smb-ram-ppo-play.ipynb

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  {
   "cell_type": "markdown",
   "id": "432e666c",
   "metadata": {},
   "source": [
    "# Load and test a pre-trained model"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "c75b7744",
   "metadata": {},
   "outputs": [],
   "source": [
    "# import dependencies\n",
    "import gym \n",
    "from stable_baselines3 import PPO\n",
    "from stable_baselines3.common.vec_env import DummyVecEnv, VecEnv\n",
    "from stable_baselines3.common.evaluation import evaluate_policy\n",
    "\n",
    "import os\n",
    "\n",
    "from gym_utils import SMBRamWrapper, load_smb_env, SMB"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "4db9f9e8",
   "metadata": {},
   "outputs": [],
   "source": [
    "# Select a pre-trained model\n",
    "MODEL_DIR = './models'\n",
    "\n",
    "# obs = 4 frames\n",
    "crop_dim = [0, 16, 0, 13]\n",
    "n_stack = 4\n",
    "n_skip = 4\n",
    "MODEL_NAME = 'pre-trained-1'\n",
    "\n",
    "# obs = 1 frames\n",
    "#crop_dim = [0, 16, 0, 13]\n",
    "#n_stack = 1\n",
    "#n_skip = 1\n",
    "#MODEL_NAME = 'pre-trained-2'\n",
    "\n",
    "\n",
    "# obs = 2 frames\n",
    "#crop_dim = [0, 16, 0, 13]\n",
    "#n_stack = 2\n",
    "#n_skip = 4\n",
    "#MODEL_NAME = 'pre-trained-3'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "3efda0ca",
   "metadata": {},
   "outputs": [],
   "source": [
    "# load env and model\n",
    "env_wrap = load_smb_env('SuperMarioBros-1-1-v0', crop_dim, n_stack, n_skip)\n",
    "model = PPO.load(os.path.join(MODEL_DIR, MODEL_NAME), env=env_wrap)\n",
    "smb = SMB(env_wrap, model)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "52270ed2",
   "metadata": {},
   "outputs": [],
   "source": [
    "smb.play(episodes=1, deterministic=True, render=True, return_eval=True)"
   ]
  }
 ],
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