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54 行
1.9 KiB
54 行
1.9 KiB
from mlagents_envs.side_channel import SideChannel, IncomingMessage, OutgoingMessage
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from mlagents_envs.exception import UnityCommunicationException
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import uuid
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from enum import IntEnum
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from typing import List
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class EnvironmentParametersChannel(SideChannel):
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"""
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This is the SideChannel for sending environment parameters to Unity.
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You can send parameters to an environment with the command
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set_float_parameter.
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"""
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class EnvironmentDataTypes(IntEnum):
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FLOAT = 0
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SAMPLER = 1
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def __init__(self) -> None:
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channel_id = uuid.UUID(("534c891e-810f-11ea-a9d0-822485860400"))
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super().__init__(channel_id)
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def on_message_received(self, msg: IncomingMessage) -> None:
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raise UnityCommunicationException(
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"The EnvironmentParametersChannel received a message from Unity, "
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+ "this should not have happend."
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)
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def set_float_parameter(self, key: str, value: float) -> None:
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"""
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Sets a float environment parameter in the Unity Environment.
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:param key: The string identifier of the parameter.
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:param value: The float value of the parameter.
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"""
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msg = OutgoingMessage()
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msg.write_string(key)
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msg.write_int32(self.EnvironmentDataTypes.FLOAT)
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msg.write_float32(value)
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super().queue_message_to_send(msg)
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def set_sampler_parameters(self, key: str, values: List[float]) -> None:
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"""
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Sets a float encoding of an environment parameter sampler.
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:param key: The string identifier of the parameter.
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:param values: The float encoding of the sampler.
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"""
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msg = OutgoingMessage()
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msg.write_string(key)
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msg.write_int32(self.EnvironmentDataTypes.SAMPLER)
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# length of list
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msg.write_int32(len(values))
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for value in values:
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msg.write_float32(value)
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super().queue_message_to_send(msg)
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