Brought onto the line with FSR 4, its frame generation and the debug menu. Where both sides had added to the same
place, both stay: the patch table keeps the pickup count and the free camera, the settings list keeps both sides'
names, the menu includes the co-op page and the debug menu, and the launcher builder takes the pipeline list and the
FSR 4 folder. Both sides had added the menu's typed-character event; one definition stays, with the window code that
passes characters outside the basic plane.
Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
With debug_menu = 1 (off by default; the Game tab has the switch) F9 opens a panel on the left edge in the
performance overlay's look, with the game in view beside it. ui/menu.cpp lays it out in the settings menu's place,
so its input and the game's blocked pad are the menu's own. Typed characters now reach the menu for its text fields.
Flags: the game's 11,292 on/off flags are read from its game data manager, and a click changes one through the
game's own function on the game's thread at its pad read (runtime/debug_tools.c dbg_tick), so the game applies it
at its next update as it does its own changes. The game knows a flag by the hash of its name only; the names shown
are found in the player's own event flow files, hashed and matched when the panel first opens (2,250 of them from
915 files in 0.2 s), and none is kept in the code. World: Link's position, and a speed factor from 0.05 to 8 that
multiplies the step the runtime gives the game each frame (measured 0.50 at 0.5x). Memory: a search of the heap
for a value of 1, 2 or 4 bytes or a float (about 2 s), narrowed by equals, changed, unchanged, went up or went
down, with a value to set at a place or to hold there every frame.
Tested through the window's own messages: F9 opened it, a click on a flag set that flag in the game, text typed
into the filter narrowed the list, and F9 closed it; a scripted run set and held a value and put it back.
Teleporting, a free camera and starting cutscenes are not in it: writing Link's position, or every copy of it in
the heap, moved him back within three frames, so they need the game's own warp, scene-change and event functions.
Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
Each player keeps their own game and save. One player makes a room, the others join it with its secret, and story flags and, by the room's rules, items, songs, quest items, small keys (a shared pool), rupees and ammunition reach every save. The layer is a host thread with one UDP socket to a relay the players run themselves (tools/coop_relay.py, Python's standard library only); the messages between the players are sealed with a key from the room's secret (XChaCha20-Poly1305, Monocypher 4.0.2 vendored with its licence and a row in THIRD_PARTY_NOTICES.md), every change is signed by the player who made it, a player accepts a room by its members' keys and the key of its rules, the save is copied to coop-backup before anything is applied, and values are set through the game's own routines between frames. The Co-op tab makes, joins, accepts, removes and leaves, and the menu takes typed text for the name, the relay and the secret. This is the contributor's pull request #518 on this line.
Nothing reaches the network while co-op is off: the socket is opened, and the relay's name looked up, only after co-op is on, a relay is set and a room is made or joined. There is no default relay.
Left out of the pull request: the other players drawn in the world (the "puppets") with the copied engine they need. They were unfinished, added two patch sites to the game's per-frame update that could not be put through the differential tests here, and their file helpers clashed with the ones this line already has. So no position is sent: the POS message's codec stays, nothing sends it.
Changed against the pull request:
- The menu's test hook drives the Co-op tab only when it comes from the environment. From nx2navi.ini it could turn co-op on, join a room and accept its offer.
- The log's label for a room is hashed from the secret instead of being its first three characters.
- A game that has not saved yet has no save to copy, and takes nothing from the room until it has saved once; that used to count as a copy made.
- A PING's token no longer carries the PC's uptime.
- On Windows the maker's key file and its folder get an access list with the player's account alone.
- The tests that link the platform layer get the socket library, and the save test a stand-in for the title screen's hook.
Checked on Windows, where the pull request had never been compiled: the runtime builds and links; --probe-coop passes (sockets on 127.0.0.1, the codec against its byte vectors, a fuzz of every parser, two sessions through a hostile mock relay, a relay restart, the sync engine); tests/coop_relay_test.py passes its 61 tests, with the probe through the real relay on 127.0.0.1 at 0 and 30 % loss; tests/coop_page_check.py passes and its deliberate fault fails 48 checks. Not checked: two games in one room (one game runs at a time here), any real network, the tab in the game.
Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
- A GPU index or name that is not usable, or no longer there, falls back to the best usable GPU with a log line instead
of stopping the game before the menu can change it (vk_device.c pick_device).
- A held Esc no longer opens the menu and closes it again on its first key repeat (menu_win.cpp, menu_sdl.cpp).
- The menu does not open on the boot screen, where it was not drawn while its keys queued up and changed settings once
the game ran.
- The DLSS render scale follows the upscaler that runs: a DLSS or FSR 3.1 mode picked in the menu, which applies after
a restart, or DLSS where NGX is not available, no longer shrinks the scene with nothing to scale it back up.
- Upscaling without DLSS or FSR 3.1 also turns frame generation off, which needs their motion vectors.
- The HDR peak brightness slider reaches the setting's 10000 nits.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
