#include <amxmodx> 
#include <fakemeta> 
#include <hamsandwich> 
 
new const VERSION[] = "1.1.1" 
 
const MAX_ENTSARRAYS_SIZE = 64 
 
new g_bitGonnaExplode[MAX_ENTSARRAYS_SIZE] 
#define SetGrenadeExplode(%1)        g_bitGonnaExplode[%1>>5] |=  1<<(%1 & 31) 
#define ClearGrenadeExplode(%1)    g_bitGonnaExplode[%1>>5] &= ~( 1 << (%1 & 31) ) 
#define WillGrenadeExplode(%1)    g_bitGonnaExplode[%1>>5] &   1<<(%1 & 31) 
 
const XTRA_OFS_PLAYER = 5 
const m_iTeam = 114 
#define cs_get_user_team_index(%1)    get_pdata_int(%1, m_iTeam, XTRA_OFS_PLAYER) 
 
new Float:g_flCurrentGameTime, g_iCurrentFlasher, g_iCurrentFlashBang 
 
new mp_friendlyfire 
 
new g_iMaxPlayers 
#define IsPlayer(%1)    ( 1 <= %1 <= g_iMaxPlayers ) 
 
public plugin_init() 
{ 
    register_plugin("Anti Flashbang Bug", VERSION, "Numb / ConnorMcLeod") 
 
    RegisterHam(Ham_Think, "grenade", "Ham__CGrenade_Think__Pre") 
 
    register_forward(FM_FindEntityInSphere, "Fm__FindEntityInSphere__Pre") 
 
    mp_friendlyfire = get_cvar_pointer("mp_friendlyfire") 
 
    g_iMaxPlayers = get_maxplayers() 
} 
 
public Ham__CGrenade_Think__Pre( iEnt ) 
{ 
    static Float:flGameTime, Float:flDmgTime, iOwner 
    flGameTime = get_gametime() 
    pev(iEnt, pev_dmgtime, flDmgTime) 
    if(    flDmgTime <= flGameTime 
    &&    get_pdata_int(iEnt, 114) == 0 // has a bit when is HE or SMOKE 
    &&    !(get_pdata_int(iEnt, 96) & (1<<8)) // has this bit when is c4 
    &&    IsPlayer( (iOwner = pev(iEnt, pev_owner)) )    ) // if no owner grenade gonna be removed from world 
    { 
        if( ~WillGrenadeExplode(iEnt) ) // grenade gonna explode on next think 
        { 
            SetGrenadeExplode( iEnt ) 
        } 
        else 
        { 
            ClearGrenadeExplode( iEnt ) 
            g_flCurrentGameTime = flGameTime 
            g_iCurrentFlasher = iOwner 
            g_iCurrentFlashBang = iEnt 
        } 
    } 
} 
 
public Fm__FindEntityInSphere__Pre(iStartEnt, Float:fVecOrigin[3], Float:flRadius) 
{ 
    const Float:FLASHBANG_SEARCH_RADIUS = 1500.0 
    if(    flRadius == FLASHBANG_SEARCH_RADIUS 
    &&    get_gametime() == g_flCurrentGameTime    ) 
    { 
        new id = iStartEnt, Float:fVecPlayerEyeOrigin[3], Float:flFraction, friendlyfire = get_pcvar_num(mp_friendlyfire) 
 
        while( IsPlayer( (id=engfunc(EngFunc_FindEntityInSphere, id, fVecOrigin, flRadius)) ) ) 
        { 
            if( is_user_alive(id) ) 
            { 
                pev(id, pev_origin, fVecPlayerEyeOrigin) 
                fVecPlayerEyeOrigin[2] += ((pev(id, pev_flags) & FL_DUCKING) ? 12.0 : 18.0) 
 
                engfunc(EngFunc_TraceLine, fVecOrigin, fVecPlayerEyeOrigin, DONT_IGNORE_MONSTERS, g_iCurrentFlashBang, 0) 
 
                get_tr2(0, TR_flFraction, flFraction) 
 
                if( flFraction < 1.0 && get_tr2(0, TR_pHit) == id ) 
                { 
                    engfunc(EngFunc_TraceLine, fVecPlayerEyeOrigin, fVecOrigin, DONT_IGNORE_MONSTERS, id, 0) 
                    get_tr2(0, TR_flFraction, flFraction) 
                    if(    flFraction == 1.0 
                    &&    (    friendlyfire 
                        ||    id == g_iCurrentFlasher 
                        ||    cs_get_user_team_index(id) != cs_get_user_team_index(g_iCurrentFlasher)    ) ) 
                    { 
                        forward_return(FMV_CELL, id) 
                        return FMRES_SUPERCEDE 
                    } 
                } 
            } 
        } 
        forward_return(FMV_CELL, 0) 
        return FMRES_SUPERCEDE 
    } 
    return FMRES_IGNORED 
 
}