/* Handle bullets */
  for (var i = 0; i < self.bullets.length; i++) {
    bullet_onFrame(self.bullets[i]);
    /* Destroy offscreen bullets */
    if (!mc_onScreen(self.bullets[i].mc)) {
      bullet_destroy(self.bullets[i]);
      self.bullets.split(i, 1);
      continue;
    }
    /* Handle enemy collision */
    for (var j = 0; j < self.enemies.length; j++) {
      if (collision(self.bullets[i], self.enemies[j])) {
        bullet_destroy(self.bullets[i]);
        self.bullets.splice(i, 1);
        enemy_destroy(self.enemies[j]);
        self.enemies.splice(j, 1);
        /* TODO: Death animation, score up */
        break;
      }
    }
    if (j < self.enemies.length) continue;
    /* Handle platform collision */
    for (var j = 0; j < self.platforms.length; j++) {
      if (collision(self.bullets[i], self.platforms[j])) {
        bullet_destroy(self.bullets[i]);
        self.bullets.splice(i, 1);
        break;
      }
    }
  }