void hook_player_g_speed(int client) {
    int player = *(int *)(client + 344);
    int id = gentityaddress_to_num(client);

    int newgravity = player_g_gravity[id];
    if (newgravity > 0)
        *(int *)(player + 72) = newgravity;

    int newspeed = player_g_speed[id];
    if (newspeed > 0)
        *(int *)(player + 80) = newspeed;

    calc_client_speed(client);
}