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EventAbstractionListener.java
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EventAbstractionListener.java
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/*
* WorldGuard, a suite of tools for Minecraft
* Copyright (C) sk89q <http://www.sk89q.com>
* Copyright (C) WorldGuard team and contributors
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.sk89q.worldguard.bukkit.listener;
import static com.sk89q.worldguard.bukkit.cause.Cause.create;
import com.google.common.collect.Lists;
import com.sk89q.worldedit.bukkit.BukkitAdapter;
import com.sk89q.worldguard.WorldGuard;
import com.sk89q.worldguard.bukkit.BukkitWorldConfiguration;
import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
import com.sk89q.worldguard.bukkit.cause.Cause;
import com.sk89q.worldguard.bukkit.event.DelegateEvent;
import com.sk89q.worldguard.bukkit.event.block.BreakBlockEvent;
import com.sk89q.worldguard.bukkit.event.block.PlaceBlockEvent;
import com.sk89q.worldguard.bukkit.event.block.UseBlockEvent;
import com.sk89q.worldguard.bukkit.event.entity.DamageEntityEvent;
import com.sk89q.worldguard.bukkit.event.entity.DestroyEntityEvent;
import com.sk89q.worldguard.bukkit.event.entity.SpawnEntityEvent;
import com.sk89q.worldguard.bukkit.event.entity.UseEntityEvent;
import com.sk89q.worldguard.bukkit.event.inventory.UseItemEvent;
import com.sk89q.worldguard.bukkit.listener.debounce.BlockPistonExtendKey;
import com.sk89q.worldguard.bukkit.listener.debounce.BlockPistonRetractKey;
import com.sk89q.worldguard.bukkit.listener.debounce.EventDebounce;
import com.sk89q.worldguard.bukkit.listener.debounce.legacy.AbstractEventDebounce.Entry;
import com.sk89q.worldguard.bukkit.listener.debounce.legacy.BlockEntityEventDebounce;
import com.sk89q.worldguard.bukkit.listener.debounce.legacy.EntityEntityEventDebounce;
import com.sk89q.worldguard.bukkit.listener.debounce.legacy.InventoryMoveItemEventDebounce;
import com.sk89q.worldguard.bukkit.util.Blocks;
import com.sk89q.worldguard.bukkit.util.Entities;
import com.sk89q.worldguard.bukkit.util.Events;
import com.sk89q.worldguard.bukkit.util.Materials;
import com.sk89q.worldguard.config.WorldConfiguration;
import com.sk89q.worldguard.protection.flags.Flags;
import org.bukkit.Bukkit;
import org.bukkit.Effect;
import org.bukkit.GameMode;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.block.BlockState;
import org.bukkit.block.Chest;
import org.bukkit.block.Container;
import org.bukkit.block.DoubleChest;
import org.bukkit.block.Dropper;
import org.bukkit.block.Hopper;
import org.bukkit.block.PistonMoveReaction;
import org.bukkit.block.data.type.Dispenser;
import org.bukkit.entity.AreaEffectCloud;
import org.bukkit.entity.Entity;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.FallingBlock;
import org.bukkit.entity.Item;
import org.bukkit.entity.LingeringPotion;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Player;
import org.bukkit.entity.ThrownPotion;
import org.bukkit.event.Cancellable;
import org.bukkit.event.Event;
import org.bukkit.event.Event.Result;
import org.bukkit.event.EventHandler;
import org.bukkit.event.block.Action;
import org.bukkit.event.block.BlockBreakEvent;
import org.bukkit.event.block.BlockBurnEvent;
import org.bukkit.event.block.BlockDamageEvent;
import org.bukkit.event.block.BlockDispenseEvent;
import org.bukkit.event.block.BlockExpEvent;
import org.bukkit.event.block.BlockExplodeEvent;
import org.bukkit.event.block.BlockFromToEvent;
import org.bukkit.event.block.BlockIgniteEvent;
import org.bukkit.event.block.BlockMultiPlaceEvent;
import org.bukkit.event.block.BlockPistonExtendEvent;
import org.bukkit.event.block.BlockPistonRetractEvent;
import org.bukkit.event.block.BlockPlaceEvent;
import org.bukkit.event.block.EntityBlockFormEvent;
import org.bukkit.event.block.SignChangeEvent;
import org.bukkit.event.entity.AreaEffectCloudApplyEvent;
import org.bukkit.event.entity.CreatureSpawnEvent;
import org.bukkit.event.entity.EntityChangeBlockEvent;
import org.bukkit.event.entity.EntityCombustByBlockEvent;
import org.bukkit.event.entity.EntityCombustByEntityEvent;
import org.bukkit.event.entity.EntityCombustEvent;
import org.bukkit.event.entity.EntityDamageByBlockEvent;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.entity.EntityDamageEvent;
import org.bukkit.event.entity.EntityDeathEvent;
import org.bukkit.event.entity.EntityExplodeEvent;
import org.bukkit.event.entity.EntityInteractEvent;
import org.bukkit.event.entity.EntityTameEvent;
import org.bukkit.event.entity.EntityUnleashEvent;
import org.bukkit.event.entity.ExpBottleEvent;
import org.bukkit.event.entity.LingeringPotionSplashEvent;
import org.bukkit.event.entity.PotionSplashEvent;
import org.bukkit.event.hanging.HangingBreakByEntityEvent;
import org.bukkit.event.hanging.HangingBreakEvent;
import org.bukkit.event.hanging.HangingPlaceEvent;
import org.bukkit.event.inventory.InventoryMoveItemEvent;
import org.bukkit.event.inventory.InventoryOpenEvent;
import org.bukkit.event.player.PlayerBedEnterEvent;
import org.bukkit.event.player.PlayerBucketEmptyEvent;
import org.bukkit.event.player.PlayerBucketFillEvent;
import org.bukkit.event.player.PlayerDropItemEvent;
import org.bukkit.event.player.PlayerFishEvent;
import org.bukkit.event.player.PlayerInteractAtEntityEvent;
import org.bukkit.event.player.PlayerInteractEntityEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.event.player.PlayerItemConsumeEvent;
import org.bukkit.event.player.PlayerPickupItemEvent;
import org.bukkit.event.player.PlayerShearEntityEvent;
import org.bukkit.event.player.PlayerUnleashEntityEvent;
import org.bukkit.event.vehicle.VehicleDamageEvent;
import org.bukkit.event.vehicle.VehicleDestroyEvent;
import org.bukkit.event.world.StructureGrowEvent;
import org.bukkit.inventory.EquipmentSlot;
import org.bukkit.inventory.InventoryHolder;
import org.bukkit.inventory.ItemStack;
import org.bukkit.projectiles.ProjectileSource;
import org.bukkit.util.Vector;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nullable;
public class EventAbstractionListener extends AbstractListener {
private final BlockEntityEventDebounce interactDebounce = new BlockEntityEventDebounce(10000);
private final EntityEntityEventDebounce pickupDebounce = new EntityEntityEventDebounce(10000);
private final BlockEntityEventDebounce entityBreakBlockDebounce = new BlockEntityEventDebounce(10000);
private final InventoryMoveItemEventDebounce moveItemDebounce = new InventoryMoveItemEventDebounce(30000);
private final EventDebounce<BlockPistonRetractKey> pistonRetractDebounce = EventDebounce.create(5000);
private final EventDebounce<BlockPistonExtendKey> pistonExtendDebounce = EventDebounce.create(5000);
/**
* Construct the listener.
*
* @param plugin an instance of WorldGuardPlugin
*/
public EventAbstractionListener(WorldGuardPlugin plugin) {
super(plugin);
}
//-------------------------------------------------------------------------
// Block break / place
//-------------------------------------------------------------------------
@EventHandler(ignoreCancelled = true)
public void onBlockBreak(BlockBreakEvent event) {
Events.fireToCancel(event, new BreakBlockEvent(event, create(event.getPlayer()), event.getBlock()));
if (event.isCancelled()) {
playDenyEffect(event.getPlayer(), event.getBlock().getLocation().add(0.5, 1, 0.5));
}
}
@EventHandler(ignoreCancelled = true)
public void onBlockMultiPlace(BlockMultiPlaceEvent event) {
List<Block> blocks = new ArrayList<>();
for (BlockState bs : event.getReplacedBlockStates()) {
blocks.add(bs.getBlock());
}
Events.fireToCancel(event, new PlaceBlockEvent(event, create(event.getPlayer()),
event.getBlock().getWorld(), blocks, event.getBlock().getType()));
}
@EventHandler(ignoreCancelled = true)
public void onBlockPlace(BlockPlaceEvent event) {
if (event instanceof BlockMultiPlaceEvent) return;
BlockState previousState = event.getBlockReplacedState();
// Some blocks, like tall grass and fire, get replaced
if (previousState.getType() != Material.AIR) {
Events.fireToCancel(event, new BreakBlockEvent(event, create(event.getPlayer()), previousState.getLocation(), previousState.getType()));
}
if (!event.isCancelled()) {
ItemStack itemStack = new ItemStack(event.getBlockPlaced().getType(), 1);
Events.fireToCancel(event, new UseItemEvent(event, create(event.getPlayer()), event.getPlayer().getWorld(), itemStack));
}
if (!event.isCancelled()) {
Events.fireToCancel(event, new PlaceBlockEvent(event, create(event.getPlayer()), event.getBlock()));
}
if (event.isCancelled()) {
playDenyEffect(event.getPlayer(), event.getBlockPlaced().getLocation().add(0.5, 0.5, 0.5));
}
}
@EventHandler(ignoreCancelled = true)
public void onBlockBurn(BlockBurnEvent event) {
Block target = event.getBlock();
Block[] adjacent = {
target.getRelative(BlockFace.NORTH),
target.getRelative(BlockFace.SOUTH),
target.getRelative(BlockFace.WEST),
target.getRelative(BlockFace.EAST),
target.getRelative(BlockFace.UP),
target.getRelative(BlockFace.DOWN)};
int found = 0;
boolean allowed = false;
for (Block source : adjacent) {
if (source.getType() == Material.FIRE) {
found++;
if (Events.fireAndTestCancel(new BreakBlockEvent(event, create(source), target))) {
source.setType(Material.AIR);
} else {
allowed = true;
}
}
}
if (found > 0 && !allowed) {
event.setCancelled(true);
}
}
@EventHandler(ignoreCancelled = true)
public void onStructureGrowEvent(StructureGrowEvent event) {
int originalCount = event.getBlocks().size();
List<Block> blockList = Lists.transform(event.getBlocks(), new BlockStateAsBlockFunction());
Player player = event.getPlayer();
if (player != null) {
Events.fireBulkEventToCancel(event, new PlaceBlockEvent(event, create(player), event.getLocation().getWorld(), blockList, Material.AIR));
} else {
Events.fireBulkEventToCancel(event, new PlaceBlockEvent(event, create(event.getLocation().getBlock()), event.getLocation().getWorld(), blockList, Material.AIR));
}
if (!event.isCancelled() && event.getBlocks().size() != originalCount) {
event.getLocation().getBlock().setType(Material.AIR);
}
}
// TODO: Handle EntityCreatePortalEvent?
@EventHandler(ignoreCancelled = true)
public void onEntityChangeBlock(EntityChangeBlockEvent event) {
Block block = event.getBlock();
Entity entity = event.getEntity();
Material to = event.getTo();
// Forget about Redstone ore, especially since we handle it in INTERACT
if (block.getType() == Material.REDSTONE_ORE && to == Material.REDSTONE_ORE) {
return;
}
// Fire two events: one as BREAK and one as PLACE
if (event.getTo() != Material.AIR && event.getBlock().getType() != Material.AIR) {
Events.fireToCancel(event, new BreakBlockEvent(event, create(entity), block));
Events.fireToCancel(event, new PlaceBlockEvent(event, create(entity), block.getLocation(), to));
} else {
if (event.getTo() == Material.AIR) {
// Track the source so later we can create a proper chain of causes
if (entity instanceof FallingBlock) {
Cause.trackParentCause(entity, block);
// Switch around the event
Events.fireToCancel(event, new SpawnEntityEvent(event, create(block), entity));
} else {
entityBreakBlockDebounce.debounce(
event.getBlock(), event.getEntity(), event, new BreakBlockEvent(event, create(entity), event.getBlock()));
}
} else {
boolean wasCancelled = event.isCancelled();
Cause cause = create(entity);
Events.fireToCancel(event, new PlaceBlockEvent(event, cause, event.getBlock().getLocation(), to));
if (event.isCancelled() && !wasCancelled && entity instanceof FallingBlock) {
FallingBlock fallingBlock = (FallingBlock) entity;
ItemStack itemStack = new ItemStack(fallingBlock.getBlockData().getMaterial(), 1);
Item item = block.getWorld().dropItem(fallingBlock.getLocation(), itemStack);
item.setVelocity(new Vector());
if (Events.fireAndTestCancel(new SpawnEntityEvent(event, create(block, entity), item))) {
item.remove();
}
}
}
}
}
@EventHandler(ignoreCancelled = true)
public void onEntityExplode(EntityExplodeEvent event) {
Entity entity = event.getEntity();
if (event.getYield() == 0 && event.blockList().isEmpty()) {
// avoids ender dragon spam
return;
}
Events.fireBulkEventToCancel(event, new BreakBlockEvent(event, create(entity), event.getLocation().getWorld(), event.blockList(), Material.AIR));
}
@EventHandler(ignoreCancelled = true)
public void onBlockPistonRetract(BlockPistonRetractEvent event) {
if (event.isSticky()) {
EventDebounce.Entry entry = pistonRetractDebounce.getIfNotPresent(new BlockPistonRetractKey(event), event);
if (entry != null) {
Block piston = event.getBlock();
Cause cause = create(piston);
BlockFace direction = event.getDirection();
ArrayList<Block> blocks = new ArrayList<>(event.getBlocks());
int originalSize = blocks.size();
Events.fireBulkEventToCancel(event, new BreakBlockEvent(event, cause, event.getBlock().getWorld(), blocks, Material.AIR));
if (originalSize != blocks.size()) {
event.setCancelled(true);
}
for (Block b : blocks) {
Location loc = b.getRelative(direction).getLocation();
Events.fireToCancel(event, new PlaceBlockEvent(event, cause, loc, b.getType()));
}
entry.setCancelled(event.isCancelled());
if (event.isCancelled()) {
playDenyEffect(piston.getLocation().add(0.5, 1, 0.5));
}
}
}
}
@EventHandler(ignoreCancelled = true)
public void onBlockPistonExtend(BlockPistonExtendEvent event) {
EventDebounce.Entry entry = pistonExtendDebounce.getIfNotPresent(new BlockPistonExtendKey(event), event);
if (entry != null) {
List<Block> blocks = new ArrayList<>(event.getBlocks());
int originalLength = blocks.size();
BlockFace dir = event.getDirection();
for (int i = 0; i < blocks.size(); i++) {
Block existing = blocks.get(i);
if (existing.getPistonMoveReaction() == PistonMoveReaction.MOVE
|| existing.getPistonMoveReaction() == PistonMoveReaction.PUSH_ONLY) {
blocks.set(i, existing.getRelative(dir));
}
}
Events.fireBulkEventToCancel(event, new PlaceBlockEvent(event, create(event.getBlock()), event.getBlock().getWorld(), blocks, Material.STONE));
if (blocks.size() != originalLength) {
event.setCancelled(true);
}
entry.setCancelled(event.isCancelled());
if (event.isCancelled()) {
playDenyEffect(event.getBlock().getLocation().add(0.5, 1, 0.5));
}
}
}
//-------------------------------------------------------------------------
// Block external interaction
//-------------------------------------------------------------------------
@EventHandler(ignoreCancelled = true)
public void onBlockDamage(BlockDamageEvent event) {
Block target = event.getBlock();
// Previously, and perhaps still, the only way to catch cake eating
// events was through here
if (target.getType() == Material.CAKE) {
Events.fireToCancel(event, new UseBlockEvent(event, create(event.getPlayer()), target));
}
}
@EventHandler
public void onPlayerInteract(PlayerInteractEvent event) {
Player player = event.getPlayer();
@Nullable ItemStack item = event.getItem();
Block clicked = event.getClickedBlock();
Block placed;
boolean silent = false;
boolean modifiesWorld;
Cause cause = create(player);
switch (event.getAction()) {
case PHYSICAL:
if (event.useInteractedBlock() != Result.DENY) {
DelegateEvent firedEvent = new UseBlockEvent(event, cause, clicked).setAllowed(hasInteractBypass(clicked));
if (clicked.getType() == Material.REDSTONE_ORE) {
silent = true;
}
if (clicked.getType() == Material.FARMLAND || clicked.getType() == Material.TURTLE_EGG) {
silent = true;
firedEvent.getRelevantFlags().add(Flags.TRAMPLE_BLOCKS);
}
firedEvent.setSilent(silent);
interactDebounce.debounce(clicked, event.getPlayer(), event, firedEvent);
}
break;
case RIGHT_CLICK_BLOCK:
if (event.useInteractedBlock() != Result.DENY) {
placed = clicked.getRelative(event.getBlockFace());
// Re-used for dispensers
handleBlockRightClick(event, create(event.getPlayer()), item, clicked, placed);
}
case LEFT_CLICK_BLOCK:
if (event.useInteractedBlock() != Result.DENY) {
placed = clicked.getRelative(event.getBlockFace());
// Only fire events for blocks that are modified when right clicked
final boolean hasItemInteraction = item != null && isItemAppliedToBlock(item, clicked);
modifiesWorld = isBlockModifiedOnClick(clicked, event.getAction() == Action.RIGHT_CLICK_BLOCK)
|| hasItemInteraction;
if (Events.fireAndTestCancel(new UseBlockEvent(event, cause, clicked).setAllowed(!modifiesWorld))) {
event.setUseInteractedBlock(Result.DENY);
}
// Handle connected blocks (i.e. beds, chests)
for (Block connected : Blocks.getConnected(clicked)) {
if (Events.fireAndTestCancel(new UseBlockEvent(event, create(event.getPlayer()), connected).setAllowed(!modifiesWorld))) {
event.setUseInteractedBlock(Result.DENY);
break;
}
}
if (hasItemInteraction) {
if (Events.fireAndTestCancel(new PlaceBlockEvent(event, cause, clicked.getLocation(), clicked.getType()))) {
event.setUseItemInHand(Result.DENY);
}
}
// Special handling of putting out fires
if (event.getAction() == Action.LEFT_CLICK_BLOCK && placed.getType() == Material.FIRE) {
if (Events.fireAndTestCancel(new BreakBlockEvent(event, create(event.getPlayer()), placed))) {
event.setUseInteractedBlock(Result.DENY);
break;
}
}
if (event.isCancelled()) {
playDenyEffect(event.getPlayer(), clicked.getLocation().add(0.5, 1, 0.5));
}
}
case LEFT_CLICK_AIR:
case RIGHT_CLICK_AIR:
if (event.useItemInHand() != Result.DENY) {
if (item != null && !item.getType().isBlock() && Events.fireAndTestCancel(new UseItemEvent(event, cause, player.getWorld(), item))) {
event.setUseItemInHand(Result.DENY);
}
}
// Check for items that the administrator has configured to
// emit a "use block here" event where the player is
// standing, which is a hack to protect items that don't
// throw events
if (item != null && ((BukkitWorldConfiguration) getWorldConfig(BukkitAdapter.adapt(player.getWorld()))).blockUseAtFeet.test(item)) {
if (Events.fireAndTestCancel(new UseBlockEvent(event, cause, player.getLocation().getBlock()))) {
event.setUseInteractedBlock(Result.DENY);
}
}
break;
}
}
@EventHandler(ignoreCancelled = true)
public void onEntityBlockForm(EntityBlockFormEvent event) {
entityBreakBlockDebounce.debounce(event.getBlock(), event.getEntity(), event,
new PlaceBlockEvent(event, create(event.getEntity()),
event.getBlock().getLocation(), event.getNewState().getType()));
}
@EventHandler(ignoreCancelled = true)
public void onEntityInteract(EntityInteractEvent event) {
interactDebounce.debounce(event.getBlock(), event.getEntity(), event,
new UseBlockEvent(event, create(event.getEntity()),
event.getBlock()).setAllowed(hasInteractBypass(event.getBlock())));
}
@EventHandler(ignoreCancelled = true)
public void onBlockIgnite(BlockIgniteEvent event) {
Block block = event.getBlock();
Cause cause;
// Find the cause
if (event.getPlayer() != null) {
cause = create(event.getPlayer());
} else if (event.getIgnitingEntity() != null) {
cause = create(event.getIgnitingEntity());
} else if (event.getIgnitingBlock() != null) {
cause = create(event.getIgnitingBlock());
} else {
cause = Cause.unknown();
}
Events.fireToCancel(event, new PlaceBlockEvent(event, cause, block.getLocation(), Material.FIRE));
}
@EventHandler(ignoreCancelled = true)
public void onSignChange(SignChangeEvent event) {
Events.fireToCancel(event, new UseBlockEvent(event, create(event.getPlayer()), event.getBlock()));
if (event.isCancelled()) {
playDenyEffect(event.getPlayer(), event.getBlock().getLocation().add(0.5, 0.5, 0.5));
}
}
@EventHandler(ignoreCancelled = true)
public void onBedEnter(PlayerBedEnterEvent event) {
Events.fireToCancel(event, new UseBlockEvent(event, create(event.getPlayer()), event.getBed()));
}
@EventHandler(ignoreCancelled = true)
public void onPlayerBucketEmpty(PlayerBucketEmptyEvent event) {
Player player = event.getPlayer();
Block blockAffected = event.getBlockClicked().getRelative(event.getBlockFace());
boolean allowed = false;
// Milk buckets can't be emptied as of writing
if (event.getBucket() == Material.MILK_BUCKET) {
allowed = true;
}
ItemStack item = new ItemStack(event.getBucket(), 1);
Material blockMaterial = Materials.getBucketBlockMaterial(event.getBucket());
Events.fireToCancel(event, new PlaceBlockEvent(event, create(player), blockAffected.getLocation(), blockMaterial).setAllowed(allowed));
Events.fireToCancel(event, new UseItemEvent(event, create(player), player.getWorld(), item).setAllowed(allowed));
if (event.isCancelled()) {
playDenyEffect(event.getPlayer(), blockAffected.getLocation().add(0.5, 0.5, 0.5));
}
}
@EventHandler(ignoreCancelled = true)
public void onPlayerBucketFill(PlayerBucketFillEvent event) {
Player player = event.getPlayer();
Block blockAffected = event.getBlockClicked().getRelative(event.getBlockFace());
boolean allowed = false;
// Milk buckets can't be emptied as of writing
if (event.getItemStack().getType() == Material.MILK_BUCKET) {
allowed = true;
}
ItemStack item = new ItemStack(event.getBucket(), 1);
Events.fireToCancel(event, new BreakBlockEvent(event, create(player), blockAffected).setAllowed(allowed));
Events.fireToCancel(event, new UseItemEvent(event, create(player), player.getWorld(), item).setAllowed(allowed));
if (event.isCancelled()) {
playDenyEffect(event.getPlayer(), blockAffected.getLocation().add(0.5, 0.5, 0.5));
}
}
// TODO: Handle EntityPortalEnterEvent
//-------------------------------------------------------------------------
// Block self-interaction
//-------------------------------------------------------------------------
@EventHandler(ignoreCancelled = true)
public void onBlockFromTo(BlockFromToEvent event) {
WorldConfiguration config = getWorldConfig(BukkitAdapter.adapt(event.getBlock().getWorld()));
// This only applies to regions but nothing else cares about high
// frequency events at the moment
if (!config.useRegions || (!config.highFreqFlags && !config.checkLiquidFlow)) {
return;
}
Block from = event.getBlock();
Block to = event.getToBlock();
Material fromType = from.getType();
Material toType = to.getType();
// Liquids pass this event when flowing to solid blocks
if (toType.isSolid() && Materials.isLiquid(fromType)) {
return;
}
// This significantly reduces the number of events without having
// too much effect. Unfortunately it appears that even if this
// check didn't exist, you can raise the level of some liquid
// flow and the from/to data may not be correct.
if ((Materials.isWater(fromType) && Materials.isWater(toType)) || (Materials.isLava(fromType) && Materials.isLava(toType))) {
return;
}
Cause cause = create(from);
// Disable since it's probably not needed
/*if (from.getType() != Material.AIR) {
Events.fireToCancel(event, new BreakBlockEvent(event, cause, to));
}*/
Events.fireToCancel(event, new PlaceBlockEvent(event, cause, to.getLocation(), from.getType()));
}
//-------------------------------------------------------------------------
// Entity break / place
//-------------------------------------------------------------------------
@EventHandler(ignoreCancelled = true)
public void onCreatureSpawn(CreatureSpawnEvent event) {
switch (event.getSpawnReason()) {
case DISPENSE_EGG:
case EGG:
case SPAWNER_EGG:
if (getWorldConfig(BukkitAdapter.adapt(event.getEntity().getWorld())).strictEntitySpawn) {
Events.fireToCancel(event, new SpawnEntityEvent(event, Cause.unknown(), event.getEntity()));
}
break;
case NATURAL:
case JOCKEY:
case CHUNK_GEN:
case SPAWNER:
case LIGHTNING:
case BUILD_SNOWMAN:
case BUILD_IRONGOLEM:
case BUILD_WITHER:
case VILLAGE_DEFENSE:
case VILLAGE_INVASION:
case BREEDING:
case SLIME_SPLIT:
case REINFORCEMENTS:
case NETHER_PORTAL:
case INFECTION:
case CURED:
case OCELOT_BABY:
case SILVERFISH_BLOCK:
case MOUNT:
case CUSTOM:
case DEFAULT:
}
}
@EventHandler(ignoreCancelled = true)
public void onHangingPlace(HangingPlaceEvent event) {
Events.fireToCancel(event, new SpawnEntityEvent(event, create(event.getPlayer()), event.getEntity()));
if (event.isCancelled()) {
Block effectBlock = event.getBlock().getRelative(event.getBlockFace());
playDenyEffect(event.getPlayer(), effectBlock.getLocation().add(0.5, 0.5, 0.5));
}
}
@EventHandler(ignoreCancelled = true)
public void onHangingBreak(HangingBreakEvent event) {
if (event instanceof HangingBreakByEntityEvent) {
Entity remover = ((HangingBreakByEntityEvent) event).getRemover();
Events.fireToCancel(event, new DestroyEntityEvent(event, create(remover), event.getEntity()));
if (event.isCancelled() && remover instanceof Player) {
playDenyEffect((Player) remover, event.getEntity().getLocation());
}
}
}
@EventHandler(ignoreCancelled = true)
public void onVehicleDestroy(VehicleDestroyEvent event) {
Events.fireToCancel(event, new DestroyEntityEvent(event, create(event.getAttacker()), event.getVehicle()));
}
@EventHandler(ignoreCancelled = true)
public void onBlockExp(BlockExpEvent event) {
if (event.getExpToDrop() > 0) { // Event is raised even where no XP is being dropped
if (Events.fireAndTestCancel(new SpawnEntityEvent(event, create(event.getBlock()), event.getBlock().getLocation(), EntityType.EXPERIENCE_ORB))) {
event.setExpToDrop(0);
}
}
}
@EventHandler(ignoreCancelled = true)
public void onPlayerFish(PlayerFishEvent event) {
if (event.getState() == PlayerFishEvent.State.FISHING) {
if (Events.fireAndTestCancel(new UseItemEvent(event, create(event.getPlayer(), event.getHook()),
event.getPlayer().getWorld(), event.getPlayer().getInventory().getItemInMainHand()))) {
event.setCancelled(true);
}
} else if (event.getState() == PlayerFishEvent.State.CAUGHT_FISH) {
if (Events.fireAndTestCancel(new SpawnEntityEvent(event, create(event.getPlayer(), event.getHook()), event.getHook().getLocation(), EntityType.EXPERIENCE_ORB))) {
event.setExpToDrop(0);
}
} else if (event.getState() == PlayerFishEvent.State.CAUGHT_ENTITY) {
Entity caught = event.getCaught();
if (caught == null) return;
if (caught instanceof Item) {
Events.fireToCancel(event, new DestroyEntityEvent(event, create(event.getPlayer(), event.getHook()), caught));
} else if (Entities.isConsideredBuildingIfUsed(caught)) {
Events.fireToCancel(event, new UseEntityEvent(event, create(event.getPlayer(), event.getHook()), caught));
} else if (Entities.isNonHostile(caught) || caught instanceof Player) {
Events.fireToCancel(event, new DamageEntityEvent(event, create(event.getPlayer(), event.getHook()), caught));
}
}
}
@EventHandler(ignoreCancelled = true)
public void onExpBottle(ExpBottleEvent event) {
if (Events.fireAndTestCancel(new SpawnEntityEvent(event, create(event.getEntity()), event.getEntity().getLocation(), EntityType.EXPERIENCE_ORB))) {
event.setExperience(0);
// Give the player back his or her XP bottle
ProjectileSource shooter = event.getEntity().getShooter();
if (shooter instanceof Player) {
Player player = (Player) shooter;
if (player.getGameMode() != GameMode.CREATIVE) {
player.getInventory().addItem(new ItemStack(Material.EXPERIENCE_BOTTLE, 1));
}
}
}
}
@EventHandler(ignoreCancelled = true)
public void onEntityDeath(EntityDeathEvent event) {
if (event.getDroppedExp() > 0) {
if (Events.fireAndTestCancel(new SpawnEntityEvent(event, create(event.getEntity()), event.getEntity().getLocation(), EntityType.EXPERIENCE_ORB))) {
event.setDroppedExp(0);
}
}
}
//-------------------------------------------------------------------------
// Entity external interaction
//-------------------------------------------------------------------------
@EventHandler(ignoreCancelled = true)
public void onPlayerInteractEntity(PlayerInteractEntityEvent event) {
Player player = event.getPlayer();
World world = player.getWorld();
ItemStack item = event.getHand() == EquipmentSlot.OFF_HAND
? player.getInventory().getItemInOffHand() : player.getInventory().getItemInMainHand();
Entity entity = event.getRightClicked();
Events.fireToCancel(event, new UseItemEvent(event, create(player), world, item));
Events.fireToCancel(event, new UseEntityEvent(event, create(player), entity));
}
@EventHandler(ignoreCancelled = true)
public void onEntityDamage(EntityDamageEvent event) {
if (event instanceof EntityDamageByBlockEvent) {
@Nullable Block attacker = ((EntityDamageByBlockEvent) event).getDamager();
// The attacker should NOT be null, but sometimes it is
// See WORLDGUARD-3350
if (attacker != null) {
Events.fireToCancel(event, new DamageEntityEvent(event, create(attacker), event.getEntity()));
}
} else if (event instanceof EntityDamageByEntityEvent) {
EntityDamageByEntityEvent entityEvent = (EntityDamageByEntityEvent) event;
Entity damager = entityEvent.getDamager();
Events.fireToCancel(event, new DamageEntityEvent(event, create(damager), event.getEntity()));
// Item use event with the item in hand
// Older blacklist handler code used this, although it suffers from
// race problems
if (damager instanceof Player) {
// this event doesn't tell us which hand the weapon was in
ItemStack item = ((Player) damager).getInventory().getItemInMainHand();
if (item.getType() != Material.AIR) {
Events.fireToCancel(event, new UseItemEvent(event, create(damager), event.getEntity().getWorld(), item));
}
}
}
}
@EventHandler(ignoreCancelled = true)
public void onEntityCombust(EntityCombustEvent event) {
if (event instanceof EntityCombustByBlockEvent) {
// at the time of writing, spigot is throwing null for the event's combuster. this causes lots of issues downstream.
// whenever (i mean if ever) it is fixed, use getCombuster again instead of the current block
Events.fireToCancel(event, new DamageEntityEvent(event, create(event.getEntity().getLocation().getBlock()), event.getEntity()));
} else if (event instanceof EntityCombustByEntityEvent) {
Events.fireToCancel(event, new DamageEntityEvent(event, create(((EntityCombustByEntityEvent) event).getCombuster()), event.getEntity()));
}
}
@EventHandler(ignoreCancelled = true)
public void onEntityUnleash(EntityUnleashEvent event) {
if (event instanceof PlayerUnleashEntityEvent) {
PlayerUnleashEntityEvent playerEvent = (PlayerUnleashEntityEvent) event;
Events.fireToCancel(playerEvent, new UseEntityEvent(playerEvent, create(playerEvent.getPlayer()), event.getEntity()));
} // TODO: Raise anyway?
}
@EventHandler(ignoreCancelled = true)
public void onEntityTame(EntityTameEvent event) {
Events.fireToCancel(event, new UseEntityEvent(event, create(event.getOwner()), event.getEntity()));
}
@EventHandler(ignoreCancelled = true)
public void onPlayerShearEntity(PlayerShearEntityEvent event) {
Events.fireToCancel(event, new UseEntityEvent(event, create(event.getPlayer()), event.getEntity()));
}
@EventHandler(ignoreCancelled = true)
public void onPlayerPickupItem(PlayerPickupItemEvent event) {
Item item = event.getItem();
pickupDebounce.debounce(event.getPlayer(), item, event, new DestroyEntityEvent(event, create(event.getPlayer()), event.getItem()));
}
@EventHandler(ignoreCancelled = true)
public void onPlayerDropItem(PlayerDropItemEvent event) {
Events.fireToCancel(event, new SpawnEntityEvent(event, create(event.getPlayer()), event.getItemDrop()));
}
@EventHandler(ignoreCancelled = true)
public void onVehicleDamage(VehicleDamageEvent event) {
Entity attacker = event.getAttacker();
Events.fireToCancel(event, new DamageEntityEvent(event, create(attacker), event.getVehicle()));
}
//-------------------------------------------------------------------------
// Composite events
//-------------------------------------------------------------------------
@EventHandler(ignoreCancelled = true)
public void onPlayerItemConsume(PlayerItemConsumeEvent event) {
Events.fireToCancel(event, new UseItemEvent(event, create(event.getPlayer()), event.getPlayer().getWorld(), event.getItem()));
}
@EventHandler(ignoreCancelled = true)
public void onInventoryOpen(InventoryOpenEvent event) {
InventoryHolder holder = event.getInventory().getHolder();
if (holder instanceof BlockState) {
Events.fireToCancel(event, new UseBlockEvent(event, create(event.getPlayer()), ((BlockState) holder).getBlock()));
} else if (holder instanceof Entity) {
if (!(holder instanceof Player)) {
Events.fireToCancel(event, new UseEntityEvent(event, create(event.getPlayer()), (Entity) holder));
}
}
}
@EventHandler(ignoreCancelled = true)
public void onInventoryMoveItem(InventoryMoveItemEvent event) {
final InventoryHolder causeHolder = event.getInitiator().getHolder();
InventoryHolder sourceHolder = event.getSource().getHolder();
InventoryHolder targetHolder = event.getDestination().getHolder();
if ((causeHolder instanceof Hopper || causeHolder instanceof Dropper)
&& ((BukkitWorldConfiguration) WorldGuard.getInstance().getPlatform().getGlobalStateManager().get(
BukkitAdapter.adapt(((Container) causeHolder).getWorld()))).ignoreHopperMoveEvents) {
return;
}
Entry entry;
if ((entry = moveItemDebounce.tryDebounce(event)) != null) {
Cause cause;
if (causeHolder instanceof Entity) {
cause = create(causeHolder);
} else if (causeHolder instanceof BlockState) {
cause = create(((BlockState) causeHolder).getBlock());
} else {
cause = Cause.unknown();
}
if (causeHolder != null && !causeHolder.equals(sourceHolder)) {
handleInventoryHolderUse(event, cause, sourceHolder);
}
handleInventoryHolderUse(event, cause, targetHolder);
if (event.isCancelled() && causeHolder instanceof Hopper) {
Bukkit.getScheduler().scheduleSyncDelayedTask(getPlugin(),
() -> ((Hopper) causeHolder).getBlock().breakNaturally());
} else {
entry.setCancelled(event.isCancelled());
}
}
}
@EventHandler(ignoreCancelled = true)
public void onPotionSplash(PotionSplashEvent event) {
Entity entity = event.getEntity();
ThrownPotion potion = event.getPotion();
World world = entity.getWorld();
Cause cause = create(potion);
// Fire item interaction event
Events.fireToCancel(event, new UseItemEvent(event, cause, world, potion.getItem()));
// Fire entity interaction event
if (!event.isCancelled()) {
int blocked = 0;
int affectedSize = event.getAffectedEntities().size();
boolean hasDamageEffect = Materials.hasDamageEffect(potion.getEffects());
for (LivingEntity affected : event.getAffectedEntities()) {
DelegateEvent delegate = hasDamageEffect
? new DamageEntityEvent(event, cause, affected) :
new UseEntityEvent(event, cause, affected);
// Consider the potion splash flag
delegate.getRelevantFlags().add(Flags.POTION_SPLASH);
if (Events.fireAndTestCancel(delegate)) {
event.setIntensity(affected, 0);
blocked++;
}
}
if (blocked == affectedSize) { // server does weird things with this if the event is modified, so use cached number
event.setCancelled(true);
}
}
}
@EventHandler(ignoreCancelled = true)
public void onBlockDispense(BlockDispenseEvent event) {
Cause cause = create(event.getBlock());
Block dispenserBlock = event.getBlock();
ItemStack item = event.getItem();
Events.fireToCancel(event, new UseItemEvent(event, cause, dispenserBlock.getWorld(), item));
// Simulate right click event as players have it
if (dispenserBlock.getBlockData() instanceof Dispenser) {
Dispenser dispenser = (Dispenser) dispenserBlock.getBlockData();
Block placed = dispenserBlock.getRelative(dispenser.getFacing());
Block clicked = placed.getRelative(dispenser.getFacing());
handleBlockRightClick(event, cause, item, clicked, placed);
}
}
@EventHandler(ignoreCancelled = true)
public void onLingeringSplash(LingeringPotionSplashEvent event) {
AreaEffectCloud aec = event.getAreaEffectCloud();
LingeringPotion potion = event.getEntity();
World world = potion.getWorld();
Cause cause = create(event.getEntity());
// Fire item interaction event
Events.fireToCancel(event, new UseItemEvent(event, cause, world, potion.getItem()));
// Fire entity spawn event
if (!event.isCancelled()) {
// radius unfortunately doesn't go through with this, so only a single location is tested
Events.fireToCancel(event, new SpawnEntityEvent(event, cause, aec.getLocation().add(0.5, 0, 0.5), EntityType.AREA_EFFECT_CLOUD));
}
}
@EventHandler(ignoreCancelled = true)
public void onLingeringApply(AreaEffectCloudApplyEvent event) {
if (!Materials.hasDamageEffect(event.getEntity().getCustomEffects())) {
return;
}
Cause cause = create(event.getEntity());
event.getAffectedEntities()
.removeIf(victim -> Events.fireAndTestCancel(new DamageEntityEvent(event, cause, victim)));
}
@EventHandler(ignoreCancelled = true)
public void onPlayerInteractAtEntity(PlayerInteractAtEntityEvent event){
onPlayerInteractEntity(event);
}
@EventHandler(ignoreCancelled = true)
public void onBlockExplode(BlockExplodeEvent event) {
final BreakBlockEvent eventToFire = new BreakBlockEvent(event, create(event.getBlock()),
event.getBlock().getLocation().getWorld(), event.blockList(), Material.AIR);
eventToFire.getRelevantFlags().add(Flags.OTHER_EXPLOSION);
Events.fireBulkEventToCancel(event, eventToFire);
}
/**
* Handle the right click of a block while an item is held.
*
* @param event the original event
* @param cause the list of cause
* @param item the item
* @param placed the placed block
* @param <T> the event type
*/
private static <T extends Event & Cancellable> void handleBlockRightClick(T event, Cause cause, @Nullable ItemStack item, Block clicked, Block placed) {
if (item != null && item.getType() == Material.TNT) {
// Workaround for a bug that allowed TNT to trigger instantly if placed
// next to redstone, without plugins getting the clicked place event
// (not sure if this actually still happens) -- note Jun 2019 - happens with dispensers still, tho not players
Events.fireToCancel(event, new UseBlockEvent(event, cause, clicked.getLocation(), Material.TNT));
// Workaround for http://leaky.bukkit.org/issues/1034