Finalized copper golem logging

This commit is contained in:
Intelli 2025-12-14 17:56:43 -07:00
parent 38166fd381
commit 609990e344

View file

@ -1,133 +1,424 @@
package net.coreprotect.paper.listener; package net.coreprotect.paper.listener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map; import java.util.Map;
import java.util.Objects; import java.util.Objects;
import java.util.UUID; import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentHashMap;
import org.bukkit.GameEvent;
import org.bukkit.Location; import org.bukkit.Location;
import org.bukkit.Material; import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockState; import org.bukkit.block.BlockState;
import org.bukkit.entity.CopperGolem; import org.bukkit.entity.CopperGolem;
import org.bukkit.entity.Entity; import org.bukkit.entity.Entity;
import org.bukkit.event.EventHandler; import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority; import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener; import org.bukkit.event.Listener;
import org.bukkit.event.world.GenericGameEvent;
import org.bukkit.inventory.EntityEquipment; import org.bukkit.inventory.EntityEquipment;
import org.bukkit.inventory.Inventory; import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.InventoryHolder; import org.bukkit.inventory.InventoryHolder;
import org.bukkit.inventory.ItemStack; import org.bukkit.inventory.ItemStack;
import org.bukkit.scheduler.BukkitTask;
import io.papermc.paper.event.entity.ItemTransportingEntityValidateTargetEvent;
import net.coreprotect.CoreProtect; import net.coreprotect.CoreProtect;
import net.coreprotect.bukkit.BukkitAdapter; import net.coreprotect.bukkit.BukkitAdapter;
import net.coreprotect.config.Config; import net.coreprotect.config.Config;
import net.coreprotect.config.ConfigHandler;
import net.coreprotect.listener.player.InventoryChangeListener; import net.coreprotect.listener.player.InventoryChangeListener;
import net.coreprotect.utility.ItemUtils; import net.coreprotect.utility.ItemUtils;
public final class CopperGolemChestListener implements Listener { public final class CopperGolemChestListener implements Listener {
private static final String COPPER_GOLEM_NAME = "COPPER_GOLEM";
private static final String USERNAME = "#copper_golem"; private static final String USERNAME = "#copper_golem";
private static final long INITIAL_DELAY_TICKS = 5L; private static final long OPEN_INTERACTION_TIMEOUT_MILLIS = 20000L;
private static final long POLL_INTERVAL_TICKS = 15L; private static final long CLEANUP_INTERVAL_MILLIS = 60000L;
private static final long MAX_POLL_DURATION_TICKS = 600L; private static final long EMPTY_COPPER_CHEST_SKIP_TTL_MILLIS = 6000L;
private static final long MIN_THROTTLE_MILLIS = 2800L; private static final long CLOSE_FINALIZE_DELAY_TICKS = 1L;
private static final int CLOSE_FINALIZE_MAX_ATTEMPTS = 3;
private static final int CLOSE_FALLBACK_MAX_ATTEMPTS = 2;
private final CoreProtect plugin; private final CoreProtect plugin;
private final Map<TransactionKey, PendingTransaction> pendingTransactions = new ConcurrentHashMap<>(); private final Map<UUID, OpenInteraction> openInteractions = new ConcurrentHashMap<>();
private final Map<TransactionKey, Long> throttleUntil = new ConcurrentHashMap<>(); private final Map<UUID, RecentEmptyCopperChestSkip> recentEmptyCopperChestSkips = new ConcurrentHashMap<>();
private volatile long lastCleanupMillis;
public CopperGolemChestListener(CoreProtect plugin) { public CopperGolemChestListener(CoreProtect plugin) {
this.plugin = plugin; this.plugin = plugin;
} }
@EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true) @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
public void onValidate(ItemTransportingEntityValidateTargetEvent event) { public void onGenericGameEvent(GenericGameEvent event) {
if (!event.isAllowed()) { if (event == null) {
return;
}
GameEvent gameEvent = event.getEvent();
if (gameEvent != GameEvent.CONTAINER_OPEN && gameEvent != GameEvent.CONTAINER_CLOSE) {
return; return;
} }
Entity entity = event.getEntity(); Entity entity = event.getEntity();
if (entity == null || entity.getType() == null || !COPPER_GOLEM_NAME.equals(entity.getType().name())) { if (!(entity instanceof CopperGolem)) {
return;
}
CopperGolem copperGolem = (CopperGolem) entity;
Material heldMaterial = getHeldItemMaterial(copperGolem);
Block block = event.getBlock();
if (block == null) {
return; return;
} }
BlockState blockState = block.getState(); Location eventLocation = event.getLocation();
if (eventLocation == null || eventLocation.getWorld() == null) {
return;
}
if (!Config.getConfig(eventLocation.getWorld()).ITEM_TRANSACTIONS) {
return;
}
BlockState blockState = eventLocation.getBlock().getState();
if (!(blockState instanceof InventoryHolder)) { if (!(blockState instanceof InventoryHolder)) {
return; return;
} }
Location location = blockState.getLocation(); Location containerLocation = blockState.getLocation();
if (location == null || location.getWorld() == null) { if (containerLocation == null || containerLocation.getWorld() == null) {
return; return;
} }
if (!Config.getConfig(location.getWorld()).ITEM_TRANSACTIONS) { Material containerType = blockState.getType();
boolean isCopperChest = BukkitAdapter.ADAPTER.isCopperChest(containerType);
boolean isStandardChest = containerType == Material.CHEST || containerType == Material.TRAPPED_CHEST;
if (!isCopperChest && !isStandardChest) {
return; return;
} }
scheduleTransaction(copperGolem, blockState, heldMaterial); long now = System.currentTimeMillis();
cleanupOpenInteractions(now);
CopperGolem golem = (CopperGolem) entity;
TransactionKey containerKey = TransactionKey.of(containerLocation);
if (gameEvent == GameEvent.CONTAINER_OPEN) {
handleContainerOpen(golem, containerLocation, containerKey, containerType, (InventoryHolder) blockState, now);
}
else {
handleContainerClose(golem, containerLocation, containerKey, containerType, (InventoryHolder) blockState, now);
}
} }
private void scheduleTransaction(CopperGolem copperGolem, BlockState blockState, Material heldMaterial) { private void handleContainerOpen(CopperGolem golem, Location containerLocation, TransactionKey containerKey, Material containerType, InventoryHolder inventoryHolder, long nowMillis) {
Location location = blockState.getLocation();
if (location == null || copperGolem == null) {
return;
}
TransactionKey transactionKey = TransactionKey.of(location);
Location targetLocation = location.clone();
ItemStack[] baselineState = captureInventoryState(targetLocation);
if (baselineState == null) {
return;
}
if (!shouldMonitorInteraction(blockState.getType(), baselineState, heldMaterial)) {
return;
}
PendingTransaction existing = pendingTransactions.get(transactionKey);
if (existing != null) {
existing.refresh(baselineState);
return;
}
if (isThrottled(transactionKey)) {
return;
}
PendingTransaction scheduled = new PendingTransaction(transactionKey, targetLocation, baselineState);
pendingTransactions.put(transactionKey, scheduled);
throttleUntil.put(transactionKey, System.currentTimeMillis() + MIN_THROTTLE_MILLIS);
scheduled.start();
}
private ItemStack[] captureInventoryState(Location location) {
if (location == null || location.getWorld() == null) {
return null;
}
BlockState blockState = location.getBlock().getState();
if (!(blockState instanceof InventoryHolder)) {
return null;
}
InventoryHolder inventoryHolder = (InventoryHolder) blockState;
Inventory inventory = inventoryHolder.getInventory(); Inventory inventory = inventoryHolder.getInventory();
if (inventory == null) { if (inventory == null) {
return;
}
HeldItemSnapshot held = getHeldItemSnapshot(golem);
boolean isCopperChest = BukkitAdapter.ADAPTER.isCopperChest(containerType);
if (isCopperChest) {
if (held.material != null) {
return;
}
}
else {
if (held.material == null) {
return;
}
}
ItemStack[] contents = inventory.getContents();
if (contents == null) {
return;
}
if (isCopperChest) {
if (isInventoryEmpty(contents)) {
recentEmptyCopperChestSkips.put(golem.getUniqueId(), new RecentEmptyCopperChestSkip(containerKey, nowMillis));
return;
}
}
else {
if (!isInventoryEmpty(contents) && !containsOnlyMaterial(contents, held.material)) {
return;
}
if (!hasSpaceForMaterial(contents, held.material)) {
return;
}
}
ItemStack[] baseline = ItemUtils.getContainerState(contents);
if (baseline == null) {
return;
}
Material heldMaterial = isCopperChest ? null : held.material;
int heldAmount = isCopperChest ? 0 : held.amount;
OpenInteraction interaction = new OpenInteraction(containerKey, containerLocation.clone(), containerType, baseline, heldMaterial, heldAmount, nowMillis);
recentEmptyCopperChestSkips.remove(golem.getUniqueId());
openInteractions.put(golem.getUniqueId(), interaction);
}
private void handleContainerClose(CopperGolem golem, Location containerLocation, TransactionKey containerKey, Material containerType, InventoryHolder inventoryHolder, long nowMillis) {
UUID golemId = golem.getUniqueId();
OpenInteraction interaction = openInteractions.get(golemId);
if (interaction == null) {
if (BukkitAdapter.ADAPTER.isCopperChest(containerType)) {
RecentEmptyCopperChestSkip emptySkip = recentEmptyCopperChestSkips.get(golemId);
if (emptySkip != null && emptySkip.containerKey.equals(containerKey) && (nowMillis - emptySkip.skippedAtMillis) <= EMPTY_COPPER_CHEST_SKIP_TTL_MILLIS) {
recentEmptyCopperChestSkips.remove(golemId, emptySkip);
return;
}
scheduleUntrackedCopperChestCloseFinalize(golemId, containerLocation.clone(), containerType, 1);
return;
}
return;
}
if (nowMillis - interaction.openedAtMillis > OPEN_INTERACTION_TIMEOUT_MILLIS) {
openInteractions.remove(golemId, interaction);
return;
}
if (!interaction.containerKey.equals(containerKey)) {
return;
}
openInteractions.remove(golemId, interaction);
scheduleCloseFinalize(golemId, interaction, containerKey, 1);
}
private void scheduleCloseFinalize(UUID golemId, OpenInteraction interaction, TransactionKey containerKey, int attempt) {
plugin.getServer().getScheduler().runTaskLater(plugin, () -> finalizeContainerClose(golemId, interaction, containerKey, attempt), CLOSE_FINALIZE_DELAY_TICKS);
}
private void scheduleUntrackedCopperChestCloseFinalize(UUID golemId, Location containerLocation, Material containerType, int attempt) {
plugin.getServer().getScheduler().runTaskLater(plugin, () -> finalizeUntrackedCopperChestClose(golemId, containerLocation, containerType, attempt), CLOSE_FINALIZE_DELAY_TICKS);
}
private void finalizeContainerClose(UUID golemId, OpenInteraction interaction, TransactionKey containerKey, int attempt) {
Entity entity = plugin.getServer().getEntity(golemId);
if (!(entity instanceof CopperGolem)) {
return;
}
BlockState blockState = interaction.location.getBlock().getState();
if (!(blockState instanceof InventoryHolder)) {
return;
}
Inventory inventory = ((InventoryHolder) blockState).getInventory();
if (inventory == null) {
return;
}
ItemStack[] currentContents = inventory.getContents();
if (currentContents == null) {
return;
}
boolean changed = hasInventoryChanged(interaction.baselineState, currentContents);
if (!changed) {
if (attempt < CLOSE_FINALIZE_MAX_ATTEMPTS) {
scheduleCloseFinalize(golemId, interaction, containerKey, attempt + 1);
}
return;
}
CopperGolem golem = (CopperGolem) entity;
if (!isAttributableToGolem(golem, interaction, currentContents)) {
return;
}
recordForcedContainerState(interaction.location, currentContents);
InventoryChangeListener.inventoryTransaction(USERNAME, interaction.location, interaction.baselineState);
}
private void finalizeUntrackedCopperChestClose(UUID golemId, Location containerLocation, Material containerType, int attempt) {
Entity entity = plugin.getServer().getEntity(golemId);
if (!(entity instanceof CopperGolem)) {
return;
}
if (!BukkitAdapter.ADAPTER.isCopperChest(containerType)) {
return;
}
CopperGolem golem = (CopperGolem) entity;
ItemStack heldNowStack = getHeldItemStack(golem);
if (isEmptyItem(heldNowStack) || heldNowStack == null || heldNowStack.getAmount() <= 0) {
if (attempt < CLOSE_FALLBACK_MAX_ATTEMPTS) {
scheduleUntrackedCopperChestCloseFinalize(golemId, containerLocation, containerType, attempt + 1);
}
return;
}
int heldAmount = heldNowStack.getAmount();
if (heldAmount > 16) {
return;
}
BlockState blockState = containerLocation.getBlock().getState();
if (!(blockState instanceof InventoryHolder) || !BukkitAdapter.ADAPTER.isCopperChest(blockState.getType())) {
return;
}
Inventory inventory = ((InventoryHolder) blockState).getInventory();
if (inventory == null) {
return;
}
ItemStack[] currentContents = inventory.getContents();
if (currentContents == null) {
return;
}
ItemStack[] baselineCandidate = reconstructCopperChestBaseline(currentContents, heldNowStack);
if (baselineCandidate == null) {
return;
}
recordForcedContainerState(containerLocation, currentContents);
InventoryChangeListener.inventoryTransaction(USERNAME, containerLocation, baselineCandidate);
}
private boolean isAttributableToGolem(CopperGolem golem, OpenInteraction interaction, ItemStack[] currentContents) {
boolean isCopperChest = BukkitAdapter.ADAPTER.isCopperChest(interaction.containerType);
HeldItemSnapshot heldNow = getHeldItemSnapshot(golem);
if (isCopperChest) {
if (heldNow.material == null || heldNow.amount <= 0) {
return false;
}
int baselineTotal = sumAllItems(interaction.baselineState);
int currentTotal = sumAllItems(currentContents);
int totalRemoved = baselineTotal - currentTotal;
if (totalRemoved != heldNow.amount) {
return false;
}
int removedSameMaterial = sumMaterialAmount(interaction.baselineState, heldNow.material) - sumMaterialAmount(currentContents, heldNow.material);
return removedSameMaterial == heldNow.amount;
}
Material heldMaterial = interaction.heldMaterial;
if (heldMaterial == null || interaction.heldAmount <= 0) {
return false;
}
if (!containsOnlyMaterial(currentContents, heldMaterial)) {
return false;
}
int baselineCount = sumMaterialAmount(interaction.baselineState, heldMaterial);
int currentCount = sumMaterialAmount(currentContents, heldMaterial);
int added = currentCount - baselineCount;
if (added <= 0) {
return false;
}
int heldAfter = (heldNow.material == heldMaterial ? heldNow.amount : 0);
int removedFromGolem = interaction.heldAmount - heldAfter;
return added == removedFromGolem;
}
private ItemStack getHeldItemStack(CopperGolem copperGolem) {
if (copperGolem == null) {
return null;
}
EntityEquipment equipment = copperGolem.getEquipment();
if (equipment == null) {
return null;
}
ItemStack mainHand = equipment.getItemInMainHand();
if (isEmptyItem(mainHand)) {
return null;
}
return mainHand.clone();
}
private ItemStack[] reconstructCopperChestBaseline(ItemStack[] currentContents, ItemStack heldNowStack) {
if (currentContents == null || heldNowStack == null || isEmptyItem(heldNowStack) || heldNowStack.getAmount() <= 0) {
return null; return null;
} }
return ItemUtils.getContainerState(inventory.getContents()); ItemStack[] baseline = ItemUtils.getContainerState(currentContents);
if (baseline == null) {
return null;
}
int addAmount = heldNowStack.getAmount();
int maxStack = heldNowStack.getMaxStackSize();
for (int i = 0; i < baseline.length; i++) {
ItemStack item = baseline[i];
if (item == null) {
continue;
}
if (item.isSimilar(heldNowStack)) {
if (item.getAmount() + addAmount > maxStack) {
return null;
}
item.setAmount(item.getAmount() + addAmount);
return baseline;
}
}
for (int i = 0; i < baseline.length; i++) {
ItemStack item = baseline[i];
if (isEmptyItem(item)) {
ItemStack placed = heldNowStack.clone();
placed.setAmount(addAmount);
baseline[i] = placed;
return baseline;
}
}
return null;
}
private void recordForcedContainerState(Location location, ItemStack[] contents) {
if (location == null) {
return;
}
ItemStack[] snapshot = ItemUtils.getContainerState(contents);
if (snapshot == null) {
return;
}
String loggingContainerId = USERNAME + "." + location.getBlockX() + "." + location.getBlockY() + "." + location.getBlockZ();
List<ItemStack[]> forceList = ConfigHandler.forceContainer.get(loggingContainerId);
if (forceList == null) {
forceList = Collections.synchronizedList(new ArrayList<>());
ConfigHandler.forceContainer.put(loggingContainerId, forceList);
}
forceList.add(snapshot);
}
private void cleanupOpenInteractions(long nowMillis) {
long last = lastCleanupMillis;
if (nowMillis - last < CLEANUP_INTERVAL_MILLIS) {
return;
}
lastCleanupMillis = nowMillis;
for (Map.Entry<UUID, OpenInteraction> entry : openInteractions.entrySet()) {
UUID golemId = entry.getKey();
OpenInteraction interaction = entry.getValue();
if (interaction == null || nowMillis - interaction.openedAtMillis > OPEN_INTERACTION_TIMEOUT_MILLIS || plugin.getServer().getEntity(golemId) == null) {
openInteractions.remove(golemId, interaction);
}
}
for (Map.Entry<UUID, RecentEmptyCopperChestSkip> entry : recentEmptyCopperChestSkips.entrySet()) {
UUID golemId = entry.getKey();
RecentEmptyCopperChestSkip skip = entry.getValue();
if (skip == null || nowMillis - skip.skippedAtMillis > EMPTY_COPPER_CHEST_SKIP_TTL_MILLIS || plugin.getServer().getEntity(golemId) == null) {
recentEmptyCopperChestSkips.remove(golemId, skip);
}
}
} }
private boolean hasInventoryChanged(ItemStack[] previousState, ItemStack[] currentState) { private boolean hasInventoryChanged(ItemStack[] previousState, ItemStack[] currentState) {
@ -158,30 +449,6 @@ public final class CopperGolemChestListener implements Listener {
return false; return false;
} }
private boolean shouldMonitorInteraction(Material blockType, ItemStack[] baselineState, Material heldMaterial) {
boolean isCopperChest = BukkitAdapter.ADAPTER.isCopperChest(blockType);
boolean isStandardChest = blockType == Material.CHEST || blockType == Material.TRAPPED_CHEST;
boolean golemHoldingItem = heldMaterial != null && heldMaterial != Material.AIR;
if (!isCopperChest && !isStandardChest) {
return false;
}
if (isCopperChest) {
return !golemHoldingItem && !isInventoryEmpty(baselineState);
}
if (!golemHoldingItem) {
return false;
}
if (isInventoryEmpty(baselineState)) {
return true;
}
return containsMaterial(baselineState, heldMaterial);
}
private boolean isInventoryEmpty(ItemStack[] state) { private boolean isInventoryEmpty(ItemStack[] state) {
if (state == null) { if (state == null) {
return true; return true;
@ -200,106 +467,122 @@ public final class CopperGolemChestListener implements Listener {
return item == null || item.getType().isAir() || item.getAmount() <= 0; return item == null || item.getType().isAir() || item.getAmount() <= 0;
} }
private Material getHeldItemMaterial(CopperGolem copperGolem) { private boolean containsOnlyMaterial(ItemStack[] state, Material material) {
if (copperGolem == null) {
return null;
}
EntityEquipment equipment = copperGolem.getEquipment();
if (equipment == null) {
return null;
}
ItemStack mainHand = equipment.getItemInMainHand();
if (isEmptyItem(mainHand)) {
return null;
}
return mainHand.getType();
}
private boolean containsMaterial(ItemStack[] state, Material material) {
if (state == null || material == null) { if (state == null || material == null) {
return false; return false;
} }
for (ItemStack item : state) { for (ItemStack item : state) {
if (item != null && item.getType() == material && item.getAmount() > 0) { if (isEmptyItem(item)) {
return true; continue;
}
} }
if (item.getType() != material) {
return false; return false;
} }
private boolean isThrottled(TransactionKey transactionKey) {
Long eligibleAt = throttleUntil.get(transactionKey);
if (eligibleAt == null) {
return false;
}
long now = System.currentTimeMillis();
if (eligibleAt <= now) {
throttleUntil.remove(transactionKey, eligibleAt);
return false;
} }
return true; return true;
} }
private final class PendingTransaction implements Runnable { private boolean hasSpaceForMaterial(ItemStack[] state, Material material) {
if (state == null || material == null) {
return false;
}
private final TransactionKey transactionKey; int maxStackSize = material.getMaxStackSize();
private final Location targetLocation; for (ItemStack item : state) {
private ItemStack[] baselineState; if (isEmptyItem(item)) {
private BukkitTask task; return true;
private long ticksElapsed; }
private long ticksSinceLastTrigger; if (item.getType() == material && item.getAmount() < maxStackSize) {
return true;
}
}
private PendingTransaction(TransactionKey transactionKey, Location targetLocation, ItemStack[] baselineState) { return false;
this.transactionKey = transactionKey; }
this.targetLocation = targetLocation;
private int sumMaterialAmount(ItemStack[] state, Material material) {
if (state == null || material == null) {
return 0;
}
int total = 0;
for (ItemStack item : state) {
if (!isEmptyItem(item) && item.getType() == material) {
total += item.getAmount();
}
}
return total;
}
private int sumAllItems(ItemStack[] state) {
if (state == null) {
return 0;
}
int total = 0;
for (ItemStack item : state) {
if (!isEmptyItem(item)) {
total += item.getAmount();
}
}
return total;
}
private HeldItemSnapshot getHeldItemSnapshot(CopperGolem copperGolem) {
if (copperGolem == null) {
return HeldItemSnapshot.EMPTY;
}
EntityEquipment equipment = copperGolem.getEquipment();
if (equipment == null) {
return HeldItemSnapshot.EMPTY;
}
ItemStack mainHand = equipment.getItemInMainHand();
if (isEmptyItem(mainHand)) {
return HeldItemSnapshot.EMPTY;
}
return new HeldItemSnapshot(mainHand.getType(), mainHand.getAmount());
}
private static final class OpenInteraction {
private final TransactionKey containerKey;
private final Location location;
private final Material containerType;
private final ItemStack[] baselineState;
private final Material heldMaterial;
private final int heldAmount;
private final long openedAtMillis;
private OpenInteraction(TransactionKey containerKey, Location location, Material containerType, ItemStack[] baselineState, Material heldMaterial, int heldAmount, long openedAtMillis) {
this.containerKey = containerKey;
this.location = location;
this.containerType = containerType;
this.baselineState = baselineState; this.baselineState = baselineState;
} this.heldMaterial = heldMaterial;
this.heldAmount = heldAmount;
private void start() { this.openedAtMillis = openedAtMillis;
task = plugin.getServer().getScheduler().runTaskTimer(plugin, this, INITIAL_DELAY_TICKS, POLL_INTERVAL_TICKS);
}
private void refresh(ItemStack[] newBaselineState) {
ticksSinceLastTrigger = 0L;
if (newBaselineState != null) {
baselineState = newBaselineState;
} }
} }
@Override private static final class RecentEmptyCopperChestSkip {
public void run() {
long increment = ticksElapsed == 0L ? INITIAL_DELAY_TICKS : POLL_INTERVAL_TICKS;
ticksElapsed += increment;
ticksSinceLastTrigger += increment;
if (ticksSinceLastTrigger > MAX_POLL_DURATION_TICKS) {
cancelAndRemove();
return;
}
ItemStack[] currentState = captureInventoryState(targetLocation); private final TransactionKey containerKey;
if (currentState == null) { private final long skippedAtMillis;
cancelAndRemove();
return;
}
boolean stateChanged = hasInventoryChanged(baselineState, currentState); private RecentEmptyCopperChestSkip(TransactionKey containerKey, long skippedAtMillis) {
if (stateChanged) { this.containerKey = containerKey;
InventoryChangeListener.inventoryTransaction(USERNAME, targetLocation, baselineState); this.skippedAtMillis = skippedAtMillis;
baselineState = ItemUtils.getContainerState(currentState);
// cancelAndRemove();
// return;
} }
} }
private void cancel() { private static final class HeldItemSnapshot {
if (task != null) {
task.cancel();
}
}
private void cancelAndRemove() { private static final HeldItemSnapshot EMPTY = new HeldItemSnapshot(null, 0);
cancel();
pendingTransactions.remove(transactionKey, this); private final Material material;
private final int amount;
private HeldItemSnapshot(Material material, int amount) {
this.material = material;
this.amount = amount;
} }
} }