如何根据另一个向量的方向调整向量?

我正在做一个简单的小游戏/模拟,我想弹起一个球。我试着让球弹得不太现实,但更多的是以一种“游戏宇宙”的方式。

我要处理这些变量:

Vector ball_direction; // Direction the ball was moving in prior to impact
Vector ball_bounce_direction; // New direction of the ball computed from the collided face's normal
Vector collide_face_normal; // The normal of the collided face
Vector collide_face_perp; // perpendicular to the normal of the collided face
Vector gravity; // The gravity of the world-- doesn't really factor in since I want to do this operation based on the collision normal

将球反弹方向乘以碰撞面法向上的0.6。 将球反弹方向乘以碰撞面方向上的1.0。

有人能告诉我我需要做些什么才能达到这个目的吗?