feat(slay-the-spire-like): add map navigation logic

Implement `canMoveTo` and `moveToNode` for navigating the point
crawl map, and add `PointCrawlMapNavigator` type. Also reformat
map module files to use double quotes.

src/samples/slay-the-spire-like/system/map/index.ts

@@ -1,5 +1,18 @@
-export { MapNodeType, MapLayerType } from './types';
-export type { MapNode, MapLayer, PointCrawlMap, MapGenerationConfig } from './types';
+export { MapNodeType, MapLayerType } from "./types";
+export type {
+  MapNode,
+  MapLayer,
+  PointCrawlMap,
+  MapGenerationConfig,
+} from "./types";
 
-export { generatePointCrawlMap } from './generator';
-export { getNode, getChildren, getParents, hasPath, findAllPaths } from './generator';
+export { generatePointCrawlMap } from "./generator";
+export {
+  getNode,
+  getChildren,
+  getParents,
+  hasPath,
+  findAllPaths,
+} from "./generator";
+
+export { canMoveTo, moveToNode } from "./navigation";

src/samples/slay-the-spire-like/system/map/navigation.ts

@@ -0,0 +1,33 @@
+import { getNode } from "./generator";
+import { PointCrawlMap, PointCrawlMapNavigator } from "./types";
+
+export function canMoveTo(
+  navigator: PointCrawlMapNavigator,
+  map: PointCrawlMap,
+  targetNodeId: string,
+): boolean {
+  const currentNode = getNode(map, navigator.currentNodeId);
+  if (!currentNode) return false;
+
+  return currentNode.childIds.includes(targetNodeId);
+}
+
+export function moveToNode(
+  navigator: PointCrawlMapNavigator,
+  map: PointCrawlMap,
+  targetNodeId: string,
+): boolean {
+  if (!canMoveTo(navigator, map, targetNodeId)) {
+    return false;
+  }
+
+  const targetNode = getNode(map, targetNodeId);
+  if (!targetNode) {
+    return false;
+  }
+
+  // Update current position
+  navigator.currentNodeId = targetNodeId;
+  navigator.visitedNodes.add(targetNodeId);
+  return true;
+}

src/samples/slay-the-spire-like/system/map/types.ts

@@ -4,22 +4,22 @@ import {EncounterData} from "@/samples/slay-the-spire-like/system/types";
  * Types of nodes that can appear on the point crawl map.
  */
 export enum MapNodeType {
-    Start = 'start',
-    End = 'end',
-    Minion = 'minion',
-    Elite = 'elite',
-    Event = 'event',
-    Camp = 'camp',
-    Shop = 'shop',
-    Curio = 'curio',
+  Start = "start",
+  End = "end",
+  Minion = "minion",
+  Elite = "elite",
+  Event = "event",
+  Camp = "camp",
+  Shop = "shop",
+  Curio = "curio",
 }
 
 /**
  * Semantic type of a layer.
  */
 export enum MapLayerType {
-    Wild = 'wild',
-    Settlement = 'settlement',
+  Wild = "wild",
+  Settlement = "settlement",
 }
 
 /**
@@ -47,7 +47,7 @@ export interface MapLayer {
   /** Ordered IDs of nodes in this layer */
   nodeIds: string[];
   /** Semantic type of the layer */
-    layerType: MapLayerType | 'start' | 'end';
+  layerType: MapLayerType | "start" | "end";
   /** Direct references to nodes in this layer (for performance) */
   nodes: MapNode[];
 }
@@ -64,6 +64,11 @@ export interface PointCrawlMap {
   parentIndex?: Map<string, string[]>;
 }
 
+export interface PointCrawlMapNavigator {
+  currentNodeId: string;
+  visitedNodes: Set<string>;
+}
+
 /**
  * Configuration for map generation.
  */