Wrap around hpDec schedules (#75)

* Wrap around hpDec schedules

Merges hpDec schedules at character into a world schedule.

* Patch hpDec timer reset on changing maps

Patch timer reset on changing maps with hpDec.

* Update Character.java

* Update Client.java

* Update World.java

Co-authored-by: Ronan Lana <rcpl2010@gmail.com>

src/main/java/net/server/task/CharacterHpDecreaseTask.java

@@ -0,0 +1,37 @@
+/*
+    This file is part of the HeavenMS MapleStory Server
+    Copyleft (L) 2016 - 2019 RonanLana
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation version 3 as published by
+    the Free Software Foundation. You may not use, modify or distribute
+    this program under any other version of the GNU Affero General Public
+    License.
+
+    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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+package net.server.task;
+
+import net.server.world.World;
+
+/**
+ * @author Ronan
+ */
+public class CharacterHpDecreaseTask extends BaseTask implements Runnable {
+    
+    @Override
+    public void run() {
+        wserv.runPlayerHpDecreaseSchedule();
+    }
+    
+    public CharacterHpDecreaseTask(World world) {
+        super(world);
+    }
+}