How To Get Netplay For Mac

Netplay is a defining feature of Dolphin: it allows you to connect any GameCube or Wii game for online play, without the problems or limitations of the Nintendo WiFi Connection or hassle of BBA. It is improving regularly, and while it is a bit finicky at the moment it is very playable and reliable with the right settings. This guide outlines what you need for reliable online play with Dolphin.

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Now to make this work in netplay: The issue seems to be that sdv4 relies on a custom save to work (the 00010000 folder), but when dolphin.

• 2Setting Up Dolphin
  • 2.1General Configuration
  • 2.2Graphics Configuration
• 3Netplay Settings

Requirements

• Internet requirements are very light: any DSL or Cable internet connection should do. However, the internet demands rapidly increase as more players are added.
• Game disc images between players must have matching region and game revision. ISO, WBFS and other compression formats are OK. The player who do not have a game on one's end will face the 'Game not found' error message. The game must be added to Dolphin game list if hasn't already.
• All players should use the same Dolphin build, preferably the latest development build from http://dolphin-emu.org. It is favorable to have a dedicated Dolphin profile for Netplay for the special settings and save files. It can be isolated from your main Dolphin profile by using 'portable.txt' or create a special shortcut. In the latest development builds, Dolphin will not allow users to use different revisions of Dolphin for netplay.

Setting Up Dolphin

Memory card of any kinds must be copied across every computers that players intended to use for netplay. Memory Cards for GameCube can be synchronized or disabled, meanwhile players may have to copy SD card to other computers themselves. NAND, which is also home of Wii save files, are disabled as of 4.0-6512. This means users do not need to play online with different Wii NANDs any longer. Dolphin build 5.0-8478 introduced synchronization of Wii saves. It is currently not possible to synchronize the whole NAND yet.

Rule of thumb is that most settings should be set to default and you are expected to follow specific settings where the instruction (made by host or matchmaking websites) has told you to set before playing online.

General Configuration

• Deterministic Dualcore Netplay is now merged into master. While compatibility is not perfect, it should allow more games to synchronize on dualcore with three exceptions. Games that require Skip EFB Access to CPU, Store EFB Copies to Texture Only and/or Disable XFB unchecked in the Graphics > Hacks settings are not guaranteed to sync up. There are exceptions to this, but single core is recommended in games that require those settings. As well, some games are not compatible with deterministic dualcore netplay and will hang. Disabling Dualcore will provide better compatibility but lower performance.

Settings Synced

As of 5.0-8502 most settings that affect determinism will be synced to other clients, so only the host needs to ensure correct settings. Games which use EFB reads or EFB to RAM are likely to desync with mismatched graphics settings, therefore Strict Settings Sync should be used, which will additionally sync most graphics settings except for backend.

On older revisions, only these settings will be synced over:

• Advanced Settings from General menu
• Misc Settings from Wii menu
• CPU Options from Advanced menu

Graphics Configuration

• Most settings under Enhancements menu can mostly be turned on or off without incident on higher end processors. The only exception to this is when an enhancement breaks a game, such EFB Copy readback. If a game requires EFB Access from CPU or EFB Copies Stored to RAM for game mechanics will need Single Core to sync.

Controller Settings

• Enable and configure GameCube controller port 1 for your controller (this applies to both host and joiners) then enable other ports corresponding number of players willing to join and leave them dummy 'plugged in'. Any additional local players should use second or third ports.

• Wiimotes bindings work more or less the same way as GameCube Controller settings, but are much less consistent. Real Wiimotes are not supported at all and will not give input. Emulated Wiimotes can work, but attachments are more or less unsupported. Even when everything is configured perfectly, there is still a chance of desync. If a game using emulated Wiimotes starts up and does not freeze, it will usually play fine for the remainder of session but is not guaranteed to work after that.

Netplay Settings

How to set the Pad buffer

Because input on the GameCube and Wii are polled by non-frame intervals, buffer does not directly relate to frames and can even vary per game. Lower the buffer as much as possible without causing slowdown for an optimal experience, ideally in areas that insure there isn't computer related slowdown such as a menu. In most games, add 1 roughly pad buffer per 15ms of latency per client. Two players at 50ms latency would be roughly 3 - 4 buffer, where as three players at 50 and 65 ms would be roughly 7 buffer.

Assigning Controller Ports

By default, only players of the first port on each computers will be used. The host will be player one, and the first joiner will be player two, and so on. But the host can change the port order and invite the secondary players of the same computer. To do so, simply hit the 'Assign Controller Ports' button, then add and/or order their names to the port number respectively.

Setting a Spectator

A Spectator is a connected computer that has no controllers assigned to them. This can be done by going to the 'Configure Pads' window (only host has access to it) and remove the spectator's name from any of the controller ports. The spectator will not cause lag or latency but can still watch the netplay session.

Reduce Polling Rate

This option can significantly reduce network usage in some cases by polling the controllers only twice per frame instead of at the game's configured interval. This does not cause any issues in tested games, however testing was not comprehensive so edge cases may exist.

Host Input Authority

This gives the host control over when inputs are sent to the game, effectively decoupling players from each other in terms of buffering. This allows players to have latency based solely on their connection to the host, rather than everyone's connection. Buffer works differently in this mode. The host always has no latency, and the buffer setting serves to prevent stutter, speeding up when the amount of buffered inputs exceeds the set limit. Input delay is instead based on ping to the host.

This can result in smoother gameplay on unstable connections, as well as allowing players with much higher latency than others to play without increasing everyone's latency. However, this comes at the expense of latency fairness, which may make it not suitable for competitive play.

Desync Troubleshooting

Double check your settings and confirm if you and other players have good ISO dump. 4.0-6638 added the ability to detect desyncs. Watch the textbox for desync notifications, as very often it will be able to tell the game has desynced before the players and may help them pinpoint the problem.

Netplay has matured considerably in recent time, but still requires user competency and problem solving to get over some of the hurdles.

Comments

• Good question. SNES9X Custom really kicks ass and I believe it's open source, why not just write the author and ask?
• I think I'll do just that.. but when I get home from work.
• Quote:
  

  
  Originally posted by Brad
  The regular SNES9X does it.
  

  
  

  
  Are you sure? Under OS X?
• Can any1 send me a copy of the regular SNES 9X? The link from emulation.net is broken...
• OK. I got a copy.. When I try and do netplay it says that it needs the netsprocket and that the netsprocket isn't available under Mac OS X..... -_- Brad how did u get SNES 9X working with Netplay under OS X?