planet orbits

[sciophyte]

hey all,

I wrote a simple orbit simulator out of boredom, figured I'd share it.

written in vb.net 2008



you can get the code here: http://www.frostbytecafe.com/game/planetsim.rar

planetengine class contains these functions:

Init()
Unload()
Render()
AddBody (BodyName, BodyRadius, BodySpinSpeed, AxisTilt, TextureName, NormalTextureName)

• BodyName:string - planet name
• BodyRadius:single - planet radius
• BodySpinSpeed:single - the number of hours it takes for a full spin
• AxisTilt:single - the axial tilt of the planet (this should be a vector, only works on x axis rotation in this)
• TextureName:string - texture for planet
• NormalTextureName:string - normal texture for planet

SetBodyOrbit(OrbitingPlanetName, ParentToOrbit, EllipsoidScale, OrbitSpeed, OrbitRadius,
OrbitTilt)

• OrbitingPlanetName:string - name of plant to make orbit
• ParentToOrbit:string - the parent that will be orbited around
• EllipsoidScale:vector - 1,1,1 is a circular orbit
• OrbitSpeed:single - number of hours it takes to complete 1 orbit
• OrbitRadius:single - distance from parent
• OrbitTilt:vector - rotational values for rotating the orbit plane

Update(SimSpeed)


the orbit tilt is kind of hacky, but i'm poor at math 

EDIT: all images courtesy of google images, normals produced in crazybump

[cristims]

nice!