/// <summary>
/// Update position and orientation of body and neck
/// </summary>
private bool FrameStarted(FrameEvent evt)
{
if (Pauser.IsPaused)
return true;
// update position
Vector3 derivedInterp = interpNode._getDerivedPosition();
Vector3 derivedDerpy = this.RootNode._getDerivedPosition();
Vector3 displacement = derivedInterp - derivedDerpy;
this.RootNode.Translate(displacement * 6 * evt.timeSinceLastFrame);
// update orientation of derpy
Vector3 lookat_body = this.RootNode.Position - followKart.ActualPosition;
Euler temp_body = bodyFacing.GetRotationTo(lookat_body, true, false, true);
Radian tempTime = new Radian(evt.timeSinceLastFrame * 3f);
temp_body.LimitYaw(tempTime);
bodyFacing = bodyFacing + temp_body;
this.RootNode.Orientation = bodyFacing;
// update orientation of neck
Vector3 lookat_neck = this.RootNode.ConvertWorldToLocalPosition(followKart.ActualPosition);
Euler temp_neck = neckFacing.GetRotationTo(-lookat_neck, true, true, true);
tempTime *= 1.5f;
temp_neck.LimitYaw(tempTime);
temp_neck.LimitPitch(tempTime);
neckFacing = neckFacing + temp_neck;
neckFacing.LimitYaw(NECK_YAW_LIMIT);
neckFacing.LimitPitch(NECK_PITCH_LIMIT);
neckBone.Orientation = neckFacing;
return true;
}
/// <summary>
/// Rotate the neck bone to face the kart. Will eventually need to redo this when we have multiple karts, to face whichever's nearest, etc.
/// </summary>
bool FrameStarted(FrameEvent evt)
{
if (!Pauser.IsPaused) {
Vector3 lookat = RootNode.ConvertWorldToLocalPosition(followKart.ActualPosition);
// temp is how much you need to rotate to get from the current orientation to the new orientation
// we use -lookat because our bone points towards +Z, whereas this code was originally made for things facing towards -Z
Euler temp = neckFacing.GetRotationTo(-lookat, true, true, true);
// limit the offset so the head turns at a maximum of 3 radians per second
Radian tempTime = new Radian(evt.timeSinceLastFrame * 3);
temp.LimitYaw(tempTime);
temp.LimitPitch(tempTime);
neckFacing = neckFacing + temp;
neckFacing.LimitYaw(NECK_YAW_LIMIT);
neckFacing.LimitPitch(NECK_PITCH_LIMIT);
neckbone.Orientation = neckFacing;
}
return true;
}
