Move/rotate method isnt working with physicsNode

Troubleshooting General Help
1

I updated to the latest revision a few minutes back, any my code suddenly broke.



the issues are the following.


  1. I cannt use this code any more,

    [java]CompoundCollisionShape cs_basicPlatform = CollisionShapeFactory.createMeshCompoundShape(geo_basicPlatform);[/java] (this code is still in the doc)

    Instead I have to use,

    [java]CollisionShape cs_basicPlatform = CollisionShapeFactory.createMeshShape(geo_basicPlatform);[/java]

    are they same?


  2. I cant move the physics node with move/rotate method any more. But, I was using ‘setKinematic(true) and then move/rotate methods’ to ‘relocate and move’ those platforms(PhysicsNode).

    Now If i have to re position a physics node, and use forces to move it every time, is this even an easy way to think?

    Like, an uniformly infinitely rotating platform on its axis, on which a player will walk. :?
2

In the screen shot, I attached a boxCollision shape at the size of the upper portion of the rotatin platform(where it player can walk), then i rotated the PhysicsNode using rotate method, and it worked find.(I had to setKinematic to true)…this was before updating jMP



Hosted by imgur.com802×599




After update, everything is broke. I cannt move the platfrom using rotate method.I tried different ways, but all ended up in failure. Its just so frustrating. I cannt use force cause, the object is kinetic and i cannt set it to false, cause the lower portion of the platform is dipped in the ground.



in the pic i am using

CollisionShape cs_basicRotating = CollisionShapeFactory.createDynamicMeshShape(geo_basicRotating);

pn_basicRotating.setKinematic(true);



the piller is dipped at the bottom, which is a MeshShape.

CollisionShape cs_ground= CollisionShapeFactory.createMeshShape(geo_ground);



All, i want is to, put again a box collision shape at the top, where the player can walk, and the platform will rotate uniformly on its axis.

3

Yeah, the constant geometry to physics updates in updateGeometricState were causing lots of problems so they are no longer available. Physics objects are no longer a Node but a Control, the PhysicsNode is just a Node with a PhysicsRigidBodyControl now. You can extend PhysicsRigidBodyControl and apply the geometry location each frame or something or simply use setPhysicsLocation of the PhysicsNode or RigidBodyControl.

4

for translation i solved the issue, using the following code:

[java]pn_basicLeftRight2.move(0, 0, -12.5f *tpf); //though, dubugShape shows the PhysicsNode is not moving,but the Geo is moving

pn_basicLeftRight2.setPhysicsLocation(pn_basicLeftRight2.getLocalTranslation());[/java]



for rotatinon i did,

[java] pn_basicRotating.rotate(0,0.15f * tpf, 0);

pn_basicRotating.setPhysicsRotation(pn_basicRotating.getLocalRotation().toRotationMatrix());[/java]



Is this the way it should be?

5

Well, you dont need to do it twice, just use the setPhysicsLocation/Rotation, it will be applied to the objects.

6

How do i ‘rotate’ an object at the same line, when it(in the parameter) is actually asking for ‘the rotation’?

7

Look at the move or rotate methods. (right-click->navigate to source)

8

i was saying

physicsNode1.setPhysicsRotation( physicsNode1.rotate(rotation_Value).getCurrentRotationValueOfPhysicsNode1 )



here, i am rotating and measuring the rotation at the same time…it looks weird!!



what exactly am i missing? :frowning:

9

Well, do it like you did before, I guess its the easiest way right now because Spatial has the methods you need. Generally you would do

physicsNode.setPhysicsRotation(physicsNode.getPhysicsRotation().multLocal(addQuaternion));