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Thread: error while creating a "clear" method

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    Default error while creating a "clear" method

    Hello!
    I was following this(a video on youtube called "Game Programming: Episode 10- Clearing the Screen" by "TheChernoProject ) tutorial on how to make a game when an error occurred.

    in my clear method in the screen class, it shows an error in this line;

    pixels[i] = 0;

    the "i" says that it cannot be resolved to a variable. why is this?

    i have checked and i have the same coda as "Cherno" has in the video, but i still get this error.

    --- Update ---

    This video;

    https://www.youtube.com/watch?v=Gt6WvnQu7R8


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    Default Re: error while creating a "clear" method

    Can you post an SSCCE demonstrating what you're trying?
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    Default Re: error while creating a "clear" method

    so basically i have followed a series on how to make a game. in a game you have to render to a screen and you must clear the screen before every new render. I have come thus far that i have made a method that will clear the screen, but i get an error in that clear method. The error concerns an "i". I can use that "i" in the lines of code just above, butt not in this line.

    this is my clear method;

    public void clear(){
    for (int i = 0; i < pixels.length; i++);
    pixels [ i ] = 0;
    }

    its the "i" in the square brackets after calling pixels.

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    Default Re: error while creating a "clear" method

    The semi-colon at the end of the 'for' statement ends the 'for' clause. The 'i' in the next line is now an orphan, having never been declared. Remove the semi-colon at the end of the 'for' statement.

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    Default Re: error while creating a "clear" method

    Take a look at your for loop. Notice how it ends in a semicolon, which means that you do nothing in each iteration of the loop, and then exit that loop. After you exit the loop, you try to set pixels[i], but since you're outside the loop, i doesn't exist anymore! I think you want this instead:

    public void clear(){
       for (int i = 0; i < pixels.length; i++){
          pixels [ i ] = 0;&#65279;
       }
    }

    Watch out for similar problems with if statements!
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    Default Re: error while creating a "clear" method

    Whoops, Tanks!
    now i get an error while debugging the code, it reads;

    Save Problems

    Save could not be completed. Try File > Save As... if the problem persists.

    Reason:
    some characters cannot be mapped using "Cp1252" character encoding.
    Either change the encoding or remove the characters which are not supported by "Cp1252" character encoding.


    (English is not my main language)
    What could cause this?

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    Default Re: error while creating a "clear" method

    Again, you need to post an SSCCE that demonstrates the error. Do you really get that error while running a debugger? What debugger are you using? What editor? Have you tried following the advice in the error itself?
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    Default Re: error while creating a "clear" method

    (English is not my main language)
    What could cause this?
    You were born in a non-English speaking country.

    Sorry, couldn't resist.

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    Default Re: error while creating a "clear" method

    Fixed it, i just start from the beginning and copied the code from the old files and it worked like a charm!
    Thanks for the help!

    Btw I an using Eclipse as my ide.

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