Send player join/left message

chat/message.go

@@ -21,6 +21,26 @@ import (
 	pk "github.com/Tnze/go-mc/net/packet"
 )
 
+// Colors
+const (
+	Black       = "black"
+	DarkBlue    = "dark_blue"
+	DarkGreen   = "dark_green"
+	DarkAqua    = "dark_aqua"
+	DarkRed     = "dark_red"
+	DarkPurple  = "dark_purple"
+	Gold        = "gold"
+	Gray        = "gray"
+	DarkGray    = "dark_gray"
+	Blue        = "blue"
+	Green       = "green"
+	Aqua        = "aqua"
+	Red         = "red"
+	LightPurple = "light_purple"
+	Yellow      = "yellow"
+	White       = "white"
+)
+
 // Message is a message sent by other
 type Message struct {
 	Text string `json:"text,omitempty"`
@@ -99,6 +119,11 @@ func (m Message) Append(extraMsg ...Message) Message {
 	return m
 }
 
+func (m Message) SetColor(color string) Message {
+	m.Color = color
+	return m
+}
+
 func Text(str string) Message {
 	return Message{Text: str}
 }

server/chat.go

@@ -47,30 +47,51 @@ func (g *GlobalChat) Init(game *Game) {
 	})
 }
 
+const (
+	chatPosChat = iota
+	chatPosSystem
+	chatPosGameInfo
+)
+
 func (g *GlobalChat) Run(ctx context.Context) {
 	for {
 		select {
 		case <-ctx.Done():
 			return
 		case item := <-g.msg:
-			packet := Packet757(pk.Marshal(
+			g.broadcast(Packet757(pk.Marshal(
 				packetid.ClientboundChat,
 				item.toMessage(),
-				pk.Byte(0),
+				pk.Byte(chatPosChat),
 				pk.UUID(item.p.UUID),
-			))
+			)))
+		case p := <-g.join:
+			g.broadcast(Packet757(pk.Marshal(
+				packetid.ClientboundChat,
+				chat.TranslateMsg("multiplayer.player.joined", chat.Text(p.Name)).SetColor(chat.Yellow),
+				pk.Byte(chatPosSystem),
+				pk.UUID(uuid.Nil),
+			)))
+			g.players[p.UUID] = p
+		case p := <-g.quit:
+			g.broadcast(Packet757(pk.Marshal(
+				packetid.ClientboundChat,
+				chat.TranslateMsg("multiplayer.player.left", chat.Text(p.Name)).SetColor(chat.Yellow),
+				pk.Byte(chatPosSystem),
+				pk.UUID(uuid.Nil),
+			)))
+			delete(g.players, p.UUID)
+		}
+	}
+}
+
+func (g *GlobalChat) broadcast(packet Packet757) {
 	for _, p := range g.players {
 		err := p.WritePacket(packet)
 		if err != nil {
 			p.PutErr(err)
 		}
 	}
-		case p := <-g.join:
-			g.players[p.UUID] = p
-		case p := <-g.quit:
-			delete(g.players, p.UUID)
-		}
-	}
 }
 
 func (g *GlobalChat) AddPlayer(player *Player) { g.join <- player }