SiO2 wrote:Right, but there are some problems, like vertical camera rotation which is not compatible with DOOM style.
Was more a limitation of the engine, not of the style. Have to remember this was before 3d accelerators and clock speeds were 100x slower than today's computers. The technique actually persisted up until Unreal, Quake 3, something around there, and was still heavily used for several years for a lot of different situations after GPUs became common.