Add playerinfo recorder for chat message

bot/msg/chat.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/Tnze/go-mc/bot"
 	"github.com/Tnze/go-mc/bot/basic"
+	"github.com/Tnze/go-mc/bot/playerlist"
 	"github.com/Tnze/go-mc/chat"
 	"github.com/Tnze/go-mc/chat/sign"
 	"github.com/Tnze/go-mc/data/packetid"
@@ -20,12 +21,12 @@ type Manager struct {
 	p *basic.Player
 }
 
-func New(c *bot.Client, p *basic.Player, events EventsHandler) *Manager {
+func New(c *bot.Client, p *basic.Player, pl *playerlist.PlayerList, events EventsHandler) *Manager {
-	attachPlayerMsg(c, p, events.PlayerChatMessage)
+	attachPlayerMsg(c, p, pl, events.PlayerChatMessage)
 	return &Manager{c, p}
 }
 
-func attachPlayerMsg(c *bot.Client, p *basic.Player, handler func(msg chat.Message) error) {
+func attachPlayerMsg(c *bot.Client, p *basic.Player, _ *playerlist.PlayerList, handler func(msg chat.Message) error) {
 	c.Events.AddListener(
 		bot.PacketHandler{
 			Priority: 64, ID: packetid.ClientboundPlayerChat,
@@ -85,3 +86,5 @@ func (m *Manager) SendMessage(msg string) error {
 	))
 	return err
 }
+
+var InvalidChatPacket = errors.New("invalid chat packet")

bot/playerlist/playerlist.go

@@ -0,0 +1,137 @@
+package playerlist
+
+import (
+	"bytes"
+	"errors"
+
+	"github.com/google/uuid"
+
+	"github.com/Tnze/go-mc/bot"
+	"github.com/Tnze/go-mc/chat"
+	"github.com/Tnze/go-mc/data/packetid"
+	pk "github.com/Tnze/go-mc/net/packet"
+	"github.com/Tnze/go-mc/yggdrasil/user"
+)
+
+type PlayerList struct {
+	PlayerInfos map[uuid.UUID]*PlayerInfo
+}
+
+func New(c *bot.Client) *PlayerList {
+	pl := PlayerList{
+		PlayerInfos: make(map[uuid.UUID]*PlayerInfo),
+	}
+	c.Events.AddListener(
+		bot.PacketHandler{
+			Priority: 64, ID: packetid.ClientboundPlayerInfoUpdate,
+			F: pl.handlePlayerInfoUpdatePacket,
+		},
+		bot.PacketHandler{
+			Priority: 64, ID: packetid.ClientboundPlayerInfoRemove,
+			F: pl.handlePlayerInfoRemovePacket,
+		},
+	)
+	return &pl
+}
+
+func (pl *PlayerList) handlePlayerInfoUpdatePacket(p pk.Packet) error {
+	r := bytes.NewReader(p.Data)
+
+	action := pk.NewFixedBitSet(6)
+	if _, err := action.ReadFrom(r); err != nil {
+		return err
+	}
+
+	var length pk.VarInt
+	if _, err := length.ReadFrom(r); err != nil {
+		return err
+	}
+
+	for i := 0; i < int(length); i++ {
+		var id pk.UUID
+		if _, err := id.ReadFrom(r); err != nil {
+			return err
+		}
+
+		player, ok := pl.PlayerInfos[uuid.UUID(id)]
+		if !ok { // create new player info if not exist
+			player = new(PlayerInfo)
+			pl.PlayerInfos[uuid.UUID(id)] = player
+		}
+
+		// add player
+		if action.Get(0) {
+			var name pk.String
+			var properties []user.Property
+			if _, err := (pk.Tuple{&name, pk.Array(&properties)}).ReadFrom(r); err != nil {
+				return err
+			}
+			player.GameProfile = GameProfile{
+				ID:         uuid.UUID(id),
+				Name:       string(name),
+				Properties: properties,
+			}
+		}
+		// initialize chat
+		if action.Get(1) {
+			return errors.New("unsupported initialize chat yet")
+		}
+		// update gamemode
+		if action.Get(2) {
+			var gamemode pk.VarInt
+			if _, err := gamemode.ReadFrom(r); err != nil {
+				return err
+			}
+			player.Gamemode = int32(gamemode)
+		}
+		// update listed
+		if action.Get(3) {
+			var listed pk.Boolean
+			if _, err := listed.ReadFrom(r); err != nil {
+				return err
+			}
+			player.Listed = bool(listed)
+		}
+		// update latency
+		if action.Get(4) {
+			var latency pk.VarInt
+			if _, err := latency.ReadFrom(r); err != nil {
+				return err
+			}
+			player.Latency = int32(latency)
+		}
+		// display name
+		if action.Get(5) {
+			var displayName pk.Option[chat.Message, *chat.Message]
+			if _, err := displayName.ReadFrom(r); err != nil {
+				return err
+			}
+			if displayName.Has {
+				player.DisplayName = &displayName.Val
+			} else {
+				player.DisplayName = nil
+			}
+		}
+	}
+
+	return nil
+}
+
+func (pl *PlayerList) handlePlayerInfoRemovePacket(p pk.Packet) error {
+	return nil
+}
+
+type PlayerInfo struct {
+	GameProfile
+	// chatSession
+	Gamemode    int32
+	Latency     int32
+	Listed      bool
+	DisplayName *chat.Message
+}
+
+type GameProfile struct {
+	ID         uuid.UUID
+	Name       string
+	Properties []user.Property
+}

examples/autofish/autofish.go

@@ -8,7 +8,6 @@ import (
 
 	"github.com/Tnze/go-mc/bot"
 	"github.com/Tnze/go-mc/bot/basic"
-	"github.com/Tnze/go-mc/bot/msg"
 	"github.com/Tnze/go-mc/chat"
 	_ "github.com/Tnze/go-mc/data/lang/en-us"
 	"github.com/Tnze/go-mc/data/packetid"
@@ -20,7 +19,6 @@ const timeout = 45
 var (
 	c *bot.Client
 	p *basic.Player
-	bc *msg.Manager
 
 	watch chan time.Time
 )
@@ -34,7 +32,6 @@ func main() {
 		Disconnect: onDisconnect,
 		Death:      onDeath,
 	})
-	bc = msg.New(c, p, msg.EventsHandler{PlayerChatMessage: onChatMsg})
 
 	// Register event handlers
 

examples/daze/daze.go

@@ -13,6 +13,7 @@ import (
 	"github.com/Tnze/go-mc/bot"
 	"github.com/Tnze/go-mc/bot/basic"
 	"github.com/Tnze/go-mc/bot/msg"
+	"github.com/Tnze/go-mc/bot/playerlist"
 	"github.com/Tnze/go-mc/bot/screen"
 	"github.com/Tnze/go-mc/bot/world"
 	"github.com/Tnze/go-mc/chat"
@@ -31,6 +32,7 @@ var (
 var (
 	client        *bot.Client
 	player        *basic.Player
+	playerList    *playerlist.PlayerList
 	chatHandler   *msg.Manager
 	worldManager  *world.World
 	screenManager *screen.Manager
@@ -52,7 +54,8 @@ func main() {
 		HealthChange: onHealthChange,
 		Death:        onDeath,
 	})
-	chatHandler = msg.New(client, player, msg.EventsHandler{
+	playerList = playerlist.New(client)
+	chatHandler = msg.New(client, player, playerList, msg.EventsHandler{
 		PlayerChatMessage: onPlayerMsg,
 	})
 	worldManager = world.NewWorld(client, player, world.EventsListener{

server/auth/auth.go

@@ -15,11 +15,13 @@ import (
 	"net/http"
 	"strings"
 
+	"github.com/google/uuid"
+
 	"github.com/Tnze/go-mc/data/packetid"
 	"github.com/Tnze/go-mc/net"
 	"github.com/Tnze/go-mc/net/CFB8"
 	pk "github.com/Tnze/go-mc/net/packet"
-	"github.com/google/uuid"
+	"github.com/Tnze/go-mc/yggdrasil/user"
 )
 
 const verifyTokenLen = 16
@@ -171,42 +173,20 @@ func twosComplement(p []byte) []byte {
 	return p
 }
 
+type (
+	Texture  = user.Texture
+	Property = user.Property
+)
+
 // Resp is the response of authentication
 type Resp struct {
 	Name       string
 	ID         uuid.UUID
-	Properties []Property
+	Properties []user.Property
-}
-
-type Property struct {
-	Name, Value, Signature string
-}
-
-func (p Property) WriteTo(w io.Writer) (n int64, err error) {
-	return pk.Tuple{
-		pk.String(p.Name),
-		pk.String(p.Value),
-		pk.Option[pk.String, *pk.String]{
-			Has: p.Signature != "",
-			Val: pk.String(p.Signature),
-		},
-	}.WriteTo(w)
-}
-
-// Texture includes player's skin and cape
-type Texture struct {
-	TimeStamp int64     `json:"timestamp"`
-	ID        uuid.UUID `json:"profileId"`
-	Name      string    `json:"profileName"`
-	Textures  struct {
-		SKIN, CAPE struct {
-			URL string `json:"url"`
-		}
-	} `json:"textures"`
 }
 
 // Texture unmarshal the base64 encoded texture of Resp
-func (r *Resp) Texture() (t Texture, err error) {
+func (r *Resp) Texture() (t user.Texture, err error) {
 	var texture []byte
 	texture, err = base64.StdEncoding.DecodeString(r.Properties[0].Value)
 	if err != nil {

yggdrasil/user/auth.go

@@ -0,0 +1,47 @@
+package user
+
+import (
+	"io"
+
+	"github.com/google/uuid"
+
+	pk "github.com/Tnze/go-mc/net/packet"
+)
+
+type Property struct {
+	Name, Value, Signature string
+}
+
+func (p Property) WriteTo(w io.Writer) (n int64, err error) {
+	return pk.Tuple{
+		pk.String(p.Name),
+		pk.String(p.Value),
+		pk.Option[pk.String, *pk.String]{
+			Has: p.Signature != "",
+			Val: pk.String(p.Signature),
+		},
+	}.WriteTo(w)
+}
+
+func (p *Property) ReadFrom(r io.Reader) (n int64, err error) {
+	var signature pk.Option[pk.String, *pk.String]
+	n, err = pk.Tuple{
+		(*pk.String)(&p.Name),
+		(*pk.String)(&p.Value),
+		&signature,
+	}.ReadFrom(r)
+	p.Signature = string(signature.Val)
+	return
+}
+
+// Texture includes player's skin and cape
+type Texture struct {
+	TimeStamp int64     `json:"timestamp"`
+	ID        uuid.UUID `json:"profileId"`
+	Name      string    `json:"profileName"`
+	Textures  struct {
+		SKIN, CAPE struct {
+			URL string `json:"url"`
+		}
+	} `json:"textures"`
+}