Feature: TV screen CRT has a warm up and power down sequence

tv-player/src/core/animate.js

@@ -1,15 +1,15 @@
 import * as THREE from 'three';
-import { updateVcrDisplay } from '../scene/vcr-display.js';
 import { updateDoor } from '../scene/door.js';
+import { updateVcrDisplay } from '../scene/vcr-display.js';
 import { state } from '../state.js';
-
+import { updateScreenEffect } from '../scene/tv-set.js'
 
 function updateCamera() {
-    const globalTime = Date.now() * 0.00005;
-    const lookAtTime = Date.now() * 0.00003;
+    const globalTime = Date.now() * 0.00003;
+    const lookAtTime = Date.now() * 0.0002;
 
-    const camAmplitude = 0.5;
-    const lookAmplitude = 0.05;
+    const camAmplitude = 0.2;
+    const lookAmplitude = 0.1;
 
     // Base Camera Position in front of the TV
     const baseX = -0.5;
@@ -166,6 +166,7 @@ export function animate() {
     updateBooks();
     updateDoor();
     updatePictureFrame();
+    updateScreenEffect();
 
     // RENDER!
     state.renderer.render(state.scene, state.camera);

tv-player/src/core/video-player.js

@@ -1,5 +1,6 @@
 import * as THREE from 'three';
 import { state } from '../state.js';
+import { turnTvScreenOff, turnTvScreenOn, setScreenEffect } from '../scene/tv-set.js';
 
 // --- Play video by index ---
 export function playVideoByIndex(index) {
@@ -14,14 +15,10 @@ export function playVideoByIndex(index) {
 
     if (index < 0 || index >= state.videoUrls.length) {
         console.info('End of playlist reached. Reload tapes to start again.');
-        state.screenLight.intensity = 0.0;
-        state.tvScreen.material.dispose();
-        state.tvScreen.material = new THREE.MeshPhongMaterial({
-            color: 0x0a0a0a, // Deep black
-            shininess: 5,
-            specular: 0x111111
+        setScreenEffect(2, () => { // Power-down effect
+            state.screenLight.intensity = 0.0;
+            turnTvScreenOff();
         });
-        state.tvScreen.material.needsUpdate = true;
         state.isVideoLoaded = false;
         state.lastUpdateTime = -1; // force VCR to redraw
         return;
@@ -44,11 +41,10 @@ export function playVideoByIndex(index) {
         state.videoTexture.needsUpdate = true;
 
         // 2. Apply the video texture to the screen mesh
-        state.tvScreen.material.dispose();
-        state.tvScreen.material = new THREE.MeshBasicMaterial({ map: state.videoTexture });
-        state.tvScreen.material.needsUpdate = true; 
-
-        // 3. Start playback 
+        turnTvScreenOn();
+        
+        // 3. Start playback and trigger the warm-up effect simultaneously
+        setScreenEffect(1); // Trigger warm-up
         state.videoElement.play().then(() => {
             state.isVideoLoaded = true;
             // Use the defined base intensity for screen glow

tv-player/src/scene/door.js

@@ -77,15 +77,15 @@ export function updateDoor() {
 
     if (stateTimer <= 0) {
         const nextState = Math.random();
-        if (nextState < 0.4) {
+        if (nextState < 0.1) {
             doorState = DOOR_STATES.RESTING;
             stateTimer = 2 + Math.random() * 5;
-        } else if (nextState < 0.7) {
+        } else if (nextState < 0.5) {
             doorState = DOOR_STATES.OPENING;
-            stateTimer = 2 + Math.random() * 4;
+            stateTimer = 2 + Math.random() * 5;
         } else {
             doorState = DOOR_STATES.CLOSING;
-            stateTimer = 3 + Math.random() * 3;
+            stateTimer = 3 + Math.random() * 2;
         }
     }
 
@@ -97,7 +97,7 @@ export function updateDoor() {
             break;
         case DOOR_STATES.CLOSING:
             if (doorGroupPanel.rotation.y < minAngle) {
-                doorGroupPanel.rotation.y += speed;
+                doorGroupPanel.rotation.y += speed * 2;
             }
             break;
     }
@@ -105,7 +105,7 @@ export function updateDoor() {
     // Outside material pulsating glow
     if (outsideMaterial) {
         const glowMin = 0.001;
-        const glowMax = 0.01;
+        const glowMax = 0.005;
         const glowSpeed = 0.0001; // Speed of the pulsation
         glowIntensity += glowDirection * glowSpeed;
         if (glowIntensity >= glowMax) {

tv-player/src/scene/room-walls.js

@@ -63,7 +63,7 @@ export function createRoomWalls() {
     ceiling.receiveShadow = true; 
     state.scene.add(ceiling);
 
-    state.crawlSurfaces.push(backWall, frontWall, leftWall, rightWall);
+    state.crawlSurfaces.push(backWall, leftWall, rightWall);
     
     // --- 6. Add a Window to the Back Wall ---
     const windowWidth = 1.5;

tv-player/src/scene/screen-shaders.js

@@ -0,0 +1,18 @@
+export const screenVertexShader = `
+varying vec2 vUv;
+
+void main() {
+    vUv = uv;
+    gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
+}
+`;
+
+export const screenFragmentShader = `
+varying vec2 vUv;
+uniform sampler2D videoTexture;
+
+void main() {
+    // Sample the video texture
+    gl_FragColor = texture2D(videoTexture, vUv);
+}
+`;

tv-player/src/scene/tv-set.js

@@ -1,6 +1,7 @@
 import * as THREE from 'three';
 import { state } from '../state.js';
 import { createVcr } from './vcr.js';
+import { screenVertexShader, screenFragmentShader } from '../shaders/screen-shaders.js';
 
 export function createTvSet(x, z, rotY) {
     // --- Materials (MeshPhongMaterial) ---
@@ -136,12 +137,7 @@ export function createTvSet(x, z, rotY) {
     
     // Position the curved screen
     state.tvScreen.position.set(0.0, 1.5, -2.1); 
-    state.tvScreen.material = new THREE.MeshPhongMaterial({
-        color: 0x0a0a0a, // Deep black
-        shininess: 5,
-        specular: 0x111111
-    });
-    state.tvScreen.material.needsUpdate = true;
+    turnTvScreenOff();
     tvGroup.add(state.tvScreen);
 
     tvGroup.position.set(x, 0, z);
@@ -164,4 +160,78 @@ export function createTvSet(x, z, rotY) {
     tvGroup.add(vcr);
 
     state.scene.add(tvGroup);
+}
+
+export function turnTvScreenOff() {
+    if (state.tvScreen.material) {
+        state.tvScreen.material.dispose();
+    }
+    state.tvScreen.material = new THREE.MeshPhongMaterial({
+        color: 0x203530,
+        shininess: 45,
+        specular: 0x111111,
+    });
+    state.tvScreen.material.needsUpdate = true;
+}
+
+export function turnTvScreenOn() {
+    if (state.tvScreen.material) {
+        state.tvScreen.material.dispose();
+    }
+
+    state.tvScreen.material = new THREE.ShaderMaterial({
+        uniforms: {
+            videoTexture: { value: state.videoTexture },
+            u_effect_type: { value: 0.0 },
+            u_effect_strength: { value: 0.0 },
+        },
+        vertexShader: screenVertexShader,
+        fragmentShader: screenFragmentShader,
+        transparent: true,
+    });
+
+    state.tvScreen.material.needsUpdate = true;
+    setScreenEffect(1); // Trigger warm-up
+}
+
+/**
+ * Controls the warm-up and power-down effects on the TV screen.
+ * @param {number} effectType - 0 normal, 1 for warm-up, 2 for power-down.
+ * @param {function} onComplete - Optional callback when the animation finishes.
+ */
+export function setScreenEffect(effectType, onComplete) {
+    const material = state.tvScreen.material;
+    if (!material.uniforms) return;
+    
+    state.screenEffect.active = true;
+    state.screenEffect.type = effectType;
+    state.screenEffect.startTime = state.clock.getElapsedTime() * 1000;
+    state.screenEffect.onComplete = onComplete;
+}
+
+/**
+ * Updates the screen effect animation. Should be called in the main render loop.
+ */
+export function updateScreenEffect() {
+    if (!state.screenEffect.active) return;
+
+    const material = state.tvScreen.material;
+    if (!material.uniforms) return;
+
+    const elapsedTime = (state.clock.getElapsedTime() * 1000) - state.screenEffect.startTime;
+    const progress = Math.min(elapsedTime / state.screenEffect.duration, 1.0);
+    
+    const easedProgress = state.screenEffect.easing(progress);
+
+    material.uniforms.u_effect_type.value = state.screenEffect.type;
+    material.uniforms.u_effect_strength.value = easedProgress;
+
+    if (progress >= 1.0) {
+        state.screenEffect.active = false;
+        material.uniforms.u_effect_strength.value = (state.screenEffect.type === 2) ? 1.0 : 0.0; // Final state
+        if (state.screenEffect.onComplete) {
+            state.screenEffect.onComplete();
+        }
+        material.uniforms.u_effect_type.value = 0.0; // Reset effect type
+    }
 }

tv-player/src/shaders/screen-shaders.js

@@ -0,0 +1,50 @@
+export const screenVertexShader = `
+varying vec2 vUv;
+
+void main() {
+    vUv = uv;
+    gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
+}
+`;
+
+export const screenFragmentShader = `
+varying vec2 vUv;
+uniform sampler2D videoTexture;
+uniform float u_effect_type;     // 0: none, 1: warmup, 2: powerdown
+uniform float u_effect_strength; // 0.0 to 1.0
+
+void main() {
+    vec2 centeredUv = vUv - 0.5;
+    vec4 finalColor;
+
+    if (u_effect_type < 0.5) { // No effect
+        finalColor = texture2D(videoTexture, vUv);
+    } else if (u_effect_type < 1.5) { // Warm-up effect
+        // A bright dot expands to reveal the screen content
+        float effectRadius = u_effect_strength * 0.75; // Max radius of 0.75 (sqrt(0.5*0.5 + 0.5*0.5))
+        float distanceToCenter = length(centeredUv);
+        
+        // Smoothly transition the edge of the circle
+        float vignette = smoothstep(effectRadius, effectRadius - 0.1, distanceToCenter);
+        vec4 videoColor = texture2D(videoTexture, vUv);
+        
+        finalColor = videoColor * vignette * u_effect_strength; // Fade in brightness
+
+    } else { // Power-down effect
+        // The image collapses into a bright horizontal line and fades
+        float collapseFactor = 1.0 - u_effect_strength;
+        
+        // Squeeze the UVs vertically
+        vec2 squeezedUv = vec2(vUv.x, 0.5 + (vUv.y - 0.5) * collapseFactor);
+        vec4 videoColor = texture2D(videoTexture, squeezedUv);
+        
+        // Create a bright glow where the line is
+        float lineGlow = pow(1.0 - abs(centeredUv.y) / (0.5 * collapseFactor + 0.01), 20.0);
+        
+        finalColor = videoColor * collapseFactor + vec4(0.8, 0.9, 1.0, 1.0) * lineGlow * u_effect_strength;
+
+    }
+
+    gl_FragColor = finalColor;
+}
+`;

tv-player/src/state.js

@@ -8,12 +8,21 @@ export function initState() {
     scene: null,
     camera: null,
     renderer: null,
+    clock: new THREE.Clock(),
     tvScreen: null,
     videoTexture: null,
     screenLight: null,
     lampLightPoint: null,
     lampLightSpot: null,
     effectsManager: null,
+    screenEffect: {
+        active: false,
+        type: 0,
+        startTime: 0,
+        duration: 1000, // in ms
+        onComplete: null,
+        easing: (t) => t < 0.5 ? 2 * t * t : -1 + (4 - 2 * t) * t, // easeInOutQuad
+    },
 
     // VCR Display
     lastUpdateTime: -1,