I want to make game similar to Space Tanks after finishing my current project. Space tanks is pretty much tanks/scorched earth type of game except you are in space and have to consider gravity fields of different celestial bodies (mainly planets though). Another good example of such game is Slingshot game for GNU/Linux.
The problem is that I am unable to find out some physics algorithm that would allow for more advanced gravity than moving objects down/up or on either of sides. Build-in physics seems to be standard Box2D which doesn’t have such functionality to my knowledge.