generate particle

let particles=[]

// let colors = ["#7dce82","#ff8360","#fedc97"]

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(0);

  for(let i=0;i<300;i++){

    let newP = new Particle({

      // p: createVector(random(width),random(height)),

      // p: createVector(0,i),

      v: createVector(random(-2,2),random(-2,2)).mult(2),

      p: createVector(width/2,height/2),

      // v: createVector(1,0),

      color:random(255),

      a: createVector(0,0),

      r: random(3)*random()

    })

    particles.push(newP)

  }

}

​

function draw() {

  if (mouseIsPressed){

    let newP = new Particle({

      p: createVector(random(width),random(height)),

      // p: createVector(0,i),

      v: createVector(random(-2,2),random(-2,2)),

      // p: createVector(mouseX,mouseY),

      // v: createVector(1,0),

      a: createVector(0,0),

      r: random(3)*random()

    })

    particles.push(newP)

  }

  particles.forEach(p=>{

    p.update()

    p.draw()

  })

  // p.add(v)

  // v.add(a)

  // v.x+=sin(p.y/10)*0.5

  // v.y+=sin(p.y/20)*0.5

  // v.x =random(-5,5)

  // v.y =random(-5,5)

  // fill(p.x/3,p.y/3,frameCount)

  // noStroke()

  // circle(p.x,p.y, r);

}