class Particle{

  constructor (pos, angle){

    this.w = 2 // laser size

    this.h = 60

    this.pos = createVector(pos.x,pos. y)

    this.vel = p5.Vector.fromAngle(angle) //using ship heading vector

    this.vel.mult(10); 

​

    this.lifetime = 255 //lets the lasers die after a while

  }

  display(){

    stroke(0,255, 125, this.lifetime) 

    fill(226, 252, 210, this.lifetime) 

    //ellipse(this.pos.x, this.pos.y, this.r, this.r)

    rect(this.pos.x, this.pos.y - this.h , this.w , this.h)

  }

  move(){

    this.vel.add(this.accel)

    this.pos.add(this.vel);

    this.lifetime -= 4 

  }

​

  die(){

    return (this.lifetime < 0)

  }

  bounce(){

    //Bounces off the canvas edges, turn in in sketch.js if needed

    if (this.pos.y >= height-this.r) {

      this.pos.y = height-this.r;

      this.vel.y *= -1;

    } else if (this.pos.y <= this.r){

      //this.pos.y = height-this.r; //the reappear at the bottom

       this.pos.y = this.r;

      this.vel.y *= -1;

    }

​

    if (this.pos.x >= width-this.r) {

      this.pos.x = width-this.r;

      this.vel.x *= -1;

    } else if (this.pos.x <= this.r) {

      this.pos.x = this.r;

      this.vel.x *= -1;

    }

  }

}