Variable damage to/from mobs

* Player weapons and armor ratings are taken into account when damaging/getting damaged by mobs.
* Players have a 5% chance to critical strike mobs, this doubles the player's weapon power.
* Aside from player and mob stat based damage variance, there is also an inherent 20% variance to any damage.

src/Player.hpp

@@ -46,6 +46,10 @@ struct Player {
 
     bool inCombat;
     bool dotDamage;
+    
+    int pointDamage;
+    int groupDamage;
+    int defense;
 
     int64_t aQuestFlag[16];
     int tasks[ACTIVE_MISSION_COUNT];