c++ - Implementing zoom along the gun

Question

I'm making some game, and I have made it pretty much all, but not zoom along the gun ability, 'cause I have no clue how to set up it. The game is done in 3D using openGL, so I would like to hear your propositions for how to implement it. If required, snippets of the code can be delivered.

Answer 1

Quake 3“缩放”效果是通过改变透视摄像机的 FOV 来实现的。看这里。