This is a test/demo/experiment of a very simple physics/collision engine, written in ECMAScript and using HTML5 Canvas'.
The demo is available on GitHub Pages: https://mfederczuk.github.io/physics-engine-demo
Currently there is only a box with a few entities randomly moving around in it and one entity (the "subject")
that is (by default) controlled by the user.
Some of the engine's configuration can be adjusted live. Playing around with the console is encouraged. For example:
// gravity can be dynamically changed:
state.gravity.reverse() // reverses gravity, the entities will float upwards
state.gravity.changeDirection(45) // changes gravity to be 45° (0° is downwards), the entities will be pulled to the lower right corner
state.gravity.changeMagnitude(5) // changes strength of gravity (default is 0.5), jumping won't gain as much height
state.subject.noclip = true // turns of gravity and bounds collision for the subject
state.subject.controller = new RandomController() // subject will begin to move randomly
state.subject.controller = new WebKeyboardController(window) // you're back in control of the subject
state.subject.velocity.setXdYd(75, -75) // violently fling the subject into the upper right corner
state.subject.jumpSpeed = 50 // give the subject mad hops
state.subject.manualMovementSpeed = 50 // make the subject 2 fast 4 uThis engine is licensed under both the Mozilla Public License 2.0 AND the
Apache License 2.0.
For more information about copying and licensing, see the COPYING.txt file.
Special thanks to Nicolae "Xelu" Berbece for the keyboard button icons, which are licensed under CC0 and can be found here: https://thoseawesomeguys.com/prompts