[EFFx]

PHP Code:

/* Plugin generated by AMXX-Studio */

#include <amxmodx>
#include <pubnite_mod>

#define PLUGIN "New Plug-In"
#define VERSION "1.0"
#define AUTHOR "author"

public plugin_init() {
    register_plugin(PLUGIN, VERSION, AUTHOR)
    
    set_task(2.0, "getValue")
}

public getValue()
{
    new iItemNewID, iItemNewRarity, szItemModelSet[MAX_MODEL_LENGTH]
    pubnite_get_randomitem(iItemNewID, iItemNewRarity, szItemModelSet)
                
    log_amx("iItemNewID: %d", iItemNewID)
    log_amx("iItemNewRarity: %d", iItemNewRarity)
    log_amx("szItemModelSet: %s", szItemModelSet)
} 


So, basically, the first plugin reads an .ini file that gets all avaliable informations about a determined item (it works). Then I registered a native that I can use with another plugin, it's supposed to return a random's item information (the rarity, id and model). But, somehow, the set_param_byref is not doing it's job (for some reason it was working before, but magically, it stopped working). Anyone can tell me what I'm doing wrong or I need to do?

Also, both debug I did is the prove that the native is getting a random's item information, but it's not passing the value through the native.

Output:

L 04/17/2019 - 20:27:34: [PUBNite_CustomItens.amxx] native: 82 4 models/player/leet/leet.mdl
L 04/17/2019 - 20:27:34: [aaa.amxx] iItemNewID: 0
L 04/17/2019 - 20:27:34: [aaa.amxx] iItemNewRarity: 0
L 04/17/2019 - 20:27:34: [aaa.amxx] szItemModelSet: models/player/leet/leet.mdl

[E1_531G]

A simple cell/int are passed by value. Arrays are passed by reference.

A time ago i've seen a thing related to this subject, but i don't remember...
It was something about reference operator: &

Try this, maybe:
pubnite_get_randomitem(&iItemNewID, &iItemNewRarity, szItemModelSet)

We will wait together for someone who knows it better.

edit: ... i've mixed some things ... well, will see

[EFFx]

You're right, after adding the & it worked. I appreciate.

[E1_531G]

Originally Posted by EFFx You're right, after adding the & it worked. I appreciate.

LOL, really? Is it a joke?
If not then i am glad.
My memories about & were like in a fog.

[EFFx]

Yes, it actually worked.

[Bugsy]

Yes, arrays are always passed by reference by default, but 'regular' single-cell variables are passed by value. Adding the & passes them by reference allowing you to modify the 'original' variable that is passed within your function.

Here's a basic demo

PHP Code:


#include <amxmodx>

public plugin_init() 
{
    //Define variable with a value of 10
    new iByRef = 10;
    //Since & is used, the memory address of iByRef is passed, 
    //allowing the function to modify the variable directly.
    TestByRef( iByRef );
    //Print value of iByRef
    server_print( "Val=%d" , iByRef );
    
    
    
    //Define variable with a value of 10
    new iByVal = 10;
    //Since the variable is passed by-value, the function cannot
    //modify its value so we must return the value through the 
    //function.
    server_print( "Val=%d" , TestByVal( iByVal ) );
}

public TestByRef( &i )
{
    i = i * 10;
}

public TestByVal( i )
{
    return i * 10;
} 


[EFFx]

The major difference is that without the & I need to return the value?

[fysiks]

Originally Posted by EFFx The major difference is that without the & I need to return the value?

You can either return a value or populate a byref parameter. If you have multiple outputs from a function, using at least one byref parameter is required.

[Bugsy]

I wouldn't think of it as 'if not byref then make the function return a value', because you can do both. It's just a means to get data into a variable. A common example is when you use get_players(), the players array and count variables (params 1 & 2) are passed by reference and both get data without the function itself returning anything.

Using byref is useful when you need a function to return multiple values, you can either use an array (by reference by default) or pass multiple variables by-reference using &. With this, you can set values in each variable, plus make the function return a value.

[EFFx]

Gotcha, thank you.