Пример #1
0
  /**
   * When a creeper explodes, reinforcements are launched from him with random velocities by this
   * method.
   *
   * <p>Reinforcements are always launched at a 45 degree angle, a configurable range from the
   * exploding creeper.
   *
   * @param creeper the exploding creeper.
   */
  protected void launchReinforcements(Entity creeper) {
    final int numReinforcements = random(CONFIG.MIN_REINFORCEMENTS, CONFIG.MAX_REINFORCEMENTS);
    for (int i = 0; i < numReinforcements; ++i) {
      // Compute unit velocity vector components, given 45 degree pitch.
      double yaw = 2.0 * Math.PI * Math.random();
      double y = INV_ROOT_2;
      double x = INV_ROOT_2 * Math.cos(yaw);
      double z = INV_ROOT_2 * Math.sin(yaw);

      // Spawn one reinforcement.
      Location origin = creeper.getLocation();
      World world = origin.getWorld();
      Location loc =
          origin.clone().add(CONFIG.REINFORCEMENT_RANGE * x, 0.5, CONFIG.REINFORCEMENT_RANGE * z);
      Creeper reinforcement = (Creeper) world.spawnEntity(loc, EntityType.CREEPER);
      if (reinforcement != null) {
        reinforcement.setMetadata(SPECIAL_KEY, SPECIAL_META);

        double speed = random(CONFIG.MIN_REINFORCEMENT_SPEED, CONFIG.MAX_REINFORCEMENT_SPEED);
        Vector velocity = new Vector(speed * x, speed * y, speed * z);
        reinforcement.setVelocity(velocity);

        // Randomly charge a fraction of creepers.
        if (Math.random() < CONFIG.CHARGED_CHANCE) {
          reinforcement.setPowered(true);
        }
      }
    }
  } // launchReinforcements
Пример #2
0
  @EventHandler
  public void onInteract(PlayerInteractEvent event) {
    if (event.getAction() == Action.LEFT_CLICK_BLOCK
        || event.getAction() == Action.LEFT_CLICK_AIR) { // (2)
      final Player player = event.getPlayer();
      if (player.getItemInHand().getType() == Material.LEATHER) {
        Location loc = player.getLocation();

        Vector vec = calculateVector(loc);

        final Creeper creeper = player.getWorld().spawn(loc, Creeper.class); // (3)
        creeper.setVelocity(vec);
        creeper.setFireTicks(20);
        BukkitRunnable runnable = new CowTask(player.getWorld(), creeper);

        runnable.runTaskTimer(this, 0L, 0L);
      }
    }
  }