How do I find this direction vector?

Questions & Answers
1

I’m trying to find a vector which is facing the direction of the camera and is parallel to the x-axis so that I can apply an even force regardless of the x-rotation of the camera. What I have below works but I feel like it’s sloppy and there’s another way. Is there and if so, what is it?

float camAngle;
Vector3 moveDirection;

camAngle = Camera.main.transform.eulerAngles.x;
Camera.main.transform.eulerAngles = new Vector3(0, Camera.main.transform.eulerAngles.y, Camera.main.transform.eulerAngles.z);
moveDirection = Camera.main.transform.TransformDirection(Vector3.forward);
Camera.main.transform.eulerAngles = new Vector3(camAngle, Camera.main.transform.eulerAngles.y, Camera.main.transform.eulerAngles.z);
2

Try this:

// Get the direction of the camera
moveDirection = Camera.main.transform.forward;
// Make this vector planar (xz-plane)
moveDirection.y = 0.0f;
// Normalize to get a unit vector (optional)
Vector3.Normalize(moveDirection);
3

When you have a 3-dimensional vector whith x, y and z and you delete the y coordinate you get a 2dimensional vector which is not pointing up or down.

newVector=Vector3(oldVector.x, 0, oldVector.z);

hope this works if it isn’t the y try the same thing with x and z.