Protocol:Packet 0x07
The server sends Packets 0x07 and 0xA0 to communicate either a ship or block list to the client. The Sylverant Login Server always sends Packet 0x07 for the purpose of communicating the ship list, but the Ship Server uses 0xA0 for this purpose. This seems to be how other PSO servers implement the functionality, so I went for uniformity (either packet will probably work in either situation). Block lists (only communicated by the Ship Server) always use type 0x07.
The lobby information desk item list sent to clients by the ship server is sent as Packet 0x1F, and follows this same format.
The clients send Packet type 0xA0 to request the ship list when already on a ship. The server will then respond with a Packet 0xA0 generally (as mentioned above).
Dreamcast Packet Format (Server->Client)
| Bytes | Meaning |
|---|---|
| 0x00 | Packet Type (0x07, 0x1F, or 0xA0) |
| 0x01 | Flags (Number of Entries) |
| 0x02-0x03 | Packet Size (Variable) |
| 0x04... | Ship/Block/Item Information (see below for format) |
Information Format
The information field is populated as follows (offsets are relative):
| Bytes | Meaning |
|---|---|
| 0x00-0x03 | Menu ID (0x00000005 for Ship select, 0x00000001 for Block Select, 0x00000000 for the lobby list) |
| 0x04-0x07 | Item ID (The item in the list) |
| 0x08-0x09 | Flags (0x0004 for the phantom ship entry, 0x0000 for all others) |
| 0x0A-0x1B | Ship/Block/Info Desk Item Name |
Phantom Ship Entry
For a ship select, the phantom entry is as follows:
| Menu ID | 0x00000005 |
| Item ID | 0x00000000 |
| Flags | 0x0004 (make invisible?) |
| Ship/Block/Info Name | "DATABASE/JP" (and set the last byte of the field to 0x08) |
Phantom Block Entry
For a block select, the phantom entry is as follows:
| Menu ID | 0x00000001 |
| Item ID | 0x00000000 |
| Flags | 0x0000 |
| Ship/Block/Info Name | The name of the Ship (with the second to last byte set to 0x08) |
Phantom Info Desk Entry
For the info desk list, the phantom entry is as follows:
| Menu ID | 0x00040000 |
| Item ID | 0x00000000 |
| Flags | 0x0000 |
| Ship/Block/Info Name | The name of the Ship (with the second to last byte set to 0x08) |
Dreamcast Packet Format (Client->Server)
| Bytes | Meaning |
|---|---|
| 0x00 | Packet Type (0xA0) |
| 0x01 | Flags (0x00) |
| 0x02-0x03 | Packet Size (0x0004) |
