[0.3.7] UFO

#include    <a_samp>
native      IsValidVehicle(vehicleid);

new
    ShipObject[MAX_VEHICLES] = {INVALID_OBJECT_ID, ...};

public OnFilterScriptExit()
{
    for(new i; i < MAX_VEHICLES; ++i)
    {
        if(IsValidVehicle(i) && IsValidObject(ShipObject[i]))
        {
            DestroyVehicle(i);
            DestroyObject(ShipObject[i]);
            ShipObject[i] = INVALID_OBJECT_ID;
        }
    }

    return 1;
}

public OnPlayerCommandText(playerid, cmdtext[])
{
    if(!strcmp(cmdtext, "/ufo"))
    {
        if(!IsPlayerAdmin(playerid)) return SendClientMessage(playerid, 0xC0392BFF, "ERROR: {FFFFFF}Only RCON admins can use this command.");
        if(IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid, 0xC0392BFF, "ERROR: {FFFFFF}You can't use this command if you're in a vehicle.");
        if(GetPlayerInterior(playerid) > 0) return SendClientMessage(playerid, 0xC0392BFF, "ERROR: {FFFFFF}You can't use this command if you're in an interior.");
        new Float: x, Float: y, Float: z, Float: a;
        GetPlayerPos(playerid, x, y, z);
        GetPlayerFacingAngle(playerid, a);
        new id = CreateVehicle(501, x, y, z, a, 1, 1, -1);
        LinkVehicleToInterior(id, 1);
        ShipObject[id] = CreateObject(18846, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
        AttachObjectToVehicle(ShipObject[id], id, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
        PutPlayerInVehicle(playerid, id, 0);
        return 1;
    }

    if(!strcmp(cmdtext, "/removeufo"))
    {
        if(!IsPlayerAdmin(playerid)) return SendClientMessage(playerid, 0xC0392BFF, "ERROR: {FFFFFF}Only RCON admins can use this command.");
        if(!IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid, 0xC0392BFF, "ERROR: {FFFFFF}You can't use this command if you're not in a vehicle.");
        if(!IsValidObject(ShipObject[ GetPlayerVehicleID(playerid) ])) return SendClientMessage(playerid, 0xC0392BFF, "ERROR: {FFFFFF}You're not flying a UFO.");
        new id = GetPlayerVehicleID(playerid);
        DestroyVehicle(id);
        DestroyObject(ShipObject[id]);
        ShipObject[id] = INVALID_OBJECT_ID;
        return 1;
    }

    return 0;
}

public OnVehicleDeath(vehicleid, killerid)
{
    if(IsValidObject(ShipObject[vehicleid]))
    {
        DestroyVehicle(vehicleid);
        DestroyObject(ShipObject[vehicleid]);
        ShipObject[vehicleid] = INVALID_OBJECT_ID;
    }

    return 1;
}