The Protocool :3
1. The Protocol
- Connect via websocket to
wss://colonq.computer/bullfrog/api/channel/listen/model. - Every message is either a keyframe or a diff.
- All messages are compressed with gzip (i.e.
DecompressionStream("gzip")in the browser).
1.1. A keyframe is:
- The byte 0x00
- Then 64 rows
- Of 64 cells.
1.2. A diff is:
- The byte 0x01
- A big-endian 32-bit unsigned length value
- Then a number of mappings equal to that length
- A mapping is:
- An 8-bit X coordinate
- An 8-bit Y coordinate
- A cell
1.3. A cell is either a foreground or a background cell.
- A background cell is just the byte 0x00.
- A foreground cell is the byte 0x01 followed by:
- One unused byte
- One 8-bit red value
- One 8-bit green value
- One 8-bit blue value
- A 32-bit big-endian codepoint
- Then optionally a second character:
- If the next byte is 0x00, there is only one character.
- If the next byte is 0x01, then there is another 32-bit big endian codepoint