public OnPlayerUpdate(playerid)
{
    new Keys, ud, lr;
    GetPlayerKeys(playerid, Keys, ud, lr);
    if(ud == KEY_UP) //Player is pressing 'UP or W' (By default)
    else if(ud == KEY_DOWN) //Player is pressing 'DOWN or S' (By default)
 
    if(lr == KEY_LEFT) //Player is pressing 'LEFT or A' (By default)
    else if(lr == KEY_RIGHT) //Player is pressing 'RIGHT or D' (By default)
    return 1;
}