object reference not set to an instance of an object. c#

Help.

Code (CSharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class Underwater : MonoBehaviour {
6.  
7.     // Attach this script to main camera
8.     // And Define variable underwaterLevel up
9.     // to your water level or sea level Y-coordinate
10.     public float underwaterLevel = 7;
11.  
12.     // These variable to store
13.     // The scene default fog settings
14.     private bool defaultFog = true;
15.     private Color defaultFogColor;
16.     private float defaultFogDensity;
17.     private Material defaultSkybox;
18.     private float defaultStartDistance;
19.  
20.     void Start () {
21.         // store default fog setting
22.         // we need to restore fog setting
23.         // after we go to surface again
24.         defaultFog = RenderSettings.fog;
25.         defaultFogColor = RenderSettings.fogColor;
26.         defaultFogDensity = RenderSettings.fogDensity;
27.         defaultSkybox = RenderSettings.skybox;
28.         defaultStartDistance = RenderSettings.fogStartDistance;
29.      
30.         // set the background color
31.     }
32.  
33.     void Update () {
34.         // check if we below the sea or water level
35.         if (transform.position.y < underwaterLevel) {
36.             // render new fog with blue color
37.             // Or you can change the color to
38.             // match your water
39.             RenderSettings.fog = true;
40.             RenderSettings.fogColor = new Color(0, 0.4f, 0.7f, 0.6f);
41.             RenderSettings.fogDensity = 0.1f;
42.             RenderSettings.fogStartDistance = 0.0f;
43.          
44.             // add this if you want to add blur effect to your underwater
45.             // but first add Image Effect (Pro) Package to your project
46.             // Add component Image Effect > Blur to Main camera
47.             this.GetComponent<BlurEffect>().enabled = true;
48.         } else {
49.             // revert back to default setting
50.             RenderSettings.fog = defaultFog;
51.             RenderSettings.fogColor = defaultFogColor;
52.             RenderSettings.fogDensity = defaultFogDensity;
53.             RenderSettings.skybox = defaultSkybox;
54.             RenderSettings.fogStartDistance = defaultStartDistance;
55.          
56.             // add this if you want to add blur effect to your underwater
57.             // but first add Image Effect (Pro) Package to your project
58.             // Add component Image Effect > Blur to Main camera
59.             this.GetComponent<BlurEffect>().enabled = false;
60.         }
61.     }
62. }
63.  

 

Can you specify which line is #59? If you're using a pre-made asset most likely you're missing something in the inspector

 

Would be easier with the correct lines in your code. I'd guess you do not have any 'BlurEffect' on your object or the defaultSkyBox is not assigned.

Your code is running every update btw, which is not that great in regards to setting those values every frame.

 

Crayz.

Sorry, I had seen that I uploaded incomplete writings . Now Patarkit as pataisiti or get the effect.

 

How I can fih that?

 

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Underwater : MonoBehaviour {
5.    
6.     // Attach this script to main camera
7.     // And Define variable underwaterLevel up
8.     // to your water level or sea level Y-coordinate
9.     public float underwaterLevel = 7;
10.    
11.     // These variable to store
12.     // The scene default fog settings
13.     private bool defaultFog = true;
14.     private Color defaultFogColor;
15.     private float defaultFogDensity;
16.     private Material defaultSkybox;
17.     private float defaultStartDistance;
18.  
19.     // BlurEffect
20.     private BlurEffect blurEffect;
21.    
22.     void Start () {
23.         // store default fog setting
24.         // we need to restore fog setting
25.         // after we go to surface again
26.         defaultFog = RenderSettings.fog;
27.         defaultFogColor = RenderSettings.fogColor;
28.         defaultFogDensity = RenderSettings.fogDensity;
29.         defaultSkybox = RenderSettings.skybox;
30.         defaultStartDistance = RenderSettings.fogStartDistance;
31.        
32.         // set the background color
33.  
34.         // Retrieve the BlurEffect component
35.         blurEffect = this.GetComponent<BlurEffect>();
36.  
37.         if ( blurEffect == null ) {
38.             Debug.LogError( "This controller doesn't have a BlurEffect component!" );
39.         }
40.     }
41.    
42.     void Update () {
43.         // check if we below the sea or water level
44.         if (transform.position.y < underwaterLevel) {
45.             // render new fog with blue color
46.             // Or you can change the color to
47.             // match your water
48.             RenderSettings.fog = true;
49.             RenderSettings.fogColor = new Color(0, 0.4f, 0.7f, 0.6f);
50.             RenderSettings.fogDensity = 0.1f;
51.             RenderSettings.fogStartDistance = 0.0f;
52.            
53.             // add this if you want to add blur effect to your underwater
54.             // but first add Image Effect (Pro) Package to your project
55.             // Add component Image Effect > Blur to Main camera
56.             if ( blurEffect != null ) {
57.                 blurEffect.enabled = true;
58.             }
59.         }
60.         else {
61.             // revert back to default setting
62.             RenderSettings.fog = defaultFog;
63.             RenderSettings.fogColor = defaultFogColor;
64.             RenderSettings.fogDensity = defaultFogDensity;
65.             RenderSettings.skybox = defaultSkybox;
66.             RenderSettings.fogStartDistance = defaultStartDistance;
67.            
68.             // add this if you want to add blur effect to your underwater
69.             // but first add Image Effect (Pro) Package to your project
70.             // Add component Image Effect > Blur to Main camera
71.             if ( blurEffect != null ) {
72.                 blurEffect.enabled = false;
73.             }
74.         }
75.     }
76. }

 

Debug.LogError( "This controller doesn't have a BlurEffect component!" )
Now what I can do? Maybe I can change effect?

 

You then need a script called 'BlurEffect' on your gameObject, because in your script there's the following piece of code:

Code (CSharp):

1. blurEffect = this.GetComponent<BlurEffect>();
2.  

When there isn't any component of type 'BlueEffect', the variable 'blurEffect' will remain null. That's why the message is shown which @toreau has added to your script.

I assume 'BlurEffect' is the image effect provided by Unity with the standard assets, so it shouldn't be any problem to add the script (most likely requires Unity Pro license in order to work).