95 lines
2.8 KiB
JavaScript
95 lines
2.8 KiB
JavaScript
// Bratonien Glitter Hover Effekt – Explosion folgt dem Cursor
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document.querySelectorAll(".door, .openfield").forEach(elem => {
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let canvas, ctx, particles = [], anim, hovering = false;
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let cursorX = 0, cursorY = 0;
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// Canvas vorbereiten
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function setupCanvas() {
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if (canvas) return;
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canvas = document.createElement("canvas");
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canvas.width = elem.offsetWidth * 1.4;
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canvas.height = elem.offsetHeight * 1.4;
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canvas.style.position = "absolute";
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canvas.style.top = "-20%";
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canvas.style.left = "-20%";
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canvas.style.pointerEvents = "none";
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canvas.style.zIndex = "10";
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elem.appendChild(canvas);
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ctx = canvas.getContext("2d");
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}
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// Cursorposition innerhalb des Elements erfassen
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elem.addEventListener("mousemove", e => {
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const rect = elem.getBoundingClientRect();
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cursorX = (e.clientX - rect.left) * 1.4 - (elem.offsetWidth * 0.2);
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cursorY = (e.clientY - rect.top) * 1.4 - (elem.offsetHeight * 0.2);
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});
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// Partikel hinzufügen (Explosion folgt Cursor)
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function addParticles() {
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const cx = cursorX || canvas.width / 2;
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const cy = cursorY || canvas.height / 2;
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for (let i = 0; i < 4; i++) {
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const angle = Math.random() * Math.PI * 2;
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const speed = Math.random() * 1.5 + 0.3;
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particles.push({
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x: cx,
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y: cy,
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r: Math.random() * 1.3 + 0.2,
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alpha: Math.random() * 0.7 + 0.3,
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vx: Math.cos(angle) * speed,
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vy: Math.sin(angle) * speed,
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life: Math.random() * 120 + 60,
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decay: Math.random() * 0.015 + 0.008
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});
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}
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}
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// Zeichnen
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function draw() {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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if (hovering) addParticles();
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particles.forEach(p => {
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ctx.beginPath();
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const grad = ctx.createRadialGradient(p.x, p.y, 0, p.x, p.y, p.r * 3);
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grad.addColorStop(0, `rgba(200, 170, 73, ${p.alpha})`); // CI-Gold
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grad.addColorStop(0.3, `rgba(255, 240, 200, ${p.alpha * 0.8})`);
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grad.addColorStop(1, "transparent");
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ctx.fillStyle = grad;
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ctx.arc(p.x, p.y, p.r * 3, 0, Math.PI * 2);
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ctx.fill();
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// Bewegung
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p.x += p.vx;
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p.y += p.vy + 0.05;
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p.vx *= 0.98;
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p.vy *= 0.98;
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p.alpha -= p.decay;
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p.life--;
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});
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particles = particles.filter(p => p.life > 0 && p.alpha > 0);
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anim = requestAnimationFrame(draw);
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}
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// Hover starten
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elem.addEventListener("mouseenter", () => {
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setupCanvas();
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hovering = true;
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cancelAnimationFrame(anim);
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draw();
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});
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// Hover beenden
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elem.addEventListener("mouseleave", () => {
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hovering = false;
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setTimeout(() => {
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if (!hovering) {
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cancelAnimationFrame(anim);
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particles = [];
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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}
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}, 300);
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});
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}); |