Basic 2D Game Engine

Written for AP Physics. Press [W] to jump, and try not to run into anything or fall off the map. If you die, you'll have to refresh the page. I didn't really have time to finish the game mechanics (i.e. respawn, score, and infinite world generation)

Visit online at: https://physics-game.onrender.com/ (easiest).

Code Layout

The main physics calculations are done in: engine/Physics.ts, engine/Force.ts, engine/PhysicalObject.ts, and engine/Vector.ts

Features

• Gravity, Friction, and Air Resistance
• Full force-based physics with free-body diagrams
• Poorly written auto-generated random terrain
• Animated sprites and parallax backgrounds + Death animations
• Annoying toggleable chiptune music and non-negotiable sound effects
• Event-based game programming

Basically everything is written from the ground up. This was terrible to write and I regret all of it.

Controls

• [W] = [Jump]

• [L] = Disable Music

• [F3] = Show Forces (free-body diagram)

• [F11] = Fullscreen

Attribution

Code that is borrowed is noted in comments. Audio files are borrowed from: https://github.com/hawkthorne/hawkthorne-journey and licensed under CC BY-NC 3.0. Includes all .ogg, and .wav files. Textures are from: https://jesse-m.itch.io/jungle-pack

Assorted Notes

This used to have very, very basic multiplayer and some other bells and whistles, but I removed them since they weren't useful for this project. This started as a 2D RPG engine with no physics; I basically took my tile rendering code from a few months ago, rewrote almost all of it, and used it to render a physics simulation. Originally, there were multiple surfaces with different coefficients of friction, but I couldn't find a good texture pack with ice and stuff like that so I just made one surface type for the demo; it's pretty trivial to change that though. This was written with the intent that one could write an entire real game on top, but for now it's really just a demonstration of some of the library functionality.

I've written a cookie into the game so that if you turn on the free-body diagram option and refresh the page, it'll stay on. That should help in case you find yourself dying a lot in the game.

How to run locally

1. Download / Install npm and node.js from here: https://nodejs.org/en/download/

2. Press [WIN + R] and type cmd, then press enter

3. Type git clone https://github.com/themichaelcaruso/physics, then press enter

4. Type npm install and press enter to install dependencies, then type npm start and press enter to run the game.

5. Go to http://localhost:5000 to try out the game.