Modified Prisoner's Dilemma

This repository contains the code for an online modified prisoner's dilemma game created for an experiment completed at the William and Mary Cross-cultural Cognition Lab.

Getting started

These instructions are for getting a copy of the project working locally for development and testing.

Prerequisites

1. Install Node.js.
2. Install npm
3. Install Nodemon by typing npm install -g nodemon

Type node -v and npm -v into a terminal or console to verify that you're running at least node v4.x.x and npm 3.x.x.

Getting started locally

1. Create a new project folder (named game-pd, for example) and clone this repo into it by typing the following command: git clone https://github.com/xzou/cooperation-mturk-study game-pd.

2. Navigate into the project folder by typing cd game-pd (or whatever your folder is named) and type npm install to install the npm packages listed in the package.json.

3. Type ng build --watch.

4. Open up a new terminal window or tab, and again navigate into the project directory. Type nodemon server.js You should see a message like Listening on port 8080.

5. Open up a browser, and go to the URL localhost:8080 (or whichever port was indicated in the message).

Making changes to probabilities and conditions

Navigate to the directory containing most of the game's logic by typing cd src/app/pd-game from the project's root directory. Open the file called game.service.ts to change the condition number (1, 2, or 3) and the initial probability of cooperation (between 0 and 1).