Yeah is fast and cheap because the BSP tree is created after the level mapped out. It's also why "Will it run DOOM?!" is a thing. For further reading: https:/

Yeah is fast and cheap because the BSP tree is created after the level mapped out. It's also why "Will it run DOOM?!" is a thing. For further reading: https://en.wikipedia.org/wiki/Doom_engine#Binary_space_partitioning https://en.wikipedia.org/wiki/Doom_engine#Binary_space_parti... https://en.wikipedia.org/wiki/Binary_space_partitioning#Application https://en.wikipedia.org/wiki/Binary_space_partitioning#Appl...