public SlimefunBootsListener(SlimefunPlugin plugin) {
    plugin.getServer().getPluginManager().registerEvents(this, plugin);

    cancelledEvents.put("ENDER_BOOTS", e -> e instanceof EntityDamageByEntityEvent && ((EntityDamageByEntityEvent) e).getDamager() instanceof EnderPearl);

    cancelledEvents.put("BOOTS_OF_THE_STOMPER", e -> {
        if (e.getCause() == DamageCause.FALL) {
            stomp(e);
            return true;
        }

        return false;
    });

    cancelledEvents.put("SLIME_BOOTS", e -> e.getCause() == DamageCause.FALL);

    cancelledEvents.put("SLIME_STEEL_BOOTS", e -> e.getCause() == DamageCause.FALL);
}
 

@Override
public void applyPostEvent(MatchPlayer player, boolean force, List<ItemStack> displacedItems) {
  Player bukkitPlayer = player.getBukkit();
  for (EnderPearl pearl : bukkitPlayer.getWorld().getEntitiesByClass(EnderPearl.class)) {
    if (pearl.getShooter() == bukkitPlayer) {
      pearl.setShooter(null);
    }
  }
}
 

@EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
public void clearActiveEnderPearls(final PlayerDeathEvent event) {
  for (Entity entity : event.getEntity().getWorld().getEntitiesByClass(EnderPearl.class)) {
    if (((EnderPearl) entity).getShooter() == event.getEntity()) {
      entity.remove();
    }
  }
}
 

@Override
public void apply(MatchPlayer player, boolean force, ItemKitApplicator items) {
    Player bukkitPlayer = player.getBukkit();
    for(EnderPearl pearl : bukkitPlayer.getWorld().getEntitiesByClass(EnderPearl.class)) {
        if(pearl.getShooter() == bukkitPlayer) {
            pearl.setShooter(null);
        }
    }
}
 

@EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
public void clearActiveEnderPearls(final PlayerDeathEvent event) {
    for(Entity entity : event.getEntity().getWorld().getEntitiesByClass(EnderPearl.class)) {
        if(((EnderPearl) entity).getShooter() == event.getEntity()) {
            entity.remove();
        }
    }
}
 

@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);
        }
    };
}
 

@SuppressWarnings("unchecked")
public <T extends Projectile> T launchProjectile(Class<? extends T> projectile, Vector velocity) {
    net.minecraft.world.World world = ((CraftWorld) getWorld()).getHandle();
    net.minecraft.entity.Entity launch = null;

    if (Snowball.class.isAssignableFrom(projectile)) {
        launch = new net.minecraft.entity.projectile.EntitySnowball(world, getHandle());
    } else if (Egg.class.isAssignableFrom(projectile)) {
        launch = new net.minecraft.entity.projectile.EntityEgg(world, getHandle());
    } else if (EnderPearl.class.isAssignableFrom(projectile)) {
        launch = new net.minecraft.entity.item.EntityEnderPearl(world, getHandle());
    } else if (Arrow.class.isAssignableFrom(projectile)) {
        launch = new net.minecraft.entity.projectile.EntityArrow(world, getHandle(), 1);
    } else if (ThrownPotion.class.isAssignableFrom(projectile)) {
        launch = new net.minecraft.entity.projectile.EntityPotion(world, getHandle(), CraftItemStack.asNMSCopy(new ItemStack(Material.POTION, 1)));
    } else if (ThrownExpBottle.class.isAssignableFrom(projectile)) {
        launch = new net.minecraft.entity.item.EntityExpBottle(world, getHandle());
    } else if (Fish.class.isAssignableFrom(projectile) && getHandle() instanceof net.minecraft.entity.player.EntityPlayer) {
        launch = new net.minecraft.entity.projectile.EntityFishHook(world, (net.minecraft.entity.player.EntityPlayer) getHandle());
    } else if (Fireball.class.isAssignableFrom(projectile)) {
        Location location = getEyeLocation();
        Vector direction = location.getDirection().multiply(10);

        if (SmallFireball.class.isAssignableFrom(projectile)) {
            launch = new net.minecraft.entity.projectile.EntitySmallFireball(world, getHandle(), direction.getX(), direction.getY(), direction.getZ());
        } else if (WitherSkull.class.isAssignableFrom(projectile)) {
            launch = new net.minecraft.entity.projectile.EntityWitherSkull(world, getHandle(), direction.getX(), direction.getY(), direction.getZ());
        } else {
            launch = new net.minecraft.entity.projectile.EntityLargeFireball(world, getHandle(), direction.getX(), direction.getY(), direction.getZ());
        }

        ((net.minecraft.entity.projectile.EntityFireball) launch).projectileSource = this;
        launch.setLocationAndAngles(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
    }

    Validate.notNull(launch, "Projectile not supported");

    if (velocity != null) {
        ((T) launch.getBukkitEntity()).setVelocity(velocity);
    }

    world.spawnEntityInWorld(launch);
    return (T) launch.getBukkitEntity();
}
 

@Override
public void onShootBow(EntityShootBowEvent event, DelayedPlayerDetails details) {
	Entity perl = event.getEntity().launchProjectile(EnderPearl.class);
	perl.setVelocity(event.getProjectile().getVelocity());
	event.setProjectile(perl);
}