Comparing World Positions

Questions & Answers
1

So I’ve been trying to find the closest node to a certain object:

	void FindClosestNode (Transform comparitive) {

		float closeDistance = Mathf.Infinity;
		GameObject closestNode = null;
		GameObject[] gNodes = GameObject.FindGameObjectsWithTag("Waypoint");

		foreach(GameObject node in gNodes){
			float dis = (node.transform.position - comparitive.position).sqrMagnitude;
			if(dis < closeDistance){
				closestNode = node;
				closeDistance = dis;
			}
		}

		end = closestNode.transform;
	}

So all looks fine and dandy; I’ve used this code for countless other scripts trying to find the closest… something or other. But, for some reason this code does not work. No matter where I put the comparative, it always chooses this same node. Now I checked the Transforms on each object and I noticed that the comparative was in world space (it’s position was roughly (-12,21,-52)) and for some reason the node (in which the comparative was quite literally standing on) was (-0.0001506805, 0.0002708435, 14.63168) which made absolutely no sense to me since the node was more or less inside the comparative. I realized that the node was a child of another object at (0,0,0). So I figured it must be working in local space. So I tried changing the distance code from:

float dis = (node.transform.position - comparitive.position).sqrMagnitude;

To:

float dis = (node.transform.TransformPoint(node.transform.position) - comparitive.position).sqrMagnitude;

Using transform.TransformPoint to convert it to world space. But the code still doesn’t work. Anything that looks wrong?

2

Transform.position is always world space. Transform.localPosition is relative to the parent. If you use transform.position you don’t need to use TransformPoint or anything else.