perf(ui): switch UI layers to wall-time tick intervals (#3025)

## Description:

Preparatory change for the upcoming “unbounded worker” work: 
decouple expensive UI layer updates from game tick frequency by moving
UI ticking to wall-clock intervals. This reduces redundant UI work when
the simulation runs faster than real time (notably replays /
singleplayer at speed > 1) while keeping the UI responsive and
predictable.

## Changes:

- Add optional `Layer.getTickIntervalMs()` and enforce it in
`GameRenderer.tick()` using wall-clock time.
- Convert key UI layers from tick-modulus gating to fixed intervals:
  - `ControlPanel`: 100ms
  - `GameRightSidebar`: 250ms
  - `MainRadialMenu`: 500ms
  - `Leaderboard`, `NameLayer`, `ReplayPanel`, `TeamStats`: 1000ms


## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

DISCORD_USERNAME

src/client/graphics/GameRenderer.ts

@@ -305,6 +305,7 @@ export function createRenderer(
 
 export class GameRenderer {
   private context: CanvasRenderingContext2D;
+  private layerTickState = new Map<Layer, { lastTickAtMs: number }>();
 
   constructor(
     private game: GameView,
@@ -416,7 +417,28 @@ export class GameRenderer {
   }
 
   tick() {
-    this.layers.forEach((l) => l.tick?.());
+    const nowMs = performance.now();
+
+    for (const layer of this.layers) {
+      if (!layer.tick) {
+        continue;
+      }
+
+      const state = this.layerTickState.get(layer) ?? {
+        lastTickAtMs: -Infinity,
+      };
+
+      const intervalMs = layer.getTickIntervalMs?.() ?? 0;
+      if (intervalMs > 0 && nowMs - state.lastTickAtMs < intervalMs) {
+        this.layerTickState.set(layer, state);
+        continue;
+      }
+
+      state.lastTickAtMs = nowMs;
+      this.layerTickState.set(layer, state);
+
+      layer.tick();
+    }
   }
 
   resize(width: number, height: number): void {

src/client/graphics/layers/ControlPanel.ts

@@ -39,6 +39,10 @@ export class ControlPanel extends LitElement implements Layer {
 
   private _lastTroopIncreaseRate: number;
 
+  getTickIntervalMs() {
+    return 100;
+  }
+
   init() {
     this.attackRatio = Number(
       localStorage.getItem("settings.attackRatio") ?? "0.2",
@@ -81,9 +85,7 @@ export class ControlPanel extends LitElement implements Layer {
       return;
     }
 
-    if (this.game.ticks() % 5 === 0) {
-      this.updateTroopIncrease();
-    }
+    this.updateTroopIncrease();
 
     this._maxTroops = this.game.config().maxTroops(player);
     this._gold = player.gold();

src/client/graphics/layers/GameRightSidebar.ts

@@ -2,10 +2,9 @@ import { html, LitElement } from "lit";
 import { customElement, state } from "lit/decorators.js";
 import { EventBus } from "../../../core/EventBus";
 import { GameType } from "../../../core/game/Game";
-import { GameUpdateType } from "../../../core/game/GameUpdates";
 import { GameView } from "../../../core/game/GameView";
 import { crazyGamesSDK } from "../../CrazyGamesSDK";
-import { PauseGameIntentEvent } from "../../Transport";
+import { PauseGameIntentEvent, SendWinnerEvent } from "../../Transport";
 import { translateText } from "../../Utils";
 import { Layer } from "./Layer";
 import { ShowReplayPanelEvent } from "./ReplayPanel";
@@ -50,16 +49,20 @@ export class GameRightSidebar extends LitElement implements Layer {
     this._isVisible = true;
     this.game.inSpawnPhase();
 
+    this.eventBus.on(SendWinnerEvent, () => {
+      this.hasWinner = true;
+      this.requestUpdate();
+    });
+
     this.requestUpdate();
   }
 
+  getTickIntervalMs() {
+    return 250;
+  }
+
   tick() {
     // Timer logic
-    const updates = this.game.updatesSinceLastTick();
-    if (updates) {
-      this.hasWinner = this.hasWinner || updates[GameUpdateType.Win].length > 0;
-    }
-
     // Check if the player is the lobby creator
     if (!this.isLobbyCreator && this.game.myPlayer()?.isLobbyCreator()) {
       this.isLobbyCreator = true;
@@ -67,18 +70,24 @@ export class GameRightSidebar extends LitElement implements Layer {
     }
 
     const maxTimerValue = this.game.config().gameConfig().maxTimerValue;
+    const spawnPhaseTurns = this.game.config().numSpawnPhaseTurns();
+    const ticks = this.game.ticks();
+    const gameTicks = Math.max(0, ticks - spawnPhaseTurns);
+    const elapsedSeconds = Math.floor(gameTicks / 10); // 10 ticks per second
+
+    if (this.game.inSpawnPhase()) {
+      this.timer = maxTimerValue !== undefined ? maxTimerValue * 60 : 0;
+      return;
+    }
+
+    if (this.hasWinner) {
+      return;
+    }
+
     if (maxTimerValue !== undefined) {
-      if (this.game.inSpawnPhase()) {
-        this.timer = maxTimerValue * 60;
-      } else if (!this.hasWinner && this.game.ticks() % 10 === 0) {
-        this.timer = Math.max(0, this.timer - 1);
-      }
+      this.timer = Math.max(0, maxTimerValue * 60 - elapsedSeconds);
     } else {
-      if (this.game.inSpawnPhase()) {
-        this.timer = 0;
-      } else if (!this.hasWinner && this.game.ticks() % 10 === 0) {
-        this.timer++;
-      }
+      this.timer = elapsedSeconds;
     }
   }
 

src/client/graphics/layers/Layer.ts

@@ -1,6 +1,9 @@
 export interface Layer {
   init?: () => void;
   tick?: () => void;
+  // Optional hint to throttle expensive ticks by wall-clock.
+  // If omitted or <= 0, the layer ticks whenever GameRenderer ticks.
+  getTickIntervalMs?: () => number;
   renderLayer?: (context: CanvasRenderingContext2D) => void;
   shouldTransform?: () => boolean;
   redraw?: () => void;

src/client/graphics/layers/Leaderboard.ts

@@ -55,12 +55,14 @@ export class Leaderboard extends LitElement implements Layer {
 
   init() {}
 
+  getTickIntervalMs() {
+    return 1000;
+  }
+
   tick() {
     if (this.game === null) throw new Error("Not initialized");
     if (!this.visible) return;
-    if (this.game.ticks() % 10 === 0) {
-      this.updateLeaderboard();
-    }
+    this.updateLeaderboard();
   }
 
   private setSort(key: "tiles" | "gold" | "maxtroops") {

src/client/graphics/layers/MainRadialMenu.ts

@@ -33,6 +33,10 @@ export class MainRadialMenu extends LitElement implements Layer {
 
   private clickedTile: TileRef | null = null;
 
+  getTickIntervalMs() {
+    return 500;
+  }
+
   constructor(
     private eventBus: EventBus,
     private game: GameView,
@@ -156,18 +160,16 @@ export class MainRadialMenu extends LitElement implements Layer {
 
   async tick() {
     if (!this.radialMenu.isMenuVisible() || this.clickedTile === null) return;
-    if (this.game.ticks() % 5 === 0) {
-      this.game
-        .myPlayer()!
-        .actions(this.clickedTile)
-        .then((actions) => {
-          this.updatePlayerActions(
-            this.game.myPlayer()!,
-            actions,
-            this.clickedTile!,
-          );
-        });
-    }
+    this.game
+      .myPlayer()!
+      .actions(this.clickedTile)
+      .then((actions) => {
+        this.updatePlayerActions(
+          this.game.myPlayer()!,
+          actions,
+          this.clickedTile!,
+        );
+      });
   }
 
   renderLayer(context: CanvasRenderingContext2D) {

src/client/graphics/layers/NameLayer.ts

@@ -133,11 +133,11 @@ export class NameLayer implements Layer {
     }
   }
 
-  public tick() {
-    if (this.game.ticks() % 10 !== 0) {
-      return;
-    }
+  getTickIntervalMs() {
+    return 1000;
+  }
 
+  public tick() {
     // Precompute the first-place player for performance
     this.firstPlace = getFirstPlacePlayer(this.game);
 

src/client/graphics/layers/ReplayPanel.ts

@@ -44,11 +44,13 @@ export class ReplayPanel extends LitElement implements Layer {
     }
   }
 
+  getTickIntervalMs() {
+    return 1000;
+  }
+
   tick() {
     if (!this.visible) return;
-    if (this.game!.ticks() % 10 === 0) {
-      this.requestUpdate();
-    }
+    this.requestUpdate();
   }
 
   onReplaySpeedChange(value: ReplaySpeedMultiplier) {

src/client/graphics/layers/TeamStats.ts

@@ -42,6 +42,10 @@ export class TeamStats extends LitElement implements Layer {
 
   init() {}
 
+  getTickIntervalMs() {
+    return 1000;
+  }
+
   tick() {
     if (this.game.config().gameConfig().gameMode !== GameMode.Team) return;
 
@@ -52,9 +56,7 @@ export class TeamStats extends LitElement implements Layer {
 
     if (!this.visible) return;
 
-    if (this.game.ticks() % 10 === 0) {
-      this.updateTeamStats();
-    }
+    this.updateTeamStats();
   }
 
   private updateTeamStats() {