Anti-cheat fixes, settings and API (#287)

* Added options to disable movement checks and anti-instabreak and API methods to control this
* Fixed anti-flight false positives
* Fix flight toggle kick cannot be disabled
* Added PlayerIllegalMoveEvent

src/pocketmine/event/player/cheat/PlayerCheatEvent.php

@@ -0,0 +1,31 @@
+<?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/
+ *
+ *
+ */
+
+/**
+ * Events called when a player attempts to cheat
+ */
+namespace pocketmine\event\player\cheat;
+
+use pocketmine\event\player\PlayerEvent;
+
+abstract class PlayerCheatEvent extends PlayerEvent{
+
+}

src/pocketmine/event/player/cheat/PlayerIllegalMoveEvent.php

@@ -0,0 +1,45 @@
+<?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/
+ *
+ *
+ */
+
+/**
+ * Events called when a player attempts to perform movement cheats such as clipping through blocks.
+ */
+namespace pocketmine\event\player\cheat;
+
+use pocketmine\event\Cancellable;
+use pocketmine\Player;
+use pocketmine\math\Vector3;
+
+class PlayerIllegalMoveEvent extends PlayerCheatEvent implements Cancellable{
+	public static $handlerList = null;
+
+	private $attemptedPosition;
+
+	public function __construct(Player $player, Vector3 $attemptedPosition){
+		$this->attemptedPosition = $attemptedPosition;
+		$this->player = $player;
+	}
+
+	public function getAttemptedPosition() : Vector3{
+		return $this->attemptedPosition;
+	}
+
+}