change fomula easily that calculate path point in Screen.

Assets/Scripts/UIManager.cs

@@ -161,22 +161,6 @@ public class UIManager : MonoBehaviour
         return point - canvasSize * 0.5f + middlePoint;
     }
 
-    private Vector3 getDestVector(Vector3 ScreenVector, Vector3 RealVector)
-    {
-        ScreenVector.z = 0;
-        RealVector = getXYVectorfromXZVector(RealVector);
-        var v = square.GetDestPoint(prevSelectPathNum) - RealVector;
-        var k = ScreenVector.magnitude / RealVector.magnitude;
-
-        return k * v;
-    }
-
-    private Vector3 getVectorFromAtoB(Vector3 a, Vector3 b)
-    {
-        var ret = b - a;
-        return ret;
-    }
-
     public Vector3 getXYVectorfromXZVector(Vector3 v)
     {
         return new Vector3(v.x, v.z, 0.0f);
@@ -189,6 +173,16 @@ public class UIManager : MonoBehaviour
         velocityslider.UpdateValuebyVelocity(square.GetPathVelocity(pathNum));
     }
 
+    private Vector3 getInnerProduct(Vector3 a, Vector3 b)
+    {
+        return new Vector3(a.x * b.x, a.y * b.y, a.z * b.z);
+    }
+
+    private Vector3 getRatio(Vector3 a, Vector3 b)
+    {
+        return new Vector3(a.x / b.x, a.y / b.y, 1.0f);
+    }
+
     private void TryFIndPath()
     {
         RaycastHit hit1;
@@ -211,11 +205,20 @@ public class UIManager : MonoBehaviour
                         updatePathInfo(pathNum);
 
                         var mouseClickPosition = getMouseClickPosition(hit1);
-                        var v = getDestVector(getVectorFromAtoB(middlePoint, mouseClickPosition), getVectorFromAtoB(player.transform.position, hit2.point));
+                        var tmp = mouseClickPosition - middlePoint;
+                        var tmp2 = getXYVectorfromXZVector(hit2.point);
+                        var v = square.pathList[pathNum + 1];
+                        var k = getRatio(tmp, tmp2);
 
-                        _pathUI.transform.position = mouseClickPosition + v;
+                        _pathUI.transform.position = getInnerProduct(v, k) + middlePoint;
                         _pathUI.SetActive(true);
                     }
+                    else
+                    {
+                        _pathUI.SetActive(false);
+                        prevSelectPathNum = -1;
+                        sliderflag = 0;
+                    }
                 }
                 else
                 {