// MissionText TextDraw setup
    APlayerData[playerid][MissionText] = TextDrawCreate(320.0, 430.0, " "); // Setup the missiontext at the bottom of the screen
    TextDrawAlignment(APlayerData[playerid][MissionText], 2); // Align the missiontext to the center
    TextDrawUseBox(APlayerData[playerid][MissionText], 1); // Set the missiontext to display inside a box
    TextDrawBoxColor(APlayerData[playerid][MissionText], 0x00000066); // Set the box color of the missiontext

TextDrawFont(APlayerData[playerid][MissionText], 2);

i think you r the 1 who havent studied math ... dam kid

// Create an array that holds the vehicleid's for vehicles and trailers at class-selection for all players
new AClassSelectionVehicles[MAX_PLAYERS][2];

// This callback gets called when the player is selecting a class (but hasn't clicked "Spawn" yet)
public OnPlayerRequestClass(playerid, classid)
{
    // Setup local variables
    new LastClass, bool:VehicleSpawned = false;

    // Set the virtual world and interior for class-selection
    SetPlayerVirtualWorld(playerid, 15000 + playerid);
    SetPlayerInterior(playerid, 0);

    // Get the player's current class and set it as LastClass
    LastClass = APlayerData[playerid][PlayerClass];
    // Also check if there is currently a vehicle spawned
    if (AClassSelectionVehicles[playerid][0] == 0)
        VehicleSpawned = false;
    else
        VehicleSpawned = true;

    // Display a short message to inform the player about the class he's about to choose
    switch (classid)
    {
        case 0, 1, 2, 3, 4, 5, 6, 7: // Classes that will be truckdrivers
        {
            // Display the name of the class
            GameTextForPlayer(playerid, TXT_ClassTrucker, 3000, 4);
            // Store the class for the player (truckdriver)
            APlayerData[playerid][PlayerClass] = ClassTruckDriver;
        }
        case 8, 9: // Classes that will be bus-drivers
        {
            // Display the name of the class
            GameTextForPlayer(playerid, TXT_ClassBusDriver, 3000, 4);
            // Store the class for the player (busdriver)
            APlayerData[playerid][PlayerClass] = ClassBusDriver;
        }
        case 10: // Classes that will be Pilot
        {
            // Display the name of the class
            GameTextForPlayer(playerid, TXT_ClassPilot, 3000, 4);
            // Store the class for the player (pilot)
            APlayerData[playerid][PlayerClass] = ClassPilot;
        }
        case 11, 12, 13: // Classes that will be police
        {
            // Display the name of the class
            GameTextForPlayer(playerid, TXT_ClassPolice, 3000, 4);
            // Store the class for the player (police)
            APlayerData[playerid][PlayerClass] = ClassPolice;
        }
        case 14, 15, 16: // Classes that will be mafia
        {
            // Display the name of the class
            GameTextForPlayer(playerid, TXT_ClassMafia, 3000, 4);
            // Store the class for the player (mafia)
            APlayerData[playerid][PlayerClass] = ClassMafia;
        }
        case 17, 18: // Classes that will be courier
        {
            // Display the name of the class
            GameTextForPlayer(playerid, TXT_ClassCourier, 3000, 4);
            // Store the class for the player (courier)
            APlayerData[playerid][PlayerClass] = ClassCourier;
        }
        case 19: // Classes that will be assistance
        {
            // Display the name of the class
            GameTextForPlayer(playerid, TXT_ClassAssistance, 3000, 4);
            // Store the class for the player (assistance)
            APlayerData[playerid][PlayerClass] = ClassAssistance;
        }
        case 20, 21, 22: // Classes that will be roadworker
        {
            // Display the name of the class
            GameTextForPlayer(playerid, TXT_ClassRoadWorker, 3000, 4);
            // Store the class for the player (roadworker)
            APlayerData[playerid][PlayerClass] = ClassRoadWorker;
        }
    }

    // If the LastClass isn't the same as the current class, delete the current class-selection vehicles
    if (APlayerData[playerid][PlayerClass] != LastClass)
    {
        // Delete both class-selection vehicles if they exist
        for (new i; i < 2; i++)
        {
            if (AClassSelectionVehicles[playerid][i] != 0)
            {
                DestroyVehicle(AClassSelectionVehicles[playerid][i]);
                AClassSelectionVehicles[playerid][i] = 0;
            }
        }
    }

    // Determine at which coordinates the player, his camera and a few vehicles should be placed, based on the chosen class
    switch (APlayerData[playerid][PlayerClass])
    {
        case ClassTruckDriver:
        {
            // Create a Roadtrain truck and a trailer for class-selection, and put the player inside to make them appear
            if ((APlayerData[playerid][PlayerClass] != LastClass) || (VehicleSpawned == false))
            {
                AClassSelectionVehicles[playerid][0] = Vehicle_CreateCS(playerid, 515, 1457.7, 1005.1, 11.8, 131.0, 1, 2);
                AClassSelectionVehicles[playerid][1] = Vehicle_CreateCS(playerid, 435, 1466.2, 1009.8, 11.4, 90.0, 1, 2);
            }
            SetPlayerPos(playerid, 1459.0, 999.0, 10.82);
            SetPlayerFacingAngle(playerid, 180.0);
            SetPlayerCameraPos(playerid, 1459.0, 992.0, 12.0);
            SetPlayerCameraLookAt(playerid, 1459.0, 1009.0, 10.82);
        }
        case ClassBusDriver:
        {
            // Create a bus for class-selection, and put the player inside to make it appear
            if ((APlayerData[playerid][PlayerClass] != LastClass) || (VehicleSpawned == false))
                AClassSelectionVehicles[playerid][0] = Vehicle_CreateCS(playerid, 437, 1792.6, -1904.7, 13.53, 203.8, 1, 2);
            SetPlayerPos(playerid, 1797.8, -1908.5, 13.4);
            SetPlayerFacingAngle(playerid, 250.0);
            SetPlayerCameraPos(playerid, 1803.2, -1911.6, 14.6);
            SetPlayerCameraLookAt(playerid, 1792.6, -1904.7, 13.53);
        }
        case ClassPilot:
        {
            // Create a shamal for class-selection, and put the player inside to make it appear
            if ((APlayerData[playerid][PlayerClass] != LastClass) || (VehicleSpawned == false))
                AClassSelectionVehicles[playerid][0] = Vehicle_CreateCS(playerid, 519, -1411.5, 81.0, 15.06, 133.5, 1, 2);
            SetPlayerPos(playerid, -1419.3, 79.5, 14.15);
            SetPlayerFacingAngle(playerid, 93.0);
            SetPlayerCameraPos(playerid, -1427.3, 79.4, 15.8);
            SetPlayerCameraLookAt(playerid, -1411.5, 81.0, 15.06);
        }
        case ClassPolice:
        {
            // Create a police car and ranger for class-selection, and put the player inside to make them appear
            if ((APlayerData[playerid][PlayerClass] != LastClass) || (VehicleSpawned == false))
            {
                AClassSelectionVehicles[playerid][0] = Vehicle_CreateCS(playerid, 598, 2284.8, 2422.3, 10.56, 133.4, 1, 0);
                AClassSelectionVehicles[playerid][1] = Vehicle_CreateCS(playerid, 599, 2292.7, 2422.4, 11.01, 229.0, 1, 0);
            }
            SetPlayerPos(playerid, 2288.5, 2420.9, 10.82);
            SetPlayerFacingAngle(playerid, 180.0);
            SetPlayerCameraPos(playerid, 2288.0, 2410.0, 10.88);
            SetPlayerCameraLookAt(playerid, 2288.0, 2422.3, 12.0);
        }
        case ClassMafia:
        {
            // Create a Sandking for class-selection, and put the player inside to make it appear
            if ((APlayerData[playerid][PlayerClass] != LastClass) || (VehicleSpawned == false))
                AClassSelectionVehicles[playerid][0] = Vehicle_CreateCS(playerid, 495, 2823.7, 921.7, 11.1, 228.0, 0, 0);
            SetPlayerPos(playerid, 2823.4, 918.0, 10.75);
            SetPlayerFacingAngle(playerid, 180.0);
            SetPlayerCameraPos(playerid, 2822.7, 911.5, 10.75);
            SetPlayerCameraLookAt(playerid, 2823.4, 918.0, 10.75);
        }
        case ClassCourier:
        {
            // Create a Faggio and Burrito for class-selection, and put the player inside to make them appear
            if ((APlayerData[playerid][PlayerClass] != LastClass) || (VehicleSpawned == false))
            {
                AClassSelectionVehicles[playerid][0] = Vehicle_CreateCS(playerid, 462, -1855.0, -139.0, 11.49, 51.5, 1, 2);
                AClassSelectionVehicles[playerid][1] = Vehicle_CreateCS(playerid, 482, -1850.6, -139.0, 12.01, 340.0, 1, 2);
            }
            SetPlayerPos(playerid, -1853.3, -138.0, 11.9);
            SetPlayerFacingAngle(playerid, 15.0);
            SetPlayerCameraPos(playerid, -1855.0, -130.7, 11.9);
            SetPlayerCameraLookAt(playerid, -1853.3, -138.0, 11.9);
        }
        case ClassAssistance:
        {
            // Create a Towtruck for class-selection, and put the player inside to make it appear
            if ((APlayerData[playerid][PlayerClass] != LastClass) || (VehicleSpawned == false))
                AClassSelectionVehicles[playerid][0] = Vehicle_CreateCS(playerid, 525, -1903.9, 271.8, 40.91, 126.0, 1, 2);
            SetPlayerPos(playerid, -1903.8, 267.4, 41.0);
            SetPlayerFacingAngle(playerid, 162.0);
            SetPlayerCameraPos(playerid, -1906.3, 259.8, 40.3);
            SetPlayerCameraLookAt(playerid, -1903.8, 267.4, 41.0);
        }
        case ClassRoadWorker:
        {
            // Create a xxx for class-selection, and put the player inside to make them appear
            if ((APlayerData[playerid][PlayerClass] != LastClass) || (VehicleSpawned == false))
            {
                AClassSelectionVehicles[playerid][0] = Vehicle_CreateCS(playerid, 552, -1877.4, -1719.4, 21.43, 59.95, 1, 2);
                AClassSelectionVehicles[playerid][1] = Vehicle_CreateCS(playerid, 611, -1872.8, -1722.1, 21.4, 59.95, 1, 2);
            }
            SetPlayerPos(playerid, -1879.5, -1723.7, 21.75);
            SetPlayerFacingAngle(playerid, 133.0);
            SetPlayerCameraPos(playerid, -1886.1, -1729.5, 21.75);
            SetPlayerCameraLookAt(playerid, -1879.5, -1723.7, 23.0);
        }
    }

    return 1;
}

// This function is only used during class-selection
Vehicle_CreateCS(playerid, vModel, Float:x, Float:y, Float:z, Float:rot, Col1, Col2)
{
    // Create the given vehicle at the given coordinates
    new vid = CreateVehicle(vModel, x, y, z, rot, Col1, Col2, 60);
    // Set the vehicle in the player's virtual world for class-selection
    SetVehicleVirtualWorld(vid, 15000 + playerid);
    // Put the player inside the vehicle to make it appear
    PutPlayerInVehicle(playerid, vid, 0);
    // Return the vehicle-id
    return vid;
}

// Spawn the player with his chosen skin at a random location based on his class
    SetSpawnInfo(playerid, 0, GetPlayerSkin(playerid), x, y, z, Angle, 0, 0, 0, 0, 0, 0);
    // Send the message to all players (who joined which class)
    SendClientMessageToAll(0xFFFFFFFF, Msg);

    return 1;
}

// Delete both class-selection vehicles if they exist
    for (new i; i < 2; i++)
    {
        if (AClassSelectionVehicles[playerid][i] != 0)
        {
            DestroyVehicle(AClassSelectionVehicles[playerid][i]);
            AClassSelectionVehicles[playerid][i] = 0;
        }
    }

C:\Users\ACER\Desktop\Всякакви работи\truck\gamemodes\aG.pwn(2702) : error 017: undefined symbol "ClassTrucker"
C:\Users\ACER\Desktop\Всякакви работи\truck\gamemodes\aG.pwn(2715) : error 017: undefined symbol "ClassBusdriver"
C:\Users\ACER\Desktop\Всякакви работи\truck\gamemodes\aG.pwn(2771) : error 017: undefined symbol "ClassRoadworker"
Pawn compiler 3.2.3664	 	 	Copyright © 1997-2006, ITB CompuPhase


3 Errors.