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62 行
2.2 KiB
62 行
2.2 KiB
from mlagents_envs.side_channel import SideChannel, IncomingMessage, OutgoingMessage
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import uuid
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from typing import Dict, Optional, List
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class FloatPropertiesChannel(SideChannel):
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"""
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This is the SideChannel for float properties shared with Unity.
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You can modify the float properties of an environment with the commands
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set_property, get_property and list_properties.
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"""
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def __init__(self, channel_id: uuid.UUID = None) -> None:
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self._float_properties: Dict[str, float] = {}
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if channel_id is None:
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channel_id = uuid.UUID(("60ccf7d0-4f7e-11ea-b238-784f4387d1f7"))
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super().__init__(channel_id)
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def on_message_received(self, msg: IncomingMessage) -> None:
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"""
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Is called by the environment to the side channel. Can be called
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multiple times per step if multiple messages are meant for that
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SideChannel.
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"""
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k = msg.read_string()
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v = msg.read_float32()
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self._float_properties[k] = v
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def set_property(self, key: str, value: float) -> None:
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"""
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Sets a property in the Unity Environment.
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:param key: The string identifier of the property.
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:param value: The float value of the property.
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"""
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self._float_properties[key] = value
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msg = OutgoingMessage()
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msg.write_string(key)
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msg.write_float32(value)
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super().queue_message_to_send(msg)
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def get_property(self, key: str) -> Optional[float]:
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"""
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Gets a property in the Unity Environment. If the property was not
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found, will return None.
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:param key: The string identifier of the property.
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:return: The float value of the property or None.
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"""
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return self._float_properties.get(key)
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def list_properties(self) -> List[str]:
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"""
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Returns a list of all the string identifiers of the properties
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currently present in the Unity Environment.
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"""
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return list(self._float_properties.keys())
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def get_property_dict_copy(self) -> Dict[str, float]:
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"""
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Returns a copy of the float properties.
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:return:
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"""
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return dict(self._float_properties)
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