diff --git a/app.js b/app.js
index b942e44..1b82c7e 100644
--- a/app.js
+++ b/app.js
@@ -8,8 +8,6 @@ import { TetraControls } from './jsm/TetraControls.js'
 import { Vortex } from './jsm/Vortex.js'
 
 
-Array.prototype.pick = function () { return this.splice(Math.floor(Math.random() * this.length), 1)[0] }
-
 HTMLElement.prototype.addNewChild = function (tag, properties) {
     let child = document.createElement(tag)
     for (let key in properties) {
@@ -58,8 +56,8 @@ scene.camera.position.set(5, 0, 16)
 scene.ambientLight = new THREE.AmbientLight(0xffffff, 0.2)
 scene.add(scene.ambientLight)
 
-scene.directionalLight = new THREE.DirectionalLight(0xffffff, 20)
-scene.directionalLight.position.set(5, -100, -16)
+scene.directionalLight = new THREE.DirectionalLight(0xffffff, 15)
+scene.directionalLight.position.set(5, 0, -10)
 scene.add(scene.directionalLight)
 
 const holdQueue = new HoldQueue()
diff --git a/jsm/TetraGUI.js b/jsm/TetraGUI.js
index d95477f..ecda494 100644
--- a/jsm/TetraGUI.js
+++ b/jsm/TetraGUI.js
@@ -66,19 +66,24 @@ class TetraGUI extends GUI {
 
         if (window.location.search.includes("debug")) {
             this.debug = this.addFolder("debug")
-            let cameraPositionFolder = this.debug.addFolder("camera.position")
-            cameraPositionFolder.add(scene.camera.position, "x")
-            cameraPositionFolder.add(scene.camera.position, "y")
-            cameraPositionFolder.add(scene.camera.position, "z")
+            let cameraPosition = this.debug.addFolder("camera.position")
+            cameraPosition.add(scene.camera.position, "x")
+            cameraPosition.add(scene.camera.position, "y")
+            cameraPosition.add(scene.camera.position, "z")
+            
+            let directionalLightPosition = this.debug.addFolder("directionalLight.position")
+            directionalLightPosition.add(scene.directionalLight.position, "x")
+            directionalLightPosition.add(scene.directionalLight.position, "y")
+            directionalLightPosition.add(scene.directionalLight.position, "z")
         
-            let lightFolder = this.debug.addFolder("lights intensity")
-            lightFolder.add(scene.ambientLight, "intensity").name("ambient").min(0).max(20)
-            lightFolder.add(scene.directionalLight, "intensity").name("directional").min(0).max(20)
+            let light = this.debug.addFolder("lights intensity")
+            light.add(scene.ambientLight, "intensity").name("ambient").min(0).max(20)
+            light.add(scene.directionalLight, "intensity").name("directional").min(0).max(20)
         
-            let materialsFolder = this.debug.addFolder("materials opacity")
-            materialsFolder.add(scene.vortex.darkCylinder.material, "opacity").name("dark").min(0).max(1)
-            materialsFolder.add(scene.vortex.colorFullCylinder.material, "opacity").name("colorFull").min(0).max(1)
-            materialsFolder.add(I.prototype.material, "reflectivity").min(0).max(2).onChange(() => {
+            let materials = this.debug.addFolder("materials opacity")
+            materials.add(scene.vortex.darkCylinder.material, "opacity").name("dark").min(0).max(1)
+            materials.add(scene.vortex.colorFullCylinder.material, "opacity").name("colorFull").min(0).max(1)
+            materials.add(I.prototype.material, "reflectivity").min(0).max(2).onChange(() => {
                 J.prototype.material.reflectivity = I.prototype.material.reflectivity
                 L.prototype.material.reflectivity = I.prototype.material.reflectivity
                 O.prototype.material.reflectivity = I.prototype.material.reflectivity
diff --git a/jsm/gamelogic.js b/jsm/gamelogic.js
index 750f20c..1b87c96 100644
--- a/jsm/gamelogic.js
+++ b/jsm/gamelogic.js
@@ -2,6 +2,8 @@ import * as THREE from 'three'
 import { scheduler } from './scheduler.js'
 
 
+Array.prototype.pick = function () { return this.splice(Math.floor(Math.random() * this.length), 1)[0] }
+
 let P = (x, y, z = 0) => new THREE.Vector3(x, y, z)
 
 const GRAVITY = -20