simple orbit propagator i made in a week, initially to test my line-renderer that i had made the week before.

features:

• earth-moon system
• non-spherical lunar gravity
• static rk4 integration
  
• paths and frames of reference
• keplerian orbital plane
• controllable spacecraft

i didnt want to bother with compiling godot, so there is only single precision floats. therefore i recommend keeping the step size above 5, and keeping within about 1000Mm of the earth.

makes heavy use of vulkan compute shaders. may not work on older hardware.

ISSUE: there might be some leaking issues with my compute dispatchers. godot makes log files for games, so make sure to check \appdata\roaming\spacegame\logs\ if you've had the game running for a bit.

the lunar gravity model is GRGM1200A, here up to degree 120. the shader used to compute the gravity map is something i wrote a couple months ago.