Mastermind

Setup

1. Install dependencies in /backend and /frontend with npm install.
2. Compile the project in /backend and /frontend with npm run build.
3. Copy .env.example to .env.
4. Download the sipgate Softphone from here.
5. Login with your sipgate account.
6. Choose a phone number from your sipgate account and enter it as NUMBER_TO_CALL in the .env.
7. Select the device, that is connected to the choosen phone number, in the dropdown of the softphone.
8. Create an ngrok account on ngrok.com
9. Copy your authtoken from ngrok and enter it's value as NGROK_AUTH_TOKEN in the .env.
10. Create a Personal-Access-Token on app.sipgate.com with the two scopes:
    • settings:sipgateio:read
    • settings:sipgateio:write
11. Enter the token as PAT_TOKEN and the token ID as PAT_TOKEN_ID into the .env.

Start

1. Start the project with npm start.
2. Start the sipgate Softphone and ensure that the correct phone is selected (see Setup).
3. Press Enter in the console once the softphone is running and configured.

The Game

Usage

To connect to the game, the player must call the number shown on the screen and then use the numberpad to control the game. After reading the instructions, the player must first press a key to start the game.

Rules

Mastermind is about guessing a code, consisting of four different digits, in up to ten tries. After guessing a code, the game gives you two numbers as feedback:

• the number in the square brackets is the amount of digits that are at the correct position
• the number in the parentheses is the amount of digits that are at the wrong position, but do appear in the code

These two pieces of information will help you to improve your next guess. You will get more points, the fewer guesses you need and the faster you complete the game.

The two red arrows indicate in which row and column you are currently located. Press a digit from 1 to 6 to enter it at the present location. By clicking * the arrow moves to the right until it wraps around to the first column. You can confirm your input with the # button.

Common Issues

Can't start because TypeError: Cannot read properties of undefined (reading 'body')

This issue occurs, when another ngrok instance is running. To fix this, you need to make sure that no other instance of Mastermind is running, by killing all processes on the ports 3000, 3001 and 3002. Enter the command sudo lsof -iTCP -sTCP:LISTEN and look for programs that listen on the ports listed above in the NAME column. Kill a process by its PID using sudo kill <PID>.

Allow a player to call a second time

Since every players phone number is listed in a database, you need to remove the corresponding entry from the database to allow a caller to play again.

1. Open the databse (for example with SQLitebrowser)
2. Select the games table
3. Find and delete the row that corresponds to the phone number
4. Write the changes you've made