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from typing import Any, Self | |
from loguru import logger | |
from src.typing import AgentType, CpuConfig, RolloutPolicy | |
from litrl import make_multiagent | |
from litrl.algo.mcts.agent import MCTSAgent | |
from litrl.algo.mcts.mcts_config import MCTSConfigBuilder | |
from litrl.algo.mcts.rollout import VanillaRollout | |
from litrl.common.agent import Agent, RandomMultiAgent | |
from litrl.env.connect_four import ConnectFour | |
from litrl.model.sac.multi_agent import OnnxSacDeterministicMultiAgent | |
class AppState: | |
_instance: Self | None = None | |
env: ConnectFour | |
cpu_config: CpuConfig | |
agent: Agent[Any, int] | |
def setup(self) -> None: | |
logger.debug("AppState setup called") | |
self.env = make_multiagent(id="connect_four", render_mode="rgb_array") | |
self.env.reset(seed=123) | |
self.cpu_config: CpuConfig = CpuConfig(agent_type=AgentType.RANDOM) | |
self.set_agent() # TODO in properties setter. | |
self.agent: Agent[Any, int] | |
def __new__(cls) -> "AppState": | |
if cls._instance is None: | |
cls._instance = super().__new__(cls) | |
cls._instance.setup() | |
return cls._instance | |
def set_config(self, cpu_config: CpuConfig) -> None: | |
if cpu_config != self.cpu_config: | |
self.cpu_config = cpu_config | |
self.set_agent() | |
def create_rollout(self) -> Agent[Any, Any]: | |
match self.cpu_config.rollout_policy: | |
case None: | |
return RandomMultiAgent() | |
case RolloutPolicy.SAC: | |
return OnnxSacDeterministicMultiAgent() | |
case RolloutPolicy.RANDOM: | |
return RandomMultiAgent() | |
case _: | |
msg = f"cpu_config.rollout_policy: {self.cpu_config.rollout_policy}" | |
raise NotImplementedError(msg) | |
def set_agent(self) -> None: | |
match self.cpu_config.agent_type: | |
case AgentType.MCTS: | |
rollout_agent = self.create_rollout() | |
# fmt: off | |
mcts_config = ( | |
MCTSConfigBuilder() | |
.set_simulations(self.cpu_config.simulations or 50) | |
.set_rollout_strategy(VanillaRollout(rollout_agent=rollout_agent)) | |
).build() | |
# fmt: on | |
self.agent = MCTSAgent(cfg=mcts_config) | |
case AgentType.RANDOM: | |
self.agent = RandomMultiAgent() | |
case AgentType.SAC: | |
self.agent = OnnxSacDeterministicMultiAgent() # type: ignore[assignment] # TODO | |
case _: | |
msg = f"cpu_config.name: {self.cpu_config.agent_type}" | |
raise NotImplementedError(msg) | |
def get_action(self) -> int: | |
return self.agent.get_action(env=self.env) | |