stock Sprite_SetTransparency(iSprite, iRendermode, Float: flAmt, iFx = kRenderFxNone)
{
    set_pev(iSprite, pev_rendermode, iRendermode);
    set_pev(iSprite, pev_renderamt, flAmt);
    set_pev(iSprite, pev_renderfx, iFx);
}

stock UTIL_CreateMuzzleFlash(iPlayer, const szMuzzleSprite[], iType, Float: flScale, Float: flBrightness, iAttachment, Float: flNextThink)
{
    if(global_get(glb_maxEntities) - engfunc(EngFunc_NumberOfEntities) < ENTITY_SPRITES_INTOLERANCE) return FM_NULLENT;

    static iSprite, iszAllocStringCached;
    if(iszAllocStringCached || (iszAllocStringCached = engfunc(EngFunc_AllocString, "env_sprite")))
        iSprite = engfunc(EngFunc_CreateNamedEntity, iszAllocStringCached);

    if(pev_valid(iSprite) != PDATA_SAFE) return FM_NULLENT;

    set_pev(iSprite, pev_model, szMuzzleSprite);
    set_pev(iSprite, pev_spawnflags, SF_SPRITE_ONCE);

    set_pev(iSprite, pev_classname, ENTITY_MUZZLE_CLASSNAME);
    set_pev(iSprite, pev_impulse, gl_iszAllocString_MuzzleKey);
    set_pev(iSprite, pev_owner, iPlayer);
    set_pev(iSprite, pev_fuser3, flNextThink);
    set_pev(iSprite, pev_iuser1, iType);
    set_pev(iSprite, pev_aiment, iPlayer);
    set_pev(iSprite, pev_body, iAttachment);

    Sprite_SetTransparency(iSprite, kRenderTransAdd, flBrightness);
    set_pev(iSprite, pev_scale, flScale);

    dllfunc(DLLFunc_Spawn, iSprite);

    return iSprite;
}