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357 Commits

Author SHA1 Message Date
Gregor Richards
e79f30604f Better stall timing 
We now stall not until we've reached parity (which makes no sense since
we expect latency), but only until we're not likely to stall again.
 2016-12-18 19:28:44 -05:00
Gregor Richards
8195a5bcee Try to catch up if we're falling behind our peer, not anyone 
In the previous catch-up system, we would only try to catch up if we
were falling behind the farthest-behind peer. However, as they would
also only try to catch up to us, everyone basically agreed to the
worst-case latency. It makes more sense to try to be in parity with your
direct peer than with indirect connections.
 2016-12-18 19:28:44 -05:00
Gregor Richards
b535412914 Adding nick-changing 
This is just to disambiguate multiple connections with the same nick
(usually Anonymous), which will now become e.g. Anonymous (2).
 2016-12-18 19:28:44 -05:00
Gregor Richards
7c2f12fbd9 Removign some leftover debug code 2016-12-18 19:28:44 -05:00
Gregor Richards
04266cf4f7 Run synchronization even when stalled 
Previously, we could be stalled by one player but still reading data
from another, which would wedge the client because we would never act
upon the newly-read data. Now we act upon data even if we're stalled.
Fixes bugs in initial connection with high latency.
 2016-12-18 19:28:44 -05:00
Gregor Richards
d6d96704fd Don't panic about delta frames not being ready if we're not even fully 
connected yet.
 2016-12-18 19:28:43 -05:00
Gregor Richards
8b21014d07 Improvements to handshake protocol 
Making the netplay handshake protocol send the core and content as an
explicit command, so that the other side can (notionally) choose to load
it. That isn't implemented, of course.
 2016-12-18 19:28:43 -05:00
Gregor Richards
1fa60b396f Improvements to the communication of netplay pausing. 2016-12-18 19:28:43 -05:00
Gregor Richards
db2c8de44c Slightly changing how catch-up works to avoid spamming the console 2016-12-18 19:28:43 -05:00
Gregor Richards
1141825605 Documenting (somewhat) the new sync system. 2016-12-18 19:28:43 -05:00
Gregor Richards
a20e79bbb5 Server needs double the buffer frames since two connected clients could 
be ahead and behind by the max frames
 2016-12-18 19:28:43 -05:00
Gregor Richards
f7f6590156 Goodbye delay_frames! stateless_mode is the new delay_frames=0 2016-12-18 19:28:43 -05:00
Gregor Richards
45d732a014 New sync system 
The idea:
   * Use a fixed number of delay_frames (eventually to be fixed at 120,
     currently still uses the config variable, 0 will still be an option)
   * Determine how long it takes to simulate a frame.
   * Stall only if resimulating the intervening frames would be
     sufficiently annoying (currently fixed at three frames worth of
     time)

Because clients always try to catch up, the actual frame delay works out
automatically to be minimally zero and maximally the latency. If one
client is underpowered but the other is fine, the powerful one will
automatically take up the slack. Seems like the most reasonable system.
 2016-12-18 19:28:43 -05:00
Gregor Richards
6890456ac0 Updated error messages and fixed some stall-related disconnected-client 
bugs.
 2016-12-18 19:28:43 -05:00
Gregor Richards
6658826759 CRC validity checking. Ignore CRCs if they don't work. 2016-12-18 19:28:43 -05:00
Gregor Richards
a6cd8c3aa1 Error reporting when a password is refused, plus a bugfix so that 
socket_receive_all_nonblocking actually reports disconnects.
 2016-12-18 19:28:43 -05:00
Gregor Richards
df2600fbf4 Added error reporting when a player is not allowed to play. 2016-12-18 19:28:43 -05:00
Gregor Richards
bade067d9a Support for catching up if the netplay peer is ahead of us. 2016-12-18 19:28:43 -05:00
Gregor Richards
4e01481b39 Only allow clients to load state if there's no further synchronization 2016-12-18 19:28:43 -05:00
Gregor Richards
70d04ec6a5 Apparently the frontend gets really pissy if it can't check the flip state 2016-12-18 19:28:43 -05:00
Gregor Richards
da7efcb939 Cleaning up netplay headers. 2016-12-18 19:28:43 -05:00
Gregor Richards
9c6ac2b934 Only the server can flip users. 2016-12-18 19:28:43 -05:00
Gregor Richards
03415c261d Added netplay spectator password separate from play password 2016-12-18 19:28:43 -05:00
Gregor Richards
694b7a9723 Don't allow more players to join than are actually being polled 2016-12-18 19:28:43 -05:00
Gregor Richards
7ad4e3f115 Per-connection stalling 2016-12-18 19:28:43 -05:00
Gregor Richards
1b22191869 Deduplicating some code. 2016-12-18 19:28:43 -05:00
Gregor Richards
f619789e48 Refactoring: netplay_common.c -> netplay_handshake.c/netplay_delta.c 
Refactoring netplay_common into its two actual components, the handshake
and delta-frame related functions.
 2016-12-18 19:28:43 -05:00
Gregor Richards
4e905bf524 Refactoring: netplay_sync.c 
Renamed netplay_net.c to netplay_sync.c, as all that remains in that
file is synchronization-related functions.
 2016-12-18 19:28:43 -05:00
Gregor Richards
257c5d3188 Refactoring netplay_init.c/netplay_net.c 
Split the remainder of netplay.c into netplay_init.c and netplay_net.c
(which will soon be netplay_sync.c)
 2016-12-18 19:28:43 -05:00
Gregor Richards
7e2465ef1f Refactoring: Moving I/O functionality into netplay_io.c 2016-12-18 19:28:43 -05:00
Gregor Richards
8c59c7dd77 Starting to refactor: Separating frontend stuff into netplay_frontend.c 2016-12-18 19:28:43 -05:00
Gregor Richards
ab989d7f41 More careful disconnection. 2016-12-18 19:28:43 -05:00
Gregor Richards
c8bba9a981 Simplistic builtin randomizer. 2016-12-18 19:28:43 -05:00
Gregor Richards
28e331b5fd Remove some magic numbers 2016-12-18 19:28:43 -05:00
Gregor Richards
6e6f2bfdbe Use a proper password hash across the line. 2016-12-18 19:28:42 -05:00
Gregor Richards
763a657f82 Terrible first cut at password (sent in plain text D-8) 2016-12-18 19:28:42 -05:00
Gregor Richards
5a0328dc09 Transfer pad configuration over netplay. 2016-12-18 19:28:42 -05:00
Gregor Richards
888e45c88b Updates to allow the server to toggle game/watch 2016-12-18 19:28:42 -05:00
Gregor Richards
3631ff74ff Very, very partial support for the server spectating 2016-12-18 19:28:42 -05:00
Gregor Richards
3d7f1f6575 Updating Netplay README to be more true 2016-12-18 19:28:42 -05:00
Gregor Richards
f6f9905ae3 Made remote pausing connection-specific 2016-12-18 19:28:42 -05:00
Gregor Richards
6556af1100 force_send_savestate is global again 
We cannot send a savestate to only one player, as sending a savestate is
a synchronization event invalidating all prior input.
 2016-12-18 19:28:42 -05:00
Gregor Richards
3d34c0222f Added simple (cheesy) announcements on join/leave 2016-12-18 19:28:42 -05:00
Gregor Richards
727743aa7b Fixing a couple FIXMEs/TODOs 2016-12-18 19:28:42 -05:00
Gregor Richards
2130fd81a5 Fixed simulation for >2 players 2016-12-18 19:28:42 -05:00
Gregor Richards
262d77546b Adding game/watch key 
Adding a key to toggle between playing and spectating. This key takes
the place of the previous flip key, although player flipping does
continue to work (and must be rebound if you still want it)
 2016-12-18 19:28:42 -05:00
Gregor Richards
90c15fc7a6 Still need to flush input data. 2016-12-18 19:28:42 -05:00
Gregor Richards
e7ce01ad3b More renaming 
Now that remote_input_state isn't always remote, it should just be
called real_input_state (and is).
 2016-12-18 19:28:42 -05:00
Gregor Richards
f6630ad85a More fixups for >2 player mode. Mostly was just sending packets that 
shouldn't have been sent.
 2016-12-18 19:28:42 -05:00
Gregor Richards
479955a085 More 3-player support. The initial connection is wonky with 
delay_frames>0
 2016-12-18 19:28:42 -05:00