Java Code Examples for org.bukkit.entity.Player#launchProjectile()

@EventHandler
public void onFireballThrow(PlayerInteractEvent event) {
    Player player = event.getPlayer();

    if (!Main.isPlayerInGame(player)) {
        return;
    }

    if (event.getItem() != null) {
        ItemStack stack = event.getItem();
        String unhash = APIUtils.unhashFromInvisibleStringStartsWith(stack, THROWABLE_FIREBALL_PREFIX);
        if (unhash != null && (event.getAction() == Action.RIGHT_CLICK_BLOCK || event.getAction() == Action.RIGHT_CLICK_AIR)) {
            String[] properties = unhash.split(":");
            double damage = Double.parseDouble(properties[2]);
            float explosion = (float) Double.parseDouble(properties[2]);

            Fireball fireball = player.launchProjectile(Fireball.class);
            fireball.setIsIncendiary(false);
            fireball.setYield(explosion);
            Main.registerGameEntity(fireball, Main.getPlayerGameProfile(player).getGame());

            event.setCancelled(true);

            if (stack.getAmount() > 1) {
                stack.setAmount(stack.getAmount() - 1);
            } else {
                player.getInventory().remove(stack);
            }

            player.updateInventory();
        }
    }
}
 

@EventHandler
public void onFireballThrow(PlayerInteractEvent event) {
    Player player = event.getPlayer();

    if (!Main.isPlayerInGame(player)) {
        return;
    }

    if (event.getItem() != null) {
        ItemStack stack = event.getItem();
        String unhash = APIUtils.unhashFromInvisibleStringStartsWith(stack, THROWABLE_FIREBALL_PREFIX);
        if (unhash != null && (event.getAction() == Action.RIGHT_CLICK_BLOCK || event.getAction() == Action.RIGHT_CLICK_AIR)) {
            String[] properties = unhash.split(":");
            double damage = Double.parseDouble(properties[2]);
            float explosion = (float) Double.parseDouble(properties[2]);

            Fireball fireball = player.launchProjectile(Fireball.class);
            fireball.setIsIncendiary(false);
            fireball.setYield(explosion);
            Main.registerGameEntity(fireball, Main.getPlayerGameProfile(player).getGame());

            event.setCancelled(true);

            if (stack.getAmount() > 1) {
                stack.setAmount(stack.getAmount() - 1);
            } else {
                player.getInventory().remove(stack);
            }

            player.updateInventory();
        }
    }
}
 

@Override
public ItemUseHandler getItemHandler() {
    return e -> {
        e.cancel();

        Player p = e.getPlayer();

        if (hasArmor(p.getInventory())) {
            p.launchProjectile(EnderPearl.class);
            p.getWorld().playSound(p.getLocation(), Sound.ENTITY_ENDERMAN_TELEPORT, 1, 1);
        }
    };
}
 

@Override
public boolean effect(Event event, Player player) {
    int slot = player.getInventory().getHeldItemSlot();

    ItemStack potion = player.getInventory().getItem(slot + 1);
    Location loc = player.getLocation();
    if (potion != null && potion.getType().toString().contains("POTION")) {
        ThrownPotion tp = player.launchProjectile(ThrownPotion.class);
        EffectManager.playSound(loc, "ENTITY_GENERIC_EXPLODE", 0.5f, 2f);

        try {
            tp.setItem(potion);
        } catch (IllegalArgumentException ex) {
            ItemStack pt = potion.clone();
            if (potion.getType().equals(Material.POTION) || potion.getType().equals(Material.LINGERING_POTION))
                pt.setType(Material.SPLASH_POTION);
            tp.setItem(pt);
        }

        tp.setBounce(false);
        tp.setVelocity(loc.getDirection().multiply(ProjectileSpeedMultiplier));
        if (!player.getGameMode().equals(GameMode.CREATIVE)) {
            potion.setAmount(potion.getAmount() - 1);
            player.getInventory().setItem(slot + 1, potion);
            player.updateInventory();
        }
        return true;
    } else {
        player.sendMessage(ChatColor.RED + "You need a Potion in the slot to the right of the Potion Launcher!");
        player.getWorld().playEffect(loc, Effect.CLICK1, 5);
    }
    return false;
}
 

private void volley(EntityShootBowEvent e, ItemStack item, int lvl) {
    Player p = (Player) e.getEntity();
    int amount = 1 + 2 * lvl; // Keep amount of arrows uneven, 2 extra arrows in a volley per level.

    Arrow oldArrow = (Arrow) e.getProjectile();
    int fireTicks = oldArrow.getFireTicks();
    int knockbackStrength = oldArrow.getKnockbackStrength();
    boolean critical = oldArrow.isCritical();
    String metadata = oldArrow.getMetadata("ce.bow.enchantment").get(0).asString();

    double angleBetweenArrows = (CONE_DEGREES / (amount - 1)) * Math.PI / 180;
    double pitch = (p.getLocation().getPitch() + 90) * Math.PI / 180;
    double yaw = (p.getLocation().getYaw() + 90 - CONE_DEGREES / 2) * Math.PI / 180;

    // Starting direction values for the cone, each arrow increments it's direction on these values.
    double sZ = Math.cos(pitch);

    for (int i = 0; i < amount; i++) { // spawn all arrows in a cone of 90 degrees (equally distributed).;
        double nX = Math.sin(pitch) * Math.cos(yaw + angleBetweenArrows * i);
        double nY = Math.sin(pitch) * Math.sin(yaw + angleBetweenArrows * i);
        Vector newDir = new Vector(nX, sZ, nY);

        Arrow arrow = p.launchProjectile(Arrow.class);
        arrow.setShooter(p);
        arrow.setVelocity(newDir.normalize().multiply(oldArrow.getVelocity().length())); // Need to make sure arrow has same speed as original arrow.
        arrow.setFireTicks(fireTicks); // Set the new arrows on fire if the original one was 
        arrow.setKnockbackStrength(knockbackStrength);
        arrow.setCritical(critical);

        if (i == 0) {
            if (p.getGameMode().equals(GameMode.CREATIVE))
                arrow.setMetadata("ce.Volley", new FixedMetadataValue(getPlugin(), null)); //Control metadata to prevent players from duplicating arrows
        } else {
            arrow.setMetadata("ce.Volley", new FixedMetadataValue(getPlugin(), null)); //Control metadata to prevent players from duplicating arrows
        }
        arrow.setMetadata("ce.bow.enchantment", new FixedMetadataValue(getPlugin(), metadata));
    }
    oldArrow.remove(); // Remove original arrow.
}
 

@Override
public boolean effect(Event event, Player player) {
    PlayerInteractEvent e = (PlayerInteractEvent) event;
    ItemMeta im = e.getPlayer().getItemInHand().getItemMeta();
    List<String> lore = new ArrayList<String>();
    if (!im.hasLore()) {
        lore.add(spells.get(0));
        im.setLore(lore);
        e.getPlayer().getItemInHand().setItemMeta(im);
    }
    lore = im.getLore();
    int lastElement = lore.size() - 1;

    if (e.getAction().toString().startsWith("LEFT")) {

        int nextSpellIndex = spells.indexOf(lore.get(lastElement)) + 1;

        if (nextSpellIndex == 3)
            nextSpellIndex = 0;

        String nextSpell = spells.get(nextSpellIndex);

        lore.set(lastElement, nextSpell);
        im.setLore(lore);
        e.getPlayer().getItemInHand().setItemMeta(im);

        player.sendMessage(ChatColor.GRAY + "Changed Spell to " + nextSpell.split(": ")[1] + ChatColor.GRAY + ".");
        player.getWorld().playEffect(player.getLocation(), Effect.CLICK1, 10);
    } else if (e.getAction().toString().startsWith("RIGHT")) {

        int spell = -1;
        int cost = -1;
        int cooldown = -1;

        // Get all values
        if (lore.get(lastElement).equals(spells.get(0))) {
            spell = 0;
            cost = WitherCost;
            cooldown = WitherCooldown;
        } else if (lore.get(lastElement).equals(spells.get(1))) {
            spell = 1;
            cost = FireballCost;
            cooldown = FireballCooldown;
        } else if (lore.get(lastElement).equals(spells.get(2))) {
            spell = 2;
            cost = LightningCost;
            cooldown = LightningCooldown;
        }

        // Apply costs
        if (player.getInventory().contains(Fuel, cost) || player.getGameMode().equals(GameMode.CREATIVE)) {
            if (!player.getGameMode().equals(GameMode.CREATIVE)) {
                ItemStack mana = new ItemStack(Fuel, cost);
                player.getInventory().removeItem(mana);
                player.updateInventory();
            }

            Location l = player.getLocation();

            // Apply effect
            if (spell == 0) {
                if (Tools.checkWorldGuard(l, player, "PVP", true)) {
                    WitherSkull ws = player.launchProjectile(WitherSkull.class);
                    ws.setVelocity(l.getDirection().multiply(2));
                    if (!Main.createExplosions)
                        ws.setMetadata("ce.explosive", new FixedMetadataValue(getPlugin(), null));
                    EffectManager.playSound(l, "ENTITY_WITHER_IDLE", 0.5f, 10f);
                } else {
                    EffectManager.playSound(l, "ENTITY_CAT_HISS", 0.3f, 5f);
                }
            } else if (spell == 1) {
                player.launchProjectile(SmallFireball.class).setVelocity(l.getDirection().multiply(1.5));
                EffectManager.playSound(l, "ENTITY_BLAZE_HIT", 0.2f, 0f);
            } else if (spell == 2) {
                Location target = player.getTargetBlock((Set<Material>) null, 20).getLocation();
                player.getWorld().strikeLightning(target);
                if (Tools.checkWorldGuard(l, player, "TNT", true))
                    player.getWorld().createExplosion(target, 1);
                EffectManager.playSound(target, "ENTITY_ENDERDRAGON_GROWL", 0.5f, 2f);
            }

            // Generate the cooldown based on the cooldown value
            generateCooldown(player, cooldown);
        } else {
            player.sendMessage(ChatColor.RED + "You need " + cost + " " + Fuel.toString().toLowerCase().replace("_", " ") + " to cast this spell.");
        }

    }
    return false; // The Staff generates it's own cooldowns, so it always
                  // returns false
}