class Particle
{
  vec loc;
  vec vel;
  //color c;
  Particle(float x, float y){
    loc = new vec(x,y);
    //this.c = c;
    vel = new vec();
  }
  void draw(){
    if(loc.x<50){
      loc.x = 50;
      vec tempVec = new vec();
      tempVec.disp(180-(vel.ang()-180), vel.mag());
      vel = new vec(tempVec.x, tempVec.y);
    }
    if(loc.x>width-50){
      loc.x=width-50;
      vec tempVec = new vec();
      tempVec.disp(0-(vel.ang()), vel.mag());
      vel = new vec(tempVec.x, tempVec.y);
    }
    if(loc.y<50){
      loc.y=50;
      vec tempVec = new vec();
      tempVec.disp(270-(vel.ang()-270), vel.mag());
      vel = new vec(tempVec.x, tempVec.y);
    }
    if(loc.y>height-50){
      loc.y=height-50;
      vec tempVec = new vec();
      tempVec.disp(90-(vel.ang()-90), vel.mag());
      vel = new vec(tempVec.x, tempVec.y);
    }
    vel.mul(0.9);
    loc.add(vel);
    //rect(loc.x, loc.y,1,1);
  }
  void move(vec b){
  vel = new vec(b.x,b.y);
}
}