Can't change car color

Hi guys
Actually i´m working on a project (realtime car)
and i´v exported my car from blender to Unity . The problem i met is, it´s not possible
to change the color using C# (Unity does not recongnize my object) with this simple code :

Code (csharp):

1.  
2. using UnityEngine;
3. using UnityEngine;
4. using UnityEditor;
5. using System.Collections;
6.  
7. public class NewBehaviourScript : MonoBehaviour {
8.  
9.     // Use this for initialization
10.     void Start () {
11.  
12.     }
13.  
14.     // Update is called once per frame
15.     void Update ()
16.  
17.  
18.     {
19.         if (Input.GetKeyDown (KeyCode.G))
20.         {
21.             gameObject.renderer.material.color = Color.green;
22.        }
23.     }
24. }
25.  

 

Select the gameObject that actually has the renderer component on it.
Next time be more specific with your thread title, and please exclude useless polls.
Thanks in Advance c:

 

sorry it´s my first time to use that forum

 

It´s my first time to use Untiy and i´m still learning how to programm could u help me more?
And sorry it´s also my first time to use that forum

 

The code you posted will only affect the renderer of the gameObject that the script is located on, and from your screenshot of the hierarchy, it's impossible to see if this is the case.

 

Alright . But it does not work when it comes for rendering

 

OK, what we are talking about is that a game object has a renderer (or doesnt have a renderer). So if you had a cube, and you did this:

Code (csharp):

1.  
2. renderer.material.color = Color.red;
3.  

The cube would turn red. If you had multiple cubes parented to that cube, only the one on the lowest level would turn. (also, if it were parented, it would only turn red, and not the ones below it)

Also, if you had an empty game object (or one without a renderer, like a camera) it would just give you an error, since renderer does not exist.

Now, what you need to do, is to search through your hierarchy and change all the ones that you need changed. Consider:

Code (csharp):

1.  
2. using UnityEngine;
3. using UnityEditor;
4. using System.Collections;
5.  
6. public class NewBehaviourScript : MonoBehaviour {
7.     Color[] colors = new Color[]{Color.green, Color.red, Color.blue, Color.white, Color.black};
8.     int index = 0;
9.  
10.     void Update(){
11.         if (Input.GetKeyDown (KeyCode.G)){
12.             SetColor(colors[index++]);
13.             index = index % colors.Length;
14.         }
15.     }
16.  
17.     void SetColor(Color color){
18.         Renderer[] rends = (Renderer[])transform.root.gameObject.GetComponentsInChildren<Renderer> ();
19.         foreach (Renderer rend in rends) {
20.             foreach(Material mat in renderer.materials){
21.                 mat.color = color;
22.             }
23.         }
24.     }
25. }
26.  

See how I go through each object in the root, and find all of the renderers, then go through each material of each renderer and set all the colors to the new color.

I also added a little cycle in there so that every time you press the G key, it changes color.

 

i´m so thankful . It were exactly my problem . I tried to add an empty object game and i´ve got that error .
thx