class Cannon implements Entity
{
  final int framesBetweenSpawns = 3;
  float x, y, radius, strength;
  int lastSpawnTime = -framesBetweenSpawns;
  boolean flip;
  
/*  Bumper(float x, float y, float radius, float strength)
  {
    this.x = x;
    this.y = y;
    this.radius = radius;
    this.strength = strength;
  }*/
  Cannon(float x, float y, float strength)
  {
    this.x = x;
    this.y = y;
    this.radius = cannonAnimation.w*2;
    this.strength = strength;
    this.flip = false;
  }
  Cannon(float x, float y, float strength, boolean flip) {
    this(x,y,strength);
    this.flip = flip;
  }
  void doPhysics0() { 
  }

  void doPhysics1()
  {
    boolean spawnBomb = false;
    for (int i = 0; i < theBouncies.size(); ++ i)
    {
      Bouncy h = (Bouncy)theBouncies.get(i);
      float d = dist(h.x, h.y, x, y);
      if (d < radius + h.collisionRadius)
      {
        playSound(bumperhit);
        float []push = elasticCollision(h.x - x, h.y - y, h.vX, h.vY, strength);
        h.push(push[0], push[1]);
        spawnBomb = true;
      }
    }
    if (spawnBomb && t-lastSpawnTime > framesBetweenSpawns) {
      lastSpawnTime = t;
      int xoff = 30;
      if (flip) xoff = -30;
      Bomb b = new Bomb((int)x+xoff,(int)y-30);
      b.vX = 5; b.vY = -5;
      if (flip) b.vX = -5;
      b.addToLevel();
    }
  }

  void draw()
  {
    /*
    stroke(0, 0, 0);
    if (t - lastBumpTime < bumpNFramesVisible)
      fill(255, 200, 200);
    else
      fill(200, 200, 200);
    ellipse(x, y, radius * 2, radius * 2);
    */
    cannonAnimation.displayCentered(x,y,t,true,4,flip);
  }

  void addToLevel()
  {
    theEntities.add(this);
  }

  void levelStart()
  {
    x += leftBorder;
  }
}