SOLVED: setFixedRotation(false) seems to be ignored

[ivan]

UPD: OK, so setFixedRotation indeed is no longer supported by Box2D. Instead, one should set the moment of inertia to something other than the default 0 (using MOAIBox2DBody:setMassData) to enable the rotation. I think it would be reasonable to mark the setFixedRotation function as deprecated in the API docs as it is quite confusing.
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I am just starting out with Box2D, and I cannot cause a body to rotate.

I am doing something like this:

world = MOAIBox2DWorld.new ()
world:setGravity ( 0, 0 )
world:setUnitsToMeters ( 1/30 )
layer:setBox2DWorld ( world )

dynamicBody = world:addBody ( MOAIBox2DBody.DYNAMIC )
dynamicBody:addRect(-30, -30, 30, 30)
dynamicBody:setFixedRotation(false)
dynamicBody:applyAngularImpulse (200)

Upon further inspection it seems that setFixedRotation is ignored and isFixedRotation always returns true. Why could that happen?

[BladeOfOdin]

i ran into something like this recently. It was because the fixture being added didn't have it's density set not because setFixedRotation doesn't work anymore [it does work].

so something like this

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1.  


2. fixture:setDensity ( 1 )


3.  

and in your case

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2. dynamicBody:addRect(-30, -30, 30, 30)


3.  

would become

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1.  


2. local fixture = dynamicBody:addRect(-30, -30, 30, 30)


3. fixture:setDensity ( 1 )


4.