Reward player Experience and Gold on PvP Kill (In BG)

/*************************************************************************
*                            [Created By],                               *
*                                 Tommy aka QQrofl                       *
*                                                                        *
*                                                                        *
**************************************************************************/
#include "ScriptPCH.h"
#include "Battleground.h"

enum Amounts
{
    MONEY_AMOUNT = 30000,
    EXPERIENCE_AMOUNT = 300
};

class reward_player_onkill : public PlayerScript
{
   public:
       reward_player_onkill() : PlayerScript("reward_player_onkill") { }

       void OnPVPKill(Player * killer, Player * victim)
       {
           if(killer->GetGUID() == victim->GetGUID())
               return;

           Battleground * bg = killer->GetBattleground();

           if(bg)
           {
               killer->ModifyMoney(killer->GetMoney() + MONEY_AMOUNT);
               killer->GiveXP(EXPERIENCE_AMOUNT, victim);
               killer->MonsterWhisper("|cffffff00Money and experience given!|r", killer->GetGUID());
           }
           else
           {
               // The player doesn't get the reward xp and money
               killer->MonsterWhisper("|cffffff00You must be in a battleground to receive the rewards.|r", killer->GetGUID());
           }
       }
};

void AddSC_reward_player_kill()
{
    new reward_player_onkill;
}