| None. |
|
Returns the id of the player the last received message came from. After RecvNetMsg returns 1, this identifies the sender - the id that player was given by CreateNetPlayer on their machine. Feed it to NetPlayerName$ for a display name, or use it as the key to find that player's ship or score in your own data. For the system messages it identifies the subject instead: on a join (type 100) it is the new player, on a leave (type 101) the player who left. Since local-to-local messages are never delivered, the id is always a player on another machine. See also: RecvNetMsg, NetMsgType, NetMsgTo, NetMsgData, NetPlayerName. |
; NetMsgFrom Example
; ------------------
; Run TWO copies of this program on one machine: the first copy
; hosts "demo game", the second finds it over loopback and joins.
; NetMsgFrom identifies who sent each received message.
SeedRnd MilliSecs()
; Join an existing demo game if one is running, else host one
status=JoinNetGame("demo game","127.0.0.1")
If status=1 Then
Print "Joined an existing demo game as a client"
Else
If HostNetGame("demo game")=2 Then status=2
If status=2 Then Print "No game found - hosting a new demo game"
EndIf
If status=0 Then
Print "Could not host or join a network game."
Else
; A player must exist before messages can be sent or received
me=CreateNetPlayer("Player"+Rand(100,999))
Print "Playing as '"+NetPlayerName$(me)+"' (id "+me+")"
; Broadcast a greeting for the other copy to receive
SendNetMsg 1,"Hello from "+NetPlayerName$(me),me,0,1
Print "Listening for messages for 6 seconds..."
start=MilliSecs()
heard=0
While MilliSecs()-start<6000
If RecvNetMsg() Then
mtype=NetMsgType()
If mtype>=1 And mtype<=99 Then
heard=heard+1
; NetMsgFrom returns the sender's player id -
; NetPlayerName$ turns it back into a name
sender=NetMsgFrom()
Print "Message '"+NetMsgData$()+"'"
Print " NetMsgFrom = "+sender+" ('"+NetPlayerName$(sender)+"')"
If mtype=1 Then SendNetMsg 2,"Reply!",me,sender,1
EndIf
EndIf
Delay 10
Wend
If heard=0 Then
Print "No messages arrived - a program only hears OTHER copies."
Print "Start a second copy of this example to see the senders."
EndIf
StopNetGame
Print "Left the game"
EndIf
Print ""
Print "Press any key to close the example"
WaitKey
End