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tools/zsnes/docs/readme.txt/netplay.txt
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ZSNES v1.51 Documentation
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================================
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N a v i g a t i o n
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================================
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* Index [Index.txt]
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* Readme [Readme.txt]
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* GUI [GUI.txt]
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* Netplay [Netplay.txt]
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1. Things To Know
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2. Recommendations
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3. Simple Instructions
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4. Loading a Game
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5. Configuring
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6. Troubleshooting
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7. Links and Utilities
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* Advanced Usage [Advanced.txt]
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* Games [Games.txt]
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* FAQ [FAQ.txt]
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- - - - - - - - - - - - - - - - - -
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* Getting Support [Support.txt]
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* History [History.txt]
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* About [About.txt]
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* License [License.txt]
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- - - - - - - - - - - - - - - - - -
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* NSRT Guide: [http://zsnes-docs.sf.net/nsrt]
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* ZSNES Home Page: [ZSNES.com]
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================================================================================
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~ N e t p l a y
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================================================================================
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Netplay has been disabled for the indefinite future, until the core becomes more
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accurate and/or non-random. We recommend using ZSNES v1.36 or v1.42n
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[http://nsrt.edgeemu.com/forum/viewtopic.php?t=448] until this is resolved.
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The Netplay dialog is only accessible if a game is loaded.
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............................................................
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1. Things To Know
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............................................................
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- ZSNES currently limits Netplay to two computers. Up to five players can
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still play, however (by having more than one player at either of the two
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computers).
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- A game must be on each computer in order to have it available for Netplay.
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- You cannot use cheat codes, key combinations, or turbo keys in Netplay.
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............................................................
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2. System Recommendations for Smooth Netplay
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............................................................
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- Both users must use the *same version* of ZSNES (e.g. Both users should be
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using v1.36).
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- Both users should be using reasonably fast computers (about 800mhz). If
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one user has a slow computer (e.g. 200mhz) while the other has a fast one,
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the slow computer's low framerate will bog down the fast computer, causing
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poor framerates on the fast computer.
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- Both users should be using the same setting for sound (either enabled or
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disabled; see the Config-->Sound menu in the GUI or the ZSNES
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configuration file).
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- Back Buffer must be enabled and the latency value must be 3 or 2 (reduce
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it to 2 for fast-paced platform games).
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- The games have to run at least 50 FPS on BOTH computers without Netplay.
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This can completely depend on factors such as CPU, video card, video mode,
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and the game you are running. (See System Requirements [Readme.txt]).
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- Both users must use the same protocol setting (either UDP or TCP). If both
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players are on the same LAN, you should use UDP (it has lower overhead).
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Otherwise, use TCP (no packet loss).
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- You will also need an Internet connection with ping times of less than
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400ms between both connections. The higher than ping time, the worse the
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Netplay experience, since ping times measure the time it takes for data to
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get to the other side and back. You can expect a not-so-great performance
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if you have a ping time of 400 or greater.
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............................................................
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3. Simple Instructions
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............................................................
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1. Go to Netplay -> Internet.
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2. Decide who will be the server and who will be the client.
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(Neither has the gameplay advantage since ZSNES treats both the same
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after a connection is established).
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3. If you are the server, send the IP that is shown on the connection window
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to your friend (e.g. through any chat program (ICQ, AIM, IRC, etc.)).
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Then click on 'Start Server'.
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4. If you are the client, type in the IP address that your friend has given
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you and then click on 'Connect to Server'.
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5. Chat with your friend on what game to play.
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6. Once decided, make sure that the filename on both sides are the same and
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that the load window points to the directory where the filename is.
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7. Load the game.
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8. Have fun! (If it worked)
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9. If it said 'Checksum Mismatch', try uncompressing the file if it is
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compressed. If not, then both sides have a different version of that ROM
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(e.g. One side has the Japanese version while the other has the English,
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or both versions are English, but are different version releases of the
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same game).
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10. If you want to chat in-game, press 'T' and type in your line. You can
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change this key in the Misc -> Misc Keys options from the GUI.
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............................................................
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4. Loading a Game
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............................................................
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Once successfully connected, the chat window should open up.
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From there, you can load a game as you normally would. But in order to load a
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game, both sides must have their load window pointing to the directory where
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the game is located and also have identical filenames for the game. Only one
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side has to load the game; after that, the other side will automatically load
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the game without the user's interaction.
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If an error pops up saying 'ROM data mismatch', then it means that either side
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has a different version of the ROM. This sometimes happens with compressed files
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even when both files are the same, so it is recommended that you uncompress the
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games and try again if this error occurs.
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............................................................
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5. Configuring Options
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............................................................
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The default settings are recommended.
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However, if your computer is slower than 266 MHz, then it is recommended that
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both sides play with back buffer disabled. Note that disabling this will degrade
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controller response.
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You can increase the latency value if the average ping time between both
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connections is high (you can tell if the gameplay runs too jerky).
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Reducing the latency value when back buffer is enabled will improve controller
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response time. However, this will cause the remote player to jump around more
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in order to keep both sides in sync.
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For controller options (PL1, PL2, PL3,..), the first checkmarked player would be
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using Input #1 of the local side. The second checkmarked player would be using
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Input #2 and so on. Players marked with an 'X' are checkmarked on the remote
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side.
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............................................................
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6. Troubleshooting
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............................................................
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- If you are the client, and it failed to connect, check to make sure that
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the IP you entered is correct and that you are properly connected to the
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Internet.
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- If you are the server, and the IP provided in the connection window
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doesn't seem to be the correct one, you can visit
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[http://www.whatismyipaddress.com] to determine the correct one. Then tell
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your client what it is so he or she can connect. Alternatively, if you're
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using mIRC, just type /dns <nick>.
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- If the client says 'Found Client' and nothing else happens, chances are
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that your net connection does not support UDP. If this is the case, both
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sides will need to deselect 'Use UDP Instead of TCP'. However, it is
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strongly recommended that you use UDP if possible since it is much faster
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than TCP.
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- If you have Windows 95 and you are getting a init failed error, you should
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download and install the Winsock 2.0 update for Windows 95:
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[http://www.microsoft.com/Windows95/downloads/contents/WUAdminTools
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/S_WUNetworkingTools/W95Sockets2/Default.asp].
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Warning: Do not install this if you do not have Windows 95.
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- You may need to disable your firewall (or just disable it for UDP port
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7845) in order to get the UDP protocol that ZSNES's Netplay uses to work.
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- Internet Connection Sharing users (Win9x systems) may need to download an
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ICS Configuration utility to get the connection to work and map UDP port
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7845. You can use "ICS Configuration", found here:
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[http://www.practicallynetworked.com/sharing/ics/icsconfiguration.htm].
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- If you need help forwarding your router port, you may refer to AntoineWG's
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Router Port Forwarding Guide. You should be able to find this guide at the
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ZSNES board [http://board.zsnes.com].
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- Tips for reducing general slowdown can be found under "Why is ZSNES slow?"
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in the Speed section of the FAQ page [FAQ.txt].
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............................................................
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7. Links and Utilities
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............................................................
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The following websites provide a way to find and connect to other players in
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order to use Netplay. Some of the sites provide a program, while one provides an
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IRC script.
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Please note that these websites are in no way officially affiliated with ZSNES.
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We make no warranty as to their usefulness or safety. If you have problems with
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these utilities, please seek help from their respective web sites, NOT from the
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ZSNES web site.
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ZSNES Online [http://www.zsnesonline.com] - This is an excellent program with
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several features, including a centralized chat server, that allows you to
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setup a Netplay session easily.
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zbattle.net [http://www.zbattle.net] - A service that allows ZSNES users to
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easily find others who want to take advantage of the emulator's built-in
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Netplay support. zbattle.net currently runs on Windows 9x/ME/NT/2k/XP and
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Linux.
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Z-Net [http://www.z-net.tk] - This is an active IRC channel with a custom script
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for ZSNES Netplay.
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zConnector [http://420666.net/z/] - A utility with a nice GUI that allows you to
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find players and play SNES games using ZSNES Netplay.
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. . . . . . . . . . . . . . . .
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This documentation is best viewed in a fixed-width font such as "Courier New".
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Copyright (C) ZSNES Team & ZSNES Documentation Team [License.txt]
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