/// <summary>
/// 将trigger位置摆到body位置前面
/// </summary>
/// <param name="body"></param>
/// <param name="trigger"></param>
/// <param name="distance"></param>
/// <param name="dectectionLayer"></param>
public static void Detection(this Body body, Body trigger, double distance, DectectionLayer dectectionLayer = DectectionLayer.All)
{
if (trigger == null)
{
return;
}
trigger.Position.Set(body.Position);
trigger.InitAngle(body.Angle);
trigger.Velocity = body.Velocity + body.Forward * 10;
trigger.AngularVelocity = 0;
}
/// <summary>
/// 触发检测
/// </summary>
/// <param name="body"></param>
/// <param name="trigger"></param>
/// <param name="distance"></param>
public static void TriggerDetection(this Body body, Body trigger, double distance, DectectionLayer dectectionLayer = DectectionLayer.All)
{
if (!trigger.Trigger)
{
return;
}
trigger.Position = body.Position + body.Forward * distance;
trigger.InitAngle(body.Angle);
}
/// <summary>
/// 环形检测
/// </summary>
/// <param name="body"></param>
/// <param name="bodies">被检测的物体组</param>
/// <param name="radius">检测的半径</param>
/// <param name="layer">检测的层</param>
/// <returns>检测到的物体,按照距离进行排序</returns>
public static List <Body> RingDetection(this Body body, IEnumerable <Body> bodies, double radius, DectectionLayer layer = DectectionLayer.All)
{
List <tempBody> CollisionalBodies = new List <tempBody>();
foreach (var b in bodies)
{
var distanceNoSqrt = Helper.DistanceNoSqrt(body.Position, b.Position);
if (distanceNoSqrt < radius * radius)
{
CollisionalBodies.Add(new tempBody(b, Math.Sqrt(distanceNoSqrt)));
}
}
return((from o in CollisionalBodies.OrderBy(o => o.Distance) select o.Body).ToList());
}