Protocol:Packet 0x60

Clients send Packet 0x60 to the server to forward a "game command" to all clients in the lobby. This is used for various things in game, including telling clients what items are dropped when a box is opened (clients "ask" the party leader what should be dropped with a form of Packet 0x62 and the party leader replies with a Subcommand 0x5F).

PSO v3 (GameCube, Xbox, Blue Burst) sometimes uses packet 0x6C, which has exactly the same format and function as 0x60.

PSO Episode 3 sometimes uses packets 0xC9 and 0xCB in games, which also behave exactly like 0x60. Sending an 0xC9 or 0xCB to a non-Episode 3 client would cause that client to disconnect.

Main Packet Format

Dreamcast

Bytes	Meaning
0x00	Packet Type (0x60 or 0x6C)
0x01	Flags
0x02-0x03	Packet Size (Variable)
0x04	Subcommand Type
0x05	Subcommand Size (in 32-bit increments, not including the main packet header, but including everything Subcommand type and later)
0x06	Client ID of initiating client
0x07	Unused?
0x08...	Subcommand Data

Subcommands

Various subcommands are sent with this packet, and this is not necessarily meant to be an exhaustive list of them (although, I'd love it if it were eventually). Note that many of these, I don't know exactly how they work or how to fill them in...

Subcommand 0x2C

Subcommand 0x2C (size 0x05) is used to tell other clients that someone is talking to an NPC.

Bytes	Meaning
0x00-0x01	??? (Always seems to be 0xFFFF)
0x02-0x03	??? (Always seems to be 0)
0x04-0x07	Location ? (Matches up with stuff from packets nearby)
0x08-0x0B	Location ? (Once again, matches up nicely)
0x0C-0x0F	Padding? (Always seems to be 0)

Subcommand 0x2D

Subcommand 0x2D (size 0x01) is used to tell other clients that someone has finished talking to an NPC. It contains no data of its own, beyond the normal header.

Subcommand 0x3E

Subcommand 0x3E (size 0x06) is used to tell other clients that someone has stopped moving.

Bytes	Meaning
0x00-0x01	??? (Always seems to be 0)
0x02-0x03	???
0x04-0x07	Always seems to be 0
0x08-0x0B	Location?
0x0C-0x0F	Always seems to be 0
0x10-0x13	Location?

Subcommand 0x3F

Subcommand 0x3F (size 0x06) seems to be used to tell other clients that someone is not moving after warping, or something like that (triggered when going into the principal warp or after talking to the medical center, for instance). Seems to be used a lot of the time nearby a bunch of subcommand 0x55 packets.

Bytes	Meaning
0x00-0x01	Always seems to be 0?
0x02-0x03	??? (when near a subcommand 0x55, matches with bytes 0x00-0x01 in that?)
0x04-0x07	Always seems to be 0
0x08-0x0B	??? (when near a subcommand 0x55, matches with bytes 0x10-0x13 in that?)
0x0C-0x0F	???
0x10-0x13	??? (when near a subcommand 0x55, matches with bytes 0x18-0x1B in that?)

Subcommand 0x40

Subcommand 0x40 (size 0x04) is used to tell other clients that someone has started moving (or is moving slowly?).

Bytes	Meaning
0x00-0x07	??? (Maybe location and heading?)
0x08-0x0B	Padding? (Always seems to be 0)

Subcommand 0x42

Subcommand 0x42 (size 0x03) is used to tell other clients that someone is moving (quickly?).

Bytes	Meaning
0x00-0x03	Location?
0x04-0x07	Location?

Subcommand 0x52

Subcommand 0x52 (size 0x03) is used to tell other clients that someone is talking to a person at a desk of some sort or has just finished talking to the desk.

Bytes	Meaning
0x00-0x03	??? (Always seems to be 0x000000A0)
0x04-0x07	Location? (Matches fairly well with bytes from packets nearby)

Subcommand 0x55

Subcommand 0x55 (size 0x08) is used to tell clients that someone has warped (maybe?). Several of these seem to be sent at a time (at least when going into and out of the principal's warp).

Bytes	Meaning
0x00-0x01	??? (Matches with nearby subcommand 0x3F's bytes 0x02-0x03)
0x02-0x03	Always seems to be 0?
0x04-0x07	???
0x08-0x0B	???
0x0C-0x0F	???
0x10-0x13	??? (Matches with nearby subcommand 0x3F's bytes 0x08-0x0B)
0x14-0x17	Seems to be 0
0x18-0x1B	??? (Matches with nearby subcommand 0x3F's bytes 0x10-0x13)

Subcommand 0x5F

Subcommand 0x5F (size 0x0B) is used to tell clients what item dropped from an opened box.

Bytes	Meaning
0x00	Area of the Drop
0x01	What kind of thing are we asking about?
0x02-0x03	Request ID (might only be one byte)
0x04-0x07	X Coordinate
0x08-0x0B	Y Coordinate
0x0C-0x0F	Unknown (0x00000010 works)
0x10-0x1B	Item Code (first 3 32-bit values)
0x1C-0x1F	Unknown -- (request_id | 0x06010100) seems to work
0x20-0x23	Item Code (last 32-bit value)
0x24-0x27	Unknown (0x00000002)

Subcommand 0x75

Subcommand 0x75 (size 0x02) kinda baffles me a bit... The field used normally for the client ID that triggered the event isn't used that way here (at least it doesn't look like it -- all the times I saw it while I was doing some testing, the client ID part was 0x4D). The only thing I can guess is that its used to set some sort of global flags in the game (since it seems to be used when the NPCs change their dialog when you talk to them).

Bytes	Meaning
0x00-0x03	??? (Flags maybe?)