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mainoldgo
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mainoldgo
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package main
import (
"encoding/json"
"fmt"
"log"
"net/http"
"sync"
"time"
"github.com/kataras/neffos"
"github.com/kataras/neffos/gobwas"
"github.com/speedwheel/paddle-game/env"
"github.com/speedwheel/paddle-game/models"
)
/*
Read the README.md
*/
const (
addr = "localhost:8081"
endpoint = "/"
namespace = "default"
)
var (
players = make(map[string]models.Paddle)
ball = models.Ball{X: 1000 / 2, Y: 600 / 2, Radius: 10, Speed: 2}
connsMu sync.RWMutex
)
// userMessage implements the `MessageBodyUnmarshaler` and `MessageBodyMarshaler`.
type userMessage struct {
From string `json:"from"`
Text string `json:"text"`
}
// Defaults to `DefaultUnmarshaler & DefaultMarshaler` that are calling the json.Unmarshal & json.Marshal respectfully
// if the instance's Marshal and Unmarshal methods are missing.
func (u *userMessage) Marshal() ([]byte, error) {
return json.Marshal(u)
}
func (u *userMessage) Unmarshal(b []byte) error {
return json.Unmarshal(b, u)
}
var serverAndClientEvents = neffos.Namespaces{
namespace: neffos.Events{
neffos.OnNamespaceConnected: func(c *neffos.NSConn, msg neffos.Message) error {
log.Printf("[%s] connected to namespace [%s].", c, msg.Namespace)
var roomPlayersCount int
connections := c.Conn.Server().GetConnectionsByNamespace("default")
fmt.Println(connections)
var waitingPlayer string
for _, conn := range connections {
if conn.Room("battle") != nil {
waitingPlayer = conn.String()
fmt.Println(conn.String())
roomPlayersCount++
}
}
if roomPlayersCount == 0 {
c.JoinRoom(nil, "battle")
connsMu.Lock()
players[c.String()] = models.Paddle{
Player: 1,
}
connsMu.Unlock()
} else if roomPlayersCount == 1 {
var playerNumber = 2
c.JoinRoom(nil, "battle")
connsMu.Lock()
if players[waitingPlayer].Player == 2 {
playerNumber = 1
}
players[c.String()] = models.Paddle{
Player: playerNumber,
}
connsMu.Unlock()
}
return nil
},
neffos.OnNamespaceDisconnect: func(c *neffos.NSConn, msg neffos.Message) error {
log.Printf("[%s] disconnected from namespace [%s].", c, msg.Namespace)
return nil
},
neffos.OnRoomJoined: func(c *neffos.NSConn, msg neffos.Message) error {
text := fmt.Sprintf("[%s] joined to room [%s].", c, msg.Room)
log.Printf("%s", text)
c.Conn.Server().Broadcast(c, neffos.Message{
Namespace: msg.Namespace,
Room: msg.Room,
Event: "notify",
Body: []byte(text),
})
return nil
},
neffos.OnRoomLeft: func(c *neffos.NSConn, msg neffos.Message) error {
text := fmt.Sprintf("[%s] left from room [%s].", c, msg.Room)
log.Printf("%s", text)
connsMu.Lock()
if len(players) <= 2 {
delete(players, c.String())
}
connsMu.Unlock()
return nil
},
"input": func(c *neffos.NSConn, msg neffos.Message) error {
var input models.Paddle
if err := msg.Unmarshal(&input); err != nil {
return err
}
connsMu.Lock()
if len(players) > 0 {
if val, ok := players[c.String()]; ok {
val.Y = input.Y
players[c.String()] = val
}
}
connsMu.Unlock()
return nil
},
// client-side only event to catch any server messages comes from the custom "notify" event.
"notify": func(c *neffos.NSConn, msg neffos.Message) error {
if !c.Conn.IsClient() {
return nil
}
fmt.Println(string(msg.Body))
return nil
},
},
}
func main() {
env.Load("")
startServer()
}
func startServer() {
server := neffos.New(gobwas.DefaultUpgrader, serverAndClientEvents)
server.IDGenerator = func(w http.ResponseWriter, r *http.Request) string {
if userID := r.Header.Get("X-Username"); userID != "" {
return userID
}
return neffos.DefaultIDGenerator(w, r)
}
server.OnUpgradeError = func(err error) {
log.Printf("ERROR: %v", err)
}
server.OnConnect = func(c *neffos.Conn) error {
if c.WasReconnected() {
log.Printf("[%s] connection is a result of a client-side re-connection, with tries: %d", c.ID(), c.ReconnectTries)
}
log.Printf("[%s] connected to the server.", c)
// if returns non-nil error then it refuses the client to connect to the server.
return nil
}
server.OnDisconnect = func(c *neffos.Conn) {
log.Printf("[%s] disconnected from the server.", c)
}
log.Printf("Listening on: %s\nPress CTRL/CMD+C to interrupt.", addr)
http.Handle(endpoint, server)
go func() {
log.Fatal(http.ListenAndServe(addr, nil))
}()
const N = 50
ticker := time.NewTicker(time.Second / N)
for range ticker.C {
if len(players) <= 0 {
continue
}
connsMu.RLock()
paddleJSON, err := json.Marshal(players)
connsMu.RUnlock()
if err != nil {
fmt.Println(err)
}
msg := neffos.Message{Namespace: namespace, Room: "battle", Event: "input", Body: []byte(string(paddleJSON))}
server.Broadcast(nil, msg)
}
}