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POHow to extract/create a JointDef based off a b2Joint instantiation
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Id
6950587
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AcceptedAnswerId
6950848
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1
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0
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CreationDate
2011-08-05T01:51:23.270
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0
LastActivityDate
2011-08-05T02:43:15.933
LastEditDate
2011-08-05T02:15:30.667
LastEditorUserId
700195
OwnerUserId
700195
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0
PostTypeId
1
Score
0
ViewCount
252
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text
Body
I'm trying to serialize a b2World, and due to Box2D's many private objects that are used, made, and deleted internally, the issue becomes much more complicated. I decided that i should use these internal objects get() functions to get the data i need, and create a "b2Definition" object based off it at save time, and use the definition with the global factories "create" methods to recreate the objects. I have encountered a few problems i need help on however: In the following code is all the JointDef data i need, but can't figure out how to get from the pointer to the correct type of object. I also am wondering if i should even attempt to save contact data.... Is it automatically made in the factory create metods? <pre><code> b2WeldJointDef JointDef; //QUESTION: how do i get this //JointDef.referenceAngle= Joint-> ????? b2GearJointDef JointDef; //QUESTION: how do i get these //JointDef.joint1= Joint-> ?????? //JointDef.joint2= Joint-> ?????? b2LineJointDef JointDef; //QUESTION: how do i get these?? //JointDef.localAxisA= Joint-> ???? //JointDef.lowerTranslation= Joint-> ???? //JointDef.upperTranslation= Joint-> ???? b2MouseJointDef JointDef; //No problems b2PrismaticJointDef JointDef; //QUESTION: how do i get these?? //JointDef.referenceAngle= Joint-> ???? //JointDef.localAxis1= Joint-> ???? //JointDef.lowerTranslation= Joint-> ???? //JointDef.upperTranslation= Joint-> ???? //JointDef.maxMotorForce= Joint-> ???? b2PulleyJointDef JointDef; //QUESTION: how do i get these? //JointDef.maxLengthA= Joint-> ???? //JointDef.maxLengthB= Joint-> ???? b2RevoluteJointDef JointDef; //QUESTION: how do i get these? //JointDef.maxMotorTorque= Joint-> ???? //JointDef.referenceAngle Joint-> ???? //JointDef.lowerAngle= Joint-> ???? //JointDef.upperAngle= Joint-> ???? b2JointDef JointDef; //JointDef.collideConnected= ???? </code></pre> Do i need the data above? Is there a way to get it?
Tags
<c++><serialization><box2d>
Title
How to extract/create a JointDef based off a b2Joint instantiation
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