How to calculate speed & distance on a sphere?

Questions & Answers
1

Hello,

So I am doing this game where the characters runs forever on a sphere Object.
I want to calculate how manny feets & miles he travels.
I found out that 1 foot equals 0.17 degrees on the eurlangles.x of the sphere.

I tried :

    float rota = transform.eulerAngles.x;
    Debug.Log(rota);
    if(rota % 0.17<=0.1f)
    {
        feet++;
    }

It kind of works, the problem is that it’s on Update and it’s doing it when it’s not supposed to, or too often.

I am looking for a way to count 1 feet each time the sphere turns 0.17 degrees.

Any ideas?

2

The problem probably occurs because you calculate distance based on rotation and not the actual distance traveled by sphere. What if sphere jumps for a frame or two? It would mess numbers.
I’d use this

private float Dist=0f;
private Vector3 PrevPosition;

void Start(){
StartPosition=transform.Position;
}

void Update(){
Dist+=Vector3.Distance(transform.Position,PrevPosition);
PrevPosition=transform.Position
}

Now this way you would have exact amount of distance travelled by your sphere.
Another idea to make it your way is to use FixedUpdate or LateUpdate instead of Update.