Slot Allocation

A slot ID is a numeric identifier assigned to each game host by the registry server. It is used to visually distinguish hosts and to track their lifecycle.

How Slots are Assigned

1. The game host calls registry.register with slotId = 1 as a placeholder.
2. The registry server assigns the actual slot ID and includes it in the BMRegistryInfo it broadcasts.
3. The game host receives its real slot ID via one of two push notifications:
   • onHostConnected: The host checks if the incoming BMRegistryInfo matches its own deviceId. If so, it adopts the slotId from the server's response.
   • onList: Similarly, the host scans the list for its own deviceId and reads the assigned slotId.

Slot ID Semantics

Value	Meaning
0	Not a host (controller). No host-specific fields are serialized. See BMRegistryInfo.
>= 1	Active game host. The value identifies the host's position in the registry.

Slot IDs are persistent for the duration of a host's session. When a host disconnects and a lower slot becomes available, new hosts do not backfill into the freed slot.

Slot Colors

Each slot ID maps to a color, cycling through 15 values. Both the game host and the controller display this color to help players visually identify hosts.

Slot	Color	Hex
1	Orange	#FF6900
2	Gold	#FED000
3	Hot Pink	#FF2C9B
4	Red-Pink	#FF0066
5	Purple	#D500FF
6	Olive	#969C00
7	Lavender	#9B96CE
8	Mint	#00CD97
9	Green	#009B00
10	Cyan	#00C9FF
11	Navy	#112F68
12	Lime	#8AFF00
13	Crimson	#D01300
14	Light Green	#76D061
15	Violet	#7400FF

For slot IDs above 15, the color wraps: colorIndex = (slotId - 1) % 15 + 1.