I'm trying to move a simple Object
in Unity but I get the following error message:
cannot modify the return value of unityengine.transform.position because itar is not variable
Here is my code:
using UnityEngine;
using System.Collections;
public class walk : MonoBehaviour {
// Use this for initialization
void Start () {
}
// Update is called once per frame
void Update () {
float movespeed = 0.0f;
movespeed++;
transform.position.x = transform.position.x + movespeed;
}
}
You can't assign the x
value on position
directly as it's a value type returned from a property getter. (See: Cannot modify the return value error c# )
Instead, you need to assign a new Vector3
value:
transform.position = new Vector3(transform.position.x + movespeed, transform.position.y);
Or if you're keeping most of the coordinate values the same, you can use the Translate
method instead to move relatively:
transform.Translate(movespeed, 0, 0)
A slight improvement over Chris' answer:
transform.position = new Vector2(transform.position.x + movespeed * Time.deltaTime, transform.position.y);
Time.deltaTime
the amount of time it's been between your two frames - This multiplication means no matter how fast or slow the player's computer is, the speed will be the same.
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