class Blob
{
  // max velocity
  float vmax;
  // max acceleration
  float amax;
  // max repulsion speed
  float rmax;
  // current x coordinate
  float x;
  // current y coordinate
  float y;
  // current velocity in the x direction
  float vX;
  // current velocity in the y direction
  float vY;
  String type;
  
  Blob(float X, float Y, String Type)
  {
    type = Type;
    x = X;
    y = Y;
    vX = 0;
    vY = 0;
    amax = 0.4;
    rmax = 0.5;
    
    if( type == "A") 
    {
      vmax = 10;
    }
    else
    {
      vmax = 1;
    }
  }

void display()
{
  if (type == "A" )
  {
    stroke(200, 255, 128);
  }
  else
  {
    stroke(0,0,0);
  }
  strokeWeight(vmax+1);
  point(x,y);
}

void gravitate(float gX, float gY)
{
  float theta = atan((gY-y)/(gX-x));
  float aX = abs(gX-x)/(gX-x)*amax*cos(theta)*abs(gX-x)/1000;
  float aY = abs(gY-y)/(gY-y)*sqrt(pow(amax,2)-pow(aX,2))*abs(gY-y)/1000;
  
  vX = aX + vX;
  vY = aY + vY;
  
  truncate();

}

void truncate()
{
  
}

void repulse()
{

}

void move()
{
  x = vX + x;
  y = vY + y;
}

}