GameObject SetPosition

Questions & Answers
1

Hi guys

I’m trying to do something relatively simple.

  • I’d like to cache/log/create a variable from the cameras Transfrom (location/rotation/scale) on Awake or Start.
  • Then the user can move around the scene all they want but if the user hits the key C, the camera returns to its position at start/awake.

I’ve tried various things revolving around this

using UnityEngine;
using System.Collections;

public class CameraReset : MonoBehaviour {

    private Transform cameraOrigin;


	// Use this for initialization
	void Start () {
        cameraOrigin = gameObject.transform;
	}
	
	// Update is called once per frame
	void Update () {
	
            if (Input.GetKeyDown(KeyCode.C)) //move camera from wherever it is in the scene back to original position
            {
                gameObject.transform = cameraOrigin;
            }
	}
}

but get compile errors.

Help would be greatly appreciated.

2

Even if the compiler errors were fixed, you have a conceptual problem here. The transform is stored by reference. That is, ‘cameraOrigin’ will refer to the current transform, not a snapshot of the position at the start. Vector3 variables are stored by value, so you want to do something like this:

using UnityEngine;
using System.Collections;

public class CameraReset : MonoBehaviour {
	
	private Vector3 cameraOrigin;
	
	void Start () {
		cameraOrigin = transform.position;
	}
	
	void Update () {
		
		if (Input.GetKeyDown(KeyCode.C)) //move camera from wherever it is in the scene back to original position
		{
			transform.position = cameraOrigin;
		}
	}
}
3

You can’t assign to the transform of a game object. It is read only. What you can do is save the position, rotation and scaling of the transform and then restore those.

Give it a try. If you don’t come up with it I will post some code.

4

try this(should point ya in the right direction.):

This script has to be put on main camera to work this way.

using UnityEngine;
using System;
using System.Collections;

public class CameraReset : MonoBehaviour {

	private Vector3 cameraOrigin;
	private GameObject thisCamera;
	private Vector3 cameraRotation;
	
	// Use this for initialization
	void Start () {

		thisCamera = this.gameObject;
		cameraOrigin = thisCamera.transform.position;
        cameraRotation = thisCamera.transform.eulerAngles;
	}
	
	// Update is called once per frame
	void Update () {
		
		if (Input.GetKeyDown(KeyCode.C)) //move camera from wherever it is in the scene back to original position
		{
			thisCamera.transform.position = cameraOrigin;
            thisCamera.transform.eulerAngles = cameraRotation;
		}
	}
}