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scene change

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <script type="importmap">
    {
      "imports": {
        "@mulsense/xnew": "https://unpkg.com/@mulsense/xnew@0.7.x/dist/xnew.mjs",
        "@mulsense/xnew/addons/xpixi": "https://unpkg.com/@mulsense/xnew@0.7.x/dist/addons/xpixi.mjs",
        "pixi.js": "https://cdnjs.cloudflare.com/ajax/libs/pixi.js/8.6.6/pixi.min.mjs"
      }
    }
  </script>
  <script type="module" src="./script.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>
</head>

<body class="m-0 p-0 w-full h-screen overflow-hidden">
  <div id="main" class="relative w-full h-full"></div>
</body>

</html>
script.js
import xnew from '@mulsense/xnew';
import xpixi from '@mulsense/xnew/addons/xpixi';
import * as PIXI from 'pixi.js';

xnew(document.querySelector('#main'), Main);

function Main(unit) {
  xnew.extend(xnew.basics.Screen, { width: 800, height: 600 });

  // pixi setup
  xpixi.initialize({ canvas: unit.canvas });
  unit.on('render', () => {
    xpixi.renderer.render(xpixi.scene);
  });

  xnew(Contents);
}

function Contents(unit) {
  xnew(Scene1);
}

function Scene1(unit) {
  xnew.extend(xnew.basics.Scene);
  
  xnew(Text, { text: 'Scene1' });
  xnew(Box, { x: xpixi.canvas.width / 2, y: xpixi.canvas.height / 2, size: 160, color: 0xff2266 });

  unit.on('pointerdown', ({ event }) => unit.moveTo(Scene2));
}

function Scene2(unit) {
  xnew.extend(xnew.basics.Scene);
  
  xnew(Text, { text: 'Scene2' });
  xnew(Box, { x: xpixi.canvas.width / 2, y: xpixi.canvas.height / 2, size: 160, color: 0x6622ff });

  unit.on('pointerdown', ({ event }) => unit.moveTo(Scene1));
}

function Text(unit, { text }) {
  const object = xpixi.nest(new PIXI.Text(text, { fontSize: 24, fill: 0x000000 }));
  object.position.set(10, 10);
}

function Box(unit, { x, y, size, color }) {
  const object = xpixi.nest(new PIXI.Container());
  object.position.set(x, y);
  object.addChild(new PIXI.Graphics().rect(-size / 2, -size / 2, size, size).fill(color));
  
  unit.on('update', () => {
    object.rotation += 0.01;
  });
}