I’m making a simple 3d first person pong and i need to set the balls speed to a constant, but getLinearVelocity includes both direction and speed, how would i get the speed part of the vector,set it, then recombine it with its direction then use that to do setLinearVelocity.
The linear speed is the magnitude of the velocity vector. The function is called length() in Vector3f.
To set a new linear velocity, use normalize() to get a vector of length 1.0 (“unit length”) that points in the same direction, then multiply() with the new desired speed.
Splitting a vector into length and direction is often not necessary though. For example, to double the speed, simply multiply() the vector by 2.0.
thanks, i understand what you are saying now just for curiousity how do you split it
“split” = process length and direction separately
i.e. the split is length() and normalize()