Cannot convert 'boolean' to 'somevariable'.

Question

So I've got a problem I'm getting this compiler error in unity saying "Cannot convert 'boolean' to 'Player_Controller'." and I don't know why? I'm trying to create a toggle scripts script that accesses two java scripts in the same object that this script is attached to. One is called "Free_Look" and the other is called "Player_Controller", both are java scripts so I don't have to worry about calling a C# script. Script below. Sorry if the script sucks I'm not a good programmer just trying to learn problem by problem.

 var toggle : boolean = false;
 var script1 : Free_Look;
 var script2 : Player_Controller;
 
 function Start() {
      script2 = GetComponent(Player_Controller).enabled = true;
      rigidbody.useGravity = true;
      script1 = GetComponent(Free_Look).enabled = false;
      Time.timeScale = 1;
 }
 
 function Update() {
      if (Input.GetKeyDown("f")) {
           toggle = !toggle;
 
      if (toggle) {
           print("Toggled ON");
           script1 = GetComponent(Free_Look).enabled = true;
           script2 = GetComponent(Player_Controller).enabled = false;
           rigidbody.useGravity = false;
           Time.timeScale = 0.5;
      }
 
 
      else {
           print("Toggled OFF");
           script2 = GetComponent(Player_Controller).enabled = true;
           rigidbody.useGravity = true;
           Script1 = GetComponent(Free_Look).enabled = false;
           Time.timeScale = 1;
 
      }
 } 
 }

Answer 1

Best Answer

Answer by Benproductions1 · Mar 15, 2014 at 01:24 AM

Since you didn't post what line the error is on, I'll assume it happens on a line like line 6:

 script2 = GetComponent(Player_Controller).enabled = true;

In this line, you are assigning to both script2 and GetComponent(Player_Controller).enabled a value of true, which of type boolean.

However, if we expand the types of each element, we can see a problem:

 Player_Controller = Component->boolean = boolean;

As you can see there is a problem with this: You are assigning a boolean type to a Player_Controller type variable. What you probably expect it to do is assign GetComponent to script2 and then enable it. Simply describing it is already a two step process and the same goes for the code. You cannot do this in one line.

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SHG · Mar 15, 2014 at 01:37 AM 0

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SHG · Mar 15, 2014 at 01:43 AM 0

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Thanks I understand why I got the error now, although how would one go about doing what I'am trying to do in multiple lines?

infinitypbr · Mar 15, 2014 at 01:45 AM 0

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 script2 = GetComponent(Player_Controller);
 script2.enabled = true;

SHG · Mar 15, 2014 at 01:50 AM 0

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Thank you so much! You've really helped me out a lot!

Benproductions1 · Mar 15, 2014 at 01:51 AM 0

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On the first line you get the component and assign it to a variable, while on the second line you disable or enable that component. ie:

 comp = GetComponent(Type);
 comp.enabled = boolean;

In you code you should only ever use GetComponent in either Awake or Start, so you don't have to call it again during update (it's quite a slow function). Then you can simply enable or disable it during Update without using GetComponent.

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Answer 2

Answer by infinitypbr · Mar 15, 2014 at 01:23 AM

Yes, please indent the code -- that would be helpful.

But if I'm not mistaken, the lines like this are incorrect:

 script2 = GetComponent(Player_Controller).enabled = true;

If script2 is a variable holding the Player_Controller script, you should just be able to say script2.enabled = true; once the variable is set. So make two lines -- first set the variable, then enable the script.

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Cannot convert 'boolean' to 'somevariable'.

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