本文整理汇总了C#中IVehicle.PredictFuturePosition方法的典型用法代码示例。如果您正苦于以下问题：C# IVehicle.PredictFuturePosition方法的具体用法？C# IVehicle.PredictFuturePosition怎么用？C# IVehicle.PredictFuturePosition使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IVehicle的用法示例。
在下文中一共展示了IVehicle.PredictFuturePosition方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: SteerToAvoid
// xxx couldn't this be made more compact using localizePosition?
/// <summary>
/// Checks for intersection of the given spherical obstacle with a
/// volume of "likely future vehicle positions": a cylinder along the
/// current path, extending minTimeToCollision seconds along the
/// forward axis from current position.
///
/// If they intersect, a collision is imminent and this function returns
/// a steering force pointing laterally away from the obstacle's center.
///
/// Returns a zero vector if the obstacle is outside the cylinder
/// </summary>
/// <param name="v"></param>
/// <param name="minTimeToCollision"></param>
/// <returns></returns>
public Vector3 SteerToAvoid(IVehicle v, float minTimeToCollision)
{
// Capsule x Sphere collision detection
//http://www.altdev.co/2011/04/26/more-collision-detection-for-dummies/
var capStart = v.Position;
var capEnd = v.PredictFuturePosition(minTimeToCollision);
var alongCap = capEnd - capStart;
var capLength = alongCap.Length();
//If the vehicle is going very slowly then simply test vehicle sphere against obstacle sphere
if (capLength <= 0.05)
{
var distance = Vector3.Distance(Center, v.Position);
if (distance < Radius + v.Radius)
return (v.Position - Center);
return Vector3.Zero;
}
var capAxis = alongCap / capLength;
//Project vector onto capsule axis
var b = Utilities.Clamp(Vector3.Dot(Center - capStart, capAxis), 0, capLength);
//Get point on axis (closest point to sphere center)
var r = capStart + capAxis * b;
//Get distance from circle center to closest point
var dist = Vector3.Distance(Center, r);
//Basic sphere sphere collision about the closest point
var inCircle = dist < Radius + v.Radius;
if (!inCircle)
return Vector3.Zero;
//avoidance vector calculation
Vector3 avoidance = Vector3Helpers.PerpendicularComponent(v.Position - Center, v.Forward);
//if no avoidance was calculated this is because the vehicle is moving exactly forward towards the sphere, add in some random sideways deflection
if (avoidance == Vector3.Zero)
avoidance = -v.Forward + v.Side * 0.01f * RandomHelpers.Random();
avoidance = Vector3.Normalize(avoidance);
avoidance *= v.MaxForce;
avoidance += v.Forward * v.MaxForce * 0.75f;
return avoidance;
}