Fixed some variable names to reflect some changes
Fixed some variable names to reflect some changes

brandonnchoii/VOOGASalad,keikumata/CS308_Tower_Defense,jeremydanielfox/game_engine,keikumata/CS308_Tower_Defense,ninasun/game_engine,PinPinx/TD_Game_Engine,brandonnchoii/VOOGASalad,PinPinx/TD_Game_Engine,Jgilhuly/VoogaSalad,ninasun/game_engine,jeremydanielfox/game_engine,Jgilhuly/VoogaSalad