private clearCanvas method

src/js/scene.js

@@ -12,9 +12,13 @@ export class Scene {
     this.setScreenSize(width, height);
   }
 
+  #clearCanvas() {
+    this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
+  }
+
   run() {
     // clear canvas
-    this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
+    this.#clearCanvas();
 
     // fill canvas
     this.context.fillStyle = '#523c4e';