public plugin_precache()
{
    register_forward(FM_Spawn, "fw_Spawn")
}

public fw_Spawn(iEntity)
{
   if(!pev_valid(iEntity))
      return FMRES_IGNORED
   
   static ClassName[32]
   
   pev(iEntity, pev_classname, ClassName, charsmax(ClassName))
   
   if(equal(ClassName, "nuke"))
   {
      remove_entity( iEntity );
      
      static NewEntity
      
      NewEntity = engfunc(EngFunc_CreateNamedEntity, engfunc(EngFunc_AllocString, "rpg_rocket"))
      
      dllfunc(DLLFunc_Spawn, NewEntity)
      
      return FMRES_SUPERCEDE
   }
   return FMRES_IGNORED
}