minor changes

examples/shields/rl/11_minigridrl.py

@@ -20,13 +20,15 @@ def shielding_env_creater(config):
     name = config.get("name", "MiniGrid-LavaCrossingS9N1-v0")
     framestack = config.get("framestack", 4)
     args = config.get("args", None)
-    args.grid_path = F"{args.grid_path}_{config.worker_index}.txt"
-    args.prism_path = F"{args.prism_path}_{config.worker_index}.prism"
+    args.grid_path = F"{args.grid_path}_{config.worker_index}_{args.prism_config}.txt"
+    args.prism_path = F"{args.prism_path}_{config.worker_index}_{args.prism_config}.prism"
     
-    shield_creator = MiniGridShieldHandler(args.grid_path, args.grid_to_prism_binary_path, args.prism_path, args.formula)
+
+    shield_creator = MiniGridShieldHandler(args.grid_path, args.grid_to_prism_binary_path, args.prism_path, args.formula, args.shield_value, args.prism_config)
     env = gym.make(name)
     env = MiniGridShieldingWrapper(env, shield_creator=shield_creator, 
                                    shield_query_creator=create_shield_query,
+                                   mask_actions=args.shielding != ShieldingConfig.Disabled,
                                    create_shield_at_reset=args.shield_creation_at_reset)
     # env = minigrid.wrappers.ImgObsWrapper(env)
     # env = ImgObsWrapper(env)
@@ -64,14 +66,17 @@ def ppo(args):
             "type": TBXLogger, 
             "logdir": create_log_dir(args)
         })    
+        # .exploration(exploration_config={"exploration_fraction": 0.1})
         .training(_enable_learner_api=False ,model={
             "custom_model": "shielding_model"
         }))
-    
+    # config.entropy_coeff =  0.05
     algo =(   
         config.build()
     )   
     
+    
+
     for i in range(args.evaluations):
         result = algo.train()
         print(pretty_print(result))

examples/shields/rl/15_train_eval_tune.py

@@ -33,8 +33,8 @@ def shielding_env_creater(config):
                                            prism_path=args.prism_path,
                                            formula=args.formula)
     
-    env = gym.make(name)
-    env = MiniGridShieldingWrapper(env, shield_creator=shield_creator, shield_query_creator=create_shield_query ,mask_actions=shielding)
+    env = gym.make(name, randomize_start=True)
+    env = MiniGridShieldingWrapper(env, shield_creator=shield_creator, shield_query_creator=create_shield_query ,mask_actions=shielding != ShieldingConfig.Disabled)
 
     env = OneHotShieldingWrapper(env,
                         config.vector_index if hasattr(config, "vector_index") else 0,

examples/shields/rl/callbacks.py

@@ -45,6 +45,14 @@ class MyCallbacks(DefaultCallbacks):
         env = base_env.get_sub_environments()[0]
         # print(env.printGrid())
 
+        if hasattr(env, "adversaries"):
+            for adversary in env.adversaries.values():
+                if adversary.cur_pos[0] == env.agent_pos[0] and adversary.cur_pos[1] == env.agent_pos[1]:
+                    print(F"Adversary ran into agent. Adversary {adversary.cur_pos}, Agent {env.agent_pos}")
+                    # assert False
+                
+         
+    
     def on_episode_end(self, *, worker: RolloutWorker, base_env: BaseEnv, policies, episode, env_index, **kwargs) -> None:
         # print(F"Epsiode end Environment: {base_env.get_sub_environments()}")
         env = base_env.get_sub_environments()[0]

examples/shields/rl/helpers.py

@@ -64,7 +64,7 @@ def extract_adversaries(env):
     return adv
 
 def create_log_dir(args):
-    return F"{args.log_dir}sh:{args.shielding}-env:{args.env}"
+    return F"{args.log_dir}sh:{args.shielding}-value:{args.shield_value}-env:{args.env}-conf:{args.prism_config}"
 
 def test_name(args):
     return F"{args.expname}"
@@ -99,7 +99,7 @@ def parse_arguments(argparse):
     # parser.add_argument("--env", help="gym environment to load", default="MiniGrid-Empty-8x8-v0")
     parser.add_argument("--env", 
                         help="gym environment to load", 
-                        default="MiniGrid-LavaCrossingS9N1-v0", 
+                        default="MiniGrid-LavaSlipperyS12-v2", 
                         choices=[
                                 "MiniGrid-Adv-8x8-v0",
                                 "MiniGrid-AdvSimple-8x8-v0",
@@ -128,14 +128,17 @@ def parse_arguments(argparse):
     parser.add_argument("--prism_path", default="grid")
     parser.add_argument("--algorithm", default="PPO", type=str.upper , choices=["PPO", "DQN"])
     parser.add_argument("--log_dir", default="../log_results/")
-    parser.add_argument("--evaluations", type=int, default=10 )
-    # parser.add_argument("--formula", default="Pmax=? [G !\"AgentIsInLavaAndNotDone\"]")  # formula_str = "Pmax=? [G ! \"AgentIsInGoalAndNotDone\"]"
-    parser.add_argument("--formula", default="Pmax=? [G !\"AgentRanIntoAdversary\"]") 
+    parser.add_argument("--evaluations", type=int, default=30 )
+    parser.add_argument("--formula", default="Pmax=? [G !\"AgentIsInLavaAndNotDone\"]")  # formula_str = "Pmax=? [G ! \"AgentIsInGoalAndNotDone\"]"
+    # parser.add_argument("--formula", default="<<Agent>> Pmax=? [G <= 4 !\"AgentRanIntoAdversary\"]")
     parser.add_argument("--workers", type=int, default=1)
     parser.add_argument("--shielding", type=ShieldingConfig, choices=list(ShieldingConfig), default=ShieldingConfig.Full)
     parser.add_argument("--steps", default=20_000, type=int)
     parser.add_argument("--expname", default="exp")
     parser.add_argument("--shield_creation_at_reset", action=argparse.BooleanOptionalAction)
+    parser.add_argument("--prism_config",  default=None)
+    parser.add_argument("--shield_value", default=0.9, type=float)
+    # parser.add_argument("--random_starts", default=1, type=int)
     args = parser.parse_args()
     
     return args

examples/shields/rl/shieldhandlers.py

@@ -27,11 +27,13 @@ class ShieldHandler(ABC):
         pass
 
 class MiniGridShieldHandler(ShieldHandler):
-    def __init__(self, grid_file, grid_to_prism_path, prism_path, formula) -> None:
+    def __init__(self, grid_file, grid_to_prism_path, prism_path, formula, shield_value=0.9 ,prism_config=None) -> None:
         self.grid_file = grid_file
         self.grid_to_prism_path = grid_to_prism_path
         self.prism_path = prism_path
         self.formula = formula
+        self.prism_config = prism_config
+        self.shield_value = shield_value
     
     def __export_grid_to_text(self, env):
         f = open(self.grid_file, "w")
@@ -40,7 +42,12 @@ class MiniGridShieldHandler(ShieldHandler):
 
     
     def __create_prism(self):
-        result = os.system(F"{self.grid_to_prism_path} -v 'Agent,Blue' -i {self.grid_file} -o {self.prism_path} -c adv_config.yaml")
+        # result = os.system(F"{self.grid_to_prism_path} -v 'Agent,Blue' -i {self.grid_file} -o {self.prism_path} -c adv_config.yaml")
+        if self.prism_config is None:
+            result = os.system(F"{self.grid_to_prism_path} -v 'Agent' -i {self.grid_file} -o {self.prism_path}")
+        else:
+            result = os.system(F"{self.grid_to_prism_path} -v 'Agent' -i {self.grid_file} -o {self.prism_path} -c {self.prism_config}")
+        # result = os.system(F"{self.grid_to_prism_path} -v 'Agent' -i {self.grid_file} -o {self.prism_path} -c adv_config.yaml")
     
         assert result == 0, "Prism file could not be generated"
     
@@ -51,7 +58,7 @@ class MiniGridShieldHandler(ShieldHandler):
     def __create_shield_dict(self):
         print(self.prism_path)
         program = stormpy.parse_prism_program(self.prism_path)
-        shield_specification = stormpy.logic.ShieldExpression(stormpy.logic.ShieldingType.PRE_SAFETY, stormpy.logic.ShieldComparison.RELATIVE, 0.9) 
+        shield_specification = stormpy.logic.ShieldExpression(stormpy.logic.ShieldingType.PRE_SAFETY, stormpy.logic.ShieldComparison.RELATIVE, self.shield_value) 
         
         formulas = stormpy.parse_properties_for_prism_program(self.formula, program)
         options = stormpy.BuilderOptions([p.raw_formula for p in formulas])
@@ -175,7 +182,7 @@ def create_shield_query(env):
     if adversaries:
         move_text = F"move=0\t& "
     
-    agent_position = F"xAgent={coordinates[0]}\t& yAgent={coordinates[1]}\t& viewAgent={view_direction}"    
+    agent_position = F"& xAgent={coordinates[0]}\t& yAgent={coordinates[1]}\t& viewAgent={view_direction}"    
     query = f"[{agent_carrying}& {''.join(agent_key_status)}!AgentDone\t{adv_status_text}{move_text}{door_status_text}{agent_position}{adv_positions_text}{key_positions_text}]"
 
     return query

examples/shields/rl/wrappers.py

@@ -102,15 +102,20 @@ class MiniGridShieldingWrapper(gym.core.Wrapper):
         self.shield = shield_creator.create_shield(env=self.env)
         self.mask_actions = mask_actions
         self.shield_query_creator = shield_query_creator
+        print(F"Shielding is {self.mask_actions}")
 
     def create_action_mask(self):
+        # print(F"{self.mask_actions} No shielding")
         if not self.mask_actions:
-            return np.array([1.0] * self.max_available_actions, dtype=np.int8)
+            # print("No shielding")
+            ret = np.array([1.0] * self.max_available_actions, dtype=np.int8)
+            # print(ret)
+            return ret
         
         cur_pos_str = self.shield_query_creator(self.env)
         # print(F"Pos string {cur_pos_str}")
         # print(F"Shield {list(self.shield.keys())[0]}")
-        # print(F"Is pos str in shield: {cur_pos_str in self.shield}")
+        # print(F"Is pos str in shield: {cur_pos_str in self.shield}, Position Str {cur_pos_str}")
         # Create the mask
         # If shield restricts action mask only valid with 1.0
         # else set all actions as valid
@@ -119,6 +124,9 @@ class MiniGridShieldingWrapper(gym.core.Wrapper):
 
         if cur_pos_str in self.shield and self.shield[cur_pos_str]:
             allowed_actions = self.shield[cur_pos_str]
+            zeroes = np.array([0.0] * len(allowed_actions), dtype=np.int8)
+            has_allowed_actions = False
+
             for allowed_action in allowed_actions:
                 index =  get_action_index_mapping(allowed_action.labels) # Allowed_action is a set
                 if index is None:
@@ -129,8 +137,14 @@ class MiniGridShieldingWrapper(gym.core.Wrapper):
                 allowed =  random.choices([0.0, 1.0], weights=(1 - allowed_action.prob, allowed_action.prob))[0]
                 if allowed_action.prob == 0 and allowed:
                     assert False
+                if allowed:
+                    has_allowed_actions = True
                 mask[index] = allowed               
             
+            # if not has_allowed_actions:
+            #     print(F"No action allowed for pos string {cur_pos_str}")
+            #     assert(False)
+
         else:
             for index, x in enumerate(mask):
                 mask[index] = 1.0
@@ -186,6 +200,7 @@ class MiniGridSbShieldingWrapper(gym.core.Wrapper):
         self.shield_creator = shield_creator
         self.mask_actions = mask_actions
         self.shield_query_creator = shield_query_creator
+        print(F"Shielding is {self.mask_actions}")
 
     def create_action_mask(self):
         if not self.mask_actions: