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erlang_behaviour_trees

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An implementation of behaviour trees in erlang.

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erlang_behaviour_trees src bt_engine bt_node_behaviours bt_task.erl
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src/bt_engine/bt_node_behaviours/bt_task.erl 

-module(bt_task).

-include("./nodes.hrl").



-optional_callbacks([

  init/2,

  %% TODO: exactly one of run/3 and run/4 must be defined; how to ensure that?

  run/3,

  run/4

]).



-callback init(Args :: map(), BB :: blackboard()) ->

  NewState :: term().



%% get the list of params that are required by this node. used for type checking.

-callback get_params() ->

  List :: list().





%% tasks and decorators should have their own state? yes. can make it optional in tasks though.

-callback run(Args :: map(), State:: term(), BB :: blackboard(), Event :: term()) ->

  {status(), NewState :: term(), NewBB :: blackboard()}.



-callback run(Args :: map(), BB :: blackboard(), Event :: term()) ->

  {status(), NewBB :: blackboard()}.