Apply setLastDamageCause after processing events and the event has not been canceled. Fixes BUKKIT-1881

This allows previous causes to be available during the event, as well as making the damage cause a valid one. If EntityDamageEvent is canceled, then it's not the last DamageCause.

Also prevents setting DamageCause involuntarily through construction.

By: feildmaster <admin@feildmaster.com>

paper-server/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java

@@ -360,7 +360,12 @@ public class CraftEventFactory {
         } else {
             event = new EntityDamageEvent(damagee.getBukkitEntity(), cause, damage);
         }
-        Bukkit.getPluginManager().callEvent(event);
+
+        callEvent(event);
+
+        if (!event.isCancelled()) {
+            event.getEntity().setLastDamageCause(event);
+        }
 
         return event;
     }