text: import * as THREE from '../build/three.module.js';
  
          import Stats from './jsm/libs/stats.module.js';
  
          import { FirstPersonControls } from './jsm/controls/FirstPersonControls.js';
  
          let camera, controls, scene, renderer, stats;
  
          let mesh, geometry, material, clock;
  
          const worldWidth = 128, worldDepth = 128;
  
          init();
          animate();
  
          function init() {
          
              camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 20000 );
              camera.position.y = 200;
          
              clock = new THREE.Clock();
          
              scene = new THREE.Scene();
              scene.background = new THREE.Color( 0xaaccff );
              scene.fog = new THREE.FogExp2( 0xaaccff, 0.0007 );
          
              geometry = new THREE.PlaneGeometry( 20000, 20000, worldWidth - 1, worldDepth - 1 );
              geometry.rotateX( - Math.PI / 2 );
          
              const position = geometry.attributes.position;
              position.usage = THREE.DynamicDrawUsage;
          
              for ( let i = 0; i < position.count; i ++ ) {
              
                  const y = 35 * Math.sin( i / 2 );
                  position.setY( i, y );
              
              }
          
              const texture = new THREE.TextureLoader().load( 'textures/water.jpg' );
              texture.wrapS = texture.wrapT = THREE.RepeatWrapping;
              texture.repeat.set( 5, 5 );
          
              material = new THREE.MeshBasicMaterial( { color: 0x0044ff, map: texture } );
          
              mesh = new THREE.Mesh( geometry, material );
              scene.add( mesh );
          
              renderer = new THREE.WebGLRenderer( { antialias: true } );
              renderer.setPixelRatio( window.devicePixelRatio );
              renderer.setSize( window.innerWidth, window.innerHeight );
              document.body.appendChild( renderer.domElement );
          
              controls = new FirstPersonControls( camera, renderer.domElement );
          
              controls.movementSpeed = 500;
              controls.lookSpeed = 0.1;
          
              stats = new Stats();
              document.body.appendChild( stats.dom );
          
              //
          
              window.addEventListener( 'resize', onWindowResize );
          
          }
  
          function onWindowResize() {
          
              camera.aspect = window.innerWidth / window.innerHeight;
              camera.updateProjectionMatrix();
          
              renderer.setSize( window.innerWidth, window.innerHeight );
          
              controls.handleResize();
          
          }
  
          //
  
          function animate() {
          
              requestAnimationFrame( animate );
          
              render();
              stats.update();
          
          }
  
          function render() {
          
              const delta = clock.getDelta();
              const time = clock.getElapsedTime() * 10;
          
              const position = geometry.attributes.position;
          
              for ( let i = 0; i < position.count; i ++ ) {
              
                  const y = 35 * Math.sin( i / 5 + ( time + i ) / 7 );
                  position.setY( i, y );
              
              }
          
              position.needsUpdate = true;
          
              controls.update( delta );
              renderer.render( scene, camera );
          
          }