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Net: Steam lobby (btl4lobby) + launch-mode wiring (Workstream C.2)

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Port RP412's RPL4LOBBY to BT: an ISteamMatchmaking room stands in for the
arcade Site-Management screen. Compiled both gates -- stubs without
BT412_STEAM, the full room under it (both configs build + link clean).

Lobby (game/reconstructed/btl4lobby.*):
- Room screen (green-on-black, like the menu), owner = console.
- Member data: FakeIP + fake console/game ports + persona + mech/color/badge
  (ip/cp/gp/nm/vh/cl/bd keys).
- Nonced "go" launch roster -> SteamNetTransport_RegisterPeer for every peer.
- Push/PullRaceResults over lobby data rebuild the shared score sheet.

Front end (btl4fe.*): HOST/JOIN buttons when BTLobby_Available() (Steam
transport up); the menu loop exits on a steam action and BTFrontEnd_Run
routes the lobby outcome -- host builds the egg with every member as a
[pilots] mesh entry (BTFrontEnd_SetHostedPilots), member returns launch
mode 2. Results screen prefers the marshal's collated result names.

Marshal (btl4console.*): add GetResultName / ClearResults / InjectResult so
the lobby owner can refill the sheet from the collated wire scores; Result
gains a name field.

WinMain (btl4main.cpp): install the Steam transport on BT412STEAM env
(before the front end, so the lobby is offered); branch on
BTFrontEnd_LastLaunchMode() -- host owns the marshal clock + joins the mesh,
member enters as a network pod on :1501 (SetNetworkCommonFlatAddress +
gConsoleLossEndsMission); Push (host) / Pull (member) results, then relaunch.

CMake: btl4lobby.cpp joins bt410_l4; that lib gets BT412_STEAM + the
Steamworks include under the gate. build-steam/ gitignored.

Deferred (untestable here -- needs Steam + multiple machines): the
host->member wire egg-feed marshal (InstallNetworkRace); a member currently
waits for a console connection nothing supplies, so a live host+member race
is blocked on it. The lobby object does not survive the per-mission
relaunch. docs/STEAM-3-MACHINE-TEST.md for BT not yet authored.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Cyd
2026-07-16 23:18:36 -05:00
co-authored by Claude Opus 4.8
parent 2f5870e486
commit a2949166ea
12 changed files with 769 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files
game/reconstructed/btl4fe.hpp
+20
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@@ -76,4 +76,24 @@ int BTFrontEnd_LastMissionSeconds();
// Show the post-mission scoreboard (marshal snapshot) until dismissed.
void BTFrontEnd_ShowResults();
//---------------------------------------------------------------------------//
// Steam lobby glue (used by btl4lobby): the local pilot's loadout the lobby
// publishes as member data, and the hosted-pilot override the lobby feeds so
// the owner's egg carries every member as a pilot.
//---------------------------------------------------------------------------//
struct FEHostedPilot
{
char address[64]; // mesh (game-port) address for [pilots]
char name[32];
char vehicle[24];
char color[16];
char badge[24];
};
void BTFrontEnd_GetLoadout(char *vehicle, char *color, char *badge);
void BTFrontEnd_SetHostedPilots(const char *owner_address,
const FEHostedPilot *pilots, int count);
// The last LAUNCH's mode: 0 single-player, 1 lobby host, 2 lobby member.
int BTFrontEnd_LastLaunchMode();
#endif // BTL4FE_HPP