[Makaveli93]

Place this on top of your code

pawn Код:

forward Cooldown(playerid);
new bool:UsedChat[MAX_PLAYERS] = false;

Place this on OnPlayerText for example

pawn Код:

if(UsedChat[playerid]) return SendClientMessage(playerid, 0xFFFFFF, "You have used the chat, wait 6 seconds.");
UsedChat[playerid] = true;
SetTimerEx("Cooldown", 6000, false, "i", playerid);

Place this somewhere in your GM/FS

pawn Код:

public Cooldown(playerid)
{
    UsedChat[playerid] = false;
    return 1;
}