goldeneye-pc-port/docs/dev/D357-SETTINGS-VALUES-PLAN.md

D357 — Settings thresholds & values: align display units/defaults with the PD port + Turok PC

Status: PROPOSAL — awaiting sign-off (2026-09-27). Baselines: the PD port checkout (C:\Users\james\Source\Repos\pd_port, port/src/optionsmenu.c + input.c/video.c config registrations), the Turok PC (Nightdive) list from the maintainer's notes (docs/dev/notes/OPTIONS-MENU-PLAN.md §6 — taken from user notes, not checked independently), and the N64 watch (ground truth for the Bond.* rows only). Triggered by maintainer report: the current values are "a bit confusing".

Companion change landed with this doc's review: the dim per-file row tag is now "(profile)" (was "(save)"; user request, both UIs).

1. Problem

The D356 regroup fixed the layout; the values still mix three unit families with no consistent rule:

• raw internal units shown as-is: Input.MouseSensitivity (1–500, 100 = 1× — the "100" is a % of a 1.0 multiplier, not a count), Input.PadDeadzone (raw 0–30000, dispDiv=300 → "23%" but the step of 500 raw is 1.67 display-%, so the slider lands on 23, 25, 26…), Bond.Music/Bond.FX (0–32767, dispDiv=328, step 128 = 0.39 display-%);
• N64-era vocabulary on PC rows: texture filter "Nearest / Bilinear / 3-Point" (the N64 watch term for trilinear), "FOV scale %" instead of degrees;
• defaults that don't read as defaults: MSAA shows "4x" fine, but FpsCap 0–1000 with step 1 invites 117 FPS; Video.LodDistance default 150% vs DrawDistance 150% with a 25-step grid (100/125/150/175…).

The PD port is the house style to copy: per-stick sensitivity as a ±10 multiplier (default 1.0, negatives invert) (input.c:1537), mouse speed -30..30 (default 2.5), deadzone raw 0–32767 per stick+axis, rumble 0–1, MSAA as a 2x/4x/8x/16x dropdown, frame cap as "N FPS", volumes as 0–100 %. Turok's (user's list) conventions: single mouse sensitivity knob, per-section resets (landed, D356), master/sound/music volume trio (master still M3-backlog).

2. Principles

1. Display, don't rescale the world. Every change is port-only (row table, dispDiv/step/unit fields, value-text, kResetDefaults): no src/game change, and config storage units are kept wherever a change would migrate existing ini files (principle 3).
2. Human units in the value column: % on a 0–100 grid, × multipliers with 1.0 as the default, N FPS, Off/2x/4x/8x, Unlimited. A slider step must map to a whole display unit (the deadzone 1.67%-step bug is the canonical example to fix).
3. Ini stability: renaming a config key's storage unit is a migration. Where the plan needs it, register a new key (e.g. Input.PadDeadzonePct) and keep the old key as a read-once legacy alias — the D333 Input.AimMode→Input.AimStyle alias pattern (input.c:1962). Each migration gets a findings note.
4. kResetDefaults stays in lockstep with the config C initializers (D356 Gate E): every default change in this plan updates the table in optionsoverlay.c in the same commit; the GE_WSPROBE_RESET probe re-verifies.
5. Defaults = the config C initializers, never a new menu-only default.

3. Row-by-row audit & proposal

Current state from optionsoverlay.c rows[] + the configRegister* ranges (2026-09-27). "Display" = what the value column shows today.

INPUT

Row	Now (default · range · step · display)	PD port	Turok (notes)	Proposal
Mouse sensitivity	100 · 1–500 · 5 · raw 100	MouseSpeedX/Y float −30..30, def 2.5 (sign = invert)	single knob	Display as a × multiplier: keep storage (100 = 1.0×), value text %.1f× (v/100); range 10–300 (0.1–3.0×), step 10 (0.1×). Label stays "Mouse sensitivity".
Invert look (mouse)	Off/On	folded into the −/× sign of MouseSpeed	—	Keep On/Off (PD's negative-multiplier style is an alternative; a separate invert is simpler next to the × slider). Decision: confirm.
Aim style / Aim range	N64/Centred (PC) · PC/N64	— (GE-only, D337/D338)	—	Keep as-is (GE-specific; hiddenIfOn already sane).
Invert look (controller)	Off/On	sign of stick scale	—	Keep.
Stick deadzone	7000 raw · 0–30000 · 500 · ÷300 → 23% (1.67%-steps)	raw 0–32767 per stick+axis, DEFAULT_DEADZONE	MISSING	New key Input.PadDeadzonePct 0–100, step 1, default 23 (7000/30000×100); input.c scales back to raw at apply; old key becomes a legacy alias (principle 3). Display N% on a whole-% grid.
Trigger threshold	23 · 1–99 · 1 · %	— (GE extra)	—	Keep.

GAMEPLAY

Row	Now	Baseline	Proposal
Auto-aim / Sight / Look ahead / Ammo (profile)	Off/On (N64 watch 0/1)	N64 watch = ground truth	Keep; tag now reads (profile) (this doc's companion change).
Skip intro / No hit flash / All unlocked	Off/On	Turok: screen-shake/hit-flash family	Keep.
HUD scale	100 · 75–150 · 5 · %	—	Keep (whole-% grid already; range cap D226).

GRAPHICS

Row	Now	Baseline	Proposal
Anti-aliasing	1/2/4/8, def 4, shows None/2x/4x/8x, restart	PD dropdown 2x/4x/8x/16x, def 4x	Add 16x to the sequence (kMsaaSeq, range clamp 1–16) — SDL/GL supports it; PD has it. Decision: perf cost on mid GPUs (restart already flagged).
Texture filter	Nearest / Bilinear / 3-Point	PC convention: Nearest/Linear/Bilinear	Rename the enum names to Nearest / Linear / Bilinear (3-point is trilinear; the N64 term is the last one left on a PC row). Storage 0/1/2 unchanged.
Anisotropic filtering	4 · 1–16 · 1 · x	Turok 1–16	Keep; dim/disable when filter = Nearest (anisotropy only applies to filtered sampling) — hiddenIfOff-style guard, UI-only.
FOV scale	100 · 50–150 · 5 · %	Turok 3: 60–120° slider	Display in degrees: the 100% baseline is the N64 vertical FOV scaled to the port's widescreen math — value text N° (v/100 × baseline, 1 decimal); storage unchanged. Decision: degrees vs % (Turok uses degrees; % is the existing mental model — pick one, recommend degrees).
Native widescreen / Widescreen auto FOV / Crop overscan	Off/On	—	Keep.
Draw distance	150 · 100–400 · 25 · % (hidden under auto-FOV)	Turok: draw-distance row	Keep the % grid (25% steps read fine); step 25 → display already whole-%. No change.
LOD distance	150 · 25–400 · 25 · %	—	Keep; note default 150 vs DrawDistance 150 is intentional parity.

AUDIO

Row	Now	Baseline	Proposal
Music volume (profile)	32767 · 0–32767 · 128 · ÷328 → 0.39%-steps	Turok: 0–100%	step 128 → 328 (exactly 1 display-%; 32767/328 = 99.9 ≈ "100%"). Storage unchanged (N64 VOLUME_MAX semantics).
FX volume (profile)	same	same	same.
(master volume)	—	Turok trio	M3-backlog, out of scope (shape the section for it, D356 note).

VIDEO

Row	Now	Baseline	Proposal
Fullscreen	Off/On	Turok: window mode (borderless missing)	Keep; borderless = separate backlog item.
Resolution	action row (presets)	both	Keep.
VSync	On/Off	both	Keep.
Frame rate cap	60 · 0–1000 · 1 · Uncapped/N FPS	Turok: "up to 120 FPS" / uncapped	Preset grid: 0/30/60/120/144 (step = next preset, wraps to Uncapped); value text already N FPS/Uncapped. Decision: preset grid vs free 1-step (recommend presets; 117 FPS has no purpose).
Show FPS	Off/On	both	Keep.

4. Terminology

• Per-file row tag: "(save)" → "(profile)" (landed with this doc's review; frontoptions.c + optionsoverlay.c, both draw paths + comments).
• Open question for the maintainer: the front screen's top row still reads "Save file: File N" — rename to "Profile: File N" for consistency? (Not done; the save file is literally what's being chosen.)

5. Gates

1. Port-only per principle 1; the deadzone key migration (principle 3) is the only config-surface change and follows the D333 alias pattern.
2. kResetDefaults updated in the same commit as every default/range change; GE_WSPROBE_RESET (front + -level_33) re-run, all sections failures=0.
3. Build via build-pc-cmd.bat (the pi-shell MSYS env gap, D356 note).
4. Visual check owed (maintainer): front options screen + F10 in all five sections; the overlap fix from the same session (the level-1 save-file row no longer paints under the first content row).

6. Out of scope

• Key rebinding (Phase 4), master volume (M3), output-device selection, borderless window, per-axis controller sensitivity (PD-style four-knob — GE's one-knob design is D238/D304).
• Any src/game change; the N64 watch keeps its own values and wording.