def __init__(self,
randomness,
headless=True,
max_height=MAX_HEIGHT,
arena=4,
dir=POLICY_DIR,
eval=False,
drl="ppo"):
super().__init__()
self.randomness = randomness
self.arena = arena
self.max_height = max_height
self.dir = dir
self.eval = eval
self.drl = drl
self.sim = CubeStacking(headless=headless)
self.action_space = Box(-1, 1, shape=(2,), dtype=np.float32)
self.observation_space = Box(0, 255, shape=(84, 84, 3), dtype=np.uint8)
self.seed_val = np.random.randint(0, 100000000)
self.last_cube_xy = None
self.opponent = None # this will be set to the PPO policy later
self.subfolder = None
def __init__(self,
randomness,
headless=True,
max_height=MAX_HEIGHT,
arena=1,
fall_disabled=False,
top_down=False,
dark=False):
super().__init__()
self.randomness = randomness
self.arena = arena
self.dark = dark
self.arena_diag = np.sqrt(self.arena**2 + self.arena**2)
self.max_height = max_height
self.top_down = top_down
self.fall_disabled = fall_disabled
self._max_episode_steps = self.max_height
cam = CAM_POSES["9.5_block_close"]
four_colors = False
if self.top_down:
cam = CAM_POSES["top_down_4_block"]
four_colors = True
self.sim = CubeStacking(headless=headless,
cam=cam,
four_colors=four_colors,
dark=dark)
self.eval = eval
self.action_space = Box(-1, 1, shape=(2, ), dtype=np.float32)
self.observation_space = Box(0, 255, shape=(84, 84, 3), dtype=np.uint8)
self.last_cube_xy = None
def step(self, action):
assert len(action) == 2
action = np.clip(action, -1, 1)
if not self.rel_action:
action *= self.arena
else:
if self.last_cube_xy is None:
self.last_cube_xy = np.random.uniform(-1, 1, 2) * self.arena
action = self.last_cube_xy + action
action = CubeStacking.apply_randomization(
action, RandomPositions[self.randomness])
# cube_xy = np.random.uniform(-4, 4, 2)
if self.eval:
player = Player.Player
else:
player = None
higher = self.sim.place_cube(action, player)
self.last_cube_xy = action # <- if this is uncommented, PPO puts the cube always at -1,-1 # this should be prevented by uniform random noise
fall_player = self.sim.last_cube_fell(TEST_STEPS)
obs = self.sim.render()
if fall_player:
return obs, -1, True, {"success": False}
done = False
reward = 0
if not higher:
reward = -1
# opponent's turn
opponent_xy = self._play_opponent(obs)
opponent_xy_rand = CubeStacking.apply_randomization(
opponent_xy, RandomPositions[self.randomness])
self.last_cube_xy += opponent_xy_rand
if self.eval:
player = Player.Enemy
else:
player = None
self.sim.place_cube(self.last_cube_xy, player)
fall_opponent = self.sim.last_cube_fell(TEST_STEPS)
obs = self.sim.render()
misc = {}
if higher and fall_opponent:
reward = 1
done = True
misc["success"] = True
if self.sim.current_max_z >= MAX_HEIGHT * 2:
done = True
return obs, reward, done, misc
def __init__(self,
randomness,
headless=True,
max_height=MAX_HEIGHT,
arena=4,
dir=POLICY_DIR,
eval=False,
drl="ppo",
reward_scheme=0,
no_floor=False,
textured=False):
super().__init__()
self.randomness = randomness
self.arena = arena
self.arena_diag = np.sqrt(self.arena**2 + self.arena**2)
self.max_height = max_height
self.dir = dir
self.eval = eval
self.drl = drl
self.no_floor = no_floor
self.textured = textured
self.rewards = REWARDS[f"v{reward_scheme}"]
self.stats = {
"player_correct_stacks": 0,
"opponent_correct_stacks": 0,
"player_floor_placements": 0,
"opponent_floor_placements": 0,
"avg_tower_height": deque(maxlen=100),
"avg_win_rate": deque(maxlen=100),
"avg_cubes_placed_total": deque(maxlen=100),
"avg_player_dist_to_ref": deque(maxlen=100),
"avg_opponent_dist_to_ref": deque(maxlen=100),
"opponnet_policies": 0
}
self.stats_tmp = {}
if not self.textured:
self.sim = CubeStacking(
headless=headless, cam=CAM_POSES["9.5_block_close"])
else:
self.sim = CubeStacking(headless=headless, halfbox=True, cam=CAM_POSES["physnet"], four_colors=True)
self.action_space = Box(-1, 1, shape=(2,), dtype=np.float32)
self.observation_space = Box(0, 255, shape=(84, 84, 3), dtype=np.uint8)
self.seed_val = np.random.randint(0, 100000000)
self.ref_cube = None
self.opponent = None # this will be set to the PPO policy later
self.subfolder = None
def __init__(self,
randomness,
headless=True,
max_height=MAX_HEIGHT,
arena=4,
relative_action=False,
eval=False):
super().__init__()
self.randomness = randomness
self.arena = arena
self.rel_action = relative_action
self.max_height = max_height
self.sim = CubeStacking(headless=headless)
self.eval = eval
self.action_space = Box(-1, 1, shape=(2,), dtype=np.float32)
self.observation_space = Box(0, 255, shape=(84, 84, 3), dtype=np.uint8)
self.last_cube_xy = None
def fall_higher_obs(self, action):
assert len(action) == 2
action = np.clip(action, -1, 1)
action *= self.arena
action = CubeStacking.apply_randomization(
action, RandomPositions[self.randomness])
higher = self.sim.place_cube(action)
if not self.fall_disabled:
fall = self.sim.last_cube_fell(TEST_STEPS)
else:
fall = False
obs = self.sim.render()
return fall, higher, obs
def fall_higher_obs(self, action, player):
assert len(action) == 2
action = np.clip(action, -1, 1)
action *= self.arena
action = CubeStacking.apply_randomization(
action, RandomPositions[self.randomness])
if self.eval:
color = player
else:
color = None
higher = self.sim.place_cube(action, color)
fall = self.sim.last_cube_fell(TEST_STEPS)
obs = self.sim.render()
return fall, higher, obs
class TowerStacc(gym.Env):
def __init__(self,
randomness,
headless=True,
max_height=MAX_HEIGHT,
arena=1,
fall_disabled=False,
top_down=False,
dark=False):
super().__init__()
self.randomness = randomness
self.arena = arena
self.dark = dark
self.arena_diag = np.sqrt(self.arena**2 + self.arena**2)
self.max_height = max_height
self.top_down = top_down
self.fall_disabled = fall_disabled
self._max_episode_steps = self.max_height
cam = CAM_POSES["9.5_block_close"]
four_colors = False
if self.top_down:
cam = CAM_POSES["top_down_4_block"]
four_colors = True
self.sim = CubeStacking(headless=headless,
cam=cam,
four_colors=four_colors,
dark=dark)
self.eval = eval
self.action_space = Box(-1, 1, shape=(2, ), dtype=np.float32)
self.observation_space = Box(0, 255, shape=(84, 84, 3), dtype=np.uint8)
self.last_cube_xy = None
def step(self, action):
distance = np.linalg.norm(
self.ref_cube - np.clip(npa(action), -1, 1),
1) # the 1 at the end means L1 distance, not L2
fall, higher, obs = self.fall_higher_obs(action)
if self.max_height == 1:
# -Single- case
return obs, -distance, True, {}
# in case of self.fall_disabled, this is never true
if fall:
return obs, -1, True, {"success": False}
# end the episode immediately when the block is not on the starter
if self.top_down and not higher:
return obs, -distance, True, {"success": False}
if not higher or distance >= (2 / self.arena_diag):
return obs, -distance, False, {}
# if higher, which is the only left case
done = False
misc = {}
if self.sim.current_max_z >= self.max_height * 2:
done = True
misc["success"] = True
return obs, 1, done, misc
def fall_higher_obs(self, action):
assert len(action) == 2
action = np.clip(action, -1, 1)
action *= self.arena
action = CubeStacking.apply_randomization(
action, RandomPositions[self.randomness])
higher = self.sim.place_cube(action)
if not self.fall_disabled:
fall = self.sim.last_cube_fell(TEST_STEPS)
else:
fall = False
obs = self.sim.render()
return fall, higher, obs
def reset(self):
self.sim.reset()
cube_xy = np.random.uniform(-self.arena, self.arena, 2)
self.sim.place_cube(cube_xy, Player.Starter)
self.ref_cube = cube_xy / self.arena # to bring into [-1,1]
obs = self.sim.render()
return obs
def render(self, mode='human'):
pass
#TODO
def seed(self, seed=None):
np.random.seed(seed)
return super().seed(seed)
def close(self):
self.sim.close()
super().close()
from cube_stacking.assets import get_tex, get_urdf, TEXTURES
from cube_stacking.sim import CubeStacking
import matplotlib.pyplot as plt
import numpy as np
WID = 256
cam = {"eye": [-8, 8, 8], "lookat": [3, -3, 0]}
sim = CubeStacking(False, (WID, WID), halfbox=True, cam=cam)
# ASSETS
# texUid = sim.p0.loadTexture(get_tex("grass"))
# sim.p0.changeVisualShape(sim.floor, -1, textureUniqueId=texUid)
textures = []
for t in TEXTURES:
texUid = sim.p0.loadTexture(get_tex(t))
textures.append(texUid)
sim.place_cube([-4, 4])
sim.place_cube([-3.5, 4])
sim.place_cube([-3.7, 4])
i = 0
while True:
sim.step()
i += 1
if i == 10000:
tid = np.random.randint(0, len(textures))
sim.p0.changeVisualShape(sim.floor, -1, textureUniqueId=textures[tid])
class TwoPlayerDirectoryFullArena(gym.Env):
def __init__(self,
randomness,
headless=True,
max_height=MAX_HEIGHT,
arena=4,
dir=POLICY_DIR,
eval=False,
drl="ppo",
reward_scheme=0,
no_floor=False,
textured=False):
super().__init__()
self.randomness = randomness
self.arena = arena
self.arena_diag = np.sqrt(self.arena**2 + self.arena**2)
self.max_height = max_height
self.dir = dir
self.eval = eval
self.drl = drl
self.no_floor = no_floor
self.textured = textured
self.rewards = REWARDS[f"v{reward_scheme}"]
self.stats = {
"player_correct_stacks": 0,
"opponent_correct_stacks": 0,
"player_floor_placements": 0,
"opponent_floor_placements": 0,
"avg_tower_height": deque(maxlen=100),
"avg_win_rate": deque(maxlen=100),
"avg_cubes_placed_total": deque(maxlen=100),
"avg_player_dist_to_ref": deque(maxlen=100),
"avg_opponent_dist_to_ref": deque(maxlen=100),
"opponnet_policies": 0
}
self.stats_tmp = {}
if not self.textured:
self.sim = CubeStacking(
headless=headless, cam=CAM_POSES["9.5_block_close"])
else:
self.sim = CubeStacking(headless=headless, halfbox=True, cam=CAM_POSES["physnet"], four_colors=True)
self.action_space = Box(-1, 1, shape=(2,), dtype=np.float32)
self.observation_space = Box(0, 255, shape=(84, 84, 3), dtype=np.uint8)
self.seed_val = np.random.randint(0, 100000000)
self.ref_cube = None
self.opponent = None # this will be set to the PPO policy later
self.subfolder = None
def fall_higher_obs(self, action, player):
assert len(action) == 2
action = np.clip(action, -1, 1)
action *= self.arena
action = CubeStacking.apply_randomization(
action, RandomPositions[self.randomness])
if self.eval:
color = player
else:
color = None
higher = self.sim.place_cube(action, color)
fall = self.sim.last_cube_fell(TEST_STEPS)
obs = self.sim.render()
return fall, higher, obs
def _prep_stats(self, win):
self.stats["avg_tower_height"].append((self.sim.current_max_z + 1) / 2)
self.stats["avg_win_rate"].append(1 if win else 0)
self.stats["avg_cubes_placed_total"] = len(self.sim.cubes)
self.stats["success"] = win
def step(self, action):
# negative normalized distance to reference cube
reward_justin_case = -np.linalg.norm(self.ref_cube -
npa(action)) / self.arena_diag
self.stats["avg_player_dist_to_ref"].append(reward_justin_case)
fall_player, higher, obs = self.fall_higher_obs(action, Player.Player)
if higher:
self.stats["player_correct_stacks"] += 1
else:
self.stats["player_floor_placements"] += 1
if self.no_floor:
self._prep_stats(False)
return obs, self.rewards[Rewards.Floor], True, self.stats
if fall_player:
self._prep_stats(False)
return obs, self.rewards[Rewards.PlayerFall], True, self.stats
if self.max_height == 4 and len(self.sim.cubes) == 4:
self._prep_stats(False)
return obs, self.rewards[Rewards.Tie], True, self.stats
done = False
reward = reward_justin_case * self.rewards[Rewards.DistanceScale]
# opponent's turn
if self.eval:
time.sleep(.5)
opponent_xy = self._play_opponent(obs)
opp_dist = -np.linalg.norm(self.ref_cube -
opponent_xy) / self.arena_diag
self.stats["avg_opponent_dist_to_ref"].append(opp_dist)
fall_opponent, higher_opp, obs = self.fall_higher_obs(
opponent_xy, Player.Enemy)
if higher_opp:
self.stats["opponent_correct_stacks"] += 1
else:
self.stats["opponent_floor_placements"] += 1
if higher and fall_opponent:
self._prep_stats(True)
# "avg_tower_height": deque(100),
# "avg_win_rate": deque(100)
reward = self.rewards[Rewards.EnemyFall]
done = True
if self.sim.current_max_z >= MAX_HEIGHT * 2 - 0.01:
done = True
if self.max_height == 4 and len(self.sim.cubes) == 4:
self._prep_stats(False)
reward = self.rewards[Rewards.Tie]
done = True
return obs, reward, done, self.stats
def reset(self):
self.stats["player_correct_stacks"] = 0
self.stats["opponent_correct_stacks"] = 0
self.stats["player_floor_placements"] = 0
self.stats["opponent_floor_placements"] = 0
if "success" in self.stats:
del self.stats["success"]
self.sim.reset()
if self.textured:
self.sim.shuffle_textures()
cube_xy = np.random.uniform(-self.arena, self.arena, 2)
self.sim.place_cube(cube_xy, Player.Starter)
self.ref_cube = cube_xy / self.arena # to bring into [-1,1]
if self.subfolder is not None:
self.dir = os.path.join(self.dir, self.subfolder)
print("switched loading directory to:", self.dir)
# in order to trigger this only once
self.subfolder = None
self._init_opponent()
# coin toss if player starts or opponent
if np.random.rand() < .5:
obs = self.sim.render()
opponent_xy = self._play_opponent(obs)
_, _, obs = self.fall_higher_obs(opponent_xy, Player.Enemy)
else:
obs = self.sim.render()
return obs
def render(self, mode='human'):
pass
#TODO
def seed(self, seed=None):
self.seed = seed
np.random.seed(seed)
return super().seed(seed)
def close(self):
self.sim.close()
super().close()
def _play_opponent(self, obs):
if self.opponent is None:
return np.random.uniform(-1, 1, 2)
obs = torch.from_numpy(obs).float().to('cpu')
# obs /= 255
obs = obs.permute(2, 0, 1)
if self.drl == "ppo":
# move obs down on the stacc
# self.stacked_obs[:, :-3] = self.stacked_obs[:, 3:]
# add new obs on top of stacc
# self.stacked_obs[:, -3:] = obs
self.stacked_obs[:, :] = obs
with torch.no_grad():
_, action, _, _ = self.opponent.act(
self.stacked_obs,
self.opp_recurrent_hidden_states,
self.opp_masks,
deterministic=True)
opponent_xy = action.numpy()[0]
self.opp_masks.fill_(1.0)
elif self.drl == "td3":
opponent_xy = self.opponent.select_action(np.array(obs), "cpu")
return opponent_xy
def _init_opponent(self):
# get dire contents
# print (f"ENV: SEARCHING '{self.dir}', filtering for '-{self.drl.upper()}-', got:",os.listdir(self.dir))
policies = [
x for x in os.listdir(self.dir)
if f"-{self.drl.upper()}-" in x and ".pt" in x[-3:]
]
self.stats["opponnet_policies"] = len(policies)
if len(policies) == 0:
print("ENV: no existing policies")
self.opponent = None
return
# if there is only one policy and we've loaded it, we don't need to reload it
# if there are 3 or fewer policies, then toss a coin to see if we need to relead the policy
if self.opponent is not None and (len(policies) == 1 or
(len(policies) <= 3 and
np.random.rand() < .5)):
if self.drl == "ppo":
self.opp_masks = torch.zeros(1, 1)
# self.stacked_obs = torch.zeros(
# (1, 12, 84, 84)).to(torch.device('cpu'))
self.stacked_obs = torch.zeros(
(1, 3, 84, 84)).to(torch.device('cpu'))
elif self.drl == "td3":
pass
return
shuffle(policies)
policy_path = os.path.join(self.dir, policies[0])
# print(f"ENV: picking opponent policy '{policy_path}'")
# We need to use the same statistics for normalization as used in training
if self.drl == "ppo":
# notice the tuple
self.opponent, _ = \
torch.load(policy_path, map_location='cpu')
elif self.drl == "td3":
self.opponent = \
torch.load(policy_path, map_location='cpu')
# print("GE: USING POLICY:", policy_path)
if self.drl == "ppo":
self.opp_recurrent_hidden_states = torch.zeros(
1, self.opponent.recurrent_hidden_state_size)
self.opp_masks = torch.zeros(1, 1)
# self.stacked_obs = torch.zeros(
# (1, 12, 84, 84)).to(torch.device('cpu'))
self.stacked_obs = torch.zeros(
(1, 3, 84, 84)).to(torch.device('cpu'))
elif self.drl == "td3":
self.opponent.actor.eval()
class SinglePlayer(gym.Env):
def __init__(self,
randomness,
headless=True,
max_height=MAX_HEIGHT,
arena=4,
relative_action=False,
eval=False):
super().__init__()
self.randomness = randomness
self.arena = arena
self.rel_action = relative_action
self.max_height = max_height
self.sim = CubeStacking(headless=headless)
self.eval = eval
self.action_space = Box(-1, 1, shape=(2,), dtype=np.float32)
self.observation_space = Box(0, 255, shape=(84, 84, 3), dtype=np.uint8)
self.last_cube_xy = None
def step(self, action):
assert len(action) == 2
action = np.clip(action, -1, 1)
if not self.rel_action:
action *= self.arena
else:
action = self.last_cube_xy + action
action = CubeStacking.apply_randomization(
action, RandomPositions[self.randomness])
# cube_xy = np.random.uniform(-4, 4, 2)
if self.eval:
player = Player.Player
else:
player = None
higher = self.sim.place_cube(action, player)
# self.last_cube_xy = action # <- if this is uncommented, PPO puts the cube always at -1,-1
fall_player = self.sim.last_cube_fell(TEST_STEPS)
if fall_player:
obs = self.sim.render()
return obs, -1, True, {"success": False}
done = False
reward = 0
if not higher:
reward = -1
# opponent's turn
opponent_xy = self.last_cube_xy + np.random.uniform(-1, 1, 2)
if self.eval:
player = Player.Enemy
else:
player = None
self.sim.place_cube(opponent_xy, player)
self.last_cube_xy = opponent_xy
fall_opponent = self.sim.last_cube_fell(TEST_STEPS)
obs = self.sim.render()
misc = {}
if higher and fall_opponent:
reward = 1
done = True
misc["success"] = True
if self.sim.current_max_z >= MAX_HEIGHT * 2:
done = True
return obs, reward, done, misc
def reset(self):
self.sim.reset()
cube_xy = np.random.uniform(-self.arena, self.arena, 2)
if self.eval:
player = Player.Starter
else:
player = None
self.sim.place_cube(cube_xy, player)
self.last_cube_xy = cube_xy
obs = self.sim.render()
return obs
def render(self, mode='human'):
pass
#TODO
def seed(self, seed=None):
np.random.seed(seed)
return super().seed(seed)
def close(self):
self.sim.close()
super().close()
class TwoPlayerDirectory(gym.Env):
def __init__(self,
randomness,
headless=True,
max_height=MAX_HEIGHT,
arena=4,
dir=POLICY_DIR,
eval=False,
drl="ppo"):
super().__init__()
self.randomness = randomness
self.arena = arena
self.max_height = max_height
self.dir = dir
self.eval = eval
self.drl = drl
self.sim = CubeStacking(headless=headless)
self.action_space = Box(-1, 1, shape=(2,), dtype=np.float32)
self.observation_space = Box(0, 255, shape=(84, 84, 3), dtype=np.uint8)
self.seed_val = np.random.randint(0, 100000000)
self.last_cube_xy = None
self.opponent = None # this will be set to the PPO policy later
self.subfolder = None
def step(self, action):
assert len(action) == 2
action = np.clip(action, -1, 1)
if not self.rel_action:
action *= self.arena
else:
if self.last_cube_xy is None:
self.last_cube_xy = np.random.uniform(-1, 1, 2) * self.arena
action = self.last_cube_xy + action
action = CubeStacking.apply_randomization(
action, RandomPositions[self.randomness])
# cube_xy = np.random.uniform(-4, 4, 2)
if self.eval:
player = Player.Player
else:
player = None
higher = self.sim.place_cube(action, player)
self.last_cube_xy = action # <- if this is uncommented, PPO puts the cube always at -1,-1 # this should be prevented by uniform random noise
fall_player = self.sim.last_cube_fell(TEST_STEPS)
obs = self.sim.render()
if fall_player:
return obs, -1, True, {"success": False}
done = False
reward = 0
if not higher:
reward = -1
# opponent's turn
opponent_xy = self._play_opponent(obs)
opponent_xy_rand = CubeStacking.apply_randomization(
opponent_xy, RandomPositions[self.randomness])
self.last_cube_xy += opponent_xy_rand
if self.eval:
player = Player.Enemy
else:
player = None
self.sim.place_cube(self.last_cube_xy, player)
fall_opponent = self.sim.last_cube_fell(TEST_STEPS)
obs = self.sim.render()
misc = {}
if higher and fall_opponent:
reward = 1
done = True
misc["success"] = True
if self.sim.current_max_z >= MAX_HEIGHT * 2:
done = True
return obs, reward, done, misc
def reset(self):
self.sim.reset()
# cube_xy = np.random.uniform(-self.arena, self.arena, 2)
# self.sim.place_cube(cube_xy)
# self.last_cube_xy = cube_xy
if self.subfolder is not None:
self.dir = os.path.join(self.dir, self.subfolder)
print("switched loading directory to:", self.dir)
# in order to trigger this only once
self.subfolder = None
self._init_opponent()
# coin toss if player starts or opponent
if np.random.rand() < .5:
obs = self.sim.render()
opponent_xy = self._play_opponent(obs)
self.last_cube_xy = np.random.uniform(-1, 1, 2) * \
self.arena + opponent_xy
if self.eval:
player = Player.Enemy
else:
player = None
self.sim.place_cube(self.last_cube_xy, player)
else:
self.last_cube_xy = None
obs = self.sim.render()
return obs
def render(self, mode='human'):
pass
#TODO
def seed(self, seed=None):
self.seed = seed
np.random.seed(seed)
return super().seed(seed)
def close(self):
self.sim.close()
super().close()
def _play_opponent(self, obs):
if self.opponent is None:
opponent_xy = np.random.uniform(-1, 1, 2)
else:
obs = torch.from_numpy(obs).float().to('cpu')
obs /= 255
obs = obs.permute(2, 0, 1)
if self.drl == "ppo":
# move obs down on the stacc
self.stacked_obs[:, :-3] = self.stacked_obs[:, 3:]
# add new obs on top of stacc
self.stacked_obs[:, -3:] = obs
with torch.no_grad():
_, action, _, _ = self.opponent.act(
self.stacked_obs,
self.opp_recurrent_hidden_states,
self.opp_masks,
deterministic=True)
opponent_xy = action.numpy()[0]
elif self.drl == "td3":
opponent_xy = self.opponent.select_action(np.array(obs), "cpu")
return opponent_xy
def _init_opponent(self):
# get dire contents
policies = [x for x in os.listdir(self.dir) if f"-{self.drl}.pt" in x]
if len(policies) == 0:
# print("ENV: no existing policies")
self.opponent = None
return
# if there is only one policy and we've loaded it, we don't need to reload it
# if there are 3 or fewer policies, then toss a coin to see if we need to relead the policy
if self.opponent is not None and (len(policies) == 1 or
(len(policies) <= 3 and
np.random.rand() < .5)):
if self.drl == "ppo":
self.opp_masks = torch.zeros(1, 1)
self.stacked_obs = torch.zeros(
(1, 12, 84, 84)).to(torch.device('cpu'))
elif self.drl == "td3":
pass
return
shuffle(policies)
policy_path = os.path.join(self.dir, policies[0])
# print(f"ENV: picking opponent policy '{policy_path}'")
# We need to use the same statistics for normalization as used in training
if self.drl == "ppo":
# notice the tuple
self.opponent, _ = \
torch.load(policy_path, map_location='cpu')
elif self.drl == "td3":
self.opponent = \
torch.load(policy_path, map_location='cpu')
# print("GE: USING POLICY:", policy_path)
if self.drl == "ppo":
self.opp_recurrent_hidden_states = torch.zeros(
1, self.opponent.recurrent_hidden_state_size)
self.opp_masks = torch.zeros(1, 1)
self.stacked_obs = torch.zeros((1, 12, 84, 84)).to(torch.device('cpu'))
elif self.drl == "td3":
self.opponent.actor.eval()