Rev 11: the maze has no wall at zero, and moving sectors carry everything

Relocate Sector could never land a sector west or north of the origin
— placements the physical game allows by simply sliding the whole map
across the table. The coordinate grid still cannot go negative, but
now it does not need to: a sector may land at negative coordinates
and the whole maze renormalizes, zero-anchoring on both axes (which
also pulls the maze snug when the origin corner is vacated, instead
of leaving a blank band). The client offers the new landings as ghost
slots on every side, verified slot-for-slot against engine truth.

The move also closes a real gap: remapState never carried creatures,
boobytrap tokens, glue, open safes, or dimensional warp tokens when a
sector relocated or rotated — they were left hovering at their old
coordinates. Sectors now carry everything standing on them. Both
changes ride rules rev 11; older ledgers replay their flaws intact,
as replay determinism demands.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/engine/test/sight-illusions-sectors.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { applyCommand, activePlayer, boardView, gameLos, sustainedOn, viewFor } from "../src";
+import { applyCommand, activePlayer, boardView, createGame, gameLos, sustainedOn, viewFor } from "../src";
 import { cellKey, edgeKey, type Cell } from "../src/board";
 import type { CardInstance } from "../src/cards";
 import { newGame, must, giveCard, toRound2, emptyNeighborCell } from "./helpers";
@@ -334,3 +334,105 @@ describe("6e card-face corrections", () => {
     expect(applyCommand(state, defender.id, { type: "counteract", instanceId: "wall-of-fire#WOF2" }).ok).toBe(false);
   });
 });
+
+describe("relocation past the origin (rules rev 11)", () => {
+  function rev11Game() {
+    const { state } = createGame({ playerIds: ["alice", "bob"], seed: 42, sets: ["basic"], deckRev: 11 });
+    return state;
+  }
+
+  it("a sector may land at negative coordinates — the maze renormalizes", () => {
+    let state = rev11Game();
+    const me = activePlayer(state);
+    const other = state.players.find((p) => p.id !== me.id)!;
+    const idx = state.board.placements.findIndex(
+      (p) => me.position.y >= p.origin.y && me.position.y < p.origin.y + 5,
+    );
+    const otherIdx = idx === 0 ? 1 : 0;
+    const otherOrigin = state.board.placements[otherIdx]!.origin;
+    // Land WEST of the other sector: x = otherOrigin.x - 5, likely negative.
+    const dest = { x: otherOrigin.x - 5, y: otherOrigin.y };
+    const otherPosBefore = { ...other.position };
+    const rel = giveCard(state, me.id, "relocate-sector");
+    state = must(state, me.id, {
+      type: "cast", instanceId: rel.instanceId,
+      target: { kind: "cell", cell: dest }, params: { cell: me.position },
+    });
+    // The maze zero-anchors: origins snug against both axes.
+    const origins = state.board.placements.map((p: { origin: Cell }) => p.origin);
+    expect(Math.min(...origins.map((o: Cell) => o.x))).toBe(0);
+    expect(Math.min(...origins.map((o: Cell) => o.y))).toBe(0);
+    // Everyone stands on a cell the reassembled board knows.
+    for (const p of state.players) {
+      expect(state.board.cells[cellKey(p.position)]).toBe(true);
+      expect(state.board.cells[cellKey(p.home)]).toBe(true);
+    }
+    // The static sector's tenant rode the renormalization shift exactly.
+    const finalOther = state.board.placements[otherIdx]!.origin;
+    const shifted = state.players.find((p: { id: string }) => p.id === other.id)!;
+    expect(shifted.position).toEqual({
+      x: otherPosBefore.x + (finalOther.x - otherOrigin.x),
+      y: otherPosBefore.y + (finalOther.y - otherOrigin.y),
+    });
+  });
+
+  it("older revisions still refuse the negative landing", () => {
+    let { state } = newGame(); // helper default: rev-ungated (1)
+    const me = activePlayer(state);
+    const idx = state.board.placements.findIndex(
+      (p) => me.position.y >= p.origin.y && me.position.y < p.origin.y + 5,
+    );
+    const otherOrigin = state.board.placements[idx === 0 ? 1 : 0]!.origin;
+    const rel = giveCard(state, me.id, "relocate-sector");
+    const refused = applyCommand(state, me.id, {
+      type: "cast", instanceId: rel.instanceId,
+      target: { kind: "cell", cell: { x: otherOrigin.x - 5, y: otherOrigin.y - 5 } },
+      params: { cell: me.position },
+    });
+    expect(refused.ok).toBe(false);
+  });
+
+  it("a moving sector carries its creature, glue, warp tokens, and traps", () => {
+    let state = rev11Game();
+    const me = activePlayer(state);
+    const idx = state.board.placements.findIndex(
+      (p) => me.position.y >= p.origin.y && me.position.y < p.origin.y + 5,
+    );
+    const myOrigin = state.board.placements[idx]!.origin;
+    const otherOrigin = state.board.placements[idx === 0 ? 1 : 0]!.origin;
+    const inMine = (c: Cell) =>
+      c.x >= myOrigin.x && c.x < myOrigin.x + 5 && c.y >= myOrigin.y && c.y < myOrigin.y + 5;
+    // Seed passengers on the moving sector.
+    const spot = { x: myOrigin.x + 2, y: myOrigin.y + 2 };
+    expect(inMine(spot)).toBe(true);
+    state.creatures.push({
+      id: "c1", kind: "troll", controllerId: me.id, position: { ...spot },
+      damage: 0, maxDamage: 5, movesPerTurn: 3, movementUsed: 0,
+      attackUsed: false, justCreated: false,
+    } as (typeof state.creatures)[number]);
+    state.gluedCells[cellKey(spot)] = true;
+    state.dimWarps.push({ a: { ...spot }, b: { x: otherOrigin.x + 1, y: otherOrigin.y + 1 } });
+    state.boobytraps.push({ casterId: me.id, cells: [{ ...spot }], realKey: cellKey(spot) });
+
+    const dest = { x: otherOrigin.x + 5, y: otherOrigin.y };
+    const rel = giveCard(state, me.id, "relocate-sector");
+    state = must(state, me.id, {
+      type: "cast", instanceId: rel.instanceId,
+      target: { kind: "cell", cell: dest }, params: { cell: me.position },
+    });
+    // Expected coordinates follow the final placements (move + zero-anchor).
+    const finalMine = state.board.placements[idx]!.origin;
+    const finalOther = state.board.placements[idx === 0 ? 1 : 0]!.origin;
+    const moved = { x: spot.x + finalMine.x - myOrigin.x, y: spot.y + finalMine.y - myOrigin.y };
+    const staticShifted = {
+      x: otherOrigin.x + 1 + finalOther.x - otherOrigin.x,
+      y: otherOrigin.y + 1 + finalOther.y - otherOrigin.y,
+    };
+    expect(state.creatures[0]!.position).toEqual(moved);
+    expect(state.gluedCells[cellKey(moved)]).toBe(true);
+    expect(state.dimWarps[0]!.a).toEqual(moved);
+    expect(state.dimWarps[0]!.b).toEqual(staticShifted);
+    expect(state.boobytraps[0]!.cells[0]).toEqual(moved);
+    expect(state.boobytraps[0]!.realKey).toBe(cellKey(moved));
+  });
+});