LICENSE.md

The quadplay✜'s influences include Atari 2600, Commodore VIC-20, APL, Python, PICO-8, Shadertoy, Arduboy, and its predecessors, codeheart.js and the nano JAMMER.

The quadplay✜ IDE and compiler are copyright 2019 Morgan McGuire, including:

• index.html
• quadplay.css
• pyxscript-compiler.js
• quadplay-runtime.js
• quadplay-host-websw.js
• quadplay-ide.js
• quadplay-font.js
• quadplay-load.js

and excluding the content described below. The IDE and compiler are licensed under the LGPL 3.0, but may be relicensed in the future.

The Vim mode is by Stephan Steinbach.

The VS Code extension is by Josef Spjut.

GIF support via gif.js (c) 2013 Johan Nordberg, used under the MIT license. It includes code by Kevin Weiner, Thibault Imbert, and Anthony Dekker.

QR code support via qrcodejs (c) 2012 @davidshimjs used under the MIT license.

The random number generator is derived from an implementation of xorshift (c) 2014 Andreas Madsen and Emil Bay used under the MIT license.

The code editor for the quadplay✜ IDE is ace.js used under the BSD license.

The compiler uses vectorify.js (c) 2018 Morgan McGuire under the MIT license, recast (c) 2012 Ben Newman under the MIT license, and estraverse (c) 2012-2016 Yusuke Suzuki under the BSD 2-clause license.

LoadManager.js is (c) 2018 Morgan McGuire, BSD-2-Clause license.

js-yaml is (C) 2011-2015 by Vitaly Puzrin, MIT license.

dagre.js is (C) 2012-2014 Chris Pettitt, MIT license.

The boot screen font used in the emulator is https://int10h.org/oldschool-pc-fonts copyright 2016 Int10h, used under the CC-BY 4.0 license. It is based on the Amstrad PC1512 BIOS font.

All built-in assets are Creative Commons licensed have complete license and copyright information in the "license" property of the corresponding JSON file.