anchor.diff:      [reproduction, death, fight].
   
   
  --spec meeting_function({agent_behaviour(), [agent()]}, sim_params()) -> [agent()].
  +-spec meeting_function({agent_behaviour(), [agent()]}, sim_params()) ->
  +                              [agent()].
   meeting_function({death, _}, _SP) ->
       [];
   
  
positive.code: %% Callbacks
  %% ====================================================================
  
  -spec start(model(),pos_integer()) -> agent().
  start(Model, Time) ->
      start(Model, Time, []).
  
  
  -spec start(model(),pos_integer(),[tuple()]) -> agent().
  start(Model, Time, SimParamOptions) ->
      start(Model, Time, SimParamOptions, []).
  
  
  -spec start(model(),pos_integer(),[tuple()],[tuple()]) -> agent().
  start(Model, Time, SimParamOptions, ConfigOptions) ->
      SimParamsUpdated = mas_misc_util:overwrite_options(SimParamOptions, load_params()),
      Agents = mas:start(?MODULE, Model, Time, proplist_to_record(SimParamsUpdated), ConfigOptions),
      extract_best(Agents).
  
  
  
negative.code:                           Fitness
                    end,
      Fitness_reduce = fun(F1, F2) ->
                               lists:max([F1, F2])
                       end,
      [{fitness, Fitness_map, Fitness_reduce, -999999}].
  
  