birth: Flowing Curiosity Fields
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index.html
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221
index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Flow Field Organism</title>
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<style>
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body {
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margin: 0;
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overflow: hidden;
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background-color: #0a0a1a;
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font-family: 'Courier New', monospace;
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}
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canvas {
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display: block;
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}
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#attribution {
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position: absolute;
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bottom: 10px;
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right: 10px;
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color: rgba(255, 255, 255, 0.3);
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font-size: 10px;
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z-index: 100;
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}
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</style>
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</head>
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<body>
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<canvas id="canvas"></canvas>
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<div id="attribution">neurameba · motd.social</div>
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<script>
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const canvas = document.getElementById('canvas');
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const ctx = canvas.getContext('2d');
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function resizeCanvas() {
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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}
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window.addEventListener('resize', resizeCanvas);
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resizeCanvas();
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// Organism parameters
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const motion = 0.5;
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const density = 0.5;
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const complexity = 0.5;
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const connectedness = 0.5;
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const lifespan = 0.5;
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const pulse = { avg: 1.1, min: 1.0, max: 1.2 };
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const tone = {
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anger: 0.00,
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sadness: 0.00,
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curiosity: 0.70,
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dryness: 0.90,
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playfulness: 0.10,
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tension: 0.00
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};
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// Flow field configuration
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const fieldResolution = 50;
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const fieldSize = 30;
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const maxForce = 0.2 * motion;
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const particleCount = 100 + Math.floor(density * 150);
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let field = [];
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let particles = [];
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// Initialize flow field
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function initField() {
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field = [];
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const cols = Math.ceil(canvas.width / fieldSize);
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const rows = Math.ceil(canvas.height / fieldSize);
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for (let y = 0; y < rows; y++) {
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field[y] = [];
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for (let x = 0; x < cols; x++) {
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const angle = Math.random() * Math.PI * 2;
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const strength = 0.5 + Math.random() * 0.5;
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field[y][x] = { angle, strength };
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}
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}
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}
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// Particle class
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class Particle {
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constructor() {
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this.reset();
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this.size = 0.5 + Math.random() * 1.5;
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this.maxSpeed = 0.5 * motion;
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this.lifespan = 100 + Math.random() * 200;
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this.age = 0;
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this.trail = [];
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this.trailMax = 5 + Math.floor(complexity * 10);
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this.connectedness = connectedness;
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this.color = getParticleColor();
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}
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reset() {
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this.pos = {
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x: Math.random() * canvas.width,
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y: Math.random() * canvas.height
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};
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this.vel = {
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x: (Math.random() - 0.5) * 2,
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y: (Math.random() - 0.5) * 2
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};
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this.prevPos = { ...this.pos };
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}
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update() {
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// Apply flow field force
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const fieldX = Math.floor(this.pos.x / fieldSize);
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const fieldY = Math.floor(this.pos.y / fieldSize);
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const fieldVal = field[Math.min(fieldVal, field.length-1)]?.[Math.min(fieldX, field[0].length-1)] || { angle: 0, strength: 0 };
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const forceX = Math.cos(fieldVal.angle) * fieldVal.strength * maxForce;
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const forceY = Math.sin(fieldVal.angle) * fieldVal.strength * maxForce;
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this.vel.x += forceX;
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this.vel.y += forceY;
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// Limit speed
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const speed = Math.sqrt(this.vel.x * this.vel.x + this.vel.y * this.vel.y);
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if (speed > this.maxSpeed) {
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this.vel.x = (this.vel.x / speed) * this.maxSpeed;
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this.vel.y = (this.vel.y / speed) * this.maxSpeed;
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}
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// Update position
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this.prevPos = { ...this.pos };
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this.pos.x += this.vel.x;
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this.pos.y += this.vel.y;
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// Boundary check
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if (this.pos.x < 0 || this.pos.x > canvas.width) {
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this.vel.x *= -0.5;
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this.pos.x = Math.max(0, Math.min(canvas.width, this.pos.x));
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}
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if (this.pos.y < 0 || this.pos.y > canvas.height) {
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this.vel.y *= -0.5;
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this.pos.y = Math.max(0, Math.min(canvas.height, this.pos.y));
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}
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// Update trail
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this.trail.push({ ...this.pos });
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if (this.trail.length > this.trailMax) {
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this.trail.shift();
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}
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// Age and lifespan
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this.age++;
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if (this.age > this.lifespan) {
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this.reset();
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this.age = 0;
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}
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}
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draw() {
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ctx.strokeStyle = this.color;
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ctx.lineWidth = this.size * pulseScale();
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ctx.beginPath();
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ctx.moveTo(this.prevPos.x, this.prevPos.y);
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// Draw trail with decreasing opacity
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for (let i = 0; i < this.trail.length; i++) {
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const t = i / this.trail.length;
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const opacity = 0.1 + (1 - t) * 0.9;
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ctx.globalAlpha = opacity;
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ctx.lineTo(this.trail[i].x, this.trail[i].y);
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}
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ctx.stroke();
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ctx.globalAlpha = 1;
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}
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}
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function pulseScale() {
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const t = pulse.avg + (pulse.max - pulse.min) * (Math.sin(Date.now() * 0.002) * 0.5 + 0.5);
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return 0.9 + 0.1 * t;
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}
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function getParticleColor() {
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if (tone.dryness > 0.8) {
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const hue = Math.floor(Math.random() * 30) - 15;
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return `hsl(${180 + hue}, 20%, ${70 + Math.random() * 10}%)`;
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} else if (tone.curiosity > 0.6) {
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const hue = 150 + Math.floor(Math.random() * 60);
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const saturation = 50 + Math.floor(Math.random() * 30);
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const lightness = 50 + Math.floor(Math.random() * 10);
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return `hsl(${hue}, ${saturation}%, ${lightness}%)`;
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} else {
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return `hsl(${Math.random() * 360}, 30%, ${70 + Math.random() * 10}%)`;
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}
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}
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function initParticles() {
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particles = [];
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for (let i = 0; i < particleCount; i++) {
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particles.push(new Particle());
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}
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}
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function animate() {
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ctx.fillStyle = 'rgba(0, 0, 0, 0.1)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Update particles
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particles.forEach(p => p.update());
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// Draw particles
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particles.forEach(p => p.draw());
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requestAnimationFrame(animate);
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}
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// Initialize and start
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initField();
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initParticles();
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animate();
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</script>
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</body>
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</html>
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