God Mode: Physics

[azaleacolburn]

Description

Created a function to create and attach a "ghostBody" to some other body using a SwingTwist (Ball and Socket) constraint. The ghostBody's purpose is to control the original body, changing the position of the ghostBody will "swing" the original body along with it. The intention of this function is to be called when a user in "god mode" clicks on an object.

Objectives

• Create a ghostBody function
• Add a button to the main HUD labeled "Test God Mode," to test this ghostBody function on an arbitrary robot (at the moment, the first robot in the sceneObjects list). When clicked, the button creates and then attaches a ghost body to the robot, then repositions the it in order to move the robot.

Testing Done

• Very basic unit testing to ensure the ghostBody and constraint are actually created
• Used the aforementioned testing button to check behavior.

JIRA Issue

[HunterBarclay]

It seems like the joint is creating some odd behavior, especially as the joints kind of fail to get into compliance with any urgency. See specifics below

[HunterBarclay]

Suggestions for adding controllable anchor point along with ghost body

[HunterBarclay]

@Ewie21 Could you make sure you specify the mPoint1 and mPoint2 of the point constraint to be the anchor point. When driving the robot off the platform and testing the godmode, the anchor point is still defaulted to the origin of the world since the points are not set.

[HunterBarclay]

@Ewie21 It looks like one of the unit tests is failing; however, if I run it separately, it works. I think we may be hitting the memory limit. I'm going to try and see if I can find some more information

[a-crowell]

So cool!

From Autodesk/synthesis : colbura/1675 now? It looks a commit ahead.

@HunterBarclay what are you looking for? Ghost body in the same place as the robot's initial position and worrying about gravity later?

[HunterBarclay]

@a-crowell We'll worry about it later. My raycasting code will supply the initial contact point and the ghost body will act as the maneuver node for moving the connected assembly around.

[HunterBarclay]

Great work! We can ignore the issues with unit testing for now. They are being addressed in #996

[HunterBarclay]

@Ewie21 Could you fix the merge conflict and update your fork branch to the Autodesk/synthesis branch?

[a-crowell]

Only a quick double check after the merge then. Awesome job!