A preact module for a game clock, supporting an arbitrary number of players.

View the live demo by clicking here.

Note: the interface options for the clock are only part of the demo, not the module itself. Also, the images inside each player's clock are part of the demo css, not a module option.

You can also just use the demo for your personal needs (if you aren't attaching the module to a program), and save your own timing presets to a text file by copy/pasting the state with the demo's import/export feature.

Support for various timing modes:

• Go's byo-yomi / (Canadian) overtime
• Chess' Delay (Bronstein) Timing
• Chess' Increment (Fischer) Timing (before & after)
• Hourglass
• Word game timing (negative time counting)
• Absolute (egg-timer)

Customizable display:

• Display elapsed or remaining time/periods/phase/moves
• Customizable display text & information (player name, time expired text, periods, etc.)
• Fractional seconds customization (0-4 decimal places, update interval)

Adjustable clock:

• Pause the clock first, and then adjust the current player clock.
• Also, change the active player by pausing and making a move.

Callback events, including:

• On last 10 seconds (of current period/phase)
• Time Expired
• Made move
• Pause, Resume, Reset, Init

CSS classes:

• Style the game clock or each individual player clock
• Style each player clock according to the clock state: expired, running, paused, init.

Please read the docs by clicking here.

Pre-requisites: You need Node.js, npm, and preact installed to build the demo.

Then download this demo with git and use npm to install the dependencies:

$ git clone https://github.com/dbosst/gameclock
$ cd gameclock
$ npm install

Then to create the bundle, you can either build the development demo once:

$ npm run build-demo

Or use the watch-demo script for development:

$ npm run watch-demo

To view the built demo, open the local gameclock/demo/index.html file in your web browser. If you have a javascript blocking plug-in, such as No-Script, make sure to allow for it.