bool SetActivatorToPlayer2(int player)
This function first attempts to use SetActivatorToPlayer, then, if it fails (for example, due to the mod running in ZDoom), it attemps to use
SetActivator(0, AAPTR_PLAYER1<<player). If that fails, or if a player number over 7 was requested, the function returns false.
The function returns true if the activator has been successfully changed to the specified player number.