7 replies to this topic

[Big J]

This is something I came up with while implementing mouse_wheel_down() and mouse_wheel_up() for Game Maker 7 in this topic.

/*
    tuvaz_check()
    by Big J
    simplified by torigara
    This script will throw an error
    if "Treat uninitialized variables as zero"
    is enabled in Global Game Settings.
    Call it once at the beginning of the game.
*/
if (variable_global_exists(""))
{
    show_error("Uninitialized variables are treated as zero! "
    + "Uncheck the box for it in Global Game Settings --> Errors. "
    + "This is worse than division by zero.", true);
}

Old overcomplicated script:

Spoiler

/*
    tuvaz_check()
    by Big J
    
    This script will throw an error
    if "Treat uninitialized variables as zero"
    is enabled in Global Game Settings.
    Call it once at the beginning of the game.
    The script uses random, but preserves the state.
    This ensures that the script has no impact on
    the normal random outcome of the game.
*/
var seed;
seed = random_get_seed(); //store the random state
if (variable_global_exists("TUVAZ" + string(floor(random(100000))))) //check for a random variable name
{
    show_error("Uninitialized variables are treated as zero! "
    + "Uncheck the box for it in Global Game Settings --> Errors. This is worse than division by zero.", true);
}
random_set_seed(seed); //restore the random state

Feel free to use it with or without giving credit, modify it any way you like, I don't care. Whatever you do, just put an end to "Treat uninitialized variables as zero" AKA "TUVAZ"!

Edited by Big J, 15 December 2011 - 10:47 AM.

[IceMetalPunk]

I approve this message .

-IMP

[torigara]

Can't this be enough:

if (variable_global_exists("")) { /*blah*/ }

Any string that is invalid as a variable name would work.

[Big J]

Yes, you are right. I was assuming that I had to check for a variable with a valid name, I hadn't thought of trying an empty string, good one! This is really just a work-around for a bug feature in Game Maker.

Edited by Big J, 02 November 2011 - 12:15 AM.

[Davve]

This could be useful for rare situations (such as when releasing an open source engine that the user is expected to fiddle around with) and TUVAZ has caused me a lot of pain, so I definitely approve this!

[LukePattinson1]

What's wrong with TUVAZ? I've never had a problem with it.

...

*sarcasm*

[Silver Scratch]

I'll totally try out the script Lol~~!
:Trollface:

[Big J]

I'll totally try out the script Lol~~!

Fixed.