Vehcile + CompoundBody
Posted: Thu Jun 09, 2011 9:57 am
Hi, It's me again 
This time I have a little problem with the vehicle class. I think I know the solution but I couldn't find a way to implement it. What I have for example is the following:
- all wheels have radius 1
- the body has width and length of 1 unit and a height of 0.5
I create the vehilce using the following code. With the values from above this works quiet well (see image).
So no my problem is when I need the collisionshape of the body to be higher, lets say I need a hight of 1 unit. If I increase the height value from 0.5 to 1, the body will "grow" 0.25 upward and 0.25 downward. As the radius of the wheel is 1 the body will touch the ground so that the vehicle can't move anymore. So I need a way to transform the whole body. I tried to set the position of the CompoundShapeEntry which seems to have an influence, but not as I wanted. I also tried to adjust body.CollisionInformation.LocalPosition, but I seems this has only influence on the WorldTransformation (my shape gets rendered with another transformation, but physicaly there as nothing changed). I've also looked at the demo and saw that you adjusted the same properties, but it seems not to work for me.
Please have a look at the attached image, this should make clear what I'm looking for...
Hope you know what I mean and thanks for your great support
This time I have a little problem with the vehicle class. I think I know the solution but I couldn't find a way to implement it. What I have for example is the following:
- all wheels have radius 1
- the body has width and length of 1 unit and a height of 0.5
I create the vehilce using the following code. With the values from above this works quiet well (see image).
Code: Select all
var bodies = new List<CompoundShapeEntry>
{
new CompoundShapeEntry(new BoxShape(2, 0.5f, 10), new Vector3(0, 0, 0)),
};
var body = new CompoundBody(bodies, 61);
body.Position = new Vector3(0, 5, 0);
_vehicle = new Vehicle(body);
float wheelOffsetX = 1.5f;
float wheelOffsetY = 0;
float wheelOffsetZ = 5;
float wheelRadius = 1;
_vehicle.AddWheel(new Wheel(
new RaycastWheelShape(wheelRadius, Matrix.Identity),
new WheelSuspension(2000, 100f, Vector3.Down, .5f, new Vector3(-wheelOffsetX, wheelOffsetY, wheelOffsetZ)),
new WheelDrivingMotor(2.5f, 30000, 10000),
new WheelBrake(1.5f, 2, .02f),
new WheelSlidingFriction(4, 5)));
_vehicle.AddWheel(new Wheel(
new RaycastWheelShape(wheelRadius, Matrix.Identity),
new WheelSuspension(2000, 100f, Vector3.Down, .5f, new Vector3(-wheelOffsetX, wheelOffsetY, -wheelOffsetZ)),
new WheelDrivingMotor(2.5f, 30000, 10000),
new WheelBrake(1.5f, 2, .02f),
new WheelSlidingFriction(4, 5)));
_vehicle.AddWheel(new Wheel(
new RaycastWheelShape(wheelRadius, Matrix.Identity),
new WheelSuspension(2000, 100f, Vector3.Down, .5f, new Vector3(wheelOffsetX, wheelOffsetY, wheelOffsetZ)),
new WheelDrivingMotor(2.5f, 30000, 10000),
new WheelBrake(1.5f, 2, .02f),
new WheelSlidingFriction(4, 5)));
_vehicle.AddWheel(new Wheel(
new RaycastWheelShape(wheelRadius, Matrix.Identity),
new WheelSuspension(2000, 100f, Vector3.Down, .5f, new Vector3(wheelOffsetX, wheelOffsetY, -wheelOffsetZ)),
new WheelDrivingMotor(2.5f, 30000, 10000),
new WheelBrake(1.5f, 2, .02f),
new WheelSlidingFriction(4, 5)));
Please have a look at the attached image, this should make clear what I'm looking for...
Hope you know what I mean and thanks for your great support
