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LocalSession.java
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LocalSession.java
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/*
* WorldEdit, a Minecraft world manipulation toolkit
* Copyright (C) sk89q <http://www.sk89q.com>
* Copyright (C) WorldEdit 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.worldedit;
import static com.google.common.base.Preconditions.checkNotNull;
import com.sk89q.jchronic.Chronic;
import com.sk89q.jchronic.Options;
import com.sk89q.jchronic.utils.Span;
import com.sk89q.jchronic.utils.Time;
import com.sk89q.jnbt.IntTag;
import com.sk89q.jnbt.Tag;
import com.sk89q.worldedit.command.tool.BlockTool;
import com.sk89q.worldedit.command.tool.BrushTool;
import com.sk89q.worldedit.command.tool.InvalidToolBindException;
import com.sk89q.worldedit.command.tool.SinglePickaxe;
import com.sk89q.worldedit.command.tool.Tool;
import com.sk89q.worldedit.entity.Player;
import com.sk89q.worldedit.extension.platform.Actor;
import com.sk89q.worldedit.extent.inventory.BlockBag;
import com.sk89q.worldedit.function.mask.Mask;
import com.sk89q.worldedit.function.operation.Operation;
import com.sk89q.worldedit.function.operation.RunContext;
import com.sk89q.worldedit.internal.cui.CUIEvent;
import com.sk89q.worldedit.internal.cui.CUIRegion;
import com.sk89q.worldedit.internal.cui.SelectionShapeEvent;
import com.sk89q.worldedit.internal.cui.ServerCUIHandler;
import com.sk89q.worldedit.regions.Region;
import com.sk89q.worldedit.regions.RegionSelector;
import com.sk89q.worldedit.regions.selector.CuboidRegionSelector;
import com.sk89q.worldedit.regions.selector.RegionSelectorType;
import com.sk89q.worldedit.session.ClipboardHolder;
import com.sk89q.worldedit.session.request.Request;
import com.sk89q.worldedit.world.World;
import com.sk89q.worldedit.world.block.BaseBlock;
import com.sk89q.worldedit.world.item.ItemType;
import com.sk89q.worldedit.world.item.ItemTypes;
import com.sk89q.worldedit.world.snapshot.Snapshot;
import java.util.Calendar;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
import java.util.TimeZone;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.annotation.Nullable;
/**
* Stores session information.
*/
public class LocalSession {
public transient static int MAX_HISTORY_SIZE = 15;
// Non-session related fields
private transient LocalConfiguration config;
private transient final AtomicBoolean dirty = new AtomicBoolean();
private transient int failedCuiAttempts = 0;
// Session related
private transient RegionSelector selector = new CuboidRegionSelector();
private transient boolean placeAtPos1 = false;
private transient LinkedList<EditSession> history = new LinkedList<>();
private transient int historyPointer = 0;
private transient ClipboardHolder clipboard;
private transient boolean toolControl = true;
private transient boolean superPickaxe = false;
private transient BlockTool pickaxeMode = new SinglePickaxe();
private transient Map<ItemType, Tool> tools = new HashMap<>();
private transient int maxBlocksChanged = -1;
private transient boolean useInventory;
private transient Snapshot snapshot;
private transient boolean hasCUISupport = false;
private transient int cuiVersion = -1;
private transient boolean fastMode = false;
private transient Mask mask;
private transient TimeZone timezone = TimeZone.getDefault();
private transient Vector cuiTemporaryBlock;
private transient LinkedList<Operation> operationQueue = new LinkedList<>();
private transient boolean operationQueuePaused = false;
// Saved properties
private String lastScript;
private RegionSelectorType defaultSelector;
private boolean useServerCUI = false; // Save this to not annoy players.
/**
* Construct the object.
*
* <p>{@link #setConfiguration(LocalConfiguration)} should be called
* later with configuration.</p>
*/
public LocalSession() {
}
/**
* Construct the object.
*
* @param config the configuration
*/
public LocalSession(@Nullable LocalConfiguration config) {
this.config = config;
}
/**
* Set the configuration.
*
* @param config the configuration
*/
public void setConfiguration(LocalConfiguration config) {
checkNotNull(config);
this.config = config;
}
/**
* Called on post load of the session from persistent storage.
*/
public void postLoad() {
if (defaultSelector != null) {
this.selector = defaultSelector.createSelector();
}
}
/**
* Get whether this session is "dirty" and has changes that needs to
* be committed.
*
* @return true if dirty
*/
public boolean isDirty() {
return dirty.get();
}
/**
* Set this session as dirty.
*/
private void setDirty() {
dirty.set(true);
}
/**
* Get whether this session is "dirty" and has changes that needs to
* be committed, and reset it to {@code false}.
*
* @return true if the dirty value was {@code true}
*/
public boolean compareAndResetDirty() {
return dirty.compareAndSet(true, false);
}
/**
* Get the session's timezone.
*
* @return the timezone
*/
public TimeZone getTimeZone() {
return timezone;
}
/**
* Set the session's timezone.
*
* @param timezone the user's timezone
*/
public void setTimezone(TimeZone timezone) {
checkNotNull(timezone);
this.timezone = timezone;
}
/**
* Clear history.
*/
public void clearHistory() {
history.clear();
historyPointer = 0;
}
/**
* Remember an edit session for the undo history. If the history maximum
* size is reached, old edit sessions will be discarded.
*
* @param editSession the edit session
*/
public void remember(EditSession editSession) {
checkNotNull(editSession);
// Don't store anything if no changes were made
if (editSession.size() == 0) return;
// Destroy any sessions after this undo point
while (historyPointer < history.size()) {
history.remove(historyPointer);
}
history.add(editSession);
while (history.size() > MAX_HISTORY_SIZE) {
history.remove(0);
}
historyPointer = history.size();
}
/**
* Performs an undo.
*
* @param newBlockBag a new block bag
* @param player the player
* @return whether anything was undone
*/
public EditSession undo(@Nullable BlockBag newBlockBag, Player player) {
checkNotNull(player);
--historyPointer;
if (historyPointer >= 0) {
EditSession editSession = history.get(historyPointer);
EditSession newEditSession = WorldEdit.getInstance().getEditSessionFactory()
.getEditSession(editSession.getWorld(), -1, newBlockBag, player);
newEditSession.enableQueue();
newEditSession.setFastMode(fastMode);
editSession.undo(newEditSession);
return editSession;
} else {
historyPointer = 0;
return null;
}
}
/**
* Performs a redo
*
* @param newBlockBag a new block bag
* @param player the player
* @return whether anything was redone
*/
public EditSession redo(@Nullable BlockBag newBlockBag, Player player) {
checkNotNull(player);
if (historyPointer < history.size()) {
EditSession editSession = history.get(historyPointer);
EditSession newEditSession = WorldEdit.getInstance().getEditSessionFactory()
.getEditSession(editSession.getWorld(), -1, newBlockBag, player);
newEditSession.enableQueue();
newEditSession.setFastMode(fastMode);
editSession.redo(newEditSession);
++historyPointer;
return editSession;
}
return null;
}
/**
* Get the default region selector.
*
* @return the default region selector
*/
public RegionSelectorType getDefaultRegionSelector() {
return defaultSelector;
}
/**
* Set the default region selector.
*
* @param defaultSelector the default region selector
*/
public void setDefaultRegionSelector(RegionSelectorType defaultSelector) {
checkNotNull(defaultSelector);
this.defaultSelector = defaultSelector;
setDirty();
}
/**
* Get the region selector for defining the selection. If the selection
* was defined for a different world, the old selection will be discarded.
*
* @param world the world
* @return position the position
*/
public RegionSelector getRegionSelector(World world) {
checkNotNull(world);
if (selector.getWorld() == null || !selector.getWorld().equals(world)) {
selector.setWorld(world);
selector.clear();
}
return selector;
}
/**
* Set the region selector.
*
* @param world the world
* @param selector the selector
*/
public void setRegionSelector(World world, RegionSelector selector) {
checkNotNull(world);
checkNotNull(selector);
selector.setWorld(world);
this.selector = selector;
}
/**
* Returns true if the region is fully defined for the specified world.
*
* @param world the world
* @return true if a region selection is defined
*/
public boolean isSelectionDefined(World world) {
checkNotNull(world);
if (selector.getIncompleteRegion().getWorld() == null || !selector.getIncompleteRegion().getWorld().equals(world)) {
return false;
}
return selector.isDefined();
}
/**
* Get the selection region. If you change the region, you should
* call learnRegionChanges(). If the selection is defined in
* a different world, the {@code IncompleteRegionException}
* exception will be thrown.
*
* @param world the world
* @return a region
* @throws IncompleteRegionException if no region is selected
*/
public Region getSelection(World world) throws IncompleteRegionException {
checkNotNull(world);
if (selector.getIncompleteRegion().getWorld() == null || !selector.getIncompleteRegion().getWorld().equals(world)) {
throw new IncompleteRegionException();
}
return selector.getRegion();
}
/**
* Get the selection world.
*
* @return the the world of the selection
*/
public World getSelectionWorld() {
return selector.getIncompleteRegion().getWorld();
}
/**
* Gets the clipboard.
*
* @return clipboard
* @throws EmptyClipboardException thrown if no clipboard is set
*/
public ClipboardHolder getClipboard() throws EmptyClipboardException {
if (clipboard == null) {
throw new EmptyClipboardException();
}
return clipboard;
}
/**
* Sets the clipboard.
*
* <p>Pass {@code null} to clear the clipboard.</p>
*
* @param clipboard the clipboard, or null if the clipboard is to be cleared
*/
public void setClipboard(@Nullable ClipboardHolder clipboard) {
this.clipboard = clipboard;
}
/**
* See if tool control is enabled.
*
* @return true if enabled
*/
public boolean isToolControlEnabled() {
return toolControl;
}
/**
* Change tool control setting.
*
* @param toolControl true to enable tool control
*/
public void setToolControl(boolean toolControl) {
this.toolControl = toolControl;
}
/**
* Get the maximum number of blocks that can be changed in an edit session.
*
* @return block change limit
*/
public int getBlockChangeLimit() {
return maxBlocksChanged;
}
/**
* Set the maximum number of blocks that can be changed.
*
* @param maxBlocksChanged the maximum number of blocks changed
*/
public void setBlockChangeLimit(int maxBlocksChanged) {
this.maxBlocksChanged = maxBlocksChanged;
}
/**
* Checks whether the super pick axe is enabled.
*
* @return status
*/
public boolean hasSuperPickAxe() {
return superPickaxe;
}
/**
* Enable super pick axe.
*/
public void enableSuperPickAxe() {
superPickaxe = true;
}
/**
* Disable super pick axe.
*/
public void disableSuperPickAxe() {
superPickaxe = false;
}
/**
* Toggle the super pick axe.
*
* @return whether the super pick axe is now enabled
*/
public boolean toggleSuperPickAxe() {
superPickaxe = !superPickaxe;
return superPickaxe;
}
/**
* Get the position use for commands that take a center point
* (i.e. //forestgen, etc.).
*
* @param player the player
* @return the position to use
* @throws IncompleteRegionException thrown if a region is not fully selected
*/
public Vector getPlacementPosition(Player player) throws IncompleteRegionException {
checkNotNull(player);
if (!placeAtPos1) {
return player.getBlockIn().toVector();
}
return selector.getPrimaryPosition();
}
/**
* Toggle placement position.
*
* @return whether "place at position 1" is now enabled
*/
public boolean togglePlacementPosition() {
placeAtPos1 = !placeAtPos1;
return placeAtPos1;
}
/**
* Get a block bag for a player.
*
* @param player the player to get the block bag for
* @return a block bag
*/
@Nullable
public BlockBag getBlockBag(Player player) {
checkNotNull(player);
if (!useInventory) {
return null;
}
return player.getInventoryBlockBag();
}
/**
* Get the snapshot that has been selected.
*
* @return the snapshot
*/
@Nullable
public Snapshot getSnapshot() {
return snapshot;
}
/**
* Select a snapshot.
*
* @param snapshot a snapshot
*/
public void setSnapshot(@Nullable Snapshot snapshot) {
this.snapshot = snapshot;
}
/**
* Get the assigned block tool.
*
* @return the super pickaxe tool mode
*/
public BlockTool getSuperPickaxe() {
return pickaxeMode;
}
/**
* Set the super pick axe tool.
*
* @param tool the tool to set
*/
public void setSuperPickaxe(BlockTool tool) {
checkNotNull(tool);
this.pickaxeMode = tool;
}
/**
* Get the tool assigned to the item.
*
* @param item the item type
* @return the tool, which may be {@link null}
*/
@Nullable
public Tool getTool(ItemType item) {
return tools.get(item);
}
/**
* Get the brush tool assigned to the item. If there is no tool assigned
* or the tool is not assigned, the slot will be replaced with the
* brush tool.
*
* @param item the item type
* @return the tool, or {@code null}
* @throws InvalidToolBindException if the item can't be bound to that item
*/
public BrushTool getBrushTool(ItemType item) throws InvalidToolBindException {
Tool tool = getTool(item);
if (!(tool instanceof BrushTool)) {
tool = new BrushTool("worldedit.brush.sphere");
setTool(item, tool);
}
return (BrushTool) tool;
}
/**
* Set the tool.
*
* @param item the item type
* @param tool the tool to set, which can be {@code null}
* @throws InvalidToolBindException if the item can't be bound to that item
*/
public void setTool(ItemType item, @Nullable Tool tool) throws InvalidToolBindException {
if (item.hasBlockType()) {
throw new InvalidToolBindException(item, "Blocks can't be used");
} else if (item == ItemTypes.get(config.wandItem)) {
throw new InvalidToolBindException(item, "Already used for the wand");
} else if (item == ItemTypes.get(config.navigationWand)) {
throw new InvalidToolBindException(item, "Already used for the navigation wand");
}
this.tools.put(item, tool);
}
/**
* Returns whether inventory usage is enabled for this session.
*
* @return if inventory is being used
*/
public boolean isUsingInventory() {
return useInventory;
}
/**
* Set the state of inventory usage.
*
* @param useInventory if inventory is to be used
*/
public void setUseInventory(boolean useInventory) {
this.useInventory = useInventory;
}
/**
* Get the last script used.
*
* @return the last script's name
*/
@Nullable
public String getLastScript() {
return lastScript;
}
/**
* Set the last script used.
*
* @param lastScript the last script's name
*/
public void setLastScript(@Nullable String lastScript) {
this.lastScript = lastScript;
setDirty();
}
/**
* Tell the player the WorldEdit version.
*
* @param player the player
*/
public void tellVersion(Actor player) {
}
public boolean shouldUseServerCUI() {
return this.useServerCUI;
}
public void setUseServerCUI(boolean useServerCUI) {
this.useServerCUI = useServerCUI;
setDirty();
}
/**
* Update server-side WorldEdit CUI.
*
* @param actor The player
*/
public void updateServerCUI(Actor actor) {
if (!actor.isPlayer()) {
return; // This is for players only.
}
if (!config.serverSideCUI) {
return; // Disabled in config.
}
Player player = (Player) actor;
if (!useServerCUI || hasCUISupport) {
if (cuiTemporaryBlock != null) {
player.sendFakeBlock(cuiTemporaryBlock, null);
cuiTemporaryBlock = null;
}
return; // If it's not enabled, ignore this.
}
// Remove the old block.
if (cuiTemporaryBlock != null) {
player.sendFakeBlock(cuiTemporaryBlock, null);
cuiTemporaryBlock = null;
}
BaseBlock block = ServerCUIHandler.createStructureBlock(player);
if (block != null) {
// If it's null, we don't need to do anything. The old was already removed.
Map<String, Tag> tags = block.getNbtData().getValue();
cuiTemporaryBlock = new Vector(
((IntTag) tags.get("x")).getValue(),
((IntTag) tags.get("y")).getValue(),
((IntTag) tags.get("z")).getValue()
);
player.sendFakeBlock(cuiTemporaryBlock, block);
}
}
/**
* Dispatch a CUI event but only if the actor has CUI support.
*
* @param actor the actor
* @param event the event
*/
public void dispatchCUIEvent(Actor actor, CUIEvent event) {
checkNotNull(actor);
checkNotNull(event);
if (hasCUISupport) {
actor.dispatchCUIEvent(event);
} else if (useServerCUI) {
updateServerCUI(actor);
}
}
/**
* Dispatch the initial setup CUI messages.
*
* @param actor the actor
*/
public void dispatchCUISetup(Actor actor) {
if (selector != null) {
dispatchCUISelection(actor);
}
}
/**
* Send the selection information.
*
* @param actor the actor
*/
public void dispatchCUISelection(Actor actor) {
checkNotNull(actor);
if (!hasCUISupport) {
if (useServerCUI) {
updateServerCUI(actor);
}
return;
}
if (selector instanceof CUIRegion) {
CUIRegion tempSel = (CUIRegion) selector;
if (tempSel.getProtocolVersion() > cuiVersion) {
actor.dispatchCUIEvent(new SelectionShapeEvent(tempSel.getLegacyTypeID()));
tempSel.describeLegacyCUI(this, actor);
} else {
actor.dispatchCUIEvent(new SelectionShapeEvent(tempSel.getTypeID()));
tempSel.describeCUI(this, actor);
}
}
}
/**
* Describe the selection to the CUI actor.
*
* @param actor the actor
*/
public void describeCUI(Actor actor) {
checkNotNull(actor);
if (!hasCUISupport) {
return;
}
if (selector instanceof CUIRegion) {
CUIRegion tempSel = (CUIRegion) selector;
if (tempSel.getProtocolVersion() > cuiVersion) {
tempSel.describeLegacyCUI(this, actor);
} else {
tempSel.describeCUI(this, actor);
}
}
}
/**
* Handle a CUI initialization message.
*
* @param text the message
*/
public void handleCUIInitializationMessage(String text) {
checkNotNull(text);
if (this.failedCuiAttempts > 3) {
return;
}
String[] split = text.split("\\|", 2);
if (split.length > 1 && split[0].equalsIgnoreCase("v")) { // enough fields and right message
if (split[1].length() > 4) {
this.failedCuiAttempts ++;
return;
}
setCUISupport(true);
try {
setCUIVersion(Integer.parseInt(split[1]));
} catch (NumberFormatException e) {
WorldEdit.logger.warning("Error while reading CUI init message: " + e.getMessage());
this.failedCuiAttempts ++;
}
}
}
/**
* Gets the status of CUI support.
*
* @return true if CUI is enabled
*/
public boolean hasCUISupport() {
return hasCUISupport;
}
/**
* Sets the status of CUI support.
*
* @param support true if CUI is enabled
*/
public void setCUISupport(boolean support) {
hasCUISupport = support;
}
/**
* Gets the client's CUI protocol version
*
* @return the CUI version
*/
public int getCUIVersion() {
return cuiVersion;
}
/**
* Sets the client's CUI protocol version
*
* @param cuiVersion the CUI version
*/
public void setCUIVersion(int cuiVersion) {
this.cuiVersion = cuiVersion;
}
/**
* Detect date from a user's input.
*
* @param input the input to parse
* @return a date
*/
@Nullable
public Calendar detectDate(String input) {
checkNotNull(input);
Time.setTimeZone(getTimeZone());
Options opt = new com.sk89q.jchronic.Options();
opt.setNow(Calendar.getInstance(getTimeZone()));
Span date = Chronic.parse(input, opt);
if (date == null) {
return null;
} else {
return date.getBeginCalendar();
}
}
/**
* Construct a new edit session.
*
* @param player the player
* @return an edit session
*/
public EditSession createEditSession(Player player) {
checkNotNull(player);
BlockBag blockBag = getBlockBag(player);
// Create an edit session
EditSession editSession = WorldEdit.getInstance().getEditSessionFactory()
.getEditSession(player.isPlayer() ? player.getWorld() : null,
getBlockChangeLimit(), blockBag, player);
editSession.setFastMode(fastMode);
Request.request().setEditSession(editSession);
editSession.setMask(mask);
return editSession;
}
/**
* Checks if the session has fast mode enabled.
*
* @return true if fast mode is enabled
*/
public boolean hasFastMode() {
return fastMode;
}
/**
* Set fast mode.
*
* @param fastMode true if fast mode is enabled
*/
public void setFastMode(boolean fastMode) {
this.fastMode = fastMode;
}
/**
* Get the mask.
*
* @return mask, may be null
*/
public Mask getMask() {
return mask;
}
/**
* Set a mask.
*
* @param mask mask or null
*/
public void setMask(Mask mask) {
this.mask = mask;
}
/**
* Add a {@link Operation} to the queue.
*
* @param actor The actor, if present
* @param operation The operation
*/
public void enqeueOperation(@Nullable Actor actor, Operation operation) {
checkNotNull(operation);
operationQueue.addLast(operation);
if (actor != null) {
actor.print("Queued Operation");
}
}
/**
* Run the next item in the operation queue.
*
* @param actor The actor for feedback, if present
*/
public void runQueue(@Nullable Actor actor) {
if (isRunningOperations()) {
Operation op = operationQueue.poll();
try {
op = op.resume(new RunContext());
if (op != null) {
operationQueue.addFirst(op);
}
} catch (WorldEditException e) {
throw new RuntimeException(e);
}
}
}
/**
* Checks if the operation queue is running
*
* @return If the session is performing a queue
*/
public boolean isRunningOperations() {
return !operationQueuePaused && !operationQueue.isEmpty();
}
}