DNDGamePlayer: Electron редактор сцен, презентация, упаковка electron-builder

Made-with: Cursor
2026-04-19 14:16:54 +08:00
commit a6cbcc273e
82 changed files with 22195 additions and 0 deletions
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+import crypto from 'node:crypto';
+
+import type { EffectsEvent, EffectsState, EffectToolState } from '../../shared/types';
+
+function nowMs(): number {
+  return Date.now();
+}
+
+function defaultTool(): EffectToolState {
+  return { tool: 'fog', radiusN: 0.08, intensity: 0.6 };
+}
+
+export class EffectsStore {
+  private state: EffectsState = {
+    revision: 1,
+    serverNowMs: nowMs(),
+    tool: defaultTool(),
+    instances: [],
+  };
+
+  getState(): EffectsState {
+    // Всегда обновляем serverNowMs при чтении — это наш "таймкод" для рендереров.
+    return { ...this.state, serverNowMs: nowMs() };
+  }
+
+  clear(): EffectsState {
+    this.state = {
+      ...this.state,
+      revision: this.state.revision + 1,
+      serverNowMs: nowMs(),
+      instances: [],
+    };
+    return this.state;
+  }
+
+  dispatch(event: EffectsEvent): EffectsState {
+    const s = this.state;
+    const next: EffectsState = applyEvent(s, event);
+    this.state = next;
+    return next;
+  }
+
+  /** Удаляет истёкшие (по lifetime) эффекты, чтобы state не разрастался бесконечно. */
+  pruneExpired(): boolean {
+    const now = nowMs();
+    const before = this.state.instances.length;
+    const kept = this.state.instances.filter((i) => {
+      if (i.type === 'lightning') {
+        return now - i.createdAtMs < i.lifetimeMs;
+      }
+      if (i.type === 'scorch') {
+        return now - i.createdAtMs < i.lifetimeMs;
+      }
+      if (i.type === 'fog') {
+        if (i.lifetimeMs === null) return true;
+        return now - i.createdAtMs < i.lifetimeMs;
+      }
+      return true;
+    });
+    if (kept.length === before) return false;
+    this.state = {
+      ...this.state,
+      revision: this.state.revision + 1,
+      serverNowMs: now,
+      instances: kept,
+    };
+    return true;
+  }
+
+  makeId(prefix: string): string {
+    return `${prefix}_${crypto.randomBytes(6).toString('hex')}_${String(nowMs())}`;
+  }
+}
+
+function applyEvent(state: EffectsState, event: EffectsEvent): EffectsState {
+  const bump = (patch: Omit<EffectsState, 'revision' | 'serverNowMs'>): EffectsState => ({
+    ...patch,
+    revision: state.revision + 1,
+    serverNowMs: nowMs(),
+  });
+  switch (event.kind) {
+    case 'tool.set':
+      return bump({ ...state, tool: event.tool });
+    case 'instances.clear':
+      return bump({ ...state, instances: [] });
+    case 'instance.add':
+      return bump({ ...state, instances: [...state.instances, event.instance] });
+    case 'instance.remove':
+      return bump({ ...state, instances: state.instances.filter((i) => i.id !== event.id) });
+    default: {
+      // Exhaustiveness
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      const _x: never = event;
+      return state;
+    }
+  }
+}