new 
    gPersonalVehicle[ MAX_PLAYERS ], //used to store the player's personal vehicleID
    gPersonalModel[ MAX_PLAYERS ]; //used to store the player's personal modelID

public OnPlayerConnect(playerid)
{
    gPersonalVehicle[ playerid ] = 0;
    gPersonalModel[ playerid ] = 0;
    return true;
}

public OnPlayerDisconnect(playerid, reason)
{
    gPersonalVehicle[ playerid ] = 0;
    gPersonalModel[ playerid ] = 0;
    return true;
}

dcmd_spawnveh(playerid, params[])
{
    new
        iModel, //the variable we will use for the parameter in this command
        Float:x,
        Float:y,  //x, y, z is the floats we will use to store the player's position.
        Float:z,
        str[ 76 ];  //a string variable with 76 cells

    if( sscanf( params, "%d", iModel )) //checks if the parameter is an integer, or even typed in
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Usage: \"/spawnveh <modelid>\"" );
        //send a message to 'playerid' with color RED, saying this string ^
    if( IsPlayerInAnyVehicle( playerid )) //checks if the player is inside any vehicle, and tell him/her to exit the vehicle before spawning a personal one
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Please exit your current vehicle before using this command" );
    if( GetPlayerInterior( playerid ) != 0 ) //checks if player is not in the interior 0 (outdoors)
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Only usable outdoors (interior 0)" );
    if( iModel < 400 || iModel > 611 ) //checks if the modelid parameter is less than 400 or more than 611. Lowest modelid is 400 and highest is 611
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Invalid modelID" );
    if( gPersonalVehicle[ playerid ] != 0 ) //checks if gPersonalVehicle is more than -1, if it is, this player already got a personal vehicle, and we have to do something
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]You already have a personal vehicle! Use the /getveh command to teleport the vehicle to you, or /changeveh to change your personal vehicle." );
    GetPlayerPos( playerid, x, y, z ); //stores the player's position coordinates into the variables; x, y and z
    gPersonalVehicle[ playerid ] = CreateVehicle( iModel, x, y, z, 0, -1, -1, 10*60*1000 );
    //creates a vehicle (stored within the variable gPersonalVehicle) with the decided model, at the exact same position as the player is standing, with random colors and a respawn time at 10 minutes.
    gPersonalModel[ playerid ] = iModel; //sets the variable gPersonalModel equal to iModel
    PutPlayerInVehicle( playerid, gPersonalVehicle[ playerid ], 0 ); //puts the player in his/her personal vehicle as the driver. This is why we checked if the player already were inside a vehicle or not.
    format( str, sizeof( str ), "[SUCCESS]Successfully spawned your very own personal vehicle! (ModelID: %d)", iModel ); //just a simple format message to include the chosen model id in the message.
    SendClientMessage( playerid, 0x00FF00FF, str ); //sends the formatted string
    return true; //returns the command
}

dcmd_getveh(playerid, params[])
{
    #pragma unused params //this line hides the warning that "params" is unused, since we don't use it in this command
    new
        Float:x,
        Float:y,  //x, y, z is the floats we will use to store the player's position.
        Float:z;

    if( gPersonalVehicle[ playerid ] == 0 ) //checks if the player doesn't already have a personal vehicle
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]You haven't spawned a personal vehicle yet! Use /spawnveh to spawn one." );
    if( IsPlayerInAnyVehicle( playerid )) //checks if the player is inside any vehicle, and tell him/her to exit the vehicle before teleporting his/her personal one
    if( GetPlayerInterior( playerid ) != 0 ) //checks if player is not in the interior 0 (outdoors)
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Only usable outdoors (interior 0)" );
    GetPlayerPos( playerid, x, y, z );//again, this stores the player's position coordinates into the variables; x, y and z
    DestroyVehicle( gPersonalVehicle[ playerid ] ); //destroys the players personal vehicle, before we spawn it again
    gPersonalVehicle[ playerid ] = CreateVehicle( gPersonalModel[ playerid ], x, y, z, 0, -1, -1, 10*60*1000 );
    //same as last time, we create a vehicle assigned to the variable 'gPersonalVehicle'
    PutPlayerInVehicle( playerid, gPersonalVehicle[ playerid ], 0 ); //puts the player in his/her personal vehicle as the driver. This is why we checked if the player already were inside a vehicle or not.
    SendClientMessage( playerid, 0x00FF00FF, "[SUCCESS]Personal vehicle teleported to your location" );
    return true; //return the command
}

dcmd_changeveh(playerid, params[])
{
    if( gPersonalVehicle[ playerid ] == 0 ) //checks if the player doesn't already have a personal vehicle
        return dcmd_spawnveh(playerid, params); //"redirect" the player to the spawn command
    new
        iNewModel, //the variable we will use for the parameter in this command
        str[ 50 ];  //a string variable with 50 cells

    if( sscanf( params, "%d", iNewModel )) //checks if the parameter is an integer, or even typed in
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Usage: \"/changeveh <modelid>\"" );
        //send a message to 'playerid' with color RED, saying this string ^
    if( iNewModel < 400 || iNewModel > 611 ) //checks if the modelid parameter is less than 400 or more than 611. Lowest modelid is 400 and highest is 611
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Invalid modelID" );
    if( IsPlayerInVehicle( playerid, gPersonalVehicle[ playerid ] )) //if the player is inside his/her personal vehicle
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]You must exit your personal vehicle for this command to work!" );
    gPersonalModel[ playerid ] = iNewModel; //sets the players personal vehicle modelid, to the newly wanted one.
    DestroyVehicle( gPersonalVehicle[ playerid ] ); //destroys the players personal vehicle
    format( str, sizeof( str ), "[SUCCESS]Personal vehicle changed to modelid %d!", iNewModel ); //again we format a message (string) for the player to recieve
    SendClientMessage( playerid, 0x00FF00FF, str ); //here we send the message with the formatted string.
    return true; //lastly we return the command
}

public OnPlayerCommandText(playerid, cmdtext[])
{
    dcmd(spawnveh, 8, cmdtext); //call the command 'spawnveh' which has 8 characters
    dcmd(getveh, 6, cmdtext); //call the command 'getveh' which has 6 characters
    dcmd(changeveh, 9, cmdtext); //call the command 'changeveh' which has 9 characters
    return false; //remember that OnPlayerCommandText should return false.
}

//DCMD
#define dcmd(%1,%2,%3) \
if (!strcmp((%3)[1], #%1, true, (%2)) && ((((%3)[(%2) + 1] == '\0') && (dcmd_%1(playerid, ""))) || (((%3)[(%2) + 1] == ' ') && (dcmd_%1(playerid, (%3)[(%2) + 2]))))) \
return 1

new
    cmd[ 128 ],
    idx;

    cmd = strtok(cmdtext, idx);

if( !strcmp( cmd, "/spawnveh", true )) //Checks if the player types /spawnveh
{
    new
        iModel, //the variable we will use for the parameter in this command
        Float:x,
        Float:y,  //x, y, z is the floats we will use to store the player's position.
        Float:z,
        str[ 76 ],  //a string variable with 76 cells
        tmp[ 128 ]; //the variable we use for strtok

    tmp = strtok(cmdtext, idx);
    if( !strlen( tmp )) //checks if the parameter is typed in
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Usage: \"/spawnveh <modelid>\"" );
        //send a message to 'playerid' with color RED, saying this string ^
    iModel = strval( tmp ); //iModel stores the parameter
    if( IsPlayerInAnyVehicle( playerid )) //checks if the player is inside any vehicle, and tell him/her to exit the vehicle before spawning a personal one
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Please exit your current vehicle before using this command" );
    if( GetPlayerInterior( playerid ) != 0 ) //checks if player is not in the interior 0 (outdoors)
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Only usable outdoors (interior 0)" );
    if( iModel < 400 || iModel > 611 ) //checks if the modelid parameter is less than 400 or more than 611. Lowest modelid is 400 and highest is 611
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Invalid modelID" );
    if( gPersonalVehicle[ playerid ] != 0 ) //checks if gPersonalVehicle is more than -1, if it is, this player already got a personal vehicle, and we have to do something
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]You already have a personal vehicle! Use the /getveh command to teleport the vehicle to you, or /changeveh to change your personal vehicle." );
    GetPlayerPos( playerid, x, y, z ); //stores the player's position coordinates into the variables; x, y and z
    gPersonalVehicle[ playerid ] = CreateVehicle( iModel, x, y, z, 0, -1, -1, 10*60*1000 );
    //creates a vehicle (stored within the variable gPersonalVehicle) with the decided model, at the exact same position as the player is standing, with random colors and a respawn time at 10 minutes.
    gPersonalModel[ playerid ] = iModel; //sets the variable gPersonalModel equal to iModel
    PutPlayerInVehicle( playerid, gPersonalVehicle[ playerid ], 0 ); //puts the player in his/her personal vehicle as the driver. This is why we checked if the player already were inside a vehicle or not.
    format( str, sizeof( str ), "[SUCCESS]Successfully spawned your very own personal vehicle! (ModelID: %d)", iModel ); //just a simple format message to include the chosen model id in the message.
    SendClientMessage( playerid, 0x00FF00FF, str ); //sends the formatted string
    return true; //returns the command
}

if( !strcmp( cmdtext, "/getveh", true ))
{
    new
        Float:x,
        Float:y,  //x, y, z is the floats we will use to store the player's position.
        Float:z;

    if( gPersonalVehicle[ playerid ] == 0 ) //checks if the player doesn't already have a personal vehicle
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]You haven't spawned a personal vehicle yet! Use /spawnveh to spawn one." );
    if( IsPlayerInAnyVehicle( playerid )) //checks if the player is inside any vehicle, and tell him/her to exit the vehicle before teleporting his/her personal one
    if( GetPlayerInterior( playerid ) != 0 ) //checks if player is not in the interior 0 (outdoors)
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Only usable outdoors (interior 0)" );
    GetPlayerPos( playerid, x, y, z );//again, this stores the player's position coordinates into the variables; x, y and z
    DestroyVehicle( gPersonalVehicle[ playerid ] ); //destroys the players personal vehicle, before we spawn it again
    gPersonalVehicle[ playerid ] = CreateVehicle( gPersonalModel[ playerid ], x, y, z, 0, -1, -1, 10*60*1000 );
    //same as last time, we create a vehicle assigned to the variable 'gPersonalVehicle'
    PutPlayerInVehicle( playerid, gPersonalVehicle[ playerid ], 0 ); //puts the player in his/her personal vehicle as the driver. This is why we checked if the player already were inside a vehicle or not.
    SendClientMessage( playerid, 0x00FF00FF, "[SUCCESS]Personal vehicle teleported to your location" );
    return true; //return the command
}

if( !strcmp( cmd, "/changeveh", true ))
{
    if( gPersonalVehicle[ playerid ] == 0 ) //checks if the player doesn't already have a personal vehicle
        return OnPlayerCommandText(playerid, "/spawnveh"); //"redirect" the player to the spawn command
    new
        iNewModel, //the variable we will use for the parameter in this command
        str[ 50 ],  //a string variable with 50 cells
        tmp[ 128 ];

    tmp = strtok(cmdtext, idx);
    if( !strlen( tmp )) //checks if the parameter is typed in
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Usage: \"/changeveh <modelid>\"" );
        //send a message to 'playerid' with color RED, saying this string ^
    iNewModel = strval( tmp );
    if( iNewModel < 400 || iNewModel > 611 ) //checks if the modelid parameter is less than 400 or more than 611. Lowest modelid is 400 and highest is 611
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]Invalid modelID" );
    if( IsPlayerInVehicle( playerid, gPersonalVehicle[ playerid ] )) //if the player is inside his/her personal vehicle
        return SendClientMessage( playerid, 0xFF0000FF, "[ERROR]You must exit your personal vehicle for this command to work!" );
    gPersonalModel[ playerid ] = iNewModel; //sets the players personal vehicle modelid, to the newly wanted one.
    DestroyVehicle( gPersonalVehicle[ playerid ] ); //destroys the players personal vehicle
    format( str, sizeof( str ), "[SUCCESS]Personal vehicle changed to modelid %d!", iNewModel ); //again we format a message (string) for the player to recieve
    SendClientMessage( playerid, 0x00FF00FF, str ); //here we send the message with the formatted string.
    return true; //lastly we return the command
}

strtok(const string[], &index)
{
    new length = strlen(string);
    while ((index < length) && (string[index] <= ' '))
    {
        index++;
    }
 
    new offset = index;
    new result[20];
    while ((index < length) && (string[index] > ' ') && ((index - offset) < (sizeof(result) - 1)))
    {
        result[index - offset] = string[index];
        index++;
    }
    result[index - offset] = EOS;
    return result;
}