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from sys import platform | |
from typing import Optional, Any, List | |
from mlagents_envs.environment import UnityEnvironment | |
from mlagents_envs.base_env import BaseEnv | |
from mlagents_envs.registry.binary_utils import get_local_binary_path | |
from mlagents_envs.registry.base_registry_entry import BaseRegistryEntry | |
class RemoteRegistryEntry(BaseRegistryEntry): | |
def __init__( | |
self, | |
identifier: str, | |
expected_reward: Optional[float], | |
description: Optional[str], | |
linux_url: Optional[str], | |
darwin_url: Optional[str], | |
win_url: Optional[str], | |
additional_args: Optional[List[str]] = None, | |
tmp_dir: Optional[str] = None, | |
): | |
""" | |
A RemoteRegistryEntry is an implementation of BaseRegistryEntry that uses a | |
Unity executable downloaded from the internet to launch a UnityEnvironment. | |
__Note__: The url provided must be a link to a `.zip` file containing a single | |
compressed folder with the executable inside. There can only be one executable | |
in the folder and it must be at the root of the folder. | |
:param identifier: The name of the Unity Environment. | |
:param expected_reward: The cumulative reward that an Agent must receive | |
for the task to be considered solved. | |
:param description: A description of the Unity Environment. Contains human | |
readable information about potential special arguments that the make method can | |
take as well as information regarding the observation, reward, actions, | |
behaviors and number of agents in the Environment. | |
:param linux_url: The url of the Unity executable for the Linux platform | |
:param darwin_url: The url of the Unity executable for the OSX platform | |
:param win_url: The url of the Unity executable for the Windows platform | |
""" | |
super().__init__(identifier, expected_reward, description) | |
self._linux_url = linux_url | |
self._darwin_url = darwin_url | |
self._win_url = win_url | |
self._add_args = additional_args | |
self._tmp_dir_override = tmp_dir | |
def make(self, **kwargs: Any) -> BaseEnv: | |
""" | |
Returns the UnityEnvironment that corresponds to the Unity executable found at | |
the provided url. The arguments passed to this method will be passed to the | |
constructor of the UnityEnvironment (except for the file_name argument) | |
""" | |
url = None | |
if platform == "linux" or platform == "linux2": | |
url = self._linux_url | |
if platform == "darwin": | |
url = self._darwin_url | |
if platform == "win32": | |
url = self._win_url | |
if url is None: | |
raise FileNotFoundError( | |
f"The entry {self.identifier} does not contain a valid url for this " | |
"platform" | |
) | |
path = get_local_binary_path( | |
self.identifier, url, tmp_dir=self._tmp_dir_override | |
) | |
if "file_name" in kwargs: | |
kwargs.pop("file_name") | |
args: List[str] = [] | |
if "additional_args" in kwargs: | |
if kwargs["additional_args"] is not None: | |
args += kwargs["additional_args"] | |
if self._add_args is not None: | |
args += self._add_args | |
kwargs["additional_args"] = args | |
return UnityEnvironment(file_name=path, **kwargs) | |