Scope of variables in PAWN? - Printable Version

Scope of variables in PAWN? - Printable Version

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Scope of variables in PAWN? - T0pAz - 28.12.2011

Does PAWN has variables scope? For example Local Variables and Global Variables.

Re: Scope of variables in PAWN? - CaHbKo - 28.12.2011

Yes.

pawn Код:

new global_var;

function()
{
    new local_var;
    if(true)
    {
        new even_more_local_var;
    }
}

Re: Scope of variables in PAWN? - randomkid88 - 28.12.2011

Yes. Variables declared outside of a callback are considered Global (all functions/callbacks can access them). Anything declared inside a function is local, and only usable by that function.

Re: Scope of variables in PAWN? - T0pAz - 28.12.2011

What is it's memory allocation? For example if I do

pawn Код:

//At Top
new A;

//At OnGameModeInit CB
A = 2;

//At OnPlayerSpawn CB
print(A); // Is the variable's A value still 2?

Edit: When will the memory get destroyed?

Re: Scope of variables in PAWN? - Calgon - 28.12.2011

The value will remain the same regardless of which scope you change it in, as long as it's a global variable.

pawn Код:

new var;

public OnGameModeInit() { 
   var = 2;
}

//var is always 2 unless changed now

Re: Scope of variables in PAWN? - Tannz0rz - 28.12.2011

Quote:

Originally Posted by T0pAz

What is it's memory allocation? For example if I do

pawn Код:

//At Top
new A;

//At OnGameModeInit CB
A = 2;

//At OnPlayerSpawn CB
print(A); // Is the variable's A value still 2?

Edit: When will the memory get destroyed?

I don't know for sure, but I'd imagine when the program exits.

Re: Scope of variables in PAWN? - T0pAz - 28.12.2011

Quote:

Originally Posted by Calgon

The value will remain the same regardless of which scope you change it in, as long as it's a global variable.

pawn Код:

new var;

public OnGameModeInit() { 
   var = 2;
}

//var is always 2 unless changed now

Last question. Is there a way to know the memory address of a specific variable? Like using pointers or anything.

Re: Scope of variables in PAWN? - Calgon - 28.12.2011

Probably via amx_GetAddr and amx_GetString, in C++ with the Pawn/SA-MP libraries.

Re: Scope of variables in PAWN? - T0pAz - 28.12.2011

Quote:

Originally Posted by Calgon

Probably via amx_GetAddr and amx_GetString, in C++ with the Pawn/SA-MP libraries.

Anyway to use it on PAWN?

Edit: I need it to prevent hacking.

Re: Scope of variables in PAWN? - Ash. - 28.12.2011

Quote:

Originally Posted by T0pAz

Anyway to use it on PAWN?

Edit: I need it to prevent hacking.

Nope.

+ How on earth are you planning on doing that just by getting the memory addresses?