SourceSDK aimbot/nospread snippet

C_BaseEntity *aimlock = 0;
ConVar aimbot_on("aimbot_on", "0", FCVAR_CHEAT);
ConVar trgbot_on("trgbot_on", "0", FCVAR_CHEAT);
ConVar esp_on("esp_on", "0", FCVAR_CHEAT);
ConVar nospread_on("nospread_on", "0", FCVAR_CHEAT);

        // If we're firing multiple shots, and the first shot has to be bang on target, ignore spread
        if ( iShot == 0 && info.m_iShots > 1 && (info.m_nFlags & FIRE_BULLETS_FIRST_SHOT_ACCURATE) )
        {
            vecDir = Manipulator.GetShotDirection();
        }
        else if (!nospread_on.GetBool())
        {
            // Don't run the biasing code for the player at the moment.
            vecDir = Manipulator.ApplySpread( info.m_vecSpread );
        }

    if (aimbot_on.GetBool())
    {
        C_BasePlayer *lp = UTIL_PlayerByIndex(1);

        float radius = 2048.0f;
        C_BaseEntity *ents[256];
        int ent_count = UTIL_EntitiesInSphere(ents, 256, lp->GetAbsOrigin(), radius, 0);
        int i = 0;
        for (i = 0; i < ent_count; i++)
        {
            if (aimlock == 0 && (ents[i] != NULL)
                && ents[i]->IsAlive() && ents[i]->IsNPC()
                && (ents[i]->GetMoveType() != MOVETYPE_NONE)
                && (ents[i]->GetMoveType() != MOVETYPE_OBSERVER))
            {
                aimlock = ents[i];
                break;
            }
            else if (aimlock != 0)
            {
                if ((ents[i] == NULL)
                    || !ents[i]->IsAlive() || !ents[i]->IsNPC()
                    || (ents[i]->GetMoveType() == MOVETYPE_NONE)
                    || (ents[i]->GetMoveType() == MOVETYPE_OBSERVER))
                {
                    aimlock = 0;
                    break;
                }
            }
        }

        if (aimlock != 0)
        {
            Vector aimpos; aimpos.Init();
            QAngle aimang; aimang.Init();

            C_BasePlayer *enemy = (C_BasePlayer*)aimlock;
            Vector epos = enemy->GetAbsOrigin();
            epos.z += enemy->BoundingRadius();
            Vector lpos = lp->GetAbsOrigin();
            lpos.z += (lp->BoundingRadius()>40)?64:28;

            QAngle aang;
            int atch = ents[i]->LookupAttachment("ValveBiped.Bip01_Head1");
            if (atch != 0) ents[i]->GetAttachment(atch, epos, aang);

            aimpos = epos - lpos;
            VectorAngles(aimpos, aimang);
            pCmd->viewangles = aimang;

            if (trgbot_on.GetBool())
            {
                if (pCmd->buttons & IN_ATTACK)
                    pCmd->buttons &= ~IN_ATTACK;
                else pCmd->buttons &= IN_ATTACK;
            }
        }
    }

    if (esp_on.GetBool())
    {
        float radius = 4096.0f;
        C_BaseEntity *ents[256];
        int ent_count = UTIL_EntitiesInSphere(ents, 256,
            UTIL_PlayerByIndex(1)->GetAbsOrigin(), radius, 0);
        int i = 0;
        for (i = 0; i < ent_count; i++)
        {
            if ((ents[i] != NULL)
                && ents[i]->IsAlive() && ents[i]->IsNPC()
                && (ents[i]->GetMoveType() != MOVETYPE_NONE)
                && (ents[i]->GetMoveType() != MOVETYPE_OBSERVER))
            {
                CCollisionProperty *pCollide = ents[i]->CollisionProp();
                debugoverlay->AddBoxOverlay(ents[i]->GetAbsOrigin(),
                    pCollide->OBBMins(), pCollide->OBBMaxs(),
                    ents[i]->GetAbsAngles(), 255, 0, 0, 10, 0.1f);
            }
        }
    }