move character at constant speed, and detect collisions.

Questions & Answers
1

I have a terrain which isn’t flat.
and I have a capsule collider object.
I can move the object at a constant speed using the:

transform.Translate(Input.GetAxis("Horizontal") * Time.deltaTime * speed, 0, Input.GetAxis("Vertical") * Time.deltaTime * speed);

and the object moving on all the axis perfect, including the Y-axis, because of the rigidbody component reacting to the terrain collider.
the problem is: when I put a wall with Box Collider. and set my object’s rigidbody Collision detection to “Continuous dynamic”, it still goes through the wall on low FPS.
now i know there is another method to solve it, and the method is to move the object using “Rigidbody.Velocity = something.”
but the problem is that when you’re using Velocity, it disables the gravity on the object, and he just start floating when i’m moving down a mountain in my terrain.

what i’m trying to ask is there any way to move an object at a constant speed, without disabling its gravity(using velocity), and without teleporting it a little bit every frame (using transform.translate)
so it will be able to collide with the walls, even on very low FPS?

Thanks.

2

Two methods you can use to get past this.

Method 1

Rigidbody rb;
void Start () => rb = GetComponent<Rigidbody>();
void Update () => rb.MovePosition(transform.position + transform.forward * Time.deltaTime);

Method 2

void Update () => transform.position = Vector3.Lerp (transform.position, transform.position + transform.forward * Time.deltaTime, 1f);