[Stoku]

Hello,
I got bored so I decided to write this short "tutorial" about "while" loop.

The while loop will be repeating as long as it's condition is false (eg. 1 > 0 = true, stop; 1 < 0 = false, continue executing).

The main syntax of the while loop is:

Code: (squirrel) [Select]

while ( condition )
{
code to execute
}

And below are some samples of use:

- Setting all players health to 100:

Code: (squirrel) [Select]

local x = 0;

while ( x < GetPlayers() )
{
local plr = FindPlayer( x );

if ( plr )
{
plr.Health = 100;
}
x++;
}
- Teleporting all players somewhere:

Code: (squirrel) [Select]

local x = 0;

while ( x < GetPlayers() )
{
local plr = FindPlayer( x );

if ( plr )
{
plr.Pos = Vector( 0, 0, 0 );
}
x++;
}
- Fixing every vehicle on the server:

Code: (squirrel) [Select]

local x = 0;

while ( x < GetVehicleCount() )
{
local veh = FindVehicle( x );

if ( veh )
{
veh.Fix();
}
x++;
}
Good luck with looping .

PS. Samples weren't tested, so if there's something wrong, please inform me.

[Thijn]

I though vehicle IDs start with 1

[Stoku]

I though vehicle IDs start with 1

Thanks, fixed .

[Force]

I though vehicle IDs start with 1

Thanks, fixed .

Last I checked they start with 0, not 1.

[Stoku]

I though vehicle IDs start with 1

Thanks, fixed .

Last I checked they start with 0, not 1.

Lol, so I changed it again.

[Orpheus]

I though vehicle IDs start with 1

Thanks, fixed .

Last I checked they start with 0, not 1.

Lol, so I changed it again.

even if it HAD started at 1, you may aswell start the loop at 0, it'll just skip past the vehicle pointer and go straight to X++; so it would work even if the vehicle ID's started at 1

[himselfe]

And here's a loop for people who aren't batshit crazy:

Code: (squirrel) [Select]

for (local p, i = 0, count = GetPlayers(); i < count; i++) {
  if (!(p = FindPlayer(i))) continue;
 
  p.Health = 100;
}


[Windlord]

And here's a loop for people who aren't batshit crazy:

Code: (squirrel) [Select]

for (local p, i = 0, count = GetPlayers(); i < count; i++) {
  if (!(p = FindPlayer(i))) continue;
 
  p.Health = 100;
}


Slight problem would be that not all player IDs are populated in sequence if someone in the middle leaves.
A solution is:

Code: (squirrel) [Select]

for (local p, i = 0, c = 0, count = GetPlayers(); c < count; i++) {
  if (!(p = FindPlayer(i))) continue;
 
  p.Health = 100;
  c++;
}


[himselfe]

Slight problem would be that not all player IDs are populated in sequence if someone in the middle leaves.

Good point! A simpler solution would be to use GetMaxPlayers() instead of GetPlayers(), such as:

Code: (squirrel) [Select]

for (local p, i = 0, count = GetMaxPlayers(); i < count; i++) {
  if (!(p = FindPlayer(i))) continue;
 
  p.Health = 100;
}

Although this could be inefficient if it's done lots of times on large servers. A better and more efficient alternative would be to keep an active table of players and use foreach to iterate that table:

Code: (squirrel) [Select]

players <- {};

function onPlayerJoin( player )
{
players.rawset(player.Name,player);
}

function onPlayerPart( player, reason )
{
players.rawdelete(player.Name);
}

function HealAllPlayers()
{
foreach(player in players) {
player.Health = 100;
}
}


[Dominik]

Nice. I try it...