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/server/maps/MapleMap.java

@@ -2377,6 +2377,12 @@ public class MapleMap {
 
         chr.setMapId(mapid);
         chr.updateActiveEffects();
+        
+        if (this.getHPDec() > 0) {
+            getWorldServer().addPlayerHpDecrease(chr);
+        } else {
+            getWorldServer().removePlayerHpDecrease(chr);
+        }
 
         MapScriptManager msm = MapScriptManager.getInstance();
         if (chrSize == 1) {