init with react+axum+spacetimedb

src/data/runtimeStats.ts

@@ -0,0 +1,102 @@
+import { GameRuntimeStats, GameState } from '../types';
+
+function clampNonNegativeInteger(value: unknown) {
+  if (typeof value !== 'number' || !Number.isFinite(value)) return 0;
+  return Math.max(0, Math.floor(value));
+}
+
+function getIsoTimestamp(now: number) {
+  return new Date(now).toISOString();
+}
+
+export function createInitialGameRuntimeStats(
+  options: {
+    isActiveRun?: boolean;
+    now?: number;
+  } = {},
+): GameRuntimeStats {
+  const now = options.now ?? Date.now();
+
+  return {
+    playTimeMs: 0,
+    lastPlayTickAt: options.isActiveRun ? getIsoTimestamp(now) : null,
+    hostileNpcsDefeated: 0,
+    questsAccepted: 0,
+    itemsUsed: 0,
+    scenesTraveled: 0,
+  };
+}
+
+export function normalizeGameRuntimeStats(
+  stats: Partial<GameRuntimeStats> | null | undefined,
+  options: {
+    isActiveRun?: boolean;
+    now?: number;
+  } = {},
+): GameRuntimeStats {
+  const now = options.now ?? Date.now();
+
+  return {
+    playTimeMs: typeof stats?.playTimeMs === 'number' && Number.isFinite(stats.playTimeMs)
+      ? Math.max(0, stats.playTimeMs)
+      : 0,
+    lastPlayTickAt: options.isActiveRun ? getIsoTimestamp(now) : null,
+    hostileNpcsDefeated: clampNonNegativeInteger(stats?.hostileNpcsDefeated),
+    questsAccepted: clampNonNegativeInteger(stats?.questsAccepted),
+    itemsUsed: clampNonNegativeInteger(stats?.itemsUsed),
+    scenesTraveled: clampNonNegativeInteger(stats?.scenesTraveled),
+  };
+}
+
+export function incrementGameRuntimeStats(
+  stats: GameRuntimeStats,
+  increments: Partial<Pick<GameRuntimeStats, 'hostileNpcsDefeated' | 'questsAccepted' | 'itemsUsed' | 'scenesTraveled'>>,
+): GameRuntimeStats {
+  return {
+    ...stats,
+    hostileNpcsDefeated: stats.hostileNpcsDefeated + clampNonNegativeInteger(increments.hostileNpcsDefeated),
+    questsAccepted: stats.questsAccepted + clampNonNegativeInteger(increments.questsAccepted),
+    itemsUsed: stats.itemsUsed + clampNonNegativeInteger(increments.itemsUsed),
+    scenesTraveled: stats.scenesTraveled + clampNonNegativeInteger(increments.scenesTraveled),
+  };
+}
+
+export function syncGameRuntimePlayTime(stats: GameRuntimeStats, now = Date.now()): GameRuntimeStats {
+  if (!stats.lastPlayTickAt) {
+    return {
+      ...stats,
+      lastPlayTickAt: getIsoTimestamp(now),
+    };
+  }
+
+  const lastTickMs = Date.parse(stats.lastPlayTickAt);
+  if (Number.isNaN(lastTickMs)) {
+    return {
+      ...stats,
+      lastPlayTickAt: getIsoTimestamp(now),
+    };
+  }
+
+  return {
+    ...stats,
+    playTimeMs: stats.playTimeMs + Math.max(0, now - lastTickMs),
+    lastPlayTickAt: getIsoTimestamp(now),
+  };
+}
+
+export function getLiveGamePlayTimeMs(stats: GameRuntimeStats, now = Date.now()) {
+  if (!stats.lastPlayTickAt) return stats.playTimeMs;
+
+  const lastTickMs = Date.parse(stats.lastPlayTickAt);
+  if (Number.isNaN(lastTickMs)) return stats.playTimeMs;
+
+  return stats.playTimeMs + Math.max(0, now - lastTickMs);
+}
+
+export function syncGameStatePlayTime(state: GameState, now = Date.now()): GameState {
+  return {
+    ...state,
+    runtimeStats: syncGameRuntimePlayTime(state.runtimeStats, now),
+  };
+}
+