Hi

function preload() {
   // Skip image files — draw everything inside the game
 }
 function create() {
   // White paper background
   this.add.rectangle(640, 360, 1280, 720, 0xffffff);
   // Draw your robot: square head + circle visor + LED face + backpack + 4 legs + 8 wheels
   const robotHead = this.add.rectangle(200, 480, 50, 55, 0x000000);
   this.add.circle(200, 460, 14, 0xffffff); // visor
   this.add.rectangle(200, 485, 20, 8, 0xffffff); // LED screen
   this.add.rectangle(200, 510, 40, 35, 0x000000); // body
   this.add.rectangle(225, 515, 12, 25, 0x000000); // backpack pack
   // arms
   this.add.rectangle(170, 505, 10, 22, 0x000000);
   this.add.rectangle(230, 505, 10, 22, 0x000000);
   // 4 legs
   this.add.rectangle(182, 555, 8, 25, 0x000000);
   this.add.rectangle(200, 555, 8, 25, 0x000000);
   this.add.rectangle(218, 555, 8, 25, 0x000000);
   this.add.rectangle(236, 555, 8, 25, 0x000000);
   // 8 wheels
   const wheels = [178,192,208,222,178,192,208,222];
   wheels.forEach((x,i)=> this.add.circle(x, 582+(i<4?0:6), 7, 0x000000));
   // Make robot solid for physics
   this.player = this.physics.add.sprite(200, 480);
   this.player.setBodySize(50, 70);
   this.player.setCollideWorldBounds(true);
   // Simple drawn ground line
   this.ground = this.physics.add.staticGroup();
   const groundRect = this.add.rectangle(640, 620, 1280, 20, 0xcccccc);
   this.ground.add(groundRect);
   this.physics.add.collider(this.player, this.ground);
   // Draw portal
   this.portal = this.physics.add.sprite(1100, 560);
   this.add.circle(1100, 560, 22, 0x9900ff);
   this.add.circle(1100, 560, 16, 0xffffff);
   this.portal.setBodySize(40, 40).setImmovable(true);
   this.physics.add.overlap(this.player, this.portal, enterPortal, null, this);
   this.cursors = this.input.keyboard.createCursorKeys();
   setupChatToggle();
   setupChat();
   updateLevelText();
 }