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 0x05

Subcommand 0x05 (size 0x03) seems to have something to do with when gates unlock (from switches anyway) or something... The client ID field has something strange in it, and the normally unused byte after it seems to be used for something...

Bytes	Meaning
0x00-0x03	All zeroes?
0x04-0x07	???

Subcommand 0x07

Subcommand 0x07 (size 0x11) is used for symbol chat. The client ID field in the header always seems to be zero, which means it must be carried somewhere in the data (I'm guessing its the first byte of the data).

Bytes	Meaning
0x00	Client ID of initiator?
0x01-0x03	Unused? (zeros in my testing)
0x04-0x3F	Symbol chat data (no idea of the specific format)

Subcommand 0x0A

Subcommand 0x0A (size 0x03) seems to be used when a hit lands on an enemy. The client ID and normally unused fields in the header are actually used for something here (I think they're the ID of the enemy, maybe).

Bytes	Meaning
0x00-0x07	???

Subcommand 0x0B

Subcommand 0x0B (size 0x03) seems to be used to make a box explode. The Client ID and unused fields in the header are actually used here for something else... I think they may be the ID of the box that was hit (they match part of the 0x46 subcommand about the attack).

Bytes	Meaning
0x00	Always 1?
0x01-0x03	Always 0?
0x04	The same as the Client ID byte in the header?
0x05-0x07	Always 0?

Subcommand 0x1F

Subcommand 0x1F (size 0x02) is used when someone moves to a different map. It matches Subcommand 0x21 exactly from what I've seen...

Bytes	Meaning
0x00	Area warped to
0x01-0x03	Unused? (all zeroes)

Subcommand 0x21

Subcommand 0x21 (size 0x02) is used when someone moves to a different map. It is followed by a subcommand 0x22, as well as a 0x3F, 0x1F, and 0x23.

Bytes	Meaning
0x00	Area warped to
0x01-0x03	Unused? (all zeroes)

Subcommand 0x22

Subcommand 0x22 (size 0x01) seems to tell clients that someone has finished moving to another map (I think). It has no data beyond the normal header.

Subcommand 0x23

Subcommand 0x23 (size 0x01) matches Subcommand 0x22 in every way, and comes after an 0x1F. It has no data beyond the normal header.

Subcommand 0x25

Subcommand 0x25 (size 0x03) is used tell clients that an item has been equipped.

Bytes	Meaning
0x00-0x03	The Item ID (in the user's inventory) of the item being equipped
0x04	The type of item being equipped? (1 for mag, 2 for frame, 3 for barrier, 6 for weapon)
0x05-0x07	Padding?

Subcommand 0x26

Subcommand 0x26 (size 0x03) is used to tell clients that an item has been unequipped.

Bytes	Meaning
0x00-0x03	The Item ID (in the user's inventory) of the item being equipped
0x04-0x07	Padding?

Subcommand 0x2A

Subcommand 0x2A (size 0x06) is used to tell clients that an item has been dropped by a player from their inventory.

Bytes	Meaning
0x00-0x01	Always seems to be 0x0001
0x02-0x03	Area where the item was dropped
0x04-0x07	The Item ID (from the user's inventory) of the item being dropped
0x08-0x0B	X Position?
0x0C-0x0F	Y Position?
0x10-0x13	Z Position?

Subcommand 0x2C

Subcommand 0x2C (size 0x05) is used to tell other clients that someone is talking to an NPC. This command also seems to come up while dropping items...

Bytes	Meaning
0x00-0x01	??? (Always seems to be 0xFFFF for NPC talk, 0x0384 for dropping items)
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. This command also shows up while dropping items.

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 0x43

Subcommand 0x43 (size 0x02) is used when the first step of a normal attack is in progress.

Bytes	Meaning
0x00-0x01	Direction? (Matches bytes 0x02-0x03 in a nearby Subcommand 0x3E)
0x02	0 for normal attack, 1 for heavy attack
0x03	Padding?

Subcommand 0x44

Subcommand 0x44 (size 0x02) is used when the second step of a normal attack is in progress.

Bytes	Meaning
0x00-0x01	Direction? (Matches bytes 0x02-0x03 in a nearby Subcommand 0x3E)
0x02	0 for normal attack, 1 for heavy attack
0x03	Padding?

Subcommand 0x45

Subcommand 0x45 (size 0x02) is used when the third step of a normal attack is in progress.

Bytes	Meaning
0x00-0x01	Direction? (Matches bytes 0x02-0x03 in a nearby Subcommand 0x3E)
0x02	0 for normal attack, 1 for heavy attack
0x03	Padding?

Subcommand 0x46

Subcommand 0x46 (size 0x02 or 0x03) is used when a step of an attack is finished.

In its 0x02 sized form:

Bytes	Meaning
0x00-0x03	Always zero?

In its 0x03 sized form:

Bytes	Meaning
0x00	Number of items hit? (I've only seen 1, but I've only hit one thing to see it)
0x01-0x03	All zeroes?
0x04-0x05	The item it hit? (same as the client ID and normally unused bytes in the header of Subcommand 0x0B)
0x06-0x07	All zeroes?

Subcommand 0x47

Subcommand 0x47 (size 0x02 or 0x03) is used when casting a technique. Its possible that it could be other sizes if multiple things were hit (I haven't tested this theory). It is always followed by a Subcommand 0x48. With healing spells, somehow its not mentioned what it affected... Also, I don't know how to tell what was hit if multiple things were hit...

Bytes	Meaning
0x00	Technique cast
0x01	Always zero?
0x02	Level of the spell, minus 1
0x03	1 if at least one thing was hit
0x04-0x05	ID of first item hit?
0x06-0x07	All zeroes?

Subcommand 0x48

Subcommand 0x48 (size 0x02) is used after a technique has been cast.

Bytes	Meaning
0x00	Technique cast
0x01	Always zero?
0x02	Level of the spell, minus 1
0x03	Always zero?

Subcommand 0x4A

Subcommand 0x4A (size 0x01) seems to be related to enemies attacking and the character evading. It carries no data beyond the normal header.

Subcommand 0x4C

Subcommand 0x4C (size 0x04) seems to be related to enemies landing a hit.

Bytes	Meaning
0x00-0x01	Same as 0x3F after the fact (bytes 0x02-0x03)
0x02-0x03	???
0x04-0x0B	???

Subcommand 0x50

Subcommand 0x50 (size 0x02) has something to do with switches (I think?)

Bytes	Meaning
0x00-0x01	??? (The same as bytes 0x02-0x03 in a nearby Subcommand 0x3E/0x3F)
0x02-0x03	All zeroes?

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 0x5D

Subcommand 0x5D (size 0x0A) is used to tell clients that someone has split up a stack of items (for dropping one or more).

Bytes	Meaning
0x00-0x03	Unused? (Always seems to be zero)
0x04-0x07	???
0x08-0x0B	???
0x0C-0x0F	Item Data dword 1
0x10-0x13	Item Data dword 2
0x14-0x17	Item Data dword 3
0x18-0x1B	New Item ID for split stack
0x1C-0x1F	Item Data 2
0x20-0x23	Always 0x00000002?

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 0x67

Subcommand 0x67 (size 0x04), I have no idea about at all. The Client ID and unused fields after it in the header are odd here... I really don't have a clue what this packet is for.

Bytes	Meaning
0x00-0x0B	???

Subcommand 0x74

Subcommand 0x74 (size 0x08) is used for Word Select. Some day, I'll document this further.

Bytes	Meaning
0x00-0x1B	Word Select data

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. I really have no idea how this packet is used, as I've seen it in a couple of different situations. The first situation I saw it in was NPCs that change their dialog. The second situation I saw it in was in warping down to Ragol...

Bytes	Meaning
0x00-0x03	???

Subcommand 0x8D

Subcommand 0x8D (size 0x02) seems to be related to starting to cast a technique.

Bytes	Meaning
0x00-0x03	Always 0?