Algodoo

A simple open-bolt mechanism, put together to tinker around with gunpowder-based ammunition. Feel free to tinker yourself, and let me know about your improvements. Please note that the scene needs to run at 1200Hz for things to work as intended. I built it at 1200Hz and 0.1 sim speed on a 5-year-old i3 laptop.

The "powder" is ignited when it is touched by something with reflectiveness = 2.0 , as you will notice is the case with the "firing pin". A bit of a cheat, I know. Since the bullets have a diameter of 43.75cm and the case is 100cm long, I named this calibre "44x100", or, if you will, "44 kwik". It has most likely already occured to many of you, but I didn't realize until now that for gun builds, a 40:1 scale makes for roughly 1m per inch, so I guess you could call it ".44 kwik", or "11x25mm". If you end up using it in your own projects, be a pal and call it "44 kwik". That's all the phame I crave.

There is one variable used in the gunpowder thyme code:

scene.my.burntime = 0.65

It merely sets the timeToLive on each grain of powder after being ignited. Too short, and the gun won't cycle or casings eject, and too long and the action will get clogged.

Also note that there two almost invisible blocks that keep the pressure contained in the chamber and barrel, and three around the ejection port, that make sure empty casings don't fall back into the action, and are also supposed to move them to the back, but for some reason zDepth won't set to zero for me.

SHare and enjoy!