remove create_func....

problem/rl_env/gymnax_env.py

@@ -0,0 +1,42 @@
+from dataclasses import dataclass
+from typing import Callable
+
+import jax
+import jax.numpy as jnp
+import gymnax
+
+from core import State
+from .rl_env import RLEnv, RLEnvConfig
+
+
+@dataclass(frozen=True)
+class GymNaxConfig(RLEnvConfig):
+    env_name: str = "CartPole-v1"
+
+    def __post_init__(self):
+        assert self.env_name in gymnax.registered_envs, f"Env {self.env_name} not registered"
+
+
+class GymNaxEnv(RLEnv):
+
+    def __init__(self, config: GymNaxConfig = GymNaxConfig()):
+        super().__init__(config)
+        self.config = config
+        self.env, self.env_params = gymnax.make(config.env_name)
+
+    def env_step(self, randkey, env_state, action):
+        return self.env.step(randkey, env_state, action, self.env_params)
+
+    def env_reset(self, randkey):
+        return self.env.reset(randkey, self.env_params)
+
+    @property
+    def input_shape(self):
+        return self.env.observation_space(self.env_params).shape
+
+    @property
+    def output_shape(self):
+        return self.env.action_space(self.env_params).shape
+
+    def show(self, randkey, state: State, act_func: Callable, params):
+        raise NotImplementedError("GymNax render must rely on gym 0.19.0(old version).")