Skydiving simulation with Perl
FREE FALL
Computer game programmers apply physical formulas and special tricks to create realistic animations. Simple DirectMedia Layer (SDL), which is available as a Perl wrapper, provides a powerful framework for creating simple 2D worlds with just a couple of lines of code.
After ripping an old VHS cassette of my tandem skydive, posting it on YouTube, and mailing the link [2]to a couple of guys at work, a debate about the physical laws that apply during a parachute jump ensued.
In a simplified model that ignores crosswinds, the jumper starts with a vertical speed of vy = 0 and immediately starts to accelerate because of gravity. Drag, which grows proportionally with the skydiver’s downward speed, counteracts gravity. Depending on the skydiver’s weight and proportions, a balance of forces occurs at around 180 km/ h, and the downward speed becomes constant. At this point, skydivers feel like they are floating in space, and this state continues until the chute opens, which feels like they are being pulled upward with a rope.
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Working Exploit for a Linux Kernel Flaw Made Public
Even before a bug received its CVE identifier or an upstream fix, the local privilege escalation vulnerability exploit found its way into the wild.
-
r/opensource Bans AI-Assisted and AI-Related Projects
The de facto subreddit for all things open source has not only banned AI-related projects but also users who "don't speak English."
-
Bottlenecks Discovered by Meta Engineers Lead to Scalability Improvements
Thanks to a small group of engineers at Meta, the Linux kernel module kernfs has been improved, which has led to some serious gains.
-
PwnEscape Poses VM Vulnerability
A guest-to-host escape flaw in Linux KVM, named PwnEscape, might be yet another means of attacking Linux.
-
Linux Mint 27 Set for a Christmas Release
The developers behind Linux Mint have announced a Christmas release, and it looks like Santa's sack will be brimming with features.
-
Is Linus Torvalds Vibe Coding?
The creator of Linux has added AI into his process for Linux kernel development, and it's more than just for debugging.
-
openKylin 3.0 Released with Expanded AI Integration
The latest release features a pre-installed AI agent to help perform tasks.
-
DigitalOcean Ends Open Source Credits Program
In a change that has surprised many open source developers, DigitalOcean has decided to sunset its Open Source Credits Program.
-
Office 365 Available for Testing on Linux via Bottles
Linux users can now test the official Office 365, thanks to Mirko Brombin's work on Bottles.
-
Dutch Government Turns to Open Source for Digital Sovereignty
Following in the footsteps of other European countries, the Netherlands is looking to increase its sovereign digital infrastructure with open source software.