docs: convert all architecture .adoc sections to markdown, prettier-format all .md

- Converted 13 individual .adoc section files to .md via asciidoctor→docbook5→pandoc(gfm) + post-processing, placed alongside the .adoc sources in Docs/Architecture/ - Rebuilt architecture.md from the individual section .md files - Ran prettier --write on all .md in the repo (23 files changed): normalised table column alignment, trailing whitespace, line breaks - Added .agents/ to .prettierignore (vendored third-party content) - All .md now passes prettier --check
2026-11-08 13:33:44 +01:00
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+# Building Block View
+
+## Whitebox Overall System
+
+The system decomposes into five top-level building blocks:
+
+| **Name** | **Responsibility** |
+| --- | --- |
+| Gameplay | Player pawn, movement, camera, input bindings, HUD, game mode |
+| Site | Terrain, road, sidewalks, kerbs, crossing markings, site-level collision |
+| Façades | Hero façade (El Capitan), south block frontage, north-side buildings |
+| Art Pipeline | Blender models, geographic data, export scripts, import scripts |
+| QA & Review | Screenshot pipeline, self-test harness, visual review workflow |
+
+### Gameplay
+
+C++ classes in `Game/GigLine/Source/GigLine/`:
+
+| Class | Responsibility | Key detail |
+| --- | --- | --- |
+| `AGigLineCharacter` | First-person player pawn | 1.75 m capsule, 4.5 m/s walk, Enhanced Input bindings, reset, pause, `-qaselftest` harness |
+| `AGigLineGameModeBase` | Sets game mode and HUD class | `HUDClass = AGigLineHUD` |
+| `AGigLineHUD` | ODbL attribution overlay | `DrawText` every frame, bottom-left |
+| `AGigLineNPCPerson` | NPC prefab (future) | Capsule + visible MPFB body, feet on Z 0 |
+| `AGigLineShotActor` | Screenshot camera walker | Drives cameras in `-game` mode, `FScreenshotRequest`, quits |
+| `UGigLineAssetTools` | C++ collision helpers | `SetComplexCollisionAsSimple` on `StaticMesh` assets |
+
+Input assets in `/Game/Input/`: `IA_Move`, `IA_MoveBack`, `IA_Strafe`, `IA_StrafeLeft`, `IA_Look`, `IA_Jump`, `IA_Reset`, `IA_Pause`, bound in `IMC_Default`.
+
+### Site
+
+Static meshes and materials in `/Game/Hollywood/Site/`:
+
+| Asset | Role |
+| --- | --- |
+| `Terrain_DEM` | Ground heightfield (complex-as-simple collision) |
+| `Road_Hollywood` | Carriageway surface (block-all collision) |
+| `Sidewalk_North`, `Sidewalk_South` | Pedestrian surfaces (block-all collision) |
+| `Kerb_North`, `Kerb_South` | Kerb edges |
+| `Crossing_Markings` | Zebra markings at signalised crossing |
+| `M_Asphalt`, `M_Concrete`, `M_KerbConcrete`, `M_Ground`, `M_RoadPaint`, `M_Stucco`, `M_FacadeStone` | Procedural materials (world-space-noise blend + roughness) |
+
+### Façades
+
+| Asset | Role |
+| --- | --- |
+| `SM_HeroFacade` | El Capitan Entertainment Centre detailed façade |
+| `SM_ElCapitanTheatre`, `SM_Budget_6822`, `SM_Hollywood_6806`, `SM_Hollywood_6902`, `SM_Hollywood_6922`, `SM_LeeDrug_6800` | South block frontage (6 buildings) |
+| `SM_Madame_Tussauds`, `SM_TCL_Chinese_Theatre` | North-side buildings (within 50 m) |
+
+### Art Pipeline
+
+Python scripts in `Tools/` drive the content pipeline:
+
+| Script group | Purpose |
+| --- | --- |
+| `export_*`, `hero_facade_build` | Blender headless export (FBX) |
+| `ue_import_*`, `ue_hero_facade_import` | Unreal headless import + placement |
+| `ue_build_demo_map`, `ue_build_review_map` | Map assembly (lighting, meshes, player start) |
+| `ue_create_input_assets` | Enhanced Input actions + mapping context |
+| `render_screenshots.sh` | Screenshot capture pipeline |
+| `judge_screenshot.py` | Vision-model pre-check (optional) |
+
+Source data: `Art/blender/` (`.blend` files), `Geo/` (OSM extracts, DEM, verification docs).
+
+### QA & Review
+
+- `AGigLineShotActor` walks fixed cameras in `-game` mode, captures PNGs, and quits.
+
+- `-qaselftest` switch on `AGigLineCharacter` runs a core-ticker harness: walk 2 s, reset, pause/unpause, ground transect — all PASS/FAIL logged.
+
+- `Screenshots/` holds committed PNGs and `README.md` approval table.
+
+## Level 2
+
+### White Box Gameplay — Input Flow
+
+1.  `AGigLineCharacter::SetupPlayerInputComponent` binds `IA_*` actions to `MoveForward`, `MoveBack`, `MoveStrafe`, `MoveLeft`, `Look`, `StartJump`/`StopJump`, `ResetToStart`, `TogglePause`.
+
+2.  Movement delegates to `ApplyMove(Forward, Strafe)` → `AddMovementInput`.
+
+3.  Look applies yaw/pitch scaled by `LookSensitivity` (Y invertable via `bInvertLookY`).
+
+4.  `ResetToStart` teleports to `StartLocation` (captured on first grounded frame), clears velocity, resets control rotation.
+
+5.  `TogglePause` toggles `APlayerController::SetPause`, swaps input mode between `FInputModeGameOnly` and `FInputModeUIOnly`, shows/hides mouse cursor.
+
+### White Box Site — Collision Model
+
+- Every site mesh (road, sidewalks, kerbs, crossing) is `STATIC` with `BlockAll` collision.
+
+- `Terrain_DEM` uses `CTF_UseComplexAsSimple` (forced by `UGigLineAssetTools` at build time, saved on the asset).
+
+- The terrain corridor is carved to half-width 10.7 m around the road centreline so the player can walk the carriageway and both sidewalks.
+
+- Ground Z: north sidewalk 395, road 366, south sidewalk 317 (3.94 m fall along the block, matching the DEM).