koobas.hobune.stream
Object reference not set to an instance of an object: Can't seem to work things out
I can't seem to figure out what I am doing wrong with this script. I can launch my game but whenever i am colliding with a pickup Unity closes the game and tells me there is a NullReferenceExeption going on. Been looking around for some time but can't seem to find an answer.
Here is the script ( Javascript ):
// This script is supposed to find the GUI texture in my GUIpoint GameObject?
// ( I think GUItextures are gameobjects? )
static public var onPoint : boolean = false;
static var DetectPoint : GameObject;
DetectPoint = GameObject.Find("GUIpoint");
static function hideTexture(){
if(onPoint == true){
DetectPoint.guiTexture.color.a = 255;
yield WaitForSeconds (1);
DetectPoint.guiTexture.color.a = 0;
onPoint = false;
}
}
EDIT:
The error is in the script that calls the coroutine:
GetComponent(PointGet).StartCoroutine("hideTexure");
Many thanks in advance :)
When Unity detects an error, it usually says which line the error occurs at. Can you indicate in your post which line the NullReferenceExpcetion is being reported?
If the error is being reported in the line which reads:
GetComponent(PointGet).StartCoroutine("hideTexture");
This tells me that either:
There is no such data type (Script) called "PointGet")
The object in which GetComponent() is being called doesn't have a component of type PointGet attached to it and hence returns "null". Since it returns null, the code is equivalent to:
null.startCoroutine("hideTexture");
Which would generate the runtime error you describe.
The script where the code is on is called "PointGet" and is attached to my gameobject which is a GUI texture. That is mostly why I simply can't find a reason for this null that is happening.
Solved this error by replacing this: ( EDIT: It didn't solve anything )
GetComponent(PointGet).StartCoroutine("hideTexure");
With this:
GetComponent(PointGet);
PointGet.hideTexture();
2nd Edit:
I have replaced GetComponent(PointGet);
With:
var PointGetScript: PointGet = GetComponent(PointGet);
No errors, but it doesn't start my hideTexture function as intended, Oh and it does display the guitexture when i delete the yield WaitForSeconds (1);in my PointGet script. I think I am triggering the coroutine wrong.
Edit #3:
The script where i am triggering the coroutine from looks like this:
if(shipTrigCollision.gameObject.tag == "TrianglePickup"){
PointGet.onPoint = true; // Sets the statement as true in our pointget script
var PointGetScript: PointGet = GetComponent(PointGet);
PointGetScript.hideTexture();
audio.PlayOneShot(trianglePickupCollideSound);
Destroy(shipTrigCollision.gameObject); // Destroys the game object we collided with last
}
And the script where the coroutine is on looks like this:
static public var onPoint : boolean = false;
static var DetectPoint : GameObject;
DetectPoint = GameObject.Find("GUIpoint");
DetectPoint.guiTexture.enabled = false; // Disables guiTexture
static public function hideTexture(){
if(onPoint == true){
DetectPoint.guiTexture.enabled = true;
yield WaitForSeconds (1);
DetectPoint.guiTexture.enabled = false;
onPoint = false;
}
}
Still very confused where the error is.
That line GetComponent(PointGet) is doing nothing at all. You already have a variable called PointGet, but GetComponent is called for a class not a variable - it's confusing because I bet your script is also called PointGet right?
Yeah, I noticed it didn't do very much :p Yes, my script is called PointGet, Isn't it that script I am refering to?
I think we need to see a bit more code to give it some context :) Can you edit the answer above or the question and post the code for both of the routines. You know how it is, it'll be something you missed in a bit you think is dead right, or something (that's what always happens to me, anyway!)
