Not sure if it's this you need.
This removes c4 from being picked up by a player.
PHP Code:
#include <sourcemod>
#include <sdkhooks>
public OnClientPutInServer(client)
{
SDKHook(client, SDKHook_WeaponCanUse, OnWeaponCanUse);
}
public Action:OnWeaponCanUse(client, weaponent)
{
if(IsClientInGame(client) && IsPlayerAlive(client))
{
decl String:Wep[32];
GetEdictClassname(weaponent, Wep, sizeof(Wep));
if(StrContains(Wep, "c4")>-1) {
return Plugin_Handled;
}
}
return Plugin_Continue;
}