Crown Green Bowling Ball problem when bowling with HTC Vive Controller

Hi,

I have the starts of a Crown Green bowling game and using VIVE with SteamVR and VRTK.

The problem I am coming across is trying to get a smooth departure from the controller to a nice rolling bowl that comes to a nice stop.

I have tried a few different ways, Pure physics simulation, with adding the velocity of the controller to the Rigidbody.

I have tried hundreds of different Physics materials and different masses and Drags.

I have also tried playing with adding my own torque to see if I could get anything like, but still struggling.

The problem I am getting is when I release the ball, which sure enough does push forward with the velocity of the controller, is that as soon as it touches the floor it's like it is hitting a puddle or sticky floor.

If I turn the friction down to compensate it just slides unrealistically.

I have tried, Parenting, Joints, and simply move to position of the VIVE controller.

Anybody come across similar, I have a croquet game which works fine but then I am hitting the ball with a mallet, and if I apply torque forces to the Bowl then it rolls fine.

I will post some links to videos as soon as I have done them.

Code (CSharp):

1. void OnTriggerStay(Collider col)
2.     {
3.         //Logger.Log("You have collided with " + col.name + " and activated OnTriggerStay");
4.         if (device.GetTouch(SteamVR_Controller.ButtonMask.Trigger))
5.         {
6.             //Logger.Log("You have collided with " + col.name + " while holding down touch");
7.             col.attachedRigidbody.isKinematic = true;
8.             col.gameObject.transform.SetParent(this.gameObject.transform);
9.         }
10.  
11.         if(device.GetTouchUp(SteamVR_Controller.ButtonMask.Trigger))
12.         {
13.             //Logger.Log("You have released touch while colliding with " + col.name);
14.             col.gameObject.transform.SetParent(null);
15.             col.attachedRigidbody.isKinematic = false;
16.  
17.             tossObject(col.attachedRigidbody);
18.         }
19.     }
20.  
21.     void tossObject(Rigidbody rigidbody)
22.     {
23.         Transform origin = trackedObj.origin ? trackedObj.origin : trackedObj.transform.parent;
24.         if(origin != null)
25.         {
26.  
27.             Logger.Log("Velocity of the controller = " + device.velocity.magnitude);
28.             Logger.Log("Angular Velocity of the controller = " + device.angularVelocity.magnitude);
29.             //rigidbody.AddTorque(new Vector3(0,0,-1000.0f),ForceMode.Impulse);
30.             rigidbody.velocity = origin.TransformVector(device.velocity);
31.             rigidbody.angularVelocity = origin.TransformVector(device.angularVelocity * 1000);
32.         }
33.         else
34.         {
35.             rigidbody.velocity = device.velocity;
36.             rigidbody.angularVelocity = device.angularVelocity;
37.         }
38.     }

Thanks

Mike

 

Hi,

Video link below.

As you can see, whether close to the floor or throwing it, it seems to come to an abrupt slow down.

I have also tried increasing Mass to large values and also increasing the scale.

Mike

 

I have managed to improve it drastically, but I have had to scale the bowl up to nearly as tall as me.

So I think I will have a look at a custom physics model for the bowl and see what I can do.

Mike

 

All sorted,

I had to use maxAngularVelocity, works a treat.

Mike