The clockwork minds the pit, the curse, and the shadow (GDCN)

Kestrel's archmage berserker dug a pit at the far mouth of a warp,
then tried to walk through that mouth seven times: each stride landed
on its own pit with a thornbush beyond, the maze bounced it back and
charged the stride, and on the seventh it rolled the 1 and fell in.
Cursed with SLOW DEATH at seven life, it kept drawing two cards a
turn at a point apiece, raised a SHADOW that drinks a point a turn,
and bled to death in three turns.

The path search now refuses a pit it cannot leap beyond — the same
test the maze applies — whether the pit is a waypoint or the goal.
Under SLOW DEATH the end-of-turn draw keeps four life in hand and
draws nothing when it cannot; while bleeding, or at six life or less,
no SHADOW is raised. Three tests pin them.

The chronicle tells the bounce as what it was: "leaps the pit —
nothing to land on beyond it — and teeters back", not a blind blunder
into a wall; and the shadow's last drink no longer trails a zero-damage
line. Brain and chronicle changes only, ungated; 83 ledgers replay.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jm2auWk6RP71CjaAb4FMoG

packages/engine/src/automaton.ts

@@ -582,7 +582,16 @@ function wallBlastTarget(
  * when the clockwork can unlock them; the first such door is reported so the
  * key gets used before the boot.
  */
-function pathToward(
+/** Can a wizard entering the pit at `pit` heading `dir` land beyond it —
+ * the same test the maze applies: a cell there, no wall between, no stone. */
+function pitLandable(view: GameView, pit: Cell, dir: Side): boolean {
+  const beyond = neighbor(pit, dir);
+  return !!view.board.cells[cellKey(beyond)] &&
+    (view.board.edges[edgeKey(pit, dir)] ?? "open") === "open" &&
+    view.squareContents[cellKey(beyond)]?.kind !== "stone";
+}
+
+export function pathToward(
   view: GameView,
   from: Cell,
   goals: Set<string>,
@@ -607,6 +616,11 @@ function pathToward(
         const k = cellKey(to);
         if (seen.has(k)) continue;
         if (view.squareContents[k]?.kind === "stone") continue;
+        const hazard = view.squareContents[k]?.kind;
+        // A pit is entered by leaping to the square beyond it in the same
+        // direction; with nothing to land on, the maze bounces the leaper
+        // back and charges the stride. Goal or waypoint, that is no road.
+        if (hazard === "pit" && !pitLandable(view, to, dir)) continue;
         seen.add(k);
         cameBy.set(k, { prev: cellKey(c), dir, viaDoor });
         if (goals.has(k)) { found = k; break; }
@@ -615,7 +629,6 @@ function pathToward(
         // turn, and stings — a jail with foliage. Only a wizard with no
         // road at all (throughJails) dives in. "Few will dive into one
         // unless they are desperate."
-        const hazard = view.squareContents[k]?.kind;
         if (hazard === "thornbush" && !opts.throughJails) continue;
         if (!opts.throughHazards &&
             (hazard === "pit" || hazard === "ooze" ||
@@ -725,7 +738,8 @@ function overLimit(view: GameView): number {
  * clogged hand never refreshes; only cards the brain has no play for are
  * shed (good counters and attacks are hoarded, as a human would). */
 function endTurnDrawing(view: GameView, tier: TierTraits, style?: AutomatonStyle): Command {
-  const deficit = tier.draw - (handLimitOf(view) - view.yourHand.length);
+  const draw = drawUnderCurses(view, tier.draw);
+  const deficit = draw - (handLimitOf(view) - view.yourHand.length);
   if (tier.sheds && deficit > 0) {
     const shed = [...view.yourHand]
       .filter((c) => discardValue(c, view, style) <= 3)
@@ -734,7 +748,16 @@ function endTurnDrawing(view: GameView, tier: TierTraits, style?: AutomatonStyle
       .map((c) => c.instanceId);
     if (shed.length > 0) return { type: "discard", instanceIds: shed };
   }
-  return { type: "endTurn", draw: tier.draw };
+  return { type: "endTurn", draw };
+}
+
+/** SLOW DEATH bleeds a point per card drawn: the clockwork draws only what
+ * it can afford, keeping four life in hand, and nothing at all when it
+ * cannot — a bare hand beats a bare grave. */
+export function drawUnderCurses(view: GameView, draw: number): number {
+  const slow = view.sustained.some((e) => e.cardId === "slow-death" && e.targetId === view.you && !e.data?.reversed);
+  if (!slow) return draw;
+  return Math.max(0, Math.min(draw, me(view).life - 4));
 }
 
 function worstCards(view: GameView, n: number, style?: AutomatonStyle): string[] {
@@ -1522,8 +1545,13 @@ export function automatonCommand(
           }
         }
       }
-      // No shot at a wizard: raise a creature to do the walking.
+      // No shot at a wizard: raise a creature to do the walking. A SHADOW
-      const summon = view.yourHand.find((c) => SUMMONS.has(c.cardId));
+      // drinks a life a turn from its master — no pet for a wizard already
+      // bleeding, or with little blood to spare.
+      const bleeding = view.sustained.some((e) =>
+        (e.cardId === "slow-death" || e.cardId === "walking-dead") && e.targetId === you && !e.data?.reversed);
+      const summon = view.yourHand.find((c) => SUMMONS.has(c.cardId) &&
+        !(c.cardId === "shadow" && (bleeding || self.life <= 6)));
       if (summon && livingEnemies(view).length > 0) {
         const near = style === "worrier" ? self.position : livingEnemies(view)[0]!.position;
         const spot = summonSpot(view, near);

packages/engine/src/game.ts

@@ -648,7 +648,9 @@ export type GameEvent =
   | { type: "objectDragged"; caster: PlayerId; what: string; from: Cell; to: Cell }
   | { type: "spellReused"; player: PlayerId; card: CardInstance }
   | { type: "castAroundCorner"; caster: PlayerId }
-  | { type: "moveBumped"; player: PlayerId; direction: Side }
+  /** A stride that went nowhere: into a wall while blind, or into a pit
+   * with nothing to land on beyond it. */
+  | { type: "moveBumped"; player: PlayerId; direction: Side; why?: "pit" }
   | { type: "attackMisdirected"; attacker: PlayerId; intended: PlayerId; rolledDirection: Side; newTarget: PlayerId | null }
   | { type: "dieRolled"; player: PlayerId | null; roll: number; purpose: string }
   | { type: "tableTalk"; player: PlayerId; text: string }
@@ -4352,7 +4354,7 @@ function doMove(prev: GameState, direction: Side, over = false): CommandResult {
       // Nowhere to land: teeter back where you started.
       p.position = from;
       state.turn.movementUsed++;
-      events.push({ type: "moveBumped", player: p.id, direction });
+      events.push({ type: "moveBumped", player: p.id, direction, why: "pit" });
       return { ok: true, state, events };
     }
   }

packages/engine/test/automaton.test.ts

@@ -8,7 +8,7 @@ import {
 } from "../src/game";
 import { cellKey, edgeKey } from "../src/board";
 import { sightedCellsFor, viewFor } from "../src/view";
-import { automatonCommand, automatonFallback, type AutomatonStyle, type AutomatonTier } from "../src/automaton";
+import { automatonCommand, automatonFallback, drawUnderCurses, pathToward, type AutomatonStyle, type AutomatonTier } from "../src/automaton";
 import { pushSustained } from "./helpers";
 
 /** Whose input does the maze want right now? */
@@ -1110,3 +1110,83 @@ describe("interception, escape, and hazard sense", () => {
     expect(applyCommand(state, "bot", cmd!).ok).toBe(true);
   });
 });
+
+describe("the clockwork under a curse, and before a pit", () => {
+  /** A two-seat game advanced to the bot's own turn in round 2. */
+  function botsTurn() {
+    let { state } = createGame({ playerIds: ["human", "bot"], seed: 7, sets: ["basic", "expansion1"] });
+    for (let guard = 0; guard < 8; guard++) {
+      if (state.turn.round >= 2 && actingSeat(state) === "bot") break;
+      const r = applyCommand(state, actingSeat(state), { type: "endTurn", draw: 0 });
+      if (!r.ok) throw new Error(`setup: ${r.error}`);
+      state = r.state;
+    }
+    return state;
+  }
+
+  it("draws only what SLOW DEATH lets it afford", () => {
+    const state = botsTurn();
+    const bot = state.players.find((p) => p.id === "bot")!;
+    const plain = viewFor(state, "bot");
+    expect(drawUnderCurses(plain, 2)).toBe(2);
+    pushSustained(state, { id: "sd", cardId: "slow-death", casterId: "human", targetId: "bot", remainingTurns: 1e9 });
+    bot.life = 7;
+    expect(drawUnderCurses(viewFor(state, "bot"), 2)).toBe(2);
+    bot.life = 5;
+    expect(drawUnderCurses(viewFor(state, "bot"), 2)).toBe(1);
+    bot.life = 4;
+    expect(drawUnderCurses(viewFor(state, "bot"), 2)).toBe(0);
+  });
+
+  it("raises no SHADOW while bleeding, nor with little blood to spare", () => {
+    for (const rig of [
+      (s: GameState) => pushSustained(s, { id: "sd", cardId: "slow-death", casterId: "human", targetId: "bot", remainingTurns: 1e9 }),
+      (s: GameState) => { s.players.find((p) => p.id === "bot")!.life = 5; },
+    ]) {
+      let state = botsTurn();
+      rig(state);
+      const bot = state.players.find((p) => p.id === "bot")!;
+      bot.hand = [{ instanceId: "shadow#T", cardId: "shadow" }];
+      // Play the bot's whole turn: nothing it does may be the shadow.
+      for (let guard = 0; guard < 30 && actingSeat(state) === "bot"; guard++) {
+        const view = viewFor(state, "bot");
+        const cmd = automatonCommand(view, "berserker", "archmage") ?? automatonFallback(view, "archmage");
+        expect(JSON.stringify(cmd)).not.toContain("shadow#T");
+        const r = applyCommand(state, "bot", cmd);
+        if (!r.ok) break;
+        state = r.state;
+      }
+    }
+  });
+
+  it("never plans a stride into a pit it cannot leap beyond", () => {
+    const state = botsTurn();
+    const bot = state.players.find((p) => p.id === "bot")!;
+    const view0 = viewFor(state, "bot");
+    // Stand the bot at the head of a straight three-square run, dig a pit
+    // in the middle square, and wall the far one with stone: the route in
+    // from here is no route. With the stone gone, the leap is a road again.
+    const delta = { N: { x: 0, y: -1 }, E: { x: 1, y: 0 }, S: { x: 0, y: 1 }, W: { x: -1, y: 0 } } as const;
+    for (const k of Object.keys(view0.board.cells)) {
+      const [x, y] = k.split(",").map(Number) as [number, number];
+      for (const dir of ["N", "E", "S", "W"] as const) {
+        const pit = { x: x + delta[dir].x, y: y + delta[dir].y };
+        const beyond = { x: pit.x + delta[dir].x, y: pit.y + delta[dir].y };
+        if (!view0.board.cells[cellKey(pit)] || !view0.board.cells[cellKey(beyond)]) continue;
+        if ((view0.board.edges[edgeKey({ x, y }, dir)] ?? "open") !== "open") continue;
+        if ((view0.board.edges[edgeKey(pit, dir)] ?? "open") !== "open") continue;
+        if (state.squareContents[k] || state.squareContents[cellKey(pit)] || state.squareContents[cellKey(beyond)]) continue;
+        bot.position = { x, y };
+        state.squareContents[cellKey(pit)] = { kind: "pit", damage: 0, createdBy: "human" };
+        state.squareContents[cellKey(beyond)] = { kind: "stone", damage: 0, createdBy: "human" };
+        const blocked = pathToward(viewFor(state, "bot"), bot.position, new Set([cellKey(pit)]), { throughHazards: true });
+        expect(blocked === null || blocked.dir !== dir).toBe(true);
+        delete state.squareContents[cellKey(beyond)];
+        const open = pathToward(viewFor(state, "bot"), bot.position, new Set([cellKey(pit)]), { throughHazards: true });
+        expect(open?.dir).toBe(dir);
+        return;
+      }
+    }
+    throw new Error("no straight three-square run on this board");
+  });
+});

packages/web/src/net.svelte.ts

@@ -51,6 +51,9 @@ export function humanize(e: GameEvent): string | null {
       if (e.fullyStopped) return `The attack is completely stopped.`;
       return null; // the damaged event tells the story
     case "damaged": {
+      // The shadow's last drink is told by its own line; the bookkeeping
+      // blow that follows it has nothing to add.
+      if (e.amount === 0 && e.source === "shadow upkeep") return null;
       const soak = e.soaks?.map((s) => `${s.what} soaks ${s.amount}`).join(", ");
       return `${e.player} takes ${e.amount} damage (${e.source}${soak ? ` — ${soak}` : ""}) — ${e.lifeAfter} life left.`;
     }
@@ -126,7 +129,9 @@ export function humanize(e: GameEvent): string | null {
     case "cardDisplayed": return `${e.player} displays ${cardDef(e.card.cardId).name}.`;
     case "lifeTraded": return `${e.player} burns ${e.points} life for speed!`;
     case "castAroundCorner": return `The spell bends around the corner!`;
-    case "moveBumped": return `${e.player} blunders into a wall!`;
+    case "moveBumped": return e.why === "pit"
+      ? `${e.player} leaps the pit — nothing to land on beyond it — and teeters back.`
+      : `${e.player} blunders into a wall!`;
     case "attackMisdirected": return e.newTarget
       ? `${e.attacker}'s blind attack veers off — and hits ${e.newTarget}!`
       : `${e.attacker}'s blind attack flies off into the darkness.`;