Cooperative Overcooked PCG

Official implementation of the paper, Toward Cooperative Level Generation in Multiplayer Games: A User Study in Overcooked!, which is accept to Conference on Games 2022.
The paper will be published on the conference proceedings.

Level Generation Experiment

Requirement

• Download Anaconda

conda create -n overcookedpcg python=3.8
conda activate overcookedpcg
pip3 install setuptools==65.5.0 "wheel<0.40.0" # if pip install gym==0.21.0 is not working
pip3 install -r requirements.txt

Commands

Messy (Every task is spread near-randomly in a shared kitchen. Players have to decide their strategy fully.)

python3 experiment.py --room_count 1 --pot_count 3 --onion_count 3 --dish_count 3 --outlet_count 1 --weight_resource_distance 0 --weight_task_distance 0 --seed 0

IM1 (Same tasks are grouped and spread in a shared kitchen. Easier to collide between players than Messy.)

python3 experiment.py --room_count 1 --pot_count 3 --onion_count 3 --dish_count 3 --outlet_count 1 --weight_resource_distance 0.3 --weight_task_distance 0 --seed 0

IM2 (A wall separates the players’ traffic. However, the cooperation is non-mandatory for serving a dish.)

python3 experiment.py --room_count 2 --pot_count 3 --onion_count 3 --dish_count 3 --outlet_count 2 --weight_resource_distance 0 --weight_task_distance 0 --seed 0

EX (A wall separates the players’ traffic, dividing tasks by the wall. Cooperation is mandatory.)

python3 experiment.py --room_count 2 --pot_count 3 --onion_count 3 --dish_count 3 --outlet_count 1 --weight_resource_distance 0.3 --weight_task_distance 0.9 --seed 0

Results

After the level generating experiment, the outputs (level file, images) are saved in the results directory.

room2_pot3_onion3_dish3_outlet1_fd0.2_seed0 (Directory name is determined with our experiment parameters.)
├── best_chromosome.json (The statistical result of the best level.)
├── best_level.layout (The file can be loaded on the game environment.)
├── best_original.jpg (The level image before the 'post-processing'.)
├── best_processed.jpg (The level image after the 'post-processing'.)
├── images (The images from the generating process.)
└── parameters.json (The parameters that used in the experiment.)

Code Structure Overview

.
├── GA.py (The genetic algorithm process for Section III.A)
├── LICENSE
├── README.md
├── experiment.py (The entrypoint for running a leven generation experiment)
├── fitness_function.py (The function code for Section III.A)
├── initializer.py (The population initializer in Section III.A)
├── overcooked_ai_py (Overcooked! game environment)
├── utils
└──variables

Maintainer

• In-Chang Baek

Disclaimer

All the contents in the overcooked_ai_py directory are from the original repository of HumanCompatibleAI/overcooked_ai