I'm just not getting into Corona, I've been oscillation between iTGB, Cocos2d and this, so I'm trying to figure out some mechanics.

First, I'd like to make a Skeleton for animations. There have been a few topics on this, which I've looked at and think I'm good with.

My question though is this: Is there a way to toggle physics on or off for an object or group of objects? IE. I want to animate a movement sequence manually, then turn on physics and they "body" falls over, then turn it off, and animate it getting back up.

Second, Is there a way to have multiple gravity sources? Say we're in space and there is the Earth and Moon can I have both of those objects emit/effect gravity using the built in physics?

The best way I know of to turn physics on/off for an object is to use a joint associated with the object. The joint an be added or removed programmatically as needed. I had a similar situation where I wanted collisions to selectively occur, and changed the attribute object.isSensor to either true or false.

Gravity is a global setting, but adjusting the density of specific objects will impact the effects of gravity and give you the same net effect you are seeking.

Perhaps others have better ideas.

-David