為什麼末日之子在牆上開槍會殺死敵人？

在這段很長的影片中，玩家向牆壁發射火箭，對怪物造成傷害。

What’s going on here? Which bug/feature is this?

Doom 1 and 2 are not truly 3D. All the game physics and hit detection assumes everything is at the same height, even if it looks like it’s not. So even though there is a large total distance between the enemies, most of that distance is vertical. The horizontal distance is very small, so the enemies are still within the blast radius.

引用自：https://gaming.stackexchange.com/questions/362382