Here is a small toy program I used to start learning the Go language. It simulatesorbital motion of small bodies around a large central body. It uses the pixel 2Dgame library to visualize the simulation. The program has three modes:
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- Random mode where you can generate a bunch of random planetoids around a central body in circular orbits
- Random mode with planetoids all of which have moonlets
- Simulation of the inner solar system
This program is a toy only. I made no effort to ensure total system energy ispreserved and the integration method used is step wise addition at 1 secondintervals. In an effort to make the sim scale a bit better, the accelerationon each of the bodies in the sim is calculated in a goroutine. My hope was toturn the O(n^2) performance into something a bit better. Thanks to the rawspeed of the Go language, this sim runs pretty fast. Champions of rome mac os. It can simulate 1 week ofworld time for 41 bodies in a few seconds (YMMV).
/cdn.vox-cdn.com/uploads/chorus_asset/file/22046807/Screen_Shot_2020_11_16_at_2.13.01_PM.png "Planet Run (PF Redot) Mac OS")
Unaware mac os. To try this out, check out the code from the git repo at N-Body Problem Simulation Code Repository.Then follow these steps:
Unaware mac os. To try this out, check out the code from the git repo at N-Body Problem Simulation Code Repository.Then follow these steps:
Planet Run (pf Redot) Mac Os Download
- cd ./nbody-go
- Install pre-requisites for faiface/pixel go 2D graphics library -- I've run this on Mac OS X and Linux, tried to run it on a Raspberry Pi 4, but the library support is lacking.
- go build
- ./nbody-go random -d 512x512
