const CONFIG = { frameRate: 50, duration: 10, gif: true, record: false, width: window.innerWidth, height: window.innerHeight, clearScreen: true, animate: true, interations: 100, }; class ExplosionParticle { constructor(x, y, color) { this.position = createVector(x, y); this.velocity = p5.Vector.random2D(); this.velocity.mult(getRandomRange(3, 9)); this.color = color; this.dampening = 0.99; this.size = getRandomRange(12, 20); this.particleType = Math.round(getRandomRange(1, 3)); } update() { this.position.add(this.velocity); this.velocity.mult(this.dampening); this.size -= 0.5; } display() { const size = Math.round(this.size); if (size >= 1) { fill(`rgb(${this.color.r}, ${this.color.g}, ${this.color.b})`); noStroke(); if (this.particleType == 1) { rect(this.position.x, this.position.y, Math.round(this.size)); } else if (this.particleType == 2) { ellipse(this.position.x, this.position.y, Math.round(this.size)); } else { stroke(`rgb(${this.color.r}, ${this.color.g}, ${this.color.b})`); noFill(); line(this.position.x, this.position.y, this.position.x + getRandomRange(-this.size, this.size), this.position.y + getRandomRange(-this.size, this.size)); } } } } class Explosion { constructor(x, y, color) { this.count = getRandomRange(60, 90); this.lifeTime = getRandomRange(30, 45); this.color = color; this.particles = []; for (let i = 0; i < this.count; i++) { this.particles.push(new ExplosionParticle(x, y, color)); } } dead() { return this.lifeTime <= 0; } update() { this.lifeTime--; for (let particle of this.particles) { particle.update(); } } display() { push(); let color = `rgb(${this.color.r}, ${this.color.g}, ${this.color.b})`; drawingContext.shadowBlur = 25; drawingContext.shadowColor = color; for (let particle of this.particles) { particle.display(); } pop(); } } class Particle { constructor(x, y, mass = 1, color) { this.position = createVector(x, y); this.velocity = p5.Vector.random2D(); this.velocity.mult(getRandomRange(1, 2)); this.acceleration = createVector(); this.mass = mass; this.radius = 30; this.lifeTime = getRandomRange(20, 35); this.color = color; } update() { this.velocity.add(this.acceleration); this.position.add(this.velocity); if (this.edgeCheck) this.checkEdges(); this.acceleration.mult(0); this.lifeTime -= 1; } applyForce(force) { const f = p5.Vector.div(force, this.mass); this.acceleration.add(f); } dead() { return this.lifeTime <= 0; } getSize() { return map(this.lifeTime, 0, 35, 1, 30); } display() { fill(`rgba(${this.color.r}, ${this.color.g}, ${this.color.b}, ${this.lifeTime})`); ellipse(this.position.x, this.position.y, this.getSize()); } } class Emitter { constructor(x, y) { this.velocity = p5.Vector.random2D(); this.velocity.mult(getRandomRange(5, 7)); this.acceleration = createVector(0, 0); this.position = createVector(x, y); this.particles = []; this.force = createVector(0, 0); this.color = random(COLORS); this.exploded = false; this.radius = getRandomRange(10, 25); } emit(count) { for (let i = 0; i < count; i++) { this.particles.push(new Particle(this.position.x, this.position.y, 1, this.color)); } this.emitted = true; } applyForce(force) { if (!this.exploded) { this.acceleration.add(force); const particleForce = force.copy().mult(-1); for (let particle of this.particles) { particle.applyForce(particleForce); } } } wrapEdges() { if (this.position.x > width) { this.position = createVector(0, this.position.y); } if (this.position.x < 0) { this.position = createVector(width, this.position.y); } if (this.position.y > height) { this.position = createVector(this.position.x, 0); } if (this.position.y < 0) { this.position = createVector(this.position.x, height); } } collides(mover) { let dx = mover.position.x - this.position.x; let dy = mover.position.y - this.position.y; let distance = Math.sqrt(dx * dx + dy * dy); return distance <= this.radius; } explode() { this.exploded = true; explosions.push(new Explosion(this.position.x, this.position.y, this.color)); } dead() { return this.particles.length <= 0 && this.exploded; } update() { if (!this.exploded) { this.velocity.add(this.acceleration); this.position.add(this.velocity); this.acceleration.mult(0); } for (let particle of this.particles) { particle.update(); } this.particles = this.particles.filter(p => !p.dead()); } display() { if (!this.exploded) { fill(`rgb(${this.color.r}, ${this.color.g}, ${this.color.b})`); circle(this.position.x, this.position.y, this.radius); } for (let particle of this.particles) { particle.display(); } } } let emitters = []; let emitterCount = 30; let explosions = []; const COLORS = [ {r: 57, g: 212, b: 203}, {r: 57, g: 135, b: 203}, {r: 57, g: 212, b: 121}, {r: 178, g: 117, b: 203} ]; let getRandomNumber; let getRandomRange; function setup() { frameRate(CONFIG.frameRate); createCanvas(CONFIG.width, CONFIG.height); if (!CONFIG.clearScreen) { background(0); } getRandomNumber = (max) => Math.floor(Math.random() * max); getRandomRange = (min, max) => Math.random() * (max - min) + min; for (let i = 0; i < emitterCount; i++) { emitters.push(new Emitter(getRandomNumber(width), getRandomNumber(height))); } if (CONFIG.record) { frameRate(CONFIG.frameRate); createLoop({ duration: CONFIG.duration, gif: CONFIG.gif }); } } function draw() { clear(); if (CONFIG.clearScreen) { background(30); } blendMode(DODGE); const mouse = createVector(mouseX, mouseY); for (let i = 0; i < emitters.length; i++) { const currentEmiter = emitters[i]; for (let j = i + 1; j < emitters.length; j++) { const nextEmitter = emitters[j]; if (currentEmiter.exploded || nextEmitter.exploded) continue; if (currentEmiter.collides(nextEmitter)) { currentEmiter.explode(); nextEmitter.explode(); } } if (!currentEmiter.exploded) { currentEmiter.emit(1); currentEmiter.wrapEdges(); } currentEmiter.update(); currentEmiter.display(); } for (let explosion of explosions) { explosion.update(); explosion.display(); } if (emitters.length < emitterCount) { emitters.push(new Emitter(getRandomNumber(width), getRandomNumber(height))); } emitters = emitters.filter(emitter => !emitter.dead()); explosions = explosions.filter(explosion => !explosion.dead()); // Still image if (!CONFIG.animate) { noLoop(); for (let i = 0; i < CONFIG.interations; i++) { } } }

Rainbow Asteroids