I think the term is 'ray casting' - though a quick bit of googling shows that wolfenstein 3d was ray casted, but doom was not. (instead Doom used a BSP-based te

I think the term is 'ray casting' - though a quick bit of googling shows that wolfenstein 3d was ray casted, but doom was not. (instead Doom used a BSP-based technique that I can't find a pithy name for)