feat: 3D cockpit challenge camera + landing-point reticle (v0.6.14.0)

[kenlacroix]

Summary

A first-person cockpit view for 3D mode — the 4th angle in the C cycle (chase → orbital → low → cockpit). Deliberately a challenge camera, not the default: from inside the lander you can't see your own attitude, and 3D foreshortening already makes precision landing harder. So it ships with the thing that makes it landable.

The skill aid: Landing-Point Designator

A world-space ground reticle showing where you'll touch down if you cut thrust now — ballistic projection from current position + velocity under gravity, refined against the terrain height at the predicted spot. The ring is green over a pad, amber off it. Fly by steering the marker onto the pad. (Apollo had the same idea — the LPD grid in the LM window.)

Details

• Cockpit camera — at the lander, rolls with the craft (banking is felt), looks down-forward into the terrain depth; LM mesh hides. A camera-fixed boresight gives a stable aim reference while the world tilts around it for attitude feedback.
• IGameplayRenderer.setEffectiveGravity?(g) — optional; Game feeds gravityPreset.gameGravity so the LPD predicts correctly on alt-gravity worlds (Europa/Titan/sandbox). Canvas/WebGL omit it.
• Live flight defaults to chase; the land/crash beat still pulls to the orbital shot.

Verification

• tsc + biome clean (new/edited files) · vite build succeeds · 602/602 tests pass.
• ⚠️ Camera/reticle need a live WebGL context (not jsdom-testable). Confirm on the preview with ?renderer=3d → press C to reach cockpit; check the LPD tracks and recolors over pads.

Follow-up polish (deferred, in TODOS)

Window-frame vignette and a synthetic attitude indicator (roll currently reads from the world tilting).

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View logs

[kenlacroix]

Follow-up: v0.6.15.0 — cockpit polish

Added the two follow-ups flagged in the v0.6.14.0 CHANGELOG note, addressing the "you can't see your own attitude from inside" tension:

• Window-frame vignette — camera-fixed porthole darkening the periphery, so the view reads as inside the lander.
• Synthetic attitude indicator — artificial-horizon gauge at bottom-center; the horizon bar counter-rotates with the craft roll and the reference reddens once bank exceeds the 10° landing gate.

Verified in-browser on ?renderer=3d (press C ×3 to cockpit): gauge is level/green at 0°, tilts and turns red when banked past 10°. Typecheck, build, and 602 tests pass.