func recvUpdates(conn *network.GameConn, update chan *network.RoomUpdate, activity chan string) {
for {
resp, msgType, err := network.Recv(conn)
if err != nil {
log.Fatal(err)
}
if msgType == network.TypeRoomUpdate {
update <- resp.RoomUpdate
} else if msgType == network.TypeResp {
if resp.Resp.Message != "" {
activity <- resp.Resp.Message
} else if !resp.Resp.Success {
activity <- "Invalid command (type 'help' and hit enter for assistance)"
}
}
}
}
/* Each client gets one of these threads to listen to it, send data to it,
and handle validation for the life of the client */
func (client ClientConn) clientReceiver() {
for {
resp := network.GameMsg{Resp: &network.Resp{Success: false}}
req, msgType, err := network.Recv(client.GameConn)
if err != nil {
if client.room != nil {
client.room.CmdChanWriteSync <- RoomHandlerCmd{Pc: client.pc, Cmd: "rem"}
<-client.room.CmdChanReadSync
}
log.Print(err)
return
}
switch msgType {
// Log in request
case network.TypeLoginReq:
// A few sanity checks
if req.LoginReq.Version < MIN_CLIENT_VERSION {
log.Printf("Attempt to log in with old client version %d (min version is %d)\n", req.LoginReq.Version, MIN_CLIENT_VERSION)
resp.Resp.Message = "Your client version is too old for this server. Please update to the latest version."
break
} else if client.user != nil {
log.Printf("Multiple login attempts from %s\n", req.LoginReq.Username)
resp.Resp.Message = "ERROR: Duplicate login attempt."
break
}
client.user, err = userLogin(req.LoginReq.Username, req.LoginReq.Password)
if err != nil {
log.Printf("Failed login for user %s\n", req.LoginReq.Username)
resp.Resp.Message = "Incorrect username or password. Please try again."
break
}
// Successfully logged in
log.Printf("Successful login from %s\n", req.LoginReq.Username)
resp.Resp.Message = "Successfully logged in as " + client.user.Username
resp.Resp.Data = client.user.Actors
resp.Resp.Success = true
// Request to assume actor
case network.TypeAssumeActorReq:
if client.user == nil {
log.Printf("Attempted to assume %s without logging in\n", req.AssumeActorReq.Actor)
resp.Resp.Message = "You must log in first"
break
} else if client.pc != nil {
//TODO: Allow user to switch players
log.Printf("User %s attempted to assume a second actor %s\n", client.user.Username, req.AssumeActorReq.Actor)
resp.Resp.Message = "You cannot play two characters at once."
break
}
client.pc, client.roomCoords, err = NewPc(req.AssumeActorReq.Actor, client.user)
if err != nil {
log.Printf("User %s failed to assume actor %s\n", client.user.Username, req.AssumeActorReq.Actor)
resp.Resp.Message = "Unable to use that character"
break
}
// Successfully assumed an actor. Get our room's channels and ask the room to add us.
gWorld.RoomFetcherInChan <- RoomFetcherMsg{Direction: NoDirection, RoomCoords: client.roomCoords}
fetcherMsg := <-gWorld.RoomFetcherOutChan
client.room = fetcherMsg.Room
client.room.CmdChanWriteSync <- RoomHandlerCmd{Pc: client.pc, Cmd: "add", UpdateChan: client.SendChanWrite}
resp.Resp.Success = <-client.room.CmdChanReadSync
if resp.Resp.Success {
log.Printf("User %s successfully assumed actor %s\n", client.user.Username, req.AssumeActorReq.Actor)
resp.Resp.Message = "Successfully assumed character " + client.pc.Name
} else {
log.Printf("User %s failed to enter room with %s\n", client.user.Username, req.AssumeActorReq.Actor)
resp.Resp.Message = "Failed to enter room"
}
// Command
case network.TypeCmdReq:
// Assign actor
req.CmdReq.Actor = client.pc.Name
// Validate that it is a supported command, no sense in clogging up the room handler if it's not
switch req.CmdReq.Cmd {
case "say":
fallthrough
case "attack":
resp.Resp.Success = true
client.room.CmdChanWriteAsync <- *req
case "go":
var dir int
resp.Resp.Success = true
switch req.CmdReq.Arg1 {
case "north":
dir = North
case "south":
dir = South
case "east":
dir = East
case "west":
dir = West
default:
resp.Resp.Success = false
}
if !resp.Resp.Success {
break
}
coords := *client.roomCoords
gWorld.RoomFetcherInChan <- RoomFetcherMsg{Direction: dir, RoomCoords: client.roomCoords}
fetcherMsg := <-gWorld.RoomFetcherOutChan
if fetcherMsg.Room == nil || fetcherMsg.RoomCoords == nil {
// Error from room fetcher
resp.Resp.Success = false
break
}
if coords.Row == client.roomCoords.Row && coords.Col == client.roomCoords.Col {
resp.Resp.Success = false
resp.Resp.Message = "You cannot go that way"
break
}
client.room.CmdChanWriteSync <- RoomHandlerCmd{Pc: client.pc, Cmd: "rem", UpdateChan: client.SendChanWrite}
resp.Resp.Success = <-client.room.CmdChanReadSync
if !resp.Resp.Success {
break
}
fetcherMsg.Room.CmdChanWriteSync <- RoomHandlerCmd{Pc: client.pc, Cmd: "add", UpdateChan: client.SendChanWrite}
resp.Resp.Success = <-fetcherMsg.Room.CmdChanReadSync
if !resp.Resp.Success {
break
}
client.room = fetcherMsg.Room
resp.Resp.Success = true
default:
// Don't log to server logs every time someone mistypes a command
resp.Resp.Message = "Invalid command"
}
default:
log.Printf("Recv'd invalid type: %d\n", msgType)
resp.Resp.Message = "ERROR: Invalid message type (" + strconv.Itoa(msgType) + ")."
}
// Send response and listen for another message
client.SendChanWrite <- resp
}
}
func main() {
log.SetFlags(log.Lshortfile)
// Prompt the user for their name and pass
var name, pass, character string
fmt.Printf("*** Stuff N' Things the RPG ***\n")
fmt.Printf("Login:"******"Password:"******"Logging in as %s\n", name)
req := network.GameMsg{LoginReq: &network.LoginReq{Version: 1, Username: name, Password: pass}}
//log.Printf("main: %s\n", req);
// Connect to the server
conn, err := network.Connect("")
if err != nil {
log.Fatal(err)
}
// Send the request
err = network.Send(conn, req)
if err != nil {
log.Fatal(err)
}
resp, msgType, err := network.Recv(conn)
if err != nil {
log.Fatal(err)
}
// Did we log in successfully?
if msgType == network.TypeResp && resp.Resp.Success == true {
fmt.Printf("Login Successful :)\n")
} else {
fmt.Printf("Login Failed :(\n")
fmt.Printf("Server says: %s\n", resp.Resp.Message)
os.Exit(1)
}
// Character select
fmt.Printf("Available characters:\n")
for index, each := range resp.Resp.Data {
fmt.Printf("%d) %s\n", index+1, each)
}
fmt.Printf("Which character would you like to play? ")
fmt.Scanln(&character)
req = network.GameMsg{AssumeActorReq: &network.AssumeActorReq{Actor: character}}
// Send the request
err = network.Send(conn, req)
if err != nil {
log.Fatal(err)
}
update := make(chan *network.RoomUpdate)
activity := make(chan string)
sendChanWrite, sendChanRead := network.NewPipe()
go sendCmds(conn, sendChanRead)
go recvUpdates(conn, update, activity)
// Set up the UI
// TODO: make this whole deal an object, add character and other stuff to it as a member
startUI(update, activity, sendChanWrite, character)
}