Is there a tool to measure a distance in runtime?

Questions & Answers
1

I would give the possibility to the player at any time to measure the distance between two points

2

You could add this line to your script:

Vector3 dist = point2 - point1;
float range = dist.magnitude;
3

Well this is really simple, depending on how you get the point data:

If the points are known its as simple as that:

float range = (EndPoint - StartingPoint).magnitude // EndPoint and StartingPoint are Vector3s.

If dont know the points yet please ask with a comment.

4

You have to Raycast to find the positions in a 3D world. Here is a bit of starter code. Attach it to any game object in the scene. It displays the current distance in the upper left corner. You likely want to add a line renderer to show the line being dragged.

#pragma strict

private var measuring = false;
private var startPoint : Vector3;
private var dist;

function Update() {
	var hit : RaycastHit;
	if (Input.GetMouseButtonDown(0)) {
		if (Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), hit)) {
			measuring = true;
			startPoint = hit.point;
		}
	}
	
	if (measuring && Input.GetMouseButton(0)) {
		if (Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), hit)) {
			dist = Vector3.Distance(startPoint, hit.point);
		}
	}

	if (measuring && Input.GetMouseButtonUp(0)) {
		measuring = false;
		if (Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), hit)) {
			dist = Vector3.Distance(startPoint, hit.point);
			Debug.Log("Final distance = "+dist);
		}
	}
}

function OnGUI() {
	if (measuring) {
		GUI.Label(Rect(50,50,100,50), dist.ToString());
	}
}
5

Hi - I would like to tweak this code so that the user wouldn’t have to click on the object in order to display the distance. (I want to display the distance that a 3d character runs from one part of the screen to the other). The start point will always be 0 but I would like to know what value/parameter to put in instead of ‘hit.point’ in order to determine the real time position of the character. Is this possible ?