Particles specifies if viewers of the entity that gets the effect shows particles around it. If set to
+	// false, no particles are emitted around the entity.
+	Particles bool
+	// Duration is the duration of the effect in seconds. After the duration has elapsed, the effect will be
+	// removed automatically client-side.
+	Duration int32
+	// Tick is the server tick at which the packet was sent. It is used in relation to CorrectPlayerMovePrediction.
+	Tick uint64
+}
+
+// ID ...
+func (*MobEffect) ID() uint32 {
+	return packet.IDMobEffect
+}
+
+func (pk *MobEffect) Marshal(io protocol.IO) {
+	io.Varuint64(&pk.EntityRuntimeID)
+	io.Uint8(&pk.Operation)
+	io.Varint32(&pk.EffectType)
+	io.Varint32(&pk.Amplifier)
+	io.Bool(&pk.Particles)
+	io.Varint32(&pk.Duration)
+	if proto.IsProtoGTE(io, proto.ID748) {
+		io.Varuint64(&pk.Tick)
+	} else {
+		io.Uint64(&pk.Tick)
+	}
+}

legacyver/legacypacket/player_auth_input.go

@@ -83,8 +83,10 @@ func (pk *PlayerAuthInput) Marshal(io protocol.IO) {
 	io.Varuint32(&pk.InputMode)
 	io.Varuint32(&pk.PlayMode)
 	io.Varuint32(&pk.InteractionModel)
+	if proto.IsProtoGTE(io, proto.ID748) {
 		io.Float32(&pk.InteractPitch)
 		io.Float32(&pk.InteractYaw)
+	}
 	io.Varuint64(&pk.Tick)
 	io.Vec3(&pk.Delta)
 
@@ -106,7 +108,9 @@ func (pk *PlayerAuthInput) Marshal(io protocol.IO) {
 	}
 
 	io.Vec2(&pk.AnalogueMoveVector)
+	if proto.IsProtoGTE(io, proto.ID748) {
 		io.Vec3(&pk.CameraOrientation)
+	}
 
 	if proto.IsProtoGTE(io, proto.ID766) {
 		io.Vec2(&pk.RawMoveVector)

legacyver/legacypacket/resource_packs_info.go

@@ -31,6 +31,9 @@ type ResourcePacksInfo struct {
 	// The order of these texture packs is not relevant in this packet. It is however important in the
 	// ResourcePackStack packet.
 	TexturePacks []proto.TexturePackInfo
+
+	// PackURLs ...
+	PackURLs []protocol.PackURL
 }
 
 // ID ...
@@ -47,4 +50,9 @@ func (pk *ResourcePacksInfo) Marshal(io protocol.IO) {
 		io.String(&pk.WorldTemplateVersion)
 	}
 	protocol.SliceUint16Length(io, &pk.TexturePacks)
+	if proto.IsProtoLT(io, proto.ID748) {
+		protocol.Slice(io, &pk.PackURLs)
+	} else {
+		proto.EmptySlice(io, &pk.PackURLs)
+	}
 }

legacyver/proto/camera.go

@@ -112,9 +112,11 @@ func (x *CameraPreset) Marshal(r protocol.IO) {
 	protocol.OptionalFunc(r, &x.RotY, r.Float32)
 	protocol.OptionalFunc(r, &x.RotationSpeed, r.Float32)
 	protocol.OptionalFunc(r, &x.SnapToTarget, r.Bool)
+	if IsProtoGTE(r, ID748) {
 		protocol.OptionalFunc(r, &x.HorizontalRotationLimit, r.Vec2)
 		protocol.OptionalFunc(r, &x.VerticalRotationLimit, r.Vec2)
 		protocol.OptionalFunc(r, &x.ContinueTargeting, r.Bool)
+	}
 	if IsProtoGTE(r, ID766) {
 		protocol.OptionalFunc(r, &x.TrackingRadius, r.Float32)
 	}
@@ -123,7 +125,9 @@ func (x *CameraPreset) Marshal(r protocol.IO) {
 	protocol.OptionalFunc(r, &x.Radius, r.Float32)
 	protocol.OptionalFunc(r, &x.AudioListener, r.Uint8)
 	protocol.OptionalFunc(r, &x.PlayerEffects, r.Bool)
+	if IsProtoGTE(r, ID748) {
 		protocol.OptionalFunc(r, &x.AlignTargetAndCameraForward, r.Bool)
+	}
 	if IsProtoGTE(r, ID766) {
 		protocol.OptionalMarshaler(r, &x.AimAssist)
 	}

legacyver/proto/io.go

@@ -51,3 +51,9 @@ func IsWriter(w protocol.IO) bool {
 	_, ok := w.(*Writer)
 	return ok
 }
+
+func EmptySlice[T any](io protocol.IO, slice *[]T) {
+	if IsReader(io) {
+		*slice = make([]T, 0)
+	}
+}

legacyver/proto/resource_pack.go

@@ -75,5 +75,7 @@ func (x *TexturePackInfo) Marshal(r protocol.IO) {
 	r.Bool(&x.HasScripts)
 	r.Bool(&x.AddonPack)
 	r.Bool(&x.RTXEnabled)
+	if IsProtoGTE(r, ID748) {
 		r.String(&x.DownloadURL)
+	}
 }

legacyver/protocol.go

@@ -17,12 +17,32 @@ func init() {
 	packetPoolClient = packet.NewClientPool()
 	packetPoolServer = packet.NewServerPool()
 
-	packetPoolServer[packet.IDItemStackResponse] = func() packet.Packet { return &legacypacket.ItemStackResponse{} }
-	packetPoolServer[packet.IDResourcePacksInfo] = func() packet.Packet { return &legacypacket.ResourcePacksInfo{} }
-	packetPoolServer[packet.IDCameraPresets] = func() packet.Packet { return &legacypacket.CameraPresets{} }
+	for pkId, cur := range packetPoolClient {
+		packetPoolClient[pkId] = convertPacketFunc(pkId, cur)
+	}
+}
 
-	packetPoolClient[packet.IDPlayerAuthInput] = func() packet.Packet { return &legacypacket.PlayerAuthInput{} }
-	packetPoolClient[packet.IDCameraAimAssist] = func() packet.Packet { return &legacypacket.CameraAimAssist{} }
+func convertPacketFunc(pid uint32, cur func() packet.Packet) func() packet.Packet {
+	switch pid {
+	case packet.IDCameraAimAssist:
+		return func() packet.Packet { return &legacypacket.CameraAimAssist{} }
+	case packet.IDCameraPresets:
+		return func() packet.Packet { return &legacypacket.CameraPresets{} }
+	case packet.IDInventoryContent:
+		return func() packet.Packet { return &legacypacket.InventoryContent{} }
+	case packet.IDInventorySlot:
+		return func() packet.Packet { return &legacypacket.InventorySlot{} }
+	case packet.IDItemStackResponse:
+		return func() packet.Packet { return &legacypacket.ItemStackResponse{} }
+	case packet.IDMobEffect:
+		return func() packet.Packet { return &legacypacket.MobEffect{} }
+	case packet.IDPlayerAuthInput:
+		return func() packet.Packet { return &legacypacket.PlayerAuthInput{} }
+	case packet.IDResourcePacksInfo:
+		return func() packet.Packet { return &legacypacket.ResourcePacksInfo{} }
+	default:
+		return cur
+	}
 }
 
 type Protocol struct {
@@ -142,6 +162,7 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 			pks[pkIndex] = &legacypacket.ItemStackResponse{Responses: responses}
 		case *packet.ResourcePacksInfo:
 			texturePacks := make([]proto.TexturePackInfo, len(pk.TexturePacks))
+			packURLs := make([]protocol.PackURL, 0)
 			for i, t := range pk.TexturePacks {
 				texturePacks[i] = proto.TexturePackInfo{
 					UUID:            t.UUID,
@@ -155,6 +176,12 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 					RTXEnabled:      t.RTXEnabled,
 					DownloadURL:     t.DownloadURL,
 				}
+				if t.DownloadURL != "" {
+					packURLs = append(packURLs, protocol.PackURL{
+						UUIDVersion: t.UUID.String() + "_" + t.Version,
+						URL:         t.DownloadURL,
+					})
+				}
 			}
 			pks[pkIndex] = &legacypacket.ResourcePacksInfo{
 				TexturePackRequired:  pk.TexturePackRequired,
@@ -163,6 +190,7 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 				WorldTemplateUUID:    pk.WorldTemplateUUID,
 				WorldTemplateVersion: pk.WorldTemplateVersion,
 				TexturePacks:         texturePacks,
+				PackURLs:             packURLs,
 			}
 		}
 	}
@@ -220,6 +248,14 @@ func (p *Protocol) upgradePackets(pks []packet.Packet, conn *minecraft.Conn) []p
 			texturePacks := make([]protocol.TexturePackInfo, len(pk.TexturePacks))
 			for i, t := range pk.TexturePacks {
 				texturePacks[i] = t.ToLatest()
+				if texturePacks[i].DownloadURL == "" {
+					for _, u := range pk.PackURLs {
+						if u.UUIDVersion == t.UUID.String()+"_"+t.Version {
+							texturePacks[i].DownloadURL = u.URL
+							break
+						}
+					}
+				}
 			}
 			pks[pkIndex] = &packet.ResourcePacksInfo{
 				TexturePackRequired:  pk.TexturePackRequired,

legacyver/v729.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 (
+	// ItemVersion729 ...
+	ItemVersion729 = 211
+	// BlockVersion729 ...
+	BlockVersion729 int32 = (1 << 24) | (21 << 16) | (30 << 8)
+)
+
+var (
+	//go:embed data/item_runtime_ids_729.nbt
+	itemRuntimeIDData729 []byte
+	//go:embed data/required_item_list_729.json
+	requiredItemList729 []byte
+	//go:embed data/block_states_729.nbt
+	blockStateData729 []byte
+)
+
+func New729(direct bool) *Protocol {
+	itemMapping := mapping.NewItemMapping(itemRuntimeIDData729, requiredItemList729, ItemVersion729, false)
+	blockMapping := mapping.NewBlockMapping(blockStateData729)
+
+	return &Protocol{
+		ver:             "1.21.30",
+		id:              proto.ID729,
+		blockTranslator: NewBlockTranslator(blockMapping, latestBlockMapping, chunk.NewNetworkPersistentEncoding(blockMapping, BlockVersion729), chunk.NewBlockPaletteEncoding(blockMapping, BlockVersion729), false),
+		itemTranslator:  NewItemTranslator(itemMapping, itemMappingLatest, blockMapping, blockMappingLatest),
+	}
+}