feat: move to typescript, miniplex ecs

src/game/PlayerStats.ts

@@ -0,0 +1,44 @@
+import type { Player } from '../core/types'
+import type { PlayerStatsSnapshot } from './events'
+
+/** Статистика зрителей: убийства и промахи по именам. */
+export class PlayerStats {
+  private readonly entries = new Map<string, { kills: number; misses: number }>()
+
+  reset(): void {
+    this.entries.clear()
+  }
+
+  addKill(player: Player): void {
+    this.entry(player).kills++
+  }
+
+  addMiss(player: Player): void {
+    this.entry(player).misses++
+  }
+
+  /** Топ-3 по убийствам и главный «Мазила» по промахам. */
+  snapshot(): PlayerStatsSnapshot {
+    const names = [...this.entries.keys()]
+    const byKills = names.slice().sort((a, b) => this.entries.get(b)!.kills - this.entries.get(a)!.kills)
+    const top = byKills.slice(0, 3).map((name) => ({ name, kills: this.entries.get(name)!.kills }))
+
+    let mazila: PlayerStatsSnapshot['mazila'] = null
+    for (const name of names) {
+      const { misses } = this.entries.get(name)!
+      if (misses > 0 && (!mazila || misses > mazila.misses)) {
+        mazila = { name, misses }
+      }
+    }
+    return { top, mazila }
+  }
+
+  private entry(player: Player): { kills: number; misses: number } {
+    let entry = this.entries.get(player.name)
+    if (!entry) {
+      entry = { kills: 0, misses: 0 }
+      this.entries.set(player.name, entry)
+    }
+    return entry
+  }
+}