try:
PHP Code:
class CTerrorGameRules;
class CTerrorPlayer;
/* In function int VersusCompletion::GetVersusCompletion(int *client) */
static int (CTerrorGameRules::*GetVersusCompletionFunc(CTerrorPlayer *);
/* Later in same function */
(static_cast<CTerrorGameRules *>(pGameRules)->*GetVersusCompletionFunc)(static_cast<CTerrorPlayer *>(pPlayer));
Also why are you passing a pointer instead of an integer to ReferenceToEntity, why is your client param a pointer anyway?