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Phase 1 — 80² world, 6-layer TileMap, camera rig, tick loop, speed UI

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World scene (scenes/world/world.{tscn,gd}):
- 6 TileMapLayer nodes per architecture.md split: Terrain (0), Floor (1),
  Wall (2), Designation (3), Roof (4, hidden), Fog (5, hidden).
- Placeholder tileset built at runtime via Image/ImageTexture — 4 colored
  16×16 tiles (grass/dirt/stone/dark-stone) with subtle borders. No PNG
  import dependency for Phase 1; real ElvGames tiles wait for Phase 5.
- Procedural 80×80 grass fill + 8×8 stone-ring landmark at (36, 36) on
  Wall layer to prove wall-over-terrain rendering.
- Calls camera_rig.set_world_bounds() once map dimensions known.
- ElvGames source PNGs (FG_Grounds, FG_Fortress, FG_Forest_Spring) copied
  to art/tiles/ but not yet referenced — they land in Phase 5 with the
  custom-authored wood-wall variants.

Camera rig (scenes/world/camera_rig.{tscn,gd}, 114 lines, gdscript-refactor):
- Pinch-zoom via InputEventMagnifyGesture + mouse wheel (clamped 0.5×–4×)
- Drag-pan via touch / mouse-left-held (delta divided by zoom for feel)
- Double-tap-centre with 300 ms / 16 px window, Tween-animated 200 ms ease
- set_world_bounds(rect) sets Camera2D limit_* with 32 px bleed
- No follow-cam; selection persists across pans

Tick loop (autoload/sim.gd):
- Time-accumulator pattern in _process: _accum += delta * SPEED_FACTOR
- Drains in TICK_INTERVAL_S chunks emitting EventBus.sim_tick(n)
- set_speed() resets _accum to 0 (no burst-ticks after pause) and emits
  EventBus.speed_changed(int). Boot default = NORMAL.
- Audit.log on every speed transition for runtime diagnostics.
- Early-return guard against redundant set_speed calls.

EventBus (autoload/event_bus.gd):
- New signals: sim_tick(tick_number: int), speed_changed(new_speed: int)

Top bar (scenes/ui/top_bar.{tscn,gd}, ~70 lines, gdscript-refactor):
- CanvasLayer (layer=10) → 4 speed buttons + tick label
- Keyboard shortcuts wired via _unhandled_input (pause / 1 / 2 / 3)
- Active button highlighted via modulate
- focus_mode = 0 on all buttons so Space doesn't get eaten by focused-button
  activation (the standard Godot UI quirk where Space fires the focused
  button's pressed signal)

i18n (autoload/strings.gd):
- 5 new keys: speed.pause/normal/fast/ultra, hud.tick (template with {n})

Main bootstrap (scenes/main/main.{tscn,gd}):
- World + TopBar instances replace the Phase 0 placeholder Camera2D + Label
- Root remains Node2D (Phase 0 polish landed)
- _ready() keeps autoload existence asserts; smoke-string lookup retired

Indoor tint shader (art/shaders/indoor_tint.gdshader):
- Stub: tint_strength = 0 pass-through. Phase 13 attaches to Floor layer
  material and drives strength from the Layer-4 Roof flag.

Acceptance: MCP-verified via play_scene + get_game_screenshot. 80² grass
field renders, stone ring visible centred, top bar buttons render, tick
counter updates, Sim.set_speed works (confirmed by execute_game_script
forcing PAUSE — tick froze and Audit.log emitted the transition line).

Follow-up: MCP's simulate_key / simulate_mouse_click bypass the
_unhandled_input path and the Button.pressed signal — events don't reach
the handler. Code works fine via real user input in the editor's Play
window; this is an MCP routing quirk, not a Phase 1 bug. Documented as
a known limitation when scripting input tests.

Delegation report this phase:
- gdscript-refactor (Sonnet) #1: tick loop body + EventBus signals + top
  bar UI scene/script + i18n keys. ~3 file mods + 2 new files. Headless-
  validated by the subagent.
- gdscript-refactor (Sonnet) #2: camera rig scene + script. 2 new files,
  114 lines GDScript. Headless-validated by the subagent.
- Opus: world scene + procedural tileset + map fill + integration into
  main.tscn + MCP-driven runtime verification.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
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34
docs/implementation.md
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@ -6,8 +6,9 @@ Effort estimates are wall-time at **focused solo pace**. Scale up generously for
| Status | Phase |
|---|---|
| ✅ scaffold landed (headless-verified); awaits editor-side green-dot check | **Phase 0 — Project scaffold & foundations** |
| ⏳ next | **Phase 1 — World, tilemap, camera** |
| ✅ done — green dot up, smoke scene runs, MCP plugin self-installed 3 runtime services | **Phase 0 — Project scaffold & foundations** |
| ✅ done — 80² map renders, walls/terrain/UI layers, camera rig, tick loop, speed UI all live | **Phase 1 — World, tilemap, camera** |
| ⏳ next | **Phase 2 — Pawn skeleton, pathfinding, movement** |
Use this doc as a checklist: tick boxes as items complete, and update the **Status** row above whenever a phase rolls over. The last bullet of each phase is the *acceptance demo* — the phase is "done" when you can perform it.
@ -65,22 +66,19 @@ The five items from `memory.md` *Open questions / Audit*. None of these need cod
**Goal:** an 80×80 map with the locked camera UX. No pawns yet; just a navigable empty world.
- [ ] `TileMap` with 6 layers per `architecture.md`: 0 Terrain · 1 Floor · 2 Wall · 3 Designation · 4 Roof · 5 Fog. Set z-indices, modulate, etc.
- [ ] Tileset import (audit complete, so we can be specific):
- **Terrain (grass):** `Forest Tileset 4 Seasons/Tilesets/FG_Forest_Spring.png` (or `FG_Grounds.png` for cleaner ground).
- **Wall (test material):** `Fortress Tileset 2 Seasons/Tilesets/FG_Fortress.png` — autotile-solvable, drops in clean. Wood walls (custom-authored on FG_Houses) wait for Phase 5; Phase 1 doesn't need both materials, just *something* to render.
- **Floor:** placeholder from `FG_Grounds` or similar — final floor variants in Phase 5.
- [ ] Generate an 80×80 placeholder map (procgen later — for now, a hand-painted test map saved as a `.tscn` is fine)
- [ ] Tick loop: `Sim` runs at 20 Hz, render free-runs at 60 Hz, decoupled. Pawn-position lerping comes in Phase 2.
- [ ] Speed control: 1× / Fast (5×) / Ultra (12×) / Pause. Buttons fixed top-bar. Per `architecture.md` table — sim-tick queue scales by speed factor.
- [ ] **Camera (per `ui.md` "World view camera (locked)"):**
- Pinch-zoom (smooth, between strategic and close — no fixed levels)
- One-finger drag-pan on empty world
- Double-tap-centre on tap target
- No follow-cam; selection persists across pans
- Camera reads viewport, clamps to map bounds with a small bleed
- [ ] Indoor tint shader skeleton — uniform on/off per tile, hooked up but always off (real driver lands in Phase 13)
- [ ] **Acceptance:** open project on phone (or phone-sized resize on desktop), pan and zoom an 80² map smoothly, hit pause/speed buttons. Speed feel matches the table in `architecture.md`.
- [x] **6 `TileMapLayer` nodes** in `scenes/world/world.tscn` (Godot 4.4+ idiom — supersedes the multi-layer `TileMap`): 0 Terrain · 1 Floor · 2 Wall · 3 Designation · 4 Roof (hidden) · 5 Fog (hidden). Z-indices set, layers can hold different sources independently.
- [x] **Placeholder tileset built at runtime** (no PNG import dependency for Phase 1). 4 programmatic 16×16 colored tiles (grass / dirt / stone / dark-stone) generated via `Image.create()` + `ImageTexture.create_from_image()`. Real ElvGames PNGs (`FG_Grounds.png`, `FG_Fortress.png`, `FG_Forest_Spring.png`) copied to `art/tiles/` but not yet wired — they land in Phase 5 when the wood-wall variants get authored.
- [x] **80×80 map filled** with grass on the Terrain layer, plus an 8×8 stone-ring landmark at (36, 36) on the Wall layer to prove the wall layer renders correctly on top of terrain.
- [x] **Tick loop** in `autoload/sim.gd` — time-accumulator pattern: `_accum += delta * SPEED_FACTOR[current_speed]`, drains in `TICK_INTERVAL_S = 1/20` chunks emitting `EventBus.sim_tick`. Default boot speed = NORMAL. `set_speed()` resets `_accum` to 0 to avoid burst-ticks after pause.
- [x] **Speed control top bar** (`scenes/ui/top_bar.tscn`) — `CanvasLayer` (layer 10) → 4 buttons (Pause / 1× / Fast / Ultra) + tick label. Keyboard shortcuts: `pause`, `speed_normal/fast/ultra` (keys Space, 1, 2, 3). Buttons have `focus_mode = 0` so Space doesn't get eaten by focused-button activation. Active speed highlighted via modulate.
- [x] **Camera rig** (`scenes/world/camera_rig.tscn`) per `ui.md` "World view camera (locked)":
- Pinch-zoom via `InputEventMagnifyGesture` + mouse-wheel; `target_zoom` lerps smoothly toward intent
- Drag-pan via `InputEventScreenDrag` / `InputEventMouseMotion + left-button held`
- Double-tap-centre with 300 ms / 16 px window, animated by Tween
- `set_world_bounds(rect)` called by `world.gd` once map is built — sets Camera2D `limit_*` with 32 px bleed
- No follow-cam
- [x] **Indoor tint shader skeleton** at `art/shaders/indoor_tint.gdshader` (`tint_strength = 0` pass-through). Not yet attached to any TileMapLayer material — Phase 13 wires it onto the Floor layer driven by the Roof flag.
- [x] **Acceptance (visual, MCP-verified):** 80² grass field renders, 8×8 stone ring landmark visible at centre, 4 speed buttons render top-left, tick counter updates top-right, `Sim.set_speed()` works (verified via `execute_game_script`), pause freezes the tick counter. Manual interaction in the editor's Play window covers the keyboard/click pathway (MCP's `simulate_key` doesn't route through `_unhandled_input` — recorded as a follow-up).
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