Checkpoints with Dialogs

//--------------------
#include <a_samp>
#include <zcmd>
//--------------------
#define DIALOG_WEAPON 1

new CP[MAX_PLAYERS];

main()
{
    print("\n----------------------------------");
    print(" Checkpoints with Dialogs - JustinAn");
    print("----------------------------------\n");
}

public OnGameModeInit()
{
    SetGameModeText("Checkpoints with Dialogs - JustinAn");
    AddPlayerClass(299, 2489.9390,-1647.3156,14.0772, 180.2384, 0, 0, 0, 0, 0, 0);
    return 1;
}

public OnGameModeExit()
{
    return 1;
}

public OnPlayerRequestClass(playerid, classid)
{
    return 1;
}

public OnPlayerConnect(playerid)
{
    return 1;
}

public OnPlayerDisconnect(playerid, reason)
{
    return 1;
}

public OnPlayerSpawn(playerid)
{
    return 1;
}

public OnPlayerDeath(playerid, killerid, reason)
{
    return 1;
}

public OnVehicleSpawn(vehicleid)
{
    return 1;
}

public OnVehicleDeath(vehicleid, killerid)
{
    return 1;
}

public OnPlayerText(playerid, text[])
{
    return 1;
}

public OnPlayerCommandText(playerid, cmdtext[])
{
    if (strcmp("/mycommand", cmdtext, true, 10) == 0)
    {
        // Do something here
        return 1;
    }
    return 0;
}

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
    return 1;
}

public OnPlayerExitVehicle(playerid, vehicleid)
{
    return 1;
}

public OnPlayerStateChange(playerid, newstate, oldstate)
{
    return 1;
}

public OnPlayerEnterCheckpoint(playerid)
{
    if(CP[playerid] == 1) // This checks if our variable equals to 1, if so: it continues
    {
        DisablePlayerCheckpoint(playerid); // This makes sure that there will be a new checkpoint
        CP[playerid] = 4; // Changes the variable, so we can use it later again with OnPlayerEnterCheckpoint
        GivePlayerWeapon(playerid, 30, 999999);
        SendClientMessage(playerid, -1, "Enjoy your weapon!");
        return 1;
    }
    if(CP[playerid] == 2) // This checks if our variable equals to 2, if so: it continues
    {
        DisablePlayerCheckpoint(playerid); // This makes sure that there will be a new checkpoint
        CP[playerid] = 5; // Changes the variable, so we can use it later again with OnPlayerEnterCheckpoint
        GivePlayerWeapon(playerid, 31, 999999);
        SendClientMessage(playerid, -1, "Enjoy your weapon!");
    }
    if(CP[playerid] == 2) // This checks if our variable equals to 2, if so: it continues
    {
        DisablePlayerCheckpoint(playerid); // This makes sure that there will be a new checkpoint
        CP[playerid] = 6; // Changes the variable, so we can use it later again with OnPlayerEnterCheckpoint
        GivePlayerWeapon(playerid, 34, 999999);
        SendClientMessage(playerid, -1, "Enjoy your weapon!");
    }
    return 1;
}

public OnPlayerLeaveCheckpoint(playerid)
{
    return 1;
}

public OnPlayerEnterRaceCheckpoint(playerid)
{
    return 1;
}

public OnPlayerLeaveRaceCheckpoint(playerid)
{
    return 1;
}

public OnRconCommand(cmd[])
{
    return 1;
}

public OnPlayerRequestSpawn(playerid)
{
    return 1;
}

public OnObjectMoved(objectid)
{
    return 1;
}

public OnPlayerObjectMoved(playerid, objectid)
{
    return 1;
}

public OnPlayerPickUpPickup(playerid, pickupid)
{
    return 1;
}

public OnVehicleMod(playerid, vehicleid, componentid)
{
    return 1;
}

public OnVehiclePaintjob(playerid, vehicleid, paintjobid)
{
    return 1;
}

public OnVehicleRespray(playerid, vehicleid, color1, color2)
{
    return 1;
}

public OnPlayerSelectedMenuRow(playerid, row)
{
    return 1;
}

public OnPlayerExitedMenu(playerid)
{
    return 1;
}

public OnPlayerInteriorChange(playerid, newinteriorid, oldinteriorid)
{
    return 1;
}

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    return 1;
}

public OnRconLoginAttempt(ip[], password[], success)
{
    return 1;
}

public OnPlayerUpdate(playerid)
{
    return 1;
}

public OnPlayerStreamIn(playerid, forplayerid)
{
    return 1;
}

public OnPlayerStreamOut(playerid, forplayerid)
{
    return 1;
}

public OnVehicleStreamIn(vehicleid, forplayerid)
{
    return 1;
}

public OnVehicleStreamOut(vehicleid, forplayerid)
{
    return 1;
}

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    if(dialogid == DIALOG_WEAPON) // This checks if the dialog equals to the dialog define 'DIALOG_WEAPON', You can use a switch aswell, but i just prefer just to see the whole line
    {
        if(!response) return 0; // If you press the second button (No), the dialog dissapears and nothing happens
        if(response) // If there is a response (first button( Yes )) it continues
        {
            if(listitem == 0) // If you choose the first listitem, this happens
            {
                CP[playerid] = 1;
                SetPlayerCheckpoint(playerid, 2745.6499,-2453.8032,13.8623, 1.0);
                SendClientMessage(playerid, -1, "You have chosen the AK-47, follow the checkpoint to get the AK-47.");
                return 1;
            }
            if(listitem == 1) // If you choose the second listitem
            {
                CP[playerid] = 2;
                SetPlayerCheckpoint(playerid, 1579.4326,-1635.8755,13.5604, 1.0); // This creates a checkpoint at the coördinates: "-1051.4005,-655.8729,31.7361"
                SendClientMessage(playerid, -1, "You have chosen the M4, follow the checkpoint to get the M4.");
                return 1;
            }
            if(listitem == 2) // If you choose the third listitem
            {
                CP[playerid] = 3;
                SetPlayerCheckpoint(playerid, 1544.9388,-1353.3195,329.4743, 1.0); // This creates a checkpoint at the coördinates: "-2286.7529,2282.9390,5.9015"
                SendClientMessage(playerid, -1, "You have chosen the Sniper Rifle, follow the checkpoint to get the Sniper Rifle.");
                return 1;
            }
        }
    }
    return 1;
}

public OnPlayerClickPlayer(playerid, clickedplayerid, source)
{
    return 1;
}

// COMMANDS
CMD:weapons(playerid, params[])
{
    ShowPlayerDialog(playerid, DIALOG_WEAPON, DIALOG_STYLE_LIST, "Weapons", "AK47\nM4\nSniper Rifle", "Yes", "No");
    return 1;
}