ai.Splendor

Reinforcement learning agent for the board game Splendor, built with a custom Gymnasium environment and a PyTorch actor-critic network trained via self-play.

Structure

ai.Splendor/
├── game/       # Splendor game engine + Gymnasium environment (splendor-game)
└── ai/         # PyTorch model, agent, and training loop (splendor-ai)

Setup

Requires uv and Python ≥ 3.10.

Install everything

uv sync

Installs both splendor-game and splendor-ai into a shared .venv at the repo root.

Install only one package

# game engine only (no torch)
cd game && uv sync

# AI package only (includes splendor-game)
cd ai && uv sync

Run a specific package's scripts

# from the repo root
uv run --package splendor-ai python -m ai.train

# or from inside ai/
cd ai && uv run python -m ai.train

Training

uv run python -m ai.train
# or via the entry point:
uv run splendor-train --episodes 5000 --lr 3e-4 --checkpoint-dir checkpoints

Checkpoints are saved to checkpoints/ every 500 episodes by default.

Quick environment check

from splendor.env import SplendorEnv

env = SplendorEnv(num_players=2)
obs, info = env.reset(seed=42)
print(obs.shape)           # (184,)
print(len(info["legal_actions"]))