From 7e4a19159339b2c68a3ac4e45cfaac438f39b276 Mon Sep 17 00:00:00 2001
From: Shoghi Cervantes <shoghicp@gmail.com>
Date: Sat, 16 Aug 2014 12:58:16 +0200
Subject: [PATCH] Added SignChangeEvent

---
 src/pocketmine/Player.php                     | 27 +++++--
 src/pocketmine/event/block/BlockEvent.php     |  8 ++
 .../event/block/SignChangeEvent.php           | 81 +++++++++++++++++++
 3 files changed, 108 insertions(+), 8 deletions(-)
 create mode 100644 src/pocketmine/event/block/SignChangeEvent.php

diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index e98e5e9ce..b6005a3db 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -27,6 +27,7 @@ use pocketmine\entity\DroppedItem;
 use pocketmine\entity\Entity;
 use pocketmine\entity\Human;
 use pocketmine\entity\Living;
+use pocketmine\event\block\SignChangeEvent;
 use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\event\inventory\InventoryCloseEvent;
@@ -2016,18 +2017,28 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 				}
 				$this->craftingType = 0;
 
-				$t = $this->getLevel()->getTile(new Vector3($packet->x, $packet->y, $packet->z));
+				$t = $this->getLevel()->getTile($v = new Vector3($packet->x, $packet->y, $packet->z));
 				if($t instanceof Sign){
-					if(!isset($t->namedtag->Creator) or $t->namedtag["Creator"] !== $this->username){
+					$nbt = new NBT(NBT::LITTLE_ENDIAN);
+					$nbt->read($packet->namedtag);
+					$nbt = $nbt->getData();
+					if($nbt["id"] !== Tile::SIGN){
 						$t->spawnTo($this);
 					}else{
-						$nbt = new NBT(NBT::LITTLE_ENDIAN);
-						$nbt->read($packet->namedtag);
-						$nbt = $nbt->getData();
-						if($nbt["id"] !== Tile::SIGN){
-							$t->spawnTo($this);
+						$ev = new SignChangeEvent($this->getLevel()->getBlock($v), $this, [
+							$nbt["Text1"], $nbt["Text2"], $nbt["Text3"], $nbt["Text4"]
+						]);
+
+						if(!isset($t->namedtag->Creator) or $t->namedtag["Creator"] !== $this->username){
+							$ev->setCancelled(true);
+						}
+
+						$this->server->getPluginManager()->callEvent($ev);
+
+						if(!$ev->isCancelled()){
+							$t->setText($ev->getLine(0), $ev->getLine(1), $ev->getLine(2), $ev->getLine(3));
 						}else{
-							$t->setText($nbt["Text1"], $nbt["Text2"], $nbt["Text3"], $nbt["Text4"]);
+							$t->spawnTo($this);
 						}
 					}
 				}
diff --git a/src/pocketmine/event/block/BlockEvent.php b/src/pocketmine/event/block/BlockEvent.php
index e5bb1eb61..e40e05f33 100644
--- a/src/pocketmine/event/block/BlockEvent.php
+++ b/src/pocketmine/event/block/BlockEvent.php
@@ -24,12 +24,20 @@
  */
 namespace pocketmine\event\block;
 
+use pocketmine\block\Block;
 use pocketmine\event\Event;
 
 abstract class BlockEvent extends Event{
 	/** @var \pocketmine\block\Block */
 	protected $block;
 
+	/**
+	 * @param Block $block
+	 */
+	protected function __construct(Block $block){
+		$this->block = $block;
+	}
+
 	public function getBlock(){
 		return $this->block;
 	}
diff --git a/src/pocketmine/event/block/SignChangeEvent.php b/src/pocketmine/event/block/SignChangeEvent.php
new file mode 100644
index 000000000..a434965e6
--- /dev/null
+++ b/src/pocketmine/event/block/SignChangeEvent.php
@@ -0,0 +1,81 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * 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.
+ *
+ * @author PocketMine Team
+ * @link   http://www.pocketmine.net/
+ *
+ *
+ */
+
+namespace pocketmine\event\block;
+
+use pocketmine\block\Block;
+use pocketmine\event\Cancellable;
+use pocketmine\item\Item;
+use pocketmine\Player;
+
+/**
+ * Called when a sign is changed by a player.
+ */
+class SignChangeEvent extends BlockEvent implements Cancellable{
+	public static $handlerList = null;
+
+	/** @var \pocketmine\Player */
+	private $player;
+	/** @var string[] */
+	private $lines = [];
+
+	/**
+	 * @param Block    $theBlock
+	 * @param Player   $thePlayer
+	 * @param string[] $theLines
+	 */
+	public function __construct(Block $theBlock, Player $thePlayer, array $theLines){
+		parent::__construct($theBlock);
+		$this->player = $thePlayer;
+		$this->lines = $theLines;
+	}
+
+	/**
+	 * @return Player
+	 */
+	public function getPlayer(){
+		return $this->player;
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getLines(){
+		return $this->lines;
+	}
+
+	/**
+	 * @param int $index 0-3
+	 *
+	 * @return string
+	 */
+	public function getLine($index){
+		return $this->lines[$index];
+	}
+
+	/**
+	 * @param int $index 0-3
+	 * @param string $line
+	 */
+	public function setLine($index, $line){
+		$this->lines[$index] = $line;
+	}
+}
\ No newline at end of file