MAX_PLAYERS - Printable Version

MAX_PLAYERS - Printable Version

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+--- Thread: MAX_PLAYERS (/showthread.php?tid=405907)

MAX_PLAYERS - micol - 08.01.2013

Hi, it's me again. ;p
I have another question(like usually).
When I have in my GM something like this:

Код:

#undef MAX_PLAYERS
#define MAX_PLAYERS NUMBER_OF_MY_SLOTS

and my question is simple.
How I must use this?
like:

Код:

arena[playerid] == true

Код:

arena[MAX_PLAYERS] == true

Код:

arena[NUMBER_OF_MY_SLOTS] == true

Greetings, micol.

Re: MAX_PLAYERS - Babul - 08.01.2013

playerid is a default variable in most callbacks which need one players' id to proceed.
if you ever try to access a variable with [MAX_PLAYERS], you will get no warning/error at compile time, but the script will crash, due to an "out of bounds error".
hence each array starts at an index of 0 - assuming 80 MAX_PLAYERS, the 80'th element gets assigned [79].
when declaring an array with 80 slots, is IS required to use the size of 80.
here is a little example:

Код:

new Test[MAX_PLAYERS]; //array ranging from 0 upto MAX_PLAYERS-1 (79), is 80 cells together.

later, in a function/callback USING playerid, like:

Код:

public OnPlayerUpdate(playerid)
{
	new Test[playerid]=GetTickCount();//writes the actual timestamp into the playerid's cell.
	return 1;
}

here a loop in a function, NOT using playerid, so it needs to be created first:

Код:

stock Timestamps()
{
	for(new playerid=0;playerid<MAX_PLAYERS)
	{
		Test[playerid]=0;//delete timestamp for each player
	}
	return 1;
}

Re: MAX_PLAYERS - micol - 08.01.2013

Thanks for quick answer.

I'm finally know this. : D

Greetings, micol.

@EDIT

And another edit from my side. : c

Can you tell me whether I can write code like this:

Код:

new arena[2][MAX_PLAYERS]

or how ?

This means something like this

Код:

arena[0][playerid] == 1
arena[1][playerid] == 1

Re: MAX_PLAYERS - u3ber - 09.01.2013

Quote:

Originally Posted by micol

How I must use this?
like:

Код:

arena[playerid] == true

Код:

arena[MAX_PLAYERS] == true

Код:

arena[NUMBER_OF_MY_SLOTS] == true

not sure what Babul hasn't mentioned, but MAX_PLAYERS is just a number. So it doesn't really matter in the above ^. But be weary! #defines are used (and should be used) when wanting to make multiple references towards some value. it becomes a compile-time constant meaning before actual compilation (preprocessing) all occurrences of the identifier are replaced with a constant value. hi, click me.

Quote:

Originally Posted by miloc

Can you tell me whether I can write code like this:

Код:

new arena[2][MAX_PLAYERS]

or how ?

This means something like this

Код:

arena[0][playerid] == 1
arena[1][playerid] == 1

yes...