[CalvinC]

With the first one, start off by setting a repeating timer under OnGameModeInit, using:
https://sampwiki.blast.hk/wiki/SetTimer

Код:

SetTimer("1SecTimer", 1000, true);
/*
1SecTimer - The public we're gonna call
1000 - The time it will take before we call the public in milliseconds, we'll set it to 1 second
true - Should it repeat, in this case we want to check his health each second, so true, it should repeat
*/

Then in the public, loop through all players
https://sampwiki.blast.hk/wiki/Keywords:Statements#for

Код:

for(new i = 0; i < MAX_PLAYERS; i ++) // Calls the code underneath 500 times as "i"
{
    if(IsPlayerConnected(i)) // Check if that number is connected
    {

    }
}

Or just use foreach

And check if their health is below etc. 50
https://sampwiki.blast.hk/wiki/GetPlayerHealth

Код:

new
    Float: HP // Declare "HP" as a float (a number that can hold decimals, like 21.1582)
;
GetPlayerHealth(i, HP); // Stores the players health in the HP float
if(HP < 50) // If the HP float is set to something lower than 50
{

}

And then set their drunk level.
https://sampwiki.blast.hk/wiki/SetPlayerDrunkLevel

Код:

if(HP < 50)
{
    SetPlayerDrunkLevel(i, 2000);
}