semi synced multiplayer

server/server.go

@@ -10,14 +10,22 @@ import (
 )
 
 const (
-	MsgKeyPress  uint16 = 1
-	MsgGameState uint16 = 2
-	MSGServerStatus uint16 = 3
-	MSGOnConnect uint16 = 4
+	MsgKeyPress        uint16 = 1
+	MsgGameState       uint16 = 2
+	MSGServerStatus    uint16 = 3
+	MSGOnConnect       uint16 = 4
+	MSGOnPlayerConnect uint16 = 5
 )
 
 var num_clients int = 0
-var clients = map[int]net.Conn{}
+var clients = make(map[string]client)
+
+type client struct {
+	x         uint
+	y         uint
+	client_id string
+	conn      net.Conn
+}
 
 func Start() {
 	listener, err := net.Listen("tcp", ":9000")
@@ -34,18 +42,25 @@ func Start() {
 			continue
 		}
 
+		// client connects
 		num_clients += 1
 		client_id := strconv.Itoa(num_clients)
 		fmt.Println(client_id)
 		go SendPacket(MSGOnConnect, []byte(client_id))
-		addClient(conn, num_clients)
+		go SendPacket(MSGOnPlayerConnect, []byte(client_id))
+
+		addClient(conn, client_id)
 
 		go handle(conn)
 	}
 }
 
-func addClient(conn net.Conn, id int) {
-	clients[id] = conn
+func addClient(conn net.Conn, id string) {
+	var new_client client = client{
+		client_id: id,
+		conn:      conn,
+	}
+	clients[id] = new_client
 }
 
 func SendPacket(msgID uint16, payload []byte) error {
@@ -57,8 +72,8 @@ func SendPacket(msgID uint16, payload []byte) error {
 	binary.BigEndian.PutUint16(buf[4:6], msgID)
 	copy(buf[6:], payload)
 
-	for _, conn := range clients {
-		n, err := conn.Write(buf)
+	for _, client := range clients {
+		n, err := client.conn.Write(buf)
 		if err != nil {
 			return err
 		}