#include <amxmodx>
#include <reapi>

new last_stand[33],Float:duck_start_time[33]

public plugin_init() {
   register_plugin("Anti DD Scroll", "Test", "Test");
   RegisterHookChain(RG_CBasePlayer_Duck, "RG_Duck");

   register_cvar("adds_version", "1.0", FCVAR_SERVER | FCVAR_SPONLY);
}

public RG_Duck(id)
{
    new button = get_entvar(id, EntVars:var_button); // get_user_button(id)
    new oldbutton = get_entvar(id, EntVars:var_oldbuttons); // get_user_oldbutton(id)
    if(button & IN_DUCK)
    {
        if(last_stand[id])
        {
            duck_start_time[id] = get_gametime();
            last_stand[id] = false;
        }

    }
    else if(oldbutton & IN_DUCK)
    {
        if(!last_stand[id])
        {
            new Float:fGameTime = get_gametime()

            // So low time, this is scroll for sure, block duck.
            if((fGameTime-duck_start_time[id])<0.018)
            {
                new Float:vVeloc[3];
                get_entvar(id, var_velocity, vVeloc);
                vVeloc[0] = vVeloc[0]/2;
                vVeloc[1] = vVeloc[1]/2;
                set_entvar(id, var_velocity, vVeloc);
            }
        }
        last_stand[id] = true;
    }
}