2D Faux gravity. Help

Hello, I'm wanting to make a script for walking on planets in 2d with gravity like it. Example http://www.adiosgame.com/

Please help me on how I could achieve this in c#.

 

At a glance there's a few things going on:

1. gravity is angled for each actor to point to a central point (which planet they're on)

2. actors rotate to align to the ground beneath them

3. the camera is rotated to follow a given actor

You can do #1 by taking the difference between the planet and the actor and using that vector as the basis for gravity (normalize it first, then multiply by the desired gravity)

You can do #2 by using rotating your character so it aligns with the delta calculated in step #1 above.

You can achieve #3 trivially by parenting the camera to whatever actor is the main player actor.

That should get you started anyway. Let us know how it goes!