simplify more

src/game-loop/game-loop.ts

@@ -7,7 +7,6 @@ import { DeltaTimeCalculator } from '../utils/delta-time-calculator';
 import { rgbColorToCss, type RgbColor } from '../utils/rgb-color';
 import { AgentPopulation } from './agent-population';
 import { DevStatsOverlay } from './dev-stats-overlay';
-import { EraserPointerPreviewController } from './eraser-pointer-preview-controller';
 import { EraserPreview } from './eraser-preview';
 import { ExportSnapshotRenderer } from './export-snapshot-renderer';
 import { FramePerformance } from './frame-performance';
@@ -25,7 +24,6 @@ export default class GameLoop {
   private readonly introPrompt: IntroPrompt;
   private readonly eraserPreview: EraserPreview;
   private readonly pointerInput: GardenPointerInput;
-  private readonly eraserPreviewController: EraserPointerPreviewController;
   private readonly agentPopulation: AgentPopulation;
   private readonly exportSnapshotRenderer: ExportSnapshotRenderer;
   private readonly framePerformance = new FramePerformance();
@@ -34,6 +32,7 @@ export default class GameLoop {
   private readonly seedValue = Math.floor(Math.random() * 0xffffffff);
   private readonly seed = this.seedValue.toString(16);
   private readonly resizeListener = this.resize.bind(this);
+  private readonly _canvasSize: vec2 = vec2.create();
 
   private pendingIntroResizeAt: DOMHighResTimeStamp | null = null;
   private previousAccentColor = '';
@@ -54,7 +53,6 @@ export default class GameLoop {
       this.framePerformance.adaptiveCapInitial
     );
     this.introPrompt = new IntroPrompt(ui.prompt);
-    this.eraserPreview = new EraserPreview(canvas, ui.eraserPreview);
     this.toolbarContrastMonitor = new ToolbarContrastMonitor(canvas, ui.toolbar, device);
     this.agentPopulation = new AgentPopulation(
       this.resources.agentGenerationPipeline,
@@ -77,11 +75,11 @@ export default class GameLoop {
       onEraseGestureEnded: () => this.agentPopulation.requestCompactionAfterErase(),
       spawnStrokeAgents: (from, to) => this.agentPopulation.spawnStrokeAgents(from, to),
     });
-    this.eraserPreviewController = new EraserPointerPreviewController({
+    this.eraserPreview = new EraserPreview(
       canvas,
-      eraserPreview: this.eraserPreview,
-      getIsSwipeActive: () => this.pointerInput.isSwipeActive,
-    });
+      ui.eraserPreview,
+      () => this.pointerInput.isSwipeActive
+    );
     this.exportSnapshotRenderer = new ExportSnapshotRenderer({
       device,
       renderPipeline: this.resources.renderPipeline,
@@ -100,7 +98,7 @@ export default class GameLoop {
     });
 
     window.addEventListener('resize', this.resizeListener);
-    this.eraserPreviewController.attach();
+    this.eraserPreview.attach();
     this.syncDevStatsOverlay();
   }
 
@@ -110,11 +108,11 @@ export default class GameLoop {
 
   public setEraseMode(isErasing: boolean): void {
     this.pointerInput.setEraseMode(isErasing);
-    this.eraserPreviewController.setEraseMode(isErasing);
+    this.eraserPreview.setEraseMode(isErasing);
   }
 
   public updateEraserPreview(event?: PointerEvent): void {
-    this.eraserPreviewController.update(event);
+    this.eraserPreview.update(event);
   }
 
   public onVibeChanged(): void {
@@ -153,7 +151,7 @@ export default class GameLoop {
 
     window.removeEventListener('resize', this.resizeListener);
     this.pointerInput.detach();
-    this.eraserPreviewController.detach();
+    this.eraserPreview.detach();
     this.devStatsOverlay?.destroy();
     this.devStatsOverlay = null;
     this.toolbarContrastMonitor.destroy();
@@ -198,7 +196,6 @@ export default class GameLoop {
       canvasPixelRatio,
       introProgress,
       selectedColorIndex: settings.selectedColorIndex,
-      isErasing,
       channelColors,
       backgroundColor,
       eraserPixelSize,
@@ -300,7 +297,8 @@ export default class GameLoop {
   }
 
   private get canvasSize(): vec2 {
-    return vec2.fromValues(this.canvas.width, this.canvas.height);
+    vec2.set(this._canvasSize, this.canvas.width, this.canvas.height);
+    return this._canvasSize;
   }
 
   private get canvasPixelRatio(): number {