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@fewlinesofcode
Created June 22, 2020 16:20
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const w = 500;
const h = 500;
const numWalkers = 1000;
let walkers = [];
function setup() {
createCanvas(w, h);
background(255);
stroke(0, 18);
createWalkers(numWalkers);
}
function createWalkers(num) {
for (let i = 0; i < num; i++) {
let pos = createVector(
random(width),
random(height)
);
walkers.push(
new Walker(pos, createVector(0, 0))
);
}
}
function mouseClicked() {
background(225);
}
function draw() {
walkers.forEach(
walker => {
if (!walker.isOut()) {
walker.updVelocity();
walker.move();
walker.draw();
}
}
);
}
class Walker {
constructor(pos, v) {
this.pos = pos;
this.prevPos = pos;
this.v = v;
}
isOut() {
return (
this.pos.x < 0
|| this.pos.x > width
|| this.pos.y < 0
|| this.pos.y > height
);
}
updVelocity() {
this.prevPos = createVector(this.pos.x, this.pos.y);
let ms = millis();
this.v.x += Math.sin(this.pos.x);
this.v.y += Math.sin(this.pos.y);
}
move() {
this.pos = p5.Vector.add(this.pos, this.v);
}
draw() {
line(this.prevPos.x, this.prevPos.y, this.pos.x, this.pos.y);
this.prevPos = createVector(this.pos.x, this.pos.y);
}
}
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