daily update on 20230415 by nitload youmu

源代码/StgSharp/Geometries/Line.cs

@@ -1,5 +1,6 @@
 using Steamworks;
 using StgSharp;
+using StgSharp.Control;
 using StgSharp.Math;
 using System;
 using System.Collections.Generic;
@@ -9,11 +10,11 @@ namespace StgSharp.Geometries
 {
     public class Line:IGeometry
     {
-        internal Point _basePoint;
-        internal Point _beginPoint;
-        internal Point _endPoint;
-        internal GetLocationHandler _beginPointMov;
-        internal GetLocationHandler _endPointMov;
+        internal Point _basePoint = default ;
+        internal Point _beginPoint = default ;
+        internal Point _endPoint = default;
+        internal GetLocationHandler movBegin;
+        internal GetLocationHandler movEnd;
         internal RenderMode _renderMode;
         internal readonly uint bornTick;
 
@@ -35,6 +36,14 @@ namespace StgSharp.Geometries
             bornTick = tickCounter._value;
         }
 
+        public Line(Point begin, Point end)
+        {
+            this._beginPoint = begin;
+            this._endPoint = end;
+        }
+
+        public Line() { }
+
         public override float SetArrayX()
         {
             throw new NotImplementedException();
@@ -60,9 +69,13 @@ namespace StgSharp.Geometries
             throw new ArgumentException("Lines do not need the third parameter to define!");
         }
 
-        public virtual vec3d MoveBeginPoint(uint tick) => default;
+        //计算线起点的方法，通过对线的派生的重写实现功能
+        public virtual vec3d MoveBeginPoint(uint tick) 
+            => movBegin.Invoke( GameTimeLine.tickCounter);
 
-        public virtual vec3d MoveEndPoint(uint tick) => default;
+        //计算线重点的方法，通过对线的派生的重写实现功能
+        public virtual vec3d MoveEndPoint(uint tick) 
+            => movEnd.Invoke( GameTimeLine.tickCounter);
 
         internal override void OnRender(uint tick)
         {