[Quantum]

You can make a variable for that, for example, at the top of your script:

pawn Код:

new isworking[MAX_PLAYERS];

Add this to set it to 0 under OnPlayerConnect and OnPlayerDisconnect:

pawn Код:

isworking[playerid] = 0;

You may want to add it under OnPlayerDeath or OnPlayerSpawn too.

Here are the commands:

pawn Код:

if(!strcmp("/work", cmdtext, true))
    {
    if(isworking[playerid] == 1) return SendClientMessage(playerid, COLOR, "You are already working!");
    isworking[playerid] = 1;
    new pvehiclemodel = GetVehicleModel(GetPlayerVehicleID(playerid));
    if (pvehiclemodel == 403 || pvehiclemodel == 514 || pvehiclemodel == 515) {
        new string[100];
        new rand = random(sizeof(TruckMissionRandom));
        CreatePlayerMission(playerid, TruckMissionRandom[rand][UseTrailerCheck], TruckMissionRandom[rand][MissionPay], TruckMissionRandom[rand][loadx],TruckMissionRandom[rand][loady], TruckMissionRandom[rand][loadz], TruckMissionRandom[rand][unloadx],TruckMissionRandom[rand][unloady], TruckMissionRandom[rand][unloadz]);
        format(string, sizeof(string), "%s", TruckMissionRandom[rand][MissionName]);
        SendClientMessage(playerid, 0x00FF00FF, string);
        MissionArrayID[playerid] = rand;
        TextDrawHideForPlayer(playerid, mission[playerid]);
        TextDrawShowForPlayer ( playerid, mission [ playerid ] );
        TextDrawSetString(mission [ playerid ],string);
    }
        else
        {
        }
        return 1;
    }

if(!strcmp("/stopwork", cmdtext, true))
    {
        if(IsPlayerConnected(playerid))
        {
            if(isworking[playerid] == 0) return SendClientMessage(playerid, COLOR, "You are not working!");
            isworking[playerid] = 0;
            CancelPlayersCurrentMission(playerid);
            new string[100];
            format(string, sizeof(string),"To start a mission type /work");
            TextDrawShowForPlayer ( playerid, mission [ playerid ] );
            TextDrawSetString(mission [ playerid ],string);
        }
        return 1;
    }