1 files changed, 13 insertions, 0 deletions
diff --git a/Assets/Scripts/Unit/RootMotion/RootMotionData.cs b/Assets/Scripts/Unit/RootMotion/RootMotionData.cs
index 4fe2db97..84a42ec1 100644
--- a/Assets/Scripts/Unit/RootMotion/RootMotionData.cs
+++ b/Assets/Scripts/Unit/RootMotion/RootMotionData.cs
@@ -26,4 +26,17 @@ public class RootMotionData : ScriptableObject
         return Vector3.Lerp(positionList[prevFrame], positionList[nextFrame], t);
     }
 
+    /// <summary>
+    /// 返回移动量，加到当前position上
+    /// </summary>
+    /// <param name="prevTime">上一次计算root motion的单位时间</param>
+    /// <param name="curTime">本次取root motion的时间</param>
+    /// <returns></returns>
+    public Vector3 GetRootMotionDistance(float prevTime,  float curTime)
+    {
+        Vector3 p1 = GetRootMotion(prevTime);
+        Vector3 p2 = GetRootMotion(curTime);
+        return p2 - p1;
+    }
+
 }