class Enemy
{
  PVector pos;
  PVector vel;
  float radius;
  int type;
  void draw()
  {
    fill(COLORS[type]);
    noStroke();
    ellipse(pos.x, pos.y, radius, radius);
  }
  void tick()
  {
    pos.add(vel);
    vel.mult(ENEMY_DRAG);
    vel.y += ENEMY_GRAVITY;
  }
  Enemy(PVector p, int lev)
  {
    pos = new PVector(p.x, p.y);
    vel = new PVector(0, 0);
    type = lev;
    radius = ENEMY_RADIUS;
  }
}
class Shell extends Enemy
{
  Shell(PVector p, int lev)  
  {
    super(p, lev);
    radius = SHELL_RADIUS;
  }
  void draw()
  {
    noStroke();
    if((power_progress_meter > 1 && type <= powerlevel+1) || type <= powerlevel)
    stroke(COLORS[type]);

    fill(blendColors(color(0),COLORS[type], 0.3));
    ellipse(pos.x, pos.y, radius, radius);
    noStroke();
    fill(blendColors(color(0),COLORS[type], 0.4));
    ellipse(pos.x + radius/3, pos.y + radius/3, radius/3, radius/3);
    fill(blendColors(blendColors(color(0),COLORS[type], 0.3), color(255), 0.3));
    ellipse(pos.x - radius/3, pos.y - radius/3, radius/3, radius/3);
  }
}

class PlayerBullet
{
  PVector pos;
  PVector vel;
  void draw()
  {
    noStroke();
    fill(255);
    ellipse(pos.x, pos.y, 3, 3);
  }
  PlayerBullet(PVector p)
  {
    pos = new PVector(p.x, p.y);
    vel = new PVector(0, -5);
  }
}

class EnemyBullet
{
}