Why am I getting this error?

Unity Engine
1

I have a script that’s supposed to change the XOffsset in my camera script. Here’s the code…

var aimX: float = 0.7;
var normalX: float = 0.8;
private var camera: Camera;
function Start(){
     chMotor = GetComponent(CharacterMotor);
     var ch:Camera = GetComponent(Camera);
}
function Update(){
     var cameraX = normalX;
     if (Input.GetButton("Aim")){
         cameraX = aimX;
      }
      camera.MouseOrbitOTS.XOffest = cameraX;
}

But when I go into play mode, I get this error…

NullReferenceException: Object reference not set to an instance of an object
Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.String cacheKeyName, System.Type[ ] cacheKeyTypes, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.Object[ ] args, System.String cacheKeyName, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)

Why am I getting this error? Its supposed to change the XOffset in my custom mouse orbit script from 0.8 to 0.7. If you have any questions, just ask.

2

You didn’t define the camera variable anywhere, so it’s null. You also declared a “ch” variable in Start, but then do nothing with it.

–Eric

3

In line 3 you created a field called camera of type Camera. You never assigned it so it is null. Also in like 6 you created a local variable and assigned it the component of Camera, the issue is since you created the variable ch in a method it has local scope so it gets destroyed after Start() {} completes.

So what I think you need to do is fix line 6 to
camera = GetComponent(Camera);

4
  1. You never declare variable “chMotor”, you only assign it.
  2. You never assign variable “camera”, you only declare it.
  3. MouseOrbitOTS isn’t a member of Camera.

SOLUTIONS

  1. var chMotor = GetComponent(CharacterMotor)
  2. In your start method, replace “ch” with “camera”
  3. No idea.