How to simply print a variable on screen?

Hi everyone!
This is my first post here, but I already started to use Unity some months ago, and posted something in UnityAnswers (the F-Zero like magnetic vehicle issue).

Currently I'm working on a simple kart game, something like Mario Kart, and topics in this forum are really helping me.

Now, my problem of the day:
I need to print the "rigidbody.velocity.magnitude" variable on the screen, in order to know its amount and then know how to modify other values on the base of that. I think the better solution is using the GUI sistem, but how can I do it?
Thank you!

 

Code (csharp):

1. function OnGUI()
2. {
3.   GUI.Label(Rect(0,0,100,100),variableName)
4. }

That should print the variable "variableName" in the upper left corner of the screen.[/code]

 

.. or, I tend to use this a lot to debug stuff:-

print("The variable is :"+variableName);

...this prints the variable's value to the bottom of the editor window, and to the console/log, not to screen, but is very handy.

 

Mirage's solution is correct, although there's a slight gotcha in that GUI.label expects a string, so if you're trying to display a float you'll need to do something like this :

Code (csharp):

1. function OnGUI()
2. {
3.   GUI.Label(Rect(0,0,100,100), rigidbody.velocity.magnitude.ToString());
4. }

 

That's perfect, thanks everyone!

I found the RobbieDingo's solution more handy: I completely forgot that I could print variables directly on the debug menu!

Well, moving on, now adjusting my bad kart settings...

 

Mirage's solution almost worked for me, but i keep getting an error where it says GUI.Label(Rect(
with the problem being that i can't use Rect right there. anyone know how to fix that?

 

Use GUILayout.Label instead.

Better yet, don't resurrect decade old threads. Check out the new UI tutorials, much more useful long term.

 

If you just want to see what a private variable is doing, you can just set the inspector to debug mode btw. If it's a variable decalred inside a method, then debog.log will do.

 

Mind posting the actual error message, not your interpretation of it?

 

idc that this is a decade old thread but I keep getting the error message "Non-invocable member: "Rect" cannot be used like a method." any help.

 

The code posted was in Unity Script. In C# you need to put "new" in front of rect.

 

Error CS1955 The uncalled member "Rect" cannot be used as a method.

 

Don't necro-post to a 10-year-old thread for something completely irrelevant.

Make your own fresh post. It's free.

When you do, keep this in mind:

Please use code tags: https://forum.unity.com/threads/using-code-tags-properly.143875/

How to report problems productively in the Unity3D forums:

http://plbm.com/?p=220

Help us to help you.

 

Technically this isn't irrelevant, if you try to use the UnityScript code posted in 2010 into a C# script, that is the error you'd get, so I assume that's what djjag did (after finding this thread by googling for something similar.)

Of course, had djjag bothered to actually read the thread, they'd have seen the solution to their error in the comment immediately before theirs.

 

You got me there...

I wish Unity would lock threads at the one-month mark, or after no activity for a month. It's so easy to create a fresh post and then just link the thread that Google finds.

I wish there was also a way to permanently prevent UnityScript results ever being returned by Google, unless you actually include the term "javascript" or "unityscript" in your search because you're supporting old software...

If wishes were fishes...

OP: look up any new tutorial on the Unity UI system. Software moves a lot in 10 years.

 

A month might be a little bit too quick for an auto-lock, but yeah I definitely wish there was an auto-lock of some kind in place.