Rocket.pde

class Rocket {

  PVector position;
  PVector velocity;
  PVector acceleration;

  float size;

  Rocket(PVector location) {
    acceleration = new PVector();
    velocity = new PVector();
    position = location.get();
    size = 4;
  }

  void applyForce(PVector f) {
    acceleration.add(f);
  }

  void update() {
    velocity.add(acceleration);
    position.add(velocity);
    acceleration.mult(0);
  }

  void display() {
    float theta = velocity.heading2D() + PI/2;
    fill(200, 100);
    stroke(0);
    pushMatrix();
    translate(position.x, position.y);
    rotate(theta);

    // Thrusters
    rectMode(CENTER);
    fill(0);
    rect(-size/2, size*2, size/2, size);
    rect(size/2, size*2, size/2, size);

    // Fuselage
    fill(175);
    beginShape(TRIANGLES);
    vertex(0, -size*2);
    vertex(-size, size*2);
    vertex(size, size*2);
    endShape();

    popMatrix();
  }

}