[Tutorial] How to make a loop through connected players

[Tutorial] How to make a loop through connected players - Printable Version

+- SA-MP Forums Archive (https://sampforum.blast.hk)
+-- Forum: SA-MP Scripting and Plugins (https://sampforum.blast.hk/forumdisplay.php?fid=8)
+--- Forum: Scripting Help (https://sampforum.blast.hk/forumdisplay.php?fid=12)
+---- Forum: Tutorials (https://sampforum.blast.hk/forumdisplay.php?fid=70)
+---- Thread: [Tutorial] How to make a loop through connected players (/showthread.php?tid=406296)

How to make a loop through connected players - badnum23 - 09.01.2013

...and without this check IsPlayerConnected(playerid). I want to tell you how to make loops a little bit faster.

The base
First of all. Create a two variables and one define.

Code:

new pList[MAX_PLAYERS], pListSize;
#define pLoop(%0) for (new %0 = 0; %0 < pListSize; %0++)

And then add two this functions:

Code:

pListPush(playerid)
{
    pList[pListSize] = playerid;
    pListSize++;
}

pListPop(playerid)
{
    new i,j;
    for (i = 0; i < pListSize; i++)
        if (playerid == pList[i]) {
            j = i;
            break;
        }
    for (i = j; i < pListSize-1; i++)
        pList[i] = pList[i+1];
    pListSize--;
}

Ok. Next step is to add some code to OnPlayerConnect and OnPlayerDisconnect publics.

Code:

public OnPlayerConnect(playerid)
{
    pListPush(playerid);
    // your code
    return 1;
}

public OnPlayerDisconnect(playerid)
{
    // your code
    pListPop(playerid);
    return 1;
}

As you can see pListPush added in the start of the public and pListPop in the end.

How to use?
Simply. For example you have some loop, something like this:

Code:

for (new i = 0; i < MAX_PLAYERS; i++)
{
    if (IsPlayerConnected(i))
    {
        ....
    }
}

You should make it looks like this:

Code:

new i;
pLoop(j)
{
    i = pList[j];
    // some of your old code...
}

One more example

Code:

for (new i = 0; i < MAX_PLAYERS; i++)
    if (IsPlayerConnected(i))
      RemovePlayerFromVehicle(i);

and...

Code:

pLoop(i)
    RemovePlayerFromVehicle(pList[i]);

I hope you will use it in your gamemode. Just imagine how faster would work GodFather based gamemodes, if you replaced all the loops, lol.

Re: How to make a loop through connected players - FUNExtreme - 09.01.2013

Or simply: foreach

Re: How to make a loop through connected players - badnum23 - 09.01.2013

But if you don't use Y_Less includes you can't use foreach.

Re: How to make a loop through connected players - FUNExtreme - 09.01.2013

EDIT: My brains are having a little herp derp because of all the studying

Re: How to make a loop through connected players - badnum23 - 09.01.2013

2 1 3 4 0
delete 1
2 (1) 3 4 0
2 3 3 4 0
2 3 4 4 0
2 3 4 0 0
and pListSize--; so final array is
2 3 4 0

So you should not use -1 instead of +1

FUNExtreme, it's normal. Exams, exams everywhere and every fucking winter

Re: How to make a loop through connected players - mastermax7777 - 09.01.2013

badnum23 sexy beast.. No, just use for(new i=0;i<500;i++){ What's the problem?};

Re: How to make a loop through connected players - ReneG - 10.01.2013

Look in the foreach source, it's the same concept you've displayed in this tutorial. You also don't need YSI for foreach to work.

Re: How to make a loop through connected players - [HK]Ryder[AN] - 10.01.2013

this is a snippet, not a tutorial. you didn't explain the code. it is a copy-paste script

Re: How to make a loop through connected players - badnum23 - 10.01.2013

[HK]Ryder[AN], I can explain to you anything, but I think you've already know it all. I don't have good spelling skills, so I can't explain the work of all the system good.
VincentDunn, ok.
mastermax7777, maybe I should use for (new i = 0; i < 50000000; i++) {What's the problem?}. And it doesn't matter there is only 3 players on the server