120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
import io
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import contextlib
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import os
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import importlib.util
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from robowaiter.utils.bt.load import load_bt_from_ptml,find_node_by_name,print_tree_from_root
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from robowaiter.utils.bt.visitor import StatusVisitor
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from robowaiter.behavior_tree.obtea.OptimalBTExpansionAlgorithm import Action # 调用最优行为树扩展算法
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from robowaiter.behavior_tree.obtea.opt_bt_exp_main import BTOptExpInterface
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from robowaiter.behavior_lib.act.DelSubTree import DelSubTree
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from robowaiter.behavior_lib._base.Sequence import Sequence
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from robowaiter.utils.bt.load import load_behavior_tree_lib
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class Robot(object):
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scene = None
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response_frequency = 1
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def __init__(self,ptml_path,behavior_lib_path):
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self.ptml_path = ptml_path
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self.behavior_lib_path = behavior_lib_path
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self.next_response_time = self.response_frequency
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self.step_num = 0
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self.last_tick_output = ""
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self.action_list = None
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def set_scene(self,scene):
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self.scene = scene
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def load_BT(self):
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self.bt = load_bt_from_ptml(self.scene, self.ptml_path,self.behavior_lib_path)
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sub_task_place_holder = find_node_by_name(self.bt.root,"SubTaskPlaceHolder")
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if sub_task_place_holder:
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sub_task_seq = sub_task_place_holder.parent
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sub_task_seq.children.pop()
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self.scene.sub_task_seq = sub_task_seq
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self.bt_visitor = StatusVisitor()
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self.bt.visitors.append(self.bt_visitor)
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def expand_sub_task_tree(self,goal):
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if self.action_list is None:
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self.action_list = self.collect_action_nodes()
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print("\n--------------------")
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print(f"首次运行行为树扩展算法，收集到{len(self.action_list)}个有效动作:")
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for a in self.action_list:
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print(a.name)
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print("--------------------\n")
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algo = BTOptExpInterface(self.action_list)
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ptml_string = algo.process(goal)
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file_name = "sub_task"
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file_path = f'./{file_name}.ptml'
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with open(file_path, 'w') as file:
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file.write(ptml_string)
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sub_task_bt = load_bt_from_ptml(self.scene, file_path,self.behavior_lib_path)
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# 加入删除子树的节点
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seq = Sequence(name="Sequence", memory=False)
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seq.add_child(sub_task_bt.root)
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del_sub_tree = DelSubTree()
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del_sub_tree.set_scene(self.scene)
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seq.add_child(del_sub_tree)
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self.scene.sub_task_seq.add_child(seq)
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print("当前行为树为：")
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print_tree_from_root(self.bt.root)
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# 获取所有action的pre,add,del列表
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def collect_action_nodes(self):
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action_list = []
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behavior_dict = load_behavior_tree_lib()
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for cls in behavior_dict["act"].values():
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if cls.can_be_expanded:
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if cls.num_args == 0:
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action_list.append(Action(name=cls.get_ins_name(),**cls.get_info()))
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if cls.num_args == 1:
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for arg in cls.valid_args:
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action_list.append(Action(name=cls.get_ins_name(arg), **cls.get_info(arg)))
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if cls.num_args > 1:
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for args in cls.valid_args:
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action_list.append(Action(name=cls.get_ins_name(*args),**cls.get_info(*args)))
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print(action_list)
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# action_list = [
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# Action(name='MakeCoffee', pre={'At(Robot,CoffeeMachine)'},
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# add={'At(Coffee,Bar)'}, del_set=set(), cost=1),
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# Action(name='MoveTo(Table)', pre={'At(Robot,Bar)'},
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# add={'At(Robot,Table)'}, del_set=set(), cost=1),
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# Action(name='ExploreEnv()', pre=set(),
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# add={'EnvExplored()'}, del_set=set(), cost=1),
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# ]
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return action_list
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def step(self):
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if self.scene.time > self.next_response_time:
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self.next_response_time += self.response_frequency
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self.step_num += 1
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self.bt.tick()
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bt_output = self.bt_visitor.output_str
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if bt_output != self.last_tick_output:
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print(f"==== time:{self.scene.time:f}s ======")
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print(bt_output)
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print("\n")
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self.last_tick_output = bt_output
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if __name__ == '__main__':
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pass |