KeyCodes return

Hello, guys. I don't know what a KeyCode return.
It returns a byte or a key (like A, B, C, D, E...)?

 

Welcome.

In C# methods return things. KeyCode however is an enumeration so it doesn't return anything.

 

Thanks :>

Then, can i return a Key that is pressed? A key code or a key byte?

 

Not sure what you're getting at. Do you mean to have your method return it? What do you mean by key byte?
Perhaps you can provide some context to what you're trying to do?

EDIT: After a quick look into UnityEngine.dll the KeyCode enum definition:

Code (csharp):

1. public enum KeyCode

so the elements are of default int type and not byte if that's what you were asking.

 

Hey Larz,

Here is a link to KeyCode in the Unity Manual: http://docs.unity3d.com/ScriptReference/KeyCode.html

You can return a key that is pressed. It is an enum, which means it is basically an array of int values denoted with identifiers.

 

YES!
That's what i was looking for. I'm trying to just assign KeyCodes with byte, but now i see they are integers.
How can i return them? Is there a list of those integers?

 

Enums can be casted to an integer. See the example section here:

https://msdn.microsoft.com/en-us/library/sbbt4032.aspx

Edit: Removed assumption that Unity didn't assign random values to each enum member.

 

But you probably don't need to cast or store the values as int (unless you really do but probably not). For example to have a method that returns value of keybaord button that you want to be "walking forward" button you would have this method return KeyCode type:

Code (csharp):

1. private KeyCode GetForwardKey()
2. {
3.     return KeyCode.UpArrow;
4. }

For list of KeyCode enum elements check the KeyCode documentation.

If you really want to cast to int and need to know the int values of elements before the fact (at runtime you can get the int value of specific element by casting to int as suggested) you have to take a look inside UnityEngine.dll where it is defined to find:

Code (csharp):

1.  

 

Why?

 

Not sure what the question is exactly?
The code is not mine. It's extracted from UnityEngine.dll - it's the actuall definition of KeyCode.

 

Ok, that's so helpful. Thanks to everyone.
But how can i return the Key that is Pressed?

Code (CSharp):

1. void GetPressedKey ()
2.     {
3.         return Input.GetKeyDown (KeyCode);
4.     }

Something like this?

 

To check for specific key like Up Arrow:

Code (CSharp):

1. void GetPressedKey ()
2. {
3.    return Input.GetKeyDown (KeyCode.UpArrow);
4. }

If you don't know what button you are looking for and need something like GetAllButtonsDown then the Input class doesn't seem to provide this functionality: http://docs.unity3d.com/ScriptReference/Input.html

There is property to check if any button is down: http://docs.unity3d.com/ScriptReference/Input-anyKeyDown.html

Otherwise what you would have to do is to have a list of all buttons you want to monitor (all buttons that do anything in your game for example) and then in Update call GetKeyDown in loop for each one of them and react accordingly.

 

There's actually no good way to say "give me the button that was pressed".

Legacy GUI provides this which is as close as you can get and has to be run in OnGUI - http://docs.unity3d.com/ScriptReference/Event-keyCode.html

 

Ok, let me see if i undestand. You guys are saying that i will have to do all the keys?

Like : if (Input.GetKeyDown (KeyCode.W)) { key[119] = true; }

?

 

What exactly is it you're trying to achieve?

 

A system that change variables value when a key is pressed.
I was doing an "if" statement for all the KeyCodes, but i want to do a function for all, like, when the key is pressed, the function get the key pressed and find a variable that have the same value (like a bool called 'key119', and the key pressed is the key 119 [w]), so the variable will be activated/deactivated.

 

So you're trying to flip an index in an array of booleans based on what key is pressed?

You could do something like this, assuming keys is a boolean[] that is initialized to a length of whatever the maximum integer value is contained in KeyCode

Code (csharp):

1.  
2. void OnGUI()
3. {
4.     var e = Event.current;
5.     if (e.isKey)
6.     {
7.         keys[(int)e.keyCode] = true;
8.     }
9. }
10.  

 

What needs to happen to OnGUI () get called?

 

Help...

 

https://startpage.com/do/search?q=unity+ongui

Please use search engines and read documentations before asking on forum

It gets called at least once per frame from what I understand.

 

Ok, i'm sorry Pirs01, that's because i searched and i didn't found it.
So the OnGUI () is, basically, an Update () or FixedUpdate ()?

 

How can i check if the Key is released?

 

Sort of. It is called at least twice per frame, and twice more for every GUI event that occurs. You can check which event is occurring by using Event.current. its a painful way to work, but appears to be the only way to listen for an arbitrary key press.

 

Thanks for everyone who helped me. It's being pretty hard to learn, but thanks so much, guys