So I've been looking through every last file in DOOM 3 looking for any reference to acocard.tga, as it is definitely used to display the key once picked up on the HUD, but the file itself is just a white square and some other part of the game has to reference it because I modified the file to make sure that the game does indeed use it. Does anyone know how the keycard HUD graphic is displayed or a file that mentions that TGA?