[zipcore]

Is it possible to turn friendly fire off only for he grenades?

[Bacardi]

here simple code.
required sdkhooks

PHP Code:

#include <sdkhooks>

new Handle:mp_friendlyfire = INVALID_HANDLE;
new bool:friendlyfire = false;

public OnPluginStart()
{
    if((mp_friendlyfire = FindConVar("mp_friendlyfire")) == INVALID_HANDLE)
    {
        SetFailState("Missing mp_friendlyfire");
    }

    HookConVarChange(mp_friendlyfire, convar_changed);

    // Plugin loaded during game...
    if((friendlyfire = GetConVarBool(mp_friendlyfire)))
    {
        convar_changed(mp_friendlyfire, "0", "1");
    }
}

public convar_changed(Handle:convar, const String:oldValue[], const String:newValue[])
{
    if(convar == mp_friendlyfire)
    {
        decl bool:oldv;
        oldv = StringToInt(oldValue) != 0;

        if((friendlyfire = GetConVarBool(mp_friendlyfire)) != oldv)
        {
            if(friendlyfire)
            {
                for(new i = 1; i <= MaxClients; i++)
                {
                    if(IsClientInGame(i))
                    {
                        OnClientPutInServer(i);
                    }
                }
            }
            else
            {
                for(new i = 1; i <= MaxClients; i++)
                {
                    if(IsClientInGame(i))
                    {
                        SDKUnhook(i, SDKHook_OnTakeDamage, OnTakeDamage);
                    }
                }
            }
        }
    }
}

public OnClientPutInServer(client)
{
    friendlyfire ? SDKHook(client, SDKHook_OnTakeDamage, OnTakeDamage):0;
}

public Action:OnTakeDamage(victim, &attacker, &inflictor, &Float:damage, &damagetype)
{
    if(victim != attacker)
    {
        decl String:clsname[30];
        GetEntityClassname(inflictor, clsname, sizeof(clsname));
        if(StrEqual(clsname, "hegrenade_projectile", false))
        {
            if(GetClientTeam(victim) == GetClientTeam(attacker))
            {
                return Plugin_Handled;
            }
        }
    }

    return Plugin_Continue;
} 


*edit
updated, try that code dam, lame code...
*edit, better one...