src/js/animation/Meteor.js

@@ -1,309 +1,272 @@
 class Meteor {
   constructor(container) {
-    this.element = document.createElement("div");
-    this.element.style.position = "absolute";
     this.container = container;
-    this.speed = Math.random() * 3 + 4;
-    this.life = 1.0;
-    this.particles = [];
-
-    this.colorType = Math.floor(Math.random() * 4);
-    this.colors = this.getMeteorColors();
-
     this.containerRect = container.getBoundingClientRect();
 
-    // Start from random edge with PIXEL-based positioning
-    const edge = Math.floor(Math.random() * 4);
-    switch (edge) {
-      case 0:
-        // Top
-        this.x = Math.random() * this.containerRect.width;
-        this.y = -20;
-      case 1:
-        // Right
-        this.x = this.containerRect.width + 20;
-        this.y = Math.random() * this.containerRect.height;
-      case 2:
-        // Bottom
-        this.x = Math.random() * this.containerRect.width;
-        this.y = this.containerRect.height + 20;
-      case 3:
-        // Left
-        this.x = -20;
-        this.y = Math.random() * this.containerRect.height;
-      default:
-        console.log("Error creating Meteor direction");
+    // Smooth movement settings
+    this.speed = Math.random() * 1.5 + 2;
+    this.life = 1.0;
+    this.fadeSpeed = 0.002;
+
+    // Enhanced color schemes for vibrant streaks
+    this.colorSchemes = [
+      // Classic golden-white meteor
+      {
+        core: "#ffffff",
+        mid: "#ffeb99",
+        outer: "#ff9933",
+      },
+      // Blue-white ice meteor
+      {
+        core: "#ffffff",
+        mid: "#aaddff",
+        outer: "#4488ff",
+      },
+      // Purple cosmic meteor
+      {
+        core: "#ffffff",
+        mid: "#ddaaff",
+        outer: "#aa44ff",
+      },
+      // Green-white aurora meteor
+      {
+        core: "#ffffff",
+        mid: "#aaffcc",
+        outer: "#44ff88",
+      },
+    ];
+
+    this.colors =
+      this.colorSchemes[Math.floor(Math.random() * this.colorSchemes.length)];
+
+    // Start positions
+    const startSide = Math.random();
+    if (startSide < 0.7) {
+      this.x = Math.random() * this.containerRect.width;
+      this.y = -100;
+      this.angle = Math.PI / 2 + (Math.random() - 0.5) * 0.6;
+    } else if (startSide < 0.85) {
+      this.x = -100;
+      this.y = Math.random() * this.containerRect.height * 0.3;
+      this.angle = Math.PI / 4 + Math.random() * 0.4;
+    } else {
+      this.x = this.containerRect.width + 100;
+      this.y = Math.random() * this.containerRect.height * 0.3;
+      this.angle = (Math.PI * 3) / 4 + Math.random() * 0.4;
     }
 
-    const centerX = this.containerRect.width / 2 + (Math.random() - 0.5) * 200;
-    const centerY = this.containerRect.height / 2 + (Math.random() - 0.5) * 200;
-    this.angle =
-      Math.atan2(centerY - this.y, centerX - this.x) +
-      (Math.random() - 0.5) * 0.8;
     this.dx = Math.cos(this.angle) * this.speed;
     this.dy = Math.sin(this.angle) * this.speed;
 
+    // Trail settings
+    this.trailPoints = [];
+    this.maxTrailLength = 25;
+
+    this.hasBeenOnScreen = false;
+
     this.init();
   }
 
-  getMeteorColors() {
-    const colorSchemes = [
-      {
-        head: "rgba(255, 255, 255, 1)",
-        core: "rgba(255, 230, 150, 0.9)",
-        mid: "rgba(255, 180, 80, 0.7)",
-        outer: "rgba(255, 100, 50, 0.5)",
-        glow: "rgba(255, 200, 100, 0.9)",
-      },
-      {
-        head: "rgba(255, 255, 255, 1)",
-        core: "rgba(180, 220, 255, 0.9)",
-        mid: "rgba(100, 180, 255, 0.7)",
-        outer: "rgba(50, 100, 255, 0.5)",
-        glow: "rgba(100, 180, 255, 0.9)",
-      },
-      {
-        head: "rgba(255, 255, 255, 1)",
-        core: "rgba(220, 180, 255, 0.9)",
-        mid: "rgba(200, 100, 255, 0.7)",
-        outer: "rgba(180, 50, 255, 0.5)",
-        glow: "rgba(200, 150, 255, 0.9)",
-      },
-      {
-        head: "rgba(255, 255, 255, 1)",
-        core: "rgba(180, 255, 200, 0.9)",
-        mid: "rgba(80, 255, 150, 0.7)",
-        outer: "rgba(50, 200, 100, 0.5)",
-        glow: "rgba(150, 255, 180, 0.9)",
-      },
-    ];
-    return colorSchemes[this.colorType];
-  }
-
   init() {
-    const size = Math.random() * 4 + 10;
-    const colors = this.colors;
-
-    const head = document.createElement("div");
-    head.style.width = `${size}px`;
-    head.style.height = `${size}px`;
-    head.style.borderRadius = "50%";
-    head.style.background = `
-      radial-gradient(
-        circle at 30% 30%,
-        ${colors.head} 0%,
-        ${colors.core} 30%,
-        ${colors.mid} 60%,
-        ${colors.outer} 100%
-      )
+    // Create SVG for smooth gradient trail
+    this.svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+    this.svg.style.cssText = `
+      position: absolute;
+      top: 0;
+      left: 0;
+      width: 100%;
+      height: 100%;
+      pointer-events: none;
+      overflow: visible;
+      z-index: 9;
     `;
-    head.style.boxShadow = `
-      0 0 ${size * 4}px ${colors.glow},
-      0 0 ${size * 2}px rgba(255, 255, 255, 0.8),
-      inset 0 0 ${size * 0.5}px rgba(255, 255, 255, 0.9)
-    `;
-    head.style.position = "absolute";
-    head.style.left = "50%";
-    head.style.top = "50%";
-    head.style.transform = "translate(-50%, -50%)";
-    head.style.zIndex = "3";
-    head.style.filter = "blur(0.5px)";
+    this.svg.setAttribute("width", this.containerRect.width);
+    this.svg.setAttribute("height", this.containerRect.height);
 
-    // Create multi-layer tail
-    this.createTailLayer(size * 3, size * 1.2, colors.core, 1, "1px");
-    this.createTailLayer(size * 5, size * 2, colors.mid, 0.6, "2px");
-    this.createTailLayer(size * 8, size * 3, colors.outer, 0.3, "3px");
+    // Create gradient for trail
+    const defs = document.createElementNS("http://www.w3.org/2000/svg", "defs");
+    const gradient = document.createElementNS(
+      "http://www.w3.org/2000/svg",
+      "linearGradient"
+    );
+    this.gradientId = `meteor-gradient-${Date.now()}-${Math.random()
+      .toString(36)
+      .substr(2, 9)}`;
+    gradient.setAttribute("id", this.gradientId);
+    gradient.setAttribute("gradientUnits", "userSpaceOnUse");
 
-    // Assemble meteor
-    this.element.appendChild(head);
-    this.element.style.left = `${this.x}px`;
-    this.element.style.top = `${this.y}px`;
-    this.element.style.zIndex = "10";
-    this.element.style.filter = "blur(0.5px)";
+    // Gradient stops for smooth colored fade
+    const stops = [
+      { offset: "0%", color: this.colors.core, opacity: "1" },
+      { offset: "30%", color: this.colors.mid, opacity: "0.8" },
+      { offset: "60%", color: this.colors.outer, opacity: "0.5" },
+      { offset: "100%", color: this.colors.outer, opacity: "0" },
+    ];
 
-    this.head = head;
-    this.size = size;
-
-    this.container.appendChild(this.element);
-
-    this.createTrailParticles();
-  }
-
-  createTailLayer(length, width, color, opacity, blur) {
-    const tail = document.createElement("div");
-    const tailAngle = Math.atan2(this.dy, this.dx) + Math.PI;
-
-    tail.style.width = `${length}px`;
-    tail.style.height = `${width}px`;
-    tail.style.position = "absolute";
-    tail.style.left = "50%";
-    tail.style.top = "50%";
-    tail.style.transformOrigin = "left center";
-    tail.style.transform = `translate(0, -50%) rotate(${tailAngle}rad)`;
-    tail.style.background = `linear-gradient(to right, 
-      ${color} 0%, 
-      ${color.replace(")", ", 0.8)").replace("rgba", "rgba")} 20%,
-      ${color.replace(")", ", 0.4)").replace("rgba", "rgba")} 50%,
-      ${color.replace(")", ", 0.1)").replace("rgba", "rgba")} 80%,
-      transparent 100%)`;
-    tail.style.opacity = opacity;
-    tail.style.filter = `blur(${blur})`;
-    tail.style.pointerEvents = "none";
-    tail.style.zIndex = "2";
-    tail.style.borderRadius = "0 50% 50% 0";
-
-    this.element.appendChild(tail);
-    this.tail = tail;
-  }
-
-  createTrailParticles() {
-    for (let i = 0; i < 5; i++) {
-      this.addTrailParticle();
-    }
-  }
-
-  addTrailParticle() {
-    const particle = document.createElement("div");
-    const size = Math.random() * 2 + 1;
-    const colors = this.colors;
-
-    particle.style.width = `${size}px`;
-    particle.style.height = `${size}px`;
-    particle.style.borderRadius = "50%";
-    particle.style.background = colors.mid;
-    particle.style.position = "absolute";
-    particle.style.left = `${this.x}px`;
-    particle.style.top = `${this.y}px`;
-    particle.style.boxShadow = `0 0 ${size * 3}px ${colors.glow}`;
-    particle.style.opacity = "0.7";
-    particle.style.zIndex = "1";
-    particle.style.pointerEvents = "none";
-
-    this.container.appendChild(particle);
-
-    this.particles.push({
-      element: particle,
-      life: 1.0,
-      x: this.x,
-      y: this.y,
-      vx: (Math.random() - 0.5) * 0.5,
-      vy: (Math.random() - 0.5) * 0.5,
-      size: size,
-    });
-  }
-
-  update() {
-    this.x += this.dx;
-    this.y += this.dy;
-    this.life -= 0.005;
-
-    this.element.style.left = `${this.x}px`;
-    this.element.style.top = `${this.y}px`;
-    this.element.style.opacity = this.life;
-
-    // Update tail direction
-    const tailAngle = Math.atan2(this.dy, this.dx) + Math.PI;
-    const tails = this.element.querySelectorAll("div:not(.particle)");
-    tails.forEach((tail) => {
-      if (tail !== this.head) {
-        tail.style.transform = `translate(0, -50%) rotate(${tailAngle}rad)`;
-        tail.style.opacity = this.life;
-      }
+    stops.forEach((stop) => {
+      const stopEl = document.createElementNS(
+        "http://www.w3.org/2000/svg",
+        "stop"
+      );
+      stopEl.setAttribute("offset", stop.offset);
+      stopEl.setAttribute("stop-color", stop.color);
+      stopEl.setAttribute("stop-opacity", stop.opacity);
+      gradient.appendChild(stopEl);
     });
 
-    if (Math.random() < 0.3) {
-      this.addTrailParticle();
+    defs.appendChild(gradient);
+    this.svg.appendChild(defs);
+
+    // Create path for trail
+    this.trailPath = document.createElementNS(
+      "http://www.w3.org/2000/svg",
+      "path"
+    );
+    this.trailPath.setAttribute("fill", "none");
+    this.trailPath.setAttribute("stroke", `url(#${this.gradientId})`);
+    this.trailPath.setAttribute("stroke-linecap", "round");
+    this.trailPath.setAttribute("stroke-linejoin", "round");
+
+    const headSize = Math.random() * 2 + 2.5;
+    this.headSize = headSize;
+    this.trailPath.setAttribute("stroke-width", headSize * 2);
+    this.trailPath.style.filter = `blur(${headSize * 0.4}px)`;
+
+    this.svg.appendChild(this.trailPath);
+    this.container.appendChild(this.svg);
+
+    // Meteor head - use absolute positioning like the SVG
+    this.head = document.createElement("div");
+    this.head.style.cssText = `
+      position: absolute;
+      width: ${headSize}px;
+      height: ${headSize}px;
+      border-radius: 50%;
+      background: ${this.colors.core};
+      box-shadow: 0 0 ${headSize * 3}px ${this.colors.mid},
+                  0 0 ${headSize * 5}px ${this.colors.outer};
+      pointer-events: none;
+      z-index: 10;
+      transform: translate(-50%, -50%);
+    `;
+
+    this.container.appendChild(this.head);
+
+    // Initialize trail
+    for (let i = 0; i < 3; i++) {
+      this.trailPoints.push({ x: this.x, y: this.y });
+    }
+  }
+
+  isOnScreen() {
+    const buffer = 50;
+    return (
+      this.x > -buffer &&
+      this.x < this.containerRect.width + buffer &&
+      this.y > -buffer &&
+      this.y < this.containerRect.height + buffer
+    );
+  }
+
+  isOffScreen() {
+    const buffer = 200;
+    return (
+      this.x < -buffer ||
+      this.x > this.containerRect.width + buffer ||
+      this.y < -buffer ||
+      this.y > this.containerRect.height + buffer
+    );
+  }
+
+  updateTrail() {
+    // Add current position to trail
+    this.trailPoints.unshift({ x: this.x, y: this.y });
+
+    // Limit trail length
+    if (this.trailPoints.length > this.maxTrailLength) {
+      this.trailPoints.pop();
     }
 
-    // Update existing particles with pixel positioning
-    for (let i = this.particles.length - 1; i >= 0; i--) {
-      const p = this.particles[i];
-      p.life -= 0.02;
-      p.x += p.vx;
-      p.y += p.vy;
+    // Update SVG path with smooth curves
+    if (this.trailPoints.length >= 2) {
+      let pathData = `M ${this.trailPoints[0].x} ${this.trailPoints[0].y}`;
 
-      p.element.style.left = `${p.x}px`;
-      p.element.style.top = `${p.y}px`;
-      p.element.style.opacity = p.life;
-      p.element.style.transform = `scale(${p.life})`;
+      // Use smooth curves
+      for (let i = 1; i < this.trailPoints.length - 1; i++) {
+        const curr = this.trailPoints[i];
+        const next = this.trailPoints[i + 1];
+        const midX = (curr.x + next.x) / 2;
+        const midY = (curr.y + next.y) / 2;
+        pathData += ` Q ${curr.x} ${curr.y} ${midX} ${midY}`;
+      }
 
-      if (p.life <= 0) {
-        p.element.remove();
-        this.particles.splice(i, 1);
+      // Final point
+      if (this.trailPoints.length > 1) {
+        const last = this.trailPoints[this.trailPoints.length - 1];
+        pathData += ` L ${last.x} ${last.y}`;
+      }
+
+      this.trailPath.setAttribute("d", pathData);
+
+      // Update gradient position for directional effect
+      const gradient = document.getElementById(this.gradientId);
+      if (gradient) {
+        gradient.setAttribute("x1", this.x);
+        gradient.setAttribute("y1", this.y);
+        const lastPoint = this.trailPoints[this.trailPoints.length - 1];
+        gradient.setAttribute("x2", lastPoint.x);
+        gradient.setAttribute("y2", lastPoint.y);
       }
     }
+  }
 
+  update(deltaTime) {
+    // Use deltaTime for consistent movement
+    const dt = Math.min(deltaTime / 16.67, 2);
+
+    // Update position
+    this.x += this.dx * dt;
+    this.y += this.dy * dt;
+
+    // Track screen presence
+    if (!this.hasBeenOnScreen && this.isOnScreen()) {
+      this.hasBeenOnScreen = true;
+    }
+
+    // Fade when off screen
+    if (this.hasBeenOnScreen && this.isOffScreen()) {
+      this.life -= this.fadeSpeed * 3 * dt;
+    }
+
+    // Update head position using left/top (same coordinate system as SVG)
+    this.head.style.left = `${this.x}px`;
+    this.head.style.top = `${this.y}px`;
+    this.head.style.opacity = this.life;
+
+    // Update SVG trail opacity
+    this.svg.style.opacity = this.life;
+
+    // Update trail
+    this.updateTrail();
+
+    // Check if should be removed
     if (
-      this.x < -50 ||
-      this.x > this.containerRect.width + 50 ||
-      this.y < -50 ||
-      this.y > this.containerRect.height + 50 ||
-      this.life <= 0
+      this.life <= 0 ||
+      (this.hasBeenOnScreen && this.isOffScreen() && this.life < 0.3)
     ) {
-      // Fade out particles
-      this.particles.forEach((p) => {
-        p.element.style.transition = "opacity 0.5s";
-        p.element.style.opacity = "0";
-        setTimeout(() => p.element.remove(), 500);
-      });
       this.remove();
       return false;
     }
+
     return true;
   }
 
   remove() {
-    if (this.life > 0.3) {
-      this.createExplosion();
+    if (this.svg && this.svg.parentNode) {
+      this.svg.remove();
     }
-
-    setTimeout(() => {
-      this.element.remove();
-    }, 300);
-  }
-
-  createExplosion() {
-    for (let i = 0; i < 8; i++) {
-      const particle = document.createElement("div");
-      const size = Math.random() * 3 + 2;
-      const colors = this.colors;
-
-      particle.style.width = `${size}px`;
-      particle.style.height = `${size}px`;
-      particle.style.borderRadius = "50%";
-      particle.style.background = colors.core;
-      particle.style.position = "absolute";
-      particle.style.left = `${this.x}px`;
-      particle.style.top = `${this.y}px`;
-      particle.style.boxShadow = `0 0 ${size * 4}px ${colors.glow}`;
-      particle.style.opacity = "0.8";
-      particle.style.zIndex = "2";
-
-      this.container.appendChild(particle);
-
-      // Animate explosion
-      const angle = (i / 8) * Math.PI * 2;
-      const distance = Math.random() * 20 + 10;
-      const duration = Math.random() * 500 + 500;
-
-      particle.animate(
-        [
-          {
-            transform: "translate(0, 0) scale(1)",
-            opacity: 0.8,
-          },
-          {
-            transform: `translate(${Math.cos(angle) * distance}px, ${
-              Math.sin(angle) * distance
-            }px) scale(0.1)`,
-            opacity: 0,
-          },
-        ],
-        {
-          duration: duration,
-          easing: "cubic-bezier(0.4, 0, 0.2, 1)",
-        }
-      ).onfinish = () => particle.remove();
+    if (this.head && this.head.parentNode) {
+      this.head.remove();
     }
   }
 }

src/js/animation/starBackground.js

@@ -3,6 +3,32 @@ import Meteor from "./Meteor.js";
 
 const starInstances = [];
 const meteorInstances = [];
+let lastTime = performance.now();
+let isTabVisible = true;
+let animationFrameId = null;
+
+// Track tab visibility to prevent spawning when hidden
+document.addEventListener("visibilitychange", () => {
+  isTabVisible = !document.hidden;
+
+  // If tab becomes visible after being hidden, clean up excess meteors
+  if (isTabVisible && meteorInstances.length > 3) {
+    // Remove excess meteors
+    const excess = meteorInstances.length - 3;
+    for (let i = 0; i < excess; i++) {
+      if (meteorInstances[i]) {
+        meteorInstances[i].remove();
+      }
+    }
+    meteorInstances.splice(0, excess);
+  }
+
+  // Resume animation loop if it stopped
+  if (isTabVisible && !animationFrameId) {
+    lastTime = performance.now();
+    animate();
+  }
+});
 
 function createStars() {
   const stars = document.getElementById("stars");
@@ -34,7 +60,12 @@ function injectStarCSS() {
 }
 
 function trySpawnMeteor() {
-  const spawnChance = 0.12;
+  // Only spawn if tab is visible and not too many meteors
+  if (!isTabVisible || meteorInstances.length >= 2) {
+    return;
+  }
+
+  const spawnChance = 0.15;
   if (Math.random() < spawnChance) {
     const stars = document.getElementById("stars");
     const newMeteor = new Meteor(stars);
@@ -42,40 +73,89 @@ function trySpawnMeteor() {
   }
 }
 
-function animateStars() {
+function animate() {
+  const currentTime = performance.now();
+  const deltaTime = currentTime - lastTime;
+  lastTime = currentTime;
+
+  // Cap deltaTime to prevent huge jumps when tab is hidden
+  const cappedDelta = Math.min(deltaTime, 100);
+
+  // Update stars with delta time
   starInstances.forEach((star) => star.update());
 
   // Update meteors and remove dead ones
   for (let i = meteorInstances.length - 1; i >= 0; i--) {
-    if (!meteorInstances[i].update()) {
+    if (!meteorInstances[i].update(cappedDelta)) {
       meteorInstances.splice(i, 1);
     }
   }
 
-  requestAnimationFrame(animateStars);
+  animationFrameId = requestAnimationFrame(animate);
 }
 
 function createMeteorBurst() {
-  for (let i = 0; i < 3; i++) {
+  // Only burst if tab is visible
+  if (!isTabVisible) return;
+
+  // Limit burst size
+  const burstSize = Math.min(2, 3 - meteorInstances.length);
+
+  for (let i = 0; i < burstSize; i++) {
     setTimeout(() => {
-      const stars = document.getElementById("stars");
-      const newMeteor = new Meteor(stars);
-      meteorInstances.push(newMeteor);
-    }, i * 200);
+      if (isTabVisible && meteorInstances.length < 3) {
+        const stars = document.getElementById("stars");
+        const newMeteor = new Meteor(stars);
+        meteorInstances.push(newMeteor);
+      }
+    }, i * 300);
   }
 }
 
+let spawnInterval = null;
+let burstInterval = null;
+
 function init() {
   injectStarCSS();
   createStars();
-  animateStars();
+  lastTime = performance.now();
+  animate();
 
-  setInterval(trySpawnMeteor, 2000);
-  setInterval(createMeteorBurst, 15000);
+  // Longer interval for spawning
+  spawnInterval = setInterval(() => {
+    if (isTabVisible) {
+      trySpawnMeteor();
+    }
+  }, 3000); // Every 3 seconds instead of 2
+
+  // Longer interval for bursts
+  burstInterval = setInterval(() => {
+    if (isTabVisible) {
+      createMeteorBurst();
+    }
+  }, 20000); // Every 20 seconds instead of 15
 }
 
+// Cleanup function
+function cleanup() {
+  if (animationFrameId) {
+    cancelAnimationFrame(animationFrameId);
+  }
+  if (spawnInterval) {
+    clearInterval(spawnInterval);
+  }
+  if (burstInterval) {
+    clearInterval(burstInterval);
+  }
+}
+
+// Handle page unload
+window.addEventListener("beforeunload", cleanup);
+
 if (document.readyState === "loading") {
   document.addEventListener("DOMContentLoaded", init);
 } else {
   init();
 }
+
+export { cleanup };