// Use a single Boid
Boid b;

void setup() {

    // Setup our environment
    size(600, 400);
    colorMode(RGB, 255, 255, 255, 100);
    smooth();
    
    // We'll start our boid in the center of the screen. The parameters
    // for our boid:
    //
    //  Vector3D  => Starting location
    //  5.0f      => Maximum Boid Speed
    //  0.1f      => Maximum Accerlerating Force
    b = new Boid(new Vector3D(width / 2, height / 2, 0), 5.0f, 0.1f);
    
}

void draw() {

    // clear the background
    background(0);
    
    // draw an ellipse around our mouse
    fill(150);
    noStroke();
    ellipse(mouseX, mouseY, 30, 30);
    
    // let our boid seek the mouse
    b.seek(new Vector3D(mouseX, mouseY, 0));
    
    // run the boid simulation
    b.simulate();
    
}