GameSim snapshots the state before each undoable command
(PlacePiece / RemovePiece / MovePiece) into a bounded LinkedList stack
(max 32). Undo() pops the last checkpoint and emits StateRestoredEvent,
reusing the presentation rebuild path already wired for QuickLoad.
Ctrl+Z in Main triggers the engine method; the harness exposes undo()
for tests. QuickLoad clears the stack (fresh timeline). Seven unit tests
cover empty stack, place/remove/move undo, reverse-order multiple undos,
rejected commands not checkpointing, and post-simulation rewind.
BoardState.CaptureSave/RestoreFromSave deep-copy every mutable field
(grid, pieces, demands, transformers, buffers, stock, campaign progress)
into a WorldSave slot. GameSim.QuickSave/QuickLoad expose slotted saves
and emit StateSavedEvent / StateRestoredEvent — the latter carries a
fresh BoardSnapshot so the presentation can rebuild board, pieces,
trajectories, objectives, stock, camera, and control bar in one pass.
F5/F9 trigger it in Main; harness gains quick_save/quick_load commands so
UI tests can checkpoint a scenario and resume without replaying from
scratch. Seven xUnit tests cover the roundtrip (including independence
from post-save mutations, campaign state, and multi-slot isolation).
Bundles in-flight work on the campaign/missions system (CampaignDef,
MissionDef, TerrainPatch, TransformerDef, MissionChecker, CampaignLoader,
FlavorBanner, transformer rules), plan files, and matching tests. Baseline
commit so the upcoming automation testing harness lands on a clean tree.
Dame (Queen):
- Moves 1-2 cells in all 8 directions (orthogonal + diagonal)
- Social status 7 (highest — priority over all other pieces)
- Deep burgundy color, letter "D"
- Rare and powerful, forces strategic placement choices
Levels:
- Level 7 "La Dame Blanche": 10x10, walled arena with central fortress,
1 queen available as a logistics superweapon
- Level 8 "Le Grand Reseau": 12x10, 4 productions + 4 demands,
two vertical wall corridors, 2 queens, full network challenge
GDD updated with Dame section and status hierarchy.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Pion (Pawn): orthogonal range 1, social status 1 (lowest), green color
- All existing levels get surplus stock including pawns for player choice
- Level 4 "Le Carrefour": 8x8, dual cargo diagonal routes, center wall block
- Level 5 "Le Labyrinthe": 8x6, wall corridors, knights essential for shortcuts
- Level 6 "Trois Royaumes": 10x8, 3 productions + 3 demands, full network puzzle
- Production interval concept removed (all produce every turn)
- GDD updated with Pion section and 6 level descriptions
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- New turn order: produce -> transfer -> move -> collision resolution
- Collisions now destroy weaker pieces (status > level > mutual destruction)
instead of halting the simulation. SimPhase.Collision removed.
- Add piece Level property (all level 1 in proto, prepared for future)
- Production fires every turn (interval concept removed), buffer = Amount
(default 1, future 2-4), leftovers overwritten each turn
- Transfer tiebreaker: status > level > clockwise direction (alternating
even/odd turns in y-up coords), replaces distance-to-production
- Demands always accept matching cargo even when already satisfied
- TurnNumber added to all turn events for animation grouping
- Simultaneous animations: produce flash, cargo slide, parallel piece moves
- Camera centering fix + middle-click pan
- GDD updated with new rules + lore section added
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add CargoFilter property to PieceState, auto-assigned at placement
by tracing relay chain back to production. TransferResolver now
enforces cargo-type filtering and uses forward-direction sorting
with cargo-aware distance calculations. Prevents cross-route
contamination on multi-cargo boards.
Level 3 restored to dual-cargo (Wood+Stone) with correct 10R+2K stock.
Two new solvability tests validate filter auto-assignment and chain
propagation. All 60 tests green.
- Fix cargo bouncing in relay chains: piece-to-piece transfers now prefer
receivers farther from production (forward flow) instead of closer (backward)
- Level 2 stock corrected: 4R+1B → 6R+1B to match required solution
- Level 3 simplified to single cargo type (6R+1K) — dual-cargo on 6x6
requires engine support for cargo-type filtering (Phase 2)
- Add PLAN.md with prototype roadmap (phases 2-6)
- 57 tests passing
Black box sim engine (commands in, events out) with 3 piece types
(Rook, Bishop, Knight), cargo transfer system with social status
priority, collision detection, and victory/defeat conditions.
57 tests covering rules, simulation, loading, and solvability.
Godot 4 presentation layer scaffolding.
