Implemented health, events, damage, motion push

src/pocketmine/event/entity/EntityDamageEvent.php

@@ -0,0 +1,147 @@
+<?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\entity;
+
+use pocketmine\entity\Entity;
+use pocketmine\event\Cancellable;
+
+class EntityDamageEvent extends EntityEvent implements Cancellable{
+	public static $handlerList = null;
+
+	const MODIFIER_BASE = 0;
+	const MODIFIER_ARMOR = 1;
+
+	const CAUSE_CONTACT = 0;
+	const CAUSE_ENTITY_ATTACK = 1;
+	const CAUSE_PROJECTILE = 2;
+	const CAUSE_SUFFOCATION = 3;
+	const CAUSE_FALL = 4;
+	const CAUSE_FIRE = 5;
+	const CAUSE_FIRE_TICK = 6;
+	const CAUSE_LAVA = 7;
+	const CAUSE_DROWNING = 8;
+	const CAUSE_BLOCK_EXPLOSION = 9;
+	const CAUSE_ENTITY_EXPLOSION = 10;
+	const CAUSE_VOID = 11;
+	const CAUSE_SUICIDE = 12;
+	const CAUSE_MAGIC = 13;
+	const CAUSE_CUSTOM = 14;
+
+
+	private $cause;
+	/** @var array */
+	private $modifiers;
+	private $originals;
+
+
+	/**
+	 * @param Entity    $entity
+	 * @param int       $cause
+	 * @param int|int[] $damage
+	 *
+	 * @throws \Exception
+	 */
+	public function __construct(Entity $entity, $cause, $damage){
+		$this->entity = $entity;
+		$this->cause = $cause;
+		if(is_array($damage)){
+			$this->modifiers = $damage;
+		}else{
+			$this->modifiers = [
+				self::MODIFIER_BASE => $damage
+			];
+		}
+
+		$this->originals = $this->modifiers;
+
+		if(!isset($this->modifiers[self::MODIFIER_BASE])){
+			throw new \Exception("BASE Damage modifier missing");
+		}
+	}
+
+	/**
+	 * @return int
+	 */
+	public function getCause(){
+		return $this->cause;
+	}
+
+	/**
+	 * @param int $type
+	 *
+	 * @return int
+	 */
+	public function getOriginalDamage($type = self::MODIFIER_BASE){
+		if(isset($this->originals[$type])){
+			return $this->originals[$type];
+		}
+
+		return 0;
+	}
+
+	/**
+	 * @param int $type
+	 *
+	 * @return int
+	 */
+	public function getDamage($type = self::MODIFIER_BASE){
+		if(isset($this->modifiers[$type])){
+			return $this->modifiers[$type];
+		}
+
+		return 0;
+	}
+
+	/**
+	 * @param float $damage
+	 * @param int   $type
+	 *
+	 * @throws \UnexpectedValueException
+	 */
+	public function setDamage($damage, $type = self::MODIFIER_BASE){
+		if(!isset($this->modifiers[$type])){
+			throw new \UnexpectedValueException($type ." is not applicable to ".$this->getEntity());
+		}
+		$this->modifiers[$type] = $damage;
+	}
+
+	/**
+	 * @param int $type
+	 *
+	 * @return bool
+	 */
+	public function isApplicable($type){
+		return isset($this->modifiers[$type]);
+	}
+
+	/**
+	 * @return int
+	 */
+	public function getFinalDamage(){
+		$damage = 0;
+		foreach($this->modifiers as $type => $d){
+			$damage += $d;
+		}
+		return $damage;
+	}
+
+}